| Type | MGI:General | Description | at pressures between 30 and 70 mmHg, cerebral arteries develop less myogenic tone than wild-type, indicating attenuated pressure-induced constriction pressure induces a smaller depolarization and smaller arterial wall intracellular calcium elevation in mutant cerebral arteries than in wild-type, resulting in reduced myogenic constriction membrane depolarization induced by 60 mM potassium results in attenuated arterial wall intracellular calcium elevation and constriction in cerebral arteries N-omega-nitro-L-arginine, a nitric oxide synthase inhibitor, does not restore myogenic tone in cerebral arteries, indicating that NOS activation and nitric oxide generation do not significantly contribute to the attenuated myogenic response |