Glucose utilization in islets of hyperglycemic rat models with impaired glucose-induced insulin secretion. 1987

R M Colella, and J M May, and S Bonner-Weir, and J L Leahy, and G C Weir

Under most experimental conditions islet glucose metabolism is well-correlated with short-term glucose-induced insulin secretion. Two hyperglycemic rat models (neonatal streptozotocin and glucose infusion) have been previously found to have markedly impaired insulin responses to glucose, and the glucose utilization of islets isolated from these models was therefore studied to see if reduced glucose metabolism might be related to the secretory abnormalities. It was found that glucose utilization in the islets of the two models was similar or higher than in comparable control islets. These data suggest that the secretory defect of these models, which is presumably induced by chronic hyperglycemia, is at a step in the secretion process distal to glucose metabolism.

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
D011919 Rats, Inbred Strains Genetically identical individuals developed from brother and sister matings which have been carried out for twenty or more generations or by parent x offspring matings carried out with certain restrictions. This also includes animals with a long history of closed colony breeding. August Rats,Inbred Rat Strains,Inbred Strain of Rat,Inbred Strain of Rats,Inbred Strains of Rats,Rat, Inbred Strain,August Rat,Inbred Rat Strain,Inbred Strain Rat,Inbred Strain Rats,Inbred Strains Rat,Inbred Strains Rats,Rat Inbred Strain,Rat Inbred Strains,Rat Strain, Inbred,Rat Strains, Inbred,Rat, August,Rat, Inbred Strains,Rats Inbred Strain,Rats Inbred Strains,Rats, August,Rats, Inbred Strain,Strain Rat, Inbred,Strain Rats, Inbred,Strain, Inbred Rat,Strains, Inbred Rat
D003921 Diabetes Mellitus, Experimental Diabetes mellitus induced experimentally by administration of various diabetogenic agents or by PANCREATECTOMY. Alloxan Diabetes,Streptozocin Diabetes,Streptozotocin Diabetes,Experimental Diabetes Mellitus,Diabete, Streptozocin,Diabetes, Alloxan,Diabetes, Streptozocin,Diabetes, Streptozotocin,Streptozocin Diabete
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
D006943 Hyperglycemia Abnormally high BLOOD GLUCOSE level. Postprandial Hyperglycemia,Hyperglycemia, Postprandial,Hyperglycemias,Hyperglycemias, Postprandial,Postprandial Hyperglycemias
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
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

Related Publications

R M Colella, and J M May, and S Bonner-Weir, and J L Leahy, and G C Weir
January 1993, Advances in experimental medicine and biology,
R M Colella, and J M May, and S Bonner-Weir, and J L Leahy, and G C Weir
January 2007, Cell biochemistry and function,
R M Colella, and J M May, and S Bonner-Weir, and J L Leahy, and G C Weir
September 1985, Life sciences,
R M Colella, and J M May, and S Bonner-Weir, and J L Leahy, and G C Weir
June 1995, Endocrinology,
R M Colella, and J M May, and S Bonner-Weir, and J L Leahy, and G C Weir
November 2002, FEBS letters,
R M Colella, and J M May, and S Bonner-Weir, and J L Leahy, and G C Weir
January 2014, Biochemical and biophysical research communications,
R M Colella, and J M May, and S Bonner-Weir, and J L Leahy, and G C Weir
January 1983, Experimental and clinical endocrinology,
R M Colella, and J M May, and S Bonner-Weir, and J L Leahy, and G C Weir
October 2015, American journal of physiology. Endocrinology and metabolism,
R M Colella, and J M May, and S Bonner-Weir, and J L Leahy, and G C Weir
April 2018, Endocrine journal,
R M Colella, and J M May, and S Bonner-Weir, and J L Leahy, and G C Weir
July 2007, Zhonghua nei ke za zhi,
Copied contents to your clipboard!