Document Detail

Metabolic performance of free fed rats subjected to prolonged fast as compared to the metabolic pattern in rats under long term food restriction.
MedLine Citation:
PMID:  6395149     Owner:  NLM     Status:  MEDLINE    
Glycemia, free fatty acids, insulinemia, hepatic glycogen, adrenal ascorbic acid, the amount of food ingested and of feces eliminated, gastric emptying and body weight were measured in two groups of rats of the same age. The F, free fed group was subjected to fast during 22 hours and then had a final meal for two hours. The R rats, subjected to food restriction from one to four weeks, had also a final two hour meal after the regular period of 22 hours with no access to food, and then both groups were treated equally. Coincidently, gastric emptying was more delayed, liver glycogen concentration was highest and glycemia was better maintained in the R than the F rats, particularly after three and four weeks of training. Probably due to their greater dependence upon the more frequent supply of nutrients, the F group had a larger free fatty acids mobilization during fast. Adrenal hyperactivity was induced in both groups and the amount of food ingested progressively increased in the R group and decreased in the F group. In general the metabolic efficiency tended to converge to a similar order of magnitude in both groups of animals by the end of the third week. A delayed gastric emptying seems to be a major factor in the adaptations to food restriction.
R Curi; N S Hell; R B Bazotte; C Timo-Iaria
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Physiology & behavior     Volume:  33     ISSN:  0031-9384     ISO Abbreviation:  Physiol. Behav.     Publication Date:  1984 Oct 
Date Detail:
Created Date:  1985-03-18     Completed Date:  1985-03-18     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0151504     Medline TA:  Physiol Behav     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  525-31     Citation Subset:  IM    
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MeSH Terms
Adrenal Glands / analysis
Ascorbic Acid / analysis
Blood Glucose / analysis
Body Weight
Fatty Acids, Nonesterified / blood
Food Deprivation / physiology*
Insulin / blood
Liver Glycogen / analysis
Rats, Inbred Strains
Reg. No./Substance:
0/Blood Glucose; 0/Fatty Acids, Nonesterified; 0/Liver Glycogen; 11061-68-0/Insulin; 50-81-7/Ascorbic Acid

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

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