Biomaterial Database

Inhibitory effect of serotonin antagonists on growth hormone release in acromegalic patients. 1976

J M Feldman, and J W Plonk, and C H Bivens

We evaluated the effect of the serotonin antagonists cyproheptadine (Cypro) and methysergide (Methy) on growth hormone secretion in six patients with acromegaly. Two days administration of Cypro decreased the plasma GH concentration during oral glucose tolerance tests in four of the six patients evaluated; 2 days administration of Methy reduced the plasma GH levels of only one of the four patients evaluated. The one patient whose plasma GH concentration was lowered by Methy, did not have a decrease in plasma GH concentration after Cypro administration. Acromegalic patients have normal serum serotonin concentration and normal 5-hydroxyindoleacetic acid excretion. If Cypro lowers plasma GH by antagonizing serotonin, our data would suggest that serotoninergic neuronal pathways are important in the regulation of pituitary GH secretion in some patients with acromegaly.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D008784	Methysergide	An ergot derivative that is a congener of LYSERGIC ACID DIETHYLAMIDE. It antagonizes the effects of serotonin in blood vessels and gastrointestinal smooth muscle, but has few of the properties of other ergot alkaloids. Methysergide is used prophylactically in migraine and other vascular headaches and to antagonize serotonin in the carcinoid syndrome.	Dimethylergometrin,Methylmethylergonovine,Deseril,Desril,Désernil-Sandoz,Methysergide Dimaleate,Methysergide Maleate,Sansert,UML-491,Dimaleate, Methysergide,Désernil Sandoz,Maleate, Methysergide,UML 491,UML491
D008875	Middle Aged	An adult aged 45 - 64 years.	Middle Age
D002986	Clinical Trials as Topic	Works about pre-planned studies of the safety, efficacy, or optimum dosage schedule (if appropriate) of one or more diagnostic, therapeutic, or prophylactic drugs, devices, or techniques selected according to predetermined criteria of eligibility and observed for predefined evidence of favorable and unfavorable effects. This concept includes clinical trials conducted both in the U.S. and in other countries.	Clinical Trial as Topic
D003533	Cyproheptadine	A serotonin antagonist and a histamine H1 blocker used as antipruritic, appetite stimulant, antiallergic, and for the post-gastrectomy dumping syndrome, etc.	Antergan,Dihexazin,Periactin,Peritol,Viternum
D003864	Depression, Chemical	The decrease in a measurable parameter of a PHYSIOLOGICAL PROCESS, including cellular, microbial, and plant; immunological, cardiovascular, respiratory, reproductive, urinary, digestive, neural, musculoskeletal, ocular, and skin physiological processes; or METABOLIC PROCESS, including enzymatic and other pharmacological processes, by a drug or other chemical.	Chemical Depression,Chemical Depressions,Depressions, Chemical
D005260	Female		Females
D005951	Glucose Tolerance Test	A test to determine the ability of an individual to maintain HOMEOSTASIS of BLOOD GLUCOSE. It includes measuring blood glucose levels in a fasting state, and at prescribed intervals before and after oral glucose intake (75 or 100 g) or intravenous infusion (0.5 g/kg).	Intravenous Glucose Tolerance,Intravenous Glucose Tolerance Test,OGTT,Oral Glucose Tolerance,Oral Glucose Tolerance Test,Glucose Tolerance Tests,Glucose Tolerance, Oral
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000172	Acromegaly	A condition caused by prolonged exposure to excessive HUMAN GROWTH HORMONE in adults. It is characterized by bony enlargement of the FACE; lower jaw (PROGNATHISM); hands; FEET; HEAD; and THORAX. The most common etiology is a GROWTH HORMONE-SECRETING PITUITARY ADENOMA. (From Joynt, Clinical Neurology, 1992, Ch36, pp79-80)	Inappropriate Growth Hormone Secretion Syndrome (Acromegaly),Somatotropin Hypersecretion Syndrome (Acromegaly),Inappropriate GH Secretion Syndrome (Acromegaly),Hypersecretion Syndrome, Somatotropin (Acromegaly),Hypersecretion Syndromes, Somatotropin (Acromegaly),Somatotropin Hypersecretion Syndromes (Acromegaly),Syndrome, Somatotropin Hypersecretion (Acromegaly),Syndromes, Somatotropin Hypersecretion (Acromegaly)