Document Detail


The metabolic and hormonal adaptations of normal dogs to long-term exogenous sulfated insulin infusions.
MedLine Citation:
PMID:  3531758     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Hyperinsulinism frequently accompanies glucose normalization in type I diabetes but the long-term consequences of this exaggerated hormonal state are not known. To study this condition, normal dogs received constant exogenous sulfated insulin infusions for prolonged periods up to 43 weeks. During the interval and inspite of prevailing postabsorptive and fasting hypoglycemia, overt resistance to the infused insulin or loss of sensitivity did not occur. In counterring the imposed fasting hyperinsulinemia and the resulting hypoglycemia, fasting pancreatic glucagon levels rose while the fasting levels of several glucogenic precursors (lactate, pyruvate, and alanine) decreased. Fasting free fatty acid (FFA) levels were suppressed, but beta-hydroxybutyrate (beta-OHB) levels were unchanged. Body weight did not change. Most remarkably, all changes measured in the fasting levels of the hormones and metabolites reverted to normal following the cessation of exogenous sulfated insulin infusion. In addition to the hormonal and metabolite adaptations invoked by chronic exogenous hyperinsulinism in the fasting state of these normal dogs, there were interesting responses to their usual mixed meals. Of particular interest in this regard were the plasma glucose, insulin, and FFA diurnal profiles. First of all, a definite and unusual postprandial glycemic excursion occurred. Second, insulin levels were elevated some sixfold, and rather unresponsive to the meal in general. Inspite of the depressed fasting FFA levels and the absence of a postprandial rise in insulinemia, FFA showed a distinct fall after the meal. Whether the sulfated insulins infused were of the bovine or porcine species of origin made no discernible difference.(ABSTRACT TRUNCATED AT 250 WORDS)
Authors:
M Nomura; G R Greenberg; A Bahoric; A M Albisser
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Metabolism: clinical and experimental     Volume:  35     ISSN:  0026-0495     ISO Abbreviation:  Metab. Clin. Exp.     Publication Date:  1986 Oct 
Date Detail:
Created Date:  1986-11-14     Completed Date:  1986-11-14     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0375267     Medline TA:  Metabolism     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  892-8     Citation Subset:  IM; S    
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MeSH Terms
Descriptor/Qualifier:
3-Hydroxybutyric Acid
Adaptation, Physiological*
Alanine / blood
Animals
Blood Glucose / analysis
Circadian Rhythm
Dogs
Fatty Acids, Nonesterified / blood
Gastric Inhibitory Polypeptide / blood
Gastrins / blood
Glucagon / blood*
Hydroxybutyrates / analysis
Insulin / administration & dosage*,  blood
Lactates / blood
Lactic Acid
Male
Pyruvates / blood
Pyruvic Acid
Sulfates
Time Factors
Grant Support
ID/Acronym/Agency:
N01-AM-9-2201/AM/NIADDK NIH HHS
Chemical
Reg. No./Substance:
0/Blood Glucose; 0/Fatty Acids, Nonesterified; 0/Gastrins; 0/Hydroxybutyrates; 0/Lactates; 0/Pyruvates; 0/Sulfates; 11061-68-0/Insulin; 127-17-3/Pyruvic Acid; 300-85-6/3-Hydroxybutyric Acid; 50-21-5/Lactic Acid; 56-41-7/Alanine; 59392-49-3/Gastric Inhibitory Polypeptide; 9007-92-5/Glucagon

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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