Abstract:
BACKGROUND:Major prevention trials for Alzheimer's disease (AD) are now focusing on multidomain lifestyle interventions. However, the exact combination of behavioral factors related to AD pathology remains unclear. In 2 cohorts of cognitively unimpaired individuals at risk of AD, we examined which combinations of personality traits, neuropsychiatric symptoms, and cognitive lifestyle (years of education or lifetime cognitive activity) related to the pathological hallmarks of AD, amyloid-β, and tau deposits. METHODS:A total of 115 older adults with a parental or multiple-sibling family history of sporadic AD (PREVENT-AD [PRe-symptomatic EValuation of Experimental or Novel Treatments for AD] cohort) underwent amyloid and tau positron emission tomography and answered several questionnaires related to behavioral attributes. Separately, we studied 117 mutation carriers from the DIAN (Dominant Inherited Alzheimer Network) study group cohort with amyloid positron emission tomography and behavioral data. Using partial least squares analysis, we identified latent variables relating amyloid or tau pathology with combinations of personality traits, neuropsychiatric symptoms, and cognitive lifestyle. RESULTS:In PREVENT-AD, lower neuroticism, neuropsychiatric burden, and higher education were associated with less amyloid deposition (p = .014). Lower neuroticism and neuropsychiatric features, along with higher measures of openness and extraversion, were related to less tau deposition (p = .006). In DIAN, lower neuropsychiatric burden and higher education were also associated with less amyloid (p = .005). The combination of these factors accounted for up to 14% of AD pathology. CONCLUSIONS:In the preclinical phase of both sporadic and autosomal dominant AD, multiple behavioral features were associated with AD pathology. These results may suggest potential pathways by which multidomain interventions might help delay AD onset or progression.
journal_name
Biol Psychiatryjournal_title
Biological psychiatryauthors
Pichet Binette A,Vachon-Presseau É,Morris J,Bateman R,Benzinger T,Collins DL,Poirier J,Breitner JCS,Villeneuve S,Dominantly Inherited Alzheimer Network (DIAN).,PREVENT-AD Research Group.doi
10.1016/j.biopsych.2020.01.023subject
Has Abstractpub_date
2020-02-06 00:00:00eissn
0006-3223issn
1873-2402pii
S0006-3223(20)30058-5pub_type
杂志文章abstract::There is increasing evidence of a deficit or disturbance of neurons in the brains of schizophrenic patients--evidence that particularly implicates the frontal or temporal lobes. As yet there is no direct neurochemical correlate of the transmitter systems involved, although changes in some neurotransmitters in the temp...
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