Hypoglycemic responses to insulin in normothermic and hyperthermic young dogs. 1978

S A Omar, and S A Rizvi, and S Varma, and J B Singh

The present study was conducted in 10 healthy young dogs in which pattern of hypoglycemia to injected insulin (0.12 U/kg I.V.) was studied at normothermic (38.5 degrees C) and hyperthermic (42.5 degrees C) body temperatures. Average maximum fall in plasma glucose concentration from the control level was 44.3% and 53.8% in normothermic and hyperthermic dogs respectively. The hypoglycemic response to injected insulin was much greater and prolonged in hyperthermic dogs. The recovery of plasma glucose to preinjection level was also very sluggish and incomplete in these dogs. The above changes in hyperthermic animals may be due to enhanced secretion of insulin, as well as an increased sensitivity to injected insulin. The slow recovery of plasma glucose to preinjection level following insulin administration in hyperthermic dogs would indicate inefficient feedback mechanisms which normally operate to raise the plasma glucose during hypoglycemia.

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
D008297 Male Males
D001786 Blood Glucose Glucose in blood. Blood Sugar,Glucose, Blood,Sugar, Blood
D001831 Body Temperature The measure of the level of heat of a human or animal. Organ Temperature,Body Temperatures,Organ Temperatures,Temperature, Body,Temperature, Organ,Temperatures, Body,Temperatures, Organ
D004285 Dogs The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065) Canis familiaris,Dog
D005260 Female Females
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
D013997 Time Factors Elements of limited time intervals, contributing to particular results or situations. Time Series,Factor, Time,Time Factor

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