ArticleThe American journal of geriatric psychiatry : official journal of the American Association for Geriatric Psychiatry2024
Study Partner Report of Apathy in Older Adults is Associated with AD Biomarkers: Findings from the Harvard Aging Brain Study.
Article in The American journal of geriatric psychiatry : official journal of the American Association for Geriatric Psychiatry, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 4 citations in OpenAlex.
- Trajectories of late-life depression: insights from molecular imaging.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026Review
- Multimodal Neuroimaging Mechanisms of Apathy in Alzheimer's Disease: A Narrative Review of Structural, Functional, and Molecular Evidence.International journal of general medicine · 2026Review
- The Relationship of Alzheimer's Disease and Related Dementias Blood-Based Biomarkers and Informant-Reported Neuropsychiatric Symptoms Differs by Informant Type in Older Adults Without Dementia.International journal of geriatric psychiatry · 2025Article
- Mapping the Neuropsychiatric Symptoms in Alzheimer's Disease Using Biomarkers, Cognitive Abilities, and Personality Traits: A Systematic Review.Diagnostics (Basel, Switzerland) · 2025Review
- Apathy and resting state functional connectivity across the Alzheimer's disease continuum.Alzheimer's & dementia (Amsterdam, Netherlands)Article
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Authors and funding
18 authors at 5 institutions in 1 country.
Funding
Abstract
objectivesWe examined relationships between apathy (self and study-partner-reported) and markers of Alzheimer's disease (AD) in older adults.
designThe study utilized a well-characterized sample of participants from the Harvard Aging Brain Study (HABS), a longitudinal cohort study. Participants were cognitively unimpaired without clinically significant neuropsychiatric symptoms at HABS baseline. The dependent variables, apathy evaluation scale-self (AES-S) and informant (AES-I), were administered cross-sectionally between years 6-9 and compared to the independent variables, amyloid and tau PET neuroimaging, from the same year.
settingCommunity-dwelling participants assessed at research visits in an academic medical center.
participantsParticipants (n = 170) completed assessments within 1.5 years of their neuroimaging visit. At the time of apathy assessment, N = 156 were cognitively unimpaired and 14 had progressed to mild cognitive impairment (n = 8) or dementia (n = 6). MEASUREMENTS: We utilized linear regression models to assess cross-sectional associations of AES-S and AES-I with AD PET imaging measures (beta-amyloid (Pittsburgh Compound B) and tau (Flortaucipir)), covarying for age, sex, education, and the time between PET scan-apathy assessment.
resultsAES-I was significantly associated with beta-amyloid and temporal lobe tau, and the associations were retained after further adjusting for depressive symptoms. The associations between AES-S and AD biomarkers were not significant. In an exploratory subgroup analysis of cognitively unimpaired individuals with elevated Aβ, we observed an association between AES-I and inferior temporal tau.
conclusionsStudy-partner-reported, but not self-reported, apathy in older adults is associated with AD pathology, and we observed this relationship starting from the preclinical stage. Our findings highlight the importance of collateral information in capturing AD-related apathy.
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