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  • Title: Renin-aldosterone axis in ethanol intoxication: effect of A II infusion.
    Author: Nieminen MM, Linkola J, Fyhrquist F, Tikkanen I, Forslund T.
    Journal: Int J Clin Pharmacol Ther Toxicol; 1985 Mar; 23(3):137-40. PubMed ID: 2987138.
    Abstract:
    Plasma renin activity (PRA) is increased while plasma aldosterone is not, during moderate ethanol intoxication. To elucidate mechanisms behind this dissociation of renin-aldosterone nexus, six healthy males were given angiotensin II (4 ng kg-1 min-1) by i.v. infusion following ingestion of ethanol (1.2 g kg-1 body weight). Prior to angiotensin II (A II) infusion, PRA rose and plasma aldosterone declined. A II infusion caused a roughly 3-fold increase of plasma aldosterone both in ethanol intoxication and in control experiments, and a transient suppression of PRA. Plasma renin substrate, cortisol, and angiotensin converting enzyme (ACE) remained unchanged. The decrease of serum potassium or the rise of Na+/K+ ratio in ethanol intoxication may explain the failure of the adrenal cortex to respond with aldosterone release to endogenous angiotensin II. However, the pressor dose of A II infused obviously overcame the blunting effect of ethanol on aldosterone release previously reported by us. Blood pressure, both diastolic and systolic, increased similarly during ethanol and control experiments in response to A II infusion, except in one subject, who during ethanol intoxication experienced a paradoxical fall in blood pressure while reacting normally to A II infusion without ethanol.
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