[The micro- and macrovascular reactivity of the arterial bed in renovascular hypertension in rats].

In rats with experimental hypertension, mesenteric artery revealed a hypersensitivity to noradrenaline whereas aorta did not differ from normal values of this parameter. The sensitivity of femoral artery was lowered. The microarterioles of hypertensive animals manifested a lower sensitivity to noradrenaline as well. This data suggests that arterial vessels manifest a regional heterogeneity of their functional properties in chronic birenal renovascular hypertension.