THE ACTION OF CORTICOSTEROIDS ON THE RENAL EXCRETION AND UTILIZATION OF CITRIC ACID

Abstract
During treatment with steroid hormones che tubular reabsorption of citric acid (cit.) increases, and the endogenous citric acid clearance is reduced. This is attributed to increased diffusion of citric acid from the tubular lumen to the renal tissue. With simultaneous administration of corticosteroids and anabolic steroids the tubular reabsorption of citric acid becomes normal. Steroid hormones block the renal synthesis of cit. and the renal utilization of cit. becomes identical with the amount of cit. reabsorbed in the tubules. Blockade of the synthesis of cit. is attributed to the inhibitory effect of steroid hormones on enzyme systems.

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