Neurology Reviews

When OpenAI released ChatGPT-3 publicly last November, some doctors decided to try out the free AI tool that learns language and writes human-like text. Some physicians found the chatbot made mistakes and stopped using it, while others were happy with the results and plan to use it more often.

“We’ve played around with it. It was very early on in AI and we noticed it gave us incorrect information with regards to clinical guidance,” said Monalisa Tailor, MD, an internal medicine physician at Norton Health Care in Louisville, Ky. “We decided not to pursue it further,” she said.

Orthopedic spine surgeon Daniel Choi, MD, who owns a small medical/surgical practice in Long Island, New York, tested the chatbot’s performance with a few administrative tasks, including writing a job listing for an administrator and prior authorization letters.

He was enthusiastic. “A well-polished job posting that would usually take me 2-3 hours to write was done in 5 minutes,” Dr. Choi said. “I was blown away by the writing – it was much better than anything I could write.”

The chatbot can also automate administrative tasks in doctors’ practices from appointment scheduling and billing to clinical documentation, saving doctors time and money, experts say.

Most physicians are proceeding cautiously. About 10% of more than 500 medical group leaders, responding to a March poll by the Medical Group Management Association, said their practices regularly use AI tools.

More than half of the respondents not using AI said they first want more evidence that the technology works as intended.

“None of them work as advertised,” said one respondent.

MGMA practice management consultant Dawn Plested acknowledges that many of the physician practices she’s worked with are still wary. “I have yet to encounter a practice that is using any AI tool, even something as low-risk as appointment scheduling,” she said.

Physician groups may be concerned about the costs and logistics of integrating ChatGPT with their electronic health record systems (EHRs) and how that would work, said Ms. Plested.

Doctors may also be skeptical of AI based on their experience with EHRs, she said.

“They were promoted as a panacea to many problems; they were supposed to automate business practice, reduce staff and clinician’s work, and improve billing/coding/documentation. Unfortunately, they have become a major source of frustration for doctors,” said Ms. Plested.
 

Drawing the line at patient care

Patients are worried about their doctors relying on AI for their care, according to a Pew Research Center poll released in February. About 60% of U.S. adults say they would feel uncomfortable if their own health care professional relied on artificial intelligence to do things like diagnose disease and recommend treatments; about 40% say they would feel comfortable with this.

“We have not yet gone into using ChatGPT for clinical purposes and will be very cautious with these types of applications due to concerns about inaccuracies,” Dr. Choi said.

Practice leaders reported in the MGMA poll that the most common uses of AI were nonclinical, such as:

• Patient communications, including call center answering service to help triage calls, to sort/distribute incoming fax messages, and outreach such as appointment reminders and marketing materials.
• Capturing clinical documentation, often with natural language processing or speech recognition platforms to help virtually scribe.
• Improving billing operations and predictive analytics.

Some doctors told The New York Times that ChatGPT helped them communicate with patients in a more compassionate way.

They used chatbots “to find words to break bad news and express concerns about a patient’s suffering, or to just more clearly explain medical recommendations,” the story noted.
 

Is regulation needed?

Some legal scholars and medical groups say that AI should be regulated to protect patients and doctors from risks, including medical errors, that could harm patients.

“It’s very important to evaluate the accuracy, safety, and privacy of language learning models (LLMs) before integrating them into the medical system. The same should be true of any new medical tool,” said Mason Marks, MD, JD, a health law professor at the Florida State University College of Law in Tallahassee.

In mid-June, the American Medical Association approved two resolutions calling for greater government oversight of AI. The AMA will develop proposed state and federal regulations and work with the federal government and other organizations to protect patients from false or misleading AI-generated medical advice.

Dr. Marks pointed to existing federal rules that apply to AI. “The Federal Trade Commission already has regulation that can potentially be used to combat unfair or deceptive trade practices associated with chatbots,” he said.

In addition, “the U.S. Food and Drug Administration can also regulate these tools, but it needs to update how it approaches risk when it comes to AI. The FDA has an outdated view of risk as physical harm, for instance, from traditional medical devices. That view of risk needs to be updated and expanded to encompass the unique harms of AI,” Dr. Marks said.

There should also be more transparency about how LLM software is used in medicine, he said. “That could be a norm implemented by the LLM developers and it could also be enforced by federal agencies. For instance, the FDA could require developers to be more transparent regarding training data and methods, and the FTC could require greater transparency regarding how consumer data might be used and opportunities to opt out of certain uses,” said Dr. Marks.
 

What should doctors do?

Dr. Marks advised doctors to be cautious when using ChatGPT and other LLMs, especially for medical advice. “The same would apply to any new medical tool, but we know that the current generation of LLMs [is] particularly prone to making things up, which could lead to medical errors if relied on in clinical settings,” he said.

There is also potential for breaches of patient confidentiality if doctors input clinical information. ChatGPT and OpenAI-enabled tools may not be compliant with the Health Insurance Portability and Accountability Act, which set national standards to protect individuals’ medical records and individually identifiable health information.

“The best approach is to use chatbots cautiously and with skepticism. Don’t input patient information, confirm the accuracy of information produced, and don’t use them as replacements for professional judgment,” Dr. Marks recommended.

Ms. Plested suggested that doctors who want to experiment with AI start with a low-risk tool such as appointment reminders that could save staff time and money. “I never recommend they start with something as high-stakes as coding/billing,” she said.
 

A version of this article appeared on Medscape.com.

When OpenAI released ChatGPT-3 publicly last November, some doctors decided to try out the free AI tool that learns language and writes human-like text. Some physicians found the chatbot made mistakes and stopped using it, while others were happy with the results and plan to use it more often.

“We’ve played around with it. It was very early on in AI and we noticed it gave us incorrect information with regards to clinical guidance,” said Monalisa Tailor, MD, an internal medicine physician at Norton Health Care in Louisville, Ky. “We decided not to pursue it further,” she said.

Orthopedic spine surgeon Daniel Choi, MD, who owns a small medical/surgical practice in Long Island, New York, tested the chatbot’s performance with a few administrative tasks, including writing a job listing for an administrator and prior authorization letters.

He was enthusiastic. “A well-polished job posting that would usually take me 2-3 hours to write was done in 5 minutes,” Dr. Choi said. “I was blown away by the writing – it was much better than anything I could write.”

The chatbot can also automate administrative tasks in doctors’ practices from appointment scheduling and billing to clinical documentation, saving doctors time and money, experts say.

Most physicians are proceeding cautiously. About 10% of more than 500 medical group leaders, responding to a March poll by the Medical Group Management Association, said their practices regularly use AI tools.

More than half of the respondents not using AI said they first want more evidence that the technology works as intended.

“None of them work as advertised,” said one respondent.

MGMA practice management consultant Dawn Plested acknowledges that many of the physician practices she’s worked with are still wary. “I have yet to encounter a practice that is using any AI tool, even something as low-risk as appointment scheduling,” she said.

Physician groups may be concerned about the costs and logistics of integrating ChatGPT with their electronic health record systems (EHRs) and how that would work, said Ms. Plested.

Doctors may also be skeptical of AI based on their experience with EHRs, she said.

“They were promoted as a panacea to many problems; they were supposed to automate business practice, reduce staff and clinician’s work, and improve billing/coding/documentation. Unfortunately, they have become a major source of frustration for doctors,” said Ms. Plested.
 

Drawing the line at patient care

Patients are worried about their doctors relying on AI for their care, according to a Pew Research Center poll released in February. About 60% of U.S. adults say they would feel uncomfortable if their own health care professional relied on artificial intelligence to do things like diagnose disease and recommend treatments; about 40% say they would feel comfortable with this.

“We have not yet gone into using ChatGPT for clinical purposes and will be very cautious with these types of applications due to concerns about inaccuracies,” Dr. Choi said.

Practice leaders reported in the MGMA poll that the most common uses of AI were nonclinical, such as:

• Patient communications, including call center answering service to help triage calls, to sort/distribute incoming fax messages, and outreach such as appointment reminders and marketing materials.
• Capturing clinical documentation, often with natural language processing or speech recognition platforms to help virtually scribe.
• Improving billing operations and predictive analytics.

Some doctors told The New York Times that ChatGPT helped them communicate with patients in a more compassionate way.

They used chatbots “to find words to break bad news and express concerns about a patient’s suffering, or to just more clearly explain medical recommendations,” the story noted.
 

Is regulation needed?

Some legal scholars and medical groups say that AI should be regulated to protect patients and doctors from risks, including medical errors, that could harm patients.

“It’s very important to evaluate the accuracy, safety, and privacy of language learning models (LLMs) before integrating them into the medical system. The same should be true of any new medical tool,” said Mason Marks, MD, JD, a health law professor at the Florida State University College of Law in Tallahassee.

In mid-June, the American Medical Association approved two resolutions calling for greater government oversight of AI. The AMA will develop proposed state and federal regulations and work with the federal government and other organizations to protect patients from false or misleading AI-generated medical advice.

Dr. Marks pointed to existing federal rules that apply to AI. “The Federal Trade Commission already has regulation that can potentially be used to combat unfair or deceptive trade practices associated with chatbots,” he said.

In addition, “the U.S. Food and Drug Administration can also regulate these tools, but it needs to update how it approaches risk when it comes to AI. The FDA has an outdated view of risk as physical harm, for instance, from traditional medical devices. That view of risk needs to be updated and expanded to encompass the unique harms of AI,” Dr. Marks said.

There should also be more transparency about how LLM software is used in medicine, he said. “That could be a norm implemented by the LLM developers and it could also be enforced by federal agencies. For instance, the FDA could require developers to be more transparent regarding training data and methods, and the FTC could require greater transparency regarding how consumer data might be used and opportunities to opt out of certain uses,” said Dr. Marks.
 

What should doctors do?

Dr. Marks advised doctors to be cautious when using ChatGPT and other LLMs, especially for medical advice. “The same would apply to any new medical tool, but we know that the current generation of LLMs [is] particularly prone to making things up, which could lead to medical errors if relied on in clinical settings,” he said.

There is also potential for breaches of patient confidentiality if doctors input clinical information. ChatGPT and OpenAI-enabled tools may not be compliant with the Health Insurance Portability and Accountability Act, which set national standards to protect individuals’ medical records and individually identifiable health information.

“The best approach is to use chatbots cautiously and with skepticism. Don’t input patient information, confirm the accuracy of information produced, and don’t use them as replacements for professional judgment,” Dr. Marks recommended.

Ms. Plested suggested that doctors who want to experiment with AI start with a low-risk tool such as appointment reminders that could save staff time and money. “I never recommend they start with something as high-stakes as coding/billing,” she said.
 

A version of this article appeared on Medscape.com.

When OpenAI released ChatGPT-3 publicly last November, some doctors decided to try out the free AI tool that learns language and writes human-like text. Some physicians found the chatbot made mistakes and stopped using it, while others were happy with the results and plan to use it more often.

“We’ve played around with it. It was very early on in AI and we noticed it gave us incorrect information with regards to clinical guidance,” said Monalisa Tailor, MD, an internal medicine physician at Norton Health Care in Louisville, Ky. “We decided not to pursue it further,” she said.

Orthopedic spine surgeon Daniel Choi, MD, who owns a small medical/surgical practice in Long Island, New York, tested the chatbot’s performance with a few administrative tasks, including writing a job listing for an administrator and prior authorization letters.

He was enthusiastic. “A well-polished job posting that would usually take me 2-3 hours to write was done in 5 minutes,” Dr. Choi said. “I was blown away by the writing – it was much better than anything I could write.”

The chatbot can also automate administrative tasks in doctors’ practices from appointment scheduling and billing to clinical documentation, saving doctors time and money, experts say.

Most physicians are proceeding cautiously. About 10% of more than 500 medical group leaders, responding to a March poll by the Medical Group Management Association, said their practices regularly use AI tools.

More than half of the respondents not using AI said they first want more evidence that the technology works as intended.

“None of them work as advertised,” said one respondent.

MGMA practice management consultant Dawn Plested acknowledges that many of the physician practices she’s worked with are still wary. “I have yet to encounter a practice that is using any AI tool, even something as low-risk as appointment scheduling,” she said.

Physician groups may be concerned about the costs and logistics of integrating ChatGPT with their electronic health record systems (EHRs) and how that would work, said Ms. Plested.

Doctors may also be skeptical of AI based on their experience with EHRs, she said.

“They were promoted as a panacea to many problems; they were supposed to automate business practice, reduce staff and clinician’s work, and improve billing/coding/documentation. Unfortunately, they have become a major source of frustration for doctors,” said Ms. Plested.
 

Drawing the line at patient care

Patients are worried about their doctors relying on AI for their care, according to a Pew Research Center poll released in February. About 60% of U.S. adults say they would feel uncomfortable if their own health care professional relied on artificial intelligence to do things like diagnose disease and recommend treatments; about 40% say they would feel comfortable with this.

“We have not yet gone into using ChatGPT for clinical purposes and will be very cautious with these types of applications due to concerns about inaccuracies,” Dr. Choi said.

Practice leaders reported in the MGMA poll that the most common uses of AI were nonclinical, such as:

• Patient communications, including call center answering service to help triage calls, to sort/distribute incoming fax messages, and outreach such as appointment reminders and marketing materials.
• Capturing clinical documentation, often with natural language processing or speech recognition platforms to help virtually scribe.
• Improving billing operations and predictive analytics.

Some doctors told The New York Times that ChatGPT helped them communicate with patients in a more compassionate way.

They used chatbots “to find words to break bad news and express concerns about a patient’s suffering, or to just more clearly explain medical recommendations,” the story noted.
 

Is regulation needed?

Some legal scholars and medical groups say that AI should be regulated to protect patients and doctors from risks, including medical errors, that could harm patients.

“It’s very important to evaluate the accuracy, safety, and privacy of language learning models (LLMs) before integrating them into the medical system. The same should be true of any new medical tool,” said Mason Marks, MD, JD, a health law professor at the Florida State University College of Law in Tallahassee.

In mid-June, the American Medical Association approved two resolutions calling for greater government oversight of AI. The AMA will develop proposed state and federal regulations and work with the federal government and other organizations to protect patients from false or misleading AI-generated medical advice.

Dr. Marks pointed to existing federal rules that apply to AI. “The Federal Trade Commission already has regulation that can potentially be used to combat unfair or deceptive trade practices associated with chatbots,” he said.

In addition, “the U.S. Food and Drug Administration can also regulate these tools, but it needs to update how it approaches risk when it comes to AI. The FDA has an outdated view of risk as physical harm, for instance, from traditional medical devices. That view of risk needs to be updated and expanded to encompass the unique harms of AI,” Dr. Marks said.

There should also be more transparency about how LLM software is used in medicine, he said. “That could be a norm implemented by the LLM developers and it could also be enforced by federal agencies. For instance, the FDA could require developers to be more transparent regarding training data and methods, and the FTC could require greater transparency regarding how consumer data might be used and opportunities to opt out of certain uses,” said Dr. Marks.
 

What should doctors do?

Dr. Marks advised doctors to be cautious when using ChatGPT and other LLMs, especially for medical advice. “The same would apply to any new medical tool, but we know that the current generation of LLMs [is] particularly prone to making things up, which could lead to medical errors if relied on in clinical settings,” he said.

There is also potential for breaches of patient confidentiality if doctors input clinical information. ChatGPT and OpenAI-enabled tools may not be compliant with the Health Insurance Portability and Accountability Act, which set national standards to protect individuals’ medical records and individually identifiable health information.

“The best approach is to use chatbots cautiously and with skepticism. Don’t input patient information, confirm the accuracy of information produced, and don’t use them as replacements for professional judgment,” Dr. Marks recommended.

Ms. Plested suggested that doctors who want to experiment with AI start with a low-risk tool such as appointment reminders that could save staff time and money. “I never recommend they start with something as high-stakes as coding/billing,” she said.
 

A version of this article appeared on Medscape.com.

After her emergency medicine group was acquired by a staffing firm backed by a large private equity (PE) firm, Michelle Wiener, MD, said the workflow changes came swiftly.

“Our staffing has been greatly reduced,” the Detroit physician said. “At this point, we have no say in anything. We have no say in the scheduling. We aren’t allowed to see what is billed under our name. The morale has really gone down.”

Dr. Wiener, who practices at Ascension St. John Hospital, said she and fellow physicians have repeatedly brought their concerns to TeamHealth, which in 2015 took over St. John Emergency Services PC. TeamHealth is owned by PE giant Blackstone.

“It’s very frustrating,” Dr. Wiener said. “We’re taking it from all sides.”

Blackstone and Ascension St. John did not respond to this news organization’s request for comment.

TeamHealth would not respond directly to questions about the Ascension St. John Hospital physicians or their concerns.

Spokesman Josh Hopson provided only a general statement: “TeamHealth is committed to making sure that clinicians have the resources and support needed to provide first-class care to patients, particularly with regard to staffing and compensation. TeamHealth has and will always put patient care first, and that is not impacted by its ownership model.”

Acquisitions of medical practices and hospitals by PE firms are rapidly growing, with more than 1,400 PE deals in health care in 2021 totaling upwards of $208 billion, according to PitchBook Data Inc., a Seattle-based firm that tracks mergers and acquisitions.

Some physicians praise the partnerships as an opportunity to improve technology and efficiency, whereas others decry them as raising patient costs and lowering the quality of care. A recent UC Berkeley study found that PE ownership of medical practices was linked to consumer price increases for 8 of 10 specialties, most notably oncology and gastroenterology.
 

What should you expect after PE acquisition?

Since his practice partnered with a PE firm in 2020, Milwaukee-based otolaryngologist Madan Kandula, MD, said he has found the changes positive. The practice has grown and improved operations in finance, accounting, compliance, and information technology, said Dr. Kandula, founder and CEO of Advent, an ENT practice with 15 clinics in four Midwestern states.

Dr. Kandula said his group already had a sound business practice, and that the goal of partnering with a PE firm wasn’t to change day-to-day operations but to propel the organization forward.

“From patient load to visit time to how we staff our clinics, there has been no change,” he said. “My private equity firm does not, [and] cannot, impose their will on our clinical decisions.”

Experts say the impact of PE acquisitions on individual physicians often depends on where a doctor ranks in the organization, what stage they are in their career, and how much control they had over the deal.

“It’s the older physicians who are usually selling the practice and getting the big payout,” said Anjali Dooley, a St. Louis–based health law attorney who counsels physicians about PE deals. “The younger doctors are usually not part of the deal, as they may still be employees. They don’t have any negotiating power. Hopefully, there is some transparency, but sometimes there is not, and they are blindsided by the deal.”

When it comes to workload, most PE-owned groups are put on a production-based model, such as a wRVU-based model, said Roger Strode, a Chicago-based health law attorney who focuses on health care mergers and acquisitions. Most already operate under such a model, but there might be some changes after a buyout.

Staffing may also change, added Ms. Dooley. The PE firms may want to add partners or companies already in their portfolios to create efficiencies, causing training or workflow changes.

In a hospital buyout, changes may depend on whether a department is a significant revenue generator for the hospital, Ms. Dooley noted.

PE firms frequently favor higher revenue–generating specialties, such as neurosurgery, cardiology, orthopedics, gastroenterology, and plastic surgery. They closely scrutinize departments said that make less money, such as the emergency department or primary care, Ms. Dooley said. Physicians or teams that don’t fit the firm’s cost-efficiency plans may be terminated or replaced.

On the other hand, Mr. Strode said physicians may see improved electronic health records and collections.

“Some of your overall overhead costs may be reduced, because they’re better at it,” Mr. Strode said. “When you’ve got more scale, the cost per patient, the cost per hour, the cost per procedure, goes down, and the cost that’s applied against your production will go down. As [practices grow], they have more bargaining power with payers and you can potentially get better rates. At least, that’s the promise.”

Analysts note that PE health care acquisitions show no signs of slowing and that it pays for physicians to know what to expect and how to cope if their practice or hospital is acquired. Whether physicians have some control over a buyout or are blindsided by the transition, it’s critical to know what to consider, how workloads might change, and your options for settling in or settling up.

The PE industry has about $2 trillion lined up for potential investments in 2023, said Ms. Dooley.

“PE firms are looking at health care to expend some of this dry powder,” Ms. Dooley continued. “If done correctly, PE firms that are aware of health care regulations, compliance, and patient care issues can ... remove redundant services and improve ... efficiencies, but the bad is when that doesn’t happen, and the quality of care goes down or there are patient safety risks.”
 

How to prepare for and cope with PE partnerships

If your practice is considering a PE partnership, it’s important to explore the terms and conditions and carefully weigh the pros and cons, said Gary Herschman, a Newark, N.J.–based attorney who advises PE-owned physician groups.

“My recommendation is that physicians at a minimum conduct due diligence on all potential strategic options for their groups, and then make an informed decision regarding whether a partnership transaction is right for their group, as it’s not right for every group,” he said.

When Texas cardiologist Rick Snyder, MD, was considering PE partnerships, he spoke with physicians who made similar deals to determine whether they were satisfied years later, he said. In April, Snyder’s practice, HeartPlace, the largest physician-owned cardiology practice in Texas, was acquired by US Heart & Vascular, a practice management platform backed by PE firm Ares Management.

“I called every group that I knew that had done private equity for any meaningful amount of time,” Dr. Snyder said. “For the first year or two, everybody is in the honeymoon period. If the model is going to succeed or break down, it’s not going to be in the first year or two. So I wanted to talk to groups that had done this for a longer amount of time and find out what their pitfalls were. What would they have done differently? Has it been a productive relationship? Did they grow?”

Dr. Snyder, president of the Texas Medical Association, said his practice met with seven or eight firms before choosing one that best met their needs. His group wanted a platform that preserved their clinical autonomy, governance, and culture, he said. They also wanted to ensure they were not entering into a “buy and flip” scenario, but rather a “buy and build” plan.

“Thus, financial capital was not sufficient, they also had to have intellectual capital and relationship capital on their bench,” he said. “When we found the partner that embraced all of these factors as well as a history of buying and long-term building, we pulled the trigger and partnered with Ares and US Heart & Vascular Management. The partner we chose did not offer us the most money. We put a premium on these other criteria.”

“I always tell docs, know the culture of your group and your vision,” he said. “Before you go down that route, ask yourself what you want to accomplish and if it makes sense having a private equity partner to accomplish that vision with.”

For younger physicians or those with little control over buyouts, experts recommend they review their contracts and consider consulting with an attorney to better understand how the deal may affect their earnings and career prospects.

Those who have a much longer career runway need to weigh whether they want to work for a PE-linked practice, Mr. Strode said. For some, it’s time to check when their noncompete agreements end and find a position elsewhere.

Also, physicians should know their rights and the laws in their states regarding the corporate practice of medicine. Statutes vary by state, and knowing the provisions in your state helps doctors recognize their legal rights, learn possible exceptions to the requirements, and know the penalties for violations.

In Michigan, a group of physicians and other health professionals at Ascension St. John has voted to unionize. Doctors hope that the union, which includes advanced practice clinicians, nurse practitioners, and physician assistants, will help improve patient care and protect working conditions for staff, Dr. Wiener said.

She advises physicians who are unhappy after acquisitions to speak up and stick together.

“That’s the biggest thing I think physicians should start doing,” she said. “Support each other and stand up. You are stronger together.”
 

Why is PE so attracted to health care?

PE firms typically buy practices or hospitals, work to make the entities more profitable, and then sell them, with the goal of doubling or tripling their investment over a short period. In general, PE firms aim for annual returns exceeding 20% after 3-7 years.

These firms know that health care is relatively recession-proof, that providers have third-party payers, and that the industry is fragmented and requires more efficiency, Ms. Dooley said.

When PE practice acquisitions started gaining momentum about 12 years ago, traditional hospital-based specialties such as anesthesiology and radiology were prime targets, said Mr. Strode.

At the same time, increasing challenges in private practice, such as declining compensation from payers, pressure to participate in value-based care programs, and rising regional competitors have fueled more physician groups to partner with PE firms, Mr. Herschman noted.

Physicians who partner with PE firms often benefit by having new access to capital to grow their practices, cost savings through group purchasing, and the ability to compete with larger health groups, Mr. Herschman said.

Questions remain, however, about how PE involvement affects health care use and spending. An April 2023 JAMA Viewpoint article called out the lack of oversight and regulation in the health care/PE space, suggesting that a stronger framework for regulation and transparency is needed.

A 2022 study in JAMA Health Forum that examined changes in prices and utilization associated with the PE acquisitions of 578 dermatology, gastroenterology, and ophthalmology physician practices from 2016 to 2020 found that prices increased by an average of 11%, and volume rose by 16%, after acquisition.

“We found that acquisitions were associated with increases in health care spending and utilization, as well as some other patterns of care like potential upcoding,” said Jane M. Zhu, MD, an author of the study and assistant professor at Oregon Health & Science University in Portland.

Another recent study that Dr. Zhu coauthored, published in Health Affairs, found that physician practices acquired by PE firms experience greater staff turnover and rely more heavily on advanced practice professionals than doctors.

“To the extent that that turnover indicates physicians are dissatisfied after private equity comes in, that’s really important to investigate further,” Dr. Zhu said.

PE firms owned 4% of U.S. hospitals in 2021 and 11% of nursing homes, according to a Medicare Payment Advisory Commission (MedPAC) report. The report does not include 2021 data on medical practices but notes that from 2013 to 2016, PE firms acquired at least 2% of physician practices. Estimates of PE deals are probably lower than actual numbers because of the lack of comprehensive information sources, according to the MedPAC report.

A version of this article appeared on Medscape.com.

After her emergency medicine group was acquired by a staffing firm backed by a large private equity (PE) firm, Michelle Wiener, MD, said the workflow changes came swiftly.

“Our staffing has been greatly reduced,” the Detroit physician said. “At this point, we have no say in anything. We have no say in the scheduling. We aren’t allowed to see what is billed under our name. The morale has really gone down.”

Dr. Wiener, who practices at Ascension St. John Hospital, said she and fellow physicians have repeatedly brought their concerns to TeamHealth, which in 2015 took over St. John Emergency Services PC. TeamHealth is owned by PE giant Blackstone.

“It’s very frustrating,” Dr. Wiener said. “We’re taking it from all sides.”

Blackstone and Ascension St. John did not respond to this news organization’s request for comment.

TeamHealth would not respond directly to questions about the Ascension St. John Hospital physicians or their concerns.

Spokesman Josh Hopson provided only a general statement: “TeamHealth is committed to making sure that clinicians have the resources and support needed to provide first-class care to patients, particularly with regard to staffing and compensation. TeamHealth has and will always put patient care first, and that is not impacted by its ownership model.”

Acquisitions of medical practices and hospitals by PE firms are rapidly growing, with more than 1,400 PE deals in health care in 2021 totaling upwards of $208 billion, according to PitchBook Data Inc., a Seattle-based firm that tracks mergers and acquisitions.

Some physicians praise the partnerships as an opportunity to improve technology and efficiency, whereas others decry them as raising patient costs and lowering the quality of care. A recent UC Berkeley study found that PE ownership of medical practices was linked to consumer price increases for 8 of 10 specialties, most notably oncology and gastroenterology.
 

What should you expect after PE acquisition?

Since his practice partnered with a PE firm in 2020, Milwaukee-based otolaryngologist Madan Kandula, MD, said he has found the changes positive. The practice has grown and improved operations in finance, accounting, compliance, and information technology, said Dr. Kandula, founder and CEO of Advent, an ENT practice with 15 clinics in four Midwestern states.

Dr. Kandula said his group already had a sound business practice, and that the goal of partnering with a PE firm wasn’t to change day-to-day operations but to propel the organization forward.

“From patient load to visit time to how we staff our clinics, there has been no change,” he said. “My private equity firm does not, [and] cannot, impose their will on our clinical decisions.”

Experts say the impact of PE acquisitions on individual physicians often depends on where a doctor ranks in the organization, what stage they are in their career, and how much control they had over the deal.

“It’s the older physicians who are usually selling the practice and getting the big payout,” said Anjali Dooley, a St. Louis–based health law attorney who counsels physicians about PE deals. “The younger doctors are usually not part of the deal, as they may still be employees. They don’t have any negotiating power. Hopefully, there is some transparency, but sometimes there is not, and they are blindsided by the deal.”

When it comes to workload, most PE-owned groups are put on a production-based model, such as a wRVU-based model, said Roger Strode, a Chicago-based health law attorney who focuses on health care mergers and acquisitions. Most already operate under such a model, but there might be some changes after a buyout.

Staffing may also change, added Ms. Dooley. The PE firms may want to add partners or companies already in their portfolios to create efficiencies, causing training or workflow changes.

In a hospital buyout, changes may depend on whether a department is a significant revenue generator for the hospital, Ms. Dooley noted.

PE firms frequently favor higher revenue–generating specialties, such as neurosurgery, cardiology, orthopedics, gastroenterology, and plastic surgery. They closely scrutinize departments said that make less money, such as the emergency department or primary care, Ms. Dooley said. Physicians or teams that don’t fit the firm’s cost-efficiency plans may be terminated or replaced.

On the other hand, Mr. Strode said physicians may see improved electronic health records and collections.

“Some of your overall overhead costs may be reduced, because they’re better at it,” Mr. Strode said. “When you’ve got more scale, the cost per patient, the cost per hour, the cost per procedure, goes down, and the cost that’s applied against your production will go down. As [practices grow], they have more bargaining power with payers and you can potentially get better rates. At least, that’s the promise.”

Analysts note that PE health care acquisitions show no signs of slowing and that it pays for physicians to know what to expect and how to cope if their practice or hospital is acquired. Whether physicians have some control over a buyout or are blindsided by the transition, it’s critical to know what to consider, how workloads might change, and your options for settling in or settling up.

The PE industry has about $2 trillion lined up for potential investments in 2023, said Ms. Dooley.

“PE firms are looking at health care to expend some of this dry powder,” Ms. Dooley continued. “If done correctly, PE firms that are aware of health care regulations, compliance, and patient care issues can ... remove redundant services and improve ... efficiencies, but the bad is when that doesn’t happen, and the quality of care goes down or there are patient safety risks.”
 

How to prepare for and cope with PE partnerships

If your practice is considering a PE partnership, it’s important to explore the terms and conditions and carefully weigh the pros and cons, said Gary Herschman, a Newark, N.J.–based attorney who advises PE-owned physician groups.

“My recommendation is that physicians at a minimum conduct due diligence on all potential strategic options for their groups, and then make an informed decision regarding whether a partnership transaction is right for their group, as it’s not right for every group,” he said.

When Texas cardiologist Rick Snyder, MD, was considering PE partnerships, he spoke with physicians who made similar deals to determine whether they were satisfied years later, he said. In April, Snyder’s practice, HeartPlace, the largest physician-owned cardiology practice in Texas, was acquired by US Heart & Vascular, a practice management platform backed by PE firm Ares Management.

“I called every group that I knew that had done private equity for any meaningful amount of time,” Dr. Snyder said. “For the first year or two, everybody is in the honeymoon period. If the model is going to succeed or break down, it’s not going to be in the first year or two. So I wanted to talk to groups that had done this for a longer amount of time and find out what their pitfalls were. What would they have done differently? Has it been a productive relationship? Did they grow?”

Dr. Snyder, president of the Texas Medical Association, said his practice met with seven or eight firms before choosing one that best met their needs. His group wanted a platform that preserved their clinical autonomy, governance, and culture, he said. They also wanted to ensure they were not entering into a “buy and flip” scenario, but rather a “buy and build” plan.

“Thus, financial capital was not sufficient, they also had to have intellectual capital and relationship capital on their bench,” he said. “When we found the partner that embraced all of these factors as well as a history of buying and long-term building, we pulled the trigger and partnered with Ares and US Heart & Vascular Management. The partner we chose did not offer us the most money. We put a premium on these other criteria.”

“I always tell docs, know the culture of your group and your vision,” he said. “Before you go down that route, ask yourself what you want to accomplish and if it makes sense having a private equity partner to accomplish that vision with.”

For younger physicians or those with little control over buyouts, experts recommend they review their contracts and consider consulting with an attorney to better understand how the deal may affect their earnings and career prospects.

Those who have a much longer career runway need to weigh whether they want to work for a PE-linked practice, Mr. Strode said. For some, it’s time to check when their noncompete agreements end and find a position elsewhere.

Also, physicians should know their rights and the laws in their states regarding the corporate practice of medicine. Statutes vary by state, and knowing the provisions in your state helps doctors recognize their legal rights, learn possible exceptions to the requirements, and know the penalties for violations.

In Michigan, a group of physicians and other health professionals at Ascension St. John has voted to unionize. Doctors hope that the union, which includes advanced practice clinicians, nurse practitioners, and physician assistants, will help improve patient care and protect working conditions for staff, Dr. Wiener said.

She advises physicians who are unhappy after acquisitions to speak up and stick together.

“That’s the biggest thing I think physicians should start doing,” she said. “Support each other and stand up. You are stronger together.”
 

Why is PE so attracted to health care?

PE firms typically buy practices or hospitals, work to make the entities more profitable, and then sell them, with the goal of doubling or tripling their investment over a short period. In general, PE firms aim for annual returns exceeding 20% after 3-7 years.

These firms know that health care is relatively recession-proof, that providers have third-party payers, and that the industry is fragmented and requires more efficiency, Ms. Dooley said.

When PE practice acquisitions started gaining momentum about 12 years ago, traditional hospital-based specialties such as anesthesiology and radiology were prime targets, said Mr. Strode.

At the same time, increasing challenges in private practice, such as declining compensation from payers, pressure to participate in value-based care programs, and rising regional competitors have fueled more physician groups to partner with PE firms, Mr. Herschman noted.

Physicians who partner with PE firms often benefit by having new access to capital to grow their practices, cost savings through group purchasing, and the ability to compete with larger health groups, Mr. Herschman said.

Questions remain, however, about how PE involvement affects health care use and spending. An April 2023 JAMA Viewpoint article called out the lack of oversight and regulation in the health care/PE space, suggesting that a stronger framework for regulation and transparency is needed.

A 2022 study in JAMA Health Forum that examined changes in prices and utilization associated with the PE acquisitions of 578 dermatology, gastroenterology, and ophthalmology physician practices from 2016 to 2020 found that prices increased by an average of 11%, and volume rose by 16%, after acquisition.

“We found that acquisitions were associated with increases in health care spending and utilization, as well as some other patterns of care like potential upcoding,” said Jane M. Zhu, MD, an author of the study and assistant professor at Oregon Health & Science University in Portland.

Another recent study that Dr. Zhu coauthored, published in Health Affairs, found that physician practices acquired by PE firms experience greater staff turnover and rely more heavily on advanced practice professionals than doctors.

“To the extent that that turnover indicates physicians are dissatisfied after private equity comes in, that’s really important to investigate further,” Dr. Zhu said.

PE firms owned 4% of U.S. hospitals in 2021 and 11% of nursing homes, according to a Medicare Payment Advisory Commission (MedPAC) report. The report does not include 2021 data on medical practices but notes that from 2013 to 2016, PE firms acquired at least 2% of physician practices. Estimates of PE deals are probably lower than actual numbers because of the lack of comprehensive information sources, according to the MedPAC report.

A version of this article appeared on Medscape.com.

After her emergency medicine group was acquired by a staffing firm backed by a large private equity (PE) firm, Michelle Wiener, MD, said the workflow changes came swiftly.

“Our staffing has been greatly reduced,” the Detroit physician said. “At this point, we have no say in anything. We have no say in the scheduling. We aren’t allowed to see what is billed under our name. The morale has really gone down.”

Dr. Wiener, who practices at Ascension St. John Hospital, said she and fellow physicians have repeatedly brought their concerns to TeamHealth, which in 2015 took over St. John Emergency Services PC. TeamHealth is owned by PE giant Blackstone.

“It’s very frustrating,” Dr. Wiener said. “We’re taking it from all sides.”

Blackstone and Ascension St. John did not respond to this news organization’s request for comment.

TeamHealth would not respond directly to questions about the Ascension St. John Hospital physicians or their concerns.

Spokesman Josh Hopson provided only a general statement: “TeamHealth is committed to making sure that clinicians have the resources and support needed to provide first-class care to patients, particularly with regard to staffing and compensation. TeamHealth has and will always put patient care first, and that is not impacted by its ownership model.”

Acquisitions of medical practices and hospitals by PE firms are rapidly growing, with more than 1,400 PE deals in health care in 2021 totaling upwards of $208 billion, according to PitchBook Data Inc., a Seattle-based firm that tracks mergers and acquisitions.

Some physicians praise the partnerships as an opportunity to improve technology and efficiency, whereas others decry them as raising patient costs and lowering the quality of care. A recent UC Berkeley study found that PE ownership of medical practices was linked to consumer price increases for 8 of 10 specialties, most notably oncology and gastroenterology.
 

What should you expect after PE acquisition?

Since his practice partnered with a PE firm in 2020, Milwaukee-based otolaryngologist Madan Kandula, MD, said he has found the changes positive. The practice has grown and improved operations in finance, accounting, compliance, and information technology, said Dr. Kandula, founder and CEO of Advent, an ENT practice with 15 clinics in four Midwestern states.

Dr. Kandula said his group already had a sound business practice, and that the goal of partnering with a PE firm wasn’t to change day-to-day operations but to propel the organization forward.

“From patient load to visit time to how we staff our clinics, there has been no change,” he said. “My private equity firm does not, [and] cannot, impose their will on our clinical decisions.”

Experts say the impact of PE acquisitions on individual physicians often depends on where a doctor ranks in the organization, what stage they are in their career, and how much control they had over the deal.

“It’s the older physicians who are usually selling the practice and getting the big payout,” said Anjali Dooley, a St. Louis–based health law attorney who counsels physicians about PE deals. “The younger doctors are usually not part of the deal, as they may still be employees. They don’t have any negotiating power. Hopefully, there is some transparency, but sometimes there is not, and they are blindsided by the deal.”

When it comes to workload, most PE-owned groups are put on a production-based model, such as a wRVU-based model, said Roger Strode, a Chicago-based health law attorney who focuses on health care mergers and acquisitions. Most already operate under such a model, but there might be some changes after a buyout.

Staffing may also change, added Ms. Dooley. The PE firms may want to add partners or companies already in their portfolios to create efficiencies, causing training or workflow changes.

In a hospital buyout, changes may depend on whether a department is a significant revenue generator for the hospital, Ms. Dooley noted.

PE firms frequently favor higher revenue–generating specialties, such as neurosurgery, cardiology, orthopedics, gastroenterology, and plastic surgery. They closely scrutinize departments said that make less money, such as the emergency department or primary care, Ms. Dooley said. Physicians or teams that don’t fit the firm’s cost-efficiency plans may be terminated or replaced.

On the other hand, Mr. Strode said physicians may see improved electronic health records and collections.

“Some of your overall overhead costs may be reduced, because they’re better at it,” Mr. Strode said. “When you’ve got more scale, the cost per patient, the cost per hour, the cost per procedure, goes down, and the cost that’s applied against your production will go down. As [practices grow], they have more bargaining power with payers and you can potentially get better rates. At least, that’s the promise.”

Analysts note that PE health care acquisitions show no signs of slowing and that it pays for physicians to know what to expect and how to cope if their practice or hospital is acquired. Whether physicians have some control over a buyout or are blindsided by the transition, it’s critical to know what to consider, how workloads might change, and your options for settling in or settling up.

The PE industry has about $2 trillion lined up for potential investments in 2023, said Ms. Dooley.

“PE firms are looking at health care to expend some of this dry powder,” Ms. Dooley continued. “If done correctly, PE firms that are aware of health care regulations, compliance, and patient care issues can ... remove redundant services and improve ... efficiencies, but the bad is when that doesn’t happen, and the quality of care goes down or there are patient safety risks.”
 

How to prepare for and cope with PE partnerships

If your practice is considering a PE partnership, it’s important to explore the terms and conditions and carefully weigh the pros and cons, said Gary Herschman, a Newark, N.J.–based attorney who advises PE-owned physician groups.

“My recommendation is that physicians at a minimum conduct due diligence on all potential strategic options for their groups, and then make an informed decision regarding whether a partnership transaction is right for their group, as it’s not right for every group,” he said.

When Texas cardiologist Rick Snyder, MD, was considering PE partnerships, he spoke with physicians who made similar deals to determine whether they were satisfied years later, he said. In April, Snyder’s practice, HeartPlace, the largest physician-owned cardiology practice in Texas, was acquired by US Heart & Vascular, a practice management platform backed by PE firm Ares Management.

“I called every group that I knew that had done private equity for any meaningful amount of time,” Dr. Snyder said. “For the first year or two, everybody is in the honeymoon period. If the model is going to succeed or break down, it’s not going to be in the first year or two. So I wanted to talk to groups that had done this for a longer amount of time and find out what their pitfalls were. What would they have done differently? Has it been a productive relationship? Did they grow?”

Dr. Snyder, president of the Texas Medical Association, said his practice met with seven or eight firms before choosing one that best met their needs. His group wanted a platform that preserved their clinical autonomy, governance, and culture, he said. They also wanted to ensure they were not entering into a “buy and flip” scenario, but rather a “buy and build” plan.

“Thus, financial capital was not sufficient, they also had to have intellectual capital and relationship capital on their bench,” he said. “When we found the partner that embraced all of these factors as well as a history of buying and long-term building, we pulled the trigger and partnered with Ares and US Heart & Vascular Management. The partner we chose did not offer us the most money. We put a premium on these other criteria.”

“I always tell docs, know the culture of your group and your vision,” he said. “Before you go down that route, ask yourself what you want to accomplish and if it makes sense having a private equity partner to accomplish that vision with.”

For younger physicians or those with little control over buyouts, experts recommend they review their contracts and consider consulting with an attorney to better understand how the deal may affect their earnings and career prospects.

Those who have a much longer career runway need to weigh whether they want to work for a PE-linked practice, Mr. Strode said. For some, it’s time to check when their noncompete agreements end and find a position elsewhere.

Also, physicians should know their rights and the laws in their states regarding the corporate practice of medicine. Statutes vary by state, and knowing the provisions in your state helps doctors recognize their legal rights, learn possible exceptions to the requirements, and know the penalties for violations.

In Michigan, a group of physicians and other health professionals at Ascension St. John has voted to unionize. Doctors hope that the union, which includes advanced practice clinicians, nurse practitioners, and physician assistants, will help improve patient care and protect working conditions for staff, Dr. Wiener said.

She advises physicians who are unhappy after acquisitions to speak up and stick together.

“That’s the biggest thing I think physicians should start doing,” she said. “Support each other and stand up. You are stronger together.”
 

Why is PE so attracted to health care?

PE firms typically buy practices or hospitals, work to make the entities more profitable, and then sell them, with the goal of doubling or tripling their investment over a short period. In general, PE firms aim for annual returns exceeding 20% after 3-7 years.

These firms know that health care is relatively recession-proof, that providers have third-party payers, and that the industry is fragmented and requires more efficiency, Ms. Dooley said.

When PE practice acquisitions started gaining momentum about 12 years ago, traditional hospital-based specialties such as anesthesiology and radiology were prime targets, said Mr. Strode.

At the same time, increasing challenges in private practice, such as declining compensation from payers, pressure to participate in value-based care programs, and rising regional competitors have fueled more physician groups to partner with PE firms, Mr. Herschman noted.

Physicians who partner with PE firms often benefit by having new access to capital to grow their practices, cost savings through group purchasing, and the ability to compete with larger health groups, Mr. Herschman said.

Questions remain, however, about how PE involvement affects health care use and spending. An April 2023 JAMA Viewpoint article called out the lack of oversight and regulation in the health care/PE space, suggesting that a stronger framework for regulation and transparency is needed.

A 2022 study in JAMA Health Forum that examined changes in prices and utilization associated with the PE acquisitions of 578 dermatology, gastroenterology, and ophthalmology physician practices from 2016 to 2020 found that prices increased by an average of 11%, and volume rose by 16%, after acquisition.

“We found that acquisitions were associated with increases in health care spending and utilization, as well as some other patterns of care like potential upcoding,” said Jane M. Zhu, MD, an author of the study and assistant professor at Oregon Health & Science University in Portland.

Another recent study that Dr. Zhu coauthored, published in Health Affairs, found that physician practices acquired by PE firms experience greater staff turnover and rely more heavily on advanced practice professionals than doctors.

“To the extent that that turnover indicates physicians are dissatisfied after private equity comes in, that’s really important to investigate further,” Dr. Zhu said.

PE firms owned 4% of U.S. hospitals in 2021 and 11% of nursing homes, according to a Medicare Payment Advisory Commission (MedPAC) report. The report does not include 2021 data on medical practices but notes that from 2013 to 2016, PE firms acquired at least 2% of physician practices. Estimates of PE deals are probably lower than actual numbers because of the lack of comprehensive information sources, according to the MedPAC report.

A version of this article appeared on Medscape.com.

Only a small fraction of older adults in the early stages of Alzheimer’s disease (AD) meet eligibility criteria to receive treatment with newly approved antiamyloid drugs, largely because of the presence of medical conditions or neuroimaging findings, new research shows. 

Applying the clinical trial criteria, only about 8%-17% of amyloid-positive individuals with early AD would be eligible for lecanemab (Leqembi), and even fewer, 5%-9%, would be eligible for aducanumab (Aduhelm), the researchers found.

This study highlights the “limited suitability” of most adults with mild cognitive impairment (MCI) or mild dementia with elevated brain amyloid for treatment with these anti–beta amyloid monoclonal antibodies, write Maria Vassilaki, MD, PhD, and colleagues with Mayo Clinic, Rochester, Minn.

The study was published online in Neurology 

The authors of an accompanying editorial write that this study “provides an important estimate of treatment eligibility for amyloid-lowering monoclonal antibodies for early AD to help health systems make realistic plans for providing these treatments.”
 

More real-world data needed

Dr. Vassilaki and colleagues applied eligibility criteria for lecanemab and aducanumab to 237 older adults with MCI or mild dementia and increased brain amyloid burden from the Mayo Clinic Study of Aging (MCSA). Their mean age was 80.9 years, 55% were men, and most were White. 

After applying lecanemab’s inclusion criteria, less than half of the study population was eligible to receive treatment (112 of 237, or 47%). 

A total of 21 people were excluded because of a body mass index less than 17 or greater than or equal to 35; 48 due to a Clinical Dementia Rating (CDR) global score other than 0.5 or 1.0; 46 because they did not meet WMS-R Logical Memory II scores for age; 8 because of a Mini Mental State Examination (MMSE) score outside the bounds of 22-30; and two because of a CDR memory score less than 0.5. 

Applying lecanemab’s exclusion criteria further narrowed the number of eligible participants from 112 to 19 (8% of 237). 

Notable exclusions included cardiopulmonary contraindications, central nervous system–related exclusions such as brain cancer, Parkinson’s disease, epilepsy or brain injury, imaging findings, and history of cancer. 

The results were similar for aducanumab, with 104 of the 237 participants (44%) meeting the trial’s inclusion criteria. Applying aducanumab’s exclusion criteria further reduced the number of eligible participants to 12 (5% of 237).

A sensitivity analysis including participants with MCI, without CDR global, MMSE, or WMS-R Logical Memory II score restrictions, resulted in a somewhat higher percentage of eligible participants (17.4% for lecanemab and 8.9% for aducanumab). 
 

Shared decision-making

“Clinicians and health systems should be aware that by applying the clinical trial criteria, a smaller percentage might be eligible for these treatments than originally anticipated,” Dr. Vassilaki told this news organization. To help clinicians, there are published recommendations for the appropriate use of these treatments, she noted. 

Given that clinical trial participants are typically healthier than the general population, Dr. Vassilaki said that research is needed to examine the safety and efficacy of antiamyloid therapies in larger, more diverse populations as well as in less healthy populations, before these therapies may be more widely available to people with AD. 

“We can take advantage of the postmarketing surveillance of side effects, and also enrollment of patients receiving these treatments to registries could provide us with data useful for any necessary adjustment to drug use,” Dr. Vassilaki told this news organization. 
 

‘Sharp focus’

This study “brings the issue of eligibility for amyloid-lowering antibody treatment into sharp focus,” Matthew Howe, MD, PhD, with Butler Hospital Memory & Aging Program, Providence, R.I., and colleagues note in their editorial. 

“The results underscore the importance of careful patient selection to help identify patients most likely to benefit from treatment and exclude those at risk for serious outcomes,” they write. 

They also write that appropriate use recommendations for lecanemab and aducanumab “will be revisited as more real-world data emerge, especially about safety.”

For now, clinicians “must exercise clinical judgment in selecting patients for treatment with shared decision-making with patients and families,” they add. 

The study was supported by the National Institutes of Health, the National Institute on Aging, the Alexander Family Alzheimer’s Disease Research Professorship of the Mayo Clinic, the Mayo Foundation for Medical Education and Research, the Liston Award, the GHR Foundation and the Schuler Foundation. Dr. Vassilaki has consulted for F. Hoffmann-La Roche and has equity ownership in Abbott Laboratories, Johnson & Johnson, Medtronic, Merck, and Amgen. Dr. Howe has no conflicts of interest. 

A version of this article first appeared on Medscape.com.

Only a small fraction of older adults in the early stages of Alzheimer’s disease (AD) meet eligibility criteria to receive treatment with newly approved antiamyloid drugs, largely because of the presence of medical conditions or neuroimaging findings, new research shows. 

Applying the clinical trial criteria, only about 8%-17% of amyloid-positive individuals with early AD would be eligible for lecanemab (Leqembi), and even fewer, 5%-9%, would be eligible for aducanumab (Aduhelm), the researchers found.

This study highlights the “limited suitability” of most adults with mild cognitive impairment (MCI) or mild dementia with elevated brain amyloid for treatment with these anti–beta amyloid monoclonal antibodies, write Maria Vassilaki, MD, PhD, and colleagues with Mayo Clinic, Rochester, Minn.

The study was published online in Neurology 

The authors of an accompanying editorial write that this study “provides an important estimate of treatment eligibility for amyloid-lowering monoclonal antibodies for early AD to help health systems make realistic plans for providing these treatments.”
 

More real-world data needed

Dr. Vassilaki and colleagues applied eligibility criteria for lecanemab and aducanumab to 237 older adults with MCI or mild dementia and increased brain amyloid burden from the Mayo Clinic Study of Aging (MCSA). Their mean age was 80.9 years, 55% were men, and most were White. 

After applying lecanemab’s inclusion criteria, less than half of the study population was eligible to receive treatment (112 of 237, or 47%). 

A total of 21 people were excluded because of a body mass index less than 17 or greater than or equal to 35; 48 due to a Clinical Dementia Rating (CDR) global score other than 0.5 or 1.0; 46 because they did not meet WMS-R Logical Memory II scores for age; 8 because of a Mini Mental State Examination (MMSE) score outside the bounds of 22-30; and two because of a CDR memory score less than 0.5. 

Applying lecanemab’s exclusion criteria further narrowed the number of eligible participants from 112 to 19 (8% of 237). 

Notable exclusions included cardiopulmonary contraindications, central nervous system–related exclusions such as brain cancer, Parkinson’s disease, epilepsy or brain injury, imaging findings, and history of cancer. 

The results were similar for aducanumab, with 104 of the 237 participants (44%) meeting the trial’s inclusion criteria. Applying aducanumab’s exclusion criteria further reduced the number of eligible participants to 12 (5% of 237).

A sensitivity analysis including participants with MCI, without CDR global, MMSE, or WMS-R Logical Memory II score restrictions, resulted in a somewhat higher percentage of eligible participants (17.4% for lecanemab and 8.9% for aducanumab). 
 

Shared decision-making

“Clinicians and health systems should be aware that by applying the clinical trial criteria, a smaller percentage might be eligible for these treatments than originally anticipated,” Dr. Vassilaki told this news organization. To help clinicians, there are published recommendations for the appropriate use of these treatments, she noted. 

Given that clinical trial participants are typically healthier than the general population, Dr. Vassilaki said that research is needed to examine the safety and efficacy of antiamyloid therapies in larger, more diverse populations as well as in less healthy populations, before these therapies may be more widely available to people with AD. 

“We can take advantage of the postmarketing surveillance of side effects, and also enrollment of patients receiving these treatments to registries could provide us with data useful for any necessary adjustment to drug use,” Dr. Vassilaki told this news organization. 
 

‘Sharp focus’

This study “brings the issue of eligibility for amyloid-lowering antibody treatment into sharp focus,” Matthew Howe, MD, PhD, with Butler Hospital Memory & Aging Program, Providence, R.I., and colleagues note in their editorial. 

“The results underscore the importance of careful patient selection to help identify patients most likely to benefit from treatment and exclude those at risk for serious outcomes,” they write. 

They also write that appropriate use recommendations for lecanemab and aducanumab “will be revisited as more real-world data emerge, especially about safety.”

For now, clinicians “must exercise clinical judgment in selecting patients for treatment with shared decision-making with patients and families,” they add. 

The study was supported by the National Institutes of Health, the National Institute on Aging, the Alexander Family Alzheimer’s Disease Research Professorship of the Mayo Clinic, the Mayo Foundation for Medical Education and Research, the Liston Award, the GHR Foundation and the Schuler Foundation. Dr. Vassilaki has consulted for F. Hoffmann-La Roche and has equity ownership in Abbott Laboratories, Johnson & Johnson, Medtronic, Merck, and Amgen. Dr. Howe has no conflicts of interest. 

A version of this article first appeared on Medscape.com.

Only a small fraction of older adults in the early stages of Alzheimer’s disease (AD) meet eligibility criteria to receive treatment with newly approved antiamyloid drugs, largely because of the presence of medical conditions or neuroimaging findings, new research shows. 

Applying the clinical trial criteria, only about 8%-17% of amyloid-positive individuals with early AD would be eligible for lecanemab (Leqembi), and even fewer, 5%-9%, would be eligible for aducanumab (Aduhelm), the researchers found.

This study highlights the “limited suitability” of most adults with mild cognitive impairment (MCI) or mild dementia with elevated brain amyloid for treatment with these anti–beta amyloid monoclonal antibodies, write Maria Vassilaki, MD, PhD, and colleagues with Mayo Clinic, Rochester, Minn.

The study was published online in Neurology 

The authors of an accompanying editorial write that this study “provides an important estimate of treatment eligibility for amyloid-lowering monoclonal antibodies for early AD to help health systems make realistic plans for providing these treatments.”
 

More real-world data needed

Dr. Vassilaki and colleagues applied eligibility criteria for lecanemab and aducanumab to 237 older adults with MCI or mild dementia and increased brain amyloid burden from the Mayo Clinic Study of Aging (MCSA). Their mean age was 80.9 years, 55% were men, and most were White. 

After applying lecanemab’s inclusion criteria, less than half of the study population was eligible to receive treatment (112 of 237, or 47%). 

A total of 21 people were excluded because of a body mass index less than 17 or greater than or equal to 35; 48 due to a Clinical Dementia Rating (CDR) global score other than 0.5 or 1.0; 46 because they did not meet WMS-R Logical Memory II scores for age; 8 because of a Mini Mental State Examination (MMSE) score outside the bounds of 22-30; and two because of a CDR memory score less than 0.5. 

Applying lecanemab’s exclusion criteria further narrowed the number of eligible participants from 112 to 19 (8% of 237). 

Notable exclusions included cardiopulmonary contraindications, central nervous system–related exclusions such as brain cancer, Parkinson’s disease, epilepsy or brain injury, imaging findings, and history of cancer. 

The results were similar for aducanumab, with 104 of the 237 participants (44%) meeting the trial’s inclusion criteria. Applying aducanumab’s exclusion criteria further reduced the number of eligible participants to 12 (5% of 237).

A sensitivity analysis including participants with MCI, without CDR global, MMSE, or WMS-R Logical Memory II score restrictions, resulted in a somewhat higher percentage of eligible participants (17.4% for lecanemab and 8.9% for aducanumab). 
 

Shared decision-making

“Clinicians and health systems should be aware that by applying the clinical trial criteria, a smaller percentage might be eligible for these treatments than originally anticipated,” Dr. Vassilaki told this news organization. To help clinicians, there are published recommendations for the appropriate use of these treatments, she noted. 

Given that clinical trial participants are typically healthier than the general population, Dr. Vassilaki said that research is needed to examine the safety and efficacy of antiamyloid therapies in larger, more diverse populations as well as in less healthy populations, before these therapies may be more widely available to people with AD. 

“We can take advantage of the postmarketing surveillance of side effects, and also enrollment of patients receiving these treatments to registries could provide us with data useful for any necessary adjustment to drug use,” Dr. Vassilaki told this news organization. 
 

‘Sharp focus’

This study “brings the issue of eligibility for amyloid-lowering antibody treatment into sharp focus,” Matthew Howe, MD, PhD, with Butler Hospital Memory & Aging Program, Providence, R.I., and colleagues note in their editorial. 

“The results underscore the importance of careful patient selection to help identify patients most likely to benefit from treatment and exclude those at risk for serious outcomes,” they write. 

They also write that appropriate use recommendations for lecanemab and aducanumab “will be revisited as more real-world data emerge, especially about safety.”

For now, clinicians “must exercise clinical judgment in selecting patients for treatment with shared decision-making with patients and families,” they add. 

The study was supported by the National Institutes of Health, the National Institute on Aging, the Alexander Family Alzheimer’s Disease Research Professorship of the Mayo Clinic, the Mayo Foundation for Medical Education and Research, the Liston Award, the GHR Foundation and the Schuler Foundation. Dr. Vassilaki has consulted for F. Hoffmann-La Roche and has equity ownership in Abbott Laboratories, Johnson & Johnson, Medtronic, Merck, and Amgen. Dr. Howe has no conflicts of interest. 

A version of this article first appeared on Medscape.com.

The anti–amyloid-beta monoclonal antibodies lecanemab and aducanumab have introduced a new class of drugs for targeting early stage Alzheimer’s disease, but fewer than 10% of older adults with early signs of the disease would meet eligibility requirements to receive either treatment, a cross sectional study has found.

Reporting in the journal Neurology, researchers from the Mayo Clinic in Rochester, Minn., and the University of Chicago found that only a small percentage of patients in the Mayo Clinic Study of Aging (MCSA) with mild cognitive impairment (MCI) or mild dementia due to Alzheimer’s disease would meet the clinical trial eligibility requirements of either agent.

Mayo Clinic

“Our study results show only a small percentage of people with early Alzheimer’s disease may be eligible to receive treatment, mostly due to chronic health conditions and brain scan abnormalities common in older adults,” said lead researcher Maria Vassilaki, MD, PhD, an epidemiologist at Mayo Clinic in Rochester, Minn.
 

Applying clinical trial exclusion criteria to a broader population

The study included 237 people aged 50-90, 222 who had MCI and 15 with mild dementia, and whose brain scans showed increased amounts of amyloid-beta plaques. Average age of the participants was 80.9 years and 97.5% were White (99.6% not Hispanic or Latino).

The researchers then looked at the eligibility criteria for the pivotal clinical trials for lecanemab, which the U.S. Food and Drug Administration approved in January this year, and aducanumab, which the FDA cleared in 2021. Both drugs received FDA accelerated approval.

For lecanemab, clinical trial inclusion required specific scores for the Clinical Dementia Rating (CDR) (other than 0.5 or 1.0), Wechsler Memory Scale (WMS-R) Logical Memory II (which varied with age group), or Mini-Mental State Examination (MMSE) (22 to 30). A body mass index between 17 and 35 kg/m² was also an inclusion criteria. Only 112 people, or 47%, met the inclusion criteria. Exclusion criteria included a history of cardiovascular disease or cancer, Parkinson’s disease, or brain injury, or a positive brain scan. When the exclusion criteria were applied, only 19 people, or 8%, qualified for the lecanemab trial.

When the researchers modified the exclusion criteria to include all study participants with MCI but not applying results from additional cognitive tests, 17.4% of MCSA patients would have been eligible for the lecanemab trial.

Aducanumab clinical trial inclusion criteria were a CDR global score other than 0.5 and an MMSE below 24, with an age cutoff of 85 years. Only 104 of the MCSA population, or 44%, met the clinical trial criteria. When the researchers applied the exclusion criteria for cardiovascular disease, central nervous system-related exclusions (such as brain cancer or epilepsy), a history of cancer, or brain scan abnormalities, they found that only 12 people, or 5%, would have been eligible for an aducanumab trial.

“Clinical trials often have strict eligibility criteria and could exclude those with other conditions that could be common in older adults,” Dr. Vassilaki said in emailed comments. “Thus, we wanted to examine if we apply these criteria to a study that recruits participants from the community, how many of the individuals in the early symptomatic stages, mild cognitive impairment or mild dementia due to Alzheimer’s disease, would be eligible for the treatment.”

Dr. Vassilaki said these drugs need to be studied in larger, more diverse populations, as well as in less healthy populations, before they’re more widely available to people with Alzheimer’s disease. “In addition,” she said, “we can learn more from the postmarketing surveillance of side effects and also from registries of patients receiving these treatments.”

One limitation of the study Dr. Vassilaki pointed out is the overwhelmingly White population. Evaluating the clinical trial eligibility criteria in more diverse populations is crucial, she said.
 

Estimating the number of patients who would qualify for treatment

In an accompanying commentary, Matthew Howes, MD, of Butler Hospital and Brown University in Providence, R.I., and colleagues wrote that the study findings provide health systems planning to offer amyloid-lowering antibodies for Alzheimer’s disease an estimate of how many patients would be eligible for the treatments. “Providers must exercise clinical judgment in selecting patients for treatment with shared decision-making with patients and families,” the commentators wrote.

The study was supported by the National Institutes of Health, the National Institute on Aging, the Alexander Family Alzheimer’s Disease Research Professorship of the Mayo Clinic, the Mayo Foundation for Medical Education and Research, the Liston Award, the GHR Foundation, and the Schuler Foundation. Dr. Vassilaki disclosed relationships with F. Hoffmann-La Roche, Abbott Laboratories, Johnson & Johnson, Medtronic, Merck, and Amgen. Dr. Howe has no relevant disclosures.
 

The anti–amyloid-beta monoclonal antibodies lecanemab and aducanumab have introduced a new class of drugs for targeting early stage Alzheimer’s disease, but fewer than 10% of older adults with early signs of the disease would meet eligibility requirements to receive either treatment, a cross sectional study has found.

Reporting in the journal Neurology, researchers from the Mayo Clinic in Rochester, Minn., and the University of Chicago found that only a small percentage of patients in the Mayo Clinic Study of Aging (MCSA) with mild cognitive impairment (MCI) or mild dementia due to Alzheimer’s disease would meet the clinical trial eligibility requirements of either agent.

Mayo Clinic

“Our study results show only a small percentage of people with early Alzheimer’s disease may be eligible to receive treatment, mostly due to chronic health conditions and brain scan abnormalities common in older adults,” said lead researcher Maria Vassilaki, MD, PhD, an epidemiologist at Mayo Clinic in Rochester, Minn.
 

Applying clinical trial exclusion criteria to a broader population

The study included 237 people aged 50-90, 222 who had MCI and 15 with mild dementia, and whose brain scans showed increased amounts of amyloid-beta plaques. Average age of the participants was 80.9 years and 97.5% were White (99.6% not Hispanic or Latino).

The researchers then looked at the eligibility criteria for the pivotal clinical trials for lecanemab, which the U.S. Food and Drug Administration approved in January this year, and aducanumab, which the FDA cleared in 2021. Both drugs received FDA accelerated approval.

For lecanemab, clinical trial inclusion required specific scores for the Clinical Dementia Rating (CDR) (other than 0.5 or 1.0), Wechsler Memory Scale (WMS-R) Logical Memory II (which varied with age group), or Mini-Mental State Examination (MMSE) (22 to 30). A body mass index between 17 and 35 kg/m² was also an inclusion criteria. Only 112 people, or 47%, met the inclusion criteria. Exclusion criteria included a history of cardiovascular disease or cancer, Parkinson’s disease, or brain injury, or a positive brain scan. When the exclusion criteria were applied, only 19 people, or 8%, qualified for the lecanemab trial.

When the researchers modified the exclusion criteria to include all study participants with MCI but not applying results from additional cognitive tests, 17.4% of MCSA patients would have been eligible for the lecanemab trial.

Aducanumab clinical trial inclusion criteria were a CDR global score other than 0.5 and an MMSE below 24, with an age cutoff of 85 years. Only 104 of the MCSA population, or 44%, met the clinical trial criteria. When the researchers applied the exclusion criteria for cardiovascular disease, central nervous system-related exclusions (such as brain cancer or epilepsy), a history of cancer, or brain scan abnormalities, they found that only 12 people, or 5%, would have been eligible for an aducanumab trial.

“Clinical trials often have strict eligibility criteria and could exclude those with other conditions that could be common in older adults,” Dr. Vassilaki said in emailed comments. “Thus, we wanted to examine if we apply these criteria to a study that recruits participants from the community, how many of the individuals in the early symptomatic stages, mild cognitive impairment or mild dementia due to Alzheimer’s disease, would be eligible for the treatment.”

Dr. Vassilaki said these drugs need to be studied in larger, more diverse populations, as well as in less healthy populations, before they’re more widely available to people with Alzheimer’s disease. “In addition,” she said, “we can learn more from the postmarketing surveillance of side effects and also from registries of patients receiving these treatments.”

One limitation of the study Dr. Vassilaki pointed out is the overwhelmingly White population. Evaluating the clinical trial eligibility criteria in more diverse populations is crucial, she said.
 

Estimating the number of patients who would qualify for treatment

In an accompanying commentary, Matthew Howes, MD, of Butler Hospital and Brown University in Providence, R.I., and colleagues wrote that the study findings provide health systems planning to offer amyloid-lowering antibodies for Alzheimer’s disease an estimate of how many patients would be eligible for the treatments. “Providers must exercise clinical judgment in selecting patients for treatment with shared decision-making with patients and families,” the commentators wrote.

The study was supported by the National Institutes of Health, the National Institute on Aging, the Alexander Family Alzheimer’s Disease Research Professorship of the Mayo Clinic, the Mayo Foundation for Medical Education and Research, the Liston Award, the GHR Foundation, and the Schuler Foundation. Dr. Vassilaki disclosed relationships with F. Hoffmann-La Roche, Abbott Laboratories, Johnson & Johnson, Medtronic, Merck, and Amgen. Dr. Howe has no relevant disclosures.
 

The anti–amyloid-beta monoclonal antibodies lecanemab and aducanumab have introduced a new class of drugs for targeting early stage Alzheimer’s disease, but fewer than 10% of older adults with early signs of the disease would meet eligibility requirements to receive either treatment, a cross sectional study has found.

Reporting in the journal Neurology, researchers from the Mayo Clinic in Rochester, Minn., and the University of Chicago found that only a small percentage of patients in the Mayo Clinic Study of Aging (MCSA) with mild cognitive impairment (MCI) or mild dementia due to Alzheimer’s disease would meet the clinical trial eligibility requirements of either agent.

Mayo Clinic

“Our study results show only a small percentage of people with early Alzheimer’s disease may be eligible to receive treatment, mostly due to chronic health conditions and brain scan abnormalities common in older adults,” said lead researcher Maria Vassilaki, MD, PhD, an epidemiologist at Mayo Clinic in Rochester, Minn.
 

Applying clinical trial exclusion criteria to a broader population

The study included 237 people aged 50-90, 222 who had MCI and 15 with mild dementia, and whose brain scans showed increased amounts of amyloid-beta plaques. Average age of the participants was 80.9 years and 97.5% were White (99.6% not Hispanic or Latino).

The researchers then looked at the eligibility criteria for the pivotal clinical trials for lecanemab, which the U.S. Food and Drug Administration approved in January this year, and aducanumab, which the FDA cleared in 2021. Both drugs received FDA accelerated approval.

For lecanemab, clinical trial inclusion required specific scores for the Clinical Dementia Rating (CDR) (other than 0.5 or 1.0), Wechsler Memory Scale (WMS-R) Logical Memory II (which varied with age group), or Mini-Mental State Examination (MMSE) (22 to 30). A body mass index between 17 and 35 kg/m² was also an inclusion criteria. Only 112 people, or 47%, met the inclusion criteria. Exclusion criteria included a history of cardiovascular disease or cancer, Parkinson’s disease, or brain injury, or a positive brain scan. When the exclusion criteria were applied, only 19 people, or 8%, qualified for the lecanemab trial.

When the researchers modified the exclusion criteria to include all study participants with MCI but not applying results from additional cognitive tests, 17.4% of MCSA patients would have been eligible for the lecanemab trial.

Aducanumab clinical trial inclusion criteria were a CDR global score other than 0.5 and an MMSE below 24, with an age cutoff of 85 years. Only 104 of the MCSA population, or 44%, met the clinical trial criteria. When the researchers applied the exclusion criteria for cardiovascular disease, central nervous system-related exclusions (such as brain cancer or epilepsy), a history of cancer, or brain scan abnormalities, they found that only 12 people, or 5%, would have been eligible for an aducanumab trial.

“Clinical trials often have strict eligibility criteria and could exclude those with other conditions that could be common in older adults,” Dr. Vassilaki said in emailed comments. “Thus, we wanted to examine if we apply these criteria to a study that recruits participants from the community, how many of the individuals in the early symptomatic stages, mild cognitive impairment or mild dementia due to Alzheimer’s disease, would be eligible for the treatment.”

Dr. Vassilaki said these drugs need to be studied in larger, more diverse populations, as well as in less healthy populations, before they’re more widely available to people with Alzheimer’s disease. “In addition,” she said, “we can learn more from the postmarketing surveillance of side effects and also from registries of patients receiving these treatments.”

One limitation of the study Dr. Vassilaki pointed out is the overwhelmingly White population. Evaluating the clinical trial eligibility criteria in more diverse populations is crucial, she said.
 

Estimating the number of patients who would qualify for treatment

In an accompanying commentary, Matthew Howes, MD, of Butler Hospital and Brown University in Providence, R.I., and colleagues wrote that the study findings provide health systems planning to offer amyloid-lowering antibodies for Alzheimer’s disease an estimate of how many patients would be eligible for the treatments. “Providers must exercise clinical judgment in selecting patients for treatment with shared decision-making with patients and families,” the commentators wrote.

The study was supported by the National Institutes of Health, the National Institute on Aging, the Alexander Family Alzheimer’s Disease Research Professorship of the Mayo Clinic, the Mayo Foundation for Medical Education and Research, the Liston Award, the GHR Foundation, and the Schuler Foundation. Dr. Vassilaki disclosed relationships with F. Hoffmann-La Roche, Abbott Laboratories, Johnson & Johnson, Medtronic, Merck, and Amgen. Dr. Howe has no relevant disclosures.
 

French researchers have been working on an innovative vaccine that targets tick microbiota to indirectly reduce the bacterial load within the vector. The results of their study were published in the journal Microbiome.

Ticks are vectors of many harmful pathogens that can cause life-threatening illnesses. Ixodes ricinus (in Europe) and Ixodes scapularis (in Canada and the United States) carry Borrelia, the bacteria that cause Lyme disease. At the moment, there is no vaccine for this disease. But that could all change, thanks to the findings of scientists at the National Research Institute for Agriculture, Food, and Environment (INRAE), in collaboration with the Agency for Food, Environmental, and Occupational Health and Safety and the National Veterinary School of Alfort, France.

“Ticks can transmit a broad variety of pathogens of medical importance, including Borrelia afzelii, the causative agent of Lyme borreliosis in Europe. Tick microbiota is an important factor modulating not only vector physiology, but also the vector competence,” the team reported. They focused their efforts on developing a vaccine that would disturb the tick microbiota and thus reduce Borrelia colonization.

To explore this indirect approach, they injected a harmless strain of Escherichia coli bacteria into mice, which then produced antibodies. Their reasoning was that when a tick bites one of these mice, the antibodies would pass into the arachnid’s microbiota and disturb it, thereby making the tick less harmful. And indeed, the researchers’ work showed that in the ticks that fed on vaccinated mice, levels of Borrelia levels were much lower than in than ticks that fed on unvaccinated mice (see video for an explanation). So, when given to a mouse, this vaccine “protects” the tick against colonization by Borrelia but does not protect the mouse against the disease.

The study has advanced this area of research in two significant ways: It provides new information on the importance of the microbiota when it comes to ticks that are infected with Borrelia, and it suggests an innovative vaccination strategy. Indeed, the results confirm that tick microbiota is essential for the development of Borrelia in the arachnid. As noted in an INRAE press release, “This is a key piece of data that opens the door to one day having an innovative vaccination strategy aimed at perturbing the microbiota of the vector of the Lyme disease agent.”

Dengue, Zika virus, and malaria are also transmitted by a vector – the mosquito. Innovative antimicrobiota vaccines may be able to control these diseases as well.

This article was translated from the Medscape French Edition. A version of this article appeared on Medscape.com.

French researchers have been working on an innovative vaccine that targets tick microbiota to indirectly reduce the bacterial load within the vector. The results of their study were published in the journal Microbiome.

Ticks are vectors of many harmful pathogens that can cause life-threatening illnesses. Ixodes ricinus (in Europe) and Ixodes scapularis (in Canada and the United States) carry Borrelia, the bacteria that cause Lyme disease. At the moment, there is no vaccine for this disease. But that could all change, thanks to the findings of scientists at the National Research Institute for Agriculture, Food, and Environment (INRAE), in collaboration with the Agency for Food, Environmental, and Occupational Health and Safety and the National Veterinary School of Alfort, France.

“Ticks can transmit a broad variety of pathogens of medical importance, including Borrelia afzelii, the causative agent of Lyme borreliosis in Europe. Tick microbiota is an important factor modulating not only vector physiology, but also the vector competence,” the team reported. They focused their efforts on developing a vaccine that would disturb the tick microbiota and thus reduce Borrelia colonization.

To explore this indirect approach, they injected a harmless strain of Escherichia coli bacteria into mice, which then produced antibodies. Their reasoning was that when a tick bites one of these mice, the antibodies would pass into the arachnid’s microbiota and disturb it, thereby making the tick less harmful. And indeed, the researchers’ work showed that in the ticks that fed on vaccinated mice, levels of Borrelia levels were much lower than in than ticks that fed on unvaccinated mice (see video for an explanation). So, when given to a mouse, this vaccine “protects” the tick against colonization by Borrelia but does not protect the mouse against the disease.

The study has advanced this area of research in two significant ways: It provides new information on the importance of the microbiota when it comes to ticks that are infected with Borrelia, and it suggests an innovative vaccination strategy. Indeed, the results confirm that tick microbiota is essential for the development of Borrelia in the arachnid. As noted in an INRAE press release, “This is a key piece of data that opens the door to one day having an innovative vaccination strategy aimed at perturbing the microbiota of the vector of the Lyme disease agent.”

Dengue, Zika virus, and malaria are also transmitted by a vector – the mosquito. Innovative antimicrobiota vaccines may be able to control these diseases as well.

This article was translated from the Medscape French Edition. A version of this article appeared on Medscape.com.

French researchers have been working on an innovative vaccine that targets tick microbiota to indirectly reduce the bacterial load within the vector. The results of their study were published in the journal Microbiome.

Ticks are vectors of many harmful pathogens that can cause life-threatening illnesses. Ixodes ricinus (in Europe) and Ixodes scapularis (in Canada and the United States) carry Borrelia, the bacteria that cause Lyme disease. At the moment, there is no vaccine for this disease. But that could all change, thanks to the findings of scientists at the National Research Institute for Agriculture, Food, and Environment (INRAE), in collaboration with the Agency for Food, Environmental, and Occupational Health and Safety and the National Veterinary School of Alfort, France.

“Ticks can transmit a broad variety of pathogens of medical importance, including Borrelia afzelii, the causative agent of Lyme borreliosis in Europe. Tick microbiota is an important factor modulating not only vector physiology, but also the vector competence,” the team reported. They focused their efforts on developing a vaccine that would disturb the tick microbiota and thus reduce Borrelia colonization.

To explore this indirect approach, they injected a harmless strain of Escherichia coli bacteria into mice, which then produced antibodies. Their reasoning was that when a tick bites one of these mice, the antibodies would pass into the arachnid’s microbiota and disturb it, thereby making the tick less harmful. And indeed, the researchers’ work showed that in the ticks that fed on vaccinated mice, levels of Borrelia levels were much lower than in than ticks that fed on unvaccinated mice (see video for an explanation). So, when given to a mouse, this vaccine “protects” the tick against colonization by Borrelia but does not protect the mouse against the disease.

The study has advanced this area of research in two significant ways: It provides new information on the importance of the microbiota when it comes to ticks that are infected with Borrelia, and it suggests an innovative vaccination strategy. Indeed, the results confirm that tick microbiota is essential for the development of Borrelia in the arachnid. As noted in an INRAE press release, “This is a key piece of data that opens the door to one day having an innovative vaccination strategy aimed at perturbing the microbiota of the vector of the Lyme disease agent.”

Dengue, Zika virus, and malaria are also transmitted by a vector – the mosquito. Innovative antimicrobiota vaccines may be able to control these diseases as well.

This article was translated from the Medscape French Edition. A version of this article appeared on Medscape.com.

New research suggests a potential link between playing tackle football and an increased risk of developing parkinsonism or Parkinson’s disease (PD).

In a cross-sectional study of older men, former tackle football players had a 61% higher likelihood of reporting a diagnosis of parkinsonism or PD, compared with men who played non-football sports.

solar22/Thinkstock

Longer duration of football participation and higher level of play (college and professional) were associated with higher risk.

Lead researcher Michael L. Alosco, PhD, director of the Boston University Alzheimer’s Disease Research Center, said it’s important to note that the findings are from a cohort of men “enriched” for having PD.

“These are people who are likely already concerned for or at risk for having this disease. We don’t yet know how our findings translate to the general population,” Dr. Alosco said in an interview.

The study was published online in JAMA Network Open.
 

Repetitive head impacts

Dating back to the 1920s, PD and parkinsonism an umbrella term that refers to motor symptoms associated with PD and other conditions have long been described in boxers who suffer repetitive head impacts.

Multiple studies have linked tackle football with progressive brain diseases such as chronic traumatic encephalopathy. Few studies, however, have investigated the association between participation in football and PD.

For their study, Dr. Alosco and colleagues leveraged data from Fox Insight, a longitudinal online study of some people with and some without PD that is sponsored by the Michael J. Fox Foundation for Parkinson’s Research.

They focused their analyses on 1,875 men (mean age, 67 years) who reported playing any organized sport. As noted, the cohort was enriched for parkinsonism or PD. A total of 1,602 (85%) had received a diagnosis of parkinsonism/PD, and 273 had not.

Altogether, 729 men had a history of playing tackle football, and 1,146 men played non-football sports (control group). Among the football players, 82% played at youth sports or at the high school level; 17% played at the college level; and fewer than 1% played at the pro or semi-pro level.

Among the football players, 648 (89%) reported a parkinsonism/PD diagnosis.

A history of playing football was associated with higher odds of reporting a parkinsonism/PD diagnosis (odds ratio, 1.61; 95% confidence interval, 1.19-2.17) after accounting for age, education level, history of diabetes and heart disease, body mass index (BMI), traumatic brain injury with loss of consciousness, and family history of PD.

Football players who had longer careers and who played at higher levels of competition were at increased risk of having parkinsonism or PD.

Playing one to four seasons yielded an OR of 1.39 (95% CI, 0.98-1.98). The OR was 2.18 (95% CI, 1.36-3.49) for playing five or more seasons.

Football players who competed at the college or professional level had nearly triple the odds of reporting a parkinsonism/PD diagnosis (OR, 2.93; 95% CI, 1.28-6.73), compared with athletes who played at the youth or high school level.

Age at first exposure to football was not associated with a parkinsonism/PD diagnosis.

The researchers cautioned that this was a convenience sample of mostly White people, and the sample was enriched for having PD – factors that limit the generalizability of the findings.

Also, diagnosis of PD was self-reported by participants through online assessments, and objective in-person evaluations were not conducted.
 

Unequivocal link?

“This is among the first and largest to look at the relationship between football and having a diagnosis of PD in a large cohort of people from the Fox Insight online study,” Dr. Alosco said.

He cautioned that “not all people who play football will develop later-life neurological problems. That being said, the study adds to the accumulating evidence that suggests playing football is one risk factor for the development of later-life brain diseases.

“This represents an opportunity to educate the communities on the potential risks of playing football (short and long term), including what we know and what we don’t know, so that people can make informed decisions on participating in tackle football and develop additional ways to mitigate risk,” Dr. Alosco said.

In a comment, Shaheen Lakhan, MD, PhD, a neurologist and researcher from Boston, said: “The emerging body of research leaves little doubt that engaging in football raises the risk of developing Parkinson’s disease and parkinsonism.

“This progressive line of investigation serves to enhance our understanding, unequivocally demonstrating that even participation in amateur football, including at the youth and high school levels, constitutes a significant risk factor for the onset of Parkinson’s disease,” said Dr. Lakhan, who was not involved in the study.

However, he said it’s “crucial to underscore that the statistics reveal a notable distinction: individuals who have a history of college or professional football play face odds nearly three times higher of receiving a diagnosis of parkinsonism or Parkinson’s disease when compared to their counterparts who engaged in football during their youth or high-school years.

“Ultimately, determinations regarding involvement in sports should be a collaborative endeavor involving parents, young athletes, and health care providers. It is incumbent upon physicians to equip parents and youth with a comprehensive comprehension of the potential risks and rewards inherent in football participation,” Dr. Lakhan said.

He added, though, that there are multifaceted advantages to playing football. “This pursuit nurtures cardiovascular well-being, fosters invaluable social interactions, cultivates teamwork, instills discipline through regimented routines, and hones a spectrum of physical proficiencies,” Dr. Lakhan said.

“It’s worth noting that a constellation of alternative sports, including track and field, swimming, soccer, baseball, and tennis, can be cogently discussed as substitutes, all while preserving the manifold benefits of athletic engagement,” Dr. Lakhan added.

The Fox Insight Study is funded by the Michael J. Fox Foundation for Parkinson’s Research. The study was conducted in collaboration with the Michael J. Fox Foundation for Parkinson’s Research, the sponsor of the Fox Insight study, which collected and aggregated data used in the study. It was also supported by the National Institute of Neurological Disorders and Stroke. Dr. Alosco received grants from the National Institutes of Health during the conduct of the study, an honorarium from the Michael J. Fox Foundation for work unrelated to the study, and royalties from Oxford University Press outside the submitted work. Dr. Lakhan disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

New research suggests a potential link between playing tackle football and an increased risk of developing parkinsonism or Parkinson’s disease (PD).

In a cross-sectional study of older men, former tackle football players had a 61% higher likelihood of reporting a diagnosis of parkinsonism or PD, compared with men who played non-football sports.

solar22/Thinkstock

Longer duration of football participation and higher level of play (college and professional) were associated with higher risk.

Lead researcher Michael L. Alosco, PhD, director of the Boston University Alzheimer’s Disease Research Center, said it’s important to note that the findings are from a cohort of men “enriched” for having PD.

“These are people who are likely already concerned for or at risk for having this disease. We don’t yet know how our findings translate to the general population,” Dr. Alosco said in an interview.

The study was published online in JAMA Network Open.
 

Repetitive head impacts

Dating back to the 1920s, PD and parkinsonism an umbrella term that refers to motor symptoms associated with PD and other conditions have long been described in boxers who suffer repetitive head impacts.

Multiple studies have linked tackle football with progressive brain diseases such as chronic traumatic encephalopathy. Few studies, however, have investigated the association between participation in football and PD.

For their study, Dr. Alosco and colleagues leveraged data from Fox Insight, a longitudinal online study of some people with and some without PD that is sponsored by the Michael J. Fox Foundation for Parkinson’s Research.

They focused their analyses on 1,875 men (mean age, 67 years) who reported playing any organized sport. As noted, the cohort was enriched for parkinsonism or PD. A total of 1,602 (85%) had received a diagnosis of parkinsonism/PD, and 273 had not.

Altogether, 729 men had a history of playing tackle football, and 1,146 men played non-football sports (control group). Among the football players, 82% played at youth sports or at the high school level; 17% played at the college level; and fewer than 1% played at the pro or semi-pro level.

Among the football players, 648 (89%) reported a parkinsonism/PD diagnosis.

A history of playing football was associated with higher odds of reporting a parkinsonism/PD diagnosis (odds ratio, 1.61; 95% confidence interval, 1.19-2.17) after accounting for age, education level, history of diabetes and heart disease, body mass index (BMI), traumatic brain injury with loss of consciousness, and family history of PD.

Football players who had longer careers and who played at higher levels of competition were at increased risk of having parkinsonism or PD.

Playing one to four seasons yielded an OR of 1.39 (95% CI, 0.98-1.98). The OR was 2.18 (95% CI, 1.36-3.49) for playing five or more seasons.

Football players who competed at the college or professional level had nearly triple the odds of reporting a parkinsonism/PD diagnosis (OR, 2.93; 95% CI, 1.28-6.73), compared with athletes who played at the youth or high school level.

Age at first exposure to football was not associated with a parkinsonism/PD diagnosis.

The researchers cautioned that this was a convenience sample of mostly White people, and the sample was enriched for having PD – factors that limit the generalizability of the findings.

Also, diagnosis of PD was self-reported by participants through online assessments, and objective in-person evaluations were not conducted.
 

Unequivocal link?

“This is among the first and largest to look at the relationship between football and having a diagnosis of PD in a large cohort of people from the Fox Insight online study,” Dr. Alosco said.

He cautioned that “not all people who play football will develop later-life neurological problems. That being said, the study adds to the accumulating evidence that suggests playing football is one risk factor for the development of later-life brain diseases.

“This represents an opportunity to educate the communities on the potential risks of playing football (short and long term), including what we know and what we don’t know, so that people can make informed decisions on participating in tackle football and develop additional ways to mitigate risk,” Dr. Alosco said.

In a comment, Shaheen Lakhan, MD, PhD, a neurologist and researcher from Boston, said: “The emerging body of research leaves little doubt that engaging in football raises the risk of developing Parkinson’s disease and parkinsonism.

“This progressive line of investigation serves to enhance our understanding, unequivocally demonstrating that even participation in amateur football, including at the youth and high school levels, constitutes a significant risk factor for the onset of Parkinson’s disease,” said Dr. Lakhan, who was not involved in the study.

However, he said it’s “crucial to underscore that the statistics reveal a notable distinction: individuals who have a history of college or professional football play face odds nearly three times higher of receiving a diagnosis of parkinsonism or Parkinson’s disease when compared to their counterparts who engaged in football during their youth or high-school years.

“Ultimately, determinations regarding involvement in sports should be a collaborative endeavor involving parents, young athletes, and health care providers. It is incumbent upon physicians to equip parents and youth with a comprehensive comprehension of the potential risks and rewards inherent in football participation,” Dr. Lakhan said.

He added, though, that there are multifaceted advantages to playing football. “This pursuit nurtures cardiovascular well-being, fosters invaluable social interactions, cultivates teamwork, instills discipline through regimented routines, and hones a spectrum of physical proficiencies,” Dr. Lakhan said.

“It’s worth noting that a constellation of alternative sports, including track and field, swimming, soccer, baseball, and tennis, can be cogently discussed as substitutes, all while preserving the manifold benefits of athletic engagement,” Dr. Lakhan added.

The Fox Insight Study is funded by the Michael J. Fox Foundation for Parkinson’s Research. The study was conducted in collaboration with the Michael J. Fox Foundation for Parkinson’s Research, the sponsor of the Fox Insight study, which collected and aggregated data used in the study. It was also supported by the National Institute of Neurological Disorders and Stroke. Dr. Alosco received grants from the National Institutes of Health during the conduct of the study, an honorarium from the Michael J. Fox Foundation for work unrelated to the study, and royalties from Oxford University Press outside the submitted work. Dr. Lakhan disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

New research suggests a potential link between playing tackle football and an increased risk of developing parkinsonism or Parkinson’s disease (PD).

In a cross-sectional study of older men, former tackle football players had a 61% higher likelihood of reporting a diagnosis of parkinsonism or PD, compared with men who played non-football sports.

solar22/Thinkstock

Longer duration of football participation and higher level of play (college and professional) were associated with higher risk.

Lead researcher Michael L. Alosco, PhD, director of the Boston University Alzheimer’s Disease Research Center, said it’s important to note that the findings are from a cohort of men “enriched” for having PD.

“These are people who are likely already concerned for or at risk for having this disease. We don’t yet know how our findings translate to the general population,” Dr. Alosco said in an interview.

The study was published online in JAMA Network Open.
 

Repetitive head impacts

Dating back to the 1920s, PD and parkinsonism an umbrella term that refers to motor symptoms associated with PD and other conditions have long been described in boxers who suffer repetitive head impacts.

Multiple studies have linked tackle football with progressive brain diseases such as chronic traumatic encephalopathy. Few studies, however, have investigated the association between participation in football and PD.

For their study, Dr. Alosco and colleagues leveraged data from Fox Insight, a longitudinal online study of some people with and some without PD that is sponsored by the Michael J. Fox Foundation for Parkinson’s Research.

They focused their analyses on 1,875 men (mean age, 67 years) who reported playing any organized sport. As noted, the cohort was enriched for parkinsonism or PD. A total of 1,602 (85%) had received a diagnosis of parkinsonism/PD, and 273 had not.

Altogether, 729 men had a history of playing tackle football, and 1,146 men played non-football sports (control group). Among the football players, 82% played at youth sports or at the high school level; 17% played at the college level; and fewer than 1% played at the pro or semi-pro level.

Among the football players, 648 (89%) reported a parkinsonism/PD diagnosis.

A history of playing football was associated with higher odds of reporting a parkinsonism/PD diagnosis (odds ratio, 1.61; 95% confidence interval, 1.19-2.17) after accounting for age, education level, history of diabetes and heart disease, body mass index (BMI), traumatic brain injury with loss of consciousness, and family history of PD.

Football players who had longer careers and who played at higher levels of competition were at increased risk of having parkinsonism or PD.

Playing one to four seasons yielded an OR of 1.39 (95% CI, 0.98-1.98). The OR was 2.18 (95% CI, 1.36-3.49) for playing five or more seasons.

Football players who competed at the college or professional level had nearly triple the odds of reporting a parkinsonism/PD diagnosis (OR, 2.93; 95% CI, 1.28-6.73), compared with athletes who played at the youth or high school level.

Age at first exposure to football was not associated with a parkinsonism/PD diagnosis.

The researchers cautioned that this was a convenience sample of mostly White people, and the sample was enriched for having PD – factors that limit the generalizability of the findings.

Also, diagnosis of PD was self-reported by participants through online assessments, and objective in-person evaluations were not conducted.
 

Unequivocal link?

“This is among the first and largest to look at the relationship between football and having a diagnosis of PD in a large cohort of people from the Fox Insight online study,” Dr. Alosco said.

He cautioned that “not all people who play football will develop later-life neurological problems. That being said, the study adds to the accumulating evidence that suggests playing football is one risk factor for the development of later-life brain diseases.

“This represents an opportunity to educate the communities on the potential risks of playing football (short and long term), including what we know and what we don’t know, so that people can make informed decisions on participating in tackle football and develop additional ways to mitigate risk,” Dr. Alosco said.

In a comment, Shaheen Lakhan, MD, PhD, a neurologist and researcher from Boston, said: “The emerging body of research leaves little doubt that engaging in football raises the risk of developing Parkinson’s disease and parkinsonism.

“This progressive line of investigation serves to enhance our understanding, unequivocally demonstrating that even participation in amateur football, including at the youth and high school levels, constitutes a significant risk factor for the onset of Parkinson’s disease,” said Dr. Lakhan, who was not involved in the study.

However, he said it’s “crucial to underscore that the statistics reveal a notable distinction: individuals who have a history of college or professional football play face odds nearly three times higher of receiving a diagnosis of parkinsonism or Parkinson’s disease when compared to their counterparts who engaged in football during their youth or high-school years.

“Ultimately, determinations regarding involvement in sports should be a collaborative endeavor involving parents, young athletes, and health care providers. It is incumbent upon physicians to equip parents and youth with a comprehensive comprehension of the potential risks and rewards inherent in football participation,” Dr. Lakhan said.

He added, though, that there are multifaceted advantages to playing football. “This pursuit nurtures cardiovascular well-being, fosters invaluable social interactions, cultivates teamwork, instills discipline through regimented routines, and hones a spectrum of physical proficiencies,” Dr. Lakhan said.

“It’s worth noting that a constellation of alternative sports, including track and field, swimming, soccer, baseball, and tennis, can be cogently discussed as substitutes, all while preserving the manifold benefits of athletic engagement,” Dr. Lakhan added.

The Fox Insight Study is funded by the Michael J. Fox Foundation for Parkinson’s Research. The study was conducted in collaboration with the Michael J. Fox Foundation for Parkinson’s Research, the sponsor of the Fox Insight study, which collected and aggregated data used in the study. It was also supported by the National Institute of Neurological Disorders and Stroke. Dr. Alosco received grants from the National Institutes of Health during the conduct of the study, an honorarium from the Michael J. Fox Foundation for work unrelated to the study, and royalties from Oxford University Press outside the submitted work. Dr. Lakhan disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

A large brain imaging study of adults with six different psychiatric illnesses shows that heterogeneity in regional gray matter volume deviations is a general feature of psychiatric illness, but that these regionally heterogeneous areas are often embedded within common functional circuits and networks.

The findings suggest that “targeting brain circuits, rather than specific brain regions, may be a more effective way of developing new treatments,” study investigator Ashlea Segal said in an email.

The findings also suggest that it’s “unlikely that a single cause or mechanism of a given disorder exists, and that a ‘one-size-fits-all’ approach to treatment is likely only appropriate for a small subset of individuals. In fact, one size doesn’t fit all. It probably doesn’t even fit most,” said Ms. Segal, a PhD candidate with the Turner Institute for Brain and Mental Health’s Neural Systems and Behaviour Lab at Monash University in Melbourne.

“Focusing on brain alterations at an individual level allows us to develop more personally tailored treatments,” Ms. Segal added.

Regional heterogeneity, the authors write, “thus offers a plausible explanation for the well-described clinical heterogeneity observed in psychiatric disorders, while circuit- and network-level aggregation of deviations is a putative neural substrate for phenotypic similarities between patients assigned the same diagnosis.”

The study was published online in Nature Neuroscience
 

Beyond group averages

For decades, researchers have mapped brain areas showing reduced gray matter volume (GMV) in people diagnosed with a variety of mental illnesses, but these maps have only been generated at the level of group averages, Ms. Segal explained.

“This means that we understand how the brains of people with, say, schizophrenia, differ from those without schizophrenia on average, but we can’t really say much about individual people,” Ms. Segal said.

For their study, the researchers used new statistical techniques developed by Andre Marquand, PhD, who co-led the project, to characterize the heterogeneity of GMV differences in 1,294 individuals diagnosed with one of six psychiatric conditions and 1,465 matched controls. Dr. Marquand is affiliated with the Donders Institute for Brain, Cognition, and Behavior in Nijmegen, the Netherlands.

These techniques “allow us to benchmark the size of over 1,000 different brain regions in any given person relative to what we should expect to see in the general population. In this way, we can identify, for any person, brain regions showing unusually small or large volumes, given that person’s age and sex,” Ms. Segal told this news organization.

The clinical sample included 202 individuals with autism spectrum disorder, 153 with attention-deficit/hyperactivity disorder (ADHD), 228 with bipolar disorder, 161 with major depressive disorder, 167 with obsessive-compulsive disorder, and 383 individuals with schizophrenia.

Confirming earlier findings, those with psychiatric illness showed more GMV deviations than healthy controls, the researchers found.

However, at the individual level, deviations from population expectations for regional gray matter volumes were “highly heterogeneous,” affecting the same area in less than 7% of people with the same diagnosis, they note. “This result means that it is difficult to pinpoint treatment targets or causal mechanisms by focusing on group averages alone,” Alex Fornito, PhD, of Monash University, who led the research team, said in a statement.

“It may also explain why people with the same diagnosis show wide variability in their symptom profiles and treatment outcomes,” Dr. Fornito added.

Yet, despite considerable heterogeneity at the regional level across different diagnoses, these deviations were embedded within common functional circuits and networks in up to 56% of cases. 

The salience-ventral attention network, for example, which plays a central role in cognitive control, interoceptive awareness, and switching between internally and externally focused attention, was implicated across diagnoses, with other neural networks selectively involved in depression, bipolar disorder, schizophrenia, and ADHD.

The researchers say the approach they developed opens new opportunities for mapping brain changes in mental illness.

“The framework we have developed allows us to understand the diversity of brain changes in people with mental illness at different levels, from individual regions through to more widespread brain circuits and networks, offering a deeper insight into how the brain is affected in individual people,” Dr. Fornito said in a statement.

The study had no commercial funding. Ms. Segal, Dr. Fornito, and Dr. Marquand report no relevant financial relationships.

A version of this article first appeared on Medscape.com.

A large brain imaging study of adults with six different psychiatric illnesses shows that heterogeneity in regional gray matter volume deviations is a general feature of psychiatric illness, but that these regionally heterogeneous areas are often embedded within common functional circuits and networks.

The findings suggest that “targeting brain circuits, rather than specific brain regions, may be a more effective way of developing new treatments,” study investigator Ashlea Segal said in an email.

The findings also suggest that it’s “unlikely that a single cause or mechanism of a given disorder exists, and that a ‘one-size-fits-all’ approach to treatment is likely only appropriate for a small subset of individuals. In fact, one size doesn’t fit all. It probably doesn’t even fit most,” said Ms. Segal, a PhD candidate with the Turner Institute for Brain and Mental Health’s Neural Systems and Behaviour Lab at Monash University in Melbourne.

“Focusing on brain alterations at an individual level allows us to develop more personally tailored treatments,” Ms. Segal added.

Regional heterogeneity, the authors write, “thus offers a plausible explanation for the well-described clinical heterogeneity observed in psychiatric disorders, while circuit- and network-level aggregation of deviations is a putative neural substrate for phenotypic similarities between patients assigned the same diagnosis.”

The study was published online in Nature Neuroscience
 

Beyond group averages

For decades, researchers have mapped brain areas showing reduced gray matter volume (GMV) in people diagnosed with a variety of mental illnesses, but these maps have only been generated at the level of group averages, Ms. Segal explained.

“This means that we understand how the brains of people with, say, schizophrenia, differ from those without schizophrenia on average, but we can’t really say much about individual people,” Ms. Segal said.

For their study, the researchers used new statistical techniques developed by Andre Marquand, PhD, who co-led the project, to characterize the heterogeneity of GMV differences in 1,294 individuals diagnosed with one of six psychiatric conditions and 1,465 matched controls. Dr. Marquand is affiliated with the Donders Institute for Brain, Cognition, and Behavior in Nijmegen, the Netherlands.

These techniques “allow us to benchmark the size of over 1,000 different brain regions in any given person relative to what we should expect to see in the general population. In this way, we can identify, for any person, brain regions showing unusually small or large volumes, given that person’s age and sex,” Ms. Segal told this news organization.

The clinical sample included 202 individuals with autism spectrum disorder, 153 with attention-deficit/hyperactivity disorder (ADHD), 228 with bipolar disorder, 161 with major depressive disorder, 167 with obsessive-compulsive disorder, and 383 individuals with schizophrenia.

Confirming earlier findings, those with psychiatric illness showed more GMV deviations than healthy controls, the researchers found.

However, at the individual level, deviations from population expectations for regional gray matter volumes were “highly heterogeneous,” affecting the same area in less than 7% of people with the same diagnosis, they note. “This result means that it is difficult to pinpoint treatment targets or causal mechanisms by focusing on group averages alone,” Alex Fornito, PhD, of Monash University, who led the research team, said in a statement.

“It may also explain why people with the same diagnosis show wide variability in their symptom profiles and treatment outcomes,” Dr. Fornito added.

Yet, despite considerable heterogeneity at the regional level across different diagnoses, these deviations were embedded within common functional circuits and networks in up to 56% of cases. 

The salience-ventral attention network, for example, which plays a central role in cognitive control, interoceptive awareness, and switching between internally and externally focused attention, was implicated across diagnoses, with other neural networks selectively involved in depression, bipolar disorder, schizophrenia, and ADHD.

The researchers say the approach they developed opens new opportunities for mapping brain changes in mental illness.

“The framework we have developed allows us to understand the diversity of brain changes in people with mental illness at different levels, from individual regions through to more widespread brain circuits and networks, offering a deeper insight into how the brain is affected in individual people,” Dr. Fornito said in a statement.

The study had no commercial funding. Ms. Segal, Dr. Fornito, and Dr. Marquand report no relevant financial relationships.

A version of this article first appeared on Medscape.com.

A large brain imaging study of adults with six different psychiatric illnesses shows that heterogeneity in regional gray matter volume deviations is a general feature of psychiatric illness, but that these regionally heterogeneous areas are often embedded within common functional circuits and networks.

The findings suggest that “targeting brain circuits, rather than specific brain regions, may be a more effective way of developing new treatments,” study investigator Ashlea Segal said in an email.

The findings also suggest that it’s “unlikely that a single cause or mechanism of a given disorder exists, and that a ‘one-size-fits-all’ approach to treatment is likely only appropriate for a small subset of individuals. In fact, one size doesn’t fit all. It probably doesn’t even fit most,” said Ms. Segal, a PhD candidate with the Turner Institute for Brain and Mental Health’s Neural Systems and Behaviour Lab at Monash University in Melbourne.

“Focusing on brain alterations at an individual level allows us to develop more personally tailored treatments,” Ms. Segal added.

Regional heterogeneity, the authors write, “thus offers a plausible explanation for the well-described clinical heterogeneity observed in psychiatric disorders, while circuit- and network-level aggregation of deviations is a putative neural substrate for phenotypic similarities between patients assigned the same diagnosis.”

The study was published online in Nature Neuroscience
 

Beyond group averages

For decades, researchers have mapped brain areas showing reduced gray matter volume (GMV) in people diagnosed with a variety of mental illnesses, but these maps have only been generated at the level of group averages, Ms. Segal explained.

“This means that we understand how the brains of people with, say, schizophrenia, differ from those without schizophrenia on average, but we can’t really say much about individual people,” Ms. Segal said.

For their study, the researchers used new statistical techniques developed by Andre Marquand, PhD, who co-led the project, to characterize the heterogeneity of GMV differences in 1,294 individuals diagnosed with one of six psychiatric conditions and 1,465 matched controls. Dr. Marquand is affiliated with the Donders Institute for Brain, Cognition, and Behavior in Nijmegen, the Netherlands.

These techniques “allow us to benchmark the size of over 1,000 different brain regions in any given person relative to what we should expect to see in the general population. In this way, we can identify, for any person, brain regions showing unusually small or large volumes, given that person’s age and sex,” Ms. Segal told this news organization.

The clinical sample included 202 individuals with autism spectrum disorder, 153 with attention-deficit/hyperactivity disorder (ADHD), 228 with bipolar disorder, 161 with major depressive disorder, 167 with obsessive-compulsive disorder, and 383 individuals with schizophrenia.

Confirming earlier findings, those with psychiatric illness showed more GMV deviations than healthy controls, the researchers found.

However, at the individual level, deviations from population expectations for regional gray matter volumes were “highly heterogeneous,” affecting the same area in less than 7% of people with the same diagnosis, they note. “This result means that it is difficult to pinpoint treatment targets or causal mechanisms by focusing on group averages alone,” Alex Fornito, PhD, of Monash University, who led the research team, said in a statement.

“It may also explain why people with the same diagnosis show wide variability in their symptom profiles and treatment outcomes,” Dr. Fornito added.

Yet, despite considerable heterogeneity at the regional level across different diagnoses, these deviations were embedded within common functional circuits and networks in up to 56% of cases. 

The salience-ventral attention network, for example, which plays a central role in cognitive control, interoceptive awareness, and switching between internally and externally focused attention, was implicated across diagnoses, with other neural networks selectively involved in depression, bipolar disorder, schizophrenia, and ADHD.

The researchers say the approach they developed opens new opportunities for mapping brain changes in mental illness.

“The framework we have developed allows us to understand the diversity of brain changes in people with mental illness at different levels, from individual regions through to more widespread brain circuits and networks, offering a deeper insight into how the brain is affected in individual people,” Dr. Fornito said in a statement.

The study had no commercial funding. Ms. Segal, Dr. Fornito, and Dr. Marquand report no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Even at an advanced age, superagers have the memory of someone 20 or 30 years their junior. But why is that? A new study shows that, in superagers, age-related atrophy of the gray matter, especially in the areas responsible for memory, develops much more slowly than in normal older adults. However, the study also emphasizes the importance of physical and mental fitness for a healthy aging process.

“One of the most important unanswered questions with regard to superagers is: ‘Are they resistant to age-related memory loss, or do they have coping mechanisms that allow them to better offset this memory loss?’ ” wrote Marta Garo-Pascual, a PhD candidate at the Autonomous University of Madrid, Spain, and colleagues in the Lancet Healthy Longevity. “Our results indicate that superagers are resistant to these processes.”
 

Six years’ monitoring

From a cohort of older adults who had participated in a study aiming to identify early indicators of Alzheimer’s disease, the research group chose 64 superagers and 55 normal senior citizens. The latter served as the control group. While the superagers performed just as well in a memory test as people 30 years their junior, the control group’s performance was in line with their age and level of education.

All study participants were over age 79 years. Both the group of superagers and the control group included more females than males. On average, they were monitored for 6 years. During this period, a checkup was scheduled annually with an MRI examination, clinical tests, blood tests, and documentation of lifestyle factors.

For Alessandro Cellerino, PhD, of the Leibniz Institute on Aging–Fritz Lipmann Institute in Jena, Germany, this is the most crucial aspect of the study. “Even before this study, we knew that superagers demonstrated less atrophy in certain areas of the brain, but this was always only ever based on a single measurement.”
 

Memory centers protected

The MRI examinations confirmed that in superagers, gray matter atrophy in the regions responsible for memory (such as the medial temporal lobe and cholinergic forebrain), as well in regions important for movement (such as the motor thalamus), was less pronounced. In addition, the volume of gray matter in these regions, especially in the medial temporal lobe, decreased much more slowly in the superagers than in the control subjects over the study period.

Ms. Garo-Pascual and associates used a machine-learning algorithm to differentiate between superagers and normal older adults. From the 89 demographic, lifestyle, and clinical factors entered into the algorithm, two were the most important for the classification: the ability to move and mental health.
 

Mobility and mental health

Clinical tests such as the Timed Up-and-Go Test and the Finger Tapping Test revealed that superagers can be distinguished from the normally aging control subjects with regard to their mobility and fine motor skills. Their physical condition was better, although they, by their own admission, did not move any more than the control subjects in day-to-day life. According to Dr. Cellerino, this finding confirms that physical activity is paramount for cognitive function. “These people were over 80 years old – the fact that there was not much difference between their levels of activity is not surprising. Much more relevant is the question of how you get there – i.e., how active you are at the ages of 40, 50 or even 60 years old.”

Remaining active is important

As a matter of fact, the superagers indicated that generally they had been more active than the control subjects during their middle years. “Attempting to stay physically fit is essential; even if it just means going for a walk or taking the stairs,” said Dr. Cellerino.

On average, the superagers also fared much better in tests on physical health than the control subjects. They suffered significantly less from depression or anxiety disorders. “Earlier studies suggest that depression and anxiety disorders may influence performance in memory tests across all ages and that they are risk factors for developing dementia,” said Dr. Cellerino.

To avoid mental health issues in later life, gerontologist Dr. Cellerino recommended remaining socially engaged and involved. “Depression and anxiety are commonly also a consequence of social isolation,” he said.
 

Potential genetic differences

Blood sample analyses demonstrated that the superagers exhibited lower concentrations of biomarkers for neurodegenerative diseases than the control group did. In contrast, there was no difference between the two groups in the prevalence of the apo e4 allele, one of the most important genetic risk factors for Alzheimer’s disease. Nevertheless, Ms. Garo-Pascual and associates assume that genetics also play a role. They found that, despite 89 variables employed, the algorithm used could only distinguish superagers from normal older adults 66% of the time. This suggests that additional factors must be in play, such as genetic differences.

Body and mind

Since this is an observational study, whether the determined factors have a direct effect on superaging cannot be ascertained, the authors wrote. However, the results are consistent with earlier findings.

“Regarding the management of old age, we actually haven’t learned anything more than what we already knew. But it does confirm that physical and mental function are closely entwined and that we must maintain both to age healthily,” Dr. Cellerino concluded.

This article was translated from the Medscape German Edition. A version appeared on Medscape.com.

Even at an advanced age, superagers have the memory of someone 20 or 30 years their junior. But why is that? A new study shows that, in superagers, age-related atrophy of the gray matter, especially in the areas responsible for memory, develops much more slowly than in normal older adults. However, the study also emphasizes the importance of physical and mental fitness for a healthy aging process.

“One of the most important unanswered questions with regard to superagers is: ‘Are they resistant to age-related memory loss, or do they have coping mechanisms that allow them to better offset this memory loss?’ ” wrote Marta Garo-Pascual, a PhD candidate at the Autonomous University of Madrid, Spain, and colleagues in the Lancet Healthy Longevity. “Our results indicate that superagers are resistant to these processes.”
 

Six years’ monitoring

From a cohort of older adults who had participated in a study aiming to identify early indicators of Alzheimer’s disease, the research group chose 64 superagers and 55 normal senior citizens. The latter served as the control group. While the superagers performed just as well in a memory test as people 30 years their junior, the control group’s performance was in line with their age and level of education.

All study participants were over age 79 years. Both the group of superagers and the control group included more females than males. On average, they were monitored for 6 years. During this period, a checkup was scheduled annually with an MRI examination, clinical tests, blood tests, and documentation of lifestyle factors.

For Alessandro Cellerino, PhD, of the Leibniz Institute on Aging–Fritz Lipmann Institute in Jena, Germany, this is the most crucial aspect of the study. “Even before this study, we knew that superagers demonstrated less atrophy in certain areas of the brain, but this was always only ever based on a single measurement.”
 

Memory centers protected

The MRI examinations confirmed that in superagers, gray matter atrophy in the regions responsible for memory (such as the medial temporal lobe and cholinergic forebrain), as well in regions important for movement (such as the motor thalamus), was less pronounced. In addition, the volume of gray matter in these regions, especially in the medial temporal lobe, decreased much more slowly in the superagers than in the control subjects over the study period.

Ms. Garo-Pascual and associates used a machine-learning algorithm to differentiate between superagers and normal older adults. From the 89 demographic, lifestyle, and clinical factors entered into the algorithm, two were the most important for the classification: the ability to move and mental health.
 

Mobility and mental health

Clinical tests such as the Timed Up-and-Go Test and the Finger Tapping Test revealed that superagers can be distinguished from the normally aging control subjects with regard to their mobility and fine motor skills. Their physical condition was better, although they, by their own admission, did not move any more than the control subjects in day-to-day life. According to Dr. Cellerino, this finding confirms that physical activity is paramount for cognitive function. “These people were over 80 years old – the fact that there was not much difference between their levels of activity is not surprising. Much more relevant is the question of how you get there – i.e., how active you are at the ages of 40, 50 or even 60 years old.”

Remaining active is important

As a matter of fact, the superagers indicated that generally they had been more active than the control subjects during their middle years. “Attempting to stay physically fit is essential; even if it just means going for a walk or taking the stairs,” said Dr. Cellerino.

On average, the superagers also fared much better in tests on physical health than the control subjects. They suffered significantly less from depression or anxiety disorders. “Earlier studies suggest that depression and anxiety disorders may influence performance in memory tests across all ages and that they are risk factors for developing dementia,” said Dr. Cellerino.

To avoid mental health issues in later life, gerontologist Dr. Cellerino recommended remaining socially engaged and involved. “Depression and anxiety are commonly also a consequence of social isolation,” he said.
 

Potential genetic differences

Blood sample analyses demonstrated that the superagers exhibited lower concentrations of biomarkers for neurodegenerative diseases than the control group did. In contrast, there was no difference between the two groups in the prevalence of the apo e4 allele, one of the most important genetic risk factors for Alzheimer’s disease. Nevertheless, Ms. Garo-Pascual and associates assume that genetics also play a role. They found that, despite 89 variables employed, the algorithm used could only distinguish superagers from normal older adults 66% of the time. This suggests that additional factors must be in play, such as genetic differences.

Body and mind

Since this is an observational study, whether the determined factors have a direct effect on superaging cannot be ascertained, the authors wrote. However, the results are consistent with earlier findings.

“Regarding the management of old age, we actually haven’t learned anything more than what we already knew. But it does confirm that physical and mental function are closely entwined and that we must maintain both to age healthily,” Dr. Cellerino concluded.

This article was translated from the Medscape German Edition. A version appeared on Medscape.com.

Even at an advanced age, superagers have the memory of someone 20 or 30 years their junior. But why is that? A new study shows that, in superagers, age-related atrophy of the gray matter, especially in the areas responsible for memory, develops much more slowly than in normal older adults. However, the study also emphasizes the importance of physical and mental fitness for a healthy aging process.

“One of the most important unanswered questions with regard to superagers is: ‘Are they resistant to age-related memory loss, or do they have coping mechanisms that allow them to better offset this memory loss?’ ” wrote Marta Garo-Pascual, a PhD candidate at the Autonomous University of Madrid, Spain, and colleagues in the Lancet Healthy Longevity. “Our results indicate that superagers are resistant to these processes.”
 

Six years’ monitoring

From a cohort of older adults who had participated in a study aiming to identify early indicators of Alzheimer’s disease, the research group chose 64 superagers and 55 normal senior citizens. The latter served as the control group. While the superagers performed just as well in a memory test as people 30 years their junior, the control group’s performance was in line with their age and level of education.

All study participants were over age 79 years. Both the group of superagers and the control group included more females than males. On average, they were monitored for 6 years. During this period, a checkup was scheduled annually with an MRI examination, clinical tests, blood tests, and documentation of lifestyle factors.

For Alessandro Cellerino, PhD, of the Leibniz Institute on Aging–Fritz Lipmann Institute in Jena, Germany, this is the most crucial aspect of the study. “Even before this study, we knew that superagers demonstrated less atrophy in certain areas of the brain, but this was always only ever based on a single measurement.”
 

Memory centers protected

The MRI examinations confirmed that in superagers, gray matter atrophy in the regions responsible for memory (such as the medial temporal lobe and cholinergic forebrain), as well in regions important for movement (such as the motor thalamus), was less pronounced. In addition, the volume of gray matter in these regions, especially in the medial temporal lobe, decreased much more slowly in the superagers than in the control subjects over the study period.

Ms. Garo-Pascual and associates used a machine-learning algorithm to differentiate between superagers and normal older adults. From the 89 demographic, lifestyle, and clinical factors entered into the algorithm, two were the most important for the classification: the ability to move and mental health.
 

Mobility and mental health

Clinical tests such as the Timed Up-and-Go Test and the Finger Tapping Test revealed that superagers can be distinguished from the normally aging control subjects with regard to their mobility and fine motor skills. Their physical condition was better, although they, by their own admission, did not move any more than the control subjects in day-to-day life. According to Dr. Cellerino, this finding confirms that physical activity is paramount for cognitive function. “These people were over 80 years old – the fact that there was not much difference between their levels of activity is not surprising. Much more relevant is the question of how you get there – i.e., how active you are at the ages of 40, 50 or even 60 years old.”

Remaining active is important

As a matter of fact, the superagers indicated that generally they had been more active than the control subjects during their middle years. “Attempting to stay physically fit is essential; even if it just means going for a walk or taking the stairs,” said Dr. Cellerino.

On average, the superagers also fared much better in tests on physical health than the control subjects. They suffered significantly less from depression or anxiety disorders. “Earlier studies suggest that depression and anxiety disorders may influence performance in memory tests across all ages and that they are risk factors for developing dementia,” said Dr. Cellerino.

To avoid mental health issues in later life, gerontologist Dr. Cellerino recommended remaining socially engaged and involved. “Depression and anxiety are commonly also a consequence of social isolation,” he said.
 

Potential genetic differences

Blood sample analyses demonstrated that the superagers exhibited lower concentrations of biomarkers for neurodegenerative diseases than the control group did. In contrast, there was no difference between the two groups in the prevalence of the apo e4 allele, one of the most important genetic risk factors for Alzheimer’s disease. Nevertheless, Ms. Garo-Pascual and associates assume that genetics also play a role. They found that, despite 89 variables employed, the algorithm used could only distinguish superagers from normal older adults 66% of the time. This suggests that additional factors must be in play, such as genetic differences.

Body and mind

Since this is an observational study, whether the determined factors have a direct effect on superaging cannot be ascertained, the authors wrote. However, the results are consistent with earlier findings.

“Regarding the management of old age, we actually haven’t learned anything more than what we already knew. But it does confirm that physical and mental function are closely entwined and that we must maintain both to age healthily,” Dr. Cellerino concluded.

This article was translated from the Medscape German Edition. A version appeared on Medscape.com.

Several signs are pointing to an impending surge in the number of human cases of West Nile virus in several regions of the United States.

West Nile virus is spread by infected mosquitoes and currently there is no cure or virus-specific treatment. In rare cases, it can be deadly. It can infect humans, birds, horses, and other mammals.

West Nile Virus is the leading cause of mosquito-borne disease in the continental United States. As of Aug. 8, 126 human cases had been identified across 22 states, according to the Centers for Disease Control and Prevention.

“Particularly here in California, it’s peak risk right now,” said Vicki Kramer, PhD, chief of vector-borne diseases in the California Department of Public Health. She said scientists there are seeing higher mosquito and infected mosquito numbers.
 

“Peak risk right now”

Dead birds are tested for the virus and by Aug. 4, 181 of the 913 birds tested in California have been positive, three times the total testing positive by this time in 2022.

“Last year at this time, we had 60 positive dead birds out of 817 tested,” Dr. Kramer said.

Severe flooding and high heat can contribute to the rise in mosquito populations and many parts of the country have seen plenty of both.

One of the ways scientists track infected mosquito patterns in California is by using flocks of strategically placed sentinel chickens.

“Chickens are a mosquito magnet,” Dr. Kramer said.

Chickens don’t get sick with the virus, but they do build antibodies to it. Surveillance teams check their blood every other week to track the virus.

Daniel Pastula, MD, MHS, chief of neuroinfectious diseases and global neurology at the University of Colorado School of Medicine and the Colorado School of Public Health, said the state is watching troubling signs as well.

“The concern this year,” Dr. Pastula said, “particularly along the Front Range in Colorado, is we’ve found many more mosquitoes [that are] positive for West Nile earlier in the season compared with other years.

“We’re bracing for higher-than-baseline human cases,” he said.

Asked about this year’s first human case, reported in Toronto, a region with a long winter and low incidence of the virus, he said that provides a further example that people need to be prepared even in climates not known to be mosquito-dense.

He added, however, that climate is only one factor in the severity of the season. Others include birds’ immunity and migratory patterns.

Dr. Pastula said that fluctuations in temperature and rainfall are rising with climate change and are disrupting normal baseline levels of West Nile.

“That shows we need to be prepared for West Nile virus and other mosquito-borne diseases in any place in North America or really the world. We recently saw malaria cases in the southern United States. It just shows you how dangerous mosquitoes can be.”
 

Avoid mosquito bites

Dr. Pastula and Dr. Kramer list the precautions people can take to protect themselves from West Nile virus:

• Limit outdoor exposure particularly at dusk and dawn.
• Wear protective clothing.
• Use .
• Repair window screens so mosquitoes cannot fly through.
• Dump and drain standing water on your property and maintain swimming pools.

Dr. Pastula noted that summer is the time human cases start to mount – typically from July and August to the first hard freeze.

“We have been warning people here up and down the Front Range of Colorado to take prevention very seriously,” Dr. Pastula said.

He pointed out that 80% who are infected with West Nile will have no symptoms.

About 20% will have flu-like illness – high fever, body and joint aches, rash, diarrhea, or headaches. Symptoms may last for weeks. About 1% of the time, he said, people can get neuroinvasive West Nile.

Dr. Pastula explained that the virus can infect the covering of the brain and spinal cord causing meningitis with very high fever, severe headaches, stiff neck, and sensitivity to light.

So far this year, there have been 89 neuroinvasive cases reported nationally, according to the CDC.

With West Nile encephalitis, the virus “can infect the brain itself causing altered mental status, movement disorders, or weakness,” Dr. Pastula said.

Sometimes it can infect the gray matter of the spinal cord causing a West Nile virus poliomyelitis, which brings polio-like symptoms.

“The West Nile encephalitis and poliomyelitis can cause permanent deficits or even death,” he said. “It’s uncommon but it’s not trivial.”

Several vaccine candidates are in development, Dr. Pastula said, but none has reached clinical trials. Part of the reason for that, he said, is that scientists must be able to predict the timing of an outbreak.

“We’re not really great at predicting outbreaks,” he said.

Although the risk for neuroinvasive disease is small, it can be higher in certain groups, he said – those who are over age 60 years or are immunocompromised; those who have diabetes, cancer, or kidney disease; or those who have undergone organ transplants.

Those infected should see a health care professional and may be able to get relief with the usual medications for flu-like illness.

Some with severe infection may need to go to the hospital, Dr. Pastula said.
 

A version of this article first appeared on Medscape.com.

Several signs are pointing to an impending surge in the number of human cases of West Nile virus in several regions of the United States.

West Nile virus is spread by infected mosquitoes and currently there is no cure or virus-specific treatment. In rare cases, it can be deadly. It can infect humans, birds, horses, and other mammals.

West Nile Virus is the leading cause of mosquito-borne disease in the continental United States. As of Aug. 8, 126 human cases had been identified across 22 states, according to the Centers for Disease Control and Prevention.

“Particularly here in California, it’s peak risk right now,” said Vicki Kramer, PhD, chief of vector-borne diseases in the California Department of Public Health. She said scientists there are seeing higher mosquito and infected mosquito numbers.
 

“Peak risk right now”

Dead birds are tested for the virus and by Aug. 4, 181 of the 913 birds tested in California have been positive, three times the total testing positive by this time in 2022.

“Last year at this time, we had 60 positive dead birds out of 817 tested,” Dr. Kramer said.

Severe flooding and high heat can contribute to the rise in mosquito populations and many parts of the country have seen plenty of both.

One of the ways scientists track infected mosquito patterns in California is by using flocks of strategically placed sentinel chickens.

“Chickens are a mosquito magnet,” Dr. Kramer said.

Chickens don’t get sick with the virus, but they do build antibodies to it. Surveillance teams check their blood every other week to track the virus.

Daniel Pastula, MD, MHS, chief of neuroinfectious diseases and global neurology at the University of Colorado School of Medicine and the Colorado School of Public Health, said the state is watching troubling signs as well.

“The concern this year,” Dr. Pastula said, “particularly along the Front Range in Colorado, is we’ve found many more mosquitoes [that are] positive for West Nile earlier in the season compared with other years.

“We’re bracing for higher-than-baseline human cases,” he said.

Asked about this year’s first human case, reported in Toronto, a region with a long winter and low incidence of the virus, he said that provides a further example that people need to be prepared even in climates not known to be mosquito-dense.

He added, however, that climate is only one factor in the severity of the season. Others include birds’ immunity and migratory patterns.

Dr. Pastula said that fluctuations in temperature and rainfall are rising with climate change and are disrupting normal baseline levels of West Nile.

“That shows we need to be prepared for West Nile virus and other mosquito-borne diseases in any place in North America or really the world. We recently saw malaria cases in the southern United States. It just shows you how dangerous mosquitoes can be.”
 

Avoid mosquito bites

Dr. Pastula and Dr. Kramer list the precautions people can take to protect themselves from West Nile virus:

• Limit outdoor exposure particularly at dusk and dawn.
• Wear protective clothing.
• Use .
• Repair window screens so mosquitoes cannot fly through.
• Dump and drain standing water on your property and maintain swimming pools.

Dr. Pastula noted that summer is the time human cases start to mount – typically from July and August to the first hard freeze.

“We have been warning people here up and down the Front Range of Colorado to take prevention very seriously,” Dr. Pastula said.

He pointed out that 80% who are infected with West Nile will have no symptoms.

About 20% will have flu-like illness – high fever, body and joint aches, rash, diarrhea, or headaches. Symptoms may last for weeks. About 1% of the time, he said, people can get neuroinvasive West Nile.

Dr. Pastula explained that the virus can infect the covering of the brain and spinal cord causing meningitis with very high fever, severe headaches, stiff neck, and sensitivity to light.

So far this year, there have been 89 neuroinvasive cases reported nationally, according to the CDC.

With West Nile encephalitis, the virus “can infect the brain itself causing altered mental status, movement disorders, or weakness,” Dr. Pastula said.

Sometimes it can infect the gray matter of the spinal cord causing a West Nile virus poliomyelitis, which brings polio-like symptoms.

“The West Nile encephalitis and poliomyelitis can cause permanent deficits or even death,” he said. “It’s uncommon but it’s not trivial.”

Several vaccine candidates are in development, Dr. Pastula said, but none has reached clinical trials. Part of the reason for that, he said, is that scientists must be able to predict the timing of an outbreak.

“We’re not really great at predicting outbreaks,” he said.

Although the risk for neuroinvasive disease is small, it can be higher in certain groups, he said – those who are over age 60 years or are immunocompromised; those who have diabetes, cancer, or kidney disease; or those who have undergone organ transplants.

Those infected should see a health care professional and may be able to get relief with the usual medications for flu-like illness.

Some with severe infection may need to go to the hospital, Dr. Pastula said.
 

A version of this article first appeared on Medscape.com.

Several signs are pointing to an impending surge in the number of human cases of West Nile virus in several regions of the United States.

West Nile virus is spread by infected mosquitoes and currently there is no cure or virus-specific treatment. In rare cases, it can be deadly. It can infect humans, birds, horses, and other mammals.

West Nile Virus is the leading cause of mosquito-borne disease in the continental United States. As of Aug. 8, 126 human cases had been identified across 22 states, according to the Centers for Disease Control and Prevention.

“Particularly here in California, it’s peak risk right now,” said Vicki Kramer, PhD, chief of vector-borne diseases in the California Department of Public Health. She said scientists there are seeing higher mosquito and infected mosquito numbers.
 

“Peak risk right now”

Dead birds are tested for the virus and by Aug. 4, 181 of the 913 birds tested in California have been positive, three times the total testing positive by this time in 2022.

“Last year at this time, we had 60 positive dead birds out of 817 tested,” Dr. Kramer said.

Severe flooding and high heat can contribute to the rise in mosquito populations and many parts of the country have seen plenty of both.

One of the ways scientists track infected mosquito patterns in California is by using flocks of strategically placed sentinel chickens.

“Chickens are a mosquito magnet,” Dr. Kramer said.

Chickens don’t get sick with the virus, but they do build antibodies to it. Surveillance teams check their blood every other week to track the virus.

Daniel Pastula, MD, MHS, chief of neuroinfectious diseases and global neurology at the University of Colorado School of Medicine and the Colorado School of Public Health, said the state is watching troubling signs as well.

“The concern this year,” Dr. Pastula said, “particularly along the Front Range in Colorado, is we’ve found many more mosquitoes [that are] positive for West Nile earlier in the season compared with other years.

“We’re bracing for higher-than-baseline human cases,” he said.

Asked about this year’s first human case, reported in Toronto, a region with a long winter and low incidence of the virus, he said that provides a further example that people need to be prepared even in climates not known to be mosquito-dense.

He added, however, that climate is only one factor in the severity of the season. Others include birds’ immunity and migratory patterns.

Dr. Pastula said that fluctuations in temperature and rainfall are rising with climate change and are disrupting normal baseline levels of West Nile.

“That shows we need to be prepared for West Nile virus and other mosquito-borne diseases in any place in North America or really the world. We recently saw malaria cases in the southern United States. It just shows you how dangerous mosquitoes can be.”
 

Avoid mosquito bites

Dr. Pastula and Dr. Kramer list the precautions people can take to protect themselves from West Nile virus:

• Limit outdoor exposure particularly at dusk and dawn.
• Wear protective clothing.
• Use .
• Repair window screens so mosquitoes cannot fly through.
• Dump and drain standing water on your property and maintain swimming pools.

Dr. Pastula noted that summer is the time human cases start to mount – typically from July and August to the first hard freeze.

“We have been warning people here up and down the Front Range of Colorado to take prevention very seriously,” Dr. Pastula said.

He pointed out that 80% who are infected with West Nile will have no symptoms.

About 20% will have flu-like illness – high fever, body and joint aches, rash, diarrhea, or headaches. Symptoms may last for weeks. About 1% of the time, he said, people can get neuroinvasive West Nile.

Dr. Pastula explained that the virus can infect the covering of the brain and spinal cord causing meningitis with very high fever, severe headaches, stiff neck, and sensitivity to light.

So far this year, there have been 89 neuroinvasive cases reported nationally, according to the CDC.

With West Nile encephalitis, the virus “can infect the brain itself causing altered mental status, movement disorders, or weakness,” Dr. Pastula said.

Sometimes it can infect the gray matter of the spinal cord causing a West Nile virus poliomyelitis, which brings polio-like symptoms.

“The West Nile encephalitis and poliomyelitis can cause permanent deficits or even death,” he said. “It’s uncommon but it’s not trivial.”

Several vaccine candidates are in development, Dr. Pastula said, but none has reached clinical trials. Part of the reason for that, he said, is that scientists must be able to predict the timing of an outbreak.

“We’re not really great at predicting outbreaks,” he said.

Although the risk for neuroinvasive disease is small, it can be higher in certain groups, he said – those who are over age 60 years or are immunocompromised; those who have diabetes, cancer, or kidney disease; or those who have undergone organ transplants.

Those infected should see a health care professional and may be able to get relief with the usual medications for flu-like illness.

Some with severe infection may need to go to the hospital, Dr. Pastula said.
 

A version of this article first appeared on Medscape.com.

Among military veterans who die by suicide, those who experience a traumatic brain injury (TBI) during service take their lives 21% sooner after deployment than those without a TBI history, a new study shows.

Investigators also found that increases in new mental health diagnoses are significantly higher in soldiers with a history of TBI – in some cases, strikingly higher. For example, cases of substance use disorder rose by 100% among veterans with TBI compared to just 14.5% in those with no brain injury.

Veterans Health Administration

“We had had pieces of these findings for a long time but to be able to lay out this longitudinal story over time is the part that’s new and important to really switch the focus to people’s whole lives and things that happen over time, both psychological and physical,” lead author Lisa Brenner, PhD, director of the Veterans Health Administration (VHA) Rocky Mountain Mental Illness Research Education and Clinical Center, Aurora, Colo., said in an interview.

“If we take that life-course view, it’s a very different way about thinking about conceptualizing exposures and conceptualizing risk and it’s a different way of thinking about treatment and prevention,” added Dr. Brenner, professor of physical medicine and rehabilitation, psychiatry, and neurology at the University of Colorado, Aurora. “I think that definitely applies to civilian populations.”

The findings were published online in JAMA Network Open.
 

Largest, longest study to date

Researchers have long suspected that TBI and a higher rate of new mental illness and a shorter time to suicide are all somehow linked. But this study examined all three components longitudinally, in what is thought to be the largest and longest study on the topic to date, including more than 860,000 people who were followed for up to a decade.

Investigators studied health data from the Substance Use and Psychological Injury Combat Study database on 860,892 U.S. Army soldiers who returned from deployment in Iraq or Afghanistan between 2008 and 2014 and were 18-24 years old at the end of that deployment. They then examined new mental health diagnoses and suicide trends over time.

Nearly 109,000 (12.6%) experienced a TBI during deployment, and 2,695 had died by suicide through the end of 2018.

New-onset diagnoses of anxiety, mood disorders, posttraumatic stress disorder, alcohol use, and substance use disorder (SUD) after deployment were all more common in soldiers who experienced PTSD while serving compared with those with no history of TBI.

There was a 67.7% increase in mood disorders in participants with TBI compared with a 37.5% increase in those without TBI. The increase in new cases of alcohol use disorder was also greater in the TBI group (a 31.9% increase vs. a 10.3% increase).

But the sharpest difference was the increase in substance use disorder among those with TBI, which rose 100% compared with a 14.5% increase in solders with no history of TBI.
 

Sharp differences in time to suicide

Death by suicide was only slightly more common in those with TBI compared with those without (0.4% vs. 0.3%, respectively). But those with a brain injury committed suicide 21.3% sooner than did those without a head injury, after the researchers controlled for sex, age, race, ethnicity, and fiscal year of return from deployment.

Time to suicide was faster in those with a TBI and two or more new mental health diagnoses and fastest among those with TBI and a new SUD diagnosis, who took their own lives 62.8% faster than did those without a TBI.

The findings offer an important message to medical professionals in many different specialties, Dr. Brenner said.

“Folks in mental health probably have a lot of patients who have brain injury in their practice, and they don’t know it and that’s an important thing to know,” she said, adding that “neurologists should screen for depression and other mental health conditions and make sure those people have evidence-based treatments for those mental health conditions while they’re addressing the TBI-related symptoms.”
 

Applicable to civilians?

“The complex interplay between TBI, its potential effects on mental health, and risk of suicide remains a vexing focus of ongoing investigations and academic inquiry,” Ross Zafonte, DO, president of Spaulding Rehabilitation Hospital Network and professor and chair of physical medicine and rehabilitation at Harvard Medical School, Boston, and colleagues, wrote in an accompanying editorial.

The study builds on earlier work, they added, and praised the study’s longitudinal design and large cohort as key to the findings. The data on increased rates of new-onset substance use disorder, which was also associated with a faster time to suicide in the TBI group, were of particular interest.

“In this work, Brenner and colleagues identified substance use disorder as a key factor in faster time to suicide for active-duty service members with a history of TBI compared with those without TBI and theorized that a multiple stress or exposure burden may enhance risk,” they wrote. “This theory is reasonable and has been postulated among individuals with medical sequelae linked to TBI.”

However, the authors caution against applying these findings in military veterans to civilians.

“While this work is critical in the military population, caution should be given to avoid direct generalization to other populations, such as athletes, for whom the linkage to suicidal ideation is less understood,” they wrote.

The study was funded by National Institute of Mental Health and Office of the Director at National Institutes of Health. Dr. Brenner has received personal fees from Wolters Kluwer, Rand, American Psychological Association, and Oxford University Press and serves as a consultant to sports leagues via her university affiliation. Dr. Zafonte reported receiving royalties from Springer/Demos; serving as a member of the editorial boards of Journal of Neurotrauma and Frontiers in Neurology and scientific advisory boards of Myomo, Nanodiagnostics, Onecare.ai, and Kisbee; and evaluating patients in the MGH Brain and Body-TRUST Program, which is funded by the National Football League Players Association.
 

A version of this article first appeared on Medscape.com.

Among military veterans who die by suicide, those who experience a traumatic brain injury (TBI) during service take their lives 21% sooner after deployment than those without a TBI history, a new study shows.

Investigators also found that increases in new mental health diagnoses are significantly higher in soldiers with a history of TBI – in some cases, strikingly higher. For example, cases of substance use disorder rose by 100% among veterans with TBI compared to just 14.5% in those with no brain injury.

Veterans Health Administration

“We had had pieces of these findings for a long time but to be able to lay out this longitudinal story over time is the part that’s new and important to really switch the focus to people’s whole lives and things that happen over time, both psychological and physical,” lead author Lisa Brenner, PhD, director of the Veterans Health Administration (VHA) Rocky Mountain Mental Illness Research Education and Clinical Center, Aurora, Colo., said in an interview.

“If we take that life-course view, it’s a very different way about thinking about conceptualizing exposures and conceptualizing risk and it’s a different way of thinking about treatment and prevention,” added Dr. Brenner, professor of physical medicine and rehabilitation, psychiatry, and neurology at the University of Colorado, Aurora. “I think that definitely applies to civilian populations.”

The findings were published online in JAMA Network Open.
 

Largest, longest study to date

Researchers have long suspected that TBI and a higher rate of new mental illness and a shorter time to suicide are all somehow linked. But this study examined all three components longitudinally, in what is thought to be the largest and longest study on the topic to date, including more than 860,000 people who were followed for up to a decade.

Investigators studied health data from the Substance Use and Psychological Injury Combat Study database on 860,892 U.S. Army soldiers who returned from deployment in Iraq or Afghanistan between 2008 and 2014 and were 18-24 years old at the end of that deployment. They then examined new mental health diagnoses and suicide trends over time.

Nearly 109,000 (12.6%) experienced a TBI during deployment, and 2,695 had died by suicide through the end of 2018.

New-onset diagnoses of anxiety, mood disorders, posttraumatic stress disorder, alcohol use, and substance use disorder (SUD) after deployment were all more common in soldiers who experienced PTSD while serving compared with those with no history of TBI.

There was a 67.7% increase in mood disorders in participants with TBI compared with a 37.5% increase in those without TBI. The increase in new cases of alcohol use disorder was also greater in the TBI group (a 31.9% increase vs. a 10.3% increase).

But the sharpest difference was the increase in substance use disorder among those with TBI, which rose 100% compared with a 14.5% increase in solders with no history of TBI.
 

Sharp differences in time to suicide

Death by suicide was only slightly more common in those with TBI compared with those without (0.4% vs. 0.3%, respectively). But those with a brain injury committed suicide 21.3% sooner than did those without a head injury, after the researchers controlled for sex, age, race, ethnicity, and fiscal year of return from deployment.

Time to suicide was faster in those with a TBI and two or more new mental health diagnoses and fastest among those with TBI and a new SUD diagnosis, who took their own lives 62.8% faster than did those without a TBI.

The findings offer an important message to medical professionals in many different specialties, Dr. Brenner said.

“Folks in mental health probably have a lot of patients who have brain injury in their practice, and they don’t know it and that’s an important thing to know,” she said, adding that “neurologists should screen for depression and other mental health conditions and make sure those people have evidence-based treatments for those mental health conditions while they’re addressing the TBI-related symptoms.”
 

Applicable to civilians?

“The complex interplay between TBI, its potential effects on mental health, and risk of suicide remains a vexing focus of ongoing investigations and academic inquiry,” Ross Zafonte, DO, president of Spaulding Rehabilitation Hospital Network and professor and chair of physical medicine and rehabilitation at Harvard Medical School, Boston, and colleagues, wrote in an accompanying editorial.

The study builds on earlier work, they added, and praised the study’s longitudinal design and large cohort as key to the findings. The data on increased rates of new-onset substance use disorder, which was also associated with a faster time to suicide in the TBI group, were of particular interest.

“In this work, Brenner and colleagues identified substance use disorder as a key factor in faster time to suicide for active-duty service members with a history of TBI compared with those without TBI and theorized that a multiple stress or exposure burden may enhance risk,” they wrote. “This theory is reasonable and has been postulated among individuals with medical sequelae linked to TBI.”

However, the authors caution against applying these findings in military veterans to civilians.

“While this work is critical in the military population, caution should be given to avoid direct generalization to other populations, such as athletes, for whom the linkage to suicidal ideation is less understood,” they wrote.

The study was funded by National Institute of Mental Health and Office of the Director at National Institutes of Health. Dr. Brenner has received personal fees from Wolters Kluwer, Rand, American Psychological Association, and Oxford University Press and serves as a consultant to sports leagues via her university affiliation. Dr. Zafonte reported receiving royalties from Springer/Demos; serving as a member of the editorial boards of Journal of Neurotrauma and Frontiers in Neurology and scientific advisory boards of Myomo, Nanodiagnostics, Onecare.ai, and Kisbee; and evaluating patients in the MGH Brain and Body-TRUST Program, which is funded by the National Football League Players Association.
 

A version of this article first appeared on Medscape.com.

Among military veterans who die by suicide, those who experience a traumatic brain injury (TBI) during service take their lives 21% sooner after deployment than those without a TBI history, a new study shows.

Investigators also found that increases in new mental health diagnoses are significantly higher in soldiers with a history of TBI – in some cases, strikingly higher. For example, cases of substance use disorder rose by 100% among veterans with TBI compared to just 14.5% in those with no brain injury.

Veterans Health Administration

“We had had pieces of these findings for a long time but to be able to lay out this longitudinal story over time is the part that’s new and important to really switch the focus to people’s whole lives and things that happen over time, both psychological and physical,” lead author Lisa Brenner, PhD, director of the Veterans Health Administration (VHA) Rocky Mountain Mental Illness Research Education and Clinical Center, Aurora, Colo., said in an interview.

“If we take that life-course view, it’s a very different way about thinking about conceptualizing exposures and conceptualizing risk and it’s a different way of thinking about treatment and prevention,” added Dr. Brenner, professor of physical medicine and rehabilitation, psychiatry, and neurology at the University of Colorado, Aurora. “I think that definitely applies to civilian populations.”

The findings were published online in JAMA Network Open.
 

Largest, longest study to date

Researchers have long suspected that TBI and a higher rate of new mental illness and a shorter time to suicide are all somehow linked. But this study examined all three components longitudinally, in what is thought to be the largest and longest study on the topic to date, including more than 860,000 people who were followed for up to a decade.

Investigators studied health data from the Substance Use and Psychological Injury Combat Study database on 860,892 U.S. Army soldiers who returned from deployment in Iraq or Afghanistan between 2008 and 2014 and were 18-24 years old at the end of that deployment. They then examined new mental health diagnoses and suicide trends over time.

Nearly 109,000 (12.6%) experienced a TBI during deployment, and 2,695 had died by suicide through the end of 2018.

New-onset diagnoses of anxiety, mood disorders, posttraumatic stress disorder, alcohol use, and substance use disorder (SUD) after deployment were all more common in soldiers who experienced PTSD while serving compared with those with no history of TBI.

There was a 67.7% increase in mood disorders in participants with TBI compared with a 37.5% increase in those without TBI. The increase in new cases of alcohol use disorder was also greater in the TBI group (a 31.9% increase vs. a 10.3% increase).

But the sharpest difference was the increase in substance use disorder among those with TBI, which rose 100% compared with a 14.5% increase in solders with no history of TBI.
 

Sharp differences in time to suicide

Death by suicide was only slightly more common in those with TBI compared with those without (0.4% vs. 0.3%, respectively). But those with a brain injury committed suicide 21.3% sooner than did those without a head injury, after the researchers controlled for sex, age, race, ethnicity, and fiscal year of return from deployment.

Time to suicide was faster in those with a TBI and two or more new mental health diagnoses and fastest among those with TBI and a new SUD diagnosis, who took their own lives 62.8% faster than did those without a TBI.

The findings offer an important message to medical professionals in many different specialties, Dr. Brenner said.

“Folks in mental health probably have a lot of patients who have brain injury in their practice, and they don’t know it and that’s an important thing to know,” she said, adding that “neurologists should screen for depression and other mental health conditions and make sure those people have evidence-based treatments for those mental health conditions while they’re addressing the TBI-related symptoms.”
 

Applicable to civilians?

“The complex interplay between TBI, its potential effects on mental health, and risk of suicide remains a vexing focus of ongoing investigations and academic inquiry,” Ross Zafonte, DO, president of Spaulding Rehabilitation Hospital Network and professor and chair of physical medicine and rehabilitation at Harvard Medical School, Boston, and colleagues, wrote in an accompanying editorial.

The study builds on earlier work, they added, and praised the study’s longitudinal design and large cohort as key to the findings. The data on increased rates of new-onset substance use disorder, which was also associated with a faster time to suicide in the TBI group, were of particular interest.

“In this work, Brenner and colleagues identified substance use disorder as a key factor in faster time to suicide for active-duty service members with a history of TBI compared with those without TBI and theorized that a multiple stress or exposure burden may enhance risk,” they wrote. “This theory is reasonable and has been postulated among individuals with medical sequelae linked to TBI.”

However, the authors caution against applying these findings in military veterans to civilians.

“While this work is critical in the military population, caution should be given to avoid direct generalization to other populations, such as athletes, for whom the linkage to suicidal ideation is less understood,” they wrote.

The study was funded by National Institute of Mental Health and Office of the Director at National Institutes of Health. Dr. Brenner has received personal fees from Wolters Kluwer, Rand, American Psychological Association, and Oxford University Press and serves as a consultant to sports leagues via her university affiliation. Dr. Zafonte reported receiving royalties from Springer/Demos; serving as a member of the editorial boards of Journal of Neurotrauma and Frontiers in Neurology and scientific advisory boards of Myomo, Nanodiagnostics, Onecare.ai, and Kisbee; and evaluating patients in the MGH Brain and Body-TRUST Program, which is funded by the National Football League Players Association.
 

A version of this article first appeared on Medscape.com.