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Getting closer to an accurate early Alzheimer’s test
Researchers have created the most sensitive test yet
Scientists at Washington University in St. Louis have developed the most sensitive blood test yet for Alzheimer’s. In studies, the test identified patients with amyloid deposits, using mass spectrometry, before brain scans did.
Of course, amyloid is a normal brain protein; most people with amyloid deposits will not develop dementia, but it’s a significant risk factor. When blood amyloid levels are low, it may indicate it is clumping in the brain.
Researchers used mass spectrometry to test volunteers’ stored blood for beta amyloid, then checked if the levels predicted the results of PET scans. Mass spectrometry identified asymptomatic people accumulating beta amyloid in their brains when PET scans were still negative. The scans only showed beta amyloid in the brain years later. The blood test predicted the presence of plaque even in mostly asymptomatic people with 94% accuracy.
The test will not be available for clinical use for years, but prior to that it will be helpful to scientists conducting trials of drugs to prevent Alzheimer’s, seeking participants in the earliest stages of the disease.
Reference
1. Kolata G. A Blood Test for Alzheimer’s? It’s Coming, Scientists Report. New York Times. Aug. 1, 2019. https://www.nytimes.com/2019/08/01/health/alzheimers-blood-test.html.
Researchers have created the most sensitive test yet
Researchers have created the most sensitive test yet
Scientists at Washington University in St. Louis have developed the most sensitive blood test yet for Alzheimer’s. In studies, the test identified patients with amyloid deposits, using mass spectrometry, before brain scans did.
Of course, amyloid is a normal brain protein; most people with amyloid deposits will not develop dementia, but it’s a significant risk factor. When blood amyloid levels are low, it may indicate it is clumping in the brain.
Researchers used mass spectrometry to test volunteers’ stored blood for beta amyloid, then checked if the levels predicted the results of PET scans. Mass spectrometry identified asymptomatic people accumulating beta amyloid in their brains when PET scans were still negative. The scans only showed beta amyloid in the brain years later. The blood test predicted the presence of plaque even in mostly asymptomatic people with 94% accuracy.
The test will not be available for clinical use for years, but prior to that it will be helpful to scientists conducting trials of drugs to prevent Alzheimer’s, seeking participants in the earliest stages of the disease.
Reference
1. Kolata G. A Blood Test for Alzheimer’s? It’s Coming, Scientists Report. New York Times. Aug. 1, 2019. https://www.nytimes.com/2019/08/01/health/alzheimers-blood-test.html.
Scientists at Washington University in St. Louis have developed the most sensitive blood test yet for Alzheimer’s. In studies, the test identified patients with amyloid deposits, using mass spectrometry, before brain scans did.
Of course, amyloid is a normal brain protein; most people with amyloid deposits will not develop dementia, but it’s a significant risk factor. When blood amyloid levels are low, it may indicate it is clumping in the brain.
Researchers used mass spectrometry to test volunteers’ stored blood for beta amyloid, then checked if the levels predicted the results of PET scans. Mass spectrometry identified asymptomatic people accumulating beta amyloid in their brains when PET scans were still negative. The scans only showed beta amyloid in the brain years later. The blood test predicted the presence of plaque even in mostly asymptomatic people with 94% accuracy.
The test will not be available for clinical use for years, but prior to that it will be helpful to scientists conducting trials of drugs to prevent Alzheimer’s, seeking participants in the earliest stages of the disease.
Reference
1. Kolata G. A Blood Test for Alzheimer’s? It’s Coming, Scientists Report. New York Times. Aug. 1, 2019. https://www.nytimes.com/2019/08/01/health/alzheimers-blood-test.html.
Joint guidelines favor antibody testing for certain Lyme disease manifestations
New clinical practice guidelines on Lyme disease place a strong emphasis on antibody testing to assess for rheumatologic and neurologic syndromes. “Diagnostically, we recommend testing via antibodies, and an index of antibodies in cerebrospinal fluid [CSF] versus serum. Importantly, we recommend against using polymerase chain reaction [PCR] in CSF,” Jeffrey A. Rumbaugh, MD, PhD, a coauthor of the guidelines and a member of the American Academy of Neurology, said in an interview.
The Infectious Diseases Society of America, AAN, and the American College of Rheumatology convened a multidisciplinary panel to develop the 43 recommendations, seeking input from 12 additional medical specialties, and patients. The panel conducted a systematic review of available evidence on preventing, diagnosing, and treating Lyme disease, using the Grading of Recommendations Assessment, Development and Evaluation model to evaluate clinical evidence and strength of recommendations. The guidelines were simultaneous published in Clinical Infectious Diseases, Neurology, Arthritis & Rheumatology, and Arthritis Care & Research.
This is the first time these organizations have collaborated on joint Lyme disease guidelines, which focus mainly on neurologic, cardiac, and rheumatologic manifestations.
“We are very excited to provide these updated guidelines to assist clinicians working in numerous medical specialties around the country, and even the world, as they care for patients suffering from Lyme disease,” Dr. Rumbaugh said.
When to use and not to use PCR
Guideline authors called for specific testing regimens depending on presentation of symptoms. Generally, they advised that individuals with a skin rash suggestive of early disease seek a clinical diagnosis instead of laboratory testing.
Recommendations on Lyme arthritis support previous IDSA guidelines published in 2006, Linda K. Bockenstedt, MD, professor of medicine at Yale University, New Haven, Conn., and a coauthor of the guidelines, said in an interview.
To evaluate for potential Lyme arthritis, clinicians should choose serum antibody testing over PCR or culture of blood or synovial fluid/tissue. However, if a doctor is assessing a seropositive patient for Lyme arthritis diagnosis but needs more information for treatment decisions, the authors recommended PCR applied to synovial fluid or tissue over Borrelia culture.
“Synovial fluid can be analyzed by PCR, but sensitivity is generally lower than serology,” Dr. Bockenstedt explained. Additionally, culture of joint fluid or synovial tissue for Lyme spirochetes has 0% sensitivity in multiple studies. “For these reasons, we recommend serum antibody testing over PCR of joint fluid or other methods for an initial diagnosis.”
Serum antibody testing over PCR or culture is also recommended for identifying Lyme neuroborreliosis in the peripheral nervous system (PNS) or CNS.
Despite the recent popularity of Lyme PCR testing in hospitals and labs, “with Lyme at least, antibodies are better in the CSF,” Dr. Rumbaugh said. Studies have shown that “most patients with even early neurologic Lyme disease are seropositive by conventional antibody testing at time of initial clinical presentation, and that intrathecal antibody production, as demonstrated by an elevated CSF:serum index, is highly specific for CNS involvement.”
If done correctly, antibody testing is both sensitive and specific for neurologic Lyme disease. “On the other hand, sensitivity of Lyme PCR performed on CSF has been only in the 5%-17% range in studies. Incidentally, Lyme PCR on blood is also not sensitive and therefore not recommended,” Dr. Rumbaugh said.
Guideline authors recommended testing in patients with the following conditions: acute neurologic disorders such as meningitis, painful radiculoneuritis, mononeuropathy multiplex; evidence of spinal cord or brain inflammation; and acute myocarditis/pericarditis of unknown cause in an appropriate epidemiologic setting.
They did not recommend testing in patients with typical amyotrophic lateral sclerosis; relapsing remitting multiple sclerosis; Parkinson’s disease, dementia, or cognitive decline; new-onset seizures; other neurologic syndromes or those lacking clinical or epidemiologic history that would support a diagnosis of Lyme disease; and patients with chronic cardiomyopathy of unknown cause.
The authors also called for judicious use of electrocardiogram to screen for Lyme carditis, recommending it only in patients signs or symptoms of this condition. However, patients at risk for or showing signs of severe cardiac complications of Lyme disease should be hospitalized and monitored via ECG.
Timelines for antibiotics
Most patients with Lyme disease should receive oral antibiotics, although duration times vary depending on the disease state. “We recommend that prophylactic antibiotic therapy be given to adults and children only within 72 hours of removal of an identified high-risk tick bite, but not for bites that are equivocal risk or low risk,” according to the guideline authors.
Specific antibiotic treatment regimens by condition are as follows: 10-14 days for early-stage disease, 14 days for Lyme carditis, 14-21 days for neurologic Lyme disease, and 28 days for late Lyme arthritis.
“Despite arthritis occurring late in the course of infection, treatment with a 28-day course of oral antibiotic is effective, although the rates of complete resolution of joint swelling can vary,” Dr. Bockenstedt said. Clinicians may consider a second 28-day course of oral antibiotics or a 2- to 4-week course of ceftriaxone in patients with persistent swelling, after an initial course of oral antibiotics.
Citing knowledge gaps, the authors made no recommendation on secondary antibiotic treatment for unresolved Lyme arthritis. Rheumatologists can play an important role in the care of this small subset of patients, Dr. Bockenstedt noted. “Studies of patients with ‘postantibiotic Lyme arthritis’ show that they can be treated successfully with intra-articular steroids, nonsteroidal anti-inflammatory drugs, disease-modifying antirheumatic drugs, biologic response modifiers, and even synovectomy with successful outcomes.” Some of these therapies also work in cases where first courses of oral and intravenous antibiotics are unsuccessful.
“Antibiotic therapy for longer than 8 weeks is not expected to provide additional benefit to patients with persistent arthritis if that treatment has included one course of IV therapy,” the authors clarified.
For patients with Lyme disease–associated meningitis, cranial neuropathy, radiculoneuropathy, or other PNS manifestations, the authors recommended intravenous ceftriaxone, cefotaxime, penicillin G, or oral doxycycline over other antimicrobials.
“For most neurologic presentations, oral doxycycline is just as effective as appropriate IV antibiotics,” Dr. Rumbaugh said. “The exception is the relatively rare situation where the patient is felt to have parenchymal involvement of brain or spinal cord, in which case the guidelines recommend IV antibiotics over oral antibiotics.” In the studies, there was no statistically significant difference between oral or intravenous regimens in response rate or risk of adverse effects.
Patients with nonspecific symptoms such as fatigue, pain, or cognitive impairment following treatment should not receive additional antibiotic therapy if there’s no evidence of treatment failure or infection. These two markers “would include objective signs of disease activity, such as arthritis, meningitis, or neuropathy,” the guideline authors wrote in comments accompanying the recommendation.
Clinicians caring for patients with symptomatic bradycardia caused by Lyme carditis should consider temporary pacing measures instead of a permanent pacemaker. For patients hospitalized with Lyme carditis, “we suggest initially using IV ceftriaxone over oral antibiotics until there is evidence of clinical improvement, then switching to oral antibiotics to complete treatment,” they advised. Outpatients with this condition should receive oral antibiotics instead of intravenous antibiotics.
Advice on antibodies testing ‘particularly cogent’
For individuals without expertise in these areas, the recommendations are clear and useful, Daniel E. Furst, MD, professor of medicine (emeritus) at the University of California, Los Angeles, adjunct professor at the University of Washington, Seattle, and research professor at the University of Florence (Italy), said in an interview.
“As a rheumatologist, I would have appreciated literature references for some of the recommendations but, nevertheless, find these useful. I applaud the care with which the evidence was gathered and the general formatting, which tried to review multiple possible scenarios surrounding Lyme arthritis,” said Dr. Furst, offering a third-party perspective.
The advice on using antibodies tests to make a diagnosis of Lyme arthritis “is particularly cogent and more useful than trying to culture these fastidious organisms,” he added.
The IDSA, AAN, and ACR provided support for the guideline. Dr. Bockenstedt reported receiving research funding from the National Institutes of Health and the Gordon and the Llura Gund Foundation and remuneration from L2 Diagnostics for investigator-initiated NIH-sponsored research. Dr. Rumbaugh had no conflicts of interest to disclose. Dr. Furst reported no conflicts of interest in commenting on these guidelines.
SOURCE: Rumbaugh JA et al. Clin Infect Dis. 2020 Nov 30. doi: 10.1093/cid/ciaa1215.
New clinical practice guidelines on Lyme disease place a strong emphasis on antibody testing to assess for rheumatologic and neurologic syndromes. “Diagnostically, we recommend testing via antibodies, and an index of antibodies in cerebrospinal fluid [CSF] versus serum. Importantly, we recommend against using polymerase chain reaction [PCR] in CSF,” Jeffrey A. Rumbaugh, MD, PhD, a coauthor of the guidelines and a member of the American Academy of Neurology, said in an interview.
The Infectious Diseases Society of America, AAN, and the American College of Rheumatology convened a multidisciplinary panel to develop the 43 recommendations, seeking input from 12 additional medical specialties, and patients. The panel conducted a systematic review of available evidence on preventing, diagnosing, and treating Lyme disease, using the Grading of Recommendations Assessment, Development and Evaluation model to evaluate clinical evidence and strength of recommendations. The guidelines were simultaneous published in Clinical Infectious Diseases, Neurology, Arthritis & Rheumatology, and Arthritis Care & Research.
This is the first time these organizations have collaborated on joint Lyme disease guidelines, which focus mainly on neurologic, cardiac, and rheumatologic manifestations.
“We are very excited to provide these updated guidelines to assist clinicians working in numerous medical specialties around the country, and even the world, as they care for patients suffering from Lyme disease,” Dr. Rumbaugh said.
When to use and not to use PCR
Guideline authors called for specific testing regimens depending on presentation of symptoms. Generally, they advised that individuals with a skin rash suggestive of early disease seek a clinical diagnosis instead of laboratory testing.
Recommendations on Lyme arthritis support previous IDSA guidelines published in 2006, Linda K. Bockenstedt, MD, professor of medicine at Yale University, New Haven, Conn., and a coauthor of the guidelines, said in an interview.
To evaluate for potential Lyme arthritis, clinicians should choose serum antibody testing over PCR or culture of blood or synovial fluid/tissue. However, if a doctor is assessing a seropositive patient for Lyme arthritis diagnosis but needs more information for treatment decisions, the authors recommended PCR applied to synovial fluid or tissue over Borrelia culture.
“Synovial fluid can be analyzed by PCR, but sensitivity is generally lower than serology,” Dr. Bockenstedt explained. Additionally, culture of joint fluid or synovial tissue for Lyme spirochetes has 0% sensitivity in multiple studies. “For these reasons, we recommend serum antibody testing over PCR of joint fluid or other methods for an initial diagnosis.”
Serum antibody testing over PCR or culture is also recommended for identifying Lyme neuroborreliosis in the peripheral nervous system (PNS) or CNS.
Despite the recent popularity of Lyme PCR testing in hospitals and labs, “with Lyme at least, antibodies are better in the CSF,” Dr. Rumbaugh said. Studies have shown that “most patients with even early neurologic Lyme disease are seropositive by conventional antibody testing at time of initial clinical presentation, and that intrathecal antibody production, as demonstrated by an elevated CSF:serum index, is highly specific for CNS involvement.”
If done correctly, antibody testing is both sensitive and specific for neurologic Lyme disease. “On the other hand, sensitivity of Lyme PCR performed on CSF has been only in the 5%-17% range in studies. Incidentally, Lyme PCR on blood is also not sensitive and therefore not recommended,” Dr. Rumbaugh said.
Guideline authors recommended testing in patients with the following conditions: acute neurologic disorders such as meningitis, painful radiculoneuritis, mononeuropathy multiplex; evidence of spinal cord or brain inflammation; and acute myocarditis/pericarditis of unknown cause in an appropriate epidemiologic setting.
They did not recommend testing in patients with typical amyotrophic lateral sclerosis; relapsing remitting multiple sclerosis; Parkinson’s disease, dementia, or cognitive decline; new-onset seizures; other neurologic syndromes or those lacking clinical or epidemiologic history that would support a diagnosis of Lyme disease; and patients with chronic cardiomyopathy of unknown cause.
The authors also called for judicious use of electrocardiogram to screen for Lyme carditis, recommending it only in patients signs or symptoms of this condition. However, patients at risk for or showing signs of severe cardiac complications of Lyme disease should be hospitalized and monitored via ECG.
Timelines for antibiotics
Most patients with Lyme disease should receive oral antibiotics, although duration times vary depending on the disease state. “We recommend that prophylactic antibiotic therapy be given to adults and children only within 72 hours of removal of an identified high-risk tick bite, but not for bites that are equivocal risk or low risk,” according to the guideline authors.
Specific antibiotic treatment regimens by condition are as follows: 10-14 days for early-stage disease, 14 days for Lyme carditis, 14-21 days for neurologic Lyme disease, and 28 days for late Lyme arthritis.
“Despite arthritis occurring late in the course of infection, treatment with a 28-day course of oral antibiotic is effective, although the rates of complete resolution of joint swelling can vary,” Dr. Bockenstedt said. Clinicians may consider a second 28-day course of oral antibiotics or a 2- to 4-week course of ceftriaxone in patients with persistent swelling, after an initial course of oral antibiotics.
Citing knowledge gaps, the authors made no recommendation on secondary antibiotic treatment for unresolved Lyme arthritis. Rheumatologists can play an important role in the care of this small subset of patients, Dr. Bockenstedt noted. “Studies of patients with ‘postantibiotic Lyme arthritis’ show that they can be treated successfully with intra-articular steroids, nonsteroidal anti-inflammatory drugs, disease-modifying antirheumatic drugs, biologic response modifiers, and even synovectomy with successful outcomes.” Some of these therapies also work in cases where first courses of oral and intravenous antibiotics are unsuccessful.
“Antibiotic therapy for longer than 8 weeks is not expected to provide additional benefit to patients with persistent arthritis if that treatment has included one course of IV therapy,” the authors clarified.
For patients with Lyme disease–associated meningitis, cranial neuropathy, radiculoneuropathy, or other PNS manifestations, the authors recommended intravenous ceftriaxone, cefotaxime, penicillin G, or oral doxycycline over other antimicrobials.
“For most neurologic presentations, oral doxycycline is just as effective as appropriate IV antibiotics,” Dr. Rumbaugh said. “The exception is the relatively rare situation where the patient is felt to have parenchymal involvement of brain or spinal cord, in which case the guidelines recommend IV antibiotics over oral antibiotics.” In the studies, there was no statistically significant difference between oral or intravenous regimens in response rate or risk of adverse effects.
Patients with nonspecific symptoms such as fatigue, pain, or cognitive impairment following treatment should not receive additional antibiotic therapy if there’s no evidence of treatment failure or infection. These two markers “would include objective signs of disease activity, such as arthritis, meningitis, or neuropathy,” the guideline authors wrote in comments accompanying the recommendation.
Clinicians caring for patients with symptomatic bradycardia caused by Lyme carditis should consider temporary pacing measures instead of a permanent pacemaker. For patients hospitalized with Lyme carditis, “we suggest initially using IV ceftriaxone over oral antibiotics until there is evidence of clinical improvement, then switching to oral antibiotics to complete treatment,” they advised. Outpatients with this condition should receive oral antibiotics instead of intravenous antibiotics.
Advice on antibodies testing ‘particularly cogent’
For individuals without expertise in these areas, the recommendations are clear and useful, Daniel E. Furst, MD, professor of medicine (emeritus) at the University of California, Los Angeles, adjunct professor at the University of Washington, Seattle, and research professor at the University of Florence (Italy), said in an interview.
“As a rheumatologist, I would have appreciated literature references for some of the recommendations but, nevertheless, find these useful. I applaud the care with which the evidence was gathered and the general formatting, which tried to review multiple possible scenarios surrounding Lyme arthritis,” said Dr. Furst, offering a third-party perspective.
The advice on using antibodies tests to make a diagnosis of Lyme arthritis “is particularly cogent and more useful than trying to culture these fastidious organisms,” he added.
The IDSA, AAN, and ACR provided support for the guideline. Dr. Bockenstedt reported receiving research funding from the National Institutes of Health and the Gordon and the Llura Gund Foundation and remuneration from L2 Diagnostics for investigator-initiated NIH-sponsored research. Dr. Rumbaugh had no conflicts of interest to disclose. Dr. Furst reported no conflicts of interest in commenting on these guidelines.
SOURCE: Rumbaugh JA et al. Clin Infect Dis. 2020 Nov 30. doi: 10.1093/cid/ciaa1215.
New clinical practice guidelines on Lyme disease place a strong emphasis on antibody testing to assess for rheumatologic and neurologic syndromes. “Diagnostically, we recommend testing via antibodies, and an index of antibodies in cerebrospinal fluid [CSF] versus serum. Importantly, we recommend against using polymerase chain reaction [PCR] in CSF,” Jeffrey A. Rumbaugh, MD, PhD, a coauthor of the guidelines and a member of the American Academy of Neurology, said in an interview.
The Infectious Diseases Society of America, AAN, and the American College of Rheumatology convened a multidisciplinary panel to develop the 43 recommendations, seeking input from 12 additional medical specialties, and patients. The panel conducted a systematic review of available evidence on preventing, diagnosing, and treating Lyme disease, using the Grading of Recommendations Assessment, Development and Evaluation model to evaluate clinical evidence and strength of recommendations. The guidelines were simultaneous published in Clinical Infectious Diseases, Neurology, Arthritis & Rheumatology, and Arthritis Care & Research.
This is the first time these organizations have collaborated on joint Lyme disease guidelines, which focus mainly on neurologic, cardiac, and rheumatologic manifestations.
“We are very excited to provide these updated guidelines to assist clinicians working in numerous medical specialties around the country, and even the world, as they care for patients suffering from Lyme disease,” Dr. Rumbaugh said.
When to use and not to use PCR
Guideline authors called for specific testing regimens depending on presentation of symptoms. Generally, they advised that individuals with a skin rash suggestive of early disease seek a clinical diagnosis instead of laboratory testing.
Recommendations on Lyme arthritis support previous IDSA guidelines published in 2006, Linda K. Bockenstedt, MD, professor of medicine at Yale University, New Haven, Conn., and a coauthor of the guidelines, said in an interview.
To evaluate for potential Lyme arthritis, clinicians should choose serum antibody testing over PCR or culture of blood or synovial fluid/tissue. However, if a doctor is assessing a seropositive patient for Lyme arthritis diagnosis but needs more information for treatment decisions, the authors recommended PCR applied to synovial fluid or tissue over Borrelia culture.
“Synovial fluid can be analyzed by PCR, but sensitivity is generally lower than serology,” Dr. Bockenstedt explained. Additionally, culture of joint fluid or synovial tissue for Lyme spirochetes has 0% sensitivity in multiple studies. “For these reasons, we recommend serum antibody testing over PCR of joint fluid or other methods for an initial diagnosis.”
Serum antibody testing over PCR or culture is also recommended for identifying Lyme neuroborreliosis in the peripheral nervous system (PNS) or CNS.
Despite the recent popularity of Lyme PCR testing in hospitals and labs, “with Lyme at least, antibodies are better in the CSF,” Dr. Rumbaugh said. Studies have shown that “most patients with even early neurologic Lyme disease are seropositive by conventional antibody testing at time of initial clinical presentation, and that intrathecal antibody production, as demonstrated by an elevated CSF:serum index, is highly specific for CNS involvement.”
If done correctly, antibody testing is both sensitive and specific for neurologic Lyme disease. “On the other hand, sensitivity of Lyme PCR performed on CSF has been only in the 5%-17% range in studies. Incidentally, Lyme PCR on blood is also not sensitive and therefore not recommended,” Dr. Rumbaugh said.
Guideline authors recommended testing in patients with the following conditions: acute neurologic disorders such as meningitis, painful radiculoneuritis, mononeuropathy multiplex; evidence of spinal cord or brain inflammation; and acute myocarditis/pericarditis of unknown cause in an appropriate epidemiologic setting.
They did not recommend testing in patients with typical amyotrophic lateral sclerosis; relapsing remitting multiple sclerosis; Parkinson’s disease, dementia, or cognitive decline; new-onset seizures; other neurologic syndromes or those lacking clinical or epidemiologic history that would support a diagnosis of Lyme disease; and patients with chronic cardiomyopathy of unknown cause.
The authors also called for judicious use of electrocardiogram to screen for Lyme carditis, recommending it only in patients signs or symptoms of this condition. However, patients at risk for or showing signs of severe cardiac complications of Lyme disease should be hospitalized and monitored via ECG.
Timelines for antibiotics
Most patients with Lyme disease should receive oral antibiotics, although duration times vary depending on the disease state. “We recommend that prophylactic antibiotic therapy be given to adults and children only within 72 hours of removal of an identified high-risk tick bite, but not for bites that are equivocal risk or low risk,” according to the guideline authors.
Specific antibiotic treatment regimens by condition are as follows: 10-14 days for early-stage disease, 14 days for Lyme carditis, 14-21 days for neurologic Lyme disease, and 28 days for late Lyme arthritis.
“Despite arthritis occurring late in the course of infection, treatment with a 28-day course of oral antibiotic is effective, although the rates of complete resolution of joint swelling can vary,” Dr. Bockenstedt said. Clinicians may consider a second 28-day course of oral antibiotics or a 2- to 4-week course of ceftriaxone in patients with persistent swelling, after an initial course of oral antibiotics.
Citing knowledge gaps, the authors made no recommendation on secondary antibiotic treatment for unresolved Lyme arthritis. Rheumatologists can play an important role in the care of this small subset of patients, Dr. Bockenstedt noted. “Studies of patients with ‘postantibiotic Lyme arthritis’ show that they can be treated successfully with intra-articular steroids, nonsteroidal anti-inflammatory drugs, disease-modifying antirheumatic drugs, biologic response modifiers, and even synovectomy with successful outcomes.” Some of these therapies also work in cases where first courses of oral and intravenous antibiotics are unsuccessful.
“Antibiotic therapy for longer than 8 weeks is not expected to provide additional benefit to patients with persistent arthritis if that treatment has included one course of IV therapy,” the authors clarified.
For patients with Lyme disease–associated meningitis, cranial neuropathy, radiculoneuropathy, or other PNS manifestations, the authors recommended intravenous ceftriaxone, cefotaxime, penicillin G, or oral doxycycline over other antimicrobials.
“For most neurologic presentations, oral doxycycline is just as effective as appropriate IV antibiotics,” Dr. Rumbaugh said. “The exception is the relatively rare situation where the patient is felt to have parenchymal involvement of brain or spinal cord, in which case the guidelines recommend IV antibiotics over oral antibiotics.” In the studies, there was no statistically significant difference between oral or intravenous regimens in response rate or risk of adverse effects.
Patients with nonspecific symptoms such as fatigue, pain, or cognitive impairment following treatment should not receive additional antibiotic therapy if there’s no evidence of treatment failure or infection. These two markers “would include objective signs of disease activity, such as arthritis, meningitis, or neuropathy,” the guideline authors wrote in comments accompanying the recommendation.
Clinicians caring for patients with symptomatic bradycardia caused by Lyme carditis should consider temporary pacing measures instead of a permanent pacemaker. For patients hospitalized with Lyme carditis, “we suggest initially using IV ceftriaxone over oral antibiotics until there is evidence of clinical improvement, then switching to oral antibiotics to complete treatment,” they advised. Outpatients with this condition should receive oral antibiotics instead of intravenous antibiotics.
Advice on antibodies testing ‘particularly cogent’
For individuals without expertise in these areas, the recommendations are clear and useful, Daniel E. Furst, MD, professor of medicine (emeritus) at the University of California, Los Angeles, adjunct professor at the University of Washington, Seattle, and research professor at the University of Florence (Italy), said in an interview.
“As a rheumatologist, I would have appreciated literature references for some of the recommendations but, nevertheless, find these useful. I applaud the care with which the evidence was gathered and the general formatting, which tried to review multiple possible scenarios surrounding Lyme arthritis,” said Dr. Furst, offering a third-party perspective.
The advice on using antibodies tests to make a diagnosis of Lyme arthritis “is particularly cogent and more useful than trying to culture these fastidious organisms,” he added.
The IDSA, AAN, and ACR provided support for the guideline. Dr. Bockenstedt reported receiving research funding from the National Institutes of Health and the Gordon and the Llura Gund Foundation and remuneration from L2 Diagnostics for investigator-initiated NIH-sponsored research. Dr. Rumbaugh had no conflicts of interest to disclose. Dr. Furst reported no conflicts of interest in commenting on these guidelines.
SOURCE: Rumbaugh JA et al. Clin Infect Dis. 2020 Nov 30. doi: 10.1093/cid/ciaa1215.
FROM CLINICAL INFECTIOUS DISEASES
Oral steroids benefit patients with cluster headache
Adjunctive oral prednisone appears to significantly reduce cluster headache attacks, new research shows. Results of the multicenter, randomized, double-blind trial show that patients who received the steroid had 25% fewer attacks in the first week of therapy, compared with their counterparts who received placebo.
In addition, more than a third of patients in the prednisone group were pain free, and for almost half, headache frequency was reduced by at least 50% at day 7 of treatment.
These findings provide clear evidence that prednisone, in conjunction with the use of verapamil, is effective in cluster headache, said lead author Mark Obermann, MD, director, Center for Neurology, Asklepios Hospitals Seesen (Germany), and associate professor, University of Duisburg-Essen (Germany).
The key message, he added, is that all patients with cluster headache should receive prednisone at the start of an episode.
The study was published online Nov. 24 in the Lancet Neurology.
‘Suicide headaches’
Cluster headaches are intense unilateral attacks of facial and head pain. They last 15-180 minutes and predominantly affect men. They are accompanied by trigeminal autonomic symptoms and are extremely painful. “They’re referred to as ‘suicide headaches’ because the pain is so severe that patients often report they think about killing themselves to get rid of the pain,” said Dr. Obermann.
The cause is unclear, although there is some evidence that the hypothalamus is involved. The headaches sometimes follow a “strict circadian pattern,” said Dr. Obermann. He noted that the attacks might occur over a few weeks or months and then not return for months or even years.
An estimated 1 in 1,000 people experience cluster headache, but the condition is underrecognized, and research is scarce and poorly funded. Previous research does show that the calcium channel blocker verapamil, which is used to treat high blood pressure, is effective in cluster headache. However, it takes about 14 days to work and has to be slowly titrated because of cardiac side effects, said Dr. Obermann. For these reasons, international guidelines recommend initiating short-term preventive treatment with corticosteroids to suppress, or at least lessen, cluster headache attacks until long-term prevention is effective.
Although some clinicians treat cluster headaches with corticosteroids, others don’t because of a lack of evidence that shows they are effective. “There’s no evidence whatsoever on what the correct dose is or whether it helps at all. This is the gap we wanted to close,” said Dr. Obermann.
The study included 116 adult patients with cluster headache from 10 centers who were experiencing a cluster headache episode and were not taking prophylactic medication.
The trial only included patients who had an attack within 30 days of their current episode. The investigators included this restriction to reduce the possibility of spontaneous remission, which is “a big problem” in cluster headache trials, he said. To confirm that episodes were cluster headache attacks, patients were also required to have moderate to severe pain, indicated by a score of at least 5 on a numerical rating scale in which 0 indicates no pain and 10 indicates the worse imaginable pain.
Participants were allowed to use treatments for acute attack, but these therapies were limited to triptans, high-flow oxygen, intranasal lidocaine, ergotamine, and oral analgesics.
Debilitating pain
Patients were randomly assigned to receive oral prednisone (n = 53) or placebo (n = 56). The study groups were matched with respect to demographic and clinical characteristics. Prednisone was initiated at 100 mg/d for 5 days and was then tapered by 20 mg every 3 days in the active-treatment group. All patients also received oral verapamil at a starting dose of 40 mg three times per day. The dose was increased every 3 days by 40 mg to a maximum of 360 mg/d.
All participants received pantoprazole 20 mg to prevent the gastric side effects of prednisone. An attack was defined as a unilateral headache of moderate to severe intensity. The study lasted 28 days.
The study’s primary outcome was the mean number of cluster headache attacks during the first week of treatment with prednisone versus placebo.
The mean number of attacks during the first week of treatment was 7.1 in the prednisone group and 9.5 in the placebo group, for a difference of –2.4 attacks (95% confidence interval, –4.8 to –0.03; P = .002). “This might not sound like much,” but reducing the number of daily attacks from, say, eight to six “really makes a difference because the attacks are so painful,” said Dr. Obermann.
The prednisone group also came out on top for a number secondary outcomes. After the first 7 days, attacks ceased in 35% of the prednisone group versus 7% in the placebo group.
‘Clear evidence’ of efficacy
About 49% of patients who took prednisone reported a reduction of at least 50% in attack frequency at day 7. By comparison, 15% of patients who received placebo reported such a reduction. The number of cluster attacks at day 28 was less in the prednisone group than in the patients who received placebo.
With respect to treatment effect, the difference between prednisone and placebo gradually lessened over time “in parallel to the verapamil dose reaching its therapeutic effect,” the investigators noted. “Therefore, attack frequency reduction slowly converged between groups,” they added.
The study results provide “clear evidence” and should reassure clinicians that short-term prednisone early in a cluster headache attack is effective, said Dr. Obermann.
Adverse events, which included headache, palpitations, dizziness, and nausea, were as expected and were similar in the two groups. There were only two severe adverse events, both of which occurred in participants in the placebo group.
Dr. Obermann said the investigators were surprised that so many patients in the study were taking analgesics. “Analgesics don’t work in cluster headache; they just don’t work in this kind of pain.”
He noted that prednisone exposure of study patients spanned only 19 days and amounted to only 1,100 mg, which he believes is safe.
The prednisone dose used in the study is “what most clinicians use in clinical practice,” although there have been reports of success using 500 mg of IV prednisone over 5 days, said Dr. Obermann. He added that it would be “interesting to see if 50 mg would be just as good” as a starting dose.
Potential limitations of the study include the fact that the majority of participants were White, so the findings may not be generalizable to other populations.
Long-awaited results
In an accompanying editorial, Anne Ducros, MD, PhD, professor of neurology and director of the Headache Center, Montpellier (France) University Hospital, said the study provides “strong and long-awaited evidence supporting the use of oral steroids as a transitional treatment option.”
The trial “raises many topics for future research,” one of which is the long-term safety of prednisone for patients with cluster headache, said Dr. Ducros. She noted that use of high-dose steroids once or twice a year for 15 years or more “has the potential for severe systemic toxic effects,” such as corticosteroid-induced osteonecrosis of the femoral head.
Other questions about corticosteroid use for patients with cluster headache remain. These include understanding whether these agents provide better efficacy than occipital nerve injections and determining the optimal verapamil regimen, she noted.
In addition, the risk for oral steroid misuse needs to be studied, she said. She noted that drug misuse is common among patients with cluster headache.
Despite these questions, the results of this new study “provide an important step forward for patients with cluster headache, for whom safe and effective transitional therapies are much needed,” Dr. Ducros wrote.
Dr. Obermann has received fees from Sanofi, Biogen, Novartis, Teva Pharmaceuticals, and Eli Lilly and grants from Allergan and Heel Pharmaceuticals outside of this work. Dr. Ducros has received fees from Amgen, Novartis, Teva, and Eli Lilly; grants from the Programme Hospitalier de Recherche Clinique and from the Appel d’Offre Interne of Montpellier University Hospital; and nonfinancial support from SOS Oxygene.
A version of this article originally appeared on Medscape.com.
Adjunctive oral prednisone appears to significantly reduce cluster headache attacks, new research shows. Results of the multicenter, randomized, double-blind trial show that patients who received the steroid had 25% fewer attacks in the first week of therapy, compared with their counterparts who received placebo.
In addition, more than a third of patients in the prednisone group were pain free, and for almost half, headache frequency was reduced by at least 50% at day 7 of treatment.
These findings provide clear evidence that prednisone, in conjunction with the use of verapamil, is effective in cluster headache, said lead author Mark Obermann, MD, director, Center for Neurology, Asklepios Hospitals Seesen (Germany), and associate professor, University of Duisburg-Essen (Germany).
The key message, he added, is that all patients with cluster headache should receive prednisone at the start of an episode.
The study was published online Nov. 24 in the Lancet Neurology.
‘Suicide headaches’
Cluster headaches are intense unilateral attacks of facial and head pain. They last 15-180 minutes and predominantly affect men. They are accompanied by trigeminal autonomic symptoms and are extremely painful. “They’re referred to as ‘suicide headaches’ because the pain is so severe that patients often report they think about killing themselves to get rid of the pain,” said Dr. Obermann.
The cause is unclear, although there is some evidence that the hypothalamus is involved. The headaches sometimes follow a “strict circadian pattern,” said Dr. Obermann. He noted that the attacks might occur over a few weeks or months and then not return for months or even years.
An estimated 1 in 1,000 people experience cluster headache, but the condition is underrecognized, and research is scarce and poorly funded. Previous research does show that the calcium channel blocker verapamil, which is used to treat high blood pressure, is effective in cluster headache. However, it takes about 14 days to work and has to be slowly titrated because of cardiac side effects, said Dr. Obermann. For these reasons, international guidelines recommend initiating short-term preventive treatment with corticosteroids to suppress, or at least lessen, cluster headache attacks until long-term prevention is effective.
Although some clinicians treat cluster headaches with corticosteroids, others don’t because of a lack of evidence that shows they are effective. “There’s no evidence whatsoever on what the correct dose is or whether it helps at all. This is the gap we wanted to close,” said Dr. Obermann.
The study included 116 adult patients with cluster headache from 10 centers who were experiencing a cluster headache episode and were not taking prophylactic medication.
The trial only included patients who had an attack within 30 days of their current episode. The investigators included this restriction to reduce the possibility of spontaneous remission, which is “a big problem” in cluster headache trials, he said. To confirm that episodes were cluster headache attacks, patients were also required to have moderate to severe pain, indicated by a score of at least 5 on a numerical rating scale in which 0 indicates no pain and 10 indicates the worse imaginable pain.
Participants were allowed to use treatments for acute attack, but these therapies were limited to triptans, high-flow oxygen, intranasal lidocaine, ergotamine, and oral analgesics.
Debilitating pain
Patients were randomly assigned to receive oral prednisone (n = 53) or placebo (n = 56). The study groups were matched with respect to demographic and clinical characteristics. Prednisone was initiated at 100 mg/d for 5 days and was then tapered by 20 mg every 3 days in the active-treatment group. All patients also received oral verapamil at a starting dose of 40 mg three times per day. The dose was increased every 3 days by 40 mg to a maximum of 360 mg/d.
All participants received pantoprazole 20 mg to prevent the gastric side effects of prednisone. An attack was defined as a unilateral headache of moderate to severe intensity. The study lasted 28 days.
The study’s primary outcome was the mean number of cluster headache attacks during the first week of treatment with prednisone versus placebo.
The mean number of attacks during the first week of treatment was 7.1 in the prednisone group and 9.5 in the placebo group, for a difference of –2.4 attacks (95% confidence interval, –4.8 to –0.03; P = .002). “This might not sound like much,” but reducing the number of daily attacks from, say, eight to six “really makes a difference because the attacks are so painful,” said Dr. Obermann.
The prednisone group also came out on top for a number secondary outcomes. After the first 7 days, attacks ceased in 35% of the prednisone group versus 7% in the placebo group.
‘Clear evidence’ of efficacy
About 49% of patients who took prednisone reported a reduction of at least 50% in attack frequency at day 7. By comparison, 15% of patients who received placebo reported such a reduction. The number of cluster attacks at day 28 was less in the prednisone group than in the patients who received placebo.
With respect to treatment effect, the difference between prednisone and placebo gradually lessened over time “in parallel to the verapamil dose reaching its therapeutic effect,” the investigators noted. “Therefore, attack frequency reduction slowly converged between groups,” they added.
The study results provide “clear evidence” and should reassure clinicians that short-term prednisone early in a cluster headache attack is effective, said Dr. Obermann.
Adverse events, which included headache, palpitations, dizziness, and nausea, were as expected and were similar in the two groups. There were only two severe adverse events, both of which occurred in participants in the placebo group.
Dr. Obermann said the investigators were surprised that so many patients in the study were taking analgesics. “Analgesics don’t work in cluster headache; they just don’t work in this kind of pain.”
He noted that prednisone exposure of study patients spanned only 19 days and amounted to only 1,100 mg, which he believes is safe.
The prednisone dose used in the study is “what most clinicians use in clinical practice,” although there have been reports of success using 500 mg of IV prednisone over 5 days, said Dr. Obermann. He added that it would be “interesting to see if 50 mg would be just as good” as a starting dose.
Potential limitations of the study include the fact that the majority of participants were White, so the findings may not be generalizable to other populations.
Long-awaited results
In an accompanying editorial, Anne Ducros, MD, PhD, professor of neurology and director of the Headache Center, Montpellier (France) University Hospital, said the study provides “strong and long-awaited evidence supporting the use of oral steroids as a transitional treatment option.”
The trial “raises many topics for future research,” one of which is the long-term safety of prednisone for patients with cluster headache, said Dr. Ducros. She noted that use of high-dose steroids once or twice a year for 15 years or more “has the potential for severe systemic toxic effects,” such as corticosteroid-induced osteonecrosis of the femoral head.
Other questions about corticosteroid use for patients with cluster headache remain. These include understanding whether these agents provide better efficacy than occipital nerve injections and determining the optimal verapamil regimen, she noted.
In addition, the risk for oral steroid misuse needs to be studied, she said. She noted that drug misuse is common among patients with cluster headache.
Despite these questions, the results of this new study “provide an important step forward for patients with cluster headache, for whom safe and effective transitional therapies are much needed,” Dr. Ducros wrote.
Dr. Obermann has received fees from Sanofi, Biogen, Novartis, Teva Pharmaceuticals, and Eli Lilly and grants from Allergan and Heel Pharmaceuticals outside of this work. Dr. Ducros has received fees from Amgen, Novartis, Teva, and Eli Lilly; grants from the Programme Hospitalier de Recherche Clinique and from the Appel d’Offre Interne of Montpellier University Hospital; and nonfinancial support from SOS Oxygene.
A version of this article originally appeared on Medscape.com.
Adjunctive oral prednisone appears to significantly reduce cluster headache attacks, new research shows. Results of the multicenter, randomized, double-blind trial show that patients who received the steroid had 25% fewer attacks in the first week of therapy, compared with their counterparts who received placebo.
In addition, more than a third of patients in the prednisone group were pain free, and for almost half, headache frequency was reduced by at least 50% at day 7 of treatment.
These findings provide clear evidence that prednisone, in conjunction with the use of verapamil, is effective in cluster headache, said lead author Mark Obermann, MD, director, Center for Neurology, Asklepios Hospitals Seesen (Germany), and associate professor, University of Duisburg-Essen (Germany).
The key message, he added, is that all patients with cluster headache should receive prednisone at the start of an episode.
The study was published online Nov. 24 in the Lancet Neurology.
‘Suicide headaches’
Cluster headaches are intense unilateral attacks of facial and head pain. They last 15-180 minutes and predominantly affect men. They are accompanied by trigeminal autonomic symptoms and are extremely painful. “They’re referred to as ‘suicide headaches’ because the pain is so severe that patients often report they think about killing themselves to get rid of the pain,” said Dr. Obermann.
The cause is unclear, although there is some evidence that the hypothalamus is involved. The headaches sometimes follow a “strict circadian pattern,” said Dr. Obermann. He noted that the attacks might occur over a few weeks or months and then not return for months or even years.
An estimated 1 in 1,000 people experience cluster headache, but the condition is underrecognized, and research is scarce and poorly funded. Previous research does show that the calcium channel blocker verapamil, which is used to treat high blood pressure, is effective in cluster headache. However, it takes about 14 days to work and has to be slowly titrated because of cardiac side effects, said Dr. Obermann. For these reasons, international guidelines recommend initiating short-term preventive treatment with corticosteroids to suppress, or at least lessen, cluster headache attacks until long-term prevention is effective.
Although some clinicians treat cluster headaches with corticosteroids, others don’t because of a lack of evidence that shows they are effective. “There’s no evidence whatsoever on what the correct dose is or whether it helps at all. This is the gap we wanted to close,” said Dr. Obermann.
The study included 116 adult patients with cluster headache from 10 centers who were experiencing a cluster headache episode and were not taking prophylactic medication.
The trial only included patients who had an attack within 30 days of their current episode. The investigators included this restriction to reduce the possibility of spontaneous remission, which is “a big problem” in cluster headache trials, he said. To confirm that episodes were cluster headache attacks, patients were also required to have moderate to severe pain, indicated by a score of at least 5 on a numerical rating scale in which 0 indicates no pain and 10 indicates the worse imaginable pain.
Participants were allowed to use treatments for acute attack, but these therapies were limited to triptans, high-flow oxygen, intranasal lidocaine, ergotamine, and oral analgesics.
Debilitating pain
Patients were randomly assigned to receive oral prednisone (n = 53) or placebo (n = 56). The study groups were matched with respect to demographic and clinical characteristics. Prednisone was initiated at 100 mg/d for 5 days and was then tapered by 20 mg every 3 days in the active-treatment group. All patients also received oral verapamil at a starting dose of 40 mg three times per day. The dose was increased every 3 days by 40 mg to a maximum of 360 mg/d.
All participants received pantoprazole 20 mg to prevent the gastric side effects of prednisone. An attack was defined as a unilateral headache of moderate to severe intensity. The study lasted 28 days.
The study’s primary outcome was the mean number of cluster headache attacks during the first week of treatment with prednisone versus placebo.
The mean number of attacks during the first week of treatment was 7.1 in the prednisone group and 9.5 in the placebo group, for a difference of –2.4 attacks (95% confidence interval, –4.8 to –0.03; P = .002). “This might not sound like much,” but reducing the number of daily attacks from, say, eight to six “really makes a difference because the attacks are so painful,” said Dr. Obermann.
The prednisone group also came out on top for a number secondary outcomes. After the first 7 days, attacks ceased in 35% of the prednisone group versus 7% in the placebo group.
‘Clear evidence’ of efficacy
About 49% of patients who took prednisone reported a reduction of at least 50% in attack frequency at day 7. By comparison, 15% of patients who received placebo reported such a reduction. The number of cluster attacks at day 28 was less in the prednisone group than in the patients who received placebo.
With respect to treatment effect, the difference between prednisone and placebo gradually lessened over time “in parallel to the verapamil dose reaching its therapeutic effect,” the investigators noted. “Therefore, attack frequency reduction slowly converged between groups,” they added.
The study results provide “clear evidence” and should reassure clinicians that short-term prednisone early in a cluster headache attack is effective, said Dr. Obermann.
Adverse events, which included headache, palpitations, dizziness, and nausea, were as expected and were similar in the two groups. There were only two severe adverse events, both of which occurred in participants in the placebo group.
Dr. Obermann said the investigators were surprised that so many patients in the study were taking analgesics. “Analgesics don’t work in cluster headache; they just don’t work in this kind of pain.”
He noted that prednisone exposure of study patients spanned only 19 days and amounted to only 1,100 mg, which he believes is safe.
The prednisone dose used in the study is “what most clinicians use in clinical practice,” although there have been reports of success using 500 mg of IV prednisone over 5 days, said Dr. Obermann. He added that it would be “interesting to see if 50 mg would be just as good” as a starting dose.
Potential limitations of the study include the fact that the majority of participants were White, so the findings may not be generalizable to other populations.
Long-awaited results
In an accompanying editorial, Anne Ducros, MD, PhD, professor of neurology and director of the Headache Center, Montpellier (France) University Hospital, said the study provides “strong and long-awaited evidence supporting the use of oral steroids as a transitional treatment option.”
The trial “raises many topics for future research,” one of which is the long-term safety of prednisone for patients with cluster headache, said Dr. Ducros. She noted that use of high-dose steroids once or twice a year for 15 years or more “has the potential for severe systemic toxic effects,” such as corticosteroid-induced osteonecrosis of the femoral head.
Other questions about corticosteroid use for patients with cluster headache remain. These include understanding whether these agents provide better efficacy than occipital nerve injections and determining the optimal verapamil regimen, she noted.
In addition, the risk for oral steroid misuse needs to be studied, she said. She noted that drug misuse is common among patients with cluster headache.
Despite these questions, the results of this new study “provide an important step forward for patients with cluster headache, for whom safe and effective transitional therapies are much needed,” Dr. Ducros wrote.
Dr. Obermann has received fees from Sanofi, Biogen, Novartis, Teva Pharmaceuticals, and Eli Lilly and grants from Allergan and Heel Pharmaceuticals outside of this work. Dr. Ducros has received fees from Amgen, Novartis, Teva, and Eli Lilly; grants from the Programme Hospitalier de Recherche Clinique and from the Appel d’Offre Interne of Montpellier University Hospital; and nonfinancial support from SOS Oxygene.
A version of this article originally appeared on Medscape.com.
From cradle to grave, alcohol is bad for the brain
There is “compelling” evidence of the harmful effects of alcohol on the brain.
The three periods are:
- Gestation (conception to birth), which is characterized by extensive production, migration, and differentiation of neurons, as well as substantial apoptosis.
- Later adolescence (aged 15-19 years), a period marked by synaptic pruning and increased axonal myelination.
- Older adulthood (aged 65 and beyond), a period associated with brain atrophy. Changes accelerate after age 65, largely driven by decreases in neuron size and reductions in the number of dendritic spines and synapses.
These changes in neurocircuitry could increase sensitivity to the neurotoxic effects of alcohol, Louise Mewton, PhD, of the Center for Healthy Brain Aging, University of New South Wales, Sydney, and colleagues said.
“A life course perspective on brain health supports the formulation of policy and public health interventions to reduce alcohol use and misuse at all ages,” they wrote in an editorial published online Dec. 4 in The BMJ.
Worrisome trends
Research has shown that globally about 10% of pregnant women drink alcohol. In European countries, the rates are much higher than the global average.
Heavy drinking during gestation can cause fetal alcohol spectrum disorder, which is associated with widespread reductions in brain volume and cognitive impairment.
Even low or moderate alcohol consumption during pregnancy is significantly associated with poorer psychological and behavioral outcomes in children, the investigators noted.
In adolescence, more than 20% of 15- to 19-year-olds in European and other high-income countries report at least occasional binge drinking, which is linked to reduced brain volume, poorer white matter development, and deficits in a range of cognitive functions, they added.
In a recent study of older adults, alcohol use disorders emerged as one of the strongest modifiable risk factors for dementia (particularly early-onset dementia), compared with other established risk factors such as high blood pressure and smoking.
Alcohol use disorders are relatively rare in older adults, but even moderate drinking during midlife has been linked to “small but significant” brain volume loss, the authors said.
Dr. Mewton and colleagues said demographic trends may compound the effect of alcohol use on brain health.
They noted that women are now just as likely as men to drink alcohol and suffer alcohol-related problems. Global consumption is forecast to increase further in the next decade.
Although the effects of the COVID-19 pandemic on alcohol intake and related harms remain unclear, alcohol use has increased in the long term after other major public health crises, they added.
Given the data, Dr. Mewton and colleagues called for “an integrated approach” to reducing the harms of alcohol intake at all ages.
“Population-based interventions such as guidelines on low-risk drinking, alcohol pricing policies, and lower drink driving limits need to be accompanied by the development of training and care pathways that consider the human brain at risk throughout life,” they concluded.
The authors have disclosed no relevant financial relationships.
A version of this article originally appeared on Medscape.com.
There is “compelling” evidence of the harmful effects of alcohol on the brain.
The three periods are:
- Gestation (conception to birth), which is characterized by extensive production, migration, and differentiation of neurons, as well as substantial apoptosis.
- Later adolescence (aged 15-19 years), a period marked by synaptic pruning and increased axonal myelination.
- Older adulthood (aged 65 and beyond), a period associated with brain atrophy. Changes accelerate after age 65, largely driven by decreases in neuron size and reductions in the number of dendritic spines and synapses.
These changes in neurocircuitry could increase sensitivity to the neurotoxic effects of alcohol, Louise Mewton, PhD, of the Center for Healthy Brain Aging, University of New South Wales, Sydney, and colleagues said.
“A life course perspective on brain health supports the formulation of policy and public health interventions to reduce alcohol use and misuse at all ages,” they wrote in an editorial published online Dec. 4 in The BMJ.
Worrisome trends
Research has shown that globally about 10% of pregnant women drink alcohol. In European countries, the rates are much higher than the global average.
Heavy drinking during gestation can cause fetal alcohol spectrum disorder, which is associated with widespread reductions in brain volume and cognitive impairment.
Even low or moderate alcohol consumption during pregnancy is significantly associated with poorer psychological and behavioral outcomes in children, the investigators noted.
In adolescence, more than 20% of 15- to 19-year-olds in European and other high-income countries report at least occasional binge drinking, which is linked to reduced brain volume, poorer white matter development, and deficits in a range of cognitive functions, they added.
In a recent study of older adults, alcohol use disorders emerged as one of the strongest modifiable risk factors for dementia (particularly early-onset dementia), compared with other established risk factors such as high blood pressure and smoking.
Alcohol use disorders are relatively rare in older adults, but even moderate drinking during midlife has been linked to “small but significant” brain volume loss, the authors said.
Dr. Mewton and colleagues said demographic trends may compound the effect of alcohol use on brain health.
They noted that women are now just as likely as men to drink alcohol and suffer alcohol-related problems. Global consumption is forecast to increase further in the next decade.
Although the effects of the COVID-19 pandemic on alcohol intake and related harms remain unclear, alcohol use has increased in the long term after other major public health crises, they added.
Given the data, Dr. Mewton and colleagues called for “an integrated approach” to reducing the harms of alcohol intake at all ages.
“Population-based interventions such as guidelines on low-risk drinking, alcohol pricing policies, and lower drink driving limits need to be accompanied by the development of training and care pathways that consider the human brain at risk throughout life,” they concluded.
The authors have disclosed no relevant financial relationships.
A version of this article originally appeared on Medscape.com.
There is “compelling” evidence of the harmful effects of alcohol on the brain.
The three periods are:
- Gestation (conception to birth), which is characterized by extensive production, migration, and differentiation of neurons, as well as substantial apoptosis.
- Later adolescence (aged 15-19 years), a period marked by synaptic pruning and increased axonal myelination.
- Older adulthood (aged 65 and beyond), a period associated with brain atrophy. Changes accelerate after age 65, largely driven by decreases in neuron size and reductions in the number of dendritic spines and synapses.
These changes in neurocircuitry could increase sensitivity to the neurotoxic effects of alcohol, Louise Mewton, PhD, of the Center for Healthy Brain Aging, University of New South Wales, Sydney, and colleagues said.
“A life course perspective on brain health supports the formulation of policy and public health interventions to reduce alcohol use and misuse at all ages,” they wrote in an editorial published online Dec. 4 in The BMJ.
Worrisome trends
Research has shown that globally about 10% of pregnant women drink alcohol. In European countries, the rates are much higher than the global average.
Heavy drinking during gestation can cause fetal alcohol spectrum disorder, which is associated with widespread reductions in brain volume and cognitive impairment.
Even low or moderate alcohol consumption during pregnancy is significantly associated with poorer psychological and behavioral outcomes in children, the investigators noted.
In adolescence, more than 20% of 15- to 19-year-olds in European and other high-income countries report at least occasional binge drinking, which is linked to reduced brain volume, poorer white matter development, and deficits in a range of cognitive functions, they added.
In a recent study of older adults, alcohol use disorders emerged as one of the strongest modifiable risk factors for dementia (particularly early-onset dementia), compared with other established risk factors such as high blood pressure and smoking.
Alcohol use disorders are relatively rare in older adults, but even moderate drinking during midlife has been linked to “small but significant” brain volume loss, the authors said.
Dr. Mewton and colleagues said demographic trends may compound the effect of alcohol use on brain health.
They noted that women are now just as likely as men to drink alcohol and suffer alcohol-related problems. Global consumption is forecast to increase further in the next decade.
Although the effects of the COVID-19 pandemic on alcohol intake and related harms remain unclear, alcohol use has increased in the long term after other major public health crises, they added.
Given the data, Dr. Mewton and colleagues called for “an integrated approach” to reducing the harms of alcohol intake at all ages.
“Population-based interventions such as guidelines on low-risk drinking, alcohol pricing policies, and lower drink driving limits need to be accompanied by the development of training and care pathways that consider the human brain at risk throughout life,” they concluded.
The authors have disclosed no relevant financial relationships.
A version of this article originally appeared on Medscape.com.
COVID-19: Hand sanitizer poisonings soar, psych patients at high risk
Cases of poisoning – intentional and unintentional – from ingestion of alcohol-based hand sanitizer have soared during the COVID-19 pandemic.
In the United Kingdom alone, alcohol-based hand sanitizer poisonings reported to the National Poisons Information Service jumped 157% – from 155 between January 1 and September 16, 2019, to 398 between Jan. 1 and Sept. 14, 2020, new research shows.
More needs to be done to protect those at risk of unintentional and intentional swallowing of alcohol-based hand sanitizer, including children, people with dementia/confusion, and those with mental health issues, according to Georgia Richards, DPhil student, Centre for Evidence-Based Medicine, Nuffield Department of Primary Care Health Sciences, University of Oxford (England).
“If providers are supplying alcohol-based hand sanitizers in the community to reduce the spread of SARS-CoV-2, Ms. Richards said in an interview.
The study was published online Dec. 1 in BMJ Evidence-Based Medicine.
European, U.S. poisoning rates soar
In the paper Ms. Richards described two deaths that occurred in hospitals in England.
In one case, a 30-year-old woman, detained in a psychiatric unit who received the antidepressant venlafaxine was found dead in her hospital bed with a container of hand-sanitizing gel beside her.
“The gel was readily accessible to patients on the ward from a communal dispenser, and patients were allowed to fill cups or other containers with it to keep in their rooms,” Ms. Richards reported.
A postmortem analysis found a high level of alcohol in her blood (214 mg of alcohol in 100 mL of blood). The medical cause of death was listed as “ingestion of alcohol and venlafaxine.” The coroner concluded that the combination of these substances suppressed the patient’s breathing, leading to her death.
The other case involved a 76-year-old man who unintentionally swallowed an unknown quantity of alcohol-based hand-sanitizing foam attached to the foot of his hospital bed.
The patient had a history of agitation and depression and was treated with antidepressants. He had become increasingly confused over the preceding 9 months, possibly because of vascular dementia.
His blood ethanol concentration was 463 mg/dL (100 mmol/L) initially and 354 mg/dL (77mmol/L) 10 hours later. He was admitted to the ICU, where he received lorazepam and haloperidol and treated with ventilation, with a plan to allow the alcohol to be naturally metabolized.
The patient developed complications and died 6 days later. The primary causes of death were bronchopneumonia and acute alcohol toxicity, secondary to acute delirium and coronary artery disease.
Since COVID-19 started, alcohol-based hand sanitizers are among the most sought-after commodities around the world. The volume of these products – now found in homes, hospitals, schools, workplaces, and elsewhere – “may be a cause for concern,” Ms. Richards wrote.
Yet, warnings about the toxicity and lethality of intentional or unintentional ingestion of these products have not been widely disseminated, she noted.
To reduce the risk of harm, Ms. Richards suggested educating the public and health care professionals, improving warning labels on products, and increasing the awareness and reporting of such exposures to public health authorities.
“While governments and public health authorities have successfully heightened our awareness of, and need for, better hand hygiene during the COVID-19 outbreak, they must also make the public aware of the potential harms and encourage the reporting of such harms to poisons information centers,” she noted.
Increases in alcohol-based hand sanitizer poisoning during the pandemic have also been reported in the United States.
The American Association of Poison Control Centers reports that data from the National Poison Data System show 32,892 hand sanitizer exposure cases reported to the 55 U.S. poison control centers from Jan. 1 to Nov. 15, 2020 – an increase of 73%, compared with the same time period during the previous year.
An increase in self-harm
Weighing in on this issue, Robert Bassett, DO, associate medical director of the Poison Control Center at Children’s Hospital of Philadelphia, said in an interview that “cleaning agents and disinfectants have been around for eons and their potential for toxicity hasn’t changed.
“Now with COVID, and this hypervigilance when it comes to cleanliness, there is increased access and the exposure risk has gone up,” he said.
“One of the sad casualties of an overstressed health care system and a globally depressed environment is worsening behavioral health emergencies and, as part of that, the risk of self-harm goes up,” Dr. Bassett added.
“The consensus is that there has been an exacerbation of behavioral health emergencies and behavioral health needs since COVID started and hand sanitizers are readily accessible to someone who may be looking to self-harm,” he said.
This research had no specific funding. Ms. Richards is the editorial registrar of BMJ Evidence Based Medicine and is developing a website to track preventable deaths. Dr. Bassett disclosed no relevant financial relationships.
A version of this article originally appeared on Medscape.com.
Cases of poisoning – intentional and unintentional – from ingestion of alcohol-based hand sanitizer have soared during the COVID-19 pandemic.
In the United Kingdom alone, alcohol-based hand sanitizer poisonings reported to the National Poisons Information Service jumped 157% – from 155 between January 1 and September 16, 2019, to 398 between Jan. 1 and Sept. 14, 2020, new research shows.
More needs to be done to protect those at risk of unintentional and intentional swallowing of alcohol-based hand sanitizer, including children, people with dementia/confusion, and those with mental health issues, according to Georgia Richards, DPhil student, Centre for Evidence-Based Medicine, Nuffield Department of Primary Care Health Sciences, University of Oxford (England).
“If providers are supplying alcohol-based hand sanitizers in the community to reduce the spread of SARS-CoV-2, Ms. Richards said in an interview.
The study was published online Dec. 1 in BMJ Evidence-Based Medicine.
European, U.S. poisoning rates soar
In the paper Ms. Richards described two deaths that occurred in hospitals in England.
In one case, a 30-year-old woman, detained in a psychiatric unit who received the antidepressant venlafaxine was found dead in her hospital bed with a container of hand-sanitizing gel beside her.
“The gel was readily accessible to patients on the ward from a communal dispenser, and patients were allowed to fill cups or other containers with it to keep in their rooms,” Ms. Richards reported.
A postmortem analysis found a high level of alcohol in her blood (214 mg of alcohol in 100 mL of blood). The medical cause of death was listed as “ingestion of alcohol and venlafaxine.” The coroner concluded that the combination of these substances suppressed the patient’s breathing, leading to her death.
The other case involved a 76-year-old man who unintentionally swallowed an unknown quantity of alcohol-based hand-sanitizing foam attached to the foot of his hospital bed.
The patient had a history of agitation and depression and was treated with antidepressants. He had become increasingly confused over the preceding 9 months, possibly because of vascular dementia.
His blood ethanol concentration was 463 mg/dL (100 mmol/L) initially and 354 mg/dL (77mmol/L) 10 hours later. He was admitted to the ICU, where he received lorazepam and haloperidol and treated with ventilation, with a plan to allow the alcohol to be naturally metabolized.
The patient developed complications and died 6 days later. The primary causes of death were bronchopneumonia and acute alcohol toxicity, secondary to acute delirium and coronary artery disease.
Since COVID-19 started, alcohol-based hand sanitizers are among the most sought-after commodities around the world. The volume of these products – now found in homes, hospitals, schools, workplaces, and elsewhere – “may be a cause for concern,” Ms. Richards wrote.
Yet, warnings about the toxicity and lethality of intentional or unintentional ingestion of these products have not been widely disseminated, she noted.
To reduce the risk of harm, Ms. Richards suggested educating the public and health care professionals, improving warning labels on products, and increasing the awareness and reporting of such exposures to public health authorities.
“While governments and public health authorities have successfully heightened our awareness of, and need for, better hand hygiene during the COVID-19 outbreak, they must also make the public aware of the potential harms and encourage the reporting of such harms to poisons information centers,” she noted.
Increases in alcohol-based hand sanitizer poisoning during the pandemic have also been reported in the United States.
The American Association of Poison Control Centers reports that data from the National Poison Data System show 32,892 hand sanitizer exposure cases reported to the 55 U.S. poison control centers from Jan. 1 to Nov. 15, 2020 – an increase of 73%, compared with the same time period during the previous year.
An increase in self-harm
Weighing in on this issue, Robert Bassett, DO, associate medical director of the Poison Control Center at Children’s Hospital of Philadelphia, said in an interview that “cleaning agents and disinfectants have been around for eons and their potential for toxicity hasn’t changed.
“Now with COVID, and this hypervigilance when it comes to cleanliness, there is increased access and the exposure risk has gone up,” he said.
“One of the sad casualties of an overstressed health care system and a globally depressed environment is worsening behavioral health emergencies and, as part of that, the risk of self-harm goes up,” Dr. Bassett added.
“The consensus is that there has been an exacerbation of behavioral health emergencies and behavioral health needs since COVID started and hand sanitizers are readily accessible to someone who may be looking to self-harm,” he said.
This research had no specific funding. Ms. Richards is the editorial registrar of BMJ Evidence Based Medicine and is developing a website to track preventable deaths. Dr. Bassett disclosed no relevant financial relationships.
A version of this article originally appeared on Medscape.com.
Cases of poisoning – intentional and unintentional – from ingestion of alcohol-based hand sanitizer have soared during the COVID-19 pandemic.
In the United Kingdom alone, alcohol-based hand sanitizer poisonings reported to the National Poisons Information Service jumped 157% – from 155 between January 1 and September 16, 2019, to 398 between Jan. 1 and Sept. 14, 2020, new research shows.
More needs to be done to protect those at risk of unintentional and intentional swallowing of alcohol-based hand sanitizer, including children, people with dementia/confusion, and those with mental health issues, according to Georgia Richards, DPhil student, Centre for Evidence-Based Medicine, Nuffield Department of Primary Care Health Sciences, University of Oxford (England).
“If providers are supplying alcohol-based hand sanitizers in the community to reduce the spread of SARS-CoV-2, Ms. Richards said in an interview.
The study was published online Dec. 1 in BMJ Evidence-Based Medicine.
European, U.S. poisoning rates soar
In the paper Ms. Richards described two deaths that occurred in hospitals in England.
In one case, a 30-year-old woman, detained in a psychiatric unit who received the antidepressant venlafaxine was found dead in her hospital bed with a container of hand-sanitizing gel beside her.
“The gel was readily accessible to patients on the ward from a communal dispenser, and patients were allowed to fill cups or other containers with it to keep in their rooms,” Ms. Richards reported.
A postmortem analysis found a high level of alcohol in her blood (214 mg of alcohol in 100 mL of blood). The medical cause of death was listed as “ingestion of alcohol and venlafaxine.” The coroner concluded that the combination of these substances suppressed the patient’s breathing, leading to her death.
The other case involved a 76-year-old man who unintentionally swallowed an unknown quantity of alcohol-based hand-sanitizing foam attached to the foot of his hospital bed.
The patient had a history of agitation and depression and was treated with antidepressants. He had become increasingly confused over the preceding 9 months, possibly because of vascular dementia.
His blood ethanol concentration was 463 mg/dL (100 mmol/L) initially and 354 mg/dL (77mmol/L) 10 hours later. He was admitted to the ICU, where he received lorazepam and haloperidol and treated with ventilation, with a plan to allow the alcohol to be naturally metabolized.
The patient developed complications and died 6 days later. The primary causes of death were bronchopneumonia and acute alcohol toxicity, secondary to acute delirium and coronary artery disease.
Since COVID-19 started, alcohol-based hand sanitizers are among the most sought-after commodities around the world. The volume of these products – now found in homes, hospitals, schools, workplaces, and elsewhere – “may be a cause for concern,” Ms. Richards wrote.
Yet, warnings about the toxicity and lethality of intentional or unintentional ingestion of these products have not been widely disseminated, she noted.
To reduce the risk of harm, Ms. Richards suggested educating the public and health care professionals, improving warning labels on products, and increasing the awareness and reporting of such exposures to public health authorities.
“While governments and public health authorities have successfully heightened our awareness of, and need for, better hand hygiene during the COVID-19 outbreak, they must also make the public aware of the potential harms and encourage the reporting of such harms to poisons information centers,” she noted.
Increases in alcohol-based hand sanitizer poisoning during the pandemic have also been reported in the United States.
The American Association of Poison Control Centers reports that data from the National Poison Data System show 32,892 hand sanitizer exposure cases reported to the 55 U.S. poison control centers from Jan. 1 to Nov. 15, 2020 – an increase of 73%, compared with the same time period during the previous year.
An increase in self-harm
Weighing in on this issue, Robert Bassett, DO, associate medical director of the Poison Control Center at Children’s Hospital of Philadelphia, said in an interview that “cleaning agents and disinfectants have been around for eons and their potential for toxicity hasn’t changed.
“Now with COVID, and this hypervigilance when it comes to cleanliness, there is increased access and the exposure risk has gone up,” he said.
“One of the sad casualties of an overstressed health care system and a globally depressed environment is worsening behavioral health emergencies and, as part of that, the risk of self-harm goes up,” Dr. Bassett added.
“The consensus is that there has been an exacerbation of behavioral health emergencies and behavioral health needs since COVID started and hand sanitizers are readily accessible to someone who may be looking to self-harm,” he said.
This research had no specific funding. Ms. Richards is the editorial registrar of BMJ Evidence Based Medicine and is developing a website to track preventable deaths. Dr. Bassett disclosed no relevant financial relationships.
A version of this article originally appeared on Medscape.com.
An alternative path to recertification
Recertification will include physicians who were initially board certified with UCNS in the subspecialties of autonomic disorders, behavioral neurology and neuropsychiatry, clinical neuromuscular pathology, geriatric neurology, headache medicine, neurocritical care, neuroimaging, and neuro-oncology.
In 2020, UCNS transitioned to a new continuous-certification (C-cert) model that requires its diplomates to pay an annual fee of $175 and complete a 25-question online quiz based on preselected journal articles with an 80% passing grade. In a press release outlining the details of the new C-cert program, UCNS said that diplomates began the transition last year by “attesting they have participated in subspecialty-specific continuing medical education (CME) requirements from the time their most recent certificate was issued through 2019.” Diplomates have a 2-year window, which began in 2019, to meet these transitional CME requirements and complete an attestation statement before their certification lapses. “Diplomates with a status of ‘meeting requirements’ will be issued a replacement certificate that shows their original certification date and will reflect there is no expiration date after they pay the first annual C-cert fee in 2020,” UCNS said in the press release.
“It is unfortunate that despite requests from diplomates and other stakeholders, UCNS has decided to impose new requirements and additional fees on diplomates who have unexpired certificates based on passing an examination that granted a 10-year certification,” Paul G. Mathew, MD, assistant professor of neurology at Harvard Medical School in Boston and Director of Legislative Affairs at NBPAS, said in an interview. “A one-size-fits-all approach for learning with preselected articles is not ideal, and physicians should be able to choose CME and other learning activities that best suit their individual interests and practice.”
The added requirements and fees have caused some UCNS diplomates to consider letting their certification lapse, Dr. Mathew said, but the NBPAS decision offers them a new path to recertification. “Many physicians who would have otherwise let their certification lapse and would no longer be considered board certified in headache medicine and other UCNS subspecialties will now have the option to recertify with NBPAS,” he said.
NBPAS was formed in 2014 in response to controversial American Board of Medical Specialties Maintenance of Certification (MOC) programs. NBPAS recertifies diplomates of all specialties and subspecialties offered by the ABMS and its member boards, including board certification in neurology and neurologic subspecialties offered by the American Board of Psychiatry and Neurology.
Board recertification with NBPAS requires an unrestricted license to practice medicine in the United States, an initial certification with ABPN, the American Osteopathic Association, and/or UCNS, a medical staff appointment/membership in good standing, active hospital privileges based on specialty, and 50 hours of relevant CME credits every 2 years.
“Although MOC compliance is not required for licensure, the vast majority of insurance carriers in the United States require to some extent that their physicians be MOC compliant. As such, the ABMS has a monopoly in that a physician cannot practice medicine without complying with MOC,” Dr. Mathew said. “That’s very gradually changing.”
So far, 13 states have passed legislation limiting ABMS MOC compliance as a requirement for credentialing or licensure, and 136 healthcare institutions have recognized NBPAS as a pathway for physician credentialing, according to an NBPAS press release.
Changing the rules
Alan Rapoport, MD, was asked to comment on the recertification situtaion. Dr. Rapoport is clinical professor of neurology at UCLA and the Editor in Chief of Neurology Reviews. “As Dr. Mathew aptly states, it is unfortunate that despite requests from diplomates and other stakeholders, UCNS has decided to impose new requirements and additional fees on diplomates who have unexpired certificates based on passing an examination that granted a 10-year certification,”
For context, Dr. Rapoport explained what has happened to him and about 200 neurologists and a few other specialists who took the first UCNS certifying exam in Headache Medicine. “I sat for the first exam in a testing center in 2006, after paying a large fee. I passed and was granted a certificate for a 10-year certification in Headache Medicine. Prior to the expiration of that certificate, I was told I had to pay about $1,800 and take a similar examination to certify for another 10 years. I was not sure I needed to do that, but I did so anyway and passed and was granted a new, dated certificate for another 10 years of certification in Headache Medicine. Shortly after that I began to get notices from UCNS saying that they were changing their certification process and I would soon have to read their designated articles, take an examination on that literature, pay $175 for this privilege of C-Cert yearly, all in spite of the fact that I had a valid certificate for 10 years of certification.”
After complaints from Dr. Rapoport and many others, “UCNS said we would only have to do this when we had 5 years left on our certification. When they advertised this new C-Cert plan on the AAN Headache Listserv, even though advertising was against the rules of the Listserv, I complained about it saying we had paid for a 10-year certification. Their response was to abruptly take me off the Listserv. Then they temporarily shut it down when others agreed with what I had written.”
Dr. Rapoport has the certificate that proves that he has 6 years left on his certification, but UCNS will not recognize this, he said. “I believe that to be unfair, unethical, and probably illegal, as do many senior Headache specialists in the country who have the same issue. The attorney for the UCNS, who is also the attorney for the AAN, has disregarded our objections to this move.”
Now the NBPAS will be recertifying Headache Medicine doctors and those of other specialties who are in a similar situation and do not want to pay for the privilege of taking exams yearly when they have already been certified. “I expect many specialists will switch to this new way of certifying,” Dr. Rapoport said.
“I believe the UCNS has cheapened the value of their certifications by not honoring them,” Dr. Rapoort said.
Dr. Mathew reports that he collects no salary for his role with NBPAS, but receives reimbursement for travel expenses, and occasionally receives honoraria for speaking on behalf of NBPAS.
Recertification will include physicians who were initially board certified with UCNS in the subspecialties of autonomic disorders, behavioral neurology and neuropsychiatry, clinical neuromuscular pathology, geriatric neurology, headache medicine, neurocritical care, neuroimaging, and neuro-oncology.
In 2020, UCNS transitioned to a new continuous-certification (C-cert) model that requires its diplomates to pay an annual fee of $175 and complete a 25-question online quiz based on preselected journal articles with an 80% passing grade. In a press release outlining the details of the new C-cert program, UCNS said that diplomates began the transition last year by “attesting they have participated in subspecialty-specific continuing medical education (CME) requirements from the time their most recent certificate was issued through 2019.” Diplomates have a 2-year window, which began in 2019, to meet these transitional CME requirements and complete an attestation statement before their certification lapses. “Diplomates with a status of ‘meeting requirements’ will be issued a replacement certificate that shows their original certification date and will reflect there is no expiration date after they pay the first annual C-cert fee in 2020,” UCNS said in the press release.
“It is unfortunate that despite requests from diplomates and other stakeholders, UCNS has decided to impose new requirements and additional fees on diplomates who have unexpired certificates based on passing an examination that granted a 10-year certification,” Paul G. Mathew, MD, assistant professor of neurology at Harvard Medical School in Boston and Director of Legislative Affairs at NBPAS, said in an interview. “A one-size-fits-all approach for learning with preselected articles is not ideal, and physicians should be able to choose CME and other learning activities that best suit their individual interests and practice.”
The added requirements and fees have caused some UCNS diplomates to consider letting their certification lapse, Dr. Mathew said, but the NBPAS decision offers them a new path to recertification. “Many physicians who would have otherwise let their certification lapse and would no longer be considered board certified in headache medicine and other UCNS subspecialties will now have the option to recertify with NBPAS,” he said.
NBPAS was formed in 2014 in response to controversial American Board of Medical Specialties Maintenance of Certification (MOC) programs. NBPAS recertifies diplomates of all specialties and subspecialties offered by the ABMS and its member boards, including board certification in neurology and neurologic subspecialties offered by the American Board of Psychiatry and Neurology.
Board recertification with NBPAS requires an unrestricted license to practice medicine in the United States, an initial certification with ABPN, the American Osteopathic Association, and/or UCNS, a medical staff appointment/membership in good standing, active hospital privileges based on specialty, and 50 hours of relevant CME credits every 2 years.
“Although MOC compliance is not required for licensure, the vast majority of insurance carriers in the United States require to some extent that their physicians be MOC compliant. As such, the ABMS has a monopoly in that a physician cannot practice medicine without complying with MOC,” Dr. Mathew said. “That’s very gradually changing.”
So far, 13 states have passed legislation limiting ABMS MOC compliance as a requirement for credentialing or licensure, and 136 healthcare institutions have recognized NBPAS as a pathway for physician credentialing, according to an NBPAS press release.
Changing the rules
Alan Rapoport, MD, was asked to comment on the recertification situtaion. Dr. Rapoport is clinical professor of neurology at UCLA and the Editor in Chief of Neurology Reviews. “As Dr. Mathew aptly states, it is unfortunate that despite requests from diplomates and other stakeholders, UCNS has decided to impose new requirements and additional fees on diplomates who have unexpired certificates based on passing an examination that granted a 10-year certification,”
For context, Dr. Rapoport explained what has happened to him and about 200 neurologists and a few other specialists who took the first UCNS certifying exam in Headache Medicine. “I sat for the first exam in a testing center in 2006, after paying a large fee. I passed and was granted a certificate for a 10-year certification in Headache Medicine. Prior to the expiration of that certificate, I was told I had to pay about $1,800 and take a similar examination to certify for another 10 years. I was not sure I needed to do that, but I did so anyway and passed and was granted a new, dated certificate for another 10 years of certification in Headache Medicine. Shortly after that I began to get notices from UCNS saying that they were changing their certification process and I would soon have to read their designated articles, take an examination on that literature, pay $175 for this privilege of C-Cert yearly, all in spite of the fact that I had a valid certificate for 10 years of certification.”
After complaints from Dr. Rapoport and many others, “UCNS said we would only have to do this when we had 5 years left on our certification. When they advertised this new C-Cert plan on the AAN Headache Listserv, even though advertising was against the rules of the Listserv, I complained about it saying we had paid for a 10-year certification. Their response was to abruptly take me off the Listserv. Then they temporarily shut it down when others agreed with what I had written.”
Dr. Rapoport has the certificate that proves that he has 6 years left on his certification, but UCNS will not recognize this, he said. “I believe that to be unfair, unethical, and probably illegal, as do many senior Headache specialists in the country who have the same issue. The attorney for the UCNS, who is also the attorney for the AAN, has disregarded our objections to this move.”
Now the NBPAS will be recertifying Headache Medicine doctors and those of other specialties who are in a similar situation and do not want to pay for the privilege of taking exams yearly when they have already been certified. “I expect many specialists will switch to this new way of certifying,” Dr. Rapoport said.
“I believe the UCNS has cheapened the value of their certifications by not honoring them,” Dr. Rapoort said.
Dr. Mathew reports that he collects no salary for his role with NBPAS, but receives reimbursement for travel expenses, and occasionally receives honoraria for speaking on behalf of NBPAS.
Recertification will include physicians who were initially board certified with UCNS in the subspecialties of autonomic disorders, behavioral neurology and neuropsychiatry, clinical neuromuscular pathology, geriatric neurology, headache medicine, neurocritical care, neuroimaging, and neuro-oncology.
In 2020, UCNS transitioned to a new continuous-certification (C-cert) model that requires its diplomates to pay an annual fee of $175 and complete a 25-question online quiz based on preselected journal articles with an 80% passing grade. In a press release outlining the details of the new C-cert program, UCNS said that diplomates began the transition last year by “attesting they have participated in subspecialty-specific continuing medical education (CME) requirements from the time their most recent certificate was issued through 2019.” Diplomates have a 2-year window, which began in 2019, to meet these transitional CME requirements and complete an attestation statement before their certification lapses. “Diplomates with a status of ‘meeting requirements’ will be issued a replacement certificate that shows their original certification date and will reflect there is no expiration date after they pay the first annual C-cert fee in 2020,” UCNS said in the press release.
“It is unfortunate that despite requests from diplomates and other stakeholders, UCNS has decided to impose new requirements and additional fees on diplomates who have unexpired certificates based on passing an examination that granted a 10-year certification,” Paul G. Mathew, MD, assistant professor of neurology at Harvard Medical School in Boston and Director of Legislative Affairs at NBPAS, said in an interview. “A one-size-fits-all approach for learning with preselected articles is not ideal, and physicians should be able to choose CME and other learning activities that best suit their individual interests and practice.”
The added requirements and fees have caused some UCNS diplomates to consider letting their certification lapse, Dr. Mathew said, but the NBPAS decision offers them a new path to recertification. “Many physicians who would have otherwise let their certification lapse and would no longer be considered board certified in headache medicine and other UCNS subspecialties will now have the option to recertify with NBPAS,” he said.
NBPAS was formed in 2014 in response to controversial American Board of Medical Specialties Maintenance of Certification (MOC) programs. NBPAS recertifies diplomates of all specialties and subspecialties offered by the ABMS and its member boards, including board certification in neurology and neurologic subspecialties offered by the American Board of Psychiatry and Neurology.
Board recertification with NBPAS requires an unrestricted license to practice medicine in the United States, an initial certification with ABPN, the American Osteopathic Association, and/or UCNS, a medical staff appointment/membership in good standing, active hospital privileges based on specialty, and 50 hours of relevant CME credits every 2 years.
“Although MOC compliance is not required for licensure, the vast majority of insurance carriers in the United States require to some extent that their physicians be MOC compliant. As such, the ABMS has a monopoly in that a physician cannot practice medicine without complying with MOC,” Dr. Mathew said. “That’s very gradually changing.”
So far, 13 states have passed legislation limiting ABMS MOC compliance as a requirement for credentialing or licensure, and 136 healthcare institutions have recognized NBPAS as a pathway for physician credentialing, according to an NBPAS press release.
Changing the rules
Alan Rapoport, MD, was asked to comment on the recertification situtaion. Dr. Rapoport is clinical professor of neurology at UCLA and the Editor in Chief of Neurology Reviews. “As Dr. Mathew aptly states, it is unfortunate that despite requests from diplomates and other stakeholders, UCNS has decided to impose new requirements and additional fees on diplomates who have unexpired certificates based on passing an examination that granted a 10-year certification,”
For context, Dr. Rapoport explained what has happened to him and about 200 neurologists and a few other specialists who took the first UCNS certifying exam in Headache Medicine. “I sat for the first exam in a testing center in 2006, after paying a large fee. I passed and was granted a certificate for a 10-year certification in Headache Medicine. Prior to the expiration of that certificate, I was told I had to pay about $1,800 and take a similar examination to certify for another 10 years. I was not sure I needed to do that, but I did so anyway and passed and was granted a new, dated certificate for another 10 years of certification in Headache Medicine. Shortly after that I began to get notices from UCNS saying that they were changing their certification process and I would soon have to read their designated articles, take an examination on that literature, pay $175 for this privilege of C-Cert yearly, all in spite of the fact that I had a valid certificate for 10 years of certification.”
After complaints from Dr. Rapoport and many others, “UCNS said we would only have to do this when we had 5 years left on our certification. When they advertised this new C-Cert plan on the AAN Headache Listserv, even though advertising was against the rules of the Listserv, I complained about it saying we had paid for a 10-year certification. Their response was to abruptly take me off the Listserv. Then they temporarily shut it down when others agreed with what I had written.”
Dr. Rapoport has the certificate that proves that he has 6 years left on his certification, but UCNS will not recognize this, he said. “I believe that to be unfair, unethical, and probably illegal, as do many senior Headache specialists in the country who have the same issue. The attorney for the UCNS, who is also the attorney for the AAN, has disregarded our objections to this move.”
Now the NBPAS will be recertifying Headache Medicine doctors and those of other specialties who are in a similar situation and do not want to pay for the privilege of taking exams yearly when they have already been certified. “I expect many specialists will switch to this new way of certifying,” Dr. Rapoport said.
“I believe the UCNS has cheapened the value of their certifications by not honoring them,” Dr. Rapoort said.
Dr. Mathew reports that he collects no salary for his role with NBPAS, but receives reimbursement for travel expenses, and occasionally receives honoraria for speaking on behalf of NBPAS.
Intensive glucose control after acute ischemic stroke does not improve functional outcomes
Background: Higher glucose immediately following acute ischemic stroke is known to be associated with poor outcomes. Patients with elevated glucoses in the aftermath of an acute ischemic stroke are more likely to have expansion of ischemic area and are more likely to have hemorrhagic conversion.
Study design: Randomized, controlled trial, with blinded outcome assessment.
Setting: 63 sites in the United States.
Synopsis: A total of 1,151 patients were randomized to either intensive (goal blood glucose, 80-130 mg/dL) or standard (goal blood glucose, 80-179 mg/dL) glucose control for up to the first 72 hours after presenting with acute ischemic stroke. Patients in the intensive control group were given continuous IV insulin and patients in the standard control group were given subcutaneous sliding. There was no difference between groups (intensive vs. standard) with regards to the primary outcome, which was the percentage of patients who achieved a modified Rankin Score at 90 days of 0-2 (20.5% vs 21.6%; adjusted relative risk, 0.97; 95% confidence interval, 0.87-1.08; P = .55). Severe hypoglycemia (blood glucose of less than 40 mg/dL) occurred in the intensive control group only. The American Heart Association/American Stroke Association guidelines support target blood glucose of 140-180 mg/dL, though limited evidence to support this guideline is noted.
Bottom line: Patients who underwent intensive glucose control regimens following acute ischemic stroke did not have significantly different functional outcomes at 90 days than those who had standard glucose control therapy.
Citation: Johnston KC et al. Intensive vs. standard treatment of hyperglycemia and functional outcome in patients with acute ischemic stroke: The SHINE randomized clinical trial. JAMA. 2019 Jul 23/30;322(4):326-35.
Dr. Fritz is assistant professor of medicine and the director of hospitalist operations at St. Louis University School of Medicine.
Background: Higher glucose immediately following acute ischemic stroke is known to be associated with poor outcomes. Patients with elevated glucoses in the aftermath of an acute ischemic stroke are more likely to have expansion of ischemic area and are more likely to have hemorrhagic conversion.
Study design: Randomized, controlled trial, with blinded outcome assessment.
Setting: 63 sites in the United States.
Synopsis: A total of 1,151 patients were randomized to either intensive (goal blood glucose, 80-130 mg/dL) or standard (goal blood glucose, 80-179 mg/dL) glucose control for up to the first 72 hours after presenting with acute ischemic stroke. Patients in the intensive control group were given continuous IV insulin and patients in the standard control group were given subcutaneous sliding. There was no difference between groups (intensive vs. standard) with regards to the primary outcome, which was the percentage of patients who achieved a modified Rankin Score at 90 days of 0-2 (20.5% vs 21.6%; adjusted relative risk, 0.97; 95% confidence interval, 0.87-1.08; P = .55). Severe hypoglycemia (blood glucose of less than 40 mg/dL) occurred in the intensive control group only. The American Heart Association/American Stroke Association guidelines support target blood glucose of 140-180 mg/dL, though limited evidence to support this guideline is noted.
Bottom line: Patients who underwent intensive glucose control regimens following acute ischemic stroke did not have significantly different functional outcomes at 90 days than those who had standard glucose control therapy.
Citation: Johnston KC et al. Intensive vs. standard treatment of hyperglycemia and functional outcome in patients with acute ischemic stroke: The SHINE randomized clinical trial. JAMA. 2019 Jul 23/30;322(4):326-35.
Dr. Fritz is assistant professor of medicine and the director of hospitalist operations at St. Louis University School of Medicine.
Background: Higher glucose immediately following acute ischemic stroke is known to be associated with poor outcomes. Patients with elevated glucoses in the aftermath of an acute ischemic stroke are more likely to have expansion of ischemic area and are more likely to have hemorrhagic conversion.
Study design: Randomized, controlled trial, with blinded outcome assessment.
Setting: 63 sites in the United States.
Synopsis: A total of 1,151 patients were randomized to either intensive (goal blood glucose, 80-130 mg/dL) or standard (goal blood glucose, 80-179 mg/dL) glucose control for up to the first 72 hours after presenting with acute ischemic stroke. Patients in the intensive control group were given continuous IV insulin and patients in the standard control group were given subcutaneous sliding. There was no difference between groups (intensive vs. standard) with regards to the primary outcome, which was the percentage of patients who achieved a modified Rankin Score at 90 days of 0-2 (20.5% vs 21.6%; adjusted relative risk, 0.97; 95% confidence interval, 0.87-1.08; P = .55). Severe hypoglycemia (blood glucose of less than 40 mg/dL) occurred in the intensive control group only. The American Heart Association/American Stroke Association guidelines support target blood glucose of 140-180 mg/dL, though limited evidence to support this guideline is noted.
Bottom line: Patients who underwent intensive glucose control regimens following acute ischemic stroke did not have significantly different functional outcomes at 90 days than those who had standard glucose control therapy.
Citation: Johnston KC et al. Intensive vs. standard treatment of hyperglycemia and functional outcome in patients with acute ischemic stroke: The SHINE randomized clinical trial. JAMA. 2019 Jul 23/30;322(4):326-35.
Dr. Fritz is assistant professor of medicine and the director of hospitalist operations at St. Louis University School of Medicine.
Blood vessels in the eye may diagnose Parkinson’s disease
new research shows. Using an advanced machine-learning algorithm and fundus eye images, which depict the small blood vessels and more at the back of the eye, investigators are able to classify patients with Parkinson’s disease compared against a control group. “We discovered that micro blood vessels decreased in both size and number in patients with Parkinson’s disease,” said Maximillian Diaz, a PhD student at the University of Florida, Gainesville.
The simple eye examination may offer a way to diagnose Parkinson’s early in the disease progression.
Mr. Diaz said the test could be incorporated to a patient’s annual physical examination not only to look for Parkinson’s disease but also for other neurological diseases. Researchers at the University of Florida are also looking at whether the same technique can diagnose Alzheimer’s disease.
The beauty of this is that “the technique is simple,” he said. “What surprised us is that we can do this with fundus images, which can be taken in a clinical setting with a lens that attaches to your smartphone. It’s affordable and portable and it takes less than a minute.”
Machine learning on fundus eye images
Researchers, under the direction of Ruogu Fang, PhD, director of the J. Crayton Pruitt Department of Biomedical Engineering’s Smart Medical Informatics Learning and Evaluation Lab (SMILE) at the University of Florida, Gainesville, collected fundus eye images from 476 age- and gender-matched individuals, 238 diagnosed with Parkinson’s disease and 238 control group images. Another set of 100 images were collected from the University of Florida database using green color channels (UKB-Green and UF-UKB Green) and used to improve vessel segmentation. Of these, 28 were controls and 72 from patients with Parkinson’s disease. Researchers added 44 more control images from the U.K. Biobank to complete the second age- and gender-matched dataset.
“We used 80% of the images to develop the machine-learning network,” Mr. Diaz said. The other 20% of images, which were new to the algorithm, were used to test it, to determine true or false, Parkinson’s disease or control?
“We were able to achieve an accuracy of 85%,” Mr. Diaz said. Currently, there are no biomarkers to diagnose Parkinson’s disease. The disease is only recognizable once 80% of dopaminergic cells have already decayed. “Clinically, there’s no way to tell how long someone has had it,” Mr. Diaz said. He hopes that by doing additional research and testing earlier – with a longitudinal study of images – a pattern may be detected to better predict disease.
Eye vasculature reveals disease
“This concept [studying eye vasculature] is getting a lot of interest right now,” said Anant Madabhushi, PhD, Case Western Reserve University, Cleveland. “The eye is the proverbial window to the soul, and in this case, shows what’s happening in rest of the body.”
Dr. Madabhushi, who was not involved in the Parkinson’s research, has also been working with a team in Cleveland to look at how vessels in the eye predict response to drug therapies in diabetic macular edema, including treatment durability. “What we’ve found is the more twisted the vessels, the more constricted, and the less likely the person would respond to therapy,” he said, adding that studying the pathology of the eye makes a lot of sense. “The arrangement of vessels in the eye are likely to have implications in all kinds of diseases.”
Since Parkinson’s disease does not have any biomarkers, this technology could be very useful in diagnosis. “With specific quantitative measurements, we could have computational imaging biomarkers to predict the risk of onset of Parkinson’s, and the prognosis of disease. That’s the true utility of this approach,” he said.
Mr. Diaz disclosed no relevant financial relationships. Dr. Madabhushi has consulted for Aiforia and has had research sponsored by AstraZeneca, Bristol-Myers Squibb, and Boehringer Ingelheim.
A version of this article originally appeared on Medscape.com.
new research shows. Using an advanced machine-learning algorithm and fundus eye images, which depict the small blood vessels and more at the back of the eye, investigators are able to classify patients with Parkinson’s disease compared against a control group. “We discovered that micro blood vessels decreased in both size and number in patients with Parkinson’s disease,” said Maximillian Diaz, a PhD student at the University of Florida, Gainesville.
The simple eye examination may offer a way to diagnose Parkinson’s early in the disease progression.
Mr. Diaz said the test could be incorporated to a patient’s annual physical examination not only to look for Parkinson’s disease but also for other neurological diseases. Researchers at the University of Florida are also looking at whether the same technique can diagnose Alzheimer’s disease.
The beauty of this is that “the technique is simple,” he said. “What surprised us is that we can do this with fundus images, which can be taken in a clinical setting with a lens that attaches to your smartphone. It’s affordable and portable and it takes less than a minute.”
Machine learning on fundus eye images
Researchers, under the direction of Ruogu Fang, PhD, director of the J. Crayton Pruitt Department of Biomedical Engineering’s Smart Medical Informatics Learning and Evaluation Lab (SMILE) at the University of Florida, Gainesville, collected fundus eye images from 476 age- and gender-matched individuals, 238 diagnosed with Parkinson’s disease and 238 control group images. Another set of 100 images were collected from the University of Florida database using green color channels (UKB-Green and UF-UKB Green) and used to improve vessel segmentation. Of these, 28 were controls and 72 from patients with Parkinson’s disease. Researchers added 44 more control images from the U.K. Biobank to complete the second age- and gender-matched dataset.
“We used 80% of the images to develop the machine-learning network,” Mr. Diaz said. The other 20% of images, which were new to the algorithm, were used to test it, to determine true or false, Parkinson’s disease or control?
“We were able to achieve an accuracy of 85%,” Mr. Diaz said. Currently, there are no biomarkers to diagnose Parkinson’s disease. The disease is only recognizable once 80% of dopaminergic cells have already decayed. “Clinically, there’s no way to tell how long someone has had it,” Mr. Diaz said. He hopes that by doing additional research and testing earlier – with a longitudinal study of images – a pattern may be detected to better predict disease.
Eye vasculature reveals disease
“This concept [studying eye vasculature] is getting a lot of interest right now,” said Anant Madabhushi, PhD, Case Western Reserve University, Cleveland. “The eye is the proverbial window to the soul, and in this case, shows what’s happening in rest of the body.”
Dr. Madabhushi, who was not involved in the Parkinson’s research, has also been working with a team in Cleveland to look at how vessels in the eye predict response to drug therapies in diabetic macular edema, including treatment durability. “What we’ve found is the more twisted the vessels, the more constricted, and the less likely the person would respond to therapy,” he said, adding that studying the pathology of the eye makes a lot of sense. “The arrangement of vessels in the eye are likely to have implications in all kinds of diseases.”
Since Parkinson’s disease does not have any biomarkers, this technology could be very useful in diagnosis. “With specific quantitative measurements, we could have computational imaging biomarkers to predict the risk of onset of Parkinson’s, and the prognosis of disease. That’s the true utility of this approach,” he said.
Mr. Diaz disclosed no relevant financial relationships. Dr. Madabhushi has consulted for Aiforia and has had research sponsored by AstraZeneca, Bristol-Myers Squibb, and Boehringer Ingelheim.
A version of this article originally appeared on Medscape.com.
new research shows. Using an advanced machine-learning algorithm and fundus eye images, which depict the small blood vessels and more at the back of the eye, investigators are able to classify patients with Parkinson’s disease compared against a control group. “We discovered that micro blood vessels decreased in both size and number in patients with Parkinson’s disease,” said Maximillian Diaz, a PhD student at the University of Florida, Gainesville.
The simple eye examination may offer a way to diagnose Parkinson’s early in the disease progression.
Mr. Diaz said the test could be incorporated to a patient’s annual physical examination not only to look for Parkinson’s disease but also for other neurological diseases. Researchers at the University of Florida are also looking at whether the same technique can diagnose Alzheimer’s disease.
The beauty of this is that “the technique is simple,” he said. “What surprised us is that we can do this with fundus images, which can be taken in a clinical setting with a lens that attaches to your smartphone. It’s affordable and portable and it takes less than a minute.”
Machine learning on fundus eye images
Researchers, under the direction of Ruogu Fang, PhD, director of the J. Crayton Pruitt Department of Biomedical Engineering’s Smart Medical Informatics Learning and Evaluation Lab (SMILE) at the University of Florida, Gainesville, collected fundus eye images from 476 age- and gender-matched individuals, 238 diagnosed with Parkinson’s disease and 238 control group images. Another set of 100 images were collected from the University of Florida database using green color channels (UKB-Green and UF-UKB Green) and used to improve vessel segmentation. Of these, 28 were controls and 72 from patients with Parkinson’s disease. Researchers added 44 more control images from the U.K. Biobank to complete the second age- and gender-matched dataset.
“We used 80% of the images to develop the machine-learning network,” Mr. Diaz said. The other 20% of images, which were new to the algorithm, were used to test it, to determine true or false, Parkinson’s disease or control?
“We were able to achieve an accuracy of 85%,” Mr. Diaz said. Currently, there are no biomarkers to diagnose Parkinson’s disease. The disease is only recognizable once 80% of dopaminergic cells have already decayed. “Clinically, there’s no way to tell how long someone has had it,” Mr. Diaz said. He hopes that by doing additional research and testing earlier – with a longitudinal study of images – a pattern may be detected to better predict disease.
Eye vasculature reveals disease
“This concept [studying eye vasculature] is getting a lot of interest right now,” said Anant Madabhushi, PhD, Case Western Reserve University, Cleveland. “The eye is the proverbial window to the soul, and in this case, shows what’s happening in rest of the body.”
Dr. Madabhushi, who was not involved in the Parkinson’s research, has also been working with a team in Cleveland to look at how vessels in the eye predict response to drug therapies in diabetic macular edema, including treatment durability. “What we’ve found is the more twisted the vessels, the more constricted, and the less likely the person would respond to therapy,” he said, adding that studying the pathology of the eye makes a lot of sense. “The arrangement of vessels in the eye are likely to have implications in all kinds of diseases.”
Since Parkinson’s disease does not have any biomarkers, this technology could be very useful in diagnosis. “With specific quantitative measurements, we could have computational imaging biomarkers to predict the risk of onset of Parkinson’s, and the prognosis of disease. That’s the true utility of this approach,” he said.
Mr. Diaz disclosed no relevant financial relationships. Dr. Madabhushi has consulted for Aiforia and has had research sponsored by AstraZeneca, Bristol-Myers Squibb, and Boehringer Ingelheim.
A version of this article originally appeared on Medscape.com.
First guidelines for keto diets in adults with epilepsy released
Just as in children with epilepsy, ketogenic diet therapies can be safe and effective in adults with epilepsy but should only be undertaken with the support of medical professionals trained in their use, the group said.
“Motivation is the key to successful ketogenic diet therapy adherence,” first author Mackenzie Cervenka, MD, director of the Adult Epilepsy Diet Center and associate professor of neurology at Johns Hopkins University, Baltimore, said in an interview.
“Patients who are autonomous require self-motivation and having a strong support structure is important as well. For those patients who are dependents, their caregivers need to be motivated to manage their diet,” said Dr. Cervenka.
The guidelines were published online Oct. 30 in Neurology Clinical Practice.
Novel in adult neurology
Ketogenic diet therapies are high-fat, low-carbohydrate, and adequate-protein diets that induce fat metabolism and ketone production. Despite its use as an effective antiseizure therapy since the 1920s, ketogenic diet therapies remain novel in adult neurology.
Furthermore, while there are established guidelines for ketogenic diet therapies to reduce seizures in children, there were no formal recommendations for adults, until now.
Drawing on the experience of experts at 20 centers using ketogenic diet therapies in more than 2,100 adults with epilepsy in 10 countries, Dr. Cervenka and an international team developed recommendations on use of ketogenic diet therapies in adults.
The panel noted, “with a relatively mild side effect profile and the potential to reduce seizures in nearly 60% of adults with drug-resistant epilepsy, ketogenic diet therapies should be part of the repertoire of available options.”
Ketogenic diet therapies are appropriate to offer to adults with seizure types and epilepsy syndromes for which these treatments are known to be effective in children, they said. These include tuberous sclerosis complex, Rett syndrome, Lennox-Gastaut syndrome, glucose transporter type 1 deficiency syndrome, genetic generalized epilepsies, and focal epilepsies caused by underlying migrational disorders and resistant to antiseizure medication.
However, adults with drug-resistant focal epilepsy should be offered surgical evaluation first, given the higher anticipated rate of seizure freedom via this route, the panel said.
A focus on compliance
Experts at nearly all of the centers report using two or more ketogenic diet therapies. Ninety percent use the modified Atkins diet, 84% use the classic ketogenic diet, and 63% use the modified ketogenic diet and/or low glycemic index treatment. More than half of the centers (58%) use medium-chain triglyceride oil in combination with another ketogenic diet therapy to boost ketone body production.
The most important factors influencing the choice of ketogenic diet therapy are ease of diet application for the patient (100%) and patient and/or caregiver preference, home setting, and mode of feeding (90% each).
The panel recommended that ketogenic diet therapies be tailored to fit the needs of the individual, taking into account his or her physical and mental characteristics, underlying medical conditions, food preferences, type and amount of support from family and others, level of self-sufficiency, feeding habits, and ease of following the diet.
“Most of the differences between the child and adult recommendations have to do with compliance. Often, it’s more of a challenge for adults than for children,” said Dr. Cervenka.
The panel recommended providing adult patients with recipe ideas, individualized training on the ketogenic diet lifestyle from a dietitian or nutritionist, and guidance for meal planning and preparation before starting the diet. This will provide the greatest likelihood of success, as patients often report difficulties coping with carbohydrate restriction.
“In pediatric practice, positive responders typically remain on a ketogenic diet therapy for 2 years before considering weaning. Ketogenic diet therapy in adults is not time-limited. However, a minimum of 3 months of ketogenic diet therapy is recommended before any judgment of response is made,” the panel advised.
The panel pointed out the absolute metabolic contraindications and cautions related to feeding difficulties, gastrointestinal dysfunction, and digestion remain the same for both children and adults. However, they added that a range of common adult conditions such as hyperlipidemia, heart disease, diabetes, low bone density, and pregnancy “bring additional consideration, caution, and monitoring to ketogenic diet therapy use.”
Beyond epilepsy
The guidelines also call for pre–ketogenic diet therapy biochemical studies to screen adults for preexisting abnormalities and establish a reference for comparing follow-up results after 3, 6, and 12 months, and then annually or as needed.
They also noted that metabolic studies such as urine organic acid and serum amino acid levels are generally not needed in adults unless there is a strong clinical suspicion for an underlying metabolic disorder.
Updated genetic evaluation may also be considered in adults with intellectual disability and epilepsy of unknown etiology. Serial bone mineral density scans may be obtained every 5 years.
The guidelines also call for ketone monitoring (blood beta-hydroxybutyrate or urine amino acids) during the early months of ketogenic diet therapy as an objective indication of compliance and biochemical response.
Dietary adjustments should focus on optimizing the treatment response, minimizing side effects, and maximizing sustainability.
Adults on a ketogenic diet therapy should also be advised to take multivitamin and mineral supplements and drink plenty of fluids.
The panel said emerging evidence also supports the use of ketogenic diet therapies in other adult neurologic disorders such as migraine, Parkinson’s disease, dementia, and multiple sclerosis.
However, the panel said further evidence is needed to guide recommendations on use of ketogenic diet therapies in other neurologic conditions.
The research had no targeted funding. Dr. Cervenka has reported receiving grants from Nutricia, Vitaflo, BrightFocus Foundation, and Army Research Laboratory; honoraria from the American Epilepsy Society, the Neurology Center, Epigenix, LivaNova, and Nutricia; royalties from Demos; and consulting for Nutricia, Glut1 Deficiency Foundation, and Sage Therapeutics. Disclosures for the other authors are listed in the article.
A version of this article originally appeared on Medscape.com.
Just as in children with epilepsy, ketogenic diet therapies can be safe and effective in adults with epilepsy but should only be undertaken with the support of medical professionals trained in their use, the group said.
“Motivation is the key to successful ketogenic diet therapy adherence,” first author Mackenzie Cervenka, MD, director of the Adult Epilepsy Diet Center and associate professor of neurology at Johns Hopkins University, Baltimore, said in an interview.
“Patients who are autonomous require self-motivation and having a strong support structure is important as well. For those patients who are dependents, their caregivers need to be motivated to manage their diet,” said Dr. Cervenka.
The guidelines were published online Oct. 30 in Neurology Clinical Practice.
Novel in adult neurology
Ketogenic diet therapies are high-fat, low-carbohydrate, and adequate-protein diets that induce fat metabolism and ketone production. Despite its use as an effective antiseizure therapy since the 1920s, ketogenic diet therapies remain novel in adult neurology.
Furthermore, while there are established guidelines for ketogenic diet therapies to reduce seizures in children, there were no formal recommendations for adults, until now.
Drawing on the experience of experts at 20 centers using ketogenic diet therapies in more than 2,100 adults with epilepsy in 10 countries, Dr. Cervenka and an international team developed recommendations on use of ketogenic diet therapies in adults.
The panel noted, “with a relatively mild side effect profile and the potential to reduce seizures in nearly 60% of adults with drug-resistant epilepsy, ketogenic diet therapies should be part of the repertoire of available options.”
Ketogenic diet therapies are appropriate to offer to adults with seizure types and epilepsy syndromes for which these treatments are known to be effective in children, they said. These include tuberous sclerosis complex, Rett syndrome, Lennox-Gastaut syndrome, glucose transporter type 1 deficiency syndrome, genetic generalized epilepsies, and focal epilepsies caused by underlying migrational disorders and resistant to antiseizure medication.
However, adults with drug-resistant focal epilepsy should be offered surgical evaluation first, given the higher anticipated rate of seizure freedom via this route, the panel said.
A focus on compliance
Experts at nearly all of the centers report using two or more ketogenic diet therapies. Ninety percent use the modified Atkins diet, 84% use the classic ketogenic diet, and 63% use the modified ketogenic diet and/or low glycemic index treatment. More than half of the centers (58%) use medium-chain triglyceride oil in combination with another ketogenic diet therapy to boost ketone body production.
The most important factors influencing the choice of ketogenic diet therapy are ease of diet application for the patient (100%) and patient and/or caregiver preference, home setting, and mode of feeding (90% each).
The panel recommended that ketogenic diet therapies be tailored to fit the needs of the individual, taking into account his or her physical and mental characteristics, underlying medical conditions, food preferences, type and amount of support from family and others, level of self-sufficiency, feeding habits, and ease of following the diet.
“Most of the differences between the child and adult recommendations have to do with compliance. Often, it’s more of a challenge for adults than for children,” said Dr. Cervenka.
The panel recommended providing adult patients with recipe ideas, individualized training on the ketogenic diet lifestyle from a dietitian or nutritionist, and guidance for meal planning and preparation before starting the diet. This will provide the greatest likelihood of success, as patients often report difficulties coping with carbohydrate restriction.
“In pediatric practice, positive responders typically remain on a ketogenic diet therapy for 2 years before considering weaning. Ketogenic diet therapy in adults is not time-limited. However, a minimum of 3 months of ketogenic diet therapy is recommended before any judgment of response is made,” the panel advised.
The panel pointed out the absolute metabolic contraindications and cautions related to feeding difficulties, gastrointestinal dysfunction, and digestion remain the same for both children and adults. However, they added that a range of common adult conditions such as hyperlipidemia, heart disease, diabetes, low bone density, and pregnancy “bring additional consideration, caution, and monitoring to ketogenic diet therapy use.”
Beyond epilepsy
The guidelines also call for pre–ketogenic diet therapy biochemical studies to screen adults for preexisting abnormalities and establish a reference for comparing follow-up results after 3, 6, and 12 months, and then annually or as needed.
They also noted that metabolic studies such as urine organic acid and serum amino acid levels are generally not needed in adults unless there is a strong clinical suspicion for an underlying metabolic disorder.
Updated genetic evaluation may also be considered in adults with intellectual disability and epilepsy of unknown etiology. Serial bone mineral density scans may be obtained every 5 years.
The guidelines also call for ketone monitoring (blood beta-hydroxybutyrate or urine amino acids) during the early months of ketogenic diet therapy as an objective indication of compliance and biochemical response.
Dietary adjustments should focus on optimizing the treatment response, minimizing side effects, and maximizing sustainability.
Adults on a ketogenic diet therapy should also be advised to take multivitamin and mineral supplements and drink plenty of fluids.
The panel said emerging evidence also supports the use of ketogenic diet therapies in other adult neurologic disorders such as migraine, Parkinson’s disease, dementia, and multiple sclerosis.
However, the panel said further evidence is needed to guide recommendations on use of ketogenic diet therapies in other neurologic conditions.
The research had no targeted funding. Dr. Cervenka has reported receiving grants from Nutricia, Vitaflo, BrightFocus Foundation, and Army Research Laboratory; honoraria from the American Epilepsy Society, the Neurology Center, Epigenix, LivaNova, and Nutricia; royalties from Demos; and consulting for Nutricia, Glut1 Deficiency Foundation, and Sage Therapeutics. Disclosures for the other authors are listed in the article.
A version of this article originally appeared on Medscape.com.
Just as in children with epilepsy, ketogenic diet therapies can be safe and effective in adults with epilepsy but should only be undertaken with the support of medical professionals trained in their use, the group said.
“Motivation is the key to successful ketogenic diet therapy adherence,” first author Mackenzie Cervenka, MD, director of the Adult Epilepsy Diet Center and associate professor of neurology at Johns Hopkins University, Baltimore, said in an interview.
“Patients who are autonomous require self-motivation and having a strong support structure is important as well. For those patients who are dependents, their caregivers need to be motivated to manage their diet,” said Dr. Cervenka.
The guidelines were published online Oct. 30 in Neurology Clinical Practice.
Novel in adult neurology
Ketogenic diet therapies are high-fat, low-carbohydrate, and adequate-protein diets that induce fat metabolism and ketone production. Despite its use as an effective antiseizure therapy since the 1920s, ketogenic diet therapies remain novel in adult neurology.
Furthermore, while there are established guidelines for ketogenic diet therapies to reduce seizures in children, there were no formal recommendations for adults, until now.
Drawing on the experience of experts at 20 centers using ketogenic diet therapies in more than 2,100 adults with epilepsy in 10 countries, Dr. Cervenka and an international team developed recommendations on use of ketogenic diet therapies in adults.
The panel noted, “with a relatively mild side effect profile and the potential to reduce seizures in nearly 60% of adults with drug-resistant epilepsy, ketogenic diet therapies should be part of the repertoire of available options.”
Ketogenic diet therapies are appropriate to offer to adults with seizure types and epilepsy syndromes for which these treatments are known to be effective in children, they said. These include tuberous sclerosis complex, Rett syndrome, Lennox-Gastaut syndrome, glucose transporter type 1 deficiency syndrome, genetic generalized epilepsies, and focal epilepsies caused by underlying migrational disorders and resistant to antiseizure medication.
However, adults with drug-resistant focal epilepsy should be offered surgical evaluation first, given the higher anticipated rate of seizure freedom via this route, the panel said.
A focus on compliance
Experts at nearly all of the centers report using two or more ketogenic diet therapies. Ninety percent use the modified Atkins diet, 84% use the classic ketogenic diet, and 63% use the modified ketogenic diet and/or low glycemic index treatment. More than half of the centers (58%) use medium-chain triglyceride oil in combination with another ketogenic diet therapy to boost ketone body production.
The most important factors influencing the choice of ketogenic diet therapy are ease of diet application for the patient (100%) and patient and/or caregiver preference, home setting, and mode of feeding (90% each).
The panel recommended that ketogenic diet therapies be tailored to fit the needs of the individual, taking into account his or her physical and mental characteristics, underlying medical conditions, food preferences, type and amount of support from family and others, level of self-sufficiency, feeding habits, and ease of following the diet.
“Most of the differences between the child and adult recommendations have to do with compliance. Often, it’s more of a challenge for adults than for children,” said Dr. Cervenka.
The panel recommended providing adult patients with recipe ideas, individualized training on the ketogenic diet lifestyle from a dietitian or nutritionist, and guidance for meal planning and preparation before starting the diet. This will provide the greatest likelihood of success, as patients often report difficulties coping with carbohydrate restriction.
“In pediatric practice, positive responders typically remain on a ketogenic diet therapy for 2 years before considering weaning. Ketogenic diet therapy in adults is not time-limited. However, a minimum of 3 months of ketogenic diet therapy is recommended before any judgment of response is made,” the panel advised.
The panel pointed out the absolute metabolic contraindications and cautions related to feeding difficulties, gastrointestinal dysfunction, and digestion remain the same for both children and adults. However, they added that a range of common adult conditions such as hyperlipidemia, heart disease, diabetes, low bone density, and pregnancy “bring additional consideration, caution, and monitoring to ketogenic diet therapy use.”
Beyond epilepsy
The guidelines also call for pre–ketogenic diet therapy biochemical studies to screen adults for preexisting abnormalities and establish a reference for comparing follow-up results after 3, 6, and 12 months, and then annually or as needed.
They also noted that metabolic studies such as urine organic acid and serum amino acid levels are generally not needed in adults unless there is a strong clinical suspicion for an underlying metabolic disorder.
Updated genetic evaluation may also be considered in adults with intellectual disability and epilepsy of unknown etiology. Serial bone mineral density scans may be obtained every 5 years.
The guidelines also call for ketone monitoring (blood beta-hydroxybutyrate or urine amino acids) during the early months of ketogenic diet therapy as an objective indication of compliance and biochemical response.
Dietary adjustments should focus on optimizing the treatment response, minimizing side effects, and maximizing sustainability.
Adults on a ketogenic diet therapy should also be advised to take multivitamin and mineral supplements and drink plenty of fluids.
The panel said emerging evidence also supports the use of ketogenic diet therapies in other adult neurologic disorders such as migraine, Parkinson’s disease, dementia, and multiple sclerosis.
However, the panel said further evidence is needed to guide recommendations on use of ketogenic diet therapies in other neurologic conditions.
The research had no targeted funding. Dr. Cervenka has reported receiving grants from Nutricia, Vitaflo, BrightFocus Foundation, and Army Research Laboratory; honoraria from the American Epilepsy Society, the Neurology Center, Epigenix, LivaNova, and Nutricia; royalties from Demos; and consulting for Nutricia, Glut1 Deficiency Foundation, and Sage Therapeutics. Disclosures for the other authors are listed in the article.
A version of this article originally appeared on Medscape.com.
A closer look at migraine aura
Migraine aura sometimes accompanies or precedes migraine pain, but the phenomenon is difficult to treat and poorly understood. However, some evidence points to potential neurological mechanisms, and migraine aura is associated with cardiovascular disease risk.
Andrea Harriott, MD, PhD, said at the Stowe Headache Symposium sponsored by the Headache Cooperative of New England, which was conducted virtually. Dr. Harriott is assistant professor of neurology at Massachusetts General Hospital in Boston.
Somewhere between 20% and 40% of patients with migraine experience aura. It is most often visual, though it can also include sensory, aphasic, and motor symptoms. Visual aura usually begins as a flickering zigzag pattern in the central visual field that moves slowly toward the periphery and often leaves a scotoma. Typical duration is 15-30 minutes. Aura symptoms are more common in females.
Research in the 1940s conducted by the Brazilian researcher Aristides de Azevedo Pacheco Leão, PhD, then at Harvard Medical School, Boston, showed evidence of CSD in rabbits after electrical or mechanical stimulation. He observed a wave of vasodilation and increased blood flow over the cortex that spread over nearly the entire dorsolateral cortex within 3-6 minutes.
In the 1940s and 1950s, researchers sketched on paper the visual disturbance over 10 minutes, tracking the expanding spectrum across the visual field, from the center toward the periphery. The resulting scotoma advanced across the visual cortex at a rate very similar to that of the cortical spreading observed by Dr. Leão, “potentially linking this electrical event that was described with the aura event of migraine,” said Dr. Harriott. Those researchers hypothesized that the aura was produced by a strong excitation phase, followed by a wave of total inhibition.
More recent functional magnetic resonance imaging studies have also shown that CSD-like disturbances occur when patients experience migraine aura. In one study, researchers observed an initial increase and then a decrease in the blood oxygenation level dependent (BOLD) signal, which spread slowly across the visual cortex and correlated with the aura event. “This study was really important in confirming that a CSD-like phenomenon was likely the underlying perturbation that produced the visual aura of migraine,” said Dr. Harriott.
Despite the evidence that CSD causes migraine aura, its connection to migraine pain hasn’t been firmly established. But Dr. Harriott presented some evidence linking the two. Migraine aura is usually followed by pain, and aura precedes migraine attacks 78%-93% of the time. Cephalic allodynia occurs in migraine about 70% to 80% of the time, and migraine with aura is more often associated with severe cutaneous allodynia than is migraine without aura. Finally, migraine patients with comorbidities have more severe disability, and more frequent cutaneous allodynia and aura than does the general migraine population (40% vs. 29%).
All of that suggests that activation of trigeminal nociceptors is involved with migraine aura, according to Dr. Harriott. Preclinical studies have also suggested links between CSD and activation of trigeminal nociceptors, with both immunohistochemical and electrophysiological lines of evidence. “These data suggest that spreading depression actually activates trigeminal nociceptors that we know are involved in signal pain in the head and neck, and that we know are involved in cephalic allodynia as well,” Dr. Harriott said.
The evidence impressed Allan Purdy, MD, professor of medicine at Dalhousie University, Halifax, N.S., who was the discussant for the presentation. “It’s an excellent case that CSD is a remarkably good correlate for aura,” he said during the session.
Along with potential impacts on migraine pain, aura is also associated with cardiovascular risk. “This is really important to know about in our clinical population,” said Dr. Harriott.
Meta-analyses of case control and cohort studies have shown associations between migraine aura and vascular disorders such as ischemic stroke. One meta-analysis showed about a twofold increased risk associated with migraine compared with the nonmigraine population. This difference was driven by migraine with aura (relative risk [RR], 2.25; 95% confidence interval [CI], 1.53-3.33) rather than migraine without aura (RR, 1.24; 95% CI, 0.86-1.79). Migraine generally is associated with greater risk of myocardial infarction (adjusted hazard ratio, 1.33; 95% CI, 1.08-1.64), and that association may be stronger in the aura phenotype.
There doesn’t appear to be evidence that traditional risk factors for heart disease – such as hypertension, diabetes, or high cholesterol – play a role in the association between aura and heart disease. One possibility is that variables like platelet activation, hypercoagulable state, or genetic susceptibility could be responsible.
The risks associated with migraine aura should be noted, but with a caveat, according to Dr. Purdy. “Even though the relative risk is high, the absolute risk is still relatively low, and patients with migraine with aura, who smoke or are female and over 45, those are the cases where the worry comes in.”
Dr. Harriott and Dr. Purdy have nothing to disclose.
Migraine aura sometimes accompanies or precedes migraine pain, but the phenomenon is difficult to treat and poorly understood. However, some evidence points to potential neurological mechanisms, and migraine aura is associated with cardiovascular disease risk.
Andrea Harriott, MD, PhD, said at the Stowe Headache Symposium sponsored by the Headache Cooperative of New England, which was conducted virtually. Dr. Harriott is assistant professor of neurology at Massachusetts General Hospital in Boston.
Somewhere between 20% and 40% of patients with migraine experience aura. It is most often visual, though it can also include sensory, aphasic, and motor symptoms. Visual aura usually begins as a flickering zigzag pattern in the central visual field that moves slowly toward the periphery and often leaves a scotoma. Typical duration is 15-30 minutes. Aura symptoms are more common in females.
Research in the 1940s conducted by the Brazilian researcher Aristides de Azevedo Pacheco Leão, PhD, then at Harvard Medical School, Boston, showed evidence of CSD in rabbits after electrical or mechanical stimulation. He observed a wave of vasodilation and increased blood flow over the cortex that spread over nearly the entire dorsolateral cortex within 3-6 minutes.
In the 1940s and 1950s, researchers sketched on paper the visual disturbance over 10 minutes, tracking the expanding spectrum across the visual field, from the center toward the periphery. The resulting scotoma advanced across the visual cortex at a rate very similar to that of the cortical spreading observed by Dr. Leão, “potentially linking this electrical event that was described with the aura event of migraine,” said Dr. Harriott. Those researchers hypothesized that the aura was produced by a strong excitation phase, followed by a wave of total inhibition.
More recent functional magnetic resonance imaging studies have also shown that CSD-like disturbances occur when patients experience migraine aura. In one study, researchers observed an initial increase and then a decrease in the blood oxygenation level dependent (BOLD) signal, which spread slowly across the visual cortex and correlated with the aura event. “This study was really important in confirming that a CSD-like phenomenon was likely the underlying perturbation that produced the visual aura of migraine,” said Dr. Harriott.
Despite the evidence that CSD causes migraine aura, its connection to migraine pain hasn’t been firmly established. But Dr. Harriott presented some evidence linking the two. Migraine aura is usually followed by pain, and aura precedes migraine attacks 78%-93% of the time. Cephalic allodynia occurs in migraine about 70% to 80% of the time, and migraine with aura is more often associated with severe cutaneous allodynia than is migraine without aura. Finally, migraine patients with comorbidities have more severe disability, and more frequent cutaneous allodynia and aura than does the general migraine population (40% vs. 29%).
All of that suggests that activation of trigeminal nociceptors is involved with migraine aura, according to Dr. Harriott. Preclinical studies have also suggested links between CSD and activation of trigeminal nociceptors, with both immunohistochemical and electrophysiological lines of evidence. “These data suggest that spreading depression actually activates trigeminal nociceptors that we know are involved in signal pain in the head and neck, and that we know are involved in cephalic allodynia as well,” Dr. Harriott said.
The evidence impressed Allan Purdy, MD, professor of medicine at Dalhousie University, Halifax, N.S., who was the discussant for the presentation. “It’s an excellent case that CSD is a remarkably good correlate for aura,” he said during the session.
Along with potential impacts on migraine pain, aura is also associated with cardiovascular risk. “This is really important to know about in our clinical population,” said Dr. Harriott.
Meta-analyses of case control and cohort studies have shown associations between migraine aura and vascular disorders such as ischemic stroke. One meta-analysis showed about a twofold increased risk associated with migraine compared with the nonmigraine population. This difference was driven by migraine with aura (relative risk [RR], 2.25; 95% confidence interval [CI], 1.53-3.33) rather than migraine without aura (RR, 1.24; 95% CI, 0.86-1.79). Migraine generally is associated with greater risk of myocardial infarction (adjusted hazard ratio, 1.33; 95% CI, 1.08-1.64), and that association may be stronger in the aura phenotype.
There doesn’t appear to be evidence that traditional risk factors for heart disease – such as hypertension, diabetes, or high cholesterol – play a role in the association between aura and heart disease. One possibility is that variables like platelet activation, hypercoagulable state, or genetic susceptibility could be responsible.
The risks associated with migraine aura should be noted, but with a caveat, according to Dr. Purdy. “Even though the relative risk is high, the absolute risk is still relatively low, and patients with migraine with aura, who smoke or are female and over 45, those are the cases where the worry comes in.”
Dr. Harriott and Dr. Purdy have nothing to disclose.
Migraine aura sometimes accompanies or precedes migraine pain, but the phenomenon is difficult to treat and poorly understood. However, some evidence points to potential neurological mechanisms, and migraine aura is associated with cardiovascular disease risk.
Andrea Harriott, MD, PhD, said at the Stowe Headache Symposium sponsored by the Headache Cooperative of New England, which was conducted virtually. Dr. Harriott is assistant professor of neurology at Massachusetts General Hospital in Boston.
Somewhere between 20% and 40% of patients with migraine experience aura. It is most often visual, though it can also include sensory, aphasic, and motor symptoms. Visual aura usually begins as a flickering zigzag pattern in the central visual field that moves slowly toward the periphery and often leaves a scotoma. Typical duration is 15-30 minutes. Aura symptoms are more common in females.
Research in the 1940s conducted by the Brazilian researcher Aristides de Azevedo Pacheco Leão, PhD, then at Harvard Medical School, Boston, showed evidence of CSD in rabbits after electrical or mechanical stimulation. He observed a wave of vasodilation and increased blood flow over the cortex that spread over nearly the entire dorsolateral cortex within 3-6 minutes.
In the 1940s and 1950s, researchers sketched on paper the visual disturbance over 10 minutes, tracking the expanding spectrum across the visual field, from the center toward the periphery. The resulting scotoma advanced across the visual cortex at a rate very similar to that of the cortical spreading observed by Dr. Leão, “potentially linking this electrical event that was described with the aura event of migraine,” said Dr. Harriott. Those researchers hypothesized that the aura was produced by a strong excitation phase, followed by a wave of total inhibition.
More recent functional magnetic resonance imaging studies have also shown that CSD-like disturbances occur when patients experience migraine aura. In one study, researchers observed an initial increase and then a decrease in the blood oxygenation level dependent (BOLD) signal, which spread slowly across the visual cortex and correlated with the aura event. “This study was really important in confirming that a CSD-like phenomenon was likely the underlying perturbation that produced the visual aura of migraine,” said Dr. Harriott.
Despite the evidence that CSD causes migraine aura, its connection to migraine pain hasn’t been firmly established. But Dr. Harriott presented some evidence linking the two. Migraine aura is usually followed by pain, and aura precedes migraine attacks 78%-93% of the time. Cephalic allodynia occurs in migraine about 70% to 80% of the time, and migraine with aura is more often associated with severe cutaneous allodynia than is migraine without aura. Finally, migraine patients with comorbidities have more severe disability, and more frequent cutaneous allodynia and aura than does the general migraine population (40% vs. 29%).
All of that suggests that activation of trigeminal nociceptors is involved with migraine aura, according to Dr. Harriott. Preclinical studies have also suggested links between CSD and activation of trigeminal nociceptors, with both immunohistochemical and electrophysiological lines of evidence. “These data suggest that spreading depression actually activates trigeminal nociceptors that we know are involved in signal pain in the head and neck, and that we know are involved in cephalic allodynia as well,” Dr. Harriott said.
The evidence impressed Allan Purdy, MD, professor of medicine at Dalhousie University, Halifax, N.S., who was the discussant for the presentation. “It’s an excellent case that CSD is a remarkably good correlate for aura,” he said during the session.
Along with potential impacts on migraine pain, aura is also associated with cardiovascular risk. “This is really important to know about in our clinical population,” said Dr. Harriott.
Meta-analyses of case control and cohort studies have shown associations between migraine aura and vascular disorders such as ischemic stroke. One meta-analysis showed about a twofold increased risk associated with migraine compared with the nonmigraine population. This difference was driven by migraine with aura (relative risk [RR], 2.25; 95% confidence interval [CI], 1.53-3.33) rather than migraine without aura (RR, 1.24; 95% CI, 0.86-1.79). Migraine generally is associated with greater risk of myocardial infarction (adjusted hazard ratio, 1.33; 95% CI, 1.08-1.64), and that association may be stronger in the aura phenotype.
There doesn’t appear to be evidence that traditional risk factors for heart disease – such as hypertension, diabetes, or high cholesterol – play a role in the association between aura and heart disease. One possibility is that variables like platelet activation, hypercoagulable state, or genetic susceptibility could be responsible.
The risks associated with migraine aura should be noted, but with a caveat, according to Dr. Purdy. “Even though the relative risk is high, the absolute risk is still relatively low, and patients with migraine with aura, who smoke or are female and over 45, those are the cases where the worry comes in.”
Dr. Harriott and Dr. Purdy have nothing to disclose.
FROM HCNE STOWE 2020