An Integrated View on Vascular Dysfunction in Alzheimer's Disease

Area of Science:

• Neuroscience
• Vascular Biology
• Pathology

Background:

• Cerebrovascular disease frequently co-occurs with Alzheimer's disease (AD).
• Vascular dysfunction may play a causal role in AD etiology, preceding or interacting with AD neuropathology.
• The cerebral vasculature is a convergence point for pathogenic processes contributing to cognitive decline in AD.

Purpose of the Study:

• To provide an integrated perspective on cerebrovascular dysfunction in Alzheimer's disease.
• To highlight the complex interactions between vascular pathology and AD neuropathology.
• To emphasize the role of the cerebral vasculature in AD pathogenesis and cognitive impairment.

Main Methods:

• Review of accumulating evidence on cerebrovascular changes in AD.
• Analysis of cellular, morphological, and structural alterations in the cerebral vasculature.
• Integration of findings on systemic vascular abnormalities and their impact on the brain.

Main Results:

• Cerebral vasculature in AD exhibits significant cellular, morphological, and structural changes.
• Vascular stiffening, dysregulated hemostasis, and chronic inflammation impair brain blood flow and integrity.
• Systemic vascular issues, exacerbated by aging and cardiovascular diseases, drive cerebral vascular changes in AD.

Conclusions:

• The cerebral vasculature is a critical site where multiple pathological processes converge in AD.
• Understanding the molecular mechanisms of vascular dysfunction is key for AD prevention and therapy.
• Biomarkers for vascular dysfunction may offer future therapeutic and diagnostic avenues for AD.