Document Detail

Meal pattern analysis to investigate the satiating potential of fat, carbohydrate, and protein in rats.
MedLine Citation:
PMID:  9435645     Owner:  NLM     Status:  MEDLINE    
We examined meal patterns after isocaloric duodenal infusions of fat, carbohydrate (CHO), and protein by measuring meal size, intermeal interval (IMI) and total food intake (TFI). Wistar rats were adapted to normal feeding 6 h/day, with continuous computer monitoring of feeding patterns. One of five solutions (10 ml of 1 kcal/ml at 0.45 ml/min; 0, 20, 50, 80, or 100% of energy from fat) or saline (control) was infused 10 min after initiation of eating. Separate rats received casein or casein hydrolysate at 18.5 or 37% energy. Equivalent energy loads varying in fat, CHO, and protein content compared with saline resulted in similar reductions in first meal intakes. The second meal did not differ among fat and CHO treatments including saline; however, infusion with a protein-containing solution increased the size of meal 2. The IMI was doubled by protein infusion independently of dose or source but extended dose dependently by fat. TFI was lower after high fat and higher after protein than after saline infusion. The results indicate that the concentrations of fat, CHO, and protein differentially affect the qualitative and quantitative aspects of feeding in rats.
B Burton-Freeman; D W Gietzen; B O Schneeman
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  The American journal of physiology     Volume:  273     ISSN:  0002-9513     ISO Abbreviation:  Am. J. Physiol.     Publication Date:  1997 Dec 
Date Detail:
Created Date:  1998-02-09     Completed Date:  1998-02-09     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0370511     Medline TA:  Am J Physiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  R1916-22     Citation Subset:  IM    
Department of Nutrition, School of Veterinary Medicine, University of California, Davis 95616, USA.
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MeSH Terms
Dietary Carbohydrates*
Dietary Fats*
Dietary Proteins*
Duodenum / physiology*
Energy Intake
Energy Metabolism
Enteral Nutrition
Feeding Behavior*
Rats, Wistar
Satiety Response / physiology*
Time Factors
Grant Support
Reg. No./Substance:
0/Dietary Carbohydrates; 0/Dietary Fats; 0/Dietary Proteins

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