Document Detail


Fast-twitch muscle hypertrophy partly induces lipid accumulation inhibition with Alaska pollack protein intake in rats.
MedLine Citation:
PMID:  21187645     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Fish protein is a source of animal protein that is consumed worldwide. Although it has been reported that the intake of Alaska pollack protein (APP) reduces serum triglyceride and body fat accumulation in rats, the mechanisms underlying these effects are poorly understood. In the present study, we fed 5-week-old male Sprague-Dawley rats a high-fat diet with APP or casein for 4 weeks. We reconfirmed that the intake of APP decreases serum triglycerides and inhibits visceral body fat accumulation in rats. We found that APP had a higher non-digestive protein content than casein, and the amount of protein in feces was higher in the APP group than in the casein group. However, the amount of total lipids in feces did not differ significantly between the groups. We also found that the gastrocnemius muscle, a fast-twitch muscle, tended to increase in weight, and that the epididymal fat weight correlated negatively with gastrocnemius muscle weight in the APP group. These results imply that the enhancement of basal energy expenditure by fast-twitch muscle hypertrophy, rather than the enhancement of lipid excretion via feces, partly causes APP-induced inhibition of lipid accumulation in rats.
Authors:
Takafumi Mizushige; Fuminori Kawabata; Keisuke Uozumi; Tomoko Tsuji; Taro Kishida; Kiyoshi Ebihara
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Biomedical research (Tokyo, Japan)     Volume:  31     ISSN:  1880-313X     ISO Abbreviation:  Biomed. Res.     Publication Date:  2010 Dec 
Date Detail:
Created Date:  2010-12-28     Completed Date:  2011-04-11     Revised Date:  2011-12-05    
Medline Journal Info:
Nlm Unique ID:  8100317     Medline TA:  Biomed Res     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  347-52     Citation Subset:  IM    
Affiliation:
Laboratory of Nutrition Science, Division of Applied Bioscience, Graduate School of Agriculture, Ehime University, Matsuyama, Japan.
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MeSH Terms
Descriptor/Qualifier:
Animals
Bile Ducts / metabolism
Body Composition
Caseins / metabolism
Dietary Fats / metabolism
Dietary Proteins / administration & dosage,  metabolism*
Energy Intake
Energy Metabolism
Fish Proteins / administration & dosage,  metabolism*
Gadiformes / metabolism
Hypertrophy
Intra-Abdominal Fat / metabolism
Lipid Metabolism
Male
Muscle Fibers, Fast-Twitch / metabolism*,  pathology
Rats
Rats, Sprague-Dawley
Triglycerides / blood
Chemical
Reg. No./Substance:
0/Caseins; 0/Dietary Fats; 0/Dietary Proteins; 0/Fish Proteins; 0/Triglycerides

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


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