Authors: Noboru Fukuda M Soma A Kubo M Kunimoto Y Watanabe Y Izumi K Kanmatsuse
Publish Date: 2014/04/02
Volume: 20, Issue: 1, Pages: 13-17
Abstract
Dibutyryl cyclic AMP DBcAMP directly stimulates the release of renin from the juxtaglomerular JG cells in vitro We investigated the effect of DBcAMP on plasma renin activity PRA in 6 normal men and in 8 patients with primary aldosteronism PA A 20min infusion of 033 mg/kg/min of DBcAMP significantly increased PRA in normal men but had little effect on PRA in patients with PA Infusion of DBcAMP significantly reduced the blood pressure and the levels of serum sodium and potassium in normal men and the patients with PA Infusion of DBcAMP significantly increased urine volume in normal men but not in patients with PA Urinary excretion of sodium increased in both groups after the infusion of DBcAMP Thus DBcAMP did not stimulate renin release in patients with PA suggesting that the chronic excess production of aldosterone suppresses the release of renin from JG cells
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