MDedge Neurology

COPENHAGEN – Giving patients with Parkinson’s disease and constipation a probiotic for 3 months improved not only their gut microbiome but also nonmotor symptoms such as sleep, fatigue, and constipation, results of a new randomized trial show.

Participants taking the probiotic also saw a reduced delay in “time to on” of treatment with levodopa, thus reducing the delay until effectiveness of the treatment, said study presenter Valentina Leta, MD, PhD, department of neurosciences, King’s College London Institute of Psychiatry, Psychology and Neuroscience.

Dr. Leta presented the findings at the International Congress of Parkinson’s Disease and Movement Disorders.

“Virtually every person with Parkinson’s might have some degree of gastrointestinal dysfunction, and virtually the entire tract might be affected, from the mouth to the rectum,” Dr. Leta told attendees of the congress.

A number of different mechanisms have been associated with this gastrointestinal dysfunction, she noted, including proinflammatory changes in the gut microbiota, so a modulatory intervention “could be a therapeutic strategy for Parkinson’s disease.”

However, “despite numerous preclinical studies showing potential beneficial effects on a variety of pathological mechanisms involved in Parkinson’s disease, the clinical evidence is limited ... to the treatment of constipation,” she explained.

The team therefore conducted a multicenter, randomized, double-blind, placebo-controlled trial, in which patients with both Parkinson’s disease and constipation, based on the Rome IV criteria, were randomly assigned to receive a probiotic or placebo for 3 months.

The probiotic used was a liquid formulation (Symprove) and contained four strains: Lacticaseibacillus rhamnosus, Enterococcus faecium, Lactobacillus acidophilus, and Lactiplantibacillus plantarum.

A total of 74 patients were randomly assigned to the two study arms. The two groups were well matched for sociodemographics, Parkinson’s disease, and constipation-related characteristics, Dr. Leta reported, and only 3 patients in each arm discontinued the study. The probiotic intervention had a “good tolerability and safety profile, with a similar number of adverse events between the two groups, and no serious adverse events.”
 

Increase in healthy bacteria

The study met its primary outcome of changes in gut microbiome at the end of the 12-week intervention, as measured on shallow shotgun sequencing.

The probiotic was associated with a “statistically significant increase of the abundance of bacteria which are known to have beneficial health related properties, such as Odoribacteraceae,” Dr. Leta said.

This bacterium is “known to be reduced in people with Parkinson’s disease,” she explained, “and is involved in the production of short-chain fatty acids, which are known to have beneficial health-related properties.”

The secondary endpoint of the study included changes in motor and nonmotor symptoms, and the probiotic was associated with a significant improvement in the “time to on” with levodopa treatment, shortening this period from an average of 31.43 minutes at baseline to 23.95 minutes at the postintervention assessment (P < .027).

There was also a significant improvement in the Non-Motor Symptoms Scale (NMSS) score between baseline and the postintervention assessment in patients given the probiotic, from 70.71 to 61.34 (P = .005).

This, Dr. Leta observed, was “driven by improvements in the sleep, fatigue, and gastrointestinal domains.”

No such significant improvements were observed in the placebo arm.
 

Probiotics ‘hot topic’ among patients

Claudia Trenkwalder, MD, full professor of neurology at University Medical Center Goettingen (Germany), said in an interview that the use of probiotics is a “hot topic in Parkinson’s disease research, especially among patients.”

Dr. Trenkwalder, who was not involved in the study, noted that Lactobacillus strains “are established in Parkinson’s disease constipation treatment, with randomized controlled trials showing a significant improvement in constipation.

“Therefore, this is a useful treatment. The question here is: Do we have additional effects that can be measured in the microbiome and in clinical symptomatology?”

The trial showed that the probiotic studied “did alter the microbiome and did improve the constipation,” said Dr. Trenkwalder; however, the current data cannot prove whether the probiotic influenced the symptoms of Parkinson’s disease because the improvement in NMSS scores “is driven by the improvement in constipation.”

This, she argued, could have resulted in better absorption of levodopa.

A dietitian in the audience agreed. She asked whether the probiotic was doing anything “besides improving constipation,” adding that the resulting increased ability to absorb levodopa is also “going to help your sleep.”
 

Beyond constipation?

Dr. Leta replied that “we can assume that there is a link between the reduction in the ‘time to on’ and the improvement in constipation. We are doing some analyses in terms of levodopa pharmacokinetics to really understand the mechanisms behind this result.”

Although the improvement in constipation is “one of the possible hypotheses for the improvement in ‘time to on,’” she continued, “there is a more speculative one” in which the probiotics are modulating inflammatory parameters that could contribute to the improvement in sleep.

Veronica Bruno, MD, MPH, assistant professor in the department of clinical neurosciences at the University of Calgary (Alta.), commented in a press release that there has been “increasing interest” in examining the relationship between gut dysbiosis and the “gut-brain axis” in Parkinson’s disease.

The current study “stands out as a significant contribution to this area of study,” she said.

“While the implications of the observed changes in gut microbiota remain a captivating realm for further investigation, a particularly noteworthy finding revolves around the reduction in the ‘time to on’ observed within the active treatment group.”

Dr. Bruno said that shortening of the time to on “holds promise for substantial enhancements in patients’ lives” by reducing “difficult ‘off’ intervals and enhancing overall well-being.”

The study was funded by the UK National Institute for Health Research Mental Health Biomedical Research Centre and Dementia Unit at South London and Maudsley NHS Foundation Trust, and King’s College London. No relevant financial relationships were declared.

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

COPENHAGEN – Giving patients with Parkinson’s disease and constipation a probiotic for 3 months improved not only their gut microbiome but also nonmotor symptoms such as sleep, fatigue, and constipation, results of a new randomized trial show.

Participants taking the probiotic also saw a reduced delay in “time to on” of treatment with levodopa, thus reducing the delay until effectiveness of the treatment, said study presenter Valentina Leta, MD, PhD, department of neurosciences, King’s College London Institute of Psychiatry, Psychology and Neuroscience.

Dr. Leta presented the findings at the International Congress of Parkinson’s Disease and Movement Disorders.

“Virtually every person with Parkinson’s might have some degree of gastrointestinal dysfunction, and virtually the entire tract might be affected, from the mouth to the rectum,” Dr. Leta told attendees of the congress.

A number of different mechanisms have been associated with this gastrointestinal dysfunction, she noted, including proinflammatory changes in the gut microbiota, so a modulatory intervention “could be a therapeutic strategy for Parkinson’s disease.”

However, “despite numerous preclinical studies showing potential beneficial effects on a variety of pathological mechanisms involved in Parkinson’s disease, the clinical evidence is limited ... to the treatment of constipation,” she explained.

The team therefore conducted a multicenter, randomized, double-blind, placebo-controlled trial, in which patients with both Parkinson’s disease and constipation, based on the Rome IV criteria, were randomly assigned to receive a probiotic or placebo for 3 months.

The probiotic used was a liquid formulation (Symprove) and contained four strains: Lacticaseibacillus rhamnosus, Enterococcus faecium, Lactobacillus acidophilus, and Lactiplantibacillus plantarum.

A total of 74 patients were randomly assigned to the two study arms. The two groups were well matched for sociodemographics, Parkinson’s disease, and constipation-related characteristics, Dr. Leta reported, and only 3 patients in each arm discontinued the study. The probiotic intervention had a “good tolerability and safety profile, with a similar number of adverse events between the two groups, and no serious adverse events.”
 

Increase in healthy bacteria

The study met its primary outcome of changes in gut microbiome at the end of the 12-week intervention, as measured on shallow shotgun sequencing.

The probiotic was associated with a “statistically significant increase of the abundance of bacteria which are known to have beneficial health related properties, such as Odoribacteraceae,” Dr. Leta said.

This bacterium is “known to be reduced in people with Parkinson’s disease,” she explained, “and is involved in the production of short-chain fatty acids, which are known to have beneficial health-related properties.”

The secondary endpoint of the study included changes in motor and nonmotor symptoms, and the probiotic was associated with a significant improvement in the “time to on” with levodopa treatment, shortening this period from an average of 31.43 minutes at baseline to 23.95 minutes at the postintervention assessment (P < .027).

There was also a significant improvement in the Non-Motor Symptoms Scale (NMSS) score between baseline and the postintervention assessment in patients given the probiotic, from 70.71 to 61.34 (P = .005).

This, Dr. Leta observed, was “driven by improvements in the sleep, fatigue, and gastrointestinal domains.”

No such significant improvements were observed in the placebo arm.
 

Probiotics ‘hot topic’ among patients

Claudia Trenkwalder, MD, full professor of neurology at University Medical Center Goettingen (Germany), said in an interview that the use of probiotics is a “hot topic in Parkinson’s disease research, especially among patients.”

Dr. Trenkwalder, who was not involved in the study, noted that Lactobacillus strains “are established in Parkinson’s disease constipation treatment, with randomized controlled trials showing a significant improvement in constipation.

“Therefore, this is a useful treatment. The question here is: Do we have additional effects that can be measured in the microbiome and in clinical symptomatology?”

The trial showed that the probiotic studied “did alter the microbiome and did improve the constipation,” said Dr. Trenkwalder; however, the current data cannot prove whether the probiotic influenced the symptoms of Parkinson’s disease because the improvement in NMSS scores “is driven by the improvement in constipation.”

This, she argued, could have resulted in better absorption of levodopa.

A dietitian in the audience agreed. She asked whether the probiotic was doing anything “besides improving constipation,” adding that the resulting increased ability to absorb levodopa is also “going to help your sleep.”
 

Beyond constipation?

Dr. Leta replied that “we can assume that there is a link between the reduction in the ‘time to on’ and the improvement in constipation. We are doing some analyses in terms of levodopa pharmacokinetics to really understand the mechanisms behind this result.”

Although the improvement in constipation is “one of the possible hypotheses for the improvement in ‘time to on,’” she continued, “there is a more speculative one” in which the probiotics are modulating inflammatory parameters that could contribute to the improvement in sleep.

Veronica Bruno, MD, MPH, assistant professor in the department of clinical neurosciences at the University of Calgary (Alta.), commented in a press release that there has been “increasing interest” in examining the relationship between gut dysbiosis and the “gut-brain axis” in Parkinson’s disease.

The current study “stands out as a significant contribution to this area of study,” she said.

“While the implications of the observed changes in gut microbiota remain a captivating realm for further investigation, a particularly noteworthy finding revolves around the reduction in the ‘time to on’ observed within the active treatment group.”

Dr. Bruno said that shortening of the time to on “holds promise for substantial enhancements in patients’ lives” by reducing “difficult ‘off’ intervals and enhancing overall well-being.”

The study was funded by the UK National Institute for Health Research Mental Health Biomedical Research Centre and Dementia Unit at South London and Maudsley NHS Foundation Trust, and King’s College London. No relevant financial relationships were declared.

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

COPENHAGEN – Giving patients with Parkinson’s disease and constipation a probiotic for 3 months improved not only their gut microbiome but also nonmotor symptoms such as sleep, fatigue, and constipation, results of a new randomized trial show.

Participants taking the probiotic also saw a reduced delay in “time to on” of treatment with levodopa, thus reducing the delay until effectiveness of the treatment, said study presenter Valentina Leta, MD, PhD, department of neurosciences, King’s College London Institute of Psychiatry, Psychology and Neuroscience.

Dr. Leta presented the findings at the International Congress of Parkinson’s Disease and Movement Disorders.

“Virtually every person with Parkinson’s might have some degree of gastrointestinal dysfunction, and virtually the entire tract might be affected, from the mouth to the rectum,” Dr. Leta told attendees of the congress.

A number of different mechanisms have been associated with this gastrointestinal dysfunction, she noted, including proinflammatory changes in the gut microbiota, so a modulatory intervention “could be a therapeutic strategy for Parkinson’s disease.”

However, “despite numerous preclinical studies showing potential beneficial effects on a variety of pathological mechanisms involved in Parkinson’s disease, the clinical evidence is limited ... to the treatment of constipation,” she explained.

The team therefore conducted a multicenter, randomized, double-blind, placebo-controlled trial, in which patients with both Parkinson’s disease and constipation, based on the Rome IV criteria, were randomly assigned to receive a probiotic or placebo for 3 months.

The probiotic used was a liquid formulation (Symprove) and contained four strains: Lacticaseibacillus rhamnosus, Enterococcus faecium, Lactobacillus acidophilus, and Lactiplantibacillus plantarum.

A total of 74 patients were randomly assigned to the two study arms. The two groups were well matched for sociodemographics, Parkinson’s disease, and constipation-related characteristics, Dr. Leta reported, and only 3 patients in each arm discontinued the study. The probiotic intervention had a “good tolerability and safety profile, with a similar number of adverse events between the two groups, and no serious adverse events.”
 

Increase in healthy bacteria

The study met its primary outcome of changes in gut microbiome at the end of the 12-week intervention, as measured on shallow shotgun sequencing.

The probiotic was associated with a “statistically significant increase of the abundance of bacteria which are known to have beneficial health related properties, such as Odoribacteraceae,” Dr. Leta said.

This bacterium is “known to be reduced in people with Parkinson’s disease,” she explained, “and is involved in the production of short-chain fatty acids, which are known to have beneficial health-related properties.”

The secondary endpoint of the study included changes in motor and nonmotor symptoms, and the probiotic was associated with a significant improvement in the “time to on” with levodopa treatment, shortening this period from an average of 31.43 minutes at baseline to 23.95 minutes at the postintervention assessment (P < .027).

There was also a significant improvement in the Non-Motor Symptoms Scale (NMSS) score between baseline and the postintervention assessment in patients given the probiotic, from 70.71 to 61.34 (P = .005).

This, Dr. Leta observed, was “driven by improvements in the sleep, fatigue, and gastrointestinal domains.”

No such significant improvements were observed in the placebo arm.
 

Probiotics ‘hot topic’ among patients

Claudia Trenkwalder, MD, full professor of neurology at University Medical Center Goettingen (Germany), said in an interview that the use of probiotics is a “hot topic in Parkinson’s disease research, especially among patients.”

Dr. Trenkwalder, who was not involved in the study, noted that Lactobacillus strains “are established in Parkinson’s disease constipation treatment, with randomized controlled trials showing a significant improvement in constipation.

“Therefore, this is a useful treatment. The question here is: Do we have additional effects that can be measured in the microbiome and in clinical symptomatology?”

The trial showed that the probiotic studied “did alter the microbiome and did improve the constipation,” said Dr. Trenkwalder; however, the current data cannot prove whether the probiotic influenced the symptoms of Parkinson’s disease because the improvement in NMSS scores “is driven by the improvement in constipation.”

This, she argued, could have resulted in better absorption of levodopa.

A dietitian in the audience agreed. She asked whether the probiotic was doing anything “besides improving constipation,” adding that the resulting increased ability to absorb levodopa is also “going to help your sleep.”
 

Beyond constipation?

Dr. Leta replied that “we can assume that there is a link between the reduction in the ‘time to on’ and the improvement in constipation. We are doing some analyses in terms of levodopa pharmacokinetics to really understand the mechanisms behind this result.”

Although the improvement in constipation is “one of the possible hypotheses for the improvement in ‘time to on,’” she continued, “there is a more speculative one” in which the probiotics are modulating inflammatory parameters that could contribute to the improvement in sleep.

Veronica Bruno, MD, MPH, assistant professor in the department of clinical neurosciences at the University of Calgary (Alta.), commented in a press release that there has been “increasing interest” in examining the relationship between gut dysbiosis and the “gut-brain axis” in Parkinson’s disease.

The current study “stands out as a significant contribution to this area of study,” she said.

“While the implications of the observed changes in gut microbiota remain a captivating realm for further investigation, a particularly noteworthy finding revolves around the reduction in the ‘time to on’ observed within the active treatment group.”

Dr. Bruno said that shortening of the time to on “holds promise for substantial enhancements in patients’ lives” by reducing “difficult ‘off’ intervals and enhancing overall well-being.”

The study was funded by the UK National Institute for Health Research Mental Health Biomedical Research Centre and Dementia Unit at South London and Maudsley NHS Foundation Trust, and King’s College London. No relevant financial relationships were declared.

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

The largest study to date of chronic traumatic encephalopathy (CTE) in young athletes shows that 41% had the neurodegenerative disease, caused by repetitive head impacts (RHIs).

Analysis of brain tissue from athletes who were exposed to RHIs and died before the age of 30 revealed neuropathological evidence of shrinkage of the brain and microscopic changes that indicate a breach of the blood-brain barrier. The case series also identified the first known American female athlete with CTE.

Nearly all of those with CTE had a mild form of the disease and 71% played only at the amateur level in youth, high school, or college sports.

“A lot of people think CTE is a result of high-level, professional play such as football, ice hockey, and boxing, but it can affect amateur athletes and can affect people at a young age,” lead author Ann McKee, MD, professor of neurology and pathology and director of the Chronic Traumatic Encephalopathy Center at Boston University, said in an interview.

The findings were published online in JAMA Neurology.
 

A rare look

Brain donation at younger ages is rare, so most of what is known about CTE comes from studies in older athletes.

“We’ve always known that young people could develop this disease early after just amateur high school, youth, and college exposure, but this is the largest study of donor brains at this age,” Dr. McKee said.

The case series included 152 brains of athletes who played contact sports, experienced RHIs, and died before age 30. The tissues are part of the Understanding Neurologic Injury and Traumatic Encephalopathy (UNITE) Brain Bank and were donated between February 2008 and September 2022.

Researchers reviewed the donors’ medical records and conducted retrospective interviews with the donors’ next of kin to assess cognitive symptoms, mood disturbances, and neurobehavioral issues.

Donors died between the ages of 13 and 29 years, 92.8% were male and 73% were White. In 57.2% of the cases, suicide was the cause of death, with no difference between those with or without CTE.

CTE was neuropathologically diagnosed in 41.4% of athletes, using diagnostic criteria developed by the National Institute of Neurological Disorders and Stroke. 

More than 95% had mild CTE. Diagnosis was associated with older age (mean difference, 3.92 years; P < .001) and significantly more years of exposure to contact sports (11.6 vs. 8.8 years).

Among those with CTE, 71.4% played amateur sports, including football (60.9%), soccer (17.2%), hockey (7.8%), and wrestling (7%).

The cohort includes the first known American female athlete with CTE. Recruiting female brain donors has always been a challenge, Dr. McKee said. In this study, females comprised about 7% of the entire cohort and tended to be younger and play fewer years of a sport, compared with their male counterparts. All of that could lower their risk for CTE, Dr. McKee said.

“We don’t have enough brain donations to make any comments about differences between the genders, but we’ve always known that women can develop CTE,” she said. “It’s been reported after domestic violence and in an autistic woman who was a headbanger, so it was just a matter of time before we found our first case.”
 

Early stage of CTE?

Neuropathological analysis revealed neuronal p-tau aggregates in all CTE cases, a hallmark of the disease.

Young athletes with CTE had significantly more ventricular dilatation, suggesting atrophy or shrinkage of the brain, and more cavum septum pellucidum.

“I was surprised that even at this very young age group we could see structural changes to the gross pathology,” Dr. McKee said.

Investigators also found evidence of perivascular macrophages in the deep white matter, a microscopic change that correlated with CTE and years of play and indicates a breach of the blood-brain barrier that could allow pro-inflammatory molecules to enter the brain, setting up a neuroinflammatory response.

“Neuroinflammation is a very early change after repetitive head impacts, as well as in CTE,” Dr. McKee said. “This may be one of the mechanisms by which the inflammation starts, meaning microvascular injury might be an integral part of the pathogenesis of CTE.”
 

A message for clinicians

All athletes had symptoms of mood and neurobehavioral dysfunction common in people with RHIs. There were no significant differences in those clinical symptoms based on CTE diagnosis, which is likely related to the retrospective nature of the clinical evaluations, Dr. McKee said.

While the study leaves many questions about CTE in younger athletes unanswered, there is a message for clinicians and for patients in the findings, she said.

For clinicians, it’s important to note that “this young population of amateur athletes can be very symptomatic, and in all likelihood, a lot of these symptoms are reversible with proper care and management,” Dr. McKee said.

“For individual athletes, it’s important to note that 58% of this cohort did not have CTE, so just because you have these symptoms is not an indication that you have a neurodegenerative disease,” she added.

The study was funded by Andlinger Foundation, the National Football League, Mac Parkman Foundation, National Operating Committee on Standards for Athletic Equipment, and the Nick and Lynn Buoniconti Foundation, World Wrestling Entertainment, Alzheimer’s Association, National Institutes of Health, Concussion Legacy Foundation, U.S. Department of Defense and the U.S. Department of Veterans Affairs. Dr. McKee is a member of the Mackey-White Health and Safety Committee of the National Football League Players Association and reported receiving grants from the NIH and Department of Veteran Affairs and other funding from the Buoniconti Foundation and Mac Parkman Foundation during the conduct of the study.

A version of this article appeared on Medscape.com.

The largest study to date of chronic traumatic encephalopathy (CTE) in young athletes shows that 41% had the neurodegenerative disease, caused by repetitive head impacts (RHIs).

Analysis of brain tissue from athletes who were exposed to RHIs and died before the age of 30 revealed neuropathological evidence of shrinkage of the brain and microscopic changes that indicate a breach of the blood-brain barrier. The case series also identified the first known American female athlete with CTE.

Nearly all of those with CTE had a mild form of the disease and 71% played only at the amateur level in youth, high school, or college sports.

“A lot of people think CTE is a result of high-level, professional play such as football, ice hockey, and boxing, but it can affect amateur athletes and can affect people at a young age,” lead author Ann McKee, MD, professor of neurology and pathology and director of the Chronic Traumatic Encephalopathy Center at Boston University, said in an interview.

The findings were published online in JAMA Neurology.
 

A rare look

Brain donation at younger ages is rare, so most of what is known about CTE comes from studies in older athletes.

“We’ve always known that young people could develop this disease early after just amateur high school, youth, and college exposure, but this is the largest study of donor brains at this age,” Dr. McKee said.

The case series included 152 brains of athletes who played contact sports, experienced RHIs, and died before age 30. The tissues are part of the Understanding Neurologic Injury and Traumatic Encephalopathy (UNITE) Brain Bank and were donated between February 2008 and September 2022.

Researchers reviewed the donors’ medical records and conducted retrospective interviews with the donors’ next of kin to assess cognitive symptoms, mood disturbances, and neurobehavioral issues.

Donors died between the ages of 13 and 29 years, 92.8% were male and 73% were White. In 57.2% of the cases, suicide was the cause of death, with no difference between those with or without CTE.

CTE was neuropathologically diagnosed in 41.4% of athletes, using diagnostic criteria developed by the National Institute of Neurological Disorders and Stroke. 

More than 95% had mild CTE. Diagnosis was associated with older age (mean difference, 3.92 years; P < .001) and significantly more years of exposure to contact sports (11.6 vs. 8.8 years).

Among those with CTE, 71.4% played amateur sports, including football (60.9%), soccer (17.2%), hockey (7.8%), and wrestling (7%).

The cohort includes the first known American female athlete with CTE. Recruiting female brain donors has always been a challenge, Dr. McKee said. In this study, females comprised about 7% of the entire cohort and tended to be younger and play fewer years of a sport, compared with their male counterparts. All of that could lower their risk for CTE, Dr. McKee said.

“We don’t have enough brain donations to make any comments about differences between the genders, but we’ve always known that women can develop CTE,” she said. “It’s been reported after domestic violence and in an autistic woman who was a headbanger, so it was just a matter of time before we found our first case.”
 

Early stage of CTE?

Neuropathological analysis revealed neuronal p-tau aggregates in all CTE cases, a hallmark of the disease.

Young athletes with CTE had significantly more ventricular dilatation, suggesting atrophy or shrinkage of the brain, and more cavum septum pellucidum.

“I was surprised that even at this very young age group we could see structural changes to the gross pathology,” Dr. McKee said.

Investigators also found evidence of perivascular macrophages in the deep white matter, a microscopic change that correlated with CTE and years of play and indicates a breach of the blood-brain barrier that could allow pro-inflammatory molecules to enter the brain, setting up a neuroinflammatory response.

“Neuroinflammation is a very early change after repetitive head impacts, as well as in CTE,” Dr. McKee said. “This may be one of the mechanisms by which the inflammation starts, meaning microvascular injury might be an integral part of the pathogenesis of CTE.”
 

A message for clinicians

All athletes had symptoms of mood and neurobehavioral dysfunction common in people with RHIs. There were no significant differences in those clinical symptoms based on CTE diagnosis, which is likely related to the retrospective nature of the clinical evaluations, Dr. McKee said.

While the study leaves many questions about CTE in younger athletes unanswered, there is a message for clinicians and for patients in the findings, she said.

For clinicians, it’s important to note that “this young population of amateur athletes can be very symptomatic, and in all likelihood, a lot of these symptoms are reversible with proper care and management,” Dr. McKee said.

“For individual athletes, it’s important to note that 58% of this cohort did not have CTE, so just because you have these symptoms is not an indication that you have a neurodegenerative disease,” she added.

The study was funded by Andlinger Foundation, the National Football League, Mac Parkman Foundation, National Operating Committee on Standards for Athletic Equipment, and the Nick and Lynn Buoniconti Foundation, World Wrestling Entertainment, Alzheimer’s Association, National Institutes of Health, Concussion Legacy Foundation, U.S. Department of Defense and the U.S. Department of Veterans Affairs. Dr. McKee is a member of the Mackey-White Health and Safety Committee of the National Football League Players Association and reported receiving grants from the NIH and Department of Veteran Affairs and other funding from the Buoniconti Foundation and Mac Parkman Foundation during the conduct of the study.

A version of this article appeared on Medscape.com.

The largest study to date of chronic traumatic encephalopathy (CTE) in young athletes shows that 41% had the neurodegenerative disease, caused by repetitive head impacts (RHIs).

Analysis of brain tissue from athletes who were exposed to RHIs and died before the age of 30 revealed neuropathological evidence of shrinkage of the brain and microscopic changes that indicate a breach of the blood-brain barrier. The case series also identified the first known American female athlete with CTE.

Nearly all of those with CTE had a mild form of the disease and 71% played only at the amateur level in youth, high school, or college sports.

“A lot of people think CTE is a result of high-level, professional play such as football, ice hockey, and boxing, but it can affect amateur athletes and can affect people at a young age,” lead author Ann McKee, MD, professor of neurology and pathology and director of the Chronic Traumatic Encephalopathy Center at Boston University, said in an interview.

The findings were published online in JAMA Neurology.
 

A rare look

Brain donation at younger ages is rare, so most of what is known about CTE comes from studies in older athletes.

“We’ve always known that young people could develop this disease early after just amateur high school, youth, and college exposure, but this is the largest study of donor brains at this age,” Dr. McKee said.

The case series included 152 brains of athletes who played contact sports, experienced RHIs, and died before age 30. The tissues are part of the Understanding Neurologic Injury and Traumatic Encephalopathy (UNITE) Brain Bank and were donated between February 2008 and September 2022.

Researchers reviewed the donors’ medical records and conducted retrospective interviews with the donors’ next of kin to assess cognitive symptoms, mood disturbances, and neurobehavioral issues.

Donors died between the ages of 13 and 29 years, 92.8% were male and 73% were White. In 57.2% of the cases, suicide was the cause of death, with no difference between those with or without CTE.

CTE was neuropathologically diagnosed in 41.4% of athletes, using diagnostic criteria developed by the National Institute of Neurological Disorders and Stroke. 

More than 95% had mild CTE. Diagnosis was associated with older age (mean difference, 3.92 years; P < .001) and significantly more years of exposure to contact sports (11.6 vs. 8.8 years).

Among those with CTE, 71.4% played amateur sports, including football (60.9%), soccer (17.2%), hockey (7.8%), and wrestling (7%).

The cohort includes the first known American female athlete with CTE. Recruiting female brain donors has always been a challenge, Dr. McKee said. In this study, females comprised about 7% of the entire cohort and tended to be younger and play fewer years of a sport, compared with their male counterparts. All of that could lower their risk for CTE, Dr. McKee said.

“We don’t have enough brain donations to make any comments about differences between the genders, but we’ve always known that women can develop CTE,” she said. “It’s been reported after domestic violence and in an autistic woman who was a headbanger, so it was just a matter of time before we found our first case.”
 

Early stage of CTE?

Neuropathological analysis revealed neuronal p-tau aggregates in all CTE cases, a hallmark of the disease.

Young athletes with CTE had significantly more ventricular dilatation, suggesting atrophy or shrinkage of the brain, and more cavum septum pellucidum.

“I was surprised that even at this very young age group we could see structural changes to the gross pathology,” Dr. McKee said.

Investigators also found evidence of perivascular macrophages in the deep white matter, a microscopic change that correlated with CTE and years of play and indicates a breach of the blood-brain barrier that could allow pro-inflammatory molecules to enter the brain, setting up a neuroinflammatory response.

“Neuroinflammation is a very early change after repetitive head impacts, as well as in CTE,” Dr. McKee said. “This may be one of the mechanisms by which the inflammation starts, meaning microvascular injury might be an integral part of the pathogenesis of CTE.”
 

A message for clinicians

All athletes had symptoms of mood and neurobehavioral dysfunction common in people with RHIs. There were no significant differences in those clinical symptoms based on CTE diagnosis, which is likely related to the retrospective nature of the clinical evaluations, Dr. McKee said.

While the study leaves many questions about CTE in younger athletes unanswered, there is a message for clinicians and for patients in the findings, she said.

For clinicians, it’s important to note that “this young population of amateur athletes can be very symptomatic, and in all likelihood, a lot of these symptoms are reversible with proper care and management,” Dr. McKee said.

“For individual athletes, it’s important to note that 58% of this cohort did not have CTE, so just because you have these symptoms is not an indication that you have a neurodegenerative disease,” she added.

The study was funded by Andlinger Foundation, the National Football League, Mac Parkman Foundation, National Operating Committee on Standards for Athletic Equipment, and the Nick and Lynn Buoniconti Foundation, World Wrestling Entertainment, Alzheimer’s Association, National Institutes of Health, Concussion Legacy Foundation, U.S. Department of Defense and the U.S. Department of Veterans Affairs. Dr. McKee is a member of the Mackey-White Health and Safety Committee of the National Football League Players Association and reported receiving grants from the NIH and Department of Veteran Affairs and other funding from the Buoniconti Foundation and Mac Parkman Foundation during the conduct of the study.

A version of this article appeared on Medscape.com.

TOPLINE:

Both short and long sleep durations appear to increase the risk for type 2 diabetes, independent of lifestyle and cardiovascular risk factors, suggests an analysis of a Dutch study.

METHODOLOGY:

• Data on 5,561 participants aged 40–75 years from The Maastricht Study who completed the baseline survey between November 2010 and January 2018 and had full data available were included.
• Sleep duration was assessed as the in-bed time in minutes, using a median of 7 nights’ data from an activPAL3 (PAL Technologies) accelerometer, which is worn on the thigh.
• Glucose metabolism was determined via an oral glucose tolerance test and categorized as prediabetes or type 2 diabetes in line with World Health Organization diagnostic criteria.
• The association between sleep duration and type 2 diabetes was assessed on multivariate logistic regression analysis, taking into account a range of potential confounding factors.

TAKEAWAY:

• The mean age of the participants was 60.1 years, and there was an even split between men and women. In all, 832 had prediabetes and 1,341 type 2 diabetes, and the mean sleep duration was 8.3 hours.
• The results indicated there was a U-shaped relationship between sleep duration and type 2 diabetes, so that both long and short sleep durations increased the risk.
• In the fully adjusted model, a sleep duration of 5 hours was associated with an odds ratio for type 2 diabetes versus 8 hours sleep of 2.9. For a sleep duration of 12 hours, the odds ratio was 1.8.
• The association between sleep duration and diabetes was not significant.

IN PRACTICE:

The results “support the idea that sleep duration could be a relevant risk factor for type 2 diabetes independent of lifestyle risk factors, including diet, physical activity, smoking behavior, and alcohol consumption,” wrote the authors.

“These findings underpin the importance of promoting healthy sleep habits to avoid sleep deprivation,” they added.
 

STUDY DETAILS:

The research was led by Jeroen D. Albers, MSc, department of social medicine, Maastricht (the Netherlands) University, and published in Sleep Health. It is an analysis of The Maastricht Study.

LIMITATIONS:

The study is limited by its cross-sectional nature, particularly because there are “plausible causal paths between sleep duration and type 2 in both directions,” the authors note. The accelerometer used in the study also cannot reliably distinguish between waking and sleeping time in bed, with the potential for misclassification. Daytime naps were also not included, and long-term changes sleep patterns were not measured. In addition, it was not possible to control for some potential confounding factors.

DISCLOSURES:

The Maastricht Study was supported by the European Regional Development Fund via OP-Zuid, the Province of Limburg, the Dutch Ministry of Economic Affairs, Stichting De Weijerhorst, the Pearl String Initiative Diabetes, the School for Cardiovascular Diseases, the School for Public Health and Primary Care, the School for Nutrition and Translational Research in Metabolism, Stichting Annadal, Health Foundation Limburg, and unrestricted grants from Janssen-Cilag, Novo Nordisk, and Sanofi Aventis Netherlands. One author declares a relationship with Novo Nordisk outside the submitted work. No other relevant financial relationships were declared.

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

TOPLINE:

Both short and long sleep durations appear to increase the risk for type 2 diabetes, independent of lifestyle and cardiovascular risk factors, suggests an analysis of a Dutch study.

METHODOLOGY:

• Data on 5,561 participants aged 40–75 years from The Maastricht Study who completed the baseline survey between November 2010 and January 2018 and had full data available were included.
• Sleep duration was assessed as the in-bed time in minutes, using a median of 7 nights’ data from an activPAL3 (PAL Technologies) accelerometer, which is worn on the thigh.
• Glucose metabolism was determined via an oral glucose tolerance test and categorized as prediabetes or type 2 diabetes in line with World Health Organization diagnostic criteria.
• The association between sleep duration and type 2 diabetes was assessed on multivariate logistic regression analysis, taking into account a range of potential confounding factors.

TAKEAWAY:

• The mean age of the participants was 60.1 years, and there was an even split between men and women. In all, 832 had prediabetes and 1,341 type 2 diabetes, and the mean sleep duration was 8.3 hours.
• The results indicated there was a U-shaped relationship between sleep duration and type 2 diabetes, so that both long and short sleep durations increased the risk.
• In the fully adjusted model, a sleep duration of 5 hours was associated with an odds ratio for type 2 diabetes versus 8 hours sleep of 2.9. For a sleep duration of 12 hours, the odds ratio was 1.8.
• The association between sleep duration and diabetes was not significant.

IN PRACTICE:

The results “support the idea that sleep duration could be a relevant risk factor for type 2 diabetes independent of lifestyle risk factors, including diet, physical activity, smoking behavior, and alcohol consumption,” wrote the authors.

“These findings underpin the importance of promoting healthy sleep habits to avoid sleep deprivation,” they added.
 

STUDY DETAILS:

The research was led by Jeroen D. Albers, MSc, department of social medicine, Maastricht (the Netherlands) University, and published in Sleep Health. It is an analysis of The Maastricht Study.

LIMITATIONS:

The study is limited by its cross-sectional nature, particularly because there are “plausible causal paths between sleep duration and type 2 in both directions,” the authors note. The accelerometer used in the study also cannot reliably distinguish between waking and sleeping time in bed, with the potential for misclassification. Daytime naps were also not included, and long-term changes sleep patterns were not measured. In addition, it was not possible to control for some potential confounding factors.

DISCLOSURES:

The Maastricht Study was supported by the European Regional Development Fund via OP-Zuid, the Province of Limburg, the Dutch Ministry of Economic Affairs, Stichting De Weijerhorst, the Pearl String Initiative Diabetes, the School for Cardiovascular Diseases, the School for Public Health and Primary Care, the School for Nutrition and Translational Research in Metabolism, Stichting Annadal, Health Foundation Limburg, and unrestricted grants from Janssen-Cilag, Novo Nordisk, and Sanofi Aventis Netherlands. One author declares a relationship with Novo Nordisk outside the submitted work. No other relevant financial relationships were declared.

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

TOPLINE:

Both short and long sleep durations appear to increase the risk for type 2 diabetes, independent of lifestyle and cardiovascular risk factors, suggests an analysis of a Dutch study.

METHODOLOGY:

• Data on 5,561 participants aged 40–75 years from The Maastricht Study who completed the baseline survey between November 2010 and January 2018 and had full data available were included.
• Sleep duration was assessed as the in-bed time in minutes, using a median of 7 nights’ data from an activPAL3 (PAL Technologies) accelerometer, which is worn on the thigh.
• Glucose metabolism was determined via an oral glucose tolerance test and categorized as prediabetes or type 2 diabetes in line with World Health Organization diagnostic criteria.
• The association between sleep duration and type 2 diabetes was assessed on multivariate logistic regression analysis, taking into account a range of potential confounding factors.

TAKEAWAY:

• The mean age of the participants was 60.1 years, and there was an even split between men and women. In all, 832 had prediabetes and 1,341 type 2 diabetes, and the mean sleep duration was 8.3 hours.
• The results indicated there was a U-shaped relationship between sleep duration and type 2 diabetes, so that both long and short sleep durations increased the risk.
• In the fully adjusted model, a sleep duration of 5 hours was associated with an odds ratio for type 2 diabetes versus 8 hours sleep of 2.9. For a sleep duration of 12 hours, the odds ratio was 1.8.
• The association between sleep duration and diabetes was not significant.

IN PRACTICE:

The results “support the idea that sleep duration could be a relevant risk factor for type 2 diabetes independent of lifestyle risk factors, including diet, physical activity, smoking behavior, and alcohol consumption,” wrote the authors.

“These findings underpin the importance of promoting healthy sleep habits to avoid sleep deprivation,” they added.
 

STUDY DETAILS:

The research was led by Jeroen D. Albers, MSc, department of social medicine, Maastricht (the Netherlands) University, and published in Sleep Health. It is an analysis of The Maastricht Study.

LIMITATIONS:

The study is limited by its cross-sectional nature, particularly because there are “plausible causal paths between sleep duration and type 2 in both directions,” the authors note. The accelerometer used in the study also cannot reliably distinguish between waking and sleeping time in bed, with the potential for misclassification. Daytime naps were also not included, and long-term changes sleep patterns were not measured. In addition, it was not possible to control for some potential confounding factors.

DISCLOSURES:

The Maastricht Study was supported by the European Regional Development Fund via OP-Zuid, the Province of Limburg, the Dutch Ministry of Economic Affairs, Stichting De Weijerhorst, the Pearl String Initiative Diabetes, the School for Cardiovascular Diseases, the School for Public Health and Primary Care, the School for Nutrition and Translational Research in Metabolism, Stichting Annadal, Health Foundation Limburg, and unrestricted grants from Janssen-Cilag, Novo Nordisk, and Sanofi Aventis Netherlands. One author declares a relationship with Novo Nordisk outside the submitted work. No other relevant financial relationships were declared.

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

Severe COVID infections may lead to lasting damage to the immune system, new research finds.

The small study, published in Cell and funded by the National Institutes of Health, details how immune cells were analyzed through blood samples collected from 38 patients recovering from severe COVID and other critical illnesses, and from 19 healthy people. Researchers from Weill Cornell Medicine, New York, and The Jackson Laboratory for Genomic Medicine, Farmington, Conn., found through isolating hematopoietic stem cells that people recovering from severe bouts of COVID had changes to their DNA that were passed down to offspring cells.

The research team, led by Steven Josefowicz, PhD, of Weill Cornell’s pathology department, and Duygu Ucar, PhD, associate professor at The Jackson Laboratory for Genomic Medicine, discovered that this chain reaction of stem cell changes caused a boost in the production of monocytes. The authors found that, due to the innate cellular changes from a severe case of COVID, patients in recovery ended up producing a larger amount of inflammatory cytokines, rather than monocytes – distinct from samples collected from healthy patients and those recovering from other critical illnesses.

These changes to patients’ epigenetic landscapes were observed even a year after the initial COVID-19 infection. While the small participant pool meant that the research team could not establish a direct line between these innate changes and any ensuing health outcomes, the research provides us with clues as to why patients continue to struggle with inflammation and long COVID symptoms well after they recover.

While the authors reiterate the study’s limitations and hesitate to make any clear-cut associations between the results and long-term health outcomes, Wolfgang Leitner, PhD, from the NIH’s National Institute of Allergy and Infectious Diseases, predicts that long COVID can, at least in part, be explained by the changes in innate immune responses.

“Ideally, the authors would have had cells from each patient before they got infected, as a comparator, to see what the epigenetic landscape was before COVID changed it,” said Dr. Leitner. “Clear links between the severity of COVID and genetics were discovered already early in the pandemic and this paper should prompt follow-up studies that link mutations in immune genes with the epigenetic changes described here.”

Dr. Leitner said he had some initial predictions about the long-term impact of COVID-19, but he had not anticipated some of what the study’s findings now show.

“Unlike in the case of, for example, influenza, where the lungs go into ‘repair mode’ after the infection has been resolved – which leaves people susceptible to secondary infections for up to several months – this study shows that after severe COVID, the immune system remains in ‘emergency mode’ and in a heightened state of inflammation,” said Dr. Leitner.

“That further aggravates the problem the initial strong inflammation causes: even higher risk of autoimmune disease, but also, cancer.”

Commenting on the findings, Eric Topol, MD, editor-in-chief of Medscape Medical News, said the study presents “evidence that a key line of immune cells are essentially irrevocably, epigenetically altered and activated.

“You do not want to have this [COVID],” he added.

The study also highlights the researchers’ novel approach to isolating hematopoietic stem cells, found largely in bone marrow. This type of research has been limited in the past because of how costly and invasive it can be to analyze cells in bone marrow. But, by isolating and enriching hematopoietic stem cells, the team can decipher the full cellular diversity of the cells’ bone marrow counterparts.

“This revelation opened the doors to study, at single-cell resolution, how stem cells are affected upon infection and vaccination with a simple blood draw,” representatives from the Jackson lab said in a press release.

A version of this article appeared on Medscape.com.

Severe COVID infections may lead to lasting damage to the immune system, new research finds.

The small study, published in Cell and funded by the National Institutes of Health, details how immune cells were analyzed through blood samples collected from 38 patients recovering from severe COVID and other critical illnesses, and from 19 healthy people. Researchers from Weill Cornell Medicine, New York, and The Jackson Laboratory for Genomic Medicine, Farmington, Conn., found through isolating hematopoietic stem cells that people recovering from severe bouts of COVID had changes to their DNA that were passed down to offspring cells.

The research team, led by Steven Josefowicz, PhD, of Weill Cornell’s pathology department, and Duygu Ucar, PhD, associate professor at The Jackson Laboratory for Genomic Medicine, discovered that this chain reaction of stem cell changes caused a boost in the production of monocytes. The authors found that, due to the innate cellular changes from a severe case of COVID, patients in recovery ended up producing a larger amount of inflammatory cytokines, rather than monocytes – distinct from samples collected from healthy patients and those recovering from other critical illnesses.

These changes to patients’ epigenetic landscapes were observed even a year after the initial COVID-19 infection. While the small participant pool meant that the research team could not establish a direct line between these innate changes and any ensuing health outcomes, the research provides us with clues as to why patients continue to struggle with inflammation and long COVID symptoms well after they recover.

While the authors reiterate the study’s limitations and hesitate to make any clear-cut associations between the results and long-term health outcomes, Wolfgang Leitner, PhD, from the NIH’s National Institute of Allergy and Infectious Diseases, predicts that long COVID can, at least in part, be explained by the changes in innate immune responses.

“Ideally, the authors would have had cells from each patient before they got infected, as a comparator, to see what the epigenetic landscape was before COVID changed it,” said Dr. Leitner. “Clear links between the severity of COVID and genetics were discovered already early in the pandemic and this paper should prompt follow-up studies that link mutations in immune genes with the epigenetic changes described here.”

Dr. Leitner said he had some initial predictions about the long-term impact of COVID-19, but he had not anticipated some of what the study’s findings now show.

“Unlike in the case of, for example, influenza, where the lungs go into ‘repair mode’ after the infection has been resolved – which leaves people susceptible to secondary infections for up to several months – this study shows that after severe COVID, the immune system remains in ‘emergency mode’ and in a heightened state of inflammation,” said Dr. Leitner.

“That further aggravates the problem the initial strong inflammation causes: even higher risk of autoimmune disease, but also, cancer.”

Commenting on the findings, Eric Topol, MD, editor-in-chief of Medscape Medical News, said the study presents “evidence that a key line of immune cells are essentially irrevocably, epigenetically altered and activated.

“You do not want to have this [COVID],” he added.

The study also highlights the researchers’ novel approach to isolating hematopoietic stem cells, found largely in bone marrow. This type of research has been limited in the past because of how costly and invasive it can be to analyze cells in bone marrow. But, by isolating and enriching hematopoietic stem cells, the team can decipher the full cellular diversity of the cells’ bone marrow counterparts.

“This revelation opened the doors to study, at single-cell resolution, how stem cells are affected upon infection and vaccination with a simple blood draw,” representatives from the Jackson lab said in a press release.

A version of this article appeared on Medscape.com.

Severe COVID infections may lead to lasting damage to the immune system, new research finds.

The small study, published in Cell and funded by the National Institutes of Health, details how immune cells were analyzed through blood samples collected from 38 patients recovering from severe COVID and other critical illnesses, and from 19 healthy people. Researchers from Weill Cornell Medicine, New York, and The Jackson Laboratory for Genomic Medicine, Farmington, Conn., found through isolating hematopoietic stem cells that people recovering from severe bouts of COVID had changes to their DNA that were passed down to offspring cells.

The research team, led by Steven Josefowicz, PhD, of Weill Cornell’s pathology department, and Duygu Ucar, PhD, associate professor at The Jackson Laboratory for Genomic Medicine, discovered that this chain reaction of stem cell changes caused a boost in the production of monocytes. The authors found that, due to the innate cellular changes from a severe case of COVID, patients in recovery ended up producing a larger amount of inflammatory cytokines, rather than monocytes – distinct from samples collected from healthy patients and those recovering from other critical illnesses.

These changes to patients’ epigenetic landscapes were observed even a year after the initial COVID-19 infection. While the small participant pool meant that the research team could not establish a direct line between these innate changes and any ensuing health outcomes, the research provides us with clues as to why patients continue to struggle with inflammation and long COVID symptoms well after they recover.

While the authors reiterate the study’s limitations and hesitate to make any clear-cut associations between the results and long-term health outcomes, Wolfgang Leitner, PhD, from the NIH’s National Institute of Allergy and Infectious Diseases, predicts that long COVID can, at least in part, be explained by the changes in innate immune responses.

“Ideally, the authors would have had cells from each patient before they got infected, as a comparator, to see what the epigenetic landscape was before COVID changed it,” said Dr. Leitner. “Clear links between the severity of COVID and genetics were discovered already early in the pandemic and this paper should prompt follow-up studies that link mutations in immune genes with the epigenetic changes described here.”

Dr. Leitner said he had some initial predictions about the long-term impact of COVID-19, but he had not anticipated some of what the study’s findings now show.

“Unlike in the case of, for example, influenza, where the lungs go into ‘repair mode’ after the infection has been resolved – which leaves people susceptible to secondary infections for up to several months – this study shows that after severe COVID, the immune system remains in ‘emergency mode’ and in a heightened state of inflammation,” said Dr. Leitner.

“That further aggravates the problem the initial strong inflammation causes: even higher risk of autoimmune disease, but also, cancer.”

Commenting on the findings, Eric Topol, MD, editor-in-chief of Medscape Medical News, said the study presents “evidence that a key line of immune cells are essentially irrevocably, epigenetically altered and activated.

“You do not want to have this [COVID],” he added.

The study also highlights the researchers’ novel approach to isolating hematopoietic stem cells, found largely in bone marrow. This type of research has been limited in the past because of how costly and invasive it can be to analyze cells in bone marrow. But, by isolating and enriching hematopoietic stem cells, the team can decipher the full cellular diversity of the cells’ bone marrow counterparts.

“This revelation opened the doors to study, at single-cell resolution, how stem cells are affected upon infection and vaccination with a simple blood draw,” representatives from the Jackson lab said in a press release.

A version of this article appeared on Medscape.com.

Those who run Taylor Swift’s Eras Tour have something in common with those who run ERAS, the Electronic Residency Application Service. They cause agita to the people they purport to serve.

Most medical students won’t see Taylor Swift perform her hit song “Cruel Summer,” but they will spend thousands of dollars on ERAS as they prepare for the 2024 residency match. Medical students applying for residency tend to be as stressed out as Swifties trying to score concert tickets. Aside from the expenses of residency applications, students also face an increasingly complex application process: a match algorithm many of them do not understand and major changes to the application process that most learn about right before the application cycle begins.

I have gone through two matches myself, one for internal medicine and one for neurology, and I have also guided students through the process for almost a decade as a dean of student affairs at a medical school. Every summer, the application process is filled with numerous changes, often with little, if any, warning for the students. One year, for example, a specialty required additional essays tailored to each program. Though this requirement may have helped programs discern which students are most enthusiastic about their programs, it also disadvantaged students working on busier rotations, strapped for time to write as many as 70 additional essays in a matter of weeks.

Other recent changes have included “signaling” programs, selecting preferred regions, and preinterview recordings for some specialties. In 2023, students cannot include more than 10 activities on their ERAS application. I have spoken to students at numerous medical schools concerned about the difficulty of selecting 10 activities out of dozens of meaningful pursuits throughout their journeys; this challenge is particularly acute for students who had other careers before entering medical school.

The stress continues to mount even after residency applications have been submitted. Students often feel tied to their phones because offers for residency interviews roll in day and night by email, and if they wait more than a few hours to respond, they’re often moved to a waiting list for their preferred interview date. One year, while we were rounding on patients, a student stepped away to schedule an interview; while doing so, he missed out on managing a patient who developed a neurologic emergency. Thankfully, many but not all specialties have put rules in place to allow students more time to think through interview offers. Having more time to think, even if it’s just 48 hours, may decrease stress, limit the negative impacts on medical education, and promote informed decisions during interview season.

To be sure, most changes are being made in an effort to improve the experience of the students and programs. But as with anything, the result has been a mix of good and bad. The transition to virtual interviews allowed students to apply more broadly to programs without worrying about travel costs. The move also benefits students with disabilities who face accessibility and other challenges with traveling. However, virtual interviews came with several downsides, including but not limited to an increased number of applications submitted (recall that this was also a benefit), interview hoarding, and challenges of connecting personally via virtual platform. Despite the virtual format, applicants increasingly are doing in-person second looks, which some worry may give those applicants an additional advantage over applicants who do not have the time or financial resources to travel for a second look. Despite these shortcomings, it is important that virtual interviews remain an option for those applicants who need it.

Another change, which has been extensively debated in medical education in recent years, was the switch to pass/fail on the USMLE Step 1 exam. Though this move decreased the stress students experienced in the first 2 years of medical school, it has resulted in a new challenge as many residency programs put more emphasis on USMLE Step 2. Many medical students feel they do not have a good gauge of their competitiveness until a few weeks before they submit their application, particularly those applicants attending medical schools that do not provide them with information regarding their class standing until right before they submit their applications.

By the time Swift’s Eras Tour ends in the summer of 2024, medical students will already have matched and started their residency programs. At the same time, a new batch of students will be entering the next year’s match. Though the number of anticipated changes may not reach the level of seismic activity caused by the Swifties at her Seattle concert, many medical students fear that the changes may be just like tectonic plates shifting the match process away from its original purpose: to provide an orderly and fair mechanism for matching the preferences of applicants for U.S. residency positions with the preferences of residency program directors.

Dr. Etienne is with WMCHealth Good Samaritan Hospital, New York, and New York Medical College. He disclosed no relevant conflicts of interest.

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

Those who run Taylor Swift’s Eras Tour have something in common with those who run ERAS, the Electronic Residency Application Service. They cause agita to the people they purport to serve.

Most medical students won’t see Taylor Swift perform her hit song “Cruel Summer,” but they will spend thousands of dollars on ERAS as they prepare for the 2024 residency match. Medical students applying for residency tend to be as stressed out as Swifties trying to score concert tickets. Aside from the expenses of residency applications, students also face an increasingly complex application process: a match algorithm many of them do not understand and major changes to the application process that most learn about right before the application cycle begins.

I have gone through two matches myself, one for internal medicine and one for neurology, and I have also guided students through the process for almost a decade as a dean of student affairs at a medical school. Every summer, the application process is filled with numerous changes, often with little, if any, warning for the students. One year, for example, a specialty required additional essays tailored to each program. Though this requirement may have helped programs discern which students are most enthusiastic about their programs, it also disadvantaged students working on busier rotations, strapped for time to write as many as 70 additional essays in a matter of weeks.

Other recent changes have included “signaling” programs, selecting preferred regions, and preinterview recordings for some specialties. In 2023, students cannot include more than 10 activities on their ERAS application. I have spoken to students at numerous medical schools concerned about the difficulty of selecting 10 activities out of dozens of meaningful pursuits throughout their journeys; this challenge is particularly acute for students who had other careers before entering medical school.

The stress continues to mount even after residency applications have been submitted. Students often feel tied to their phones because offers for residency interviews roll in day and night by email, and if they wait more than a few hours to respond, they’re often moved to a waiting list for their preferred interview date. One year, while we were rounding on patients, a student stepped away to schedule an interview; while doing so, he missed out on managing a patient who developed a neurologic emergency. Thankfully, many but not all specialties have put rules in place to allow students more time to think through interview offers. Having more time to think, even if it’s just 48 hours, may decrease stress, limit the negative impacts on medical education, and promote informed decisions during interview season.

To be sure, most changes are being made in an effort to improve the experience of the students and programs. But as with anything, the result has been a mix of good and bad. The transition to virtual interviews allowed students to apply more broadly to programs without worrying about travel costs. The move also benefits students with disabilities who face accessibility and other challenges with traveling. However, virtual interviews came with several downsides, including but not limited to an increased number of applications submitted (recall that this was also a benefit), interview hoarding, and challenges of connecting personally via virtual platform. Despite the virtual format, applicants increasingly are doing in-person second looks, which some worry may give those applicants an additional advantage over applicants who do not have the time or financial resources to travel for a second look. Despite these shortcomings, it is important that virtual interviews remain an option for those applicants who need it.

Another change, which has been extensively debated in medical education in recent years, was the switch to pass/fail on the USMLE Step 1 exam. Though this move decreased the stress students experienced in the first 2 years of medical school, it has resulted in a new challenge as many residency programs put more emphasis on USMLE Step 2. Many medical students feel they do not have a good gauge of their competitiveness until a few weeks before they submit their application, particularly those applicants attending medical schools that do not provide them with information regarding their class standing until right before they submit their applications.

By the time Swift’s Eras Tour ends in the summer of 2024, medical students will already have matched and started their residency programs. At the same time, a new batch of students will be entering the next year’s match. Though the number of anticipated changes may not reach the level of seismic activity caused by the Swifties at her Seattle concert, many medical students fear that the changes may be just like tectonic plates shifting the match process away from its original purpose: to provide an orderly and fair mechanism for matching the preferences of applicants for U.S. residency positions with the preferences of residency program directors.

Dr. Etienne is with WMCHealth Good Samaritan Hospital, New York, and New York Medical College. He disclosed no relevant conflicts of interest.

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

Those who run Taylor Swift’s Eras Tour have something in common with those who run ERAS, the Electronic Residency Application Service. They cause agita to the people they purport to serve.

Most medical students won’t see Taylor Swift perform her hit song “Cruel Summer,” but they will spend thousands of dollars on ERAS as they prepare for the 2024 residency match. Medical students applying for residency tend to be as stressed out as Swifties trying to score concert tickets. Aside from the expenses of residency applications, students also face an increasingly complex application process: a match algorithm many of them do not understand and major changes to the application process that most learn about right before the application cycle begins.

I have gone through two matches myself, one for internal medicine and one for neurology, and I have also guided students through the process for almost a decade as a dean of student affairs at a medical school. Every summer, the application process is filled with numerous changes, often with little, if any, warning for the students. One year, for example, a specialty required additional essays tailored to each program. Though this requirement may have helped programs discern which students are most enthusiastic about their programs, it also disadvantaged students working on busier rotations, strapped for time to write as many as 70 additional essays in a matter of weeks.

Other recent changes have included “signaling” programs, selecting preferred regions, and preinterview recordings for some specialties. In 2023, students cannot include more than 10 activities on their ERAS application. I have spoken to students at numerous medical schools concerned about the difficulty of selecting 10 activities out of dozens of meaningful pursuits throughout their journeys; this challenge is particularly acute for students who had other careers before entering medical school.

The stress continues to mount even after residency applications have been submitted. Students often feel tied to their phones because offers for residency interviews roll in day and night by email, and if they wait more than a few hours to respond, they’re often moved to a waiting list for their preferred interview date. One year, while we were rounding on patients, a student stepped away to schedule an interview; while doing so, he missed out on managing a patient who developed a neurologic emergency. Thankfully, many but not all specialties have put rules in place to allow students more time to think through interview offers. Having more time to think, even if it’s just 48 hours, may decrease stress, limit the negative impacts on medical education, and promote informed decisions during interview season.

To be sure, most changes are being made in an effort to improve the experience of the students and programs. But as with anything, the result has been a mix of good and bad. The transition to virtual interviews allowed students to apply more broadly to programs without worrying about travel costs. The move also benefits students with disabilities who face accessibility and other challenges with traveling. However, virtual interviews came with several downsides, including but not limited to an increased number of applications submitted (recall that this was also a benefit), interview hoarding, and challenges of connecting personally via virtual platform. Despite the virtual format, applicants increasingly are doing in-person second looks, which some worry may give those applicants an additional advantage over applicants who do not have the time or financial resources to travel for a second look. Despite these shortcomings, it is important that virtual interviews remain an option for those applicants who need it.

Another change, which has been extensively debated in medical education in recent years, was the switch to pass/fail on the USMLE Step 1 exam. Though this move decreased the stress students experienced in the first 2 years of medical school, it has resulted in a new challenge as many residency programs put more emphasis on USMLE Step 2. Many medical students feel they do not have a good gauge of their competitiveness until a few weeks before they submit their application, particularly those applicants attending medical schools that do not provide them with information regarding their class standing until right before they submit their applications.

By the time Swift’s Eras Tour ends in the summer of 2024, medical students will already have matched and started their residency programs. At the same time, a new batch of students will be entering the next year’s match. Though the number of anticipated changes may not reach the level of seismic activity caused by the Swifties at her Seattle concert, many medical students fear that the changes may be just like tectonic plates shifting the match process away from its original purpose: to provide an orderly and fair mechanism for matching the preferences of applicants for U.S. residency positions with the preferences of residency program directors.

Dr. Etienne is with WMCHealth Good Samaritan Hospital, New York, and New York Medical College. He disclosed no relevant conflicts of interest.

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

A lot of businesses benefit from being in private equity funds.

Health care isn’t one of them, and a recent report found that private equity buyouts of medical practices resulted in higher consumer prices.

This really shouldn’t surprise anyone. Such funds may offer glittering phrases like “improved technology” and “greater efficiency” but the bottom line is that they’re run by – and for – the shareholders. The majority of them aren’t going to be medical people or realize that you can’t run a medical practice like it’s a clothing retailer or electronic car manufacturer.

I’m not saying medicine isn’t a business – it is. I depend on my little practice to support three families, so keeping it in the black is important. But it also needs to run well to do that. Measures to increase revenue, like cutting my staff down (there are only two of them) or overbooking patients would seriously impact me effectively doing my part, which is playing doctor.

You can predict pretty accurately how long it will take to put a motor and bumper assembly on a specific model of car, but you can’t do that in medicine because people aren’t standardized. Even if you control variables such as same sex, age, and diagnosis, personalities vary widely, as do treatment decisions, questions they’ll have, and the “oh, another thing” factor.

That doesn’t happen at a bottling plant.

In the business model of health care, you’re hoping revenue will pay overhead and a reasonable salary for everyone. But when you add a private equity firm in, the shareholders also expect to be paid. Which means either revenue has to go up significantly, or costs have to be cut (layoffs, short staffing, reduced benefits, etc.), or a combination of both.

Regardless of which option is chosen, it isn’t good for the medical staff or the patients. Increasing the number of people seen in a given amount of time per doctor may be good for the shareholders, but it’s not good for the doctor or the person being cared for. Think of Lucy and Ethyl at the chocolate factory.

Even in an auto factory, if you speed up the rate of cars going through the assembly line, sooner or later mistakes will be made. Humans can’t keep up, and even robots will make errors if things aren’t aligned correctly, or are a few seconds ahead or behind the program. This is why they (hopefully) have quality control, to try and catch those things before they’re on the road.

Of course, cars are more easily fixable. When the mistake is found you repair or replace the part. You can’t do that as easily in people, and when serious mistakes happen it’s the doctor who’s held at fault – not the shareholders who pressured him or her to see patients faster and with less support.

Unfortunately, this is the way the current trend is going. The more people who are involved in the practice of medicine, in person or behind the scenes, the smaller each slice of the pie gets.

That’s not good for the patient, who’s the person at the center of it all and the reason why we’re here.

Dr. Block has a solo neurology practice in Scottsdale, Ariz.

A lot of businesses benefit from being in private equity funds.

Health care isn’t one of them, and a recent report found that private equity buyouts of medical practices resulted in higher consumer prices.

This really shouldn’t surprise anyone. Such funds may offer glittering phrases like “improved technology” and “greater efficiency” but the bottom line is that they’re run by – and for – the shareholders. The majority of them aren’t going to be medical people or realize that you can’t run a medical practice like it’s a clothing retailer or electronic car manufacturer.

I’m not saying medicine isn’t a business – it is. I depend on my little practice to support three families, so keeping it in the black is important. But it also needs to run well to do that. Measures to increase revenue, like cutting my staff down (there are only two of them) or overbooking patients would seriously impact me effectively doing my part, which is playing doctor.

You can predict pretty accurately how long it will take to put a motor and bumper assembly on a specific model of car, but you can’t do that in medicine because people aren’t standardized. Even if you control variables such as same sex, age, and diagnosis, personalities vary widely, as do treatment decisions, questions they’ll have, and the “oh, another thing” factor.

That doesn’t happen at a bottling plant.

In the business model of health care, you’re hoping revenue will pay overhead and a reasonable salary for everyone. But when you add a private equity firm in, the shareholders also expect to be paid. Which means either revenue has to go up significantly, or costs have to be cut (layoffs, short staffing, reduced benefits, etc.), or a combination of both.

Regardless of which option is chosen, it isn’t good for the medical staff or the patients. Increasing the number of people seen in a given amount of time per doctor may be good for the shareholders, but it’s not good for the doctor or the person being cared for. Think of Lucy and Ethyl at the chocolate factory.

Even in an auto factory, if you speed up the rate of cars going through the assembly line, sooner or later mistakes will be made. Humans can’t keep up, and even robots will make errors if things aren’t aligned correctly, or are a few seconds ahead or behind the program. This is why they (hopefully) have quality control, to try and catch those things before they’re on the road.

Of course, cars are more easily fixable. When the mistake is found you repair or replace the part. You can’t do that as easily in people, and when serious mistakes happen it’s the doctor who’s held at fault – not the shareholders who pressured him or her to see patients faster and with less support.

Unfortunately, this is the way the current trend is going. The more people who are involved in the practice of medicine, in person or behind the scenes, the smaller each slice of the pie gets.

That’s not good for the patient, who’s the person at the center of it all and the reason why we’re here.

Dr. Block has a solo neurology practice in Scottsdale, Ariz.

A lot of businesses benefit from being in private equity funds.

Health care isn’t one of them, and a recent report found that private equity buyouts of medical practices resulted in higher consumer prices.

This really shouldn’t surprise anyone. Such funds may offer glittering phrases like “improved technology” and “greater efficiency” but the bottom line is that they’re run by – and for – the shareholders. The majority of them aren’t going to be medical people or realize that you can’t run a medical practice like it’s a clothing retailer or electronic car manufacturer.

I’m not saying medicine isn’t a business – it is. I depend on my little practice to support three families, so keeping it in the black is important. But it also needs to run well to do that. Measures to increase revenue, like cutting my staff down (there are only two of them) or overbooking patients would seriously impact me effectively doing my part, which is playing doctor.

You can predict pretty accurately how long it will take to put a motor and bumper assembly on a specific model of car, but you can’t do that in medicine because people aren’t standardized. Even if you control variables such as same sex, age, and diagnosis, personalities vary widely, as do treatment decisions, questions they’ll have, and the “oh, another thing” factor.

That doesn’t happen at a bottling plant.

In the business model of health care, you’re hoping revenue will pay overhead and a reasonable salary for everyone. But when you add a private equity firm in, the shareholders also expect to be paid. Which means either revenue has to go up significantly, or costs have to be cut (layoffs, short staffing, reduced benefits, etc.), or a combination of both.

Regardless of which option is chosen, it isn’t good for the medical staff or the patients. Increasing the number of people seen in a given amount of time per doctor may be good for the shareholders, but it’s not good for the doctor or the person being cared for. Think of Lucy and Ethyl at the chocolate factory.

Even in an auto factory, if you speed up the rate of cars going through the assembly line, sooner or later mistakes will be made. Humans can’t keep up, and even robots will make errors if things aren’t aligned correctly, or are a few seconds ahead or behind the program. This is why they (hopefully) have quality control, to try and catch those things before they’re on the road.

Of course, cars are more easily fixable. When the mistake is found you repair or replace the part. You can’t do that as easily in people, and when serious mistakes happen it’s the doctor who’s held at fault – not the shareholders who pressured him or her to see patients faster and with less support.

Unfortunately, this is the way the current trend is going. The more people who are involved in the practice of medicine, in person or behind the scenes, the smaller each slice of the pie gets.

That’s not good for the patient, who’s the person at the center of it all and the reason why we’re here.

Dr. Block has a solo neurology practice in Scottsdale, Ariz.

It’s been estimated that up to one-third of people who survive acute SARS-CoV-2 infection will suffer a post-viral syndrome with lingering neurologic and other symptoms – now known as long COVID or neurological postacute sequelae of SARS-CoV-2 infection (Neuro-PASC).

However, new research suggests that may be an underestimate and that far more people may be suffering from long COVID without ever having tested positive for the virus. Researchers found a significant proportion of patients in their small study who had never tested positive for COVID-19 but who were having symptoms of long COVID nevertheless showed evidence of immune responses consistent with previous exposure.

“We estimate that millions of people got COVID in the U.S. during the first year of the pandemic and then developed long COVID, yet they did not get a positive COVID diagnosis because of testing limitations,” Igor J. Koralnik, MD, of Northwestern Medicine Comprehensive COVID-19 Center in Chicago, said in an interview.

He noted that many post-COVID-19 clinics in the United States don’t accept people with long COVID symptoms who do not have a positive test result.

Patients with long COVID symptoms but without laboratory evidence of prior infection, “who have often been rejected and stigmatized, should feel vindicated by the results of our study,” Dr. Koralnik said.

“We think that those patients deserve the same clinical care as those with a positive test, as well as inclusion in research studies. This is what we are doing at Northwestern Medicine’s Comprehensive COVID[-19] Center,” Dr. Koralnik added.

The study was published online in the journal Neurology: Neuroimmunology & Neuroinflammation.

Delayed care

The researchers measured SARS-CoV-2-specific humoral and cell-mediated immune responses against nucleocapsid protein and spike proteins, which indicate a prior COVID-19 infection, in 29 patients with post-viral syndrome after suspected COVID-19, including neurologic symptoms such as cognitive impairment, headache, and fatigue, but who did not have a confirmed positive COVID-19 test.

They did the same in 32 age- and sex-matched COVID long haulers with confirmed Neuro-PASC and 18 healthy controls with none of the symptoms of long COVID and no known exposure to SARS-CoV-2 or positive test result.

They found that 12 of the 29 patients (41%) with post-viral syndrome (but no positive COVID-19 test) had detectable humoral and cellular immune responses consistent with prior exposure to SARS-CoV-2. Three-quarters harbored antinucleocapsid and 50% harbored antispike responses.

“Our data suggest that at least 4 million people with post-viral syndrome similar to long COVID may indeed have detectable immune responses to support a COVID diagnosis,” Dr. Koralnik said in a news release.

The 12 patients with post-viral syndrome but without a confirmed COVID-19 test had neurologic symptoms similar to those of patients with confirmed Neuro-PASC.

However, lack of a confirmed COVID-19 diagnosis likely contributed to the 5-month delay in the median time from symptom onset to clinic visit, the researchers said. They were evaluated at a median of 10.7 months vs. 5.4 months for Neuro-PASC patients.

Dr. Koralnik said in an interview that the “most important take-home message” of the study is that patients with post-viral syndrome often present with clinical manifestations similar to those of confirmed patients with Neuro-PASC, suggesting that a positive result by commercially available SARS-CoV-2 diagnostic test should not be a prerequisite for accessing care.

Patients with post-viral syndrome may benefit from the same clinical care as confirmed patients with Neuro-PASC, and the absence of a positive SARS-CoV-2 test should not preclude or delay treatment, he added.
 

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

This article was updated 8/28/23.

It’s been estimated that up to one-third of people who survive acute SARS-CoV-2 infection will suffer a post-viral syndrome with lingering neurologic and other symptoms – now known as long COVID or neurological postacute sequelae of SARS-CoV-2 infection (Neuro-PASC).

However, new research suggests that may be an underestimate and that far more people may be suffering from long COVID without ever having tested positive for the virus. Researchers found a significant proportion of patients in their small study who had never tested positive for COVID-19 but who were having symptoms of long COVID nevertheless showed evidence of immune responses consistent with previous exposure.

“We estimate that millions of people got COVID in the U.S. during the first year of the pandemic and then developed long COVID, yet they did not get a positive COVID diagnosis because of testing limitations,” Igor J. Koralnik, MD, of Northwestern Medicine Comprehensive COVID-19 Center in Chicago, said in an interview.

He noted that many post-COVID-19 clinics in the United States don’t accept people with long COVID symptoms who do not have a positive test result.

Patients with long COVID symptoms but without laboratory evidence of prior infection, “who have often been rejected and stigmatized, should feel vindicated by the results of our study,” Dr. Koralnik said.

“We think that those patients deserve the same clinical care as those with a positive test, as well as inclusion in research studies. This is what we are doing at Northwestern Medicine’s Comprehensive COVID[-19] Center,” Dr. Koralnik added.

The study was published online in the journal Neurology: Neuroimmunology & Neuroinflammation.

Delayed care

The researchers measured SARS-CoV-2-specific humoral and cell-mediated immune responses against nucleocapsid protein and spike proteins, which indicate a prior COVID-19 infection, in 29 patients with post-viral syndrome after suspected COVID-19, including neurologic symptoms such as cognitive impairment, headache, and fatigue, but who did not have a confirmed positive COVID-19 test.

They did the same in 32 age- and sex-matched COVID long haulers with confirmed Neuro-PASC and 18 healthy controls with none of the symptoms of long COVID and no known exposure to SARS-CoV-2 or positive test result.

They found that 12 of the 29 patients (41%) with post-viral syndrome (but no positive COVID-19 test) had detectable humoral and cellular immune responses consistent with prior exposure to SARS-CoV-2. Three-quarters harbored antinucleocapsid and 50% harbored antispike responses.

“Our data suggest that at least 4 million people with post-viral syndrome similar to long COVID may indeed have detectable immune responses to support a COVID diagnosis,” Dr. Koralnik said in a news release.

The 12 patients with post-viral syndrome but without a confirmed COVID-19 test had neurologic symptoms similar to those of patients with confirmed Neuro-PASC.

However, lack of a confirmed COVID-19 diagnosis likely contributed to the 5-month delay in the median time from symptom onset to clinic visit, the researchers said. They were evaluated at a median of 10.7 months vs. 5.4 months for Neuro-PASC patients.

Dr. Koralnik said in an interview that the “most important take-home message” of the study is that patients with post-viral syndrome often present with clinical manifestations similar to those of confirmed patients with Neuro-PASC, suggesting that a positive result by commercially available SARS-CoV-2 diagnostic test should not be a prerequisite for accessing care.

Patients with post-viral syndrome may benefit from the same clinical care as confirmed patients with Neuro-PASC, and the absence of a positive SARS-CoV-2 test should not preclude or delay treatment, he added.
 

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

This article was updated 8/28/23.

It’s been estimated that up to one-third of people who survive acute SARS-CoV-2 infection will suffer a post-viral syndrome with lingering neurologic and other symptoms – now known as long COVID or neurological postacute sequelae of SARS-CoV-2 infection (Neuro-PASC).

However, new research suggests that may be an underestimate and that far more people may be suffering from long COVID without ever having tested positive for the virus. Researchers found a significant proportion of patients in their small study who had never tested positive for COVID-19 but who were having symptoms of long COVID nevertheless showed evidence of immune responses consistent with previous exposure.

“We estimate that millions of people got COVID in the U.S. during the first year of the pandemic and then developed long COVID, yet they did not get a positive COVID diagnosis because of testing limitations,” Igor J. Koralnik, MD, of Northwestern Medicine Comprehensive COVID-19 Center in Chicago, said in an interview.

He noted that many post-COVID-19 clinics in the United States don’t accept people with long COVID symptoms who do not have a positive test result.

Patients with long COVID symptoms but without laboratory evidence of prior infection, “who have often been rejected and stigmatized, should feel vindicated by the results of our study,” Dr. Koralnik said.

“We think that those patients deserve the same clinical care as those with a positive test, as well as inclusion in research studies. This is what we are doing at Northwestern Medicine’s Comprehensive COVID[-19] Center,” Dr. Koralnik added.

The study was published online in the journal Neurology: Neuroimmunology & Neuroinflammation.

Delayed care

The researchers measured SARS-CoV-2-specific humoral and cell-mediated immune responses against nucleocapsid protein and spike proteins, which indicate a prior COVID-19 infection, in 29 patients with post-viral syndrome after suspected COVID-19, including neurologic symptoms such as cognitive impairment, headache, and fatigue, but who did not have a confirmed positive COVID-19 test.

They did the same in 32 age- and sex-matched COVID long haulers with confirmed Neuro-PASC and 18 healthy controls with none of the symptoms of long COVID and no known exposure to SARS-CoV-2 or positive test result.

They found that 12 of the 29 patients (41%) with post-viral syndrome (but no positive COVID-19 test) had detectable humoral and cellular immune responses consistent with prior exposure to SARS-CoV-2. Three-quarters harbored antinucleocapsid and 50% harbored antispike responses.

“Our data suggest that at least 4 million people with post-viral syndrome similar to long COVID may indeed have detectable immune responses to support a COVID diagnosis,” Dr. Koralnik said in a news release.

The 12 patients with post-viral syndrome but without a confirmed COVID-19 test had neurologic symptoms similar to those of patients with confirmed Neuro-PASC.

However, lack of a confirmed COVID-19 diagnosis likely contributed to the 5-month delay in the median time from symptom onset to clinic visit, the researchers said. They were evaluated at a median of 10.7 months vs. 5.4 months for Neuro-PASC patients.

Dr. Koralnik said in an interview that the “most important take-home message” of the study is that patients with post-viral syndrome often present with clinical manifestations similar to those of confirmed patients with Neuro-PASC, suggesting that a positive result by commercially available SARS-CoV-2 diagnostic test should not be a prerequisite for accessing care.

Patients with post-viral syndrome may benefit from the same clinical care as confirmed patients with Neuro-PASC, and the absence of a positive SARS-CoV-2 test should not preclude or delay treatment, he added.
 

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

This article was updated 8/28/23.

A consumer watchdog group is pressing for broader public access to a confidential federal database that tracks disciplinary records for physicians in a new report, arguing that extra public scrutiny could pressure state medical boards to be more aggressive watchdogs.

Public Citizen’s report includes an analysis of how frequently medical boards sanctioned physicians in 2019, 2020, and 2021. These sanctions include license revocations, suspensions, voluntary surrenders of licenses, and limitations on practice while under investigation.

The report used data from the National Practitioner Data Bank (NPDB), a federal repository of reports about state licensure, discipline, and certification actions as well as medical malpractice payments. The database is closed to the public, but hospitals, malpractice insurers, and investigators can query it.

According to Public Citizen’s calculations, states most likely to take serious disciplinary action against physicians were:

• Michigan: 1.74 serious disciplinary actions per 1,000 physicians per year
• Ohio: 1.61
• North Dakota: 1.60
• Colorado: 1.55
• Arizona: 1.53
• The states least likely to do so were:
• Nevada: 0.24 serious disciplinary actions per 1,000 physicians per year
• New Hampshire: 0.25
• Georgia: 0.27
• Indiana: 0.28
• Nebraska: 0.32
• California, the largest U.S. state by both population and number of physicians, landed near the middle, ranking 27th with a rate of 0.83 serious actions per 1,000 physicians, Public Citizen said.

“There is no evidence that physicians in any state are, overall, more or less likely to be incompetent or miscreant than the physicians in any other state,” said Robert Oshel, PhD, a former NPDB associate director for research and an author of the report.

The differences instead reflect variations in boards’ enforcement of medical practice laws, domination of licensing boards by physicians, and inadequate budgets, he noted.

Public Citizen said Congress should change federal law to let members of the public get information from the NPDB to do a background check on physicians whom they are considering seeing or are already seeing. This would not only help individuals but also would spur state licensing boards to do their own checks with the NPDB, the group said.

“If licensing boards routinely queried the NPDB, they would not be faulted by the public and state legislators for not knowing about malpractice payments or disciplinary actions affecting their licensees and therefore not taking reasonable actions concerning their licensees found to have poor records,” the report said.
 

Questioning NPDB access for consumers

Michelle Mello, JD, PhD, a professor of law and health policy at Stanford (Calif.) University, has studied the current applications of the NPDB. In 2019, she published an article in The New England Journal of Medicine examining changes in practice patterns for clinicians who faced multiple malpractice claims.

Dr. Mello questioned what benefit consumers would get from direct access to the NPDB’s information.

“It provides almost no context for the information it reports, making it even harder for patients to make sense of what they see there,” Dr. Mello said in an interview.

Hospitals are already required to routinely query the NPDB. This legal requirement should be expanded to include licensing boards, which the report called “the last line of defense for the public from incompetent and miscreant physicians,” Public Citizen said.

“Ideally, this amendment should include free continuous query access by medical boards for all their licensees,” the report said. “In the absence of any action by Congress, individual state legislatures should require their licensing boards to query all their licensees or enroll in continuous query, as a few states already do.”

The Federation of State Medical Boards agreed with some of the other suggestions Public Citizen offered in the report. The two concur on the need for increased funding to state medical boards to ensure that they have adequate resources and staffing to fulfill their duties, FSMB said in a statement.

But FSMB disagreed with Public Citizens’ approach to ranking boards, saying it could mislead. The report lacks context about how boards’ funding and authority vary, Humayun Chaudhry, DO, FSMB’s chief executive officer, said. He also questioned the decision to focus only on serious disciplinary actions.

“The Public Citizen report does not take into account the wide range of disciplinary steps boards can take such as letters of reprimand or fines, which are often enough to stop problem behaviors – preempting further problems in the future,” Dr. Chaudhry said.
 

D.C. gets worst rating

The District of Columbia earned the worst mark in the Public Citizen ranking, holding the 51st spot, the same place it held in the group’s similar ranking on actions taken in the 2017-2019 period. There were 0.19 serious disciplinary actions per 1,000 physicians a year in Washington, Public Citizen said.

In an email to this news organization, Dr. Oshel said that the Public Citizen analysis focused on the number of licensed physicians in each state and D.C. that can be obtained and compared reliably. It avoided using the term “practicing physicians” owing in part to doubts about the reliability of these counts, he said.

As many as 20% of physicians nationwide are focused primarily on work outside of clinical care, Dr. Oshel estimated. In D.C., perhaps 40% of physicians may fall into this category. Of the more than 13,700 physicians licensed in D.C., there may be only about 8,126 actively practicing, according to Dr. Oshel.

But even using that lower estimate of practicing physicians would only raise D.C.’s ranking to 46, signaling a need for stepped-up enforcement, Dr. Oshel said.

“[Whether it’s] 46th or 51st, both are bad,” Dr. Oshel said.

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

A consumer watchdog group is pressing for broader public access to a confidential federal database that tracks disciplinary records for physicians in a new report, arguing that extra public scrutiny could pressure state medical boards to be more aggressive watchdogs.

Public Citizen’s report includes an analysis of how frequently medical boards sanctioned physicians in 2019, 2020, and 2021. These sanctions include license revocations, suspensions, voluntary surrenders of licenses, and limitations on practice while under investigation.

The report used data from the National Practitioner Data Bank (NPDB), a federal repository of reports about state licensure, discipline, and certification actions as well as medical malpractice payments. The database is closed to the public, but hospitals, malpractice insurers, and investigators can query it.

According to Public Citizen’s calculations, states most likely to take serious disciplinary action against physicians were:

• Michigan: 1.74 serious disciplinary actions per 1,000 physicians per year
• Ohio: 1.61
• North Dakota: 1.60
• Colorado: 1.55
• Arizona: 1.53
• The states least likely to do so were:
• Nevada: 0.24 serious disciplinary actions per 1,000 physicians per year
• New Hampshire: 0.25
• Georgia: 0.27
• Indiana: 0.28
• Nebraska: 0.32
• California, the largest U.S. state by both population and number of physicians, landed near the middle, ranking 27th with a rate of 0.83 serious actions per 1,000 physicians, Public Citizen said.

“There is no evidence that physicians in any state are, overall, more or less likely to be incompetent or miscreant than the physicians in any other state,” said Robert Oshel, PhD, a former NPDB associate director for research and an author of the report.

The differences instead reflect variations in boards’ enforcement of medical practice laws, domination of licensing boards by physicians, and inadequate budgets, he noted.

Public Citizen said Congress should change federal law to let members of the public get information from the NPDB to do a background check on physicians whom they are considering seeing or are already seeing. This would not only help individuals but also would spur state licensing boards to do their own checks with the NPDB, the group said.

“If licensing boards routinely queried the NPDB, they would not be faulted by the public and state legislators for not knowing about malpractice payments or disciplinary actions affecting their licensees and therefore not taking reasonable actions concerning their licensees found to have poor records,” the report said.
 

Questioning NPDB access for consumers

Michelle Mello, JD, PhD, a professor of law and health policy at Stanford (Calif.) University, has studied the current applications of the NPDB. In 2019, she published an article in The New England Journal of Medicine examining changes in practice patterns for clinicians who faced multiple malpractice claims.

Dr. Mello questioned what benefit consumers would get from direct access to the NPDB’s information.

“It provides almost no context for the information it reports, making it even harder for patients to make sense of what they see there,” Dr. Mello said in an interview.

Hospitals are already required to routinely query the NPDB. This legal requirement should be expanded to include licensing boards, which the report called “the last line of defense for the public from incompetent and miscreant physicians,” Public Citizen said.

“Ideally, this amendment should include free continuous query access by medical boards for all their licensees,” the report said. “In the absence of any action by Congress, individual state legislatures should require their licensing boards to query all their licensees or enroll in continuous query, as a few states already do.”

The Federation of State Medical Boards agreed with some of the other suggestions Public Citizen offered in the report. The two concur on the need for increased funding to state medical boards to ensure that they have adequate resources and staffing to fulfill their duties, FSMB said in a statement.

But FSMB disagreed with Public Citizens’ approach to ranking boards, saying it could mislead. The report lacks context about how boards’ funding and authority vary, Humayun Chaudhry, DO, FSMB’s chief executive officer, said. He also questioned the decision to focus only on serious disciplinary actions.

“The Public Citizen report does not take into account the wide range of disciplinary steps boards can take such as letters of reprimand or fines, which are often enough to stop problem behaviors – preempting further problems in the future,” Dr. Chaudhry said.
 

D.C. gets worst rating

The District of Columbia earned the worst mark in the Public Citizen ranking, holding the 51st spot, the same place it held in the group’s similar ranking on actions taken in the 2017-2019 period. There were 0.19 serious disciplinary actions per 1,000 physicians a year in Washington, Public Citizen said.

In an email to this news organization, Dr. Oshel said that the Public Citizen analysis focused on the number of licensed physicians in each state and D.C. that can be obtained and compared reliably. It avoided using the term “practicing physicians” owing in part to doubts about the reliability of these counts, he said.

As many as 20% of physicians nationwide are focused primarily on work outside of clinical care, Dr. Oshel estimated. In D.C., perhaps 40% of physicians may fall into this category. Of the more than 13,700 physicians licensed in D.C., there may be only about 8,126 actively practicing, according to Dr. Oshel.

But even using that lower estimate of practicing physicians would only raise D.C.’s ranking to 46, signaling a need for stepped-up enforcement, Dr. Oshel said.

“[Whether it’s] 46th or 51st, both are bad,” Dr. Oshel said.

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

A consumer watchdog group is pressing for broader public access to a confidential federal database that tracks disciplinary records for physicians in a new report, arguing that extra public scrutiny could pressure state medical boards to be more aggressive watchdogs.

Public Citizen’s report includes an analysis of how frequently medical boards sanctioned physicians in 2019, 2020, and 2021. These sanctions include license revocations, suspensions, voluntary surrenders of licenses, and limitations on practice while under investigation.

The report used data from the National Practitioner Data Bank (NPDB), a federal repository of reports about state licensure, discipline, and certification actions as well as medical malpractice payments. The database is closed to the public, but hospitals, malpractice insurers, and investigators can query it.

According to Public Citizen’s calculations, states most likely to take serious disciplinary action against physicians were:

• Michigan: 1.74 serious disciplinary actions per 1,000 physicians per year
• Ohio: 1.61
• North Dakota: 1.60
• Colorado: 1.55
• Arizona: 1.53
• The states least likely to do so were:
• Nevada: 0.24 serious disciplinary actions per 1,000 physicians per year
• New Hampshire: 0.25
• Georgia: 0.27
• Indiana: 0.28
• Nebraska: 0.32
• California, the largest U.S. state by both population and number of physicians, landed near the middle, ranking 27th with a rate of 0.83 serious actions per 1,000 physicians, Public Citizen said.

“There is no evidence that physicians in any state are, overall, more or less likely to be incompetent or miscreant than the physicians in any other state,” said Robert Oshel, PhD, a former NPDB associate director for research and an author of the report.

The differences instead reflect variations in boards’ enforcement of medical practice laws, domination of licensing boards by physicians, and inadequate budgets, he noted.

Public Citizen said Congress should change federal law to let members of the public get information from the NPDB to do a background check on physicians whom they are considering seeing or are already seeing. This would not only help individuals but also would spur state licensing boards to do their own checks with the NPDB, the group said.

“If licensing boards routinely queried the NPDB, they would not be faulted by the public and state legislators for not knowing about malpractice payments or disciplinary actions affecting their licensees and therefore not taking reasonable actions concerning their licensees found to have poor records,” the report said.
 

Questioning NPDB access for consumers

Michelle Mello, JD, PhD, a professor of law and health policy at Stanford (Calif.) University, has studied the current applications of the NPDB. In 2019, she published an article in The New England Journal of Medicine examining changes in practice patterns for clinicians who faced multiple malpractice claims.

Dr. Mello questioned what benefit consumers would get from direct access to the NPDB’s information.

“It provides almost no context for the information it reports, making it even harder for patients to make sense of what they see there,” Dr. Mello said in an interview.

Hospitals are already required to routinely query the NPDB. This legal requirement should be expanded to include licensing boards, which the report called “the last line of defense for the public from incompetent and miscreant physicians,” Public Citizen said.

“Ideally, this amendment should include free continuous query access by medical boards for all their licensees,” the report said. “In the absence of any action by Congress, individual state legislatures should require their licensing boards to query all their licensees or enroll in continuous query, as a few states already do.”

The Federation of State Medical Boards agreed with some of the other suggestions Public Citizen offered in the report. The two concur on the need for increased funding to state medical boards to ensure that they have adequate resources and staffing to fulfill their duties, FSMB said in a statement.

But FSMB disagreed with Public Citizens’ approach to ranking boards, saying it could mislead. The report lacks context about how boards’ funding and authority vary, Humayun Chaudhry, DO, FSMB’s chief executive officer, said. He also questioned the decision to focus only on serious disciplinary actions.

“The Public Citizen report does not take into account the wide range of disciplinary steps boards can take such as letters of reprimand or fines, which are often enough to stop problem behaviors – preempting further problems in the future,” Dr. Chaudhry said.
 

D.C. gets worst rating

The District of Columbia earned the worst mark in the Public Citizen ranking, holding the 51st spot, the same place it held in the group’s similar ranking on actions taken in the 2017-2019 period. There were 0.19 serious disciplinary actions per 1,000 physicians a year in Washington, Public Citizen said.

In an email to this news organization, Dr. Oshel said that the Public Citizen analysis focused on the number of licensed physicians in each state and D.C. that can be obtained and compared reliably. It avoided using the term “practicing physicians” owing in part to doubts about the reliability of these counts, he said.

As many as 20% of physicians nationwide are focused primarily on work outside of clinical care, Dr. Oshel estimated. In D.C., perhaps 40% of physicians may fall into this category. Of the more than 13,700 physicians licensed in D.C., there may be only about 8,126 actively practicing, according to Dr. Oshel.

But even using that lower estimate of practicing physicians would only raise D.C.’s ranking to 46, signaling a need for stepped-up enforcement, Dr. Oshel said.

“[Whether it’s] 46th or 51st, both are bad,” Dr. Oshel said.

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

Changes in retinal tissues known to be associated with Parkinson’s disease (PD) may occur up to 7 years before clinical symptoms of the disease appear, a new study suggests. 

Researchers used artificial intelligence (AI) to analyze data from two population-level data sets and the world’s largest database of retinal images and associated clinical data to detect the retinal changes in patients with PD and in healthy individuals who developed the disease years later. 

Prior research had shown that PD is associated with a thinning of the ganglion cell-inner plexiform layer (GCIPL) in the retina, something that investigators confirmed in this new study. But they also identified changes in the inner nuclear layer (INL), which is a new finding. 

The study is the largest to date on retinal markers in PD and the first to show these changes in living patients.

“I think we are still several years away from converting these findings into individual level prediction for patients,” lead author, Siegfried Wagner, MD, MsC, Honorary Clinical Senior Research Fellow at Moorfields Eye Hospital and University College of London Institute of Ophthalmology in London, told this news organization. “The most important takeaway is that there are observable differences in the retina of individuals who go on to develop Parkinson’s disease.”

The findings were published online in Neurology. 
 

Another look at OCT

Researchers used data from retinal eye scans taken by optical coherence tomography (OCT), a noninvasive three-dimensional imaging technology that is widely used by opticians. 

Other studies have used OCT to detect retinal changes in multiple sclerosis and cognitive decline. 

For this research, investigators identified markers in people with PD using ophthalmic imaging data from 700 patients and 105,770 controls who participated in the retrospective AlzEye study. 

After adjustment for age, sex, ethnicity, hypertension, and diabetes, individuals with PD had significantly thinner GCIPL and reduced thickness of the INL.

To evaluate retinal changes in patients before a PD diagnosis, researchers then turned to 50,405 participants in the UK Biobank with no history of PD who received a retinal scan as part of their baseline visit. Of that group, 53 were diagnosed with PD during the study period. 

Researchers found an association between new diagnoses of PD and reduced thickness of the GCIPL (hazard ratio [HR], 0.62; P = .002) and thinner INL, especially at the inferior subfield (HR, 0.66; P = .002). That association persisted even in people whose clinical symptoms developed within 2 years of the retinal scan. 

“We wonder if the reduced INL thickness is indicating a direct dopaminergic impairment occurring within the inner retina,” Dr. Wagner said. “Dopaminergic amacrine cells only account for a small proportion of the cells in this layer but previous work in the laboratory shows observable abnormalities in Parkinson’s disease.”
 

Too early for diagnostics?

Commenting on the findings, Rebecca Gilbert, MD, PhD, chief scientific officer, American Parkinson Disease Association, noted that the changes in the retinal thickness identified in the study were too small to be useful in the clinic as a screening tool for early PD. 

“In order for that to happen, the specificity and sensitivity needs to be established,” she said. “Both specificity and sensitivity need to be high enough so that the test can be used to give clinically meaningful results – and reliably tell an individual with PD that he or she does have the disease and individual without PD that he or she doesn’t have the disease.”

Authors of an accompanying editorial agreed. Valeria Koska, MD, and Philipp Albrecht, MD, both of Heinrich Heine University Düsseldorf in Germany, noted that though the effect sizes of retinal changes were small, the study “sets new standards for the role of retinal morphology as potential biomarker in neurodegenerative disease.”

The study was funded by Fight for Sight UK, Medical Research Council, UK Research & Innovation, Basque Health Department, and the Wellcome Trust Study. Dr. Wagner reported funding from the Medical Research Council and the Rank Prize. Dr. Gilbert is employed by the American Parkinson Disease Association. Dr. Albrecht has received grant and personal fees and nonfinancial support from Allergan, Biogen, Celgene, Ipsen, Janssen Cilag, Merck, Merz Pharmaceuticals, Novartis, Roche, and Teva, outside the submitted work. Dr. Koska reported no relevant disclosures. 
 

A version of this article appeared on Medscape.com.

Changes in retinal tissues known to be associated with Parkinson’s disease (PD) may occur up to 7 years before clinical symptoms of the disease appear, a new study suggests. 

Researchers used artificial intelligence (AI) to analyze data from two population-level data sets and the world’s largest database of retinal images and associated clinical data to detect the retinal changes in patients with PD and in healthy individuals who developed the disease years later. 

Prior research had shown that PD is associated with a thinning of the ganglion cell-inner plexiform layer (GCIPL) in the retina, something that investigators confirmed in this new study. But they also identified changes in the inner nuclear layer (INL), which is a new finding. 

The study is the largest to date on retinal markers in PD and the first to show these changes in living patients.

“I think we are still several years away from converting these findings into individual level prediction for patients,” lead author, Siegfried Wagner, MD, MsC, Honorary Clinical Senior Research Fellow at Moorfields Eye Hospital and University College of London Institute of Ophthalmology in London, told this news organization. “The most important takeaway is that there are observable differences in the retina of individuals who go on to develop Parkinson’s disease.”

The findings were published online in Neurology. 
 

Another look at OCT

Researchers used data from retinal eye scans taken by optical coherence tomography (OCT), a noninvasive three-dimensional imaging technology that is widely used by opticians. 

Other studies have used OCT to detect retinal changes in multiple sclerosis and cognitive decline. 

For this research, investigators identified markers in people with PD using ophthalmic imaging data from 700 patients and 105,770 controls who participated in the retrospective AlzEye study. 

After adjustment for age, sex, ethnicity, hypertension, and diabetes, individuals with PD had significantly thinner GCIPL and reduced thickness of the INL.

To evaluate retinal changes in patients before a PD diagnosis, researchers then turned to 50,405 participants in the UK Biobank with no history of PD who received a retinal scan as part of their baseline visit. Of that group, 53 were diagnosed with PD during the study period. 

Researchers found an association between new diagnoses of PD and reduced thickness of the GCIPL (hazard ratio [HR], 0.62; P = .002) and thinner INL, especially at the inferior subfield (HR, 0.66; P = .002). That association persisted even in people whose clinical symptoms developed within 2 years of the retinal scan. 

“We wonder if the reduced INL thickness is indicating a direct dopaminergic impairment occurring within the inner retina,” Dr. Wagner said. “Dopaminergic amacrine cells only account for a small proportion of the cells in this layer but previous work in the laboratory shows observable abnormalities in Parkinson’s disease.”
 

Too early for diagnostics?

Commenting on the findings, Rebecca Gilbert, MD, PhD, chief scientific officer, American Parkinson Disease Association, noted that the changes in the retinal thickness identified in the study were too small to be useful in the clinic as a screening tool for early PD. 

“In order for that to happen, the specificity and sensitivity needs to be established,” she said. “Both specificity and sensitivity need to be high enough so that the test can be used to give clinically meaningful results – and reliably tell an individual with PD that he or she does have the disease and individual without PD that he or she doesn’t have the disease.”

Authors of an accompanying editorial agreed. Valeria Koska, MD, and Philipp Albrecht, MD, both of Heinrich Heine University Düsseldorf in Germany, noted that though the effect sizes of retinal changes were small, the study “sets new standards for the role of retinal morphology as potential biomarker in neurodegenerative disease.”

The study was funded by Fight for Sight UK, Medical Research Council, UK Research & Innovation, Basque Health Department, and the Wellcome Trust Study. Dr. Wagner reported funding from the Medical Research Council and the Rank Prize. Dr. Gilbert is employed by the American Parkinson Disease Association. Dr. Albrecht has received grant and personal fees and nonfinancial support from Allergan, Biogen, Celgene, Ipsen, Janssen Cilag, Merck, Merz Pharmaceuticals, Novartis, Roche, and Teva, outside the submitted work. Dr. Koska reported no relevant disclosures. 
 

A version of this article appeared on Medscape.com.

Changes in retinal tissues known to be associated with Parkinson’s disease (PD) may occur up to 7 years before clinical symptoms of the disease appear, a new study suggests. 

Researchers used artificial intelligence (AI) to analyze data from two population-level data sets and the world’s largest database of retinal images and associated clinical data to detect the retinal changes in patients with PD and in healthy individuals who developed the disease years later. 

Prior research had shown that PD is associated with a thinning of the ganglion cell-inner plexiform layer (GCIPL) in the retina, something that investigators confirmed in this new study. But they also identified changes in the inner nuclear layer (INL), which is a new finding. 

The study is the largest to date on retinal markers in PD and the first to show these changes in living patients.

“I think we are still several years away from converting these findings into individual level prediction for patients,” lead author, Siegfried Wagner, MD, MsC, Honorary Clinical Senior Research Fellow at Moorfields Eye Hospital and University College of London Institute of Ophthalmology in London, told this news organization. “The most important takeaway is that there are observable differences in the retina of individuals who go on to develop Parkinson’s disease.”

The findings were published online in Neurology. 
 

Another look at OCT

Researchers used data from retinal eye scans taken by optical coherence tomography (OCT), a noninvasive three-dimensional imaging technology that is widely used by opticians. 

Other studies have used OCT to detect retinal changes in multiple sclerosis and cognitive decline. 

For this research, investigators identified markers in people with PD using ophthalmic imaging data from 700 patients and 105,770 controls who participated in the retrospective AlzEye study. 

After adjustment for age, sex, ethnicity, hypertension, and diabetes, individuals with PD had significantly thinner GCIPL and reduced thickness of the INL.

To evaluate retinal changes in patients before a PD diagnosis, researchers then turned to 50,405 participants in the UK Biobank with no history of PD who received a retinal scan as part of their baseline visit. Of that group, 53 were diagnosed with PD during the study period. 

Researchers found an association between new diagnoses of PD and reduced thickness of the GCIPL (hazard ratio [HR], 0.62; P = .002) and thinner INL, especially at the inferior subfield (HR, 0.66; P = .002). That association persisted even in people whose clinical symptoms developed within 2 years of the retinal scan. 

“We wonder if the reduced INL thickness is indicating a direct dopaminergic impairment occurring within the inner retina,” Dr. Wagner said. “Dopaminergic amacrine cells only account for a small proportion of the cells in this layer but previous work in the laboratory shows observable abnormalities in Parkinson’s disease.”
 

Too early for diagnostics?

Commenting on the findings, Rebecca Gilbert, MD, PhD, chief scientific officer, American Parkinson Disease Association, noted that the changes in the retinal thickness identified in the study were too small to be useful in the clinic as a screening tool for early PD. 

“In order for that to happen, the specificity and sensitivity needs to be established,” she said. “Both specificity and sensitivity need to be high enough so that the test can be used to give clinically meaningful results – and reliably tell an individual with PD that he or she does have the disease and individual without PD that he or she doesn’t have the disease.”

Authors of an accompanying editorial agreed. Valeria Koska, MD, and Philipp Albrecht, MD, both of Heinrich Heine University Düsseldorf in Germany, noted that though the effect sizes of retinal changes were small, the study “sets new standards for the role of retinal morphology as potential biomarker in neurodegenerative disease.”

The study was funded by Fight for Sight UK, Medical Research Council, UK Research & Innovation, Basque Health Department, and the Wellcome Trust Study. Dr. Wagner reported funding from the Medical Research Council and the Rank Prize. Dr. Gilbert is employed by the American Parkinson Disease Association. Dr. Albrecht has received grant and personal fees and nonfinancial support from Allergan, Biogen, Celgene, Ipsen, Janssen Cilag, Merck, Merz Pharmaceuticals, Novartis, Roche, and Teva, outside the submitted work. Dr. Koska reported no relevant disclosures. 
 

A version of this article appeared on Medscape.com.

The Food and Drug Administration has approved natalizumab-sztn injection (Tyruko, Sandoz), the first biosimilar to Biogen’s Tysabri (natalizumab), to treat adults with relapsing forms of multiple sclerosis, including clinically isolated syndrome, relapsing remitting MS, and active secondary progressive disease.

“Biosimilar medications offer additional effective treatment options that have the potential to increase access for people living with relapsing forms of multiple sclerosis. [This] approval could have a meaningful impact for patients managing their disease,” Paul R. Lee, MD, PhD, director of the division of neurology II, FDA Center for Drug Evaluation and Research, said in a statement.

Olivier Le Moal/Getty Images

The natalizumab biosimilar is given using the same dosing and administration schedule. Like the reference product, it is indicated for adults with moderately to severely active Crohn’s disease unresponsive to other medications.

The approval of the natalizumab biosimilar is based on results of the phase 3 Antelope trial, which showed no clinically meaningful differences between it and the reference product.

The trial included 264 adults (mean age, 36 years; 61% women) with relapsing remitting MS from 48 centers in seven Eastern European countries.

All were randomly assigned to receive intravenous infusions every 4 weeks of 300 mg of the natalizumab biosimilar or the reference product for a total of 12 infusions.

At 24 and 48 weeks, there were no between-group differences in annualized relapse rates or Expanded Disability Status Scale scores, which were similar between treatment groups at baseline. There were also no significant differences in safety, tolerability, or immunogenicity.

The prescribing information for both natalizumab products includes a boxed warning about the increased risk of progressive multifocal leukoencephalopathy (PML), a viral infection of the brain that usually leads to death or severe disability.

Risk factors for the development of PML include the presence of antibodies to the JC virus, longer duration of therapy, and prior use of immunosuppressants.

“These factors should be considered in the context of expected benefit when initiating and continuing treatment with natalizumab products, and health care providers should monitor patients and withhold treatment immediately at the first sign or symptom suggestive of PML,” the FDA advises.

Because of the risks of PML, natalizumab products are available only through a restricted drug distribution program under a risk evaluation and mitigation strategy.

In a statement, Sandoz said it’s committed to having the product available in the United States “as soon as possible.”

A version of this article appeared on Medscape.com.

The Food and Drug Administration has approved natalizumab-sztn injection (Tyruko, Sandoz), the first biosimilar to Biogen’s Tysabri (natalizumab), to treat adults with relapsing forms of multiple sclerosis, including clinically isolated syndrome, relapsing remitting MS, and active secondary progressive disease.

“Biosimilar medications offer additional effective treatment options that have the potential to increase access for people living with relapsing forms of multiple sclerosis. [This] approval could have a meaningful impact for patients managing their disease,” Paul R. Lee, MD, PhD, director of the division of neurology II, FDA Center for Drug Evaluation and Research, said in a statement.

Olivier Le Moal/Getty Images

The natalizumab biosimilar is given using the same dosing and administration schedule. Like the reference product, it is indicated for adults with moderately to severely active Crohn’s disease unresponsive to other medications.

The approval of the natalizumab biosimilar is based on results of the phase 3 Antelope trial, which showed no clinically meaningful differences between it and the reference product.

The trial included 264 adults (mean age, 36 years; 61% women) with relapsing remitting MS from 48 centers in seven Eastern European countries.

All were randomly assigned to receive intravenous infusions every 4 weeks of 300 mg of the natalizumab biosimilar or the reference product for a total of 12 infusions.

At 24 and 48 weeks, there were no between-group differences in annualized relapse rates or Expanded Disability Status Scale scores, which were similar between treatment groups at baseline. There were also no significant differences in safety, tolerability, or immunogenicity.

The prescribing information for both natalizumab products includes a boxed warning about the increased risk of progressive multifocal leukoencephalopathy (PML), a viral infection of the brain that usually leads to death or severe disability.

Risk factors for the development of PML include the presence of antibodies to the JC virus, longer duration of therapy, and prior use of immunosuppressants.

“These factors should be considered in the context of expected benefit when initiating and continuing treatment with natalizumab products, and health care providers should monitor patients and withhold treatment immediately at the first sign or symptom suggestive of PML,” the FDA advises.

Because of the risks of PML, natalizumab products are available only through a restricted drug distribution program under a risk evaluation and mitigation strategy.

In a statement, Sandoz said it’s committed to having the product available in the United States “as soon as possible.”

A version of this article appeared on Medscape.com.

The Food and Drug Administration has approved natalizumab-sztn injection (Tyruko, Sandoz), the first biosimilar to Biogen’s Tysabri (natalizumab), to treat adults with relapsing forms of multiple sclerosis, including clinically isolated syndrome, relapsing remitting MS, and active secondary progressive disease.

“Biosimilar medications offer additional effective treatment options that have the potential to increase access for people living with relapsing forms of multiple sclerosis. [This] approval could have a meaningful impact for patients managing their disease,” Paul R. Lee, MD, PhD, director of the division of neurology II, FDA Center for Drug Evaluation and Research, said in a statement.

Olivier Le Moal/Getty Images

The natalizumab biosimilar is given using the same dosing and administration schedule. Like the reference product, it is indicated for adults with moderately to severely active Crohn’s disease unresponsive to other medications.

The approval of the natalizumab biosimilar is based on results of the phase 3 Antelope trial, which showed no clinically meaningful differences between it and the reference product.

The trial included 264 adults (mean age, 36 years; 61% women) with relapsing remitting MS from 48 centers in seven Eastern European countries.

All were randomly assigned to receive intravenous infusions every 4 weeks of 300 mg of the natalizumab biosimilar or the reference product for a total of 12 infusions.

At 24 and 48 weeks, there were no between-group differences in annualized relapse rates or Expanded Disability Status Scale scores, which were similar between treatment groups at baseline. There were also no significant differences in safety, tolerability, or immunogenicity.

The prescribing information for both natalizumab products includes a boxed warning about the increased risk of progressive multifocal leukoencephalopathy (PML), a viral infection of the brain that usually leads to death or severe disability.

Risk factors for the development of PML include the presence of antibodies to the JC virus, longer duration of therapy, and prior use of immunosuppressants.

“These factors should be considered in the context of expected benefit when initiating and continuing treatment with natalizumab products, and health care providers should monitor patients and withhold treatment immediately at the first sign or symptom suggestive of PML,” the FDA advises.

Because of the risks of PML, natalizumab products are available only through a restricted drug distribution program under a risk evaluation and mitigation strategy.

In a statement, Sandoz said it’s committed to having the product available in the United States “as soon as possible.”

A version of this article appeared on Medscape.com.