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Leptin resistance does not induce hyperphagia in the rat.
MedLine Citation:
PMID:  22144345     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Leptin has been thought to work as a mediator for body weight control by inhibiting food intake. Leptin, however, cannot prevent obesity induced by a high-fat diet (HFD) probably because of leptin resistance. We investigated daily feeding and weight gain when ordinary chow (OC) was changed to a HFD in male rats. Food intake, by weight, significantly increased the next day, but gradually decreased until at 20 days the HFD intake contained the same calories as consumed by the OC-fed control rats. The reduction in food intake occurred only during the night without change of preference for the HFD, even after leptin resistance had developed. Nonetheless, the HFD-fed rats gained more weight than the controls. From the present experiment, it is concluded that leptin resistance does not induce hyperphagia, and suggested that body weight is not regulated to be constant.
Authors:
Takashi Higuchi; Akiko Mizuno; Kazumi Narita; Toru Ichimaru; Takuya Murata
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-12-6
Journal Detail:
Title:  The journal of physiological sciences : JPS     Volume:  -     ISSN:  1880-6562     ISO Abbreviation:  -     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-12-6     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101262417     Medline TA:  J Physiol Sci     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Integrative Physiology, Faculty of Biomedical Sciences, University of Fukui, Matsuoka, Eiheiji-cho, Fukui, 910-1193, Japan, higuchit@u-fukui.ac.jp.
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