Effect of an angiotensin II analogue upon blood pressure, plasma renin concentration and plasma aldosterone in hypertensive patients.

Succinamyl-arg-val-tyr-val-his-pro-phenylglycine acetate (succinamyl1-val5-phenylglycine acetate3-A II), an analogue of angiotensin II, has a pressor effect upon patients suffering from primary and secondary hypertension regardless of prevailing plasma renin concentration. It stimulates the release of aldosterone, whereas plasma renin concentration is not influenced. It is concluded, that this new analogue is, as far as its effect upon blood pressure and release of aldosterone in man is concerned, an agonist of angiotensin II.