EFFECT OF THE ANGIOTENSIN II ANTAGONIST SARALASIN ON PLASMA ALDOSTERONE CONCENTRATION AND ON BLOOD PRESSURE BEFORE AND DURING SODIUM DEPLETION IN NORMAL SUBJECTS

Abstract
The effect of the angiotensin II antagonist saralasin on plasma aldosterone, plasma angiotensin II and blood pressure was studied in 6 normal supine subjects both before and during Na depletion. Before Na depletion, infusion of saralasin produced no consistent changes; during Na depletion, infusion of the angiotensin antagonist caused a fall in plasma aldosterone and an increase in plasma angiotensin II in each subject. Angiotensin II plays a major part in stimulating aldosterone secretion during Na depletion in man.