Biomaterial Database

[Pancreatic exocrine and endocrine functions stimulated with secretin and thyrotropin-releasing hormone in patients with hyperparathyroidism]. 1992

K Yamagishi

Second Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan.

This study was designed to investigate pancreatic exocrine and endocrine secretion stimulated with secretin and thyrotropin-releasing hormone (TRH) in hyperparathyroidism. Pancreatic exocrine secretion during 30 min stimulated by constant secretin infusion of 1U/kg/hour was significantly increased in patients with secondary hyperparathyroidism compared with controls and patients with primary hyperparathyroidism. Intravenous administration of TRH at a dose of 20 micrograms/kg/hour, superimposed on secretin, produced a significant decrease of pancreatic exocrine secretion in both primary and secondary hyperparathyroidism but not in control. Serum insulin, glucagon and secretin levels were significantly higher in the subjects of both primary and secondary hyperparathyroidism than those of controls. Serum glucagon and secretin levels were significantly higher in secondary hyperparathyroidism than primary hyperparathyroidism. The pancreatic endocrine secretion was not influenced by TRH administration. Pancreatic exocrine secretion was not changed by parathyroidectomy in patients with primary hyperparathyroidism. As for endocrine secretion, however, only serum secretin level decreased to the level before parathyroidectomy. In this study, it was speculated that the increase of pancreatic secretion in secondary hyperparathyroidism may be due to hypersecretinemia, and the decrease of exocrine secretion by TRH in primary and secondary hyperparathyroidism may be resulted from the direct effect of TRH on the pancreatic acinar cells.

UI	MeSH Term	Description	Entries
D006961	Hyperparathyroidism	A condition of abnormally elevated output of PARATHYROID HORMONE (or PTH) triggering responses that increase blood CALCIUM. It is characterized by HYPERCALCEMIA and BONE RESORPTION, eventually leading to bone diseases. PRIMARY HYPERPARATHYROIDISM is caused by parathyroid HYPERPLASIA or PARATHYROID NEOPLASMS. SECONDARY HYPERPARATHYROIDISM is increased PTH secretion in response to HYPOCALCEMIA, usually caused by chronic KIDNEY DISEASES.
D006962	Hyperparathyroidism, Secondary	Abnormally elevated PARATHYROID HORMONE secretion as a response to HYPOCALCEMIA. It is caused by chronic KIDNEY FAILURE or other abnormalities in the controls of bone and mineral metabolism, leading to various BONE DISEASES, such as RENAL OSTEODYSTROPHY.	Secondary Hyperparathyroidism,Hyperparathyroidisms, Secondary,Secondary Hyperparathyroidisms
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
D007515	Islets of Langerhans	Irregular microscopic structures consisting of cords of endocrine cells that are scattered throughout the PANCREAS among the exocrine acini. Each islet is surrounded by connective tissue fibers and penetrated by a network of capillaries. There are four major cell types. The most abundant beta cells (50-80%) secrete INSULIN. Alpha cells (5-20%) secrete GLUCAGON. PP cells (10-35%) secrete PANCREATIC POLYPEPTIDE. Delta cells (~5%) secrete SOMATOSTATIN.	Islands of Langerhans,Islet Cells,Nesidioblasts,Pancreas, Endocrine,Pancreatic Islets,Cell, Islet,Cells, Islet,Endocrine Pancreas,Islet Cell,Islet, Pancreatic,Islets, Pancreatic,Langerhans Islands,Langerhans Islets,Nesidioblast,Pancreatic Islet
D008297	Male		Males
D008875	Middle Aged	An adult aged 45 - 64 years.	Middle Age
D010179	Pancreas	A nodular organ in the ABDOMEN that contains a mixture of ENDOCRINE GLANDS and EXOCRINE GLANDS. The small endocrine portion consists of the ISLETS OF LANGERHANS secreting a number of hormones into the blood stream. The large exocrine portion (EXOCRINE PANCREAS) is a compound acinar gland that secretes several digestive enzymes into the pancreatic ductal system that empties into the DUODENUM.
D010189	Pancreatic Juice	The fluid containing digestive enzymes secreted by the pancreas in response to food in the duodenum.	Juice, Pancreatic,Juices, Pancreatic,Pancreatic Juices
D005260	Female		Females
D005934	Glucagon	A 29-amino acid pancreatic peptide derived from proglucagon which is also the precursor of intestinal GLUCAGON-LIKE PEPTIDES. Glucagon is secreted by PANCREATIC ALPHA CELLS and plays an important role in regulation of BLOOD GLUCOSE concentration, ketone metabolism, and several other biochemical and physiological processes. (From Gilman et al., Goodman and Gilman's The Pharmacological Basis of Therapeutics, 9th ed, p1511)	Glucagon (1-29),Glukagon,HG-Factor,Hyperglycemic-Glycogenolytic Factor,Proglucagon (33-61),HG Factor,Hyperglycemic Glycogenolytic Factor