Biomaterial Database

Inhibition of somatostatin on glucose-induced release of gastric inhibitory polypeptide in rats. 1987

L T Ho, and H F Pu, and W J Sheu, and W C Wang, and P S Wang

Department of Physiology, National Yang-Ming Medical College, Taipei, Taiwan, Republic of China.

The effect of somatostatin on glucoseinduced secretion of insulin and gastric inhibitory polypeptide (GIP) in rats was examined. Anesthetized male rats were catheterized via the right carotid artery before gastric infusion of 2 ml of 40% glucose through a syringe pump over 3 min. Ten micrograms somatostatin dissolved in 0.5 ml saline was injected intraperitoneally 10 min before oral glucose administration. Rats receiving 0.5 ml saline were used as controls. Blood samples were collected at -10, 0, 10, 20, 30, 45, 60, and 90 min after glucose infusion. Concentrations of GIP and insulin in rat plasma samples were measured by radioimmunoassay. The level of plasma glucose was determined by YSI glucose analyzer. The results revealed that the rise of plasma insulin and GIP after the glucose load was abolished by a preinjection of somatostatin. It is concluded that somatostatin at 10 micrograms inhibits the effects of oral glucose in stimulating the secretion of GIP from the gut, and insulin from the pancreas in normal fasted rats.

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
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
D004064	Digestive System	A group of organs stretching from the MOUTH to the ANUS, serving to breakdown foods, assimilate nutrients, and eliminate waste. In humans, the digestive system includes the GASTROINTESTINAL TRACT and the accessory glands (LIVER; BILIARY TRACT; PANCREAS).	Ailmentary System,Alimentary System
D005749	Gastric Inhibitory Polypeptide	A gastrointestinal peptide hormone of about 43-amino acids. It is found to be a potent stimulator of INSULIN secretion and a relatively poor inhibitor of GASTRIC ACID secretion.	Glucose-Dependent Insulinotropic Peptide,Gastric-Inhibitory Polypeptide,Glucose Dependent Insulinotropic Peptide,Glucose-Dependent Insulin-Releasing Peptide,Glucose Dependent Insulin Releasing Peptide,Inhibitory Polypeptide, Gastric,Insulin-Releasing Peptide, Glucose-Dependent,Insulinotropic Peptide, Glucose-Dependent,Peptide, Glucose-Dependent Insulin-Releasing,Peptide, Glucose-Dependent Insulinotropic,Polypeptide, Gastric Inhibitory,Polypeptide, Gastric-Inhibitory
D005947	Glucose	A primary source of energy for living organisms. It is naturally occurring and is found in fruits and other parts of plants in its free state. It is used therapeutically in fluid and nutrient replacement.	Dextrose,Anhydrous Dextrose,D-Glucose,Glucose Monohydrate,Glucose, (DL)-Isomer,Glucose, (alpha-D)-Isomer,Glucose, (beta-D)-Isomer,D Glucose,Dextrose, Anhydrous,Monohydrate, Glucose
D000078790	Insulin Secretion	Production and release of insulin from PANCREATIC BETA CELLS that primarily occurs in response to elevated BLOOD GLUCOSE levels.	Secretion, Insulin
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D013004	Somatostatin	A 14-amino acid peptide named for its ability to inhibit pituitary GROWTH HORMONE release, also called somatotropin release-inhibiting factor. It is expressed in the central and peripheral nervous systems, the gut, and other organs. SRIF can also inhibit the release of THYROID-STIMULATING HORMONE; PROLACTIN; INSULIN; and GLUCAGON besides acting as a neurotransmitter and neuromodulator. In a number of species including humans, there is an additional form of somatostatin, SRIF-28 with a 14-amino acid extension at the N-terminal.	Cyclic Somatostatin,Somatostatin-14,Somatotropin Release-Inhibiting Hormone,SRIH-14,Somatofalk,Somatostatin, Cyclic,Somatotropin Release-Inhibiting Factor,Stilamin,Somatostatin 14,Somatotropin Release Inhibiting Factor,Somatotropin Release Inhibiting Hormone
D051381	Rats	The common name for the genus Rattus.	Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus