RISE IN PLASMA CONCENTRATION OF ALDOSTERONE DURING LONG-TERM ANGIOTENSIN II SUPPRESSION

in Journal of Endocrinology
Authors:
J. STAESSEN
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P. LIJNEN
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R. FAGARD
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L. J. VERSCHUEREN
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A. AMERY
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The plasma concentration of aldosterone was followed in seven hypertensive patients before and during long-term angiotensin II suppression with the orally active angiotensin-I-converting-enzyme inhibitor, captopril. The plasma concentration of aldosterone decreased initially from 74 to 21 pg/ml (P < 0·05) after 1 month of administration of captopril. Thereafter the plasma concentration of aldosterone began to rise and after 1 year reached a level of 165 pg/ml. During long-term captopril therapy the plasma renin activity remained increased and the plasma angiotensin II concentration suppressed. The mechanism responsible for the late rise of the plasma concentration of aldosterone during long-term angiotensin II suppression with captopril remains to be elucidated. A sizeable and lasting hypotensive effect was observed in all patients.

 

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