urotensin elicited postural hypotension in rats anaesthetized with pentobarbitone.6 the increase in heart rate produced by urotensin was not affected by phenoxybenzamine , but was abolished by propranolol or ganglion blocking agents ( mecamylamine or hexamethonium ) .7 it is concluded that urotensin elicits hypotension in the rat by a direct dilatory action on the resistance vessels causing a simultaneous reflex tachycardia .
C0033497
propranolol
C0020649
hypotension