Insulin stimulation tests in pituitary dependent Cushing's syndrome after complete adrenalectomy. 1977

R J Croughs, and H Timmermans, and A C Vingerhoeds, and A Vermeulen, and A Smals, and P W Kloppenborg, and J C Meyer

The present study shows that in a group of 6 euadrenal patients, previously treated by complete adrenalectomy for pituitary dependent Cushing's syndrome, the stress stimulus of insulin induced hypoglycaemia is followed by a plasma ACTH response which is of similar magnitude as the response obtained with lysin-vasopressin. Both observations indicate that the central nervous system-pituitary axis is basically normal in pituitary dependent Cushing's syndrome as assessed by insulin induced hypoglycaemia. It is concluded that non-responsiveness of the pituitary-adrenocortical system to insulin induced hypoglycaemia in untreated patients with pituitary dependent Cushing's syndrome does not represent a fundamental defect of the stress mechanism, but is due to hypercorticism per se.

UI MeSH Term Description Entries
D007328 Insulin A 51-amino acid pancreatic hormone that plays a major role in the regulation of glucose metabolism, directly by suppressing endogenous glucose production (GLYCOGENOLYSIS; GLUCONEOGENESIS) and indirectly by suppressing GLUCAGON secretion and LIPOLYSIS. Native insulin is a globular protein comprised of a zinc-coordinated hexamer. Each insulin monomer containing two chains, A (21 residues) and B (30 residues), linked by two disulfide bonds. Insulin is used as a drug to control insulin-dependent diabetes mellitus (DIABETES MELLITUS, TYPE 1). Iletin,Insulin A Chain,Insulin B Chain,Insulin, Regular,Novolin,Sodium Insulin,Soluble Insulin,Chain, Insulin B,Insulin, Sodium,Insulin, Soluble,Regular Insulin
D008236 Lypressin The porcine antidiuretic hormone (VASOPRESSINS). It is a cyclic nonapeptide that differs from ARG-VASOPRESSIN by one amino acid, containing a LYSINE at residue 8 instead of an ARGININE. Lys-vasopressin is used to treat DIABETES INSIPIDUS or to improve vasomotor tone and BLOOD PRESSURE. Lysine Vasopressin,Vasopressin, Lysine,8-Lysine Vasopressin,Diapid,Lys-Vasopressin,Lysyl Vasopressin,Postacton,8 Lysine Vasopressin,Lys Vasopressin,Vasopressin, 8-Lysine,Vasopressin, Lysyl
D001786 Blood Glucose Glucose in blood. Blood Sugar,Glucose, Blood,Sugar, Blood
D003480 Cushing Syndrome A condition caused by prolonged exposure to excess levels of cortisol (HYDROCORTISONE) or other GLUCOCORTICOIDS from endogenous or exogenous sources. It is characterized by upper body OBESITY; OSTEOPOROSIS; HYPERTENSION; DIABETES MELLITUS; HIRSUTISM; AMENORRHEA; and excess body fluid. Endogenous Cushing syndrome or spontaneous hypercortisolism is divided into two groups, those due to an excess of ADRENOCORTICOTROPIN and those that are ACTH-independent. Cushing's Syndrome,Hypercortisolism,Syndrome, Cushing,Syndrome, Cushing's
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000315 Adrenalectomy Excision of one or both adrenal glands. (From Dorland, 28th ed) Adrenalectomies
D000324 Adrenocorticotropic Hormone An anterior pituitary hormone that stimulates the ADRENAL CORTEX and its production of CORTICOSTEROIDS. ACTH is a 39-amino acid polypeptide of which the N-terminal 24-amino acid segment is identical in all species and contains the adrenocorticotrophic activity. Upon further tissue-specific processing, ACTH can yield ALPHA-MSH and corticotrophin-like intermediate lobe peptide (CLIP). ACTH,Adrenocorticotropin,Corticotropin,1-39 ACTH,ACTH (1-39),Adrenocorticotrophic Hormone,Corticotrophin,Corticotrophin (1-39),Corticotropin (1-39),Hormone, Adrenocorticotrophic,Hormone, Adrenocorticotropic

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