Biomaterial Database

Dietary sucrose enhances insulin secretion of aging Fischer 344 rats. 1992

S L Hara, and R C Ruhe, and D L Curry, and R B McDonald

Department of Nutrition, University of California, Davis 95616.

Male Fischer 344 rats, ages 6, 12 and 26 mo, were fed a diet containing either sucrose or cornstarch (66% by weight) for 4 mo. The effects of age and dietary sucrose on glucose-stimulated insulin secretion were evaluated in whole perfused pancreases and isolated islets of Langerhans, and by intra-arterial glucose administration. In addition, glucose responsiveness of beta-cells was measured by following the rate of glucose oxidation in isolated islets. There was no significant effect of age on glucose-stimulated insulin secretion of whole perfused pancreases and islets of Langerhans. There was, however, a significant main effect of sucrose feeding on insulin secretion. That is, whole perfused pancreases and islets of Langerhans isolated from rats fed sucrose vs. starch diets secreted more insulin in response to glucose. This effect was most pronounced in the 26-mo-old rats. In general, islet glucose oxidation rates, and responses to the in vivo glucose, did not differ among the groups. We conclude that alterations in glucose-stimulated insulin secretion with age more closely reflect changes in diet rather than aging per se.

UI	MeSH Term	Description	Entries
D007261	Infusions, Intra-Arterial	Regional infusion of drugs via an arterial catheter. Often a pump is used to impel the drug through the catheter. Used in therapy of cancer, upper gastrointestinal hemorrhage, infection, and peripheral vascular disease.	Infusions, Regional Arterial,Infusions, Intra Arterial,Infusions, Intraarterial,Arterial Infusion, Intra,Arterial Infusion, Regional,Arterial Infusions, Intra,Arterial Infusions, Regional,Infusion, Intra Arterial,Infusion, Intra-Arterial,Infusion, Intraarterial,Infusion, Regional Arterial,Intra Arterial Infusion,Intra Arterial Infusions,Intra-Arterial Infusion,Intra-Arterial Infusions,Intraarterial Infusion,Intraarterial Infusions,Regional Arterial Infusion,Regional Arterial Infusions
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
D009924	Organ Culture Techniques	A technique for maintenance or growth of animal organs in vitro. It refers to three-dimensional cultures of undisaggregated tissue retaining some or all of the histological features of the tissue in vivo. (Freshney, Culture of Animal Cells, 3d ed, p1)	Organ Culture,Culture Technique, Organ,Culture Techniques, Organ,Organ Culture Technique,Organ Cultures
D010084	Oxidation-Reduction	A chemical reaction in which an electron is transferred from one molecule to another. The electron-donating molecule is the reducing agent or reductant; the electron-accepting molecule is the oxidizing agent or oxidant. Reducing and oxidizing agents function as conjugate reductant-oxidant pairs or redox pairs (Lehninger, Principles of Biochemistry, 1982, p471).	Redox,Oxidation Reduction
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.
D011916	Rats, Inbred F344	An inbred strain of rat that is used for general BIOMEDICAL RESEARCH purposes.	Fischer Rats,Rats, Inbred CDF,Rats, Inbred Fischer 344,Rats, F344,Rats, Inbred Fisher 344,CDF Rat, Inbred,CDF Rats, Inbred,F344 Rat,F344 Rat, Inbred,F344 Rats,F344 Rats, Inbred,Inbred CDF Rat,Inbred CDF Rats,Inbred F344 Rat,Inbred F344 Rats,Rat, F344,Rat, Inbred CDF,Rat, Inbred F344,Rats, Fischer
D001786	Blood Glucose	Glucose in blood.	Blood Sugar,Glucose, Blood,Sugar, Blood
D001835	Body Weight	The mass or quantity of heaviness of an individual. It is expressed by units of pounds or kilograms.	Body Weights,Weight, Body,Weights, Body