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Introduction: Understanding how a research sample compares to the population from which it is drawn can help inform future recruitment planning. We compared the Wisconsin Alzheimer's Disease Research Center (WADRC) participant sample to the Wisconsin state population (WI-pop) on key demographic, social exposome, and vascular risk measures.
Methods: The WADRC sample included 930 participants.
Plasma biomarkers of amyloid, tau, astrogliosis, and axonal injury in a mixed memory clinic cohort.
Alzheimers Dement (Amst)
January 2025
Introduction: Studies have shown that blood biomarkers can differentiate dementia disorders. However, the diagnosis of dementia still relies primarily on cerebrospinal fluid and imaging modalities. The new disease-modifying treatments call for more widely applicable biomarkers.
View Article and Find Full Text PDFIntroduction: Melanopsin is a photopigment with roles in mediating sleep and circadian-related processes, which are often disrupted in Alzheimer's disease (AD). Melanopsin also impacts cognition and synaptogenesis. This study investigated the associations between melanopsin genetic variants, sleep, and markers of brain health.
View Article and Find Full Text PDFAmyloid-related changes in fluency in patients with subjective cognitive decline.
Alzheimers Dement (Amst)
January 2025
Alzheimer Center Amsterdam, Neurology Amsterdam University Medical Center Amsterdam the Netherlands.
Introduction: We examined semantic and phonemic fluency in individuals with subjective cognitive decline (SCD) in relation to amyloid status and clinical progression.
Methods: A total of 490 individuals with SCD (62 ± 8 years, 42% female, 28% amyloid-positive, 17% clinical progression) completed annual fluency assessments (mean ± SD follow-up 4.3 ± 2.
Acoustic speech features are associated with late-life depression and apathy symptoms: Preliminary findings.
Alzheimers Dement (Amst)
January 2025
Department of Psychiatry Rambam Health Care Campus Haifa Israel.
Background: Late-life depression (LLD) is a heterogenous disorder related to cognitive decline and neurodegenerative processes, raising a need for the development of novel biomarkers. We sought to provide preliminary evidence for acoustic speech signatures sensitive to LLD and their relationship to depressive dimensions.
Methods: Forty patients (24 female, aged 65-82 years) were assessed with the Geriatric Depression Scale (GDS).
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