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FDA gives fast-track approval to new ALS drug
the debilitating and deadly disease for which there is no cure.
Most people with ALS die within 3-5 years of when symptoms appear, usually of respiratory failure.
The newly approved drug, called Qalsody, is made by the Swiss company Biogen. The FDA fast-tracked the approval based on early trial results. The agency said in a news release that its decision was based on the demonstrated ability of the drug to reduce a protein in the blood that is a sign of degeneration of brain and nerve cells.
While the drug was shown to impact the chemical process in the body linked to degeneration, there was no significant change in people’s symptoms during the first 28 weeks that they took the drug, Biogen said in a news release. But the company noted that some patients did see improved functioning after starting treatment.
“I have observed the positive impact Qalsody has on slowing the progression of ALS in people with SOD1 mutations,” Timothy M. Miller, MD, PhD, researcher and codirector of the ALS Center at Washington University in St. Louis, said in a statement released by Biogen. “The FDA’s approval of Qalsody gives me hope that people living with this rare form of ALS could experience a reduction in decline in strength, clinical function, and respiratory function.”
Qalsody is given to people via a spinal injection, with an initial course of three injections every 2 weeks. People then get the injection once every 28 days.
The new treatment is approved only for people with a rare kind of ALS called SOD1-ALS, which is known for a genetic mutation. While ALS affects up to 32,000 people in the United States, just 2% of people with ALS have the SOD1 gene mutation. The FDA says the number of people in the United States who could use Qalsody is about 500.
In trials, 147 people received either Qalsody or a placebo, and the treatment significantly reduced the level of a protein in people’s blood that is associated with the loss of control of voluntary muscles.
Because Qalsody received a fast-track approval from the FDA, it must still provide more research data in the future, including from a trial examining how the drug affects people who carry the SOD1 gene but do not yet show symptoms of ALS.
A version of this article first appeared on Medscape.com.
the debilitating and deadly disease for which there is no cure.
Most people with ALS die within 3-5 years of when symptoms appear, usually of respiratory failure.
The newly approved drug, called Qalsody, is made by the Swiss company Biogen. The FDA fast-tracked the approval based on early trial results. The agency said in a news release that its decision was based on the demonstrated ability of the drug to reduce a protein in the blood that is a sign of degeneration of brain and nerve cells.
While the drug was shown to impact the chemical process in the body linked to degeneration, there was no significant change in people’s symptoms during the first 28 weeks that they took the drug, Biogen said in a news release. But the company noted that some patients did see improved functioning after starting treatment.
“I have observed the positive impact Qalsody has on slowing the progression of ALS in people with SOD1 mutations,” Timothy M. Miller, MD, PhD, researcher and codirector of the ALS Center at Washington University in St. Louis, said in a statement released by Biogen. “The FDA’s approval of Qalsody gives me hope that people living with this rare form of ALS could experience a reduction in decline in strength, clinical function, and respiratory function.”
Qalsody is given to people via a spinal injection, with an initial course of three injections every 2 weeks. People then get the injection once every 28 days.
The new treatment is approved only for people with a rare kind of ALS called SOD1-ALS, which is known for a genetic mutation. While ALS affects up to 32,000 people in the United States, just 2% of people with ALS have the SOD1 gene mutation. The FDA says the number of people in the United States who could use Qalsody is about 500.
In trials, 147 people received either Qalsody or a placebo, and the treatment significantly reduced the level of a protein in people’s blood that is associated with the loss of control of voluntary muscles.
Because Qalsody received a fast-track approval from the FDA, it must still provide more research data in the future, including from a trial examining how the drug affects people who carry the SOD1 gene but do not yet show symptoms of ALS.
A version of this article first appeared on Medscape.com.
the debilitating and deadly disease for which there is no cure.
Most people with ALS die within 3-5 years of when symptoms appear, usually of respiratory failure.
The newly approved drug, called Qalsody, is made by the Swiss company Biogen. The FDA fast-tracked the approval based on early trial results. The agency said in a news release that its decision was based on the demonstrated ability of the drug to reduce a protein in the blood that is a sign of degeneration of brain and nerve cells.
While the drug was shown to impact the chemical process in the body linked to degeneration, there was no significant change in people’s symptoms during the first 28 weeks that they took the drug, Biogen said in a news release. But the company noted that some patients did see improved functioning after starting treatment.
“I have observed the positive impact Qalsody has on slowing the progression of ALS in people with SOD1 mutations,” Timothy M. Miller, MD, PhD, researcher and codirector of the ALS Center at Washington University in St. Louis, said in a statement released by Biogen. “The FDA’s approval of Qalsody gives me hope that people living with this rare form of ALS could experience a reduction in decline in strength, clinical function, and respiratory function.”
Qalsody is given to people via a spinal injection, with an initial course of three injections every 2 weeks. People then get the injection once every 28 days.
The new treatment is approved only for people with a rare kind of ALS called SOD1-ALS, which is known for a genetic mutation. While ALS affects up to 32,000 people in the United States, just 2% of people with ALS have the SOD1 gene mutation. The FDA says the number of people in the United States who could use Qalsody is about 500.
In trials, 147 people received either Qalsody or a placebo, and the treatment significantly reduced the level of a protein in people’s blood that is associated with the loss of control of voluntary muscles.
Because Qalsody received a fast-track approval from the FDA, it must still provide more research data in the future, including from a trial examining how the drug affects people who carry the SOD1 gene but do not yet show symptoms of ALS.
A version of this article first appeared on Medscape.com.
Atogepant prevents episodic migraine in some difficult-to-treat cases
BOSTON – , according to findings from a study presented at the 2023 annual meeting of the American Academy of Neurology.
Initial results from the double-blind ELEVATE trial showed the oral atogepant group had significantly fewer mean monthly migraine days (MMD) compared with a placebo group. There was also a significant difference in the number of participants who achieved 50% or greater reduction in the number of mean MMDs and a significant reduction in acute medication use days compared with the placebo group, according to Patricia Pozo-Rosich, MD, PhD, a headache specialist in the neurology department and director of the headache and craniofacial pain clinical unit and the Migraine Adaptive Brain Center at the Vall d’Hebron University Hospital in Barcelona, and colleagues.
The oral calcitonin gene-related peptide (CGRP) receptor antagonist is currently approved in the United States by the Food and Drug Administration as a preventative for both episodic and chronic migraine.
Results from ELEVATE
Overall, ELEVATE’s initial efficacy analysis population consisted of 309 adults aged between 18 and 80 years from North America and Europe with episodic migraine who had 4-14 MMDs and had treatment failure with at least two classes of conventional oral medication. After a 28-day screening period, participants received either 60 mg of oral atogepant once per day (154 participants) or a placebo (155 participants). In the efficacy analysis population, 56.0% of participants had failed two oral migraine preventative medication classes, while 44.0% failed three or more classes of medication. Dr. Pozo-Rosich noted that participants were taking a number of different oral preventatives across different medication classes, including flunarizine, beta blockers, topiramate, and amitriptyline, but data are not yet available on which participants had received certain combinations of oral medications.
“[T]hese people have already taken some type of prevention, so they’re not naive patients,” she said. “They’re usually more or less well treated in the sense of having had a contact with specialists or a general neurologist, someone that actually tries to do some prevention.”
The researchers examined change from MMDs at baseline and at 12 weeks as a primary outcome, with 50% or greater MMD reduction, change in mean monthly headache days, and change in acute medication use days as secondary outcomes. Regarding the different acute medications used, Dr. Pozo-Rosich said the main three types were analgesics, nonsteroid anti-inflammatory drugs, and triptans, with participants excluded from the trial if they were taking opioids.
The results showed participants in the atogepant group had significantly fewer mean MMDs compared with the placebo group at 12 weeks compared with baseline (–4.20 vs. –1.85 days; P < .0001). Researchers also found statistically significant improvement in the atogepant group for 50% or greater reduction in MMD, change in mean monthly headache days, and change in acute medication use days across 12 weeks of treatment compared with the placebo group. While the specific data analyses for secondary outcomes were not conducted in the initial analysis, Dr. Pozo-Rosich said the numbers “correlate with the primary outcome” as seen in other migraine trials.
Compared with the placebo group, participants in the atogepant group had higher rates of constipation (10.3% vs. 2.5%), COVID-19 (9.6% vs. 8.3%), and nausea (7.1% vs. 3.2%), while the placebo group had a higher rate of nasopharyngitis (5.1% vs. 7.6%).*
Migraine is a prevalent and undertreated disease, and patients around the world with migraine are in need of treatment options that are both safe and effective, Dr. Pozo-Rosich said in an interview. “[E]ven in these hard-to-treat or difficult-to-treat migraine patients, you have a drug that works, and is safe, and well tolerated and effective,” she said.
That’s “kind of good news for all of us,” she said. Patients “need this type of good news and solution,” she explained, because they may not tolerate or have access to injectable medications. Atogepant would also give clinicians have another option to offer patients with difficult-to-treat migraine cases, she noted. “It makes life easier for many physicians and many patients for many different reasons,” she said.
Dr. Pozo-Rosich said the likely next step in the research is to conduct the main analysis as well as post hoc analyses with accumulated data from pathology trials “to understand patterns of response, understand the sustainability of the response, [and] adherence to the treatment in the long term.”
‘Exciting that it works well’ in difficult-to-treat patients
Commenting on the study, Alan M. Rapoport, MD, clinical professor of neurology at University of California, Los Angeles, and past president of the International Headache Society, agreed that better options in migraine treatment and prevention are needed.
“We needed something that was going to be better than what we had before,” he said.
Dr. Rapoport noted the study was well designed with strongly positive results. “It looks like it’s an effective drug, and it looks really good in that it’s effective for people that have failed all these preventives that have very little hope for the future,” he said.
He specifically praised the inclusion of older participants in the population. “You never see a study on 80-year-olds,” he said, “but I like that, because they felt it would be safe. There are 80-year-old patients – fewer of them than 40-year-old patients – but there are 80-year-old patients who still have migraine, so I’m really glad they put older patients in it,” he said.
For atogepant, he noted that “some patients won’t get the side effects, and some patients will tolerate the side effects because it’s working really well.” While the study was not a head-to-head comparison against other oral migraine preventatives, he pointed out the high rate of constipation among participants in the trial setting may be a warning sign of future issues, as seen with other CGRP receptor agonists.
“I can tell you that with erenumab, the monoclonal antibody that was injected in the double-blind studies, they didn’t find any significant increase in constipation,” he explained. However, some clinicians using erenumab in the real world have reported up to 20% of their patients are constipated. “It’s not good that they’re reporting 10% are constipated” in the study, he said.
Overall, “all you can really say is it does work well,” Dr. Rapoport said. “It’s exciting that it works well in such difficult-to-treat patients, and it does come with some side effects.”
Dr. Pozo-Rosich reports serving as a consultant and developing education materials for AbbVie, Eli Lilly, Novartis, Teva Pharmaceuticals, and Pfizer. Dr. Rapoport is the editor-in-chief of Neurology Reviews; he reports being a consultant for AbbVie, the developer of atogepant. The ELEVATE trial is supported by AbbVie.
*Correction, 5/4/23: An earlier version of this article misstated the percentage of COVID-positive patients in the study population.
BOSTON – , according to findings from a study presented at the 2023 annual meeting of the American Academy of Neurology.
Initial results from the double-blind ELEVATE trial showed the oral atogepant group had significantly fewer mean monthly migraine days (MMD) compared with a placebo group. There was also a significant difference in the number of participants who achieved 50% or greater reduction in the number of mean MMDs and a significant reduction in acute medication use days compared with the placebo group, according to Patricia Pozo-Rosich, MD, PhD, a headache specialist in the neurology department and director of the headache and craniofacial pain clinical unit and the Migraine Adaptive Brain Center at the Vall d’Hebron University Hospital in Barcelona, and colleagues.
The oral calcitonin gene-related peptide (CGRP) receptor antagonist is currently approved in the United States by the Food and Drug Administration as a preventative for both episodic and chronic migraine.
Results from ELEVATE
Overall, ELEVATE’s initial efficacy analysis population consisted of 309 adults aged between 18 and 80 years from North America and Europe with episodic migraine who had 4-14 MMDs and had treatment failure with at least two classes of conventional oral medication. After a 28-day screening period, participants received either 60 mg of oral atogepant once per day (154 participants) or a placebo (155 participants). In the efficacy analysis population, 56.0% of participants had failed two oral migraine preventative medication classes, while 44.0% failed three or more classes of medication. Dr. Pozo-Rosich noted that participants were taking a number of different oral preventatives across different medication classes, including flunarizine, beta blockers, topiramate, and amitriptyline, but data are not yet available on which participants had received certain combinations of oral medications.
“[T]hese people have already taken some type of prevention, so they’re not naive patients,” she said. “They’re usually more or less well treated in the sense of having had a contact with specialists or a general neurologist, someone that actually tries to do some prevention.”
The researchers examined change from MMDs at baseline and at 12 weeks as a primary outcome, with 50% or greater MMD reduction, change in mean monthly headache days, and change in acute medication use days as secondary outcomes. Regarding the different acute medications used, Dr. Pozo-Rosich said the main three types were analgesics, nonsteroid anti-inflammatory drugs, and triptans, with participants excluded from the trial if they were taking opioids.
The results showed participants in the atogepant group had significantly fewer mean MMDs compared with the placebo group at 12 weeks compared with baseline (–4.20 vs. –1.85 days; P < .0001). Researchers also found statistically significant improvement in the atogepant group for 50% or greater reduction in MMD, change in mean monthly headache days, and change in acute medication use days across 12 weeks of treatment compared with the placebo group. While the specific data analyses for secondary outcomes were not conducted in the initial analysis, Dr. Pozo-Rosich said the numbers “correlate with the primary outcome” as seen in other migraine trials.
Compared with the placebo group, participants in the atogepant group had higher rates of constipation (10.3% vs. 2.5%), COVID-19 (9.6% vs. 8.3%), and nausea (7.1% vs. 3.2%), while the placebo group had a higher rate of nasopharyngitis (5.1% vs. 7.6%).*
Migraine is a prevalent and undertreated disease, and patients around the world with migraine are in need of treatment options that are both safe and effective, Dr. Pozo-Rosich said in an interview. “[E]ven in these hard-to-treat or difficult-to-treat migraine patients, you have a drug that works, and is safe, and well tolerated and effective,” she said.
That’s “kind of good news for all of us,” she said. Patients “need this type of good news and solution,” she explained, because they may not tolerate or have access to injectable medications. Atogepant would also give clinicians have another option to offer patients with difficult-to-treat migraine cases, she noted. “It makes life easier for many physicians and many patients for many different reasons,” she said.
Dr. Pozo-Rosich said the likely next step in the research is to conduct the main analysis as well as post hoc analyses with accumulated data from pathology trials “to understand patterns of response, understand the sustainability of the response, [and] adherence to the treatment in the long term.”
‘Exciting that it works well’ in difficult-to-treat patients
Commenting on the study, Alan M. Rapoport, MD, clinical professor of neurology at University of California, Los Angeles, and past president of the International Headache Society, agreed that better options in migraine treatment and prevention are needed.
“We needed something that was going to be better than what we had before,” he said.
Dr. Rapoport noted the study was well designed with strongly positive results. “It looks like it’s an effective drug, and it looks really good in that it’s effective for people that have failed all these preventives that have very little hope for the future,” he said.
He specifically praised the inclusion of older participants in the population. “You never see a study on 80-year-olds,” he said, “but I like that, because they felt it would be safe. There are 80-year-old patients – fewer of them than 40-year-old patients – but there are 80-year-old patients who still have migraine, so I’m really glad they put older patients in it,” he said.
For atogepant, he noted that “some patients won’t get the side effects, and some patients will tolerate the side effects because it’s working really well.” While the study was not a head-to-head comparison against other oral migraine preventatives, he pointed out the high rate of constipation among participants in the trial setting may be a warning sign of future issues, as seen with other CGRP receptor agonists.
“I can tell you that with erenumab, the monoclonal antibody that was injected in the double-blind studies, they didn’t find any significant increase in constipation,” he explained. However, some clinicians using erenumab in the real world have reported up to 20% of their patients are constipated. “It’s not good that they’re reporting 10% are constipated” in the study, he said.
Overall, “all you can really say is it does work well,” Dr. Rapoport said. “It’s exciting that it works well in such difficult-to-treat patients, and it does come with some side effects.”
Dr. Pozo-Rosich reports serving as a consultant and developing education materials for AbbVie, Eli Lilly, Novartis, Teva Pharmaceuticals, and Pfizer. Dr. Rapoport is the editor-in-chief of Neurology Reviews; he reports being a consultant for AbbVie, the developer of atogepant. The ELEVATE trial is supported by AbbVie.
*Correction, 5/4/23: An earlier version of this article misstated the percentage of COVID-positive patients in the study population.
BOSTON – , according to findings from a study presented at the 2023 annual meeting of the American Academy of Neurology.
Initial results from the double-blind ELEVATE trial showed the oral atogepant group had significantly fewer mean monthly migraine days (MMD) compared with a placebo group. There was also a significant difference in the number of participants who achieved 50% or greater reduction in the number of mean MMDs and a significant reduction in acute medication use days compared with the placebo group, according to Patricia Pozo-Rosich, MD, PhD, a headache specialist in the neurology department and director of the headache and craniofacial pain clinical unit and the Migraine Adaptive Brain Center at the Vall d’Hebron University Hospital in Barcelona, and colleagues.
The oral calcitonin gene-related peptide (CGRP) receptor antagonist is currently approved in the United States by the Food and Drug Administration as a preventative for both episodic and chronic migraine.
Results from ELEVATE
Overall, ELEVATE’s initial efficacy analysis population consisted of 309 adults aged between 18 and 80 years from North America and Europe with episodic migraine who had 4-14 MMDs and had treatment failure with at least two classes of conventional oral medication. After a 28-day screening period, participants received either 60 mg of oral atogepant once per day (154 participants) or a placebo (155 participants). In the efficacy analysis population, 56.0% of participants had failed two oral migraine preventative medication classes, while 44.0% failed three or more classes of medication. Dr. Pozo-Rosich noted that participants were taking a number of different oral preventatives across different medication classes, including flunarizine, beta blockers, topiramate, and amitriptyline, but data are not yet available on which participants had received certain combinations of oral medications.
“[T]hese people have already taken some type of prevention, so they’re not naive patients,” she said. “They’re usually more or less well treated in the sense of having had a contact with specialists or a general neurologist, someone that actually tries to do some prevention.”
The researchers examined change from MMDs at baseline and at 12 weeks as a primary outcome, with 50% or greater MMD reduction, change in mean monthly headache days, and change in acute medication use days as secondary outcomes. Regarding the different acute medications used, Dr. Pozo-Rosich said the main three types were analgesics, nonsteroid anti-inflammatory drugs, and triptans, with participants excluded from the trial if they were taking opioids.
The results showed participants in the atogepant group had significantly fewer mean MMDs compared with the placebo group at 12 weeks compared with baseline (–4.20 vs. –1.85 days; P < .0001). Researchers also found statistically significant improvement in the atogepant group for 50% or greater reduction in MMD, change in mean monthly headache days, and change in acute medication use days across 12 weeks of treatment compared with the placebo group. While the specific data analyses for secondary outcomes were not conducted in the initial analysis, Dr. Pozo-Rosich said the numbers “correlate with the primary outcome” as seen in other migraine trials.
Compared with the placebo group, participants in the atogepant group had higher rates of constipation (10.3% vs. 2.5%), COVID-19 (9.6% vs. 8.3%), and nausea (7.1% vs. 3.2%), while the placebo group had a higher rate of nasopharyngitis (5.1% vs. 7.6%).*
Migraine is a prevalent and undertreated disease, and patients around the world with migraine are in need of treatment options that are both safe and effective, Dr. Pozo-Rosich said in an interview. “[E]ven in these hard-to-treat or difficult-to-treat migraine patients, you have a drug that works, and is safe, and well tolerated and effective,” she said.
That’s “kind of good news for all of us,” she said. Patients “need this type of good news and solution,” she explained, because they may not tolerate or have access to injectable medications. Atogepant would also give clinicians have another option to offer patients with difficult-to-treat migraine cases, she noted. “It makes life easier for many physicians and many patients for many different reasons,” she said.
Dr. Pozo-Rosich said the likely next step in the research is to conduct the main analysis as well as post hoc analyses with accumulated data from pathology trials “to understand patterns of response, understand the sustainability of the response, [and] adherence to the treatment in the long term.”
‘Exciting that it works well’ in difficult-to-treat patients
Commenting on the study, Alan M. Rapoport, MD, clinical professor of neurology at University of California, Los Angeles, and past president of the International Headache Society, agreed that better options in migraine treatment and prevention are needed.
“We needed something that was going to be better than what we had before,” he said.
Dr. Rapoport noted the study was well designed with strongly positive results. “It looks like it’s an effective drug, and it looks really good in that it’s effective for people that have failed all these preventives that have very little hope for the future,” he said.
He specifically praised the inclusion of older participants in the population. “You never see a study on 80-year-olds,” he said, “but I like that, because they felt it would be safe. There are 80-year-old patients – fewer of them than 40-year-old patients – but there are 80-year-old patients who still have migraine, so I’m really glad they put older patients in it,” he said.
For atogepant, he noted that “some patients won’t get the side effects, and some patients will tolerate the side effects because it’s working really well.” While the study was not a head-to-head comparison against other oral migraine preventatives, he pointed out the high rate of constipation among participants in the trial setting may be a warning sign of future issues, as seen with other CGRP receptor agonists.
“I can tell you that with erenumab, the monoclonal antibody that was injected in the double-blind studies, they didn’t find any significant increase in constipation,” he explained. However, some clinicians using erenumab in the real world have reported up to 20% of their patients are constipated. “It’s not good that they’re reporting 10% are constipated” in the study, he said.
Overall, “all you can really say is it does work well,” Dr. Rapoport said. “It’s exciting that it works well in such difficult-to-treat patients, and it does come with some side effects.”
Dr. Pozo-Rosich reports serving as a consultant and developing education materials for AbbVie, Eli Lilly, Novartis, Teva Pharmaceuticals, and Pfizer. Dr. Rapoport is the editor-in-chief of Neurology Reviews; he reports being a consultant for AbbVie, the developer of atogepant. The ELEVATE trial is supported by AbbVie.
*Correction, 5/4/23: An earlier version of this article misstated the percentage of COVID-positive patients in the study population.
FROM AAN 2023
Walnuts linked to improved attention, psychological maturity in teens
, new research shows. Adolescents who consumed walnuts for at least 100 days showed improved sustained attention and fluid intelligence as well as a reduction in symptoms of attension deficit hyperactivity disorder, compared with matched controls who did not consume the nuts. However, there were no statistically significant changes between the groups in other parameters, such as working memory and executive function.
Clinicians should advise adolescents “to eat a handful of walnuts three times a week for the rest of their lives. They may have a healthier brain with better cognitive function,” said senior investigator Jordi Julvez, PhD, group leader at the Institute of Health Research Pere Virgili, Barcelona, and associated researcher at the Barcelona Institute for Global Health.
The study was published online in eClinicalMedicine.
Rich source of omega-3s
Adolescence is “a period of refinement of brain connectivity and complex behaviors,” the investigators noted.
Previous research suggests polyunsaturated fatty acids are key in central nervous system architecture and function during times of neural development, with three specific PUFAs playing an “essential developmental role.”
Two omega-3 fatty acids – docosahexaenoic acid and eicosapentaenoic acid – are PUFAs that must be obtained through diet, mainly from seafood. Walnuts are “among the richest sources” of plant-derived omega-3 fatty acids, particularly alpha-linolenic acid (ALA), a precursor for longer-chain EPA and DHA.
ALA independently “has positive effects on brain function and plasticity,” the authors wrote. In addition, walnut constituents – particularly polyphenols and other bioactive compounds – “may act synergistically with ALA to foster brain health.”
Earlier small studies have found positive associations between walnut consumption and cognitive function in children, adolescents, and young adults, but to date, no randomized controlled trial has focused on the effect of walnut consumption on adolescent neuropsychological function.
The researchers studied 771 healthy adolescents (aged 11-16 years, mean age 14) drawn from 12 Spanish high schools. Participants were instructed to follow healthy eating recommendations and were randomly assigned 1:1 to the intervention (n = 386) or the control group (n = 385).
At baseline and after 6 months, they completed neuropsychological tests and behavioral rating scales. The Attention Network Test assessed attention, and the N-back test was used to assess working memory. The Tests of Primary Mental Abilities assessed fluid intelligence. Risky decision-making was tested using the Roulettes Task.
Fruit and nuts
Participants also completed the Strengths and Difficulties Questionnaire, which provided a total score of problem behavior. Teachers filled out the ADHD DSM-IV form list to provide additional information about ADHD behaviors.
The intervention group received 30 grams/day of raw California walnut kernels to incorporate into their daily diet. It is estimated that this walnut contains about 9 g of ALA per 100 g.
All participants received a seasonal fruit calendar and were asked to eat at least one piece of seasonal fruit daily.
Parents reported their child’s daily walnut consumption, with adherence defined as 100 or more days of eating walnuts during the 6-month period.
All main analyses were based on an intention-to-treat method (participants were analyzed according to their original group assignment, regardless of their adherence to the intervention).
The researchers also conducted a secondary per-protocol analysis, comparing the intervention and control groups to estimate the effect if all participants had adhered to their assigned intervention. They censored data for participants who reported eating walnuts for less than 100 days during the 6-month trial period.
Secondary outcomes included changes in height, weight, waist circumference, and BMI, as well as red blood cell proportions of omega-3 fatty acids (DHA, EPA, and ALA) at baseline and after 6 months.
Adherence counts
Most participants had “medium” or “high” levels of adherence to the Mediterranean diet, with “no meaningful differences” at baseline between the intervention and control groups in lifestyle characteristics or mean scores in all primary endpoints.
In the ITT analysis, there were no statistically significant differences in primary outcomes between the groups following the intervention. As for secondary outcomes, the RBC ALA significantly increased in the walnuts group but not the control group (coefficient, 0.04%; 95% confidence interval, 0.03%-0.06%; P < .0001).
However, there were differences in primary outcomes between the groups in the per-protocol analysis: The adherence-adjusted effect on improvement in attention score was −11.26 ms; 95% CI, −19.92 to −2.60; P = .011) for the intervention versus the control group.
The per-protocol analysis showed other differences: an improvement in fluid intelligence score (1.78; 95% CI, 0.90 - 2.67; P < .0001) and a reduction in ADHD symptom score (−2.18; 95% CI, −3.70 to −0.67; P = .0050).
“Overall, no significant differences were found in the intervention group in relation to the control group,” Dr. Julvez said in a news release. “But if the adherence factor is considered, then positive results are observed, since participants who most closely followed the guidelines – in terms of the recommended dose of walnuts and the number of days of consumption – did show improvements in the neuropsychological functions evaluated.”
Adolescence “is a time of great biological changes. Hormonal transformation occurs, which in turn is responsible for stimulating the synaptic growth of the frontal lobe,” he continued, adding that this brain region “enables neuropsychological maturation of more complex emotional and cognitive functions.”
“Neurons that are well nourished with these types of fatty acids will be able to grow and form new, stronger synapses,” he said.
Food as medicine
Uma Naidoo, MD, director of nutritional and lifestyle psychiatry at Massachusetts General Hospital, Boston, “commends” the researchers for conducting an RCT with a “robust” sample size and said she is “excited to see research like this furthering functional nutrition for mental health,” as she believes that “food is medicine.”
Dr. Naidoo, a professional chef, nutritional biologist, and author of the book “This Is Your Brain on Food,” said the findings “align” with her own approach to nutritional psychiatry and are also “in line” with her clinical practice.
However, although these results are “promising,” more research is needed across more diverse populations to “make sure these results are truly generalizable,” said Dr. Naidoo, a faculty member at Harvard Medical School, Boston, who was not involved with the study.
She “envisions a future where the research is so advanced that we can ‘dose’ these healthy whole foods for specific psychiatric symptoms and conditions.”
This study was supported by Instituto de Salud Carlos III (co-funded by European Union Regional Development Fund “A way to make Europe”). The California Walnut Commission has given support by supplying the walnuts for free for the Walnuts Smart Snack Dietary Intervention Trial. Dr. Julvez holds a Miguel Servet-II contract awarded by the Instituto de Salud Carlos III (co-funded by European Union Social Fund). The other authors’ disclosures are listed in the original article. Dr. Naidoo reports no relevant financial relationships.
A version of this article first appeared on Medscape.com.
, new research shows. Adolescents who consumed walnuts for at least 100 days showed improved sustained attention and fluid intelligence as well as a reduction in symptoms of attension deficit hyperactivity disorder, compared with matched controls who did not consume the nuts. However, there were no statistically significant changes between the groups in other parameters, such as working memory and executive function.
Clinicians should advise adolescents “to eat a handful of walnuts three times a week for the rest of their lives. They may have a healthier brain with better cognitive function,” said senior investigator Jordi Julvez, PhD, group leader at the Institute of Health Research Pere Virgili, Barcelona, and associated researcher at the Barcelona Institute for Global Health.
The study was published online in eClinicalMedicine.
Rich source of omega-3s
Adolescence is “a period of refinement of brain connectivity and complex behaviors,” the investigators noted.
Previous research suggests polyunsaturated fatty acids are key in central nervous system architecture and function during times of neural development, with three specific PUFAs playing an “essential developmental role.”
Two omega-3 fatty acids – docosahexaenoic acid and eicosapentaenoic acid – are PUFAs that must be obtained through diet, mainly from seafood. Walnuts are “among the richest sources” of plant-derived omega-3 fatty acids, particularly alpha-linolenic acid (ALA), a precursor for longer-chain EPA and DHA.
ALA independently “has positive effects on brain function and plasticity,” the authors wrote. In addition, walnut constituents – particularly polyphenols and other bioactive compounds – “may act synergistically with ALA to foster brain health.”
Earlier small studies have found positive associations between walnut consumption and cognitive function in children, adolescents, and young adults, but to date, no randomized controlled trial has focused on the effect of walnut consumption on adolescent neuropsychological function.
The researchers studied 771 healthy adolescents (aged 11-16 years, mean age 14) drawn from 12 Spanish high schools. Participants were instructed to follow healthy eating recommendations and were randomly assigned 1:1 to the intervention (n = 386) or the control group (n = 385).
At baseline and after 6 months, they completed neuropsychological tests and behavioral rating scales. The Attention Network Test assessed attention, and the N-back test was used to assess working memory. The Tests of Primary Mental Abilities assessed fluid intelligence. Risky decision-making was tested using the Roulettes Task.
Fruit and nuts
Participants also completed the Strengths and Difficulties Questionnaire, which provided a total score of problem behavior. Teachers filled out the ADHD DSM-IV form list to provide additional information about ADHD behaviors.
The intervention group received 30 grams/day of raw California walnut kernels to incorporate into their daily diet. It is estimated that this walnut contains about 9 g of ALA per 100 g.
All participants received a seasonal fruit calendar and were asked to eat at least one piece of seasonal fruit daily.
Parents reported their child’s daily walnut consumption, with adherence defined as 100 or more days of eating walnuts during the 6-month period.
All main analyses were based on an intention-to-treat method (participants were analyzed according to their original group assignment, regardless of their adherence to the intervention).
The researchers also conducted a secondary per-protocol analysis, comparing the intervention and control groups to estimate the effect if all participants had adhered to their assigned intervention. They censored data for participants who reported eating walnuts for less than 100 days during the 6-month trial period.
Secondary outcomes included changes in height, weight, waist circumference, and BMI, as well as red blood cell proportions of omega-3 fatty acids (DHA, EPA, and ALA) at baseline and after 6 months.
Adherence counts
Most participants had “medium” or “high” levels of adherence to the Mediterranean diet, with “no meaningful differences” at baseline between the intervention and control groups in lifestyle characteristics or mean scores in all primary endpoints.
In the ITT analysis, there were no statistically significant differences in primary outcomes between the groups following the intervention. As for secondary outcomes, the RBC ALA significantly increased in the walnuts group but not the control group (coefficient, 0.04%; 95% confidence interval, 0.03%-0.06%; P < .0001).
However, there were differences in primary outcomes between the groups in the per-protocol analysis: The adherence-adjusted effect on improvement in attention score was −11.26 ms; 95% CI, −19.92 to −2.60; P = .011) for the intervention versus the control group.
The per-protocol analysis showed other differences: an improvement in fluid intelligence score (1.78; 95% CI, 0.90 - 2.67; P < .0001) and a reduction in ADHD symptom score (−2.18; 95% CI, −3.70 to −0.67; P = .0050).
“Overall, no significant differences were found in the intervention group in relation to the control group,” Dr. Julvez said in a news release. “But if the adherence factor is considered, then positive results are observed, since participants who most closely followed the guidelines – in terms of the recommended dose of walnuts and the number of days of consumption – did show improvements in the neuropsychological functions evaluated.”
Adolescence “is a time of great biological changes. Hormonal transformation occurs, which in turn is responsible for stimulating the synaptic growth of the frontal lobe,” he continued, adding that this brain region “enables neuropsychological maturation of more complex emotional and cognitive functions.”
“Neurons that are well nourished with these types of fatty acids will be able to grow and form new, stronger synapses,” he said.
Food as medicine
Uma Naidoo, MD, director of nutritional and lifestyle psychiatry at Massachusetts General Hospital, Boston, “commends” the researchers for conducting an RCT with a “robust” sample size and said she is “excited to see research like this furthering functional nutrition for mental health,” as she believes that “food is medicine.”
Dr. Naidoo, a professional chef, nutritional biologist, and author of the book “This Is Your Brain on Food,” said the findings “align” with her own approach to nutritional psychiatry and are also “in line” with her clinical practice.
However, although these results are “promising,” more research is needed across more diverse populations to “make sure these results are truly generalizable,” said Dr. Naidoo, a faculty member at Harvard Medical School, Boston, who was not involved with the study.
She “envisions a future where the research is so advanced that we can ‘dose’ these healthy whole foods for specific psychiatric symptoms and conditions.”
This study was supported by Instituto de Salud Carlos III (co-funded by European Union Regional Development Fund “A way to make Europe”). The California Walnut Commission has given support by supplying the walnuts for free for the Walnuts Smart Snack Dietary Intervention Trial. Dr. Julvez holds a Miguel Servet-II contract awarded by the Instituto de Salud Carlos III (co-funded by European Union Social Fund). The other authors’ disclosures are listed in the original article. Dr. Naidoo reports no relevant financial relationships.
A version of this article first appeared on Medscape.com.
, new research shows. Adolescents who consumed walnuts for at least 100 days showed improved sustained attention and fluid intelligence as well as a reduction in symptoms of attension deficit hyperactivity disorder, compared with matched controls who did not consume the nuts. However, there were no statistically significant changes between the groups in other parameters, such as working memory and executive function.
Clinicians should advise adolescents “to eat a handful of walnuts three times a week for the rest of their lives. They may have a healthier brain with better cognitive function,” said senior investigator Jordi Julvez, PhD, group leader at the Institute of Health Research Pere Virgili, Barcelona, and associated researcher at the Barcelona Institute for Global Health.
The study was published online in eClinicalMedicine.
Rich source of omega-3s
Adolescence is “a period of refinement of brain connectivity and complex behaviors,” the investigators noted.
Previous research suggests polyunsaturated fatty acids are key in central nervous system architecture and function during times of neural development, with three specific PUFAs playing an “essential developmental role.”
Two omega-3 fatty acids – docosahexaenoic acid and eicosapentaenoic acid – are PUFAs that must be obtained through diet, mainly from seafood. Walnuts are “among the richest sources” of plant-derived omega-3 fatty acids, particularly alpha-linolenic acid (ALA), a precursor for longer-chain EPA and DHA.
ALA independently “has positive effects on brain function and plasticity,” the authors wrote. In addition, walnut constituents – particularly polyphenols and other bioactive compounds – “may act synergistically with ALA to foster brain health.”
Earlier small studies have found positive associations between walnut consumption and cognitive function in children, adolescents, and young adults, but to date, no randomized controlled trial has focused on the effect of walnut consumption on adolescent neuropsychological function.
The researchers studied 771 healthy adolescents (aged 11-16 years, mean age 14) drawn from 12 Spanish high schools. Participants were instructed to follow healthy eating recommendations and were randomly assigned 1:1 to the intervention (n = 386) or the control group (n = 385).
At baseline and after 6 months, they completed neuropsychological tests and behavioral rating scales. The Attention Network Test assessed attention, and the N-back test was used to assess working memory. The Tests of Primary Mental Abilities assessed fluid intelligence. Risky decision-making was tested using the Roulettes Task.
Fruit and nuts
Participants also completed the Strengths and Difficulties Questionnaire, which provided a total score of problem behavior. Teachers filled out the ADHD DSM-IV form list to provide additional information about ADHD behaviors.
The intervention group received 30 grams/day of raw California walnut kernels to incorporate into their daily diet. It is estimated that this walnut contains about 9 g of ALA per 100 g.
All participants received a seasonal fruit calendar and were asked to eat at least one piece of seasonal fruit daily.
Parents reported their child’s daily walnut consumption, with adherence defined as 100 or more days of eating walnuts during the 6-month period.
All main analyses were based on an intention-to-treat method (participants were analyzed according to their original group assignment, regardless of their adherence to the intervention).
The researchers also conducted a secondary per-protocol analysis, comparing the intervention and control groups to estimate the effect if all participants had adhered to their assigned intervention. They censored data for participants who reported eating walnuts for less than 100 days during the 6-month trial period.
Secondary outcomes included changes in height, weight, waist circumference, and BMI, as well as red blood cell proportions of omega-3 fatty acids (DHA, EPA, and ALA) at baseline and after 6 months.
Adherence counts
Most participants had “medium” or “high” levels of adherence to the Mediterranean diet, with “no meaningful differences” at baseline between the intervention and control groups in lifestyle characteristics or mean scores in all primary endpoints.
In the ITT analysis, there were no statistically significant differences in primary outcomes between the groups following the intervention. As for secondary outcomes, the RBC ALA significantly increased in the walnuts group but not the control group (coefficient, 0.04%; 95% confidence interval, 0.03%-0.06%; P < .0001).
However, there were differences in primary outcomes between the groups in the per-protocol analysis: The adherence-adjusted effect on improvement in attention score was −11.26 ms; 95% CI, −19.92 to −2.60; P = .011) for the intervention versus the control group.
The per-protocol analysis showed other differences: an improvement in fluid intelligence score (1.78; 95% CI, 0.90 - 2.67; P < .0001) and a reduction in ADHD symptom score (−2.18; 95% CI, −3.70 to −0.67; P = .0050).
“Overall, no significant differences were found in the intervention group in relation to the control group,” Dr. Julvez said in a news release. “But if the adherence factor is considered, then positive results are observed, since participants who most closely followed the guidelines – in terms of the recommended dose of walnuts and the number of days of consumption – did show improvements in the neuropsychological functions evaluated.”
Adolescence “is a time of great biological changes. Hormonal transformation occurs, which in turn is responsible for stimulating the synaptic growth of the frontal lobe,” he continued, adding that this brain region “enables neuropsychological maturation of more complex emotional and cognitive functions.”
“Neurons that are well nourished with these types of fatty acids will be able to grow and form new, stronger synapses,” he said.
Food as medicine
Uma Naidoo, MD, director of nutritional and lifestyle psychiatry at Massachusetts General Hospital, Boston, “commends” the researchers for conducting an RCT with a “robust” sample size and said she is “excited to see research like this furthering functional nutrition for mental health,” as she believes that “food is medicine.”
Dr. Naidoo, a professional chef, nutritional biologist, and author of the book “This Is Your Brain on Food,” said the findings “align” with her own approach to nutritional psychiatry and are also “in line” with her clinical practice.
However, although these results are “promising,” more research is needed across more diverse populations to “make sure these results are truly generalizable,” said Dr. Naidoo, a faculty member at Harvard Medical School, Boston, who was not involved with the study.
She “envisions a future where the research is so advanced that we can ‘dose’ these healthy whole foods for specific psychiatric symptoms and conditions.”
This study was supported by Instituto de Salud Carlos III (co-funded by European Union Regional Development Fund “A way to make Europe”). The California Walnut Commission has given support by supplying the walnuts for free for the Walnuts Smart Snack Dietary Intervention Trial. Dr. Julvez holds a Miguel Servet-II contract awarded by the Instituto de Salud Carlos III (co-funded by European Union Social Fund). The other authors’ disclosures are listed in the original article. Dr. Naidoo reports no relevant financial relationships.
A version of this article first appeared on Medscape.com.
FROM ECLINICALMEDICINE
Predicting BPD vs. bipolar treatment response: New imaging data
A new study identifies specific brain regions involved in treatment response in bipolar disorder (BD) and borderline personality disorder (BPD), potentially paving the way for more targeted treatment.
In a meta-analysis of 34 studies that used neuroimaging to investigate changes in brain activation following psychotherapy and pharmacotherapy for BD and BPD, investigators found most brain regions showing abnormal activation in both conditions improved after treatment. In particular, changes in brain activity after psychotherapy were found primarily in the frontal areas, whereas pharmacotherapy largely altered the limbic areas.
“,” senior investigator Xiaoming Li, PhD, professor, department of medical psychology, Anhui Medical University, Hefei, China, told this news organization.
“It may also contribute to the identification of more accurate neuroimaging biomarkers for treatment of the two disorders and to the finding of more effective therapy,” Dr. Li said.
The study was published online in the Journal of Clinical Psychiatry.
Blurred boundary
Dr. Li called BDs and BPDs “difficult to diagnose and differentiate,” noting that the comorbidity rate is “very high.” Underestimating the boundary between BD and BPD “increases the risk of improper or harmful drug exposure,” since mood stabilizing drugs are “considered to be the key therapeutic intervention for BD, while psychotherapy is the key treatment for BPD.”
The “blurred boundary between BD and BPD is one of the reasons it is important to study the relationship between these two diseases,” the authors said.
Previous studies comparing the relationship between BD and BPD “did not explore the similarities and differences in brain mechanisms between these two disorders after treatment,” they pointed out.
Patients with BD have a different disease course and response to therapy, compared to patient with BPD patients. “Misdiagnosis may result in the patients receiving ineffective treatment, so it is particularly important to explore the neural mechanisms of the treatment of these two diseases,” Dr. Li said.
To investigate, the researchers used activation likelihood estimation (ALE) – a technique that examines coordinates of neuroimaging data gleaned from published studies – after searching several databases from inception until June 2021.
This approach was used to “evaluate the similarities and differences in the activation of different brain regions in patients with BD and BPD after treatment with psychotherapy and drug therapy.”
Studies were required to focus on patients with a clinical diagnosis of BD or BPD; neuroimaging studies using functional MRI; coordinates of the peak activations in the stereotactic space of the Montreal Neurologic Institute or Talairach; treatment (pharmacologic or psychological) for patients with BD or BPD; and results of changes in brain activation after treatment, relative to a before-treatment condition.
Of 1,592 records, 34 studies (n = 912 subjects) met inclusion criteria and were selected and used in extracting the activation coordinates. The researchers extracted a total of 186 activity increase points and 90 activity decrease points. After combining these calculations, they found 12 increased activation clusters and 2 decreased activation clusters.
Of the studies, 23 focused on BD and 11 on BPD; 14 used psychotherapy, 18 used drug therapy, and 2 used a combination of both approaches.
Normalizing activation levels
Both treatments were associated with convergent activity increases and decreases in several brain regions: the anterior cingulate cortex, medial frontal gyrus, inferior frontal gyrus, cingulate gyrus, parahippocampal gyrus, and the posterior cingulate cortex.
The researchers then examined studies based on treatment method – psychotherapy or pharmacotherapy and the effect on the two disorders.
“After psychotherapy, the frontal lobe and temporal lobe were the primary brain regions in which activation changed, indicating a top-down effect of this therapy type, while after drug therapy, the limbic area was the region in which activation changed, indicating a ‘bottom-up’ effect,” said Dr. Li.
Dr. Li cited previous research pointing to functional and structural abnormalities in both disorders – especially in the default mode network (DMN) and frontolimbic network.
In particular, alterations in the amygdala and the parahippocampal gyrus are reported more frequently in BPD than in BD, whereas dysfunctional frontolimbic brain regions seem to underlie the emotional dysfunction in BPD. Several studies have also associated the impulsivity of BD with dysfunctions in the interplay of cortical-limbic circuits.
Dr. Li said the study findings suggest “that treatment may change these brain activation levels by acting on the abnormal brain circuit, such as the DMN and the frontolimbic network so as to ‘normalize’ its activity and improve symptoms.”
Specifically, brain regions with abnormally increased activation “showed decreased activation after treatment, and brain regions with abnormally decreased activation showed increased activation after treatment.”
Discrete, overlapping mechanisms
Commenting on the study, Roger S. McIntyre, MD, professor of psychiatry and pharmacology, University of Toronto, and head of the Mood Disorders Psychopharmacology Unit, said the study “provides additional support for the underlying neurobiological signature of bipolar disorder and a commonly encountered co-occurring condition – borderline personality disorder – having both discrete yet overlapping mechanisms.”
He found it interesting that “medications have a different principal target than psychosocial interventions, which has both academic and clinical implications.
“The academic implication is that we have reasons to believe that we will be in a position to parse the neurobiology of bipolar disorder or borderline personality disorder when we take an approach that isolates specific domains of psychopathology, which is what they [the authors] appear to be doing,” said Dr. McIntyre, who wasn’t associated with this research.
In addition, “from the clinical perspective, this provides a rationale for why we should be integrating pharmacotherapy with psychotherapy in people who have comorbid conditions like borderline personality disorder, which affects 20% of people living with bipolar disorder and 60% to 70% have borderline traits,” he added.
The research was supported by the Anhui Natural Science Foundation and Grants for Scientific Research from Anhui Medical University. Dr. Li and coauthors declared no relevant financial relationships. Dr. McIntyre has received research grant support from CIHR/GACD/National Natural Science Foundation of China and the Milken Institute; speaker/consultation fees from Lundbeck, Janssen, Alkermes, Neumora Therapeutics, Boehringer Ingelheim, Sage, Biogen, Mitsubishi Tanabe, Purdue, Pfizer, Otsuka, Takeda, Neurocrine, Sunovion, Bausch Health, Axsome, Novo Nordisk, Kris, Sanofi, Eisai, Intra-Cellular, NewBridge Pharmaceuticals, Viatris, AbbVie, Atai Life Sciences. Dr. McIntyre is a CEO of Braxia Scientific Corp.
A version of this article first appeared on Medscape.com.
A new study identifies specific brain regions involved in treatment response in bipolar disorder (BD) and borderline personality disorder (BPD), potentially paving the way for more targeted treatment.
In a meta-analysis of 34 studies that used neuroimaging to investigate changes in brain activation following psychotherapy and pharmacotherapy for BD and BPD, investigators found most brain regions showing abnormal activation in both conditions improved after treatment. In particular, changes in brain activity after psychotherapy were found primarily in the frontal areas, whereas pharmacotherapy largely altered the limbic areas.
“,” senior investigator Xiaoming Li, PhD, professor, department of medical psychology, Anhui Medical University, Hefei, China, told this news organization.
“It may also contribute to the identification of more accurate neuroimaging biomarkers for treatment of the two disorders and to the finding of more effective therapy,” Dr. Li said.
The study was published online in the Journal of Clinical Psychiatry.
Blurred boundary
Dr. Li called BDs and BPDs “difficult to diagnose and differentiate,” noting that the comorbidity rate is “very high.” Underestimating the boundary between BD and BPD “increases the risk of improper or harmful drug exposure,” since mood stabilizing drugs are “considered to be the key therapeutic intervention for BD, while psychotherapy is the key treatment for BPD.”
The “blurred boundary between BD and BPD is one of the reasons it is important to study the relationship between these two diseases,” the authors said.
Previous studies comparing the relationship between BD and BPD “did not explore the similarities and differences in brain mechanisms between these two disorders after treatment,” they pointed out.
Patients with BD have a different disease course and response to therapy, compared to patient with BPD patients. “Misdiagnosis may result in the patients receiving ineffective treatment, so it is particularly important to explore the neural mechanisms of the treatment of these two diseases,” Dr. Li said.
To investigate, the researchers used activation likelihood estimation (ALE) – a technique that examines coordinates of neuroimaging data gleaned from published studies – after searching several databases from inception until June 2021.
This approach was used to “evaluate the similarities and differences in the activation of different brain regions in patients with BD and BPD after treatment with psychotherapy and drug therapy.”
Studies were required to focus on patients with a clinical diagnosis of BD or BPD; neuroimaging studies using functional MRI; coordinates of the peak activations in the stereotactic space of the Montreal Neurologic Institute or Talairach; treatment (pharmacologic or psychological) for patients with BD or BPD; and results of changes in brain activation after treatment, relative to a before-treatment condition.
Of 1,592 records, 34 studies (n = 912 subjects) met inclusion criteria and were selected and used in extracting the activation coordinates. The researchers extracted a total of 186 activity increase points and 90 activity decrease points. After combining these calculations, they found 12 increased activation clusters and 2 decreased activation clusters.
Of the studies, 23 focused on BD and 11 on BPD; 14 used psychotherapy, 18 used drug therapy, and 2 used a combination of both approaches.
Normalizing activation levels
Both treatments were associated with convergent activity increases and decreases in several brain regions: the anterior cingulate cortex, medial frontal gyrus, inferior frontal gyrus, cingulate gyrus, parahippocampal gyrus, and the posterior cingulate cortex.
The researchers then examined studies based on treatment method – psychotherapy or pharmacotherapy and the effect on the two disorders.
“After psychotherapy, the frontal lobe and temporal lobe were the primary brain regions in which activation changed, indicating a top-down effect of this therapy type, while after drug therapy, the limbic area was the region in which activation changed, indicating a ‘bottom-up’ effect,” said Dr. Li.
Dr. Li cited previous research pointing to functional and structural abnormalities in both disorders – especially in the default mode network (DMN) and frontolimbic network.
In particular, alterations in the amygdala and the parahippocampal gyrus are reported more frequently in BPD than in BD, whereas dysfunctional frontolimbic brain regions seem to underlie the emotional dysfunction in BPD. Several studies have also associated the impulsivity of BD with dysfunctions in the interplay of cortical-limbic circuits.
Dr. Li said the study findings suggest “that treatment may change these brain activation levels by acting on the abnormal brain circuit, such as the DMN and the frontolimbic network so as to ‘normalize’ its activity and improve symptoms.”
Specifically, brain regions with abnormally increased activation “showed decreased activation after treatment, and brain regions with abnormally decreased activation showed increased activation after treatment.”
Discrete, overlapping mechanisms
Commenting on the study, Roger S. McIntyre, MD, professor of psychiatry and pharmacology, University of Toronto, and head of the Mood Disorders Psychopharmacology Unit, said the study “provides additional support for the underlying neurobiological signature of bipolar disorder and a commonly encountered co-occurring condition – borderline personality disorder – having both discrete yet overlapping mechanisms.”
He found it interesting that “medications have a different principal target than psychosocial interventions, which has both academic and clinical implications.
“The academic implication is that we have reasons to believe that we will be in a position to parse the neurobiology of bipolar disorder or borderline personality disorder when we take an approach that isolates specific domains of psychopathology, which is what they [the authors] appear to be doing,” said Dr. McIntyre, who wasn’t associated with this research.
In addition, “from the clinical perspective, this provides a rationale for why we should be integrating pharmacotherapy with psychotherapy in people who have comorbid conditions like borderline personality disorder, which affects 20% of people living with bipolar disorder and 60% to 70% have borderline traits,” he added.
The research was supported by the Anhui Natural Science Foundation and Grants for Scientific Research from Anhui Medical University. Dr. Li and coauthors declared no relevant financial relationships. Dr. McIntyre has received research grant support from CIHR/GACD/National Natural Science Foundation of China and the Milken Institute; speaker/consultation fees from Lundbeck, Janssen, Alkermes, Neumora Therapeutics, Boehringer Ingelheim, Sage, Biogen, Mitsubishi Tanabe, Purdue, Pfizer, Otsuka, Takeda, Neurocrine, Sunovion, Bausch Health, Axsome, Novo Nordisk, Kris, Sanofi, Eisai, Intra-Cellular, NewBridge Pharmaceuticals, Viatris, AbbVie, Atai Life Sciences. Dr. McIntyre is a CEO of Braxia Scientific Corp.
A version of this article first appeared on Medscape.com.
A new study identifies specific brain regions involved in treatment response in bipolar disorder (BD) and borderline personality disorder (BPD), potentially paving the way for more targeted treatment.
In a meta-analysis of 34 studies that used neuroimaging to investigate changes in brain activation following psychotherapy and pharmacotherapy for BD and BPD, investigators found most brain regions showing abnormal activation in both conditions improved after treatment. In particular, changes in brain activity after psychotherapy were found primarily in the frontal areas, whereas pharmacotherapy largely altered the limbic areas.
“,” senior investigator Xiaoming Li, PhD, professor, department of medical psychology, Anhui Medical University, Hefei, China, told this news organization.
“It may also contribute to the identification of more accurate neuroimaging biomarkers for treatment of the two disorders and to the finding of more effective therapy,” Dr. Li said.
The study was published online in the Journal of Clinical Psychiatry.
Blurred boundary
Dr. Li called BDs and BPDs “difficult to diagnose and differentiate,” noting that the comorbidity rate is “very high.” Underestimating the boundary between BD and BPD “increases the risk of improper or harmful drug exposure,” since mood stabilizing drugs are “considered to be the key therapeutic intervention for BD, while psychotherapy is the key treatment for BPD.”
The “blurred boundary between BD and BPD is one of the reasons it is important to study the relationship between these two diseases,” the authors said.
Previous studies comparing the relationship between BD and BPD “did not explore the similarities and differences in brain mechanisms between these two disorders after treatment,” they pointed out.
Patients with BD have a different disease course and response to therapy, compared to patient with BPD patients. “Misdiagnosis may result in the patients receiving ineffective treatment, so it is particularly important to explore the neural mechanisms of the treatment of these two diseases,” Dr. Li said.
To investigate, the researchers used activation likelihood estimation (ALE) – a technique that examines coordinates of neuroimaging data gleaned from published studies – after searching several databases from inception until June 2021.
This approach was used to “evaluate the similarities and differences in the activation of different brain regions in patients with BD and BPD after treatment with psychotherapy and drug therapy.”
Studies were required to focus on patients with a clinical diagnosis of BD or BPD; neuroimaging studies using functional MRI; coordinates of the peak activations in the stereotactic space of the Montreal Neurologic Institute or Talairach; treatment (pharmacologic or psychological) for patients with BD or BPD; and results of changes in brain activation after treatment, relative to a before-treatment condition.
Of 1,592 records, 34 studies (n = 912 subjects) met inclusion criteria and were selected and used in extracting the activation coordinates. The researchers extracted a total of 186 activity increase points and 90 activity decrease points. After combining these calculations, they found 12 increased activation clusters and 2 decreased activation clusters.
Of the studies, 23 focused on BD and 11 on BPD; 14 used psychotherapy, 18 used drug therapy, and 2 used a combination of both approaches.
Normalizing activation levels
Both treatments were associated with convergent activity increases and decreases in several brain regions: the anterior cingulate cortex, medial frontal gyrus, inferior frontal gyrus, cingulate gyrus, parahippocampal gyrus, and the posterior cingulate cortex.
The researchers then examined studies based on treatment method – psychotherapy or pharmacotherapy and the effect on the two disorders.
“After psychotherapy, the frontal lobe and temporal lobe were the primary brain regions in which activation changed, indicating a top-down effect of this therapy type, while after drug therapy, the limbic area was the region in which activation changed, indicating a ‘bottom-up’ effect,” said Dr. Li.
Dr. Li cited previous research pointing to functional and structural abnormalities in both disorders – especially in the default mode network (DMN) and frontolimbic network.
In particular, alterations in the amygdala and the parahippocampal gyrus are reported more frequently in BPD than in BD, whereas dysfunctional frontolimbic brain regions seem to underlie the emotional dysfunction in BPD. Several studies have also associated the impulsivity of BD with dysfunctions in the interplay of cortical-limbic circuits.
Dr. Li said the study findings suggest “that treatment may change these brain activation levels by acting on the abnormal brain circuit, such as the DMN and the frontolimbic network so as to ‘normalize’ its activity and improve symptoms.”
Specifically, brain regions with abnormally increased activation “showed decreased activation after treatment, and brain regions with abnormally decreased activation showed increased activation after treatment.”
Discrete, overlapping mechanisms
Commenting on the study, Roger S. McIntyre, MD, professor of psychiatry and pharmacology, University of Toronto, and head of the Mood Disorders Psychopharmacology Unit, said the study “provides additional support for the underlying neurobiological signature of bipolar disorder and a commonly encountered co-occurring condition – borderline personality disorder – having both discrete yet overlapping mechanisms.”
He found it interesting that “medications have a different principal target than psychosocial interventions, which has both academic and clinical implications.
“The academic implication is that we have reasons to believe that we will be in a position to parse the neurobiology of bipolar disorder or borderline personality disorder when we take an approach that isolates specific domains of psychopathology, which is what they [the authors] appear to be doing,” said Dr. McIntyre, who wasn’t associated with this research.
In addition, “from the clinical perspective, this provides a rationale for why we should be integrating pharmacotherapy with psychotherapy in people who have comorbid conditions like borderline personality disorder, which affects 20% of people living with bipolar disorder and 60% to 70% have borderline traits,” he added.
The research was supported by the Anhui Natural Science Foundation and Grants for Scientific Research from Anhui Medical University. Dr. Li and coauthors declared no relevant financial relationships. Dr. McIntyre has received research grant support from CIHR/GACD/National Natural Science Foundation of China and the Milken Institute; speaker/consultation fees from Lundbeck, Janssen, Alkermes, Neumora Therapeutics, Boehringer Ingelheim, Sage, Biogen, Mitsubishi Tanabe, Purdue, Pfizer, Otsuka, Takeda, Neurocrine, Sunovion, Bausch Health, Axsome, Novo Nordisk, Kris, Sanofi, Eisai, Intra-Cellular, NewBridge Pharmaceuticals, Viatris, AbbVie, Atai Life Sciences. Dr. McIntyre is a CEO of Braxia Scientific Corp.
A version of this article first appeared on Medscape.com.
FROM THE JOURNAL OF CLINICAL PSYCHIATRY
Early menopause, delayed HT tied to Alzheimer’s pathology
Investigators found elevated levels of tau protein in the brains of women who initiated HT more than 5 years after menopause onset, while those who started the therapy earlier had normal levels.
Tau levels were also higher in women who started menopause before age 45, either naturally or following surgery, but only in those who already had high levels of beta-amyloid.
The findings were published online in JAMA Neurology.
Hotly debated
Previous research has suggested the timing of menopause and HT initiation may be associated with AD. However, the current research is the first to suggest tau deposition may explain that link.
“There have been a lot of conflicting findings around whether HT induces risk for Alzheimer’s disease dementia or not, and – at least in our hands – our observational evidence suggests that any risk is fairly limited to those rarer cases when women might delay their initiation of HT considerably,” senior investigator Rachel Buckley, PhD, assistant investigator in neurology at Massachusetts General Hospital and assistant professor of neurology at Harvard Medical School, Boston, told this news organization.
The link between HT, dementia, and cognitive decline has been hotly debated since the initial release of findings from the Women’s Health Initiative Memory Study, reported 20 years ago.
Since then, dozens of studies have yielded conflicting evidence about HT and AD risk, with some showing a protective effect and others showing the treatment may increase AD risk.
For this study, researchers analyzed data from 292 cognitively unimpaired participants (66.1% female) in the Wisconsin Registry for Alzheimer Prevention. About half of the women had received HT.
Women had higher levels of tau measured on PET imaging than age-matched males, even after adjustment for APOE status and other potential confounders.
Higher tau levels were found in those with an earlier age at menopause (P < .001) and HT use (P = .008) compared with male sex; later menopause onset; or HT nonuse – but only in patients who also had a higher beta-amyloid burden.
Late initiation of HT (> 5 years following age at menopause) was associated with higher tau compared with early initiation (P = .001), regardless of amyloid levels.
Surprising finding
Although researchers expected to find that surgical history (specifically oophorectomy) might have a greater impact on risk, that wasn’t the case.
“Given that bilateral oophorectomy involves the removal of both ovaries, and the immediate ceasing of estrogen production, I had expected this to be the primary driver of higher tau levels,” Dr. Buckley said. “But early age at menopause – regardless of whether the genesis was natural or surgical – seemed to have similar impacts.”
These findings are the latest from Dr. Buckley’s group that indicate that women tend to have higher levels of tau than men, regardless of preexisting amyloid burden in the brain.
“We see this in healthy older women, women with dementia, and even in postmortem cases,” Dr. Buckley said. “It really remains to be seen whether women tend to accumulate tau faster in the brain than men, or whether this is simply a one-shot phenomenon that we see in observational studies at the baseline.”
“One could really flip this finding on its head and suggest that women are truly resilient to the disease,” she continued. “That is, they can hold much more tau in their brain and remain well enough to be studied, unlike men.”
Among the study’s limitations is that the data were collected at a single time point and did not include information on subsequent Alzheimer’s diagnosis or cognitive decline.
“It is important to remember that the participants in this study were not as representative of the general population in the United States, so we cannot extrapolate our findings to women from a range of socioeconomic, racial and ethnic backgrounds or education levels,” she said.
The study’s observational design left researchers unable to demonstrate causation. What’s more, the findings don’t support the assertion that hormone therapy may protect against AD, Dr. Buckley added.
“I would more confidently say that evidence from our work, and that of many others, seems to suggest that HT initiated around the time of menopause may be benign – not providing benefit or risk, at least in the context of Alzheimer’s disease risk,” she said.
Another important takeaway from the study, Dr. Buckley said, is that not all women are at high risk for AD.
“Often the headlines might make you think that most women are destined to progress to dementia, but this simply is not the case,” Dr. Buckley said. “We are now starting to really drill down on what might elevate risk for AD in women and use this information to better inform clinical trials and doctors on how best to think about treating these higher-risk groups.”
New mechanism?
Commenting on the findings, Pauline Maki, PhD, professor of psychiatry, psychology and obstetrics & gynecology at the University of Illinois at Chicago, called the study “interesting.”
“It identifies a new mechanism in humans that could underlie a possible link between sex hormones and dementia,” Dr. Maki said.
However, Dr. Maki noted that the study wasn’t randomized and information about menopause onset was self-reported.
“We must remember that many of the hypotheses about hormone therapy and brain health that came from observational studies were not validated in randomized trials, including the hypothesis that hormone therapy prevents dementia,” she said.
The findings don’t resolve the debate over hormone therapy and AD risk and point to the need for randomized, prospective studies on the topic, Dr. Maki added. Still, she said, they underscore the gender disparity in AD risk.
“It’s a good reminder to clinicians that women have a higher lifetime risk of Alzheimer’s disease and should be advised on factors that might lower their risk,” she said.
The study was funded by the National Institutes of Health. Dr. Buckley reports no relevant financial conflicts. Dr. Maki serves on the advisory boards for Astellas, Bayer, Johnson & Johnson, consults for Pfizer and Mithra, and has equity in Estrigenix, Midi-Health, and Alloy.
A version of this article originally appeared on Medscape.com.
Investigators found elevated levels of tau protein in the brains of women who initiated HT more than 5 years after menopause onset, while those who started the therapy earlier had normal levels.
Tau levels were also higher in women who started menopause before age 45, either naturally or following surgery, but only in those who already had high levels of beta-amyloid.
The findings were published online in JAMA Neurology.
Hotly debated
Previous research has suggested the timing of menopause and HT initiation may be associated with AD. However, the current research is the first to suggest tau deposition may explain that link.
“There have been a lot of conflicting findings around whether HT induces risk for Alzheimer’s disease dementia or not, and – at least in our hands – our observational evidence suggests that any risk is fairly limited to those rarer cases when women might delay their initiation of HT considerably,” senior investigator Rachel Buckley, PhD, assistant investigator in neurology at Massachusetts General Hospital and assistant professor of neurology at Harvard Medical School, Boston, told this news organization.
The link between HT, dementia, and cognitive decline has been hotly debated since the initial release of findings from the Women’s Health Initiative Memory Study, reported 20 years ago.
Since then, dozens of studies have yielded conflicting evidence about HT and AD risk, with some showing a protective effect and others showing the treatment may increase AD risk.
For this study, researchers analyzed data from 292 cognitively unimpaired participants (66.1% female) in the Wisconsin Registry for Alzheimer Prevention. About half of the women had received HT.
Women had higher levels of tau measured on PET imaging than age-matched males, even after adjustment for APOE status and other potential confounders.
Higher tau levels were found in those with an earlier age at menopause (P < .001) and HT use (P = .008) compared with male sex; later menopause onset; or HT nonuse – but only in patients who also had a higher beta-amyloid burden.
Late initiation of HT (> 5 years following age at menopause) was associated with higher tau compared with early initiation (P = .001), regardless of amyloid levels.
Surprising finding
Although researchers expected to find that surgical history (specifically oophorectomy) might have a greater impact on risk, that wasn’t the case.
“Given that bilateral oophorectomy involves the removal of both ovaries, and the immediate ceasing of estrogen production, I had expected this to be the primary driver of higher tau levels,” Dr. Buckley said. “But early age at menopause – regardless of whether the genesis was natural or surgical – seemed to have similar impacts.”
These findings are the latest from Dr. Buckley’s group that indicate that women tend to have higher levels of tau than men, regardless of preexisting amyloid burden in the brain.
“We see this in healthy older women, women with dementia, and even in postmortem cases,” Dr. Buckley said. “It really remains to be seen whether women tend to accumulate tau faster in the brain than men, or whether this is simply a one-shot phenomenon that we see in observational studies at the baseline.”
“One could really flip this finding on its head and suggest that women are truly resilient to the disease,” she continued. “That is, they can hold much more tau in their brain and remain well enough to be studied, unlike men.”
Among the study’s limitations is that the data were collected at a single time point and did not include information on subsequent Alzheimer’s diagnosis or cognitive decline.
“It is important to remember that the participants in this study were not as representative of the general population in the United States, so we cannot extrapolate our findings to women from a range of socioeconomic, racial and ethnic backgrounds or education levels,” she said.
The study’s observational design left researchers unable to demonstrate causation. What’s more, the findings don’t support the assertion that hormone therapy may protect against AD, Dr. Buckley added.
“I would more confidently say that evidence from our work, and that of many others, seems to suggest that HT initiated around the time of menopause may be benign – not providing benefit or risk, at least in the context of Alzheimer’s disease risk,” she said.
Another important takeaway from the study, Dr. Buckley said, is that not all women are at high risk for AD.
“Often the headlines might make you think that most women are destined to progress to dementia, but this simply is not the case,” Dr. Buckley said. “We are now starting to really drill down on what might elevate risk for AD in women and use this information to better inform clinical trials and doctors on how best to think about treating these higher-risk groups.”
New mechanism?
Commenting on the findings, Pauline Maki, PhD, professor of psychiatry, psychology and obstetrics & gynecology at the University of Illinois at Chicago, called the study “interesting.”
“It identifies a new mechanism in humans that could underlie a possible link between sex hormones and dementia,” Dr. Maki said.
However, Dr. Maki noted that the study wasn’t randomized and information about menopause onset was self-reported.
“We must remember that many of the hypotheses about hormone therapy and brain health that came from observational studies were not validated in randomized trials, including the hypothesis that hormone therapy prevents dementia,” she said.
The findings don’t resolve the debate over hormone therapy and AD risk and point to the need for randomized, prospective studies on the topic, Dr. Maki added. Still, she said, they underscore the gender disparity in AD risk.
“It’s a good reminder to clinicians that women have a higher lifetime risk of Alzheimer’s disease and should be advised on factors that might lower their risk,” she said.
The study was funded by the National Institutes of Health. Dr. Buckley reports no relevant financial conflicts. Dr. Maki serves on the advisory boards for Astellas, Bayer, Johnson & Johnson, consults for Pfizer and Mithra, and has equity in Estrigenix, Midi-Health, and Alloy.
A version of this article originally appeared on Medscape.com.
Investigators found elevated levels of tau protein in the brains of women who initiated HT more than 5 years after menopause onset, while those who started the therapy earlier had normal levels.
Tau levels were also higher in women who started menopause before age 45, either naturally or following surgery, but only in those who already had high levels of beta-amyloid.
The findings were published online in JAMA Neurology.
Hotly debated
Previous research has suggested the timing of menopause and HT initiation may be associated with AD. However, the current research is the first to suggest tau deposition may explain that link.
“There have been a lot of conflicting findings around whether HT induces risk for Alzheimer’s disease dementia or not, and – at least in our hands – our observational evidence suggests that any risk is fairly limited to those rarer cases when women might delay their initiation of HT considerably,” senior investigator Rachel Buckley, PhD, assistant investigator in neurology at Massachusetts General Hospital and assistant professor of neurology at Harvard Medical School, Boston, told this news organization.
The link between HT, dementia, and cognitive decline has been hotly debated since the initial release of findings from the Women’s Health Initiative Memory Study, reported 20 years ago.
Since then, dozens of studies have yielded conflicting evidence about HT and AD risk, with some showing a protective effect and others showing the treatment may increase AD risk.
For this study, researchers analyzed data from 292 cognitively unimpaired participants (66.1% female) in the Wisconsin Registry for Alzheimer Prevention. About half of the women had received HT.
Women had higher levels of tau measured on PET imaging than age-matched males, even after adjustment for APOE status and other potential confounders.
Higher tau levels were found in those with an earlier age at menopause (P < .001) and HT use (P = .008) compared with male sex; later menopause onset; or HT nonuse – but only in patients who also had a higher beta-amyloid burden.
Late initiation of HT (> 5 years following age at menopause) was associated with higher tau compared with early initiation (P = .001), regardless of amyloid levels.
Surprising finding
Although researchers expected to find that surgical history (specifically oophorectomy) might have a greater impact on risk, that wasn’t the case.
“Given that bilateral oophorectomy involves the removal of both ovaries, and the immediate ceasing of estrogen production, I had expected this to be the primary driver of higher tau levels,” Dr. Buckley said. “But early age at menopause – regardless of whether the genesis was natural or surgical – seemed to have similar impacts.”
These findings are the latest from Dr. Buckley’s group that indicate that women tend to have higher levels of tau than men, regardless of preexisting amyloid burden in the brain.
“We see this in healthy older women, women with dementia, and even in postmortem cases,” Dr. Buckley said. “It really remains to be seen whether women tend to accumulate tau faster in the brain than men, or whether this is simply a one-shot phenomenon that we see in observational studies at the baseline.”
“One could really flip this finding on its head and suggest that women are truly resilient to the disease,” she continued. “That is, they can hold much more tau in their brain and remain well enough to be studied, unlike men.”
Among the study’s limitations is that the data were collected at a single time point and did not include information on subsequent Alzheimer’s diagnosis or cognitive decline.
“It is important to remember that the participants in this study were not as representative of the general population in the United States, so we cannot extrapolate our findings to women from a range of socioeconomic, racial and ethnic backgrounds or education levels,” she said.
The study’s observational design left researchers unable to demonstrate causation. What’s more, the findings don’t support the assertion that hormone therapy may protect against AD, Dr. Buckley added.
“I would more confidently say that evidence from our work, and that of many others, seems to suggest that HT initiated around the time of menopause may be benign – not providing benefit or risk, at least in the context of Alzheimer’s disease risk,” she said.
Another important takeaway from the study, Dr. Buckley said, is that not all women are at high risk for AD.
“Often the headlines might make you think that most women are destined to progress to dementia, but this simply is not the case,” Dr. Buckley said. “We are now starting to really drill down on what might elevate risk for AD in women and use this information to better inform clinical trials and doctors on how best to think about treating these higher-risk groups.”
New mechanism?
Commenting on the findings, Pauline Maki, PhD, professor of psychiatry, psychology and obstetrics & gynecology at the University of Illinois at Chicago, called the study “interesting.”
“It identifies a new mechanism in humans that could underlie a possible link between sex hormones and dementia,” Dr. Maki said.
However, Dr. Maki noted that the study wasn’t randomized and information about menopause onset was self-reported.
“We must remember that many of the hypotheses about hormone therapy and brain health that came from observational studies were not validated in randomized trials, including the hypothesis that hormone therapy prevents dementia,” she said.
The findings don’t resolve the debate over hormone therapy and AD risk and point to the need for randomized, prospective studies on the topic, Dr. Maki added. Still, she said, they underscore the gender disparity in AD risk.
“It’s a good reminder to clinicians that women have a higher lifetime risk of Alzheimer’s disease and should be advised on factors that might lower their risk,” she said.
The study was funded by the National Institutes of Health. Dr. Buckley reports no relevant financial conflicts. Dr. Maki serves on the advisory boards for Astellas, Bayer, Johnson & Johnson, consults for Pfizer and Mithra, and has equity in Estrigenix, Midi-Health, and Alloy.
A version of this article originally appeared on Medscape.com.
FROM JAMA NEUROLOGY
Obstructive sleep apnea linked to early cognitive decline
In a pilot study out of King’s College London, participants with severe OSA experienced worse executive functioning as well as social and emotional recognition versus healthy controls.
Major risk factors for OSA include obesity, high blood pressure, smoking, high cholesterol, and being middle-aged or older. Because some researchers have hypothesized that cognitive deficits could be driven by such comorbidities, the study investigators recruited middle-aged men with no medical comorbidities.
“Traditionally, we were more concerned with sleep apnea’s metabolic and cardiovascular comorbidities, and indeed, when cognitive deficits were demonstrated, most were attributed to them, and yet, our patients and their partners/families commonly tell us differently,” lead investigator Ivana Rosenzweig, MD, PhD, of King’s College London, who is also a consultant in sleep medicine and neuropsychiatry at Guy’s and St Thomas’ Hospital, London, said in an interview.
“Our findings provide a very important first step towards challenging the long-standing dogma that sleep apnea has little to do with the brain – apart from causing sleepiness – and that it is a predominantly nonneuro/psychiatric illness,” added Dr. Rosenzweig.
The findings were published online in Frontiers in Sleep.
Brain changes
The researchers wanted to understand how OSA may be linked to cognitive decline in the absence of cardiovascular and metabolic conditions.
To accomplish this, the investigators studied 27 men between the ages of 35 and 70 with a new diagnosis of mild to severe OSA without any comorbidities (16 with mild OSA and 11 with severe OSA). They also studied a control group of seven men matched for age, body mass index, and education level.
The team tested participants’ cognitive performance using the Cambridge Neuropsychological Test Automated Battery and found that the most significant deficits for the OSA group, compared with controls, were in areas of visual matching ability (P < .0001), short-term visual recognition memory, nonverbal patterns, executive functioning and attentional set-shifting (P < .001), psychomotor functioning, and social cognition and emotional recognition (P < .05).
On the latter two tests, impaired participants were less likely to accurately identify the emotion on computer-generated faces. Those with mild OSA performed better than those with severe OSA on these tasks, but rarely worse than controls.
Dr. Rosenzweig noted that the findings were one-of-a-kind because of the recruitment of patients with OSA who were otherwise healthy and nonobese, “something one rarely sees in the sleep clinic, where we commonly encounter patients with already developed comorbidities.
“In order to truly revolutionize the treatment for our patients, it is important to understand how much the accompanying comorbidities, such as systemic hypertension, obesity, diabetes, hyperlipidemia, and other various serious cardiovascular and metabolic diseases and how much the illness itself may shape the demonstrated cognitive deficits,” she said.
She also said that “it is widely agreed that medical problems in middle age may predispose to increased prevalence of dementia in later years.
Moreover, the very link between sleep apnea and Alzheimer’s, vascular and mixed dementia is increasingly demonstrated,” said Dr. Rosenzweig.
Although women typically have a lower prevalence of OSA than men, Dr. Rosenzweig said women were not included in the study “because we are too complex. As a lifelong feminist it pains me to say this, but to get any authoritative answer on our physiology, we need decent funding in place so that we can take into account all the intricacies of the changes of our sleep, physiology, and metabolism.
“While there is always lots of noise about how important it is to answer these questions, there are only very limited funds available for the sleep research,” she added.
Dr. Rosenzweig’s future research will focus on the potential link between OSA and neuroinflammation.
In a comment, Liza Ashbrook, MD, associate professor of neurology at the University of California, San Francisco, said the findings “add to the growing list of negative health consequences associated with sleep apnea.”
She said that, if the cognitive changes found in the study are, in fact, caused by OSA, it is unclear whether they are the beginning of long-term cognitive changes or a symptom of fragmented sleep that may be reversible.
Dr. Ashbrook said she would be interested in seeing research on understanding the effect of OSA treatment on the affected cognitive domains.
The study was funded by the Wellcome Trust. No relevant financial relationships were reported.
A version of this article originally appeared on Medscape.com.
In a pilot study out of King’s College London, participants with severe OSA experienced worse executive functioning as well as social and emotional recognition versus healthy controls.
Major risk factors for OSA include obesity, high blood pressure, smoking, high cholesterol, and being middle-aged or older. Because some researchers have hypothesized that cognitive deficits could be driven by such comorbidities, the study investigators recruited middle-aged men with no medical comorbidities.
“Traditionally, we were more concerned with sleep apnea’s metabolic and cardiovascular comorbidities, and indeed, when cognitive deficits were demonstrated, most were attributed to them, and yet, our patients and their partners/families commonly tell us differently,” lead investigator Ivana Rosenzweig, MD, PhD, of King’s College London, who is also a consultant in sleep medicine and neuropsychiatry at Guy’s and St Thomas’ Hospital, London, said in an interview.
“Our findings provide a very important first step towards challenging the long-standing dogma that sleep apnea has little to do with the brain – apart from causing sleepiness – and that it is a predominantly nonneuro/psychiatric illness,” added Dr. Rosenzweig.
The findings were published online in Frontiers in Sleep.
Brain changes
The researchers wanted to understand how OSA may be linked to cognitive decline in the absence of cardiovascular and metabolic conditions.
To accomplish this, the investigators studied 27 men between the ages of 35 and 70 with a new diagnosis of mild to severe OSA without any comorbidities (16 with mild OSA and 11 with severe OSA). They also studied a control group of seven men matched for age, body mass index, and education level.
The team tested participants’ cognitive performance using the Cambridge Neuropsychological Test Automated Battery and found that the most significant deficits for the OSA group, compared with controls, were in areas of visual matching ability (P < .0001), short-term visual recognition memory, nonverbal patterns, executive functioning and attentional set-shifting (P < .001), psychomotor functioning, and social cognition and emotional recognition (P < .05).
On the latter two tests, impaired participants were less likely to accurately identify the emotion on computer-generated faces. Those with mild OSA performed better than those with severe OSA on these tasks, but rarely worse than controls.
Dr. Rosenzweig noted that the findings were one-of-a-kind because of the recruitment of patients with OSA who were otherwise healthy and nonobese, “something one rarely sees in the sleep clinic, where we commonly encounter patients with already developed comorbidities.
“In order to truly revolutionize the treatment for our patients, it is important to understand how much the accompanying comorbidities, such as systemic hypertension, obesity, diabetes, hyperlipidemia, and other various serious cardiovascular and metabolic diseases and how much the illness itself may shape the demonstrated cognitive deficits,” she said.
She also said that “it is widely agreed that medical problems in middle age may predispose to increased prevalence of dementia in later years.
Moreover, the very link between sleep apnea and Alzheimer’s, vascular and mixed dementia is increasingly demonstrated,” said Dr. Rosenzweig.
Although women typically have a lower prevalence of OSA than men, Dr. Rosenzweig said women were not included in the study “because we are too complex. As a lifelong feminist it pains me to say this, but to get any authoritative answer on our physiology, we need decent funding in place so that we can take into account all the intricacies of the changes of our sleep, physiology, and metabolism.
“While there is always lots of noise about how important it is to answer these questions, there are only very limited funds available for the sleep research,” she added.
Dr. Rosenzweig’s future research will focus on the potential link between OSA and neuroinflammation.
In a comment, Liza Ashbrook, MD, associate professor of neurology at the University of California, San Francisco, said the findings “add to the growing list of negative health consequences associated with sleep apnea.”
She said that, if the cognitive changes found in the study are, in fact, caused by OSA, it is unclear whether they are the beginning of long-term cognitive changes or a symptom of fragmented sleep that may be reversible.
Dr. Ashbrook said she would be interested in seeing research on understanding the effect of OSA treatment on the affected cognitive domains.
The study was funded by the Wellcome Trust. No relevant financial relationships were reported.
A version of this article originally appeared on Medscape.com.
In a pilot study out of King’s College London, participants with severe OSA experienced worse executive functioning as well as social and emotional recognition versus healthy controls.
Major risk factors for OSA include obesity, high blood pressure, smoking, high cholesterol, and being middle-aged or older. Because some researchers have hypothesized that cognitive deficits could be driven by such comorbidities, the study investigators recruited middle-aged men with no medical comorbidities.
“Traditionally, we were more concerned with sleep apnea’s metabolic and cardiovascular comorbidities, and indeed, when cognitive deficits were demonstrated, most were attributed to them, and yet, our patients and their partners/families commonly tell us differently,” lead investigator Ivana Rosenzweig, MD, PhD, of King’s College London, who is also a consultant in sleep medicine and neuropsychiatry at Guy’s and St Thomas’ Hospital, London, said in an interview.
“Our findings provide a very important first step towards challenging the long-standing dogma that sleep apnea has little to do with the brain – apart from causing sleepiness – and that it is a predominantly nonneuro/psychiatric illness,” added Dr. Rosenzweig.
The findings were published online in Frontiers in Sleep.
Brain changes
The researchers wanted to understand how OSA may be linked to cognitive decline in the absence of cardiovascular and metabolic conditions.
To accomplish this, the investigators studied 27 men between the ages of 35 and 70 with a new diagnosis of mild to severe OSA without any comorbidities (16 with mild OSA and 11 with severe OSA). They also studied a control group of seven men matched for age, body mass index, and education level.
The team tested participants’ cognitive performance using the Cambridge Neuropsychological Test Automated Battery and found that the most significant deficits for the OSA group, compared with controls, were in areas of visual matching ability (P < .0001), short-term visual recognition memory, nonverbal patterns, executive functioning and attentional set-shifting (P < .001), psychomotor functioning, and social cognition and emotional recognition (P < .05).
On the latter two tests, impaired participants were less likely to accurately identify the emotion on computer-generated faces. Those with mild OSA performed better than those with severe OSA on these tasks, but rarely worse than controls.
Dr. Rosenzweig noted that the findings were one-of-a-kind because of the recruitment of patients with OSA who were otherwise healthy and nonobese, “something one rarely sees in the sleep clinic, where we commonly encounter patients with already developed comorbidities.
“In order to truly revolutionize the treatment for our patients, it is important to understand how much the accompanying comorbidities, such as systemic hypertension, obesity, diabetes, hyperlipidemia, and other various serious cardiovascular and metabolic diseases and how much the illness itself may shape the demonstrated cognitive deficits,” she said.
She also said that “it is widely agreed that medical problems in middle age may predispose to increased prevalence of dementia in later years.
Moreover, the very link between sleep apnea and Alzheimer’s, vascular and mixed dementia is increasingly demonstrated,” said Dr. Rosenzweig.
Although women typically have a lower prevalence of OSA than men, Dr. Rosenzweig said women were not included in the study “because we are too complex. As a lifelong feminist it pains me to say this, but to get any authoritative answer on our physiology, we need decent funding in place so that we can take into account all the intricacies of the changes of our sleep, physiology, and metabolism.
“While there is always lots of noise about how important it is to answer these questions, there are only very limited funds available for the sleep research,” she added.
Dr. Rosenzweig’s future research will focus on the potential link between OSA and neuroinflammation.
In a comment, Liza Ashbrook, MD, associate professor of neurology at the University of California, San Francisco, said the findings “add to the growing list of negative health consequences associated with sleep apnea.”
She said that, if the cognitive changes found in the study are, in fact, caused by OSA, it is unclear whether they are the beginning of long-term cognitive changes or a symptom of fragmented sleep that may be reversible.
Dr. Ashbrook said she would be interested in seeing research on understanding the effect of OSA treatment on the affected cognitive domains.
The study was funded by the Wellcome Trust. No relevant financial relationships were reported.
A version of this article originally appeared on Medscape.com.
FROM FRONTIERS IN SLEEP
Food insecurity linked to more rapid cognitive decline in seniors
Food insecurity is linked to a more rapid decline in executive function in older adults, a new study shows.
The findings were reported just weeks after a pandemic-era expansion in Supplemental Nutrition Assistance Program benefits ended, leading to less food assistance for about 5 million people over age 60 who participate in the program.
“Even though we found only a very small association between food insecurity and executive function, it’s still meaningful, because food insecurity is something we can prevent,” lead investigator Boeun Kim, PhD, MPH, RN, postdoctoral fellow at Johns Hopkins University School of Nursing, Baltimore, told this news organization.
The findings were published online in JAMA Network Open.
National data
The number of Americans over 60 with food insecurity has more than doubled since 2007, with an estimated 5.2 million older adults reporting food insecurity in 2020.
Prior studies have linked malnutrition and food insecurity to a decline in cognitive function. Participating in food assistance programs such as SNAP is associated with slower memory decline in older adults.
However, to date, there has been no longitudinal study that has used data from a nationally representative sample of older Americans, which, Dr. Kim said, could limit generalizability of the findings.
To address that issue, investigators analyzed data from 3,037 participants in the National Health and Aging Trends Study, which includes community dwellers age 65 and older who receive Medicare.
Participants reported food insecurity over 7 years, from 2012 to 2019. Data on immediate memory, delayed memory, and executive function were from 2013 to 2020.
Food insecurity was defined as going without groceries due to limited ability or social support; a lack of hot meals related to functional limitation or no help; going without eating because of the inability to feed oneself or no available support; skipping meals due to insufficient food or money; or skipping meals for 5 days or more.
Immediate and delayed recall were assessed using a 10-item word-list memory task, and executive function was measured using a clock drawing test. Each year’s cognitive functions were linked to the prior year’s food insecurity data.
Over 7 years, 417 people, or 12.1%, experienced food insecurity at least once.
Those with food insecurity were more likely to be older, female, part of racial and ethnic minority groups, living alone, obese, and have a lower income and educational attainment, depressive symptoms, social isolation and disability, compared with those without food insecurity.
After adjusting for age, sex, race/ethnicity, educational level, income, marital status, body mass index, functional disability, social isolation, and other potential confounders, researchers found that food insecurity was associated with a more rapid decline in executive function (mean difference in annual change in executive function score, −0.04; 95% confidence interval, −0.09 to −0.003).
Food insecurity was not associated with baseline cognitive function scores or changes in immediate or delayed recall.
“Clinicians should be aware of the experience of food insecurity and the higher risk of cognitive decline so maybe they could do universal screening and refer people with food insecurity to programs that can help them access nutritious meals,” Dr. Kim said.
A sign of other problems?
Thomas Vidic, MD, said food insecurity often goes hand-in-hand with lack of medication adherence, lack of regular medical care, and a host of other issues. Dr. Vidic is a neurologist at the Elkhart Clinic, Ind., and an adjunct clinical professor of neurology at Indiana University.
“When a person has food insecurity, they likely have other problems, and they’re going to degenerate faster,” said Dr. Vidic, who was not part of the study. “This is one important component, and it’s one more way of getting a handle on people who are failing.”
Dr. Vidic, who has dealt with the issue of food insecurity with his own patients, said he suspects the self-report nature of the study may hide the true scale of the problem.
“I suspect the numbers might actually be higher,” he said, adding that the study fills a gap in the literature with a large, nationally representative sample.
“We’re looking for issues to help with the elderly as far as what can we do to keep dementia from progressing,” he said. “There are some things that make sense, but we’ve never had this kind of data before.”
The study was funded by the National Institute on Aging. Dr. Kim and Dr. Vidic have reported no relevant financial relationships.
A version of this article first appeared on Medscape.com.
Food insecurity is linked to a more rapid decline in executive function in older adults, a new study shows.
The findings were reported just weeks after a pandemic-era expansion in Supplemental Nutrition Assistance Program benefits ended, leading to less food assistance for about 5 million people over age 60 who participate in the program.
“Even though we found only a very small association between food insecurity and executive function, it’s still meaningful, because food insecurity is something we can prevent,” lead investigator Boeun Kim, PhD, MPH, RN, postdoctoral fellow at Johns Hopkins University School of Nursing, Baltimore, told this news organization.
The findings were published online in JAMA Network Open.
National data
The number of Americans over 60 with food insecurity has more than doubled since 2007, with an estimated 5.2 million older adults reporting food insecurity in 2020.
Prior studies have linked malnutrition and food insecurity to a decline in cognitive function. Participating in food assistance programs such as SNAP is associated with slower memory decline in older adults.
However, to date, there has been no longitudinal study that has used data from a nationally representative sample of older Americans, which, Dr. Kim said, could limit generalizability of the findings.
To address that issue, investigators analyzed data from 3,037 participants in the National Health and Aging Trends Study, which includes community dwellers age 65 and older who receive Medicare.
Participants reported food insecurity over 7 years, from 2012 to 2019. Data on immediate memory, delayed memory, and executive function were from 2013 to 2020.
Food insecurity was defined as going without groceries due to limited ability or social support; a lack of hot meals related to functional limitation or no help; going without eating because of the inability to feed oneself or no available support; skipping meals due to insufficient food or money; or skipping meals for 5 days or more.
Immediate and delayed recall were assessed using a 10-item word-list memory task, and executive function was measured using a clock drawing test. Each year’s cognitive functions were linked to the prior year’s food insecurity data.
Over 7 years, 417 people, or 12.1%, experienced food insecurity at least once.
Those with food insecurity were more likely to be older, female, part of racial and ethnic minority groups, living alone, obese, and have a lower income and educational attainment, depressive symptoms, social isolation and disability, compared with those without food insecurity.
After adjusting for age, sex, race/ethnicity, educational level, income, marital status, body mass index, functional disability, social isolation, and other potential confounders, researchers found that food insecurity was associated with a more rapid decline in executive function (mean difference in annual change in executive function score, −0.04; 95% confidence interval, −0.09 to −0.003).
Food insecurity was not associated with baseline cognitive function scores or changes in immediate or delayed recall.
“Clinicians should be aware of the experience of food insecurity and the higher risk of cognitive decline so maybe they could do universal screening and refer people with food insecurity to programs that can help them access nutritious meals,” Dr. Kim said.
A sign of other problems?
Thomas Vidic, MD, said food insecurity often goes hand-in-hand with lack of medication adherence, lack of regular medical care, and a host of other issues. Dr. Vidic is a neurologist at the Elkhart Clinic, Ind., and an adjunct clinical professor of neurology at Indiana University.
“When a person has food insecurity, they likely have other problems, and they’re going to degenerate faster,” said Dr. Vidic, who was not part of the study. “This is one important component, and it’s one more way of getting a handle on people who are failing.”
Dr. Vidic, who has dealt with the issue of food insecurity with his own patients, said he suspects the self-report nature of the study may hide the true scale of the problem.
“I suspect the numbers might actually be higher,” he said, adding that the study fills a gap in the literature with a large, nationally representative sample.
“We’re looking for issues to help with the elderly as far as what can we do to keep dementia from progressing,” he said. “There are some things that make sense, but we’ve never had this kind of data before.”
The study was funded by the National Institute on Aging. Dr. Kim and Dr. Vidic have reported no relevant financial relationships.
A version of this article first appeared on Medscape.com.
Food insecurity is linked to a more rapid decline in executive function in older adults, a new study shows.
The findings were reported just weeks after a pandemic-era expansion in Supplemental Nutrition Assistance Program benefits ended, leading to less food assistance for about 5 million people over age 60 who participate in the program.
“Even though we found only a very small association between food insecurity and executive function, it’s still meaningful, because food insecurity is something we can prevent,” lead investigator Boeun Kim, PhD, MPH, RN, postdoctoral fellow at Johns Hopkins University School of Nursing, Baltimore, told this news organization.
The findings were published online in JAMA Network Open.
National data
The number of Americans over 60 with food insecurity has more than doubled since 2007, with an estimated 5.2 million older adults reporting food insecurity in 2020.
Prior studies have linked malnutrition and food insecurity to a decline in cognitive function. Participating in food assistance programs such as SNAP is associated with slower memory decline in older adults.
However, to date, there has been no longitudinal study that has used data from a nationally representative sample of older Americans, which, Dr. Kim said, could limit generalizability of the findings.
To address that issue, investigators analyzed data from 3,037 participants in the National Health and Aging Trends Study, which includes community dwellers age 65 and older who receive Medicare.
Participants reported food insecurity over 7 years, from 2012 to 2019. Data on immediate memory, delayed memory, and executive function were from 2013 to 2020.
Food insecurity was defined as going without groceries due to limited ability or social support; a lack of hot meals related to functional limitation or no help; going without eating because of the inability to feed oneself or no available support; skipping meals due to insufficient food or money; or skipping meals for 5 days or more.
Immediate and delayed recall were assessed using a 10-item word-list memory task, and executive function was measured using a clock drawing test. Each year’s cognitive functions were linked to the prior year’s food insecurity data.
Over 7 years, 417 people, or 12.1%, experienced food insecurity at least once.
Those with food insecurity were more likely to be older, female, part of racial and ethnic minority groups, living alone, obese, and have a lower income and educational attainment, depressive symptoms, social isolation and disability, compared with those without food insecurity.
After adjusting for age, sex, race/ethnicity, educational level, income, marital status, body mass index, functional disability, social isolation, and other potential confounders, researchers found that food insecurity was associated with a more rapid decline in executive function (mean difference in annual change in executive function score, −0.04; 95% confidence interval, −0.09 to −0.003).
Food insecurity was not associated with baseline cognitive function scores or changes in immediate or delayed recall.
“Clinicians should be aware of the experience of food insecurity and the higher risk of cognitive decline so maybe they could do universal screening and refer people with food insecurity to programs that can help them access nutritious meals,” Dr. Kim said.
A sign of other problems?
Thomas Vidic, MD, said food insecurity often goes hand-in-hand with lack of medication adherence, lack of regular medical care, and a host of other issues. Dr. Vidic is a neurologist at the Elkhart Clinic, Ind., and an adjunct clinical professor of neurology at Indiana University.
“When a person has food insecurity, they likely have other problems, and they’re going to degenerate faster,” said Dr. Vidic, who was not part of the study. “This is one important component, and it’s one more way of getting a handle on people who are failing.”
Dr. Vidic, who has dealt with the issue of food insecurity with his own patients, said he suspects the self-report nature of the study may hide the true scale of the problem.
“I suspect the numbers might actually be higher,” he said, adding that the study fills a gap in the literature with a large, nationally representative sample.
“We’re looking for issues to help with the elderly as far as what can we do to keep dementia from progressing,” he said. “There are some things that make sense, but we’ve never had this kind of data before.”
The study was funded by the National Institute on Aging. Dr. Kim and Dr. Vidic have reported no relevant financial relationships.
A version of this article first appeared on Medscape.com.
Self-fitted and audiologist-fitted hearing aids equal for mild to moderate hearing loss
Self-fitted over-the-counter (OTC) hearing aids may be an effective option for individuals with mild to moderate hearing loss, a small randomized effectiveness trial reports. OTC devices yielded 6-week patient-perceived and clinical outcomes comparable to those with audiologist-fitted hearing aids, In fact, at week 2, the self-fitted group had a small but meaningful advantage on two of the four study outcome measures.
“After support and fine-tuning were provided to the self-fitting (remote support) and audiologist-fitted groups, no clinically meaningful differences were evident in any outcome measures at the end of the 6-week trial,” wrote researchers led by Karina C. De Sousa, PhD, a postdoctoral researcher in the department of speech-language pathology and audiology at the University of Pretoria, South Africa.
Their findings appear in JAMA Otolaryngology–Head & Neck Surgery.
Hearing aid uptake is low even in populations with adequate access to audiological resources, the authors noted, with hearing aid use in U.S. adults who could benefit estimated at about 20%. Currently, an estimated 22.9 million older Americans with audiometric hearing loss do not use hearing aids.
Major barriers have been access and affordability, Dr. De Sousa and associates wrote, and until recently, people with hearing loss could obtain hearing aids only after consultation with a credentialed dispenser. “The World Health Organization estimates that over 2.5 billion people will experience some degree of hearing loss by 2050,” Dr. De Sousa said in an interview. “This new category of self-fitting hearing aids opens up newer care pathways for people with mild to moderate hearing loss.”
The study
From April to August 2022 the trial recruited 68 participants (51.6% men) with mild-to-moderate self-reported hearing loss, a mean age of 63.6 years, and no ear disease within the past 90 days. They were randomized to a self-fitted commercially available device (Lexi Lumen), with instructional material on set-up and remote support, or to the same unit fitted by an audiologist. The majority in both arms were new users and were similar in age and baseline hearing scores.
The primary outcome measure was patient-reported hearing aid benefit, measured by the Abbreviated Profile of Hearing Aid Benefit (APHAB) questionnaire. This scale evaluates auditory acuity before and after amplification by such criteria as ease of communication, background noise, reverberation, aversiveness, and global hearing status.
Secondary measures included the International Outcome Inventory for Hearing Aids (IOI-HA) and speech recognition in noise measured using an abbreviated speech-in-noise test and a digits-in-noise test. Measures were taken at baseline, week 2, and week 6 after fitting. After the 2-week field trial, the self-fitting arm had an initial advantage on the self-reported APHAB: difference, Cohen d = −.5 (95% confidence interval [CI], −1.0 to 0). It also fared better on the IOI-HA: effect size, r = 0.3 (95% CI, .0 to –.5), but not on speech recognition in noise.
One member of the self-fitting arm withdrew owing to an unrelated middle-ear infection.
“While these results are promising, it is essential to note that OTC hearing aids are not a one-size-fits-all approach,” Dr. De Sousa said. “If a person has ear disease symptoms or hearing loss that is too severe, they have to consult a trained hearing health care professional.” She added that proper use of a self-fitted OTC hearing aid requires a degree of digital proficiency, as many devices are set up using a smartphone.
This study was supported by the National Institutes of Health and by the hearX Group, which provided the Lexie Lumen devices and software support for data collection. Dr. De Sousa reported nonfinancial support from hearX as well as consulting fees from hearX outside of the submitted work. A coauthor reported grant support from the UK’s National Institute for Health and Care Research Manchester Biomedical Research Centre, and fees from hearX during and outside of the study. Another coauthor disclosed fees, equity, and grant support from hearX during the conduct of the study.
Self-fitted over-the-counter (OTC) hearing aids may be an effective option for individuals with mild to moderate hearing loss, a small randomized effectiveness trial reports. OTC devices yielded 6-week patient-perceived and clinical outcomes comparable to those with audiologist-fitted hearing aids, In fact, at week 2, the self-fitted group had a small but meaningful advantage on two of the four study outcome measures.
“After support and fine-tuning were provided to the self-fitting (remote support) and audiologist-fitted groups, no clinically meaningful differences were evident in any outcome measures at the end of the 6-week trial,” wrote researchers led by Karina C. De Sousa, PhD, a postdoctoral researcher in the department of speech-language pathology and audiology at the University of Pretoria, South Africa.
Their findings appear in JAMA Otolaryngology–Head & Neck Surgery.
Hearing aid uptake is low even in populations with adequate access to audiological resources, the authors noted, with hearing aid use in U.S. adults who could benefit estimated at about 20%. Currently, an estimated 22.9 million older Americans with audiometric hearing loss do not use hearing aids.
Major barriers have been access and affordability, Dr. De Sousa and associates wrote, and until recently, people with hearing loss could obtain hearing aids only after consultation with a credentialed dispenser. “The World Health Organization estimates that over 2.5 billion people will experience some degree of hearing loss by 2050,” Dr. De Sousa said in an interview. “This new category of self-fitting hearing aids opens up newer care pathways for people with mild to moderate hearing loss.”
The study
From April to August 2022 the trial recruited 68 participants (51.6% men) with mild-to-moderate self-reported hearing loss, a mean age of 63.6 years, and no ear disease within the past 90 days. They were randomized to a self-fitted commercially available device (Lexi Lumen), with instructional material on set-up and remote support, or to the same unit fitted by an audiologist. The majority in both arms were new users and were similar in age and baseline hearing scores.
The primary outcome measure was patient-reported hearing aid benefit, measured by the Abbreviated Profile of Hearing Aid Benefit (APHAB) questionnaire. This scale evaluates auditory acuity before and after amplification by such criteria as ease of communication, background noise, reverberation, aversiveness, and global hearing status.
Secondary measures included the International Outcome Inventory for Hearing Aids (IOI-HA) and speech recognition in noise measured using an abbreviated speech-in-noise test and a digits-in-noise test. Measures were taken at baseline, week 2, and week 6 after fitting. After the 2-week field trial, the self-fitting arm had an initial advantage on the self-reported APHAB: difference, Cohen d = −.5 (95% confidence interval [CI], −1.0 to 0). It also fared better on the IOI-HA: effect size, r = 0.3 (95% CI, .0 to –.5), but not on speech recognition in noise.
One member of the self-fitting arm withdrew owing to an unrelated middle-ear infection.
“While these results are promising, it is essential to note that OTC hearing aids are not a one-size-fits-all approach,” Dr. De Sousa said. “If a person has ear disease symptoms or hearing loss that is too severe, they have to consult a trained hearing health care professional.” She added that proper use of a self-fitted OTC hearing aid requires a degree of digital proficiency, as many devices are set up using a smartphone.
This study was supported by the National Institutes of Health and by the hearX Group, which provided the Lexie Lumen devices and software support for data collection. Dr. De Sousa reported nonfinancial support from hearX as well as consulting fees from hearX outside of the submitted work. A coauthor reported grant support from the UK’s National Institute for Health and Care Research Manchester Biomedical Research Centre, and fees from hearX during and outside of the study. Another coauthor disclosed fees, equity, and grant support from hearX during the conduct of the study.
Self-fitted over-the-counter (OTC) hearing aids may be an effective option for individuals with mild to moderate hearing loss, a small randomized effectiveness trial reports. OTC devices yielded 6-week patient-perceived and clinical outcomes comparable to those with audiologist-fitted hearing aids, In fact, at week 2, the self-fitted group had a small but meaningful advantage on two of the four study outcome measures.
“After support and fine-tuning were provided to the self-fitting (remote support) and audiologist-fitted groups, no clinically meaningful differences were evident in any outcome measures at the end of the 6-week trial,” wrote researchers led by Karina C. De Sousa, PhD, a postdoctoral researcher in the department of speech-language pathology and audiology at the University of Pretoria, South Africa.
Their findings appear in JAMA Otolaryngology–Head & Neck Surgery.
Hearing aid uptake is low even in populations with adequate access to audiological resources, the authors noted, with hearing aid use in U.S. adults who could benefit estimated at about 20%. Currently, an estimated 22.9 million older Americans with audiometric hearing loss do not use hearing aids.
Major barriers have been access and affordability, Dr. De Sousa and associates wrote, and until recently, people with hearing loss could obtain hearing aids only after consultation with a credentialed dispenser. “The World Health Organization estimates that over 2.5 billion people will experience some degree of hearing loss by 2050,” Dr. De Sousa said in an interview. “This new category of self-fitting hearing aids opens up newer care pathways for people with mild to moderate hearing loss.”
The study
From April to August 2022 the trial recruited 68 participants (51.6% men) with mild-to-moderate self-reported hearing loss, a mean age of 63.6 years, and no ear disease within the past 90 days. They were randomized to a self-fitted commercially available device (Lexi Lumen), with instructional material on set-up and remote support, or to the same unit fitted by an audiologist. The majority in both arms were new users and were similar in age and baseline hearing scores.
The primary outcome measure was patient-reported hearing aid benefit, measured by the Abbreviated Profile of Hearing Aid Benefit (APHAB) questionnaire. This scale evaluates auditory acuity before and after amplification by such criteria as ease of communication, background noise, reverberation, aversiveness, and global hearing status.
Secondary measures included the International Outcome Inventory for Hearing Aids (IOI-HA) and speech recognition in noise measured using an abbreviated speech-in-noise test and a digits-in-noise test. Measures were taken at baseline, week 2, and week 6 after fitting. After the 2-week field trial, the self-fitting arm had an initial advantage on the self-reported APHAB: difference, Cohen d = −.5 (95% confidence interval [CI], −1.0 to 0). It also fared better on the IOI-HA: effect size, r = 0.3 (95% CI, .0 to –.5), but not on speech recognition in noise.
One member of the self-fitting arm withdrew owing to an unrelated middle-ear infection.
“While these results are promising, it is essential to note that OTC hearing aids are not a one-size-fits-all approach,” Dr. De Sousa said. “If a person has ear disease symptoms or hearing loss that is too severe, they have to consult a trained hearing health care professional.” She added that proper use of a self-fitted OTC hearing aid requires a degree of digital proficiency, as many devices are set up using a smartphone.
This study was supported by the National Institutes of Health and by the hearX Group, which provided the Lexie Lumen devices and software support for data collection. Dr. De Sousa reported nonfinancial support from hearX as well as consulting fees from hearX outside of the submitted work. A coauthor reported grant support from the UK’s National Institute for Health and Care Research Manchester Biomedical Research Centre, and fees from hearX during and outside of the study. Another coauthor disclosed fees, equity, and grant support from hearX during the conduct of the study.
FROM JAMA OTOLARYNGOLOGY–HEAD & NECK SURGERY
Urban green and blue spaces linked to less psychological distress
The findings of the study, which was released ahead of its scheduled presentation at the annual meeting of the American Academy of Neurology, build on a growing understanding of the relationship between types and qualities of urban environments and dementia risk.
Adithya Vegaraju, a student at Washington State University, Spokane, led the study, which looked at data from the Washington State Behavioral Risk Factor Surveillance System to assess prevalence of serious psychological distress among 42,980 Washington state residents aged 65 and over.
The data, collected between 2011 and 2019, used a self-reported questionnaire to determine serious psychological distress, which is defined as a level of mental distress considered debilitating enough to warrant treatment.
Mr. Vegaraju and his coauthor Solmaz Amiri, DDes, also of Washington State University, used ZIP codes, along with U.S. census data, to approximate the urban adults’ proximity to green and blue spaces.
After controlling for potential confounders of age, sex, ethnicity, education, and marital status, the investigators found that people living within half a mile of green or blue spaces had a 17% lower risk of experiencing serious psychological distress, compared with people living farther from these spaces, the investigators said in a news release.
Implications for cognitive decline and dementia?
Psychological distress in adults has been linked in population-based longitudinal studies to later cognitive decline and dementia. One study in older adults found the risk of dementia to be more than 50% higher among adults aged 50-70 with persistent depression. Blue and green spaces have also been investigated in relation to neurodegenerative disease among older adults; a 2022 study looking at data from some 62 million Medicare beneficiaries found those living in areas with more vegetation saw lower risk of hospitalizations for Alzheimer’s disease and related dementias.
“Since we lack effective prevention methods or treatments for mild cognitive impairment and dementia, we need to get creative in how we look at these issues,” Dr. Amiri commented in a press statement about her and Mr. Vegaraju’s findings. “Our hope is that this study showing better mental health among people living close to parks and water will trigger other studies about how these benefits work and whether this proximity can help prevent or delay mild cognitive impairment and dementia.”
The investigators acknowledged that their findings were limited by reliance on a self-reported measure of psychological distress.
A bidirectional connection with depression and dementia
In a comment, Anjum Hajat, PhD, an epidemiologist at University of Washington School of Public Health in Seattle who has also studied the relationship between green space and dementia risk in older adults, noted some further apparent limitations of the new study, for which only an abstract was available at publication.
“It has been shown that people with depression are at higher risk for dementia, but the opposite is also true,” Dr. Hajat commented. “Those with dementia are more likely to develop depression. This bidirectionality makes this study abstract difficult to interpret since the study is based on cross-sectional data: Individuals are not followed over time to see which develops first, dementia or depression.”
Additionally, Dr. Hajat noted, the data used to determine proximity to green and blue spaces did not allow for the calculation of precise distances between subjects’ homes and these spaces.
Mr. Vegaraju and Dr. Amiri’s study had no outside support, and the investigators declared no conflicts of interest. Dr. Hajat declared no conflicts of interest.
The findings of the study, which was released ahead of its scheduled presentation at the annual meeting of the American Academy of Neurology, build on a growing understanding of the relationship between types and qualities of urban environments and dementia risk.
Adithya Vegaraju, a student at Washington State University, Spokane, led the study, which looked at data from the Washington State Behavioral Risk Factor Surveillance System to assess prevalence of serious psychological distress among 42,980 Washington state residents aged 65 and over.
The data, collected between 2011 and 2019, used a self-reported questionnaire to determine serious psychological distress, which is defined as a level of mental distress considered debilitating enough to warrant treatment.
Mr. Vegaraju and his coauthor Solmaz Amiri, DDes, also of Washington State University, used ZIP codes, along with U.S. census data, to approximate the urban adults’ proximity to green and blue spaces.
After controlling for potential confounders of age, sex, ethnicity, education, and marital status, the investigators found that people living within half a mile of green or blue spaces had a 17% lower risk of experiencing serious psychological distress, compared with people living farther from these spaces, the investigators said in a news release.
Implications for cognitive decline and dementia?
Psychological distress in adults has been linked in population-based longitudinal studies to later cognitive decline and dementia. One study in older adults found the risk of dementia to be more than 50% higher among adults aged 50-70 with persistent depression. Blue and green spaces have also been investigated in relation to neurodegenerative disease among older adults; a 2022 study looking at data from some 62 million Medicare beneficiaries found those living in areas with more vegetation saw lower risk of hospitalizations for Alzheimer’s disease and related dementias.
“Since we lack effective prevention methods or treatments for mild cognitive impairment and dementia, we need to get creative in how we look at these issues,” Dr. Amiri commented in a press statement about her and Mr. Vegaraju’s findings. “Our hope is that this study showing better mental health among people living close to parks and water will trigger other studies about how these benefits work and whether this proximity can help prevent or delay mild cognitive impairment and dementia.”
The investigators acknowledged that their findings were limited by reliance on a self-reported measure of psychological distress.
A bidirectional connection with depression and dementia
In a comment, Anjum Hajat, PhD, an epidemiologist at University of Washington School of Public Health in Seattle who has also studied the relationship between green space and dementia risk in older adults, noted some further apparent limitations of the new study, for which only an abstract was available at publication.
“It has been shown that people with depression are at higher risk for dementia, but the opposite is also true,” Dr. Hajat commented. “Those with dementia are more likely to develop depression. This bidirectionality makes this study abstract difficult to interpret since the study is based on cross-sectional data: Individuals are not followed over time to see which develops first, dementia or depression.”
Additionally, Dr. Hajat noted, the data used to determine proximity to green and blue spaces did not allow for the calculation of precise distances between subjects’ homes and these spaces.
Mr. Vegaraju and Dr. Amiri’s study had no outside support, and the investigators declared no conflicts of interest. Dr. Hajat declared no conflicts of interest.
The findings of the study, which was released ahead of its scheduled presentation at the annual meeting of the American Academy of Neurology, build on a growing understanding of the relationship between types and qualities of urban environments and dementia risk.
Adithya Vegaraju, a student at Washington State University, Spokane, led the study, which looked at data from the Washington State Behavioral Risk Factor Surveillance System to assess prevalence of serious psychological distress among 42,980 Washington state residents aged 65 and over.
The data, collected between 2011 and 2019, used a self-reported questionnaire to determine serious psychological distress, which is defined as a level of mental distress considered debilitating enough to warrant treatment.
Mr. Vegaraju and his coauthor Solmaz Amiri, DDes, also of Washington State University, used ZIP codes, along with U.S. census data, to approximate the urban adults’ proximity to green and blue spaces.
After controlling for potential confounders of age, sex, ethnicity, education, and marital status, the investigators found that people living within half a mile of green or blue spaces had a 17% lower risk of experiencing serious psychological distress, compared with people living farther from these spaces, the investigators said in a news release.
Implications for cognitive decline and dementia?
Psychological distress in adults has been linked in population-based longitudinal studies to later cognitive decline and dementia. One study in older adults found the risk of dementia to be more than 50% higher among adults aged 50-70 with persistent depression. Blue and green spaces have also been investigated in relation to neurodegenerative disease among older adults; a 2022 study looking at data from some 62 million Medicare beneficiaries found those living in areas with more vegetation saw lower risk of hospitalizations for Alzheimer’s disease and related dementias.
“Since we lack effective prevention methods or treatments for mild cognitive impairment and dementia, we need to get creative in how we look at these issues,” Dr. Amiri commented in a press statement about her and Mr. Vegaraju’s findings. “Our hope is that this study showing better mental health among people living close to parks and water will trigger other studies about how these benefits work and whether this proximity can help prevent or delay mild cognitive impairment and dementia.”
The investigators acknowledged that their findings were limited by reliance on a self-reported measure of psychological distress.
A bidirectional connection with depression and dementia
In a comment, Anjum Hajat, PhD, an epidemiologist at University of Washington School of Public Health in Seattle who has also studied the relationship between green space and dementia risk in older adults, noted some further apparent limitations of the new study, for which only an abstract was available at publication.
“It has been shown that people with depression are at higher risk for dementia, but the opposite is also true,” Dr. Hajat commented. “Those with dementia are more likely to develop depression. This bidirectionality makes this study abstract difficult to interpret since the study is based on cross-sectional data: Individuals are not followed over time to see which develops first, dementia or depression.”
Additionally, Dr. Hajat noted, the data used to determine proximity to green and blue spaces did not allow for the calculation of precise distances between subjects’ homes and these spaces.
Mr. Vegaraju and Dr. Amiri’s study had no outside support, and the investigators declared no conflicts of interest. Dr. Hajat declared no conflicts of interest.
FROM AAN 2023
Phototherapy a safe, effective, inexpensive new option for dementia?
It may be “one of the most promising interventions for improving core symptoms” of the disease.
A new meta-analysis shows that patients with dementia who received phototherapy experienced significant cognitive improvement, compared with those who received usual treatment. However, there were no differences between study groups in terms of improved depression, agitation, or sleep problems.
“Our meta-analysis indicates that phototherapy improved cognitive function in patients with dementia. ... This suggests that phototherapy may be one of the most promising non-pharmacological interventions for improving core symptoms of dementia,” wrote the investigators, led by Xinlian Lu, Peking University, Beijing.
The study was published online in Brain and Behavior.
A new treatment option?
“As drug treatment for dementia has limitations such as medical contraindications, limited efficacy, and adverse effects, nonpharmacological therapy has been increasingly regarded as a critical part of comprehensive dementia care,” the investigators noted.
Phototherapy, which utilizes full-spectrum bright light (usually > 600 lux) or wavelength-specific light (for example, blue-enriched or blue-green), is a “promising nonpharmacological therapy” that is noninvasive, inexpensive, and safe.
Most studies of phototherapy have focused on sleep. Findings have shown “high heterogeneity” among the interventions and the populations in the studies, and results have been “inconsistent.” In addition, the effect of phototherapy on cognitive function and behavioral and psychological symptoms of dementia (BPSD) “still need to be clarified.”
In the systematic review and meta-analysis, the investigators examined the effects of phototherapy on cognitive function, BPSD, and sleep in older adults with dementia.
They searched several databases for randomized controlled trials that investigated phototherapy interventions for elderly patients. The primary outcome was cognitive function, which was assessed via the Mini-Mental State Examination (MMSE).
Secondary outcomes included BPSD, including agitation, anxiety, irritability, depression, anxiety, and sleep disturbances, as assessed by the Cornell Scale for Depression in Dementia (CSDD), the Cohen-Mansfield Agitation Inventory (CMAI), the Neuropsychiatric Inventory (NPI), and measures of sleep, including total sleep time (TST), sleep efficiency (SE), and sleep disorders, as assessed by the Sleep Disorder Inventory (SDI).
To be included in the analysis, individual studies had to focus on elderly adults who had some form of dementia. In addition, a group receiving a phototherapy intervention had to be compared with a nonintervention group, and the study had to specify one of the above-defined outcomes.
The review included phototherapy interventions of all forms, frequencies, and durations, including use of bright light, LED light, and blue or blue-green light.
Regulating circadian rhythm
Twelve studies met the researchers’ criteria. They included a total of 766 patients with dementia – 426 in the intervention group and 340 in the control group. The mean ages ranged from 73.73 to 85.9 years, and there was a greater number of female than male participants.
Of the studies, seven employed routine daily light in the control group, while the others used either dim light (≤ 50 lux) or devices without light.
The researchers found “significant positive intervention effects” for global cognitive function. Improvements in postintervention MMSE scores differed significantly between the experimental groups and control groups (mean difference, 2.68; 95% confidence interval, 1.38-3.98; I2 = 0%).
No significant differences were found in the effects of intervention on depression symptoms, as evidenced in CSDD scores (MD, −0.70; 95% CI, −3.10 to 1.70; I2 = 81%).
Among patients with higher CMAI scores, which indicate more severe agitation behaviors, there was a “trend of decreasing CMAI scores” after phototherapy (MD, −3.12; 95% CI, −8.05 to 1.82; I2 = 0%). No significant difference in NPI scores was observed between the two groups.
Similarly, no significant difference was found between the two groups in TST, SE, or SDI scores.
Adverse effects were infrequent and were not severe. Two of the 426 patients in the intervention group experienced mild ocular irritation, and one experienced slight transient redness of the forehead.
Light “may compensate for the reduction in the visual sensory input of patients with dementia and stimulate specific neurons in the suprachiasmatic nucleus of the hypothalamus to regulate circadian rhythm,” the researchers suggested.
“As circadian rhythms are involved in optimal brain function, light supplementation may act on the synchronizing/phase-shifting effects of circadian rhythms to improve cognitive function,” they added.
They note that the light box is the “most commonly used device in phototherapy.” Light boxes provide full-spectrum bright light, usually greater than 2,500 lux. The duration is 30 minutes in the daytime, and treatment lasts 4-8 weeks.
The investigators cautioned that the light box should be placed 60 cm away from the patient or above the patient’s eye level. They said that a ceiling-mounted light is a “good choice” for providing whole-day phototherapy, since such lights do not interfere with the patient’s daily routine, reduce the demand on staff, and contribute to better adherence.
Phototherapy helmets and glasses are also available. These portable devices “allow for better control of light intensity and are ergonomic without interfering with patients’ normal activities.”
The researchers noted that “further well-designed studies are needed to explore the most effective clinical implementation conditions, including device type, duration, frequency, and time.”
Easy to use
Mariana Figueiro, PhD, professor and director of the Light and Health Research Center, department of population health medicine, Icahn School of Medicine at Mount Sinai, New York, said light is the “major stimulus for the circadian system, and a robust light-dark pattern daily (which can be given by light therapy during the day) improves sleep and behavior and reduces depression and agitation.”
Dr. Figueiro, who was not involved with the current study, noted that patients with dementia “have sleep issues, which can further affect their cognition; improvement in sleep leads to improvement in cognition,” and this may be an underlying mechanism associated with these results.
The clinical significance of the study “is that this is a nonpharmacological intervention and can be easily applied in the homes or controlled facilities, and it can be used with any other medication,” she pointed out.
“More importantly, sleep medications have negative side effects, so the use of nonpharmacological interventions improving sleep and cognition is great for clinical practice,” she added.
However, she took issue with the finding that phototherapy was not effective for depression and agitation, noting that there were “too few studies to say for sure that light therapy is ineffective at improving these outcomes.”
The research received no external funding. The authors and Dr. Figueiro disclosed no relevant financial relationships.
A version of this article first appeared on Medscape.com.
It may be “one of the most promising interventions for improving core symptoms” of the disease.
A new meta-analysis shows that patients with dementia who received phototherapy experienced significant cognitive improvement, compared with those who received usual treatment. However, there were no differences between study groups in terms of improved depression, agitation, or sleep problems.
“Our meta-analysis indicates that phototherapy improved cognitive function in patients with dementia. ... This suggests that phototherapy may be one of the most promising non-pharmacological interventions for improving core symptoms of dementia,” wrote the investigators, led by Xinlian Lu, Peking University, Beijing.
The study was published online in Brain and Behavior.
A new treatment option?
“As drug treatment for dementia has limitations such as medical contraindications, limited efficacy, and adverse effects, nonpharmacological therapy has been increasingly regarded as a critical part of comprehensive dementia care,” the investigators noted.
Phototherapy, which utilizes full-spectrum bright light (usually > 600 lux) or wavelength-specific light (for example, blue-enriched or blue-green), is a “promising nonpharmacological therapy” that is noninvasive, inexpensive, and safe.
Most studies of phototherapy have focused on sleep. Findings have shown “high heterogeneity” among the interventions and the populations in the studies, and results have been “inconsistent.” In addition, the effect of phototherapy on cognitive function and behavioral and psychological symptoms of dementia (BPSD) “still need to be clarified.”
In the systematic review and meta-analysis, the investigators examined the effects of phototherapy on cognitive function, BPSD, and sleep in older adults with dementia.
They searched several databases for randomized controlled trials that investigated phototherapy interventions for elderly patients. The primary outcome was cognitive function, which was assessed via the Mini-Mental State Examination (MMSE).
Secondary outcomes included BPSD, including agitation, anxiety, irritability, depression, anxiety, and sleep disturbances, as assessed by the Cornell Scale for Depression in Dementia (CSDD), the Cohen-Mansfield Agitation Inventory (CMAI), the Neuropsychiatric Inventory (NPI), and measures of sleep, including total sleep time (TST), sleep efficiency (SE), and sleep disorders, as assessed by the Sleep Disorder Inventory (SDI).
To be included in the analysis, individual studies had to focus on elderly adults who had some form of dementia. In addition, a group receiving a phototherapy intervention had to be compared with a nonintervention group, and the study had to specify one of the above-defined outcomes.
The review included phototherapy interventions of all forms, frequencies, and durations, including use of bright light, LED light, and blue or blue-green light.
Regulating circadian rhythm
Twelve studies met the researchers’ criteria. They included a total of 766 patients with dementia – 426 in the intervention group and 340 in the control group. The mean ages ranged from 73.73 to 85.9 years, and there was a greater number of female than male participants.
Of the studies, seven employed routine daily light in the control group, while the others used either dim light (≤ 50 lux) or devices without light.
The researchers found “significant positive intervention effects” for global cognitive function. Improvements in postintervention MMSE scores differed significantly between the experimental groups and control groups (mean difference, 2.68; 95% confidence interval, 1.38-3.98; I2 = 0%).
No significant differences were found in the effects of intervention on depression symptoms, as evidenced in CSDD scores (MD, −0.70; 95% CI, −3.10 to 1.70; I2 = 81%).
Among patients with higher CMAI scores, which indicate more severe agitation behaviors, there was a “trend of decreasing CMAI scores” after phototherapy (MD, −3.12; 95% CI, −8.05 to 1.82; I2 = 0%). No significant difference in NPI scores was observed between the two groups.
Similarly, no significant difference was found between the two groups in TST, SE, or SDI scores.
Adverse effects were infrequent and were not severe. Two of the 426 patients in the intervention group experienced mild ocular irritation, and one experienced slight transient redness of the forehead.
Light “may compensate for the reduction in the visual sensory input of patients with dementia and stimulate specific neurons in the suprachiasmatic nucleus of the hypothalamus to regulate circadian rhythm,” the researchers suggested.
“As circadian rhythms are involved in optimal brain function, light supplementation may act on the synchronizing/phase-shifting effects of circadian rhythms to improve cognitive function,” they added.
They note that the light box is the “most commonly used device in phototherapy.” Light boxes provide full-spectrum bright light, usually greater than 2,500 lux. The duration is 30 minutes in the daytime, and treatment lasts 4-8 weeks.
The investigators cautioned that the light box should be placed 60 cm away from the patient or above the patient’s eye level. They said that a ceiling-mounted light is a “good choice” for providing whole-day phototherapy, since such lights do not interfere with the patient’s daily routine, reduce the demand on staff, and contribute to better adherence.
Phototherapy helmets and glasses are also available. These portable devices “allow for better control of light intensity and are ergonomic without interfering with patients’ normal activities.”
The researchers noted that “further well-designed studies are needed to explore the most effective clinical implementation conditions, including device type, duration, frequency, and time.”
Easy to use
Mariana Figueiro, PhD, professor and director of the Light and Health Research Center, department of population health medicine, Icahn School of Medicine at Mount Sinai, New York, said light is the “major stimulus for the circadian system, and a robust light-dark pattern daily (which can be given by light therapy during the day) improves sleep and behavior and reduces depression and agitation.”
Dr. Figueiro, who was not involved with the current study, noted that patients with dementia “have sleep issues, which can further affect their cognition; improvement in sleep leads to improvement in cognition,” and this may be an underlying mechanism associated with these results.
The clinical significance of the study “is that this is a nonpharmacological intervention and can be easily applied in the homes or controlled facilities, and it can be used with any other medication,” she pointed out.
“More importantly, sleep medications have negative side effects, so the use of nonpharmacological interventions improving sleep and cognition is great for clinical practice,” she added.
However, she took issue with the finding that phototherapy was not effective for depression and agitation, noting that there were “too few studies to say for sure that light therapy is ineffective at improving these outcomes.”
The research received no external funding. The authors and Dr. Figueiro disclosed no relevant financial relationships.
A version of this article first appeared on Medscape.com.
It may be “one of the most promising interventions for improving core symptoms” of the disease.
A new meta-analysis shows that patients with dementia who received phototherapy experienced significant cognitive improvement, compared with those who received usual treatment. However, there were no differences between study groups in terms of improved depression, agitation, or sleep problems.
“Our meta-analysis indicates that phototherapy improved cognitive function in patients with dementia. ... This suggests that phototherapy may be one of the most promising non-pharmacological interventions for improving core symptoms of dementia,” wrote the investigators, led by Xinlian Lu, Peking University, Beijing.
The study was published online in Brain and Behavior.
A new treatment option?
“As drug treatment for dementia has limitations such as medical contraindications, limited efficacy, and adverse effects, nonpharmacological therapy has been increasingly regarded as a critical part of comprehensive dementia care,” the investigators noted.
Phototherapy, which utilizes full-spectrum bright light (usually > 600 lux) or wavelength-specific light (for example, blue-enriched or blue-green), is a “promising nonpharmacological therapy” that is noninvasive, inexpensive, and safe.
Most studies of phototherapy have focused on sleep. Findings have shown “high heterogeneity” among the interventions and the populations in the studies, and results have been “inconsistent.” In addition, the effect of phototherapy on cognitive function and behavioral and psychological symptoms of dementia (BPSD) “still need to be clarified.”
In the systematic review and meta-analysis, the investigators examined the effects of phototherapy on cognitive function, BPSD, and sleep in older adults with dementia.
They searched several databases for randomized controlled trials that investigated phototherapy interventions for elderly patients. The primary outcome was cognitive function, which was assessed via the Mini-Mental State Examination (MMSE).
Secondary outcomes included BPSD, including agitation, anxiety, irritability, depression, anxiety, and sleep disturbances, as assessed by the Cornell Scale for Depression in Dementia (CSDD), the Cohen-Mansfield Agitation Inventory (CMAI), the Neuropsychiatric Inventory (NPI), and measures of sleep, including total sleep time (TST), sleep efficiency (SE), and sleep disorders, as assessed by the Sleep Disorder Inventory (SDI).
To be included in the analysis, individual studies had to focus on elderly adults who had some form of dementia. In addition, a group receiving a phototherapy intervention had to be compared with a nonintervention group, and the study had to specify one of the above-defined outcomes.
The review included phototherapy interventions of all forms, frequencies, and durations, including use of bright light, LED light, and blue or blue-green light.
Regulating circadian rhythm
Twelve studies met the researchers’ criteria. They included a total of 766 patients with dementia – 426 in the intervention group and 340 in the control group. The mean ages ranged from 73.73 to 85.9 years, and there was a greater number of female than male participants.
Of the studies, seven employed routine daily light in the control group, while the others used either dim light (≤ 50 lux) or devices without light.
The researchers found “significant positive intervention effects” for global cognitive function. Improvements in postintervention MMSE scores differed significantly between the experimental groups and control groups (mean difference, 2.68; 95% confidence interval, 1.38-3.98; I2 = 0%).
No significant differences were found in the effects of intervention on depression symptoms, as evidenced in CSDD scores (MD, −0.70; 95% CI, −3.10 to 1.70; I2 = 81%).
Among patients with higher CMAI scores, which indicate more severe agitation behaviors, there was a “trend of decreasing CMAI scores” after phototherapy (MD, −3.12; 95% CI, −8.05 to 1.82; I2 = 0%). No significant difference in NPI scores was observed between the two groups.
Similarly, no significant difference was found between the two groups in TST, SE, or SDI scores.
Adverse effects were infrequent and were not severe. Two of the 426 patients in the intervention group experienced mild ocular irritation, and one experienced slight transient redness of the forehead.
Light “may compensate for the reduction in the visual sensory input of patients with dementia and stimulate specific neurons in the suprachiasmatic nucleus of the hypothalamus to regulate circadian rhythm,” the researchers suggested.
“As circadian rhythms are involved in optimal brain function, light supplementation may act on the synchronizing/phase-shifting effects of circadian rhythms to improve cognitive function,” they added.
They note that the light box is the “most commonly used device in phototherapy.” Light boxes provide full-spectrum bright light, usually greater than 2,500 lux. The duration is 30 minutes in the daytime, and treatment lasts 4-8 weeks.
The investigators cautioned that the light box should be placed 60 cm away from the patient or above the patient’s eye level. They said that a ceiling-mounted light is a “good choice” for providing whole-day phototherapy, since such lights do not interfere with the patient’s daily routine, reduce the demand on staff, and contribute to better adherence.
Phototherapy helmets and glasses are also available. These portable devices “allow for better control of light intensity and are ergonomic without interfering with patients’ normal activities.”
The researchers noted that “further well-designed studies are needed to explore the most effective clinical implementation conditions, including device type, duration, frequency, and time.”
Easy to use
Mariana Figueiro, PhD, professor and director of the Light and Health Research Center, department of population health medicine, Icahn School of Medicine at Mount Sinai, New York, said light is the “major stimulus for the circadian system, and a robust light-dark pattern daily (which can be given by light therapy during the day) improves sleep and behavior and reduces depression and agitation.”
Dr. Figueiro, who was not involved with the current study, noted that patients with dementia “have sleep issues, which can further affect their cognition; improvement in sleep leads to improvement in cognition,” and this may be an underlying mechanism associated with these results.
The clinical significance of the study “is that this is a nonpharmacological intervention and can be easily applied in the homes or controlled facilities, and it can be used with any other medication,” she pointed out.
“More importantly, sleep medications have negative side effects, so the use of nonpharmacological interventions improving sleep and cognition is great for clinical practice,” she added.
However, she took issue with the finding that phototherapy was not effective for depression and agitation, noting that there were “too few studies to say for sure that light therapy is ineffective at improving these outcomes.”
The research received no external funding. The authors and Dr. Figueiro disclosed no relevant financial relationships.
A version of this article first appeared on Medscape.com.
FROM BRAIN AND BEHAVIOR