Summary: Eight patients were treated with two 80-mg.doses of methylprednisolone acetate (Depo-Medrone), given at an interval of two weeks. Pituitary-adrenal function was assessed before, during, and after treatment.Plasma cortisol levels were depressed maximally 72 hours after each injection of methylprednisolone acetate, and then gradually returned to normal. The adrenocortical response to administered corticotrophin was similarly affected; in seven patients normal values were again recorded three weeks after the second injection of methylprednisolone acetate. One patient whose adrenal function had returned to normal still showed some degree of pituitary suppression eight weeks after his second injection. Several side-effects were noted, and clinically the patients fared less well than a larger series studied during the previous year.
IntroductionMethylprednisolone acetate (Depo-Medrone), a slow-release steroid for injection, is used in the treatment of allergic and other disorders but no information is available to indicate the effect of this treatment on the hypothalamicpituitary-adrenal axis. It seemed desirable, therefore, to assess hypothalamic-pituitary-adrenal function in a group of patients receiving methylprednisolone acetate in the dosage used for a recent trial of hay-fever treatment (Ganderton, Brostoff, and Frankland, 1969), when two 80-mg. injections of methylprednisolone acetate were given at an interval of two weeks. The effect on the resting plasma cortisol level, on the response of the adrenal gland to synthetic adrenocorticotrophic hormone (Synacthen), and on the plasma cortisol response to the stress of insulin-induced hypoglycaemia was studied.