SELECTIVE INHIBITION BY CORTISONE OF ADRENAL CORTICAL INCORPORATION OF C14FROM LABELLED BACTERIAL POLYSACCHARIDE1,2

Abstract
In the guinea pig, the highest level of C14 derived from a labeled bacterial polysaccharide is in the adrenal cortex. The chemical nature of the C14 uptake by the adrenal is obscure but may be a significant index of "anti-inflammatory" or "glucocorticoid" activity of steroids. The adrenal incorporation of C14 is markedly depressed by cortisone, slightly depressed by 17-hydroxy-11-desoxycorticosterone but unaltered by corticosterone, 11-desoxycorticosterone, progesterone, or pregnenolone. The action of cortisone on the adrenal occurs in pre-treated animals and is prevented by concomitant administration of ACTH.