Androgens' effects on cerebrovascular function in health and disease

Area of Science:

• Neuroscience
• Endocrinology
• Vascular Biology

Background:

• Androgens directly influence cerebral vasculature, affecting sex differences in cerebrovascular diseases.
• Men face higher risks for stroke and vascular contributions to cognitive impairment and dementia (VCID) than women.
• The cerebral vasculature expresses androgen receptors and metabolizing enzymes, indicating direct androgen action.

Purpose of the Study:

• To explore the complex role of androgens in the cerebral vasculature.
• To understand how androgens contribute to sex differences in cerebrovascular diseases and VCID.
• To investigate the direct and indirect effects of androgens on cerebrovascular health.

Main Methods:

• Review of existing literature on androgen actions on cerebral vasculature.
• Analysis of androgen effects on angiogenesis, vasoconstriction, and blood-brain barrier permeability.
• Examination of the link between androgens and vascular risk factors like hypertension and diabetes.

Main Results:

• Androgen effects on the brain vasculature are complex, with both protective and detrimental outcomes.
• Chronic androgen administration can promote angiogenesis, vasoconstriction, and alter blood-brain barrier permeability.
• Low androgen levels in men are associated with metabolic and cardiovascular diseases, increasing stroke and VCID risk.

Conclusions:

• Androgens significantly impact cerebral vasculature, contributing to sex disparities in stroke and VCID.
• Further research into androgen-cerebrovascular interactions is vital for understanding and treating these conditions.
• Androgen's influence on vascular risk factors exacerbates sex differences in cerebrovascular disease.