[Effect of cortisol on the state of adenyl cyclase system in rabbits]

Content of 3',5'-cycloAMP was estimated in rabbit blood plasma and urine; activities of adenylcyclase and phosphodiesterase were determined in liver tissue, adipose tissue and adrenal glands within 5, 24 and 48 hrs after hydrocortisone administration. Concentration of 3',5'-cycloAMP was found to be increased 4-6-fold in plasma and urine after the hormone administration. Cortisol was shown to increase also the activity of adenylcyclase and phosphodiesterase in liver tissue within 5 hrs and in adipose tissue--within 24 hrs and 48 hrs after the administration. In adrenal glands hydrocortisone caused an inhibitory effect on the adenylcyclase activity at early steps of the experiment.