Year: 2026
Type: article
Study design: Observational Study
Abstract: INTRODUCTION: Cerebrovascular dysfunction may contribute to Alzheimer's disease (AD) pathogenesis. We examined how novel cerebral hemodynamic markers relate to neuroimaging phenotypes associated with AD dementia in cognitively impaired and unimpaired older adults. METHODS: fluctuations to transcranial doppler-derived blood velocity and near infrared spectroscopy-derived cortical tissue oxygenation. Linear regressions related these hemodynamic indices to hippocampal volume, WMH volume, cortical thickness in an AD-signature region, and brain amyloid burden measured by PET. RESULTS: Higher hemodynamic indices, indicating proximity to normal cerebrovascular function correlated with neuroimaging phenotypes typically associated with better cognitive status: greater hippocampal volume and lower amyloid burden. DISCUSSION: Our findings provide further support for the role of cerebrovascular dysfunction in AD pathogenesis and for the potential clinical utility of model-based indices of cerebral hemodynamics.
Source: Alzheimer s & Dementia
DOI: 10.1002/alz.71146
Language: English
Subfield: Psychiatry and Mental health
Field: Medicine
Domain: Health Sciences
Open Access status: hybrid
Estimated APC paid: $4,200
OpenAlex ID: W7128811951