Michele G. Sullivan

LOS ANGELES – A single look at the gut microbiome of patients with Alzheimer’s disease (AD) suggests an interaction between anti-inflammatory gut bacteria and long-term exposure to an investigational sigma 1 receptor agonist.

After up to 148 weeks treatment with Anavex 2-73, patients with stable or improved functional scores showed significantly higher levels of both Ruminococcaceae and Porphyromonadaceae, compared with patients who had declining function. Both bacterial families produce butyrate, an anti-inflammatory short-chain fatty acid.

Conversely, poor response was associated with a low level of Verrucomicrobia, a mucin-degrading phylum thought to be important in gut homeostasis. These bacteria live mainly in the intestinal mucosa – the physical interface between the microbiome and the rest of the body.

The data, presented at the Alzheimer’s Association International Conference, represent the first microbiome measurements reported in a clinical trial of an investigational Alzheimer’s therapy. Because they come from a single sample taken from a small group in an extension study, without a baseline comparator, it’s impossible to know what these associations mean. But the findings are enough to nudge Anavex Life Sciences into adding microbiome changes to its new study of Anavex 2-73, according to Christopher Missling, PhD, president and chief executive officer of the company.

The study, ramping up now, aims to recruit 450 patients with mild AD. They will be randomized to high-dose or mid-dose Anavex 2-73 for 48 weeks. The primary outcomes are measures of cognition and function. Stool sampling at baseline and at the end of the study will be included as well, Dr. Missling said in an interview.

Anavex 2-73 is a sigma-1 receptor agonist. A chaperone protein, sigma-1 is activated in response to acute and chronic cellular stressors, several which are important in neurodegeneration. The sigma-1 receptor is found on neurons and glia in many areas of the central nervous system. It modulates several processes implicated in neurodegenerative diseases, including glutamate and calcium activity, reaction to oxidative stress, and mitochondrial function. There is some evidence that sigma-1 receptor activation can induce neuronal regrowth and functional recovery after stroke. It also appears to play a role in helping cells clear misfolded proteins – a pathway that makes it an attractive drug target in Alzheimer’s disease, as well as other neurodegenerative diseases with aberrant proteins, such as Parkinson’s and Huntington’s diseases.

Anavex 2-73’s phase 2 development started with a 5-week crossover trial of 32 patients. This was followed by a 52-week, open-label extension trial of 10, 20, 30, and 50 mg/day orally, in which each patient was titrated to the maximum tolerated dose. The main endpoints were change on the Mini Mental State Exam and change on the Alzheimer’s Disease Cooperative Study-activities of daily living (ADCS-ADL) scale.

At 57 weeks, six patients had improved on the Mini Mental State Exam score: four with high plasma levels and two with low plasma levels, correlating to the dosage obtained. On the functional measure of activities of daily living, nine patients had improved, including five with high plasma levels, three with moderate levels, and one with a low level. One patient, with a moderate level, remained stable. The remaining 14 patients declined.

The company then enrolled 21 of the cohort in a 208-week extension trial, primarily because of patient request, Dr. Missling said. “They know they are doing better. Their families know they’re doing better. They did not want to give this up.”

Last fall, the company released 148-week functional and cognitive data confirming the initial findings: Patients with higher plasma levels (correlating with higher doses) declined about 2 points on the ADCS-ADL scale, compared with a mean decline of about 25 points among those with lower blood levels – an 88% difference in favor of treatment. Cognition scores showed a similar pattern, with the high-concentration group declining 64% less than the low-concentration group.

Sixteen patients consented to stool sampling. A sophisticated computer algorithm characterized the microbiome of each, measuring the relative abundance of phyla. Microbiome analysis wasn’t included as an endpoint in the original study design because, at that time, the idea of a connection between AD and the gut microbiome was barely on the research radar.

Things shifted dramatically in 2017, with a seminal paper finding that germ-free mice inoculated with stool from Parkinson’s patients developed Parkinson’s symptoms. This study was widely heralded as a breakthrough in the field – the first time any neurodegenerative disease had been conclusively linked to dysregulations in the human microbiome.

Last year, Vo Van Giau, PhD, of Gachon University, South Korea, and his colleagues published an extensive review of the data suggesting a similar link with Alzheimer’s disease.

Dr. Giau and his coauthors laid out a potential pathogenic pathway for this interaction.

“The microbiota is closely related to neurological dysfunction and plays a significant role in neuroinflammation through the secretion of proinflammatory cytokines. Changes in the homeostatic state of the microbiota lead to increased intestinal permeability, which may promote the translocation of bacteria and endotoxins across the epithelial barrier, inducing an immunological response associated with the production of proinflammatory cytokines. The activation of both enteric neurons and glial cells may result in various neurological disorders,” including Alzheimer’s, he wrote.

Dr. Missling said this paper, and smaller studies appearing at Alzheimer’s meetings, prompted the company to add the stool sampling as a follow-up measure.

“It’s something of great interest, we think, and deserves to be investigated.”

[email protected]

SOURCE: Missling C et al. AAIC 2019, Abstract 32260.

LOS ANGELES – A single look at the gut microbiome of patients with Alzheimer’s disease (AD) suggests an interaction between anti-inflammatory gut bacteria and long-term exposure to an investigational sigma 1 receptor agonist.

After up to 148 weeks treatment with Anavex 2-73, patients with stable or improved functional scores showed significantly higher levels of both Ruminococcaceae and Porphyromonadaceae, compared with patients who had declining function. Both bacterial families produce butyrate, an anti-inflammatory short-chain fatty acid.

Conversely, poor response was associated with a low level of Verrucomicrobia, a mucin-degrading phylum thought to be important in gut homeostasis. These bacteria live mainly in the intestinal mucosa – the physical interface between the microbiome and the rest of the body.

The data, presented at the Alzheimer’s Association International Conference, represent the first microbiome measurements reported in a clinical trial of an investigational Alzheimer’s therapy. Because they come from a single sample taken from a small group in an extension study, without a baseline comparator, it’s impossible to know what these associations mean. But the findings are enough to nudge Anavex Life Sciences into adding microbiome changes to its new study of Anavex 2-73, according to Christopher Missling, PhD, president and chief executive officer of the company.

The study, ramping up now, aims to recruit 450 patients with mild AD. They will be randomized to high-dose or mid-dose Anavex 2-73 for 48 weeks. The primary outcomes are measures of cognition and function. Stool sampling at baseline and at the end of the study will be included as well, Dr. Missling said in an interview.

Anavex 2-73 is a sigma-1 receptor agonist. A chaperone protein, sigma-1 is activated in response to acute and chronic cellular stressors, several which are important in neurodegeneration. The sigma-1 receptor is found on neurons and glia in many areas of the central nervous system. It modulates several processes implicated in neurodegenerative diseases, including glutamate and calcium activity, reaction to oxidative stress, and mitochondrial function. There is some evidence that sigma-1 receptor activation can induce neuronal regrowth and functional recovery after stroke. It also appears to play a role in helping cells clear misfolded proteins – a pathway that makes it an attractive drug target in Alzheimer’s disease, as well as other neurodegenerative diseases with aberrant proteins, such as Parkinson’s and Huntington’s diseases.

Anavex 2-73’s phase 2 development started with a 5-week crossover trial of 32 patients. This was followed by a 52-week, open-label extension trial of 10, 20, 30, and 50 mg/day orally, in which each patient was titrated to the maximum tolerated dose. The main endpoints were change on the Mini Mental State Exam and change on the Alzheimer’s Disease Cooperative Study-activities of daily living (ADCS-ADL) scale.

At 57 weeks, six patients had improved on the Mini Mental State Exam score: four with high plasma levels and two with low plasma levels, correlating to the dosage obtained. On the functional measure of activities of daily living, nine patients had improved, including five with high plasma levels, three with moderate levels, and one with a low level. One patient, with a moderate level, remained stable. The remaining 14 patients declined.

The company then enrolled 21 of the cohort in a 208-week extension trial, primarily because of patient request, Dr. Missling said. “They know they are doing better. Their families know they’re doing better. They did not want to give this up.”

Last fall, the company released 148-week functional and cognitive data confirming the initial findings: Patients with higher plasma levels (correlating with higher doses) declined about 2 points on the ADCS-ADL scale, compared with a mean decline of about 25 points among those with lower blood levels – an 88% difference in favor of treatment. Cognition scores showed a similar pattern, with the high-concentration group declining 64% less than the low-concentration group.

Sixteen patients consented to stool sampling. A sophisticated computer algorithm characterized the microbiome of each, measuring the relative abundance of phyla. Microbiome analysis wasn’t included as an endpoint in the original study design because, at that time, the idea of a connection between AD and the gut microbiome was barely on the research radar.

Things shifted dramatically in 2017, with a seminal paper finding that germ-free mice inoculated with stool from Parkinson’s patients developed Parkinson’s symptoms. This study was widely heralded as a breakthrough in the field – the first time any neurodegenerative disease had been conclusively linked to dysregulations in the human microbiome.

Last year, Vo Van Giau, PhD, of Gachon University, South Korea, and his colleagues published an extensive review of the data suggesting a similar link with Alzheimer’s disease.

Dr. Giau and his coauthors laid out a potential pathogenic pathway for this interaction.

“The microbiota is closely related to neurological dysfunction and plays a significant role in neuroinflammation through the secretion of proinflammatory cytokines. Changes in the homeostatic state of the microbiota lead to increased intestinal permeability, which may promote the translocation of bacteria and endotoxins across the epithelial barrier, inducing an immunological response associated with the production of proinflammatory cytokines. The activation of both enteric neurons and glial cells may result in various neurological disorders,” including Alzheimer’s, he wrote.

Dr. Missling said this paper, and smaller studies appearing at Alzheimer’s meetings, prompted the company to add the stool sampling as a follow-up measure.

“It’s something of great interest, we think, and deserves to be investigated.”

[email protected]

SOURCE: Missling C et al. AAIC 2019, Abstract 32260.

LOS ANGELES – A single look at the gut microbiome of patients with Alzheimer’s disease (AD) suggests an interaction between anti-inflammatory gut bacteria and long-term exposure to an investigational sigma 1 receptor agonist.

After up to 148 weeks treatment with Anavex 2-73, patients with stable or improved functional scores showed significantly higher levels of both Ruminococcaceae and Porphyromonadaceae, compared with patients who had declining function. Both bacterial families produce butyrate, an anti-inflammatory short-chain fatty acid.

Conversely, poor response was associated with a low level of Verrucomicrobia, a mucin-degrading phylum thought to be important in gut homeostasis. These bacteria live mainly in the intestinal mucosa – the physical interface between the microbiome and the rest of the body.

The data, presented at the Alzheimer’s Association International Conference, represent the first microbiome measurements reported in a clinical trial of an investigational Alzheimer’s therapy. Because they come from a single sample taken from a small group in an extension study, without a baseline comparator, it’s impossible to know what these associations mean. But the findings are enough to nudge Anavex Life Sciences into adding microbiome changes to its new study of Anavex 2-73, according to Christopher Missling, PhD, president and chief executive officer of the company.

The study, ramping up now, aims to recruit 450 patients with mild AD. They will be randomized to high-dose or mid-dose Anavex 2-73 for 48 weeks. The primary outcomes are measures of cognition and function. Stool sampling at baseline and at the end of the study will be included as well, Dr. Missling said in an interview.

Anavex 2-73 is a sigma-1 receptor agonist. A chaperone protein, sigma-1 is activated in response to acute and chronic cellular stressors, several which are important in neurodegeneration. The sigma-1 receptor is found on neurons and glia in many areas of the central nervous system. It modulates several processes implicated in neurodegenerative diseases, including glutamate and calcium activity, reaction to oxidative stress, and mitochondrial function. There is some evidence that sigma-1 receptor activation can induce neuronal regrowth and functional recovery after stroke. It also appears to play a role in helping cells clear misfolded proteins – a pathway that makes it an attractive drug target in Alzheimer’s disease, as well as other neurodegenerative diseases with aberrant proteins, such as Parkinson’s and Huntington’s diseases.

Anavex 2-73’s phase 2 development started with a 5-week crossover trial of 32 patients. This was followed by a 52-week, open-label extension trial of 10, 20, 30, and 50 mg/day orally, in which each patient was titrated to the maximum tolerated dose. The main endpoints were change on the Mini Mental State Exam and change on the Alzheimer’s Disease Cooperative Study-activities of daily living (ADCS-ADL) scale.

At 57 weeks, six patients had improved on the Mini Mental State Exam score: four with high plasma levels and two with low plasma levels, correlating to the dosage obtained. On the functional measure of activities of daily living, nine patients had improved, including five with high plasma levels, three with moderate levels, and one with a low level. One patient, with a moderate level, remained stable. The remaining 14 patients declined.

The company then enrolled 21 of the cohort in a 208-week extension trial, primarily because of patient request, Dr. Missling said. “They know they are doing better. Their families know they’re doing better. They did not want to give this up.”

Last fall, the company released 148-week functional and cognitive data confirming the initial findings: Patients with higher plasma levels (correlating with higher doses) declined about 2 points on the ADCS-ADL scale, compared with a mean decline of about 25 points among those with lower blood levels – an 88% difference in favor of treatment. Cognition scores showed a similar pattern, with the high-concentration group declining 64% less than the low-concentration group.

Sixteen patients consented to stool sampling. A sophisticated computer algorithm characterized the microbiome of each, measuring the relative abundance of phyla. Microbiome analysis wasn’t included as an endpoint in the original study design because, at that time, the idea of a connection between AD and the gut microbiome was barely on the research radar.

Things shifted dramatically in 2017, with a seminal paper finding that germ-free mice inoculated with stool from Parkinson’s patients developed Parkinson’s symptoms. This study was widely heralded as a breakthrough in the field – the first time any neurodegenerative disease had been conclusively linked to dysregulations in the human microbiome.

Last year, Vo Van Giau, PhD, of Gachon University, South Korea, and his colleagues published an extensive review of the data suggesting a similar link with Alzheimer’s disease.

Dr. Giau and his coauthors laid out a potential pathogenic pathway for this interaction.

“The microbiota is closely related to neurological dysfunction and plays a significant role in neuroinflammation through the secretion of proinflammatory cytokines. Changes in the homeostatic state of the microbiota lead to increased intestinal permeability, which may promote the translocation of bacteria and endotoxins across the epithelial barrier, inducing an immunological response associated with the production of proinflammatory cytokines. The activation of both enteric neurons and glial cells may result in various neurological disorders,” including Alzheimer’s, he wrote.

Dr. Missling said this paper, and smaller studies appearing at Alzheimer’s meetings, prompted the company to add the stool sampling as a follow-up measure.

“It’s something of great interest, we think, and deserves to be investigated.”

[email protected]

SOURCE: Missling C et al. AAIC 2019, Abstract 32260.

Occult chronic obstructive pulmonary disease appears to impair right ventricular function for some time before a major cardiovascular event in patients with acute coronary syndromes, data from a clinical trial suggest.

The finding could represent an opportunity for early intervention, Rita Pavasini, MD, wrote in COPD: Journal of Chronic Obstructive Pulmonary Disease.

“Early change of the right ventricular function, as detected by reduced right ventricular strain and reduced fractional area change, is present in [these] patients,” wrote Dr. Pavasini of Azienda Ospedaliero-Universitaria di Ferrara, Cona, Italy. “Further studies are warranted to determine whether these alterations can be reversed or modulated by an early identification and treatment and whether targeting early right ventricular strain reduction results in better clinical outcomes in these comorbid patients.”

Dr. Pavasini and colleagues reported a prespecified subanalysis of the Screening for COPD in ACS Patients (SCAP) trial, which showed that screening patients admitted for acute coronary syndromes with respiratory measures could identify those at risk for undiagnosed COPD. The substudy examined the echocardiographic characteristics of these patients.

SCAP comprised 137 patients who were current or past smokers. At baseline, 29% had a COPD diagnosis. However, most displayed airflow limitation (59% mild, 38% moderate). All underwent transthoracic echocardiogram at baseline and at 6 months.

At baseline, fractional area change (FAC) was already significantly lower in patients with occult COPD than in those without it (38% vs. 44%). Patients with undiagnosed COPD also had significantly reduced right ventricular strain (RVS) (–15 vs. –20).

“Interestingly, the inferior location of myocardial infarction did not influence the results,” the authors said. “Indeed, RVS and FAC did not differ between patients with inferior location of myocardial infarction vs. those without inferior location.”

At 6 months, these differences were unabated. FAC was still significantly lower among those with COPD (37% vs. 46%), and RVS still significantly less (–16 vs. –20). Systolic pulmonary artery pressure (sPAP) was also significantly higher in patients with concomitant COPD (35 vs. 27 mm Hg).

“The early impairment in RVS might reflect the impact of endothelial dysfunction, increased arterial stiffness and inflammation on right heart function, rather than only hypoxia, and even more in a population with mainly mild to moderate COPD,” the team said. “Thus, it is highly probable that sPAP in patients with undiagnosed COPD is mainly determined by concomitant pulmonary disease, which did not differ between acute and chronic phase.”

On the whole, the data suggest that the impairment of right ventricular strain was primarily related to the undiagnosed COPD, and not the cardiovascular event, they said,

“These data are consistent with the observed impairment of RVS and indirectly confirms that undiagnosed COPD determines early changes in the structure and function of the right heart.”

Dr. Pavasini had no relevant financial disclosures.

[email protected]

SOURCE: Pavasini R et al. COPD 2019 Jul 21. doi: 10.1080/15412555.2019.16451059.

Occult chronic obstructive pulmonary disease appears to impair right ventricular function for some time before a major cardiovascular event in patients with acute coronary syndromes, data from a clinical trial suggest.

The finding could represent an opportunity for early intervention, Rita Pavasini, MD, wrote in COPD: Journal of Chronic Obstructive Pulmonary Disease.

“Early change of the right ventricular function, as detected by reduced right ventricular strain and reduced fractional area change, is present in [these] patients,” wrote Dr. Pavasini of Azienda Ospedaliero-Universitaria di Ferrara, Cona, Italy. “Further studies are warranted to determine whether these alterations can be reversed or modulated by an early identification and treatment and whether targeting early right ventricular strain reduction results in better clinical outcomes in these comorbid patients.”

Dr. Pavasini and colleagues reported a prespecified subanalysis of the Screening for COPD in ACS Patients (SCAP) trial, which showed that screening patients admitted for acute coronary syndromes with respiratory measures could identify those at risk for undiagnosed COPD. The substudy examined the echocardiographic characteristics of these patients.

SCAP comprised 137 patients who were current or past smokers. At baseline, 29% had a COPD diagnosis. However, most displayed airflow limitation (59% mild, 38% moderate). All underwent transthoracic echocardiogram at baseline and at 6 months.

At baseline, fractional area change (FAC) was already significantly lower in patients with occult COPD than in those without it (38% vs. 44%). Patients with undiagnosed COPD also had significantly reduced right ventricular strain (RVS) (–15 vs. –20).

“Interestingly, the inferior location of myocardial infarction did not influence the results,” the authors said. “Indeed, RVS and FAC did not differ between patients with inferior location of myocardial infarction vs. those without inferior location.”

At 6 months, these differences were unabated. FAC was still significantly lower among those with COPD (37% vs. 46%), and RVS still significantly less (–16 vs. –20). Systolic pulmonary artery pressure (sPAP) was also significantly higher in patients with concomitant COPD (35 vs. 27 mm Hg).

“The early impairment in RVS might reflect the impact of endothelial dysfunction, increased arterial stiffness and inflammation on right heart function, rather than only hypoxia, and even more in a population with mainly mild to moderate COPD,” the team said. “Thus, it is highly probable that sPAP in patients with undiagnosed COPD is mainly determined by concomitant pulmonary disease, which did not differ between acute and chronic phase.”

On the whole, the data suggest that the impairment of right ventricular strain was primarily related to the undiagnosed COPD, and not the cardiovascular event, they said,

“These data are consistent with the observed impairment of RVS and indirectly confirms that undiagnosed COPD determines early changes in the structure and function of the right heart.”

Dr. Pavasini had no relevant financial disclosures.

[email protected]

SOURCE: Pavasini R et al. COPD 2019 Jul 21. doi: 10.1080/15412555.2019.16451059.

Occult chronic obstructive pulmonary disease appears to impair right ventricular function for some time before a major cardiovascular event in patients with acute coronary syndromes, data from a clinical trial suggest.

The finding could represent an opportunity for early intervention, Rita Pavasini, MD, wrote in COPD: Journal of Chronic Obstructive Pulmonary Disease.

“Early change of the right ventricular function, as detected by reduced right ventricular strain and reduced fractional area change, is present in [these] patients,” wrote Dr. Pavasini of Azienda Ospedaliero-Universitaria di Ferrara, Cona, Italy. “Further studies are warranted to determine whether these alterations can be reversed or modulated by an early identification and treatment and whether targeting early right ventricular strain reduction results in better clinical outcomes in these comorbid patients.”

Dr. Pavasini and colleagues reported a prespecified subanalysis of the Screening for COPD in ACS Patients (SCAP) trial, which showed that screening patients admitted for acute coronary syndromes with respiratory measures could identify those at risk for undiagnosed COPD. The substudy examined the echocardiographic characteristics of these patients.

SCAP comprised 137 patients who were current or past smokers. At baseline, 29% had a COPD diagnosis. However, most displayed airflow limitation (59% mild, 38% moderate). All underwent transthoracic echocardiogram at baseline and at 6 months.

At baseline, fractional area change (FAC) was already significantly lower in patients with occult COPD than in those without it (38% vs. 44%). Patients with undiagnosed COPD also had significantly reduced right ventricular strain (RVS) (–15 vs. –20).

“Interestingly, the inferior location of myocardial infarction did not influence the results,” the authors said. “Indeed, RVS and FAC did not differ between patients with inferior location of myocardial infarction vs. those without inferior location.”

At 6 months, these differences were unabated. FAC was still significantly lower among those with COPD (37% vs. 46%), and RVS still significantly less (–16 vs. –20). Systolic pulmonary artery pressure (sPAP) was also significantly higher in patients with concomitant COPD (35 vs. 27 mm Hg).

“The early impairment in RVS might reflect the impact of endothelial dysfunction, increased arterial stiffness and inflammation on right heart function, rather than only hypoxia, and even more in a population with mainly mild to moderate COPD,” the team said. “Thus, it is highly probable that sPAP in patients with undiagnosed COPD is mainly determined by concomitant pulmonary disease, which did not differ between acute and chronic phase.”

On the whole, the data suggest that the impairment of right ventricular strain was primarily related to the undiagnosed COPD, and not the cardiovascular event, they said,

“These data are consistent with the observed impairment of RVS and indirectly confirms that undiagnosed COPD determines early changes in the structure and function of the right heart.”

Dr. Pavasini had no relevant financial disclosures.

[email protected]

SOURCE: Pavasini R et al. COPD 2019 Jul 21. doi: 10.1080/15412555.2019.16451059.

LOS ANGELES – Benzodiazepines and hypnotics, including the so-called “Z drugs,” don’t significantly increase the pathological features typical of Alzheimer’s disease but long-term users may experience some neuronal loss in the nucleus basalis, Chris Fox, MD, reported at the Alzheimer’s Association International Conference.

Michele G. Sullivan/MDedge News

The nucleus basalis is rich in cholinergic neurons and associated with arousing stimuli, including positive and aversive appetite, sustained attention, and the interplay of reality and visual perception.

“Neuronal loss in the nucleus basalis offers mechanisms for the impact of benzodiazepine and anticholinergic drug use on the aging brain and highlights important areas for future research,” said Dr. Fox, professor of clinical psychiatry at the University of East Anglia, Norwich, England.

“The risk [for taking a Z drug] in the United Kingdom is high, with about 7.5 million older adults using potentially inappropriately prescribed anticholinergic and/or Z-drug medications. Despite well-documented cognitive impairment associated with these medicines, hypnotics are still used for long durations and exceed the recommended limits,” Dr. Fox said. “There’s no association with better cognition, quality of life, or improved behavior when they are given to people with dementia. In fact, we’ve seen a 60% increased risk of hip fractures – an increase from a 3% to a 15% yearly risk.”

Dr. Fox and colleagues studied the brains of 337 subjects who were included in the U.K. Medical Research Council’s Cognitive Function and Ageing Studies (CFAS). The study was intended to explore the incidence of dementia in the United Kingdom, examine incidence variation among regions, and explore factors increasing dementia risk and rate of progression.

The first study, which began in 1989 and lasted until 2015, followed subjects older than 65 years for up to 12 years. Each subject was regularly interviewed and underwent cognitive testing about every 1.5 years. Benzodiazepine use was considered an especially important aspect, because the medications are frequently used in the elderly and seem linked to injuries and cognitive status at last follow-up.

In CFAS, 21% of subjects reported at least one incidence of anticholinergic use, and 12% reported recurrent use. Another 17% reported any hypnotic use, and 11% reported recurrent use. The main indications were as an antidepressant (13%), for urological issues (4%), as antiparkinsonism drugs (1%), as antipsychotics (3%), and as antihistamines (3%). Overall, 18% reported concurrent use of benzodiazepines and hypnotics. At time of death, 46% had a diagnosis of dementia.

“Those reporting benzodiazepine use were more likely to be women and to have depression or sleep problems,” Dr. Fox noted, although he didn’t give specific hazard ratios. After adjustment for numerous factors, including age, sex, stroke, hypertension, depression, anxiety, asthma, Parkinson’s disease, duration of sleep problems, education, and smoking, he found no statistically increased risk of amyloid brain plaques or tau tangles, the pathologic hallmarks of Alzheimer’s disease.

Anticholinergic use was associated with a significant 60% reduction in cortical atrophy (odds ratio, 0.40) and recurrent use with a 61% reduction in amyloid angiopathy (OR, 0.39).

However, both medication classes were associated with greater neuronal loss in the nucleus basalis. Recurrent use of anticholinergic drugs increased neuronal loss by 300% (OR, 4.12), while any use nearly tripled it (OR, 2.87). Recurrent use of benzodiazepines was associated with increased neuronal loss in the region (OR, 3.76) as well. However, these associations did not reach statistical significance. But there was a statistically significant association with any use of benzodiazepines and neuronal loss in the nucleus basalis (OR, 6.84).

“We did find greater neuronal loss in the nucleus basalis associated with benzodiazepine and anticholinergic drugs use,” Dr. Fox said. “The nucleus basalis is rich in neurons that stimulate the cholinergic system of the neocortex. Neuronal loss in this region is thought to occur in the early stages of Alzheimer’s. Other studies have suggested that volume loss in the basal forebrain cholinergic site leads to widespread cortical atrophy in patients with mild cognitive impairment. We did not observe the widespread cortical atrophy, however.

“Given that the strongest associations were observed for benzodiazepines and neuronal loss in the nucleus basalis, it may be that the drugs were prescribed to treat the symptoms of ‘cholinergic deficiency syndrome,’ Our findings suggest that the symptoms of dementia lead to an increase of benzodiazepines as opposed to the medications actually causing Alzheimer’s disease,” he said.

Dr. Fox reported no financial disclosures.

[email protected]

SOURCE: Fox C et al. AAIC 2019, Abstract 34017.

LOS ANGELES – Benzodiazepines and hypnotics, including the so-called “Z drugs,” don’t significantly increase the pathological features typical of Alzheimer’s disease but long-term users may experience some neuronal loss in the nucleus basalis, Chris Fox, MD, reported at the Alzheimer’s Association International Conference.

Michele G. Sullivan/MDedge News

The nucleus basalis is rich in cholinergic neurons and associated with arousing stimuli, including positive and aversive appetite, sustained attention, and the interplay of reality and visual perception.

“Neuronal loss in the nucleus basalis offers mechanisms for the impact of benzodiazepine and anticholinergic drug use on the aging brain and highlights important areas for future research,” said Dr. Fox, professor of clinical psychiatry at the University of East Anglia, Norwich, England.

“The risk [for taking a Z drug] in the United Kingdom is high, with about 7.5 million older adults using potentially inappropriately prescribed anticholinergic and/or Z-drug medications. Despite well-documented cognitive impairment associated with these medicines, hypnotics are still used for long durations and exceed the recommended limits,” Dr. Fox said. “There’s no association with better cognition, quality of life, or improved behavior when they are given to people with dementia. In fact, we’ve seen a 60% increased risk of hip fractures – an increase from a 3% to a 15% yearly risk.”

Dr. Fox and colleagues studied the brains of 337 subjects who were included in the U.K. Medical Research Council’s Cognitive Function and Ageing Studies (CFAS). The study was intended to explore the incidence of dementia in the United Kingdom, examine incidence variation among regions, and explore factors increasing dementia risk and rate of progression.

The first study, which began in 1989 and lasted until 2015, followed subjects older than 65 years for up to 12 years. Each subject was regularly interviewed and underwent cognitive testing about every 1.5 years. Benzodiazepine use was considered an especially important aspect, because the medications are frequently used in the elderly and seem linked to injuries and cognitive status at last follow-up.

In CFAS, 21% of subjects reported at least one incidence of anticholinergic use, and 12% reported recurrent use. Another 17% reported any hypnotic use, and 11% reported recurrent use. The main indications were as an antidepressant (13%), for urological issues (4%), as antiparkinsonism drugs (1%), as antipsychotics (3%), and as antihistamines (3%). Overall, 18% reported concurrent use of benzodiazepines and hypnotics. At time of death, 46% had a diagnosis of dementia.

“Those reporting benzodiazepine use were more likely to be women and to have depression or sleep problems,” Dr. Fox noted, although he didn’t give specific hazard ratios. After adjustment for numerous factors, including age, sex, stroke, hypertension, depression, anxiety, asthma, Parkinson’s disease, duration of sleep problems, education, and smoking, he found no statistically increased risk of amyloid brain plaques or tau tangles, the pathologic hallmarks of Alzheimer’s disease.

Anticholinergic use was associated with a significant 60% reduction in cortical atrophy (odds ratio, 0.40) and recurrent use with a 61% reduction in amyloid angiopathy (OR, 0.39).

However, both medication classes were associated with greater neuronal loss in the nucleus basalis. Recurrent use of anticholinergic drugs increased neuronal loss by 300% (OR, 4.12), while any use nearly tripled it (OR, 2.87). Recurrent use of benzodiazepines was associated with increased neuronal loss in the region (OR, 3.76) as well. However, these associations did not reach statistical significance. But there was a statistically significant association with any use of benzodiazepines and neuronal loss in the nucleus basalis (OR, 6.84).

“We did find greater neuronal loss in the nucleus basalis associated with benzodiazepine and anticholinergic drugs use,” Dr. Fox said. “The nucleus basalis is rich in neurons that stimulate the cholinergic system of the neocortex. Neuronal loss in this region is thought to occur in the early stages of Alzheimer’s. Other studies have suggested that volume loss in the basal forebrain cholinergic site leads to widespread cortical atrophy in patients with mild cognitive impairment. We did not observe the widespread cortical atrophy, however.

“Given that the strongest associations were observed for benzodiazepines and neuronal loss in the nucleus basalis, it may be that the drugs were prescribed to treat the symptoms of ‘cholinergic deficiency syndrome,’ Our findings suggest that the symptoms of dementia lead to an increase of benzodiazepines as opposed to the medications actually causing Alzheimer’s disease,” he said.

Dr. Fox reported no financial disclosures.

[email protected]

SOURCE: Fox C et al. AAIC 2019, Abstract 34017.

LOS ANGELES – Benzodiazepines and hypnotics, including the so-called “Z drugs,” don’t significantly increase the pathological features typical of Alzheimer’s disease but long-term users may experience some neuronal loss in the nucleus basalis, Chris Fox, MD, reported at the Alzheimer’s Association International Conference.

Michele G. Sullivan/MDedge News

The nucleus basalis is rich in cholinergic neurons and associated with arousing stimuli, including positive and aversive appetite, sustained attention, and the interplay of reality and visual perception.

“Neuronal loss in the nucleus basalis offers mechanisms for the impact of benzodiazepine and anticholinergic drug use on the aging brain and highlights important areas for future research,” said Dr. Fox, professor of clinical psychiatry at the University of East Anglia, Norwich, England.

“The risk [for taking a Z drug] in the United Kingdom is high, with about 7.5 million older adults using potentially inappropriately prescribed anticholinergic and/or Z-drug medications. Despite well-documented cognitive impairment associated with these medicines, hypnotics are still used for long durations and exceed the recommended limits,” Dr. Fox said. “There’s no association with better cognition, quality of life, or improved behavior when they are given to people with dementia. In fact, we’ve seen a 60% increased risk of hip fractures – an increase from a 3% to a 15% yearly risk.”

Dr. Fox and colleagues studied the brains of 337 subjects who were included in the U.K. Medical Research Council’s Cognitive Function and Ageing Studies (CFAS). The study was intended to explore the incidence of dementia in the United Kingdom, examine incidence variation among regions, and explore factors increasing dementia risk and rate of progression.

The first study, which began in 1989 and lasted until 2015, followed subjects older than 65 years for up to 12 years. Each subject was regularly interviewed and underwent cognitive testing about every 1.5 years. Benzodiazepine use was considered an especially important aspect, because the medications are frequently used in the elderly and seem linked to injuries and cognitive status at last follow-up.

In CFAS, 21% of subjects reported at least one incidence of anticholinergic use, and 12% reported recurrent use. Another 17% reported any hypnotic use, and 11% reported recurrent use. The main indications were as an antidepressant (13%), for urological issues (4%), as antiparkinsonism drugs (1%), as antipsychotics (3%), and as antihistamines (3%). Overall, 18% reported concurrent use of benzodiazepines and hypnotics. At time of death, 46% had a diagnosis of dementia.

“Those reporting benzodiazepine use were more likely to be women and to have depression or sleep problems,” Dr. Fox noted, although he didn’t give specific hazard ratios. After adjustment for numerous factors, including age, sex, stroke, hypertension, depression, anxiety, asthma, Parkinson’s disease, duration of sleep problems, education, and smoking, he found no statistically increased risk of amyloid brain plaques or tau tangles, the pathologic hallmarks of Alzheimer’s disease.

Anticholinergic use was associated with a significant 60% reduction in cortical atrophy (odds ratio, 0.40) and recurrent use with a 61% reduction in amyloid angiopathy (OR, 0.39).

However, both medication classes were associated with greater neuronal loss in the nucleus basalis. Recurrent use of anticholinergic drugs increased neuronal loss by 300% (OR, 4.12), while any use nearly tripled it (OR, 2.87). Recurrent use of benzodiazepines was associated with increased neuronal loss in the region (OR, 3.76) as well. However, these associations did not reach statistical significance. But there was a statistically significant association with any use of benzodiazepines and neuronal loss in the nucleus basalis (OR, 6.84).

“We did find greater neuronal loss in the nucleus basalis associated with benzodiazepine and anticholinergic drugs use,” Dr. Fox said. “The nucleus basalis is rich in neurons that stimulate the cholinergic system of the neocortex. Neuronal loss in this region is thought to occur in the early stages of Alzheimer’s. Other studies have suggested that volume loss in the basal forebrain cholinergic site leads to widespread cortical atrophy in patients with mild cognitive impairment. We did not observe the widespread cortical atrophy, however.

“Given that the strongest associations were observed for benzodiazepines and neuronal loss in the nucleus basalis, it may be that the drugs were prescribed to treat the symptoms of ‘cholinergic deficiency syndrome,’ Our findings suggest that the symptoms of dementia lead to an increase of benzodiazepines as opposed to the medications actually causing Alzheimer’s disease,” he said.

Dr. Fox reported no financial disclosures.

[email protected]

SOURCE: Fox C et al. AAIC 2019, Abstract 34017.

Researchers at the University of Alabama at Birmingham will lead a 5-year, federally-funded study of acute flaccid myelitis (AFM) – a rare pediatric neurologic disease.

CDC

The National Institute of Allergy and Infectious Diseases (NIAID) awarded the $10 million grant to primary investigator David Kimberlin, MD, a UAB professor of pediatrics. Carlos Pardo-Villamizar, MD, professor of neurology and pathology at Johns Hopkins University, Baltimore, is the co-principal investigator.

The university will organize and implement the international, multisite study. Its primary goal is to examine the incidence and distribution of AFM, and its pathogenesis and progression. Enrollment is expected to commence next fall. Investigators will enroll children with symptoms of AFM and follow them for 1 year. Household contacts of the subjects will serve as comparators.

In addition to collecting data about risk factors and disease progression, the researchers will collect clinical specimens, including blood and cerebrospinal fluid. More details about the design and study sites will be released then, according to a press statement issued by NIAID.

AFM targets spinal nerves and often develops after a mild respiratory illness. The disease mounted a global epidemic comeback in 2014, primarily affecting children; it has occurred concurrently with enterovirus outbreaks.

“Growing epidemiological evidence suggests that enterovirus-D68 [EV-D68] could play a role,” the statement noted. “Most people who become infected with EV-D68 are asymptomatic or experience mild, cold-like symptoms. Researchers and physicians are working to understand if there is a connection between these viral outbreaks and AFM, and if so, why some children but not others experience this sudden muscle weakness and paralysis.”

The study will draw on the expertise of the AFM Task Force, established last fall. The group comprises physicians, scientists, and public health experts from diverse disciplines and institutions who will assist in the ongoing investigation.

The AFM natural history study is funded under contract HHSN272201600018C.

[email protected]

Researchers at the University of Alabama at Birmingham will lead a 5-year, federally-funded study of acute flaccid myelitis (AFM) – a rare pediatric neurologic disease.

CDC

The National Institute of Allergy and Infectious Diseases (NIAID) awarded the $10 million grant to primary investigator David Kimberlin, MD, a UAB professor of pediatrics. Carlos Pardo-Villamizar, MD, professor of neurology and pathology at Johns Hopkins University, Baltimore, is the co-principal investigator.

The university will organize and implement the international, multisite study. Its primary goal is to examine the incidence and distribution of AFM, and its pathogenesis and progression. Enrollment is expected to commence next fall. Investigators will enroll children with symptoms of AFM and follow them for 1 year. Household contacts of the subjects will serve as comparators.

In addition to collecting data about risk factors and disease progression, the researchers will collect clinical specimens, including blood and cerebrospinal fluid. More details about the design and study sites will be released then, according to a press statement issued by NIAID.

AFM targets spinal nerves and often develops after a mild respiratory illness. The disease mounted a global epidemic comeback in 2014, primarily affecting children; it has occurred concurrently with enterovirus outbreaks.

“Growing epidemiological evidence suggests that enterovirus-D68 [EV-D68] could play a role,” the statement noted. “Most people who become infected with EV-D68 are asymptomatic or experience mild, cold-like symptoms. Researchers and physicians are working to understand if there is a connection between these viral outbreaks and AFM, and if so, why some children but not others experience this sudden muscle weakness and paralysis.”

The study will draw on the expertise of the AFM Task Force, established last fall. The group comprises physicians, scientists, and public health experts from diverse disciplines and institutions who will assist in the ongoing investigation.

The AFM natural history study is funded under contract HHSN272201600018C.

[email protected]

Researchers at the University of Alabama at Birmingham will lead a 5-year, federally-funded study of acute flaccid myelitis (AFM) – a rare pediatric neurologic disease.

CDC

The National Institute of Allergy and Infectious Diseases (NIAID) awarded the $10 million grant to primary investigator David Kimberlin, MD, a UAB professor of pediatrics. Carlos Pardo-Villamizar, MD, professor of neurology and pathology at Johns Hopkins University, Baltimore, is the co-principal investigator.

The university will organize and implement the international, multisite study. Its primary goal is to examine the incidence and distribution of AFM, and its pathogenesis and progression. Enrollment is expected to commence next fall. Investigators will enroll children with symptoms of AFM and follow them for 1 year. Household contacts of the subjects will serve as comparators.

In addition to collecting data about risk factors and disease progression, the researchers will collect clinical specimens, including blood and cerebrospinal fluid. More details about the design and study sites will be released then, according to a press statement issued by NIAID.

AFM targets spinal nerves and often develops after a mild respiratory illness. The disease mounted a global epidemic comeback in 2014, primarily affecting children; it has occurred concurrently with enterovirus outbreaks.

“Growing epidemiological evidence suggests that enterovirus-D68 [EV-D68] could play a role,” the statement noted. “Most people who become infected with EV-D68 are asymptomatic or experience mild, cold-like symptoms. Researchers and physicians are working to understand if there is a connection between these viral outbreaks and AFM, and if so, why some children but not others experience this sudden muscle weakness and paralysis.”

The study will draw on the expertise of the AFM Task Force, established last fall. The group comprises physicians, scientists, and public health experts from diverse disciplines and institutions who will assist in the ongoing investigation.

The AFM natural history study is funded under contract HHSN272201600018C.

[email protected]

LOS ANGELES – Estrogen therapy may have scored another goal in its comeback game, as a 7-year prospective study shows that a transdermal formulation preserves some measures of cognitive function and brain architecture in postmenopausal women.

JackF/thinkstockphotos.com

In addition to performing better on subjective tests of memory, women using the estrogen patch experienced less cortical atrophy and were less likely to show amyloid on brain imaging. The observations were moderately associated with the improved sleep these women reported, Burcu Zeydan, MD, said at the Alzheimer’s Association International Conference.

“By 7 years, among the cognitive domains studied ... [less brain and cognitive change] correlated with lower global sleep score, meaning better sleep quality in the estradiol group,” said Dr. Zeydan, assistant professor of radiology at the Mayo Clinic in Rochester, Minn. “We previously found that preservation of dorsolateral prefrontal cortex over 7 years was associated with lower cortical beta-amyloid deposition on PET only in the estradiol group, pointing out the potential role of estrogen receptors in modulating this relationship.”

Dysregulated sleep is more common among women than men, particularly as menopause approaches and estrogen levels fluctuate, then decline, Dr. Zeydan said.

Dr. Zeydan reported the sleep substudy of KEEPS (the Kronos Early Estrogen Prevention Study), a randomized, double-blind, placebo-controlled, multisite trial that compared oral conjugated equine estrogen with transdermal estradiol. A control group received oral placebo and a placebo patch.*

Brain architecture was similar between the placebo and transdermal groups, but it was actually worse in some measures in the oral-estrogen group, compared with the placebo group. Women taking oral estrogen had more white matter hyperintensities, greater ventricle enlargement, and more cortical thinning. Those differences resolved after they stopped taking the oral formulation, bringing them into line with the transdermal and placebo groups.

The investigation also found that the transdermal group showed lower cerebral amyloid binding on PET scans relative to both placebo and oral estrogen.

“The relative preservation of dorsolateral prefrontal cortical volume in the [transdermal estradiol] group over 7 years indicates that hormone therapy may have long-term effects on the brain,” the team concluded. They noted that the original KEEPS study didn’t find any cognitive correlation with these changes.

The subanalysis looked at 69 women of the KEEPS cohort who had been followed for the full 7 years (4 years on treatment and 3 years off treatment). They were randomized to oral placebo and a placebo patch,* oral conjugated equine estrogen (0.45 mg/day), or transdermal estradiol (50 mcg/day). Participants in the active treatment groups received oral micronized progesterone 12 days each month. All had complete data on cognitive testing and brain imaging. Sleep quality was measured by the Pittsburgh Sleep Quality Index. Dr. Zeydan compared cognition and brain architecture findings in relation to the sleep score; lower scores mean better sleep.

The women were aged 42-58 years at baseline, and within 36 months from menopause. They had no history of menopausal hormone therapy or cardiovascular disease.

The investigators were particularly interested in how estrogen might have modulated the disturbed sleep patterns that often accompany perimenopause and early menopause, and whether the observed brain and cognitive changes tracked with sleep quality.

“During this time, 40% to 60% of women report problems sleeping, and estrogen decline seems to play an important role in sleep disturbances during this phase,” Dr. Zeydan said. “Although poor sleep quality is common in recently menopausal women, sleep quality improves with hormone therapy, as was previously demonstrated in KEEPS hormone therapy trial in recently menopausal women.”

By year 7, the cohort’s mean age was 61 years. The majority had at least some college education. The percentage who carried an apolipoprotein E epsilon-4 allele varied by group, with 15% positivity in the oral group, 48% in the transdermal group, and 16% in the placebo group.


Cognitive function was estimated with a global cognitive measure and four cognitive domain scores: verbal learning and memory, auditory attention and working memory, visual attention and executive function, and mental flexibility.

Higher attention and executive function scores were moderately correlated with a lower sleep score in the transdermal group (r = –0.54, a significant difference compared with the oral formulation). Lower sleep scores also showed a moderate correlation with preserved cortical volume of the dorsolateral prefrontal region (r = –0.47, also significantly different from the oral group).

Lower brain amyloid also positively correlated with better sleep. The correlation between sleep and global amyloid burden in the transdermal group was also moderate (r = 0.45), while the correlation in the oral group was significantly weaker (r = 0.18).

“We can say that sleep quality and transdermal estradiol during early postmenopausal years somehow interact to influence beta-amyloid deposition, preservation of dorsolateral prefrontal cortex volume, and attention and executive function,” Dr. Zeydan said.

Dr. Zeydan had no financial disclosures.

[email protected]

*Correction, 8/7/2019: An earlier version of this story did not make clear that participants in the control group received oral placebo and a placebo patch.

LOS ANGELES – Estrogen therapy may have scored another goal in its comeback game, as a 7-year prospective study shows that a transdermal formulation preserves some measures of cognitive function and brain architecture in postmenopausal women.

JackF/thinkstockphotos.com

In addition to performing better on subjective tests of memory, women using the estrogen patch experienced less cortical atrophy and were less likely to show amyloid on brain imaging. The observations were moderately associated with the improved sleep these women reported, Burcu Zeydan, MD, said at the Alzheimer’s Association International Conference.

“By 7 years, among the cognitive domains studied ... [less brain and cognitive change] correlated with lower global sleep score, meaning better sleep quality in the estradiol group,” said Dr. Zeydan, assistant professor of radiology at the Mayo Clinic in Rochester, Minn. “We previously found that preservation of dorsolateral prefrontal cortex over 7 years was associated with lower cortical beta-amyloid deposition on PET only in the estradiol group, pointing out the potential role of estrogen receptors in modulating this relationship.”

Dysregulated sleep is more common among women than men, particularly as menopause approaches and estrogen levels fluctuate, then decline, Dr. Zeydan said.

Dr. Zeydan reported the sleep substudy of KEEPS (the Kronos Early Estrogen Prevention Study), a randomized, double-blind, placebo-controlled, multisite trial that compared oral conjugated equine estrogen with transdermal estradiol. A control group received oral placebo and a placebo patch.*

Brain architecture was similar between the placebo and transdermal groups, but it was actually worse in some measures in the oral-estrogen group, compared with the placebo group. Women taking oral estrogen had more white matter hyperintensities, greater ventricle enlargement, and more cortical thinning. Those differences resolved after they stopped taking the oral formulation, bringing them into line with the transdermal and placebo groups.

The investigation also found that the transdermal group showed lower cerebral amyloid binding on PET scans relative to both placebo and oral estrogen.

“The relative preservation of dorsolateral prefrontal cortical volume in the [transdermal estradiol] group over 7 years indicates that hormone therapy may have long-term effects on the brain,” the team concluded. They noted that the original KEEPS study didn’t find any cognitive correlation with these changes.

The subanalysis looked at 69 women of the KEEPS cohort who had been followed for the full 7 years (4 years on treatment and 3 years off treatment). They were randomized to oral placebo and a placebo patch,* oral conjugated equine estrogen (0.45 mg/day), or transdermal estradiol (50 mcg/day). Participants in the active treatment groups received oral micronized progesterone 12 days each month. All had complete data on cognitive testing and brain imaging. Sleep quality was measured by the Pittsburgh Sleep Quality Index. Dr. Zeydan compared cognition and brain architecture findings in relation to the sleep score; lower scores mean better sleep.

The women were aged 42-58 years at baseline, and within 36 months from menopause. They had no history of menopausal hormone therapy or cardiovascular disease.

The investigators were particularly interested in how estrogen might have modulated the disturbed sleep patterns that often accompany perimenopause and early menopause, and whether the observed brain and cognitive changes tracked with sleep quality.

“During this time, 40% to 60% of women report problems sleeping, and estrogen decline seems to play an important role in sleep disturbances during this phase,” Dr. Zeydan said. “Although poor sleep quality is common in recently menopausal women, sleep quality improves with hormone therapy, as was previously demonstrated in KEEPS hormone therapy trial in recently menopausal women.”

By year 7, the cohort’s mean age was 61 years. The majority had at least some college education. The percentage who carried an apolipoprotein E epsilon-4 allele varied by group, with 15% positivity in the oral group, 48% in the transdermal group, and 16% in the placebo group.


Cognitive function was estimated with a global cognitive measure and four cognitive domain scores: verbal learning and memory, auditory attention and working memory, visual attention and executive function, and mental flexibility.

Higher attention and executive function scores were moderately correlated with a lower sleep score in the transdermal group (r = –0.54, a significant difference compared with the oral formulation). Lower sleep scores also showed a moderate correlation with preserved cortical volume of the dorsolateral prefrontal region (r = –0.47, also significantly different from the oral group).

Lower brain amyloid also positively correlated with better sleep. The correlation between sleep and global amyloid burden in the transdermal group was also moderate (r = 0.45), while the correlation in the oral group was significantly weaker (r = 0.18).

“We can say that sleep quality and transdermal estradiol during early postmenopausal years somehow interact to influence beta-amyloid deposition, preservation of dorsolateral prefrontal cortex volume, and attention and executive function,” Dr. Zeydan said.

Dr. Zeydan had no financial disclosures.

[email protected]

*Correction, 8/7/2019: An earlier version of this story did not make clear that participants in the control group received oral placebo and a placebo patch.

LOS ANGELES – Estrogen therapy may have scored another goal in its comeback game, as a 7-year prospective study shows that a transdermal formulation preserves some measures of cognitive function and brain architecture in postmenopausal women.

JackF/thinkstockphotos.com

In addition to performing better on subjective tests of memory, women using the estrogen patch experienced less cortical atrophy and were less likely to show amyloid on brain imaging. The observations were moderately associated with the improved sleep these women reported, Burcu Zeydan, MD, said at the Alzheimer’s Association International Conference.

“By 7 years, among the cognitive domains studied ... [less brain and cognitive change] correlated with lower global sleep score, meaning better sleep quality in the estradiol group,” said Dr. Zeydan, assistant professor of radiology at the Mayo Clinic in Rochester, Minn. “We previously found that preservation of dorsolateral prefrontal cortex over 7 years was associated with lower cortical beta-amyloid deposition on PET only in the estradiol group, pointing out the potential role of estrogen receptors in modulating this relationship.”

Dysregulated sleep is more common among women than men, particularly as menopause approaches and estrogen levels fluctuate, then decline, Dr. Zeydan said.

Dr. Zeydan reported the sleep substudy of KEEPS (the Kronos Early Estrogen Prevention Study), a randomized, double-blind, placebo-controlled, multisite trial that compared oral conjugated equine estrogen with transdermal estradiol. A control group received oral placebo and a placebo patch.*

Brain architecture was similar between the placebo and transdermal groups, but it was actually worse in some measures in the oral-estrogen group, compared with the placebo group. Women taking oral estrogen had more white matter hyperintensities, greater ventricle enlargement, and more cortical thinning. Those differences resolved after they stopped taking the oral formulation, bringing them into line with the transdermal and placebo groups.

The investigation also found that the transdermal group showed lower cerebral amyloid binding on PET scans relative to both placebo and oral estrogen.

“The relative preservation of dorsolateral prefrontal cortical volume in the [transdermal estradiol] group over 7 years indicates that hormone therapy may have long-term effects on the brain,” the team concluded. They noted that the original KEEPS study didn’t find any cognitive correlation with these changes.

The subanalysis looked at 69 women of the KEEPS cohort who had been followed for the full 7 years (4 years on treatment and 3 years off treatment). They were randomized to oral placebo and a placebo patch,* oral conjugated equine estrogen (0.45 mg/day), or transdermal estradiol (50 mcg/day). Participants in the active treatment groups received oral micronized progesterone 12 days each month. All had complete data on cognitive testing and brain imaging. Sleep quality was measured by the Pittsburgh Sleep Quality Index. Dr. Zeydan compared cognition and brain architecture findings in relation to the sleep score; lower scores mean better sleep.

The women were aged 42-58 years at baseline, and within 36 months from menopause. They had no history of menopausal hormone therapy or cardiovascular disease.

The investigators were particularly interested in how estrogen might have modulated the disturbed sleep patterns that often accompany perimenopause and early menopause, and whether the observed brain and cognitive changes tracked with sleep quality.

“During this time, 40% to 60% of women report problems sleeping, and estrogen decline seems to play an important role in sleep disturbances during this phase,” Dr. Zeydan said. “Although poor sleep quality is common in recently menopausal women, sleep quality improves with hormone therapy, as was previously demonstrated in KEEPS hormone therapy trial in recently menopausal women.”

By year 7, the cohort’s mean age was 61 years. The majority had at least some college education. The percentage who carried an apolipoprotein E epsilon-4 allele varied by group, with 15% positivity in the oral group, 48% in the transdermal group, and 16% in the placebo group.


Cognitive function was estimated with a global cognitive measure and four cognitive domain scores: verbal learning and memory, auditory attention and working memory, visual attention and executive function, and mental flexibility.

Higher attention and executive function scores were moderately correlated with a lower sleep score in the transdermal group (r = –0.54, a significant difference compared with the oral formulation). Lower sleep scores also showed a moderate correlation with preserved cortical volume of the dorsolateral prefrontal region (r = –0.47, also significantly different from the oral group).

Lower brain amyloid also positively correlated with better sleep. The correlation between sleep and global amyloid burden in the transdermal group was also moderate (r = 0.45), while the correlation in the oral group was significantly weaker (r = 0.18).

“We can say that sleep quality and transdermal estradiol during early postmenopausal years somehow interact to influence beta-amyloid deposition, preservation of dorsolateral prefrontal cortex volume, and attention and executive function,” Dr. Zeydan said.

Dr. Zeydan had no financial disclosures.

[email protected]

*Correction, 8/7/2019: An earlier version of this story did not make clear that participants in the control group received oral placebo and a placebo patch.

LOS ANGELES – Dysregulated sleep-wake cycles may be linked to cerebral glucose hypometabolism and subtle cognitive changes, both of which are early signs of Alzheimer’s disease–like neurodegeneration, according to a 2-year study of older Korean adults.

Michele G. Sullivan/MDedge News

The association was particularly strong in subjects who experienced delayed acrophase, the peak of the normal sleep-wake cycle, So-Yeon Jeon, MD, said at the Alzheimer’s Association International Conference. It’s not yet clear whether the changes are a risk factor for dementia or a prodromal sign of neurodegeneration, but even without full elucidation, the findings could have value as a signal of impending neurodegeneration, said Dr. Jeon of Seoul (South Korea) National University.

“Our findings suggest that delayed acrophase may be used as a predictor for the progression of Alzheimer’s-type neurodegeneration and cognitive decline in the near future in old individuals with diverse cognitive status,” she said. “But the relationship between circadian phases and neurodegeneration is complex and not yet well understood.”

The 24-month study comprised 215 elderly adults enrolled in the Korean Brain Aging Study for the Early Diagnosis and Prediction of Alzheimer’s Disease (KBASE). They were a mean of 70 years old at baseline; 143 were cognitively normal, 40 had mild cognitive impairment, and 32 had Alzheimer’s dementia. Both at baseline and 2 years, everyone underwent a comprehensive neuropsychological assessment, amyloid PET brain imaging with Pittsburgh compound B, and an [18F]-fluorodeoxyglucose PET scan to determine brain glucose metabolic rate.

Before each assessment, the investigators measured sleep and circadian rhythms with 8 days of actigraphy. This assessed sleep variables (total sleep time, sleep latency, sleep efficiency, and wakefulness after sleep); rest-activity rhythm variables (midline estimated statistic of rhythm, amplitude, and acrophase), and some nonparametric values including interdaily stability, intradaily variability, and relative amplitude of sleep cycles. Subjects also completed sleep diaries during these periods.

The study’s main outcomes were 2-year changes in the Mini Mental State Exam (MMSE) score and in Alzheimer’s imaging biomarkers, including glucose metabolism and amyloid deposition. All analyses controlled for age, sex, Clinical Dementia Rating score, apolipoprotein E allele status, and baseline cognition.

At baseline, lower total sleep time was significantly associated with hypometabolism in areas associated with Alzheimer’s pathology as well as lower mean MMSE scores. Circadian variables showed no significant associations with these characteristics. However, the relative amplitude of circadian rhythm was significantly associated with hypometabolism and with lower MMSE score. There were no associations with brain amyloid load.

At 2 years, acrophase was associated with declines in cerebral glucose metabolism and further changes in the MMSE, even after the researchers controlled for the potential confounders. Delayed acrophase, although not associated with either metabolic rate or cognition at baseline, did significantly influence both at 2 years, suggesting a rapidly eroding clinical picture.

“Neurodegeneration over 2 years means the disease is progressing rapidly and subjects are likely to have tauopathies or other proteinopathy,” Dr. Jeon said. “These pathologies may either be resulting in delayed acrophase followed by neurodegeneration, or they may be prodromal symptoms of impending neurodegeneration. Whether they are early symptoms or early risk factors is not currently known, however. Two years is too short of a follow-up to determine these questions.”

Dr. Jeon had no financial declarations.

[email protected]

SOURCE: Jeon SY et al. AAIC 2019, abstract 33543.

LOS ANGELES – Dysregulated sleep-wake cycles may be linked to cerebral glucose hypometabolism and subtle cognitive changes, both of which are early signs of Alzheimer’s disease–like neurodegeneration, according to a 2-year study of older Korean adults.

Michele G. Sullivan/MDedge News

The association was particularly strong in subjects who experienced delayed acrophase, the peak of the normal sleep-wake cycle, So-Yeon Jeon, MD, said at the Alzheimer’s Association International Conference. It’s not yet clear whether the changes are a risk factor for dementia or a prodromal sign of neurodegeneration, but even without full elucidation, the findings could have value as a signal of impending neurodegeneration, said Dr. Jeon of Seoul (South Korea) National University.

“Our findings suggest that delayed acrophase may be used as a predictor for the progression of Alzheimer’s-type neurodegeneration and cognitive decline in the near future in old individuals with diverse cognitive status,” she said. “But the relationship between circadian phases and neurodegeneration is complex and not yet well understood.”

The 24-month study comprised 215 elderly adults enrolled in the Korean Brain Aging Study for the Early Diagnosis and Prediction of Alzheimer’s Disease (KBASE). They were a mean of 70 years old at baseline; 143 were cognitively normal, 40 had mild cognitive impairment, and 32 had Alzheimer’s dementia. Both at baseline and 2 years, everyone underwent a comprehensive neuropsychological assessment, amyloid PET brain imaging with Pittsburgh compound B, and an [18F]-fluorodeoxyglucose PET scan to determine brain glucose metabolic rate.

Before each assessment, the investigators measured sleep and circadian rhythms with 8 days of actigraphy. This assessed sleep variables (total sleep time, sleep latency, sleep efficiency, and wakefulness after sleep); rest-activity rhythm variables (midline estimated statistic of rhythm, amplitude, and acrophase), and some nonparametric values including interdaily stability, intradaily variability, and relative amplitude of sleep cycles. Subjects also completed sleep diaries during these periods.

The study’s main outcomes were 2-year changes in the Mini Mental State Exam (MMSE) score and in Alzheimer’s imaging biomarkers, including glucose metabolism and amyloid deposition. All analyses controlled for age, sex, Clinical Dementia Rating score, apolipoprotein E allele status, and baseline cognition.

At baseline, lower total sleep time was significantly associated with hypometabolism in areas associated with Alzheimer’s pathology as well as lower mean MMSE scores. Circadian variables showed no significant associations with these characteristics. However, the relative amplitude of circadian rhythm was significantly associated with hypometabolism and with lower MMSE score. There were no associations with brain amyloid load.

At 2 years, acrophase was associated with declines in cerebral glucose metabolism and further changes in the MMSE, even after the researchers controlled for the potential confounders. Delayed acrophase, although not associated with either metabolic rate or cognition at baseline, did significantly influence both at 2 years, suggesting a rapidly eroding clinical picture.

“Neurodegeneration over 2 years means the disease is progressing rapidly and subjects are likely to have tauopathies or other proteinopathy,” Dr. Jeon said. “These pathologies may either be resulting in delayed acrophase followed by neurodegeneration, or they may be prodromal symptoms of impending neurodegeneration. Whether they are early symptoms or early risk factors is not currently known, however. Two years is too short of a follow-up to determine these questions.”

Dr. Jeon had no financial declarations.

[email protected]

SOURCE: Jeon SY et al. AAIC 2019, abstract 33543.

LOS ANGELES – Dysregulated sleep-wake cycles may be linked to cerebral glucose hypometabolism and subtle cognitive changes, both of which are early signs of Alzheimer’s disease–like neurodegeneration, according to a 2-year study of older Korean adults.

Michele G. Sullivan/MDedge News

The association was particularly strong in subjects who experienced delayed acrophase, the peak of the normal sleep-wake cycle, So-Yeon Jeon, MD, said at the Alzheimer’s Association International Conference. It’s not yet clear whether the changes are a risk factor for dementia or a prodromal sign of neurodegeneration, but even without full elucidation, the findings could have value as a signal of impending neurodegeneration, said Dr. Jeon of Seoul (South Korea) National University.

“Our findings suggest that delayed acrophase may be used as a predictor for the progression of Alzheimer’s-type neurodegeneration and cognitive decline in the near future in old individuals with diverse cognitive status,” she said. “But the relationship between circadian phases and neurodegeneration is complex and not yet well understood.”

The 24-month study comprised 215 elderly adults enrolled in the Korean Brain Aging Study for the Early Diagnosis and Prediction of Alzheimer’s Disease (KBASE). They were a mean of 70 years old at baseline; 143 were cognitively normal, 40 had mild cognitive impairment, and 32 had Alzheimer’s dementia. Both at baseline and 2 years, everyone underwent a comprehensive neuropsychological assessment, amyloid PET brain imaging with Pittsburgh compound B, and an [18F]-fluorodeoxyglucose PET scan to determine brain glucose metabolic rate.

Before each assessment, the investigators measured sleep and circadian rhythms with 8 days of actigraphy. This assessed sleep variables (total sleep time, sleep latency, sleep efficiency, and wakefulness after sleep); rest-activity rhythm variables (midline estimated statistic of rhythm, amplitude, and acrophase), and some nonparametric values including interdaily stability, intradaily variability, and relative amplitude of sleep cycles. Subjects also completed sleep diaries during these periods.

The study’s main outcomes were 2-year changes in the Mini Mental State Exam (MMSE) score and in Alzheimer’s imaging biomarkers, including glucose metabolism and amyloid deposition. All analyses controlled for age, sex, Clinical Dementia Rating score, apolipoprotein E allele status, and baseline cognition.

At baseline, lower total sleep time was significantly associated with hypometabolism in areas associated with Alzheimer’s pathology as well as lower mean MMSE scores. Circadian variables showed no significant associations with these characteristics. However, the relative amplitude of circadian rhythm was significantly associated with hypometabolism and with lower MMSE score. There were no associations with brain amyloid load.

At 2 years, acrophase was associated with declines in cerebral glucose metabolism and further changes in the MMSE, even after the researchers controlled for the potential confounders. Delayed acrophase, although not associated with either metabolic rate or cognition at baseline, did significantly influence both at 2 years, suggesting a rapidly eroding clinical picture.

“Neurodegeneration over 2 years means the disease is progressing rapidly and subjects are likely to have tauopathies or other proteinopathy,” Dr. Jeon said. “These pathologies may either be resulting in delayed acrophase followed by neurodegeneration, or they may be prodromal symptoms of impending neurodegeneration. Whether they are early symptoms or early risk factors is not currently known, however. Two years is too short of a follow-up to determine these questions.”

Dr. Jeon had no financial declarations.

[email protected]

SOURCE: Jeon SY et al. AAIC 2019, abstract 33543.

Adding the amyloid/tau/neurodegeneration (A/T/N) model of dementia to a clinical model may give an incremental but still significantly increased ability to predict cognitive decline over nearly 5 years, according to findings from a longitudinal cohort study of patients without dementia at baseline.

Courtesy Mayo Clinic

Although the A/T/N model is still intended only for research purposes, the study came to another important conclusion: About 50% of the memory change associated with normal aging was, in fact, caused by changes associated with Alzheimer’s disease, Clifford R. Jack Jr., MD, and colleagues wrote in JAMA.

The three groups with the fastest rates of memory decline all had abnormal amyloid and either abnormal tau and/or imaging signs of neurodegeneration. “This illustrated a dominant association of memory decline with amyloidosis but only when present in combination with tauopathy, neurodegeneration, or both,” Dr. Jack of the Mayo Clinic, Rochester, Minn., and coauthors wrote.

A/T/N, also known as the National Institute on Aging and Alzheimer’s Association Research Framework, is based on objective amyloid and tau biomarkers and imaging markers of neurodegeneration and is intended to more accurately differentiate Alzheimer’s from other dementias and, potentially, to stage the disease and predict and track decline. It generates eight clinical profiles that can identify Alzheimer’s, rule it out, or include it as a possible diagnosis.

The study comprised 480 elderly individuals enrolled in the Mayo Clinic Study on Aging. Median age of the participants ranged from 67 years in one of the eight clinical profiles (A–/T–/N–) to 83 years in another (A+/T+/N+). Most (92%) were cognitively normal; the remainder had mild cognitive impairment (MCI). They were followed for a median of 4.8 years.

Both amyloid and tau were measured with PET imaging; neuropathology was represented by MRI scans of cortical thickness. Most (n = 140) were negative for all biomarkers (A–/T–/N–). The group positive for all markers (A+/T+/N+) had the largest proportion of MCI subjects (30%). The apolipoprotein E epsilon 4 (APOE4) genotype was more common among the A+ groups than it was among the A– groups (40% vs. 21%).

The individual cognitive decline trajectories varied considerably by age and within each classification group. Only 7% of the A–/T–/N– group were 80 years or older, and only 2% of the A+/N+/T+ group were younger than 70 years.

In a clinical model, age and APOE4 status were significantly associated with faster rates of memory decline. Sex, education, and a cardiovascular/metabolic model were not, however.

“The estimated rate of memory decline in a 75-year-old individual who was an APOE4 noncarrier was –0.04 z-score units per year,” the authors wrote. “An 85-year-old individual who was also an APOE4 noncarrier could be expected to have a decline of –0.08 units per year, while a 75-year-old E4 carrier could be expected to have a decline of –0.08 units per year.”

Every 10 years of additional age was associated with a significant median worsening of 0.4 on z score for memory. A 4-year difference in education was associated with a 0.6-unit higher memory score, while APOE4 carriers had a 0.3-unit lower memory score.

The addition of the A/T/N model significantly improved the prediction of cognitive decline and memory score, although the rates of decline were still considerably variable. All of the A+ groups had the fastest decline rates.

“To place the predictive utility of biomarkers in clinical context, the decline in rates of memory for A+/T+/N–, A+/T–/N+, A+/T+/N+ [abnormal amyloid plus tau or neurodegeneration] were of similar magnitude to a 20-year increase in age and were twice that associated with APOE4 carriership,” they wrote.

A total of 88 participants had a second imaging visit at a median of 15 months. Most (n = 72) had no change in the A/T/N classification. A and T classifications were more stable (98% and 97%, respectively) than was N classification (84%).

A secondary analysis compared this model with generally accepted clinical and biomarker characteristics. Prior research has shown that prevalence of abnormal A/T/N biomarker groups increased with age in the Mayo Clinic Study on Aging. The mean annual memory z-score in this cohort at 60 years was 0.02, which dropped to 0.11 by age 90.

“Forty-six percent of this increase in decline rate [–0.06] was partitioned to the increasing prevalence of abnormal A/T/N profiles, while the remaining decline [–0.07] was partitioned to age,” the investigators reported.

While A+ subjects were most likely to decline, the A+/T–/N+ group presents a conundrum, the team wrote. “A possible explanation is that these individuals have early Alzheimer’s disease [denoted by A+T–] plus neurodegeneration due to comorbid non–Alzheimer’s disease neuropathic changes.”

This is an important point because the cognitive decline of Alzheimer’s is thought to be largely associated with tauopathy, not amyloidosis. “One possible explanation is an effect of subthreshold tau in A+/T–/N+ individuals, but this is speculative. Clearer understanding of the neuropathologic bases for the A+/T–/N+ group, as well as other A/T/N groups, awaits future biomarker-autopsy correlation studies.”

[email protected]

SOURCE: Jack CR et al. JAMA 2019;321:2316-25.

Adding the amyloid/tau/neurodegeneration (A/T/N) model of dementia to a clinical model may give an incremental but still significantly increased ability to predict cognitive decline over nearly 5 years, according to findings from a longitudinal cohort study of patients without dementia at baseline.

Courtesy Mayo Clinic

Although the A/T/N model is still intended only for research purposes, the study came to another important conclusion: About 50% of the memory change associated with normal aging was, in fact, caused by changes associated with Alzheimer’s disease, Clifford R. Jack Jr., MD, and colleagues wrote in JAMA.

The three groups with the fastest rates of memory decline all had abnormal amyloid and either abnormal tau and/or imaging signs of neurodegeneration. “This illustrated a dominant association of memory decline with amyloidosis but only when present in combination with tauopathy, neurodegeneration, or both,” Dr. Jack of the Mayo Clinic, Rochester, Minn., and coauthors wrote.

A/T/N, also known as the National Institute on Aging and Alzheimer’s Association Research Framework, is based on objective amyloid and tau biomarkers and imaging markers of neurodegeneration and is intended to more accurately differentiate Alzheimer’s from other dementias and, potentially, to stage the disease and predict and track decline. It generates eight clinical profiles that can identify Alzheimer’s, rule it out, or include it as a possible diagnosis.

The study comprised 480 elderly individuals enrolled in the Mayo Clinic Study on Aging. Median age of the participants ranged from 67 years in one of the eight clinical profiles (A–/T–/N–) to 83 years in another (A+/T+/N+). Most (92%) were cognitively normal; the remainder had mild cognitive impairment (MCI). They were followed for a median of 4.8 years.

Both amyloid and tau were measured with PET imaging; neuropathology was represented by MRI scans of cortical thickness. Most (n = 140) were negative for all biomarkers (A–/T–/N–). The group positive for all markers (A+/T+/N+) had the largest proportion of MCI subjects (30%). The apolipoprotein E epsilon 4 (APOE4) genotype was more common among the A+ groups than it was among the A– groups (40% vs. 21%).

The individual cognitive decline trajectories varied considerably by age and within each classification group. Only 7% of the A–/T–/N– group were 80 years or older, and only 2% of the A+/N+/T+ group were younger than 70 years.

In a clinical model, age and APOE4 status were significantly associated with faster rates of memory decline. Sex, education, and a cardiovascular/metabolic model were not, however.

“The estimated rate of memory decline in a 75-year-old individual who was an APOE4 noncarrier was –0.04 z-score units per year,” the authors wrote. “An 85-year-old individual who was also an APOE4 noncarrier could be expected to have a decline of –0.08 units per year, while a 75-year-old E4 carrier could be expected to have a decline of –0.08 units per year.”

Every 10 years of additional age was associated with a significant median worsening of 0.4 on z score for memory. A 4-year difference in education was associated with a 0.6-unit higher memory score, while APOE4 carriers had a 0.3-unit lower memory score.

The addition of the A/T/N model significantly improved the prediction of cognitive decline and memory score, although the rates of decline were still considerably variable. All of the A+ groups had the fastest decline rates.

“To place the predictive utility of biomarkers in clinical context, the decline in rates of memory for A+/T+/N–, A+/T–/N+, A+/T+/N+ [abnormal amyloid plus tau or neurodegeneration] were of similar magnitude to a 20-year increase in age and were twice that associated with APOE4 carriership,” they wrote.

A total of 88 participants had a second imaging visit at a median of 15 months. Most (n = 72) had no change in the A/T/N classification. A and T classifications were more stable (98% and 97%, respectively) than was N classification (84%).

A secondary analysis compared this model with generally accepted clinical and biomarker characteristics. Prior research has shown that prevalence of abnormal A/T/N biomarker groups increased with age in the Mayo Clinic Study on Aging. The mean annual memory z-score in this cohort at 60 years was 0.02, which dropped to 0.11 by age 90.

“Forty-six percent of this increase in decline rate [–0.06] was partitioned to the increasing prevalence of abnormal A/T/N profiles, while the remaining decline [–0.07] was partitioned to age,” the investigators reported.

While A+ subjects were most likely to decline, the A+/T–/N+ group presents a conundrum, the team wrote. “A possible explanation is that these individuals have early Alzheimer’s disease [denoted by A+T–] plus neurodegeneration due to comorbid non–Alzheimer’s disease neuropathic changes.”

This is an important point because the cognitive decline of Alzheimer’s is thought to be largely associated with tauopathy, not amyloidosis. “One possible explanation is an effect of subthreshold tau in A+/T–/N+ individuals, but this is speculative. Clearer understanding of the neuropathologic bases for the A+/T–/N+ group, as well as other A/T/N groups, awaits future biomarker-autopsy correlation studies.”

[email protected]

SOURCE: Jack CR et al. JAMA 2019;321:2316-25.

Adding the amyloid/tau/neurodegeneration (A/T/N) model of dementia to a clinical model may give an incremental but still significantly increased ability to predict cognitive decline over nearly 5 years, according to findings from a longitudinal cohort study of patients without dementia at baseline.

Courtesy Mayo Clinic

Although the A/T/N model is still intended only for research purposes, the study came to another important conclusion: About 50% of the memory change associated with normal aging was, in fact, caused by changes associated with Alzheimer’s disease, Clifford R. Jack Jr., MD, and colleagues wrote in JAMA.

The three groups with the fastest rates of memory decline all had abnormal amyloid and either abnormal tau and/or imaging signs of neurodegeneration. “This illustrated a dominant association of memory decline with amyloidosis but only when present in combination with tauopathy, neurodegeneration, or both,” Dr. Jack of the Mayo Clinic, Rochester, Minn., and coauthors wrote.

A/T/N, also known as the National Institute on Aging and Alzheimer’s Association Research Framework, is based on objective amyloid and tau biomarkers and imaging markers of neurodegeneration and is intended to more accurately differentiate Alzheimer’s from other dementias and, potentially, to stage the disease and predict and track decline. It generates eight clinical profiles that can identify Alzheimer’s, rule it out, or include it as a possible diagnosis.

The study comprised 480 elderly individuals enrolled in the Mayo Clinic Study on Aging. Median age of the participants ranged from 67 years in one of the eight clinical profiles (A–/T–/N–) to 83 years in another (A+/T+/N+). Most (92%) were cognitively normal; the remainder had mild cognitive impairment (MCI). They were followed for a median of 4.8 years.

Both amyloid and tau were measured with PET imaging; neuropathology was represented by MRI scans of cortical thickness. Most (n = 140) were negative for all biomarkers (A–/T–/N–). The group positive for all markers (A+/T+/N+) had the largest proportion of MCI subjects (30%). The apolipoprotein E epsilon 4 (APOE4) genotype was more common among the A+ groups than it was among the A– groups (40% vs. 21%).

The individual cognitive decline trajectories varied considerably by age and within each classification group. Only 7% of the A–/T–/N– group were 80 years or older, and only 2% of the A+/N+/T+ group were younger than 70 years.

In a clinical model, age and APOE4 status were significantly associated with faster rates of memory decline. Sex, education, and a cardiovascular/metabolic model were not, however.

“The estimated rate of memory decline in a 75-year-old individual who was an APOE4 noncarrier was –0.04 z-score units per year,” the authors wrote. “An 85-year-old individual who was also an APOE4 noncarrier could be expected to have a decline of –0.08 units per year, while a 75-year-old E4 carrier could be expected to have a decline of –0.08 units per year.”

Every 10 years of additional age was associated with a significant median worsening of 0.4 on z score for memory. A 4-year difference in education was associated with a 0.6-unit higher memory score, while APOE4 carriers had a 0.3-unit lower memory score.

The addition of the A/T/N model significantly improved the prediction of cognitive decline and memory score, although the rates of decline were still considerably variable. All of the A+ groups had the fastest decline rates.

“To place the predictive utility of biomarkers in clinical context, the decline in rates of memory for A+/T+/N–, A+/T–/N+, A+/T+/N+ [abnormal amyloid plus tau or neurodegeneration] were of similar magnitude to a 20-year increase in age and were twice that associated with APOE4 carriership,” they wrote.

A total of 88 participants had a second imaging visit at a median of 15 months. Most (n = 72) had no change in the A/T/N classification. A and T classifications were more stable (98% and 97%, respectively) than was N classification (84%).

A secondary analysis compared this model with generally accepted clinical and biomarker characteristics. Prior research has shown that prevalence of abnormal A/T/N biomarker groups increased with age in the Mayo Clinic Study on Aging. The mean annual memory z-score in this cohort at 60 years was 0.02, which dropped to 0.11 by age 90.

“Forty-six percent of this increase in decline rate [–0.06] was partitioned to the increasing prevalence of abnormal A/T/N profiles, while the remaining decline [–0.07] was partitioned to age,” the investigators reported.

While A+ subjects were most likely to decline, the A+/T–/N+ group presents a conundrum, the team wrote. “A possible explanation is that these individuals have early Alzheimer’s disease [denoted by A+T–] plus neurodegeneration due to comorbid non–Alzheimer’s disease neuropathic changes.”

This is an important point because the cognitive decline of Alzheimer’s is thought to be largely associated with tauopathy, not amyloidosis. “One possible explanation is an effect of subthreshold tau in A+/T–/N+ individuals, but this is speculative. Clearer understanding of the neuropathologic bases for the A+/T–/N+ group, as well as other A/T/N groups, awaits future biomarker-autopsy correlation studies.”

[email protected]

SOURCE: Jack CR et al. JAMA 2019;321:2316-25.

A large Kaiser Permanente study paints a nuanced picture of the acellular pertussis vaccine, with more cases occurring in fully vaccinated children, but the highest risk of disease occurring among the under- and unvaccinated.

Sean Locke/iStockphoto

Among nearly half a million children, the unvaccinated were 13 times more likely to develop pertussis than fully vaccinated children, Ousseny Zerbo, PhD, of Kaiser Permanente Northern California in Oakland and colleagues wrote in Pediatrics. But 82% of cases occurred in fully vaccinated children and just 5% in undervaccinated children – and rates increased in both groups the farther they were in time from the last vaccination.

“Within our study population, greater than 80% of pertussis cases occurred among age-appropriately vaccinated children,” the team wrote. “Children who were further away from their last DTaP dose were at increased risk of pertussis, even after controlling for undervaccination. Our results suggest that, in this population, possibly in conjunction with other factors not addressed in this study, suboptimal vaccine efficacy and waning [immunity] played a major role in recent pertussis epidemics.”

The results are consistent with several prior studies, including one finding that the odds of the disease increased by 33% for every additional year after the third or fifth DTaP dose (Pediatrics. 2015;135[2]:331-43).

The current study comprised 469,982 children aged between 3 months and 11 years, who were followed for a mean of 4.6 years. Over the entire study period, there were 738 lab-confirmed pertussis cases. Most of these (515; 70%) occurred in fully vaccinated children. Another 99 (13%) occurred in unvaccinated children, 36 (5%) in undervaccinated children, and 88 (12%) in fully vaccinated plus one dose.

In a multivariate analysis, the risk of pertussis was 13 times higher among the unvaccinated (adjusted hazard ratio, 13) and almost 2 times higher among the undervaccinated (aHR, 1.9), compared with fully vaccinated children. Those who had been fully vaccinated and received a booster had the lowest risk, about half that of fully vaccinated children (aHR, 0.48).

Risk varied according to age, but also was significantly higher among unvaccinated children at each time point. Risk ranged from 4 times higher among those aged 3-5 months to 23 times higher among those aged 19-84 months. Undervaccinated children aged 5-7 months and 19-84 months also were at significantly increased risk for pertussis, compared with fully vaccinated children. Children who were fully vaccinated plus one dose had a significantly reduced risk at 7-19 months and at 19-84 months, compared with the fully vaccinated reference group.

“Across all follow-up and all age groups, VE [vaccine effectiveness] was 86% ... for undervaccinated children, compared with unvaccinated children,” Dr. Zerbo and associates wrote. “VE was even higher for fully vaccinated children [93%] and for those who were fully vaccinated plus one dose [96%].”

But VE waned as time progressed farther from the last DTaP dose. The multivariate model found more than a 100% increased risk for those whose last DTaP was at least 3 years past, compared with less than 1 year past (aHR, 2.58).

The model also found time-bound risk increases among fully vaccinated children, with a more than 300% increased risk among those at least 6 years out from the last DTaP dose, compared with 3 years out (aHR, 4.66).

The results indicate that other factors besides adherence to the recommended vaccine schedule may be at work in recent pertussis outbreaks.

“Although waning immunity is clearly an important factor driving pertussis epidemics in recent years, other factors that we did not evaluate in this study might also contribute to pertussis epidemics individually or in synergy,” Dr. Zerbo and associates wrote. “Results from studies in baboons suggest that the acellular pertussis vaccines are unable to prevent colonization, carriage, and transmission. If this is also true for humans, this could contribute to pertussis epidemics. The causes of recent pertussis epidemics are complex, and we were only able to address some aspects in our study.”

The study was funded by Kaiser Permanente Northern California, the National Institutes of Health, and in part by a National Institute of Allergy and Infectious Diseases grant. One coauthor reported receiving research grant support from Sanofi Pasteur, Novartis, GlaxoSmithKline, Merck, MedImmune, Pfizer, and Dynavax for unrelated studies; the other authors reported no relevant financial disclosures.

[email protected]

SOURCE: Zerbo O et al. Pediatrics. 2019 Jun 10. doi: 10.1542/peds.2018-3466.

A large Kaiser Permanente study paints a nuanced picture of the acellular pertussis vaccine, with more cases occurring in fully vaccinated children, but the highest risk of disease occurring among the under- and unvaccinated.

Sean Locke/iStockphoto

Among nearly half a million children, the unvaccinated were 13 times more likely to develop pertussis than fully vaccinated children, Ousseny Zerbo, PhD, of Kaiser Permanente Northern California in Oakland and colleagues wrote in Pediatrics. But 82% of cases occurred in fully vaccinated children and just 5% in undervaccinated children – and rates increased in both groups the farther they were in time from the last vaccination.

“Within our study population, greater than 80% of pertussis cases occurred among age-appropriately vaccinated children,” the team wrote. “Children who were further away from their last DTaP dose were at increased risk of pertussis, even after controlling for undervaccination. Our results suggest that, in this population, possibly in conjunction with other factors not addressed in this study, suboptimal vaccine efficacy and waning [immunity] played a major role in recent pertussis epidemics.”

The results are consistent with several prior studies, including one finding that the odds of the disease increased by 33% for every additional year after the third or fifth DTaP dose (Pediatrics. 2015;135[2]:331-43).

The current study comprised 469,982 children aged between 3 months and 11 years, who were followed for a mean of 4.6 years. Over the entire study period, there were 738 lab-confirmed pertussis cases. Most of these (515; 70%) occurred in fully vaccinated children. Another 99 (13%) occurred in unvaccinated children, 36 (5%) in undervaccinated children, and 88 (12%) in fully vaccinated plus one dose.

In a multivariate analysis, the risk of pertussis was 13 times higher among the unvaccinated (adjusted hazard ratio, 13) and almost 2 times higher among the undervaccinated (aHR, 1.9), compared with fully vaccinated children. Those who had been fully vaccinated and received a booster had the lowest risk, about half that of fully vaccinated children (aHR, 0.48).

Risk varied according to age, but also was significantly higher among unvaccinated children at each time point. Risk ranged from 4 times higher among those aged 3-5 months to 23 times higher among those aged 19-84 months. Undervaccinated children aged 5-7 months and 19-84 months also were at significantly increased risk for pertussis, compared with fully vaccinated children. Children who were fully vaccinated plus one dose had a significantly reduced risk at 7-19 months and at 19-84 months, compared with the fully vaccinated reference group.

“Across all follow-up and all age groups, VE [vaccine effectiveness] was 86% ... for undervaccinated children, compared with unvaccinated children,” Dr. Zerbo and associates wrote. “VE was even higher for fully vaccinated children [93%] and for those who were fully vaccinated plus one dose [96%].”

But VE waned as time progressed farther from the last DTaP dose. The multivariate model found more than a 100% increased risk for those whose last DTaP was at least 3 years past, compared with less than 1 year past (aHR, 2.58).

The model also found time-bound risk increases among fully vaccinated children, with a more than 300% increased risk among those at least 6 years out from the last DTaP dose, compared with 3 years out (aHR, 4.66).

The results indicate that other factors besides adherence to the recommended vaccine schedule may be at work in recent pertussis outbreaks.

“Although waning immunity is clearly an important factor driving pertussis epidemics in recent years, other factors that we did not evaluate in this study might also contribute to pertussis epidemics individually or in synergy,” Dr. Zerbo and associates wrote. “Results from studies in baboons suggest that the acellular pertussis vaccines are unable to prevent colonization, carriage, and transmission. If this is also true for humans, this could contribute to pertussis epidemics. The causes of recent pertussis epidemics are complex, and we were only able to address some aspects in our study.”

The study was funded by Kaiser Permanente Northern California, the National Institutes of Health, and in part by a National Institute of Allergy and Infectious Diseases grant. One coauthor reported receiving research grant support from Sanofi Pasteur, Novartis, GlaxoSmithKline, Merck, MedImmune, Pfizer, and Dynavax for unrelated studies; the other authors reported no relevant financial disclosures.

[email protected]

SOURCE: Zerbo O et al. Pediatrics. 2019 Jun 10. doi: 10.1542/peds.2018-3466.

A large Kaiser Permanente study paints a nuanced picture of the acellular pertussis vaccine, with more cases occurring in fully vaccinated children, but the highest risk of disease occurring among the under- and unvaccinated.

Sean Locke/iStockphoto

Among nearly half a million children, the unvaccinated were 13 times more likely to develop pertussis than fully vaccinated children, Ousseny Zerbo, PhD, of Kaiser Permanente Northern California in Oakland and colleagues wrote in Pediatrics. But 82% of cases occurred in fully vaccinated children and just 5% in undervaccinated children – and rates increased in both groups the farther they were in time from the last vaccination.

“Within our study population, greater than 80% of pertussis cases occurred among age-appropriately vaccinated children,” the team wrote. “Children who were further away from their last DTaP dose were at increased risk of pertussis, even after controlling for undervaccination. Our results suggest that, in this population, possibly in conjunction with other factors not addressed in this study, suboptimal vaccine efficacy and waning [immunity] played a major role in recent pertussis epidemics.”

The results are consistent with several prior studies, including one finding that the odds of the disease increased by 33% for every additional year after the third or fifth DTaP dose (Pediatrics. 2015;135[2]:331-43).

The current study comprised 469,982 children aged between 3 months and 11 years, who were followed for a mean of 4.6 years. Over the entire study period, there were 738 lab-confirmed pertussis cases. Most of these (515; 70%) occurred in fully vaccinated children. Another 99 (13%) occurred in unvaccinated children, 36 (5%) in undervaccinated children, and 88 (12%) in fully vaccinated plus one dose.

In a multivariate analysis, the risk of pertussis was 13 times higher among the unvaccinated (adjusted hazard ratio, 13) and almost 2 times higher among the undervaccinated (aHR, 1.9), compared with fully vaccinated children. Those who had been fully vaccinated and received a booster had the lowest risk, about half that of fully vaccinated children (aHR, 0.48).

Risk varied according to age, but also was significantly higher among unvaccinated children at each time point. Risk ranged from 4 times higher among those aged 3-5 months to 23 times higher among those aged 19-84 months. Undervaccinated children aged 5-7 months and 19-84 months also were at significantly increased risk for pertussis, compared with fully vaccinated children. Children who were fully vaccinated plus one dose had a significantly reduced risk at 7-19 months and at 19-84 months, compared with the fully vaccinated reference group.

“Across all follow-up and all age groups, VE [vaccine effectiveness] was 86% ... for undervaccinated children, compared with unvaccinated children,” Dr. Zerbo and associates wrote. “VE was even higher for fully vaccinated children [93%] and for those who were fully vaccinated plus one dose [96%].”

But VE waned as time progressed farther from the last DTaP dose. The multivariate model found more than a 100% increased risk for those whose last DTaP was at least 3 years past, compared with less than 1 year past (aHR, 2.58).

The model also found time-bound risk increases among fully vaccinated children, with a more than 300% increased risk among those at least 6 years out from the last DTaP dose, compared with 3 years out (aHR, 4.66).

The results indicate that other factors besides adherence to the recommended vaccine schedule may be at work in recent pertussis outbreaks.

“Although waning immunity is clearly an important factor driving pertussis epidemics in recent years, other factors that we did not evaluate in this study might also contribute to pertussis epidemics individually or in synergy,” Dr. Zerbo and associates wrote. “Results from studies in baboons suggest that the acellular pertussis vaccines are unable to prevent colonization, carriage, and transmission. If this is also true for humans, this could contribute to pertussis epidemics. The causes of recent pertussis epidemics are complex, and we were only able to address some aspects in our study.”

The study was funded by Kaiser Permanente Northern California, the National Institutes of Health, and in part by a National Institute of Allergy and Infectious Diseases grant. One coauthor reported receiving research grant support from Sanofi Pasteur, Novartis, GlaxoSmithKline, Merck, MedImmune, Pfizer, and Dynavax for unrelated studies; the other authors reported no relevant financial disclosures.

[email protected]

SOURCE: Zerbo O et al. Pediatrics. 2019 Jun 10. doi: 10.1542/peds.2018-3466.

Pediatric herpes zoster declined by 72% in the years following introduction of routine varicella vaccination, with the rates in vaccinated children 78% lower than those in unvaccinated children.

KatarzynaBialasiewicz/Thinkstock

The benefit became largely apparent after children received the second vaccination in the recommended series, and persisted throughout childhood, Sheila Weinmann, PhD, of Kaiser Permanente Northern California, Oakland, and colleagues said.*

The analysis included 6.37 million children in the Kaiser Permanente database, 50% of whom were vaccinated for all or some of the study period stretching from 2003 to 2014. Overall, the crude lab-confirmed herpes zoster (HZ) incidence rate was 74/100,000 person-years. When stratified by vaccine status, the crude rate of HZ among vaccinated children was 78% lower than among unvaccinated children (38 vs. 170 cases per 100,000 person years).

Herpes zoster was more common among girls than boys and up to six times more common in immunosuppressed children than in nonimmunosuppressed children.

The authors also found that unvaccinated children benefited from the high rate of vaccination around them. Although the HZ rate was always lower among vaccinated children, the rate among unvaccinated children fell sharply after 2007.

“The trend of decreasing HZ incidence among children who were unvaccinated is likely due to a lack of primary VZV [varicella-zoster virus] infection resulting from herd immunity in a highly vaccinated population,” Dr. Weinmann and her associates said.

There was some variability among age groups, especially among the youngest who were not fully vaccinated.

“In the group aged 1-2 years, the confirmation-adjusted HZ rate among children who were vaccinated was 70% higher than among those who were unvaccinated,” the authors said. In the “older groups, HZ rates were significantly higher in children who were unvaccinated than in those who were vaccinated,” the researchers noted.

The highest incidence was among vaccinated 1-year-olds, who had a 140% higher risk of HZ than did unvaccinated 1-year-olds. But this risk elevation disappeared by age 2 years. For everyone else, aged 2-17 years, the rate of HZ remained significantly lower in vaccinated children.

“Among the small number of children vaccinated at 11 months of age (for whom the vaccine is not recommended), the HZ incidence rate was significantly higher than in children vaccinated at 1 year of age and older. Similarly, children who contract wild-type varicella infection at younger than 1 year of age also have a higher risk of HZ (relative risk, 13.5). The immature adaptive T-cell response in children less than 1 year of age appears less able to contain VZV as a latent infection, compared with older children.

“Our findings for 11-month-olds who were vaccinated should be interpreted with caution because this population included only three cases of HZ and could have included children participating in a prelicensure study with a vaccine formulation different from Varivax,” Dr. Weinmann and her associates said.

Dr. Weinmann and her associates reported no relevant financial disclosures. The study was supported by the Centers for Disease Control and Prevention.

[email protected]

SOURCE: Weinmann S et al. Pediatrics. 2019 Jun 10. doi: 10.1542/peds.2018-2917.

* This article was updated 6/14/2019

Pediatric herpes zoster declined by 72% in the years following introduction of routine varicella vaccination, with the rates in vaccinated children 78% lower than those in unvaccinated children.

KatarzynaBialasiewicz/Thinkstock

The benefit became largely apparent after children received the second vaccination in the recommended series, and persisted throughout childhood, Sheila Weinmann, PhD, of Kaiser Permanente Northern California, Oakland, and colleagues said.*

The analysis included 6.37 million children in the Kaiser Permanente database, 50% of whom were vaccinated for all or some of the study period stretching from 2003 to 2014. Overall, the crude lab-confirmed herpes zoster (HZ) incidence rate was 74/100,000 person-years. When stratified by vaccine status, the crude rate of HZ among vaccinated children was 78% lower than among unvaccinated children (38 vs. 170 cases per 100,000 person years).

Herpes zoster was more common among girls than boys and up to six times more common in immunosuppressed children than in nonimmunosuppressed children.

The authors also found that unvaccinated children benefited from the high rate of vaccination around them. Although the HZ rate was always lower among vaccinated children, the rate among unvaccinated children fell sharply after 2007.

“The trend of decreasing HZ incidence among children who were unvaccinated is likely due to a lack of primary VZV [varicella-zoster virus] infection resulting from herd immunity in a highly vaccinated population,” Dr. Weinmann and her associates said.

There was some variability among age groups, especially among the youngest who were not fully vaccinated.

“In the group aged 1-2 years, the confirmation-adjusted HZ rate among children who were vaccinated was 70% higher than among those who were unvaccinated,” the authors said. In the “older groups, HZ rates were significantly higher in children who were unvaccinated than in those who were vaccinated,” the researchers noted.

The highest incidence was among vaccinated 1-year-olds, who had a 140% higher risk of HZ than did unvaccinated 1-year-olds. But this risk elevation disappeared by age 2 years. For everyone else, aged 2-17 years, the rate of HZ remained significantly lower in vaccinated children.

“Among the small number of children vaccinated at 11 months of age (for whom the vaccine is not recommended), the HZ incidence rate was significantly higher than in children vaccinated at 1 year of age and older. Similarly, children who contract wild-type varicella infection at younger than 1 year of age also have a higher risk of HZ (relative risk, 13.5). The immature adaptive T-cell response in children less than 1 year of age appears less able to contain VZV as a latent infection, compared with older children.

“Our findings for 11-month-olds who were vaccinated should be interpreted with caution because this population included only three cases of HZ and could have included children participating in a prelicensure study with a vaccine formulation different from Varivax,” Dr. Weinmann and her associates said.

Dr. Weinmann and her associates reported no relevant financial disclosures. The study was supported by the Centers for Disease Control and Prevention.

[email protected]

SOURCE: Weinmann S et al. Pediatrics. 2019 Jun 10. doi: 10.1542/peds.2018-2917.

* This article was updated 6/14/2019

Pediatric herpes zoster declined by 72% in the years following introduction of routine varicella vaccination, with the rates in vaccinated children 78% lower than those in unvaccinated children.

KatarzynaBialasiewicz/Thinkstock

The benefit became largely apparent after children received the second vaccination in the recommended series, and persisted throughout childhood, Sheila Weinmann, PhD, of Kaiser Permanente Northern California, Oakland, and colleagues said.*

The analysis included 6.37 million children in the Kaiser Permanente database, 50% of whom were vaccinated for all or some of the study period stretching from 2003 to 2014. Overall, the crude lab-confirmed herpes zoster (HZ) incidence rate was 74/100,000 person-years. When stratified by vaccine status, the crude rate of HZ among vaccinated children was 78% lower than among unvaccinated children (38 vs. 170 cases per 100,000 person years).

Herpes zoster was more common among girls than boys and up to six times more common in immunosuppressed children than in nonimmunosuppressed children.

The authors also found that unvaccinated children benefited from the high rate of vaccination around them. Although the HZ rate was always lower among vaccinated children, the rate among unvaccinated children fell sharply after 2007.

“The trend of decreasing HZ incidence among children who were unvaccinated is likely due to a lack of primary VZV [varicella-zoster virus] infection resulting from herd immunity in a highly vaccinated population,” Dr. Weinmann and her associates said.

There was some variability among age groups, especially among the youngest who were not fully vaccinated.

“In the group aged 1-2 years, the confirmation-adjusted HZ rate among children who were vaccinated was 70% higher than among those who were unvaccinated,” the authors said. In the “older groups, HZ rates were significantly higher in children who were unvaccinated than in those who were vaccinated,” the researchers noted.

The highest incidence was among vaccinated 1-year-olds, who had a 140% higher risk of HZ than did unvaccinated 1-year-olds. But this risk elevation disappeared by age 2 years. For everyone else, aged 2-17 years, the rate of HZ remained significantly lower in vaccinated children.

“Among the small number of children vaccinated at 11 months of age (for whom the vaccine is not recommended), the HZ incidence rate was significantly higher than in children vaccinated at 1 year of age and older. Similarly, children who contract wild-type varicella infection at younger than 1 year of age also have a higher risk of HZ (relative risk, 13.5). The immature adaptive T-cell response in children less than 1 year of age appears less able to contain VZV as a latent infection, compared with older children.

“Our findings for 11-month-olds who were vaccinated should be interpreted with caution because this population included only three cases of HZ and could have included children participating in a prelicensure study with a vaccine formulation different from Varivax,” Dr. Weinmann and her associates said.

Dr. Weinmann and her associates reported no relevant financial disclosures. The study was supported by the Centers for Disease Control and Prevention.

[email protected]

SOURCE: Weinmann S et al. Pediatrics. 2019 Jun 10. doi: 10.1542/peds.2018-2917.

* This article was updated 6/14/2019

Subclinical atherosclerosis in the carotid arteries as measured by ultrasound appears to nearly triple the risk of a first cardiovascular event among patients with psoriatic disease, according to findings from a retrospective study.

pixologicstudio/Thinkstock.com

When added to the Framingham risk score, the measurement significantly improved its predictive ability, Curtis Sobchak, MD, and colleagues wrote in Arthritis & Rheumatology.

The findings indicate that carotid ultrasound could be a useful addition to cardiovascular risk stratification among these patients.

“Traditional algorithms do not consider other factors that may contribute to increased cardiovascular risk in rheumatic disease patients and tend to underestimate cardiovascular risk,” wrote Dr. Sobchak of the University of Toronto and coauthors.

“The advantage of ultrasound over other modalities for vascular imaging includes lack of radiation, low cost of the examination, and its widespread use in rheumatology for joint evaluation. Thus, this assessment could potentially be performed ‘at the bedside’ during consultation to provide immediate valuable information to complement clinical data from history, physical examination, and laboratory data,” they added.

The study retrospectively examined a prospective, observational cohort of 559 patients with psoriasis alone or psoriasis and psoriatic arthritis enrolled in the University of Toronto Psoriatic Disease Program. The investigators evaluated five ultrasound measures of atherosclerosis, including total plaque area (TPA), mean carotid intima-media thickness (cIMT), maximal cIMT, plaque category, and TPA category. Then they analyzed the risk relationship with major cardiovascular events (CVEs) classified as myocardial infarction, unstable angina, ischemic stroke, revascularization procedures, or cardiovascular-related death. Minor CVEs included stable angina, exacerbation of congestive heart failure, and transient ischemic attack over a mean follow-up close to 4 years.

The mean baseline TPA was 0.18 cm² and mean cIMT was 639 mcm. Most patients had plaques, including 27.0% with unilateral and 31.5% with bilateral plaques.

The rate of a first CVE during the study period was 1.11 per 100 patient-years, and the rate of a first major CVE was 0.91 per 100 patient-years. The risk of each was significantly related to a higher baseline burden of atherosclerosis.

A multivariate analysis determined that increased TPA at baseline increased the risk of an event by nearly 200% (hazard ratio, 2.85). Mean cIMT was not an independent predictor in the final analysis, “suggesting that TPA is a stronger predictor for CVE than cIMT,” the authors wrote.

Finally, they examined the predictive value of atherosclerosis alone, as well as combined with the Framingham risk score. The 5-year model indicated that the bivariate model was slightly more accurate than the Framingham score alone (area under the curve, 0.84 vs. 0.81), although this was not a significant difference. The predictive value of the Framingham risk score plus maximal cIMT, mean cIMT, or TPA all significantly improved when they were calculated using only high-risk patients (those above the treatment threshold for dyslipidemia).

“To the best of our knowledge this is the first study to assess the utility of various measures of carotid atherosclerosis to predict CVE in patients with psoriasis and PsA [psoriatic arthritis]. ... Combining vascular imaging data with clinical and laboratory measures of traditional cardiovascular risk factors could improve accuracy of cardiovascular risk stratification in patients with psoriatic disease and facilitate earlier initiation of appropriate treatment to reduce CVE in this population,” the investigators wrote.

The study was supported in part by a Young Investigator Operating Grant from the Arthritis Society. Dr. Sobchak had no financial disclosures.

[email protected]

SOURCE: Sobchak C et al. Arthritis Rheumatol. 2019 Jun 5. doi: 10.1002/art.40925.

Subclinical atherosclerosis in the carotid arteries as measured by ultrasound appears to nearly triple the risk of a first cardiovascular event among patients with psoriatic disease, according to findings from a retrospective study.

pixologicstudio/Thinkstock.com

When added to the Framingham risk score, the measurement significantly improved its predictive ability, Curtis Sobchak, MD, and colleagues wrote in Arthritis & Rheumatology.

The findings indicate that carotid ultrasound could be a useful addition to cardiovascular risk stratification among these patients.

“Traditional algorithms do not consider other factors that may contribute to increased cardiovascular risk in rheumatic disease patients and tend to underestimate cardiovascular risk,” wrote Dr. Sobchak of the University of Toronto and coauthors.

“The advantage of ultrasound over other modalities for vascular imaging includes lack of radiation, low cost of the examination, and its widespread use in rheumatology for joint evaluation. Thus, this assessment could potentially be performed ‘at the bedside’ during consultation to provide immediate valuable information to complement clinical data from history, physical examination, and laboratory data,” they added.

The study retrospectively examined a prospective, observational cohort of 559 patients with psoriasis alone or psoriasis and psoriatic arthritis enrolled in the University of Toronto Psoriatic Disease Program. The investigators evaluated five ultrasound measures of atherosclerosis, including total plaque area (TPA), mean carotid intima-media thickness (cIMT), maximal cIMT, plaque category, and TPA category. Then they analyzed the risk relationship with major cardiovascular events (CVEs) classified as myocardial infarction, unstable angina, ischemic stroke, revascularization procedures, or cardiovascular-related death. Minor CVEs included stable angina, exacerbation of congestive heart failure, and transient ischemic attack over a mean follow-up close to 4 years.

The mean baseline TPA was 0.18 cm² and mean cIMT was 639 mcm. Most patients had plaques, including 27.0% with unilateral and 31.5% with bilateral plaques.

The rate of a first CVE during the study period was 1.11 per 100 patient-years, and the rate of a first major CVE was 0.91 per 100 patient-years. The risk of each was significantly related to a higher baseline burden of atherosclerosis.

A multivariate analysis determined that increased TPA at baseline increased the risk of an event by nearly 200% (hazard ratio, 2.85). Mean cIMT was not an independent predictor in the final analysis, “suggesting that TPA is a stronger predictor for CVE than cIMT,” the authors wrote.

Finally, they examined the predictive value of atherosclerosis alone, as well as combined with the Framingham risk score. The 5-year model indicated that the bivariate model was slightly more accurate than the Framingham score alone (area under the curve, 0.84 vs. 0.81), although this was not a significant difference. The predictive value of the Framingham risk score plus maximal cIMT, mean cIMT, or TPA all significantly improved when they were calculated using only high-risk patients (those above the treatment threshold for dyslipidemia).

“To the best of our knowledge this is the first study to assess the utility of various measures of carotid atherosclerosis to predict CVE in patients with psoriasis and PsA [psoriatic arthritis]. ... Combining vascular imaging data with clinical and laboratory measures of traditional cardiovascular risk factors could improve accuracy of cardiovascular risk stratification in patients with psoriatic disease and facilitate earlier initiation of appropriate treatment to reduce CVE in this population,” the investigators wrote.

The study was supported in part by a Young Investigator Operating Grant from the Arthritis Society. Dr. Sobchak had no financial disclosures.

[email protected]

SOURCE: Sobchak C et al. Arthritis Rheumatol. 2019 Jun 5. doi: 10.1002/art.40925.

Subclinical atherosclerosis in the carotid arteries as measured by ultrasound appears to nearly triple the risk of a first cardiovascular event among patients with psoriatic disease, according to findings from a retrospective study.

pixologicstudio/Thinkstock.com

When added to the Framingham risk score, the measurement significantly improved its predictive ability, Curtis Sobchak, MD, and colleagues wrote in Arthritis & Rheumatology.

The findings indicate that carotid ultrasound could be a useful addition to cardiovascular risk stratification among these patients.

“Traditional algorithms do not consider other factors that may contribute to increased cardiovascular risk in rheumatic disease patients and tend to underestimate cardiovascular risk,” wrote Dr. Sobchak of the University of Toronto and coauthors.

“The advantage of ultrasound over other modalities for vascular imaging includes lack of radiation, low cost of the examination, and its widespread use in rheumatology for joint evaluation. Thus, this assessment could potentially be performed ‘at the bedside’ during consultation to provide immediate valuable information to complement clinical data from history, physical examination, and laboratory data,” they added.

The study retrospectively examined a prospective, observational cohort of 559 patients with psoriasis alone or psoriasis and psoriatic arthritis enrolled in the University of Toronto Psoriatic Disease Program. The investigators evaluated five ultrasound measures of atherosclerosis, including total plaque area (TPA), mean carotid intima-media thickness (cIMT), maximal cIMT, plaque category, and TPA category. Then they analyzed the risk relationship with major cardiovascular events (CVEs) classified as myocardial infarction, unstable angina, ischemic stroke, revascularization procedures, or cardiovascular-related death. Minor CVEs included stable angina, exacerbation of congestive heart failure, and transient ischemic attack over a mean follow-up close to 4 years.

The mean baseline TPA was 0.18 cm² and mean cIMT was 639 mcm. Most patients had plaques, including 27.0% with unilateral and 31.5% with bilateral plaques.

The rate of a first CVE during the study period was 1.11 per 100 patient-years, and the rate of a first major CVE was 0.91 per 100 patient-years. The risk of each was significantly related to a higher baseline burden of atherosclerosis.

A multivariate analysis determined that increased TPA at baseline increased the risk of an event by nearly 200% (hazard ratio, 2.85). Mean cIMT was not an independent predictor in the final analysis, “suggesting that TPA is a stronger predictor for CVE than cIMT,” the authors wrote.

Finally, they examined the predictive value of atherosclerosis alone, as well as combined with the Framingham risk score. The 5-year model indicated that the bivariate model was slightly more accurate than the Framingham score alone (area under the curve, 0.84 vs. 0.81), although this was not a significant difference. The predictive value of the Framingham risk score plus maximal cIMT, mean cIMT, or TPA all significantly improved when they were calculated using only high-risk patients (those above the treatment threshold for dyslipidemia).

“To the best of our knowledge this is the first study to assess the utility of various measures of carotid atherosclerosis to predict CVE in patients with psoriasis and PsA [psoriatic arthritis]. ... Combining vascular imaging data with clinical and laboratory measures of traditional cardiovascular risk factors could improve accuracy of cardiovascular risk stratification in patients with psoriatic disease and facilitate earlier initiation of appropriate treatment to reduce CVE in this population,” the investigators wrote.

The study was supported in part by a Young Investigator Operating Grant from the Arthritis Society. Dr. Sobchak had no financial disclosures.

[email protected]

SOURCE: Sobchak C et al. Arthritis Rheumatol. 2019 Jun 5. doi: 10.1002/art.40925.