Cerebral vascular smooth muscle cell (VSMC)

Cerebral vascular smooth muscle cells (VSMCs) are specialized contractile cells that envelope cerebral arteries and arterioles, regulating blood vessel diameter and thus cerebral blood flow. They respond to chemical mediators (e.g., neurotransmitters, hormones), mechanical stimuli, and changes in local metabolic demand by contracting or relaxing, playing a central role in the maintenance of adequate brain perfusion and blood-brain barrier integrity. VSMCs express a variety of receptors (including adrenergic, angiotensin, and endothelin receptors), ion channels, and adhesion molecules, making them responsive to diverse regulatory pathways. Dysfunction or maladaptive phenotypic switching of VSMCs is implicated in multiple cerebrovascular and neurodegenerative diseases.

Other names

Vascular smooth muscle cell (of cerebral blood vessels)Cerebral VSMCSmooth muscle cell (brain vasculature)

Inhibition of calcium influx (vasodilation via L-type calcium channel blockade). Adrenergic receptor antagonism or agonism (modulating contraction/relaxation). Modulation of RAS (reducing vasoconstriction by angiotensin II). NO pathway activation (vasodilation via increased NO).