Document Detail


Pancreatic glucagon, food deprivation and feeding in intact and vagotomized rabbits.
MedLine Citation:
PMID:  515205     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Thirty New-Zealand female rabbits were implanted with hepatic-portal cannulas and six simultaneously underwent bilateral subdiaphragmatic vagotomy. When recovered, all animals received pancreatic glucagon infused at 1.0 cc/min for a total dosage of 12 microgram in 3.0 cc of isotonic saline. On alternate days, isotonic saline alone was infused as a control. Twelve intact and six vagotomized animals received infusions terminating food deprivations of 4, 8, and 24 hr while the remaining animals received the infusions only when free feeding. The feeding behavior of all animals was measured at 0.5, 1 and 2 hr postinfusion. Glucagon significantly suppressed feeding relative to saline only in 0- and 4-hr-food-deprived intact rabbits. Longer deprivations followed by glucagon did not produce suppression, and glucagon was completely ineffective in suppressing feeding in vagotomized animals. Although glucagon infusion in 4-hr food-deprived intact rabbits produced 38% suppression of food intake during the first hr postadministration, glycogen analysis revealed no significant reduction under the behavioral testing paradigm. These results indicate that glucagon can suppress food intake without depletion of liver glycogen. It is suggested that glucagon is not a satiety signal but can probably suppress feeding through initiating glycogenolysis.
Authors:
D A Vanderweele; P J Geiselman; D Novin
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Physiology & behavior     Volume:  23     ISSN:  0031-9384     ISO Abbreviation:  Physiol. Behav.     Publication Date:  1979 Jul 
Date Detail:
Created Date:  1980-02-15     Completed Date:  1980-02-15     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0151504     Medline TA:  Physiol Behav     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  155-8     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Animals
Eating / drug effects
Feeding Behavior / drug effects*
Female
Food Deprivation
Glucagon / pharmacology*
Glycogen / metabolism
Rabbits
Vagotomy*
Chemical
Reg. No./Substance:
9005-79-2/Glycogen; 9007-92-5/Glucagon

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


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