Document Detail


Dietary palatinose and oleic acid ameliorate disorders of glucose and lipid metabolism in Zucker fatty rats.
MedLine Citation:
PMID:  17634263     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Excessive dietary intake of carbohydrates and fats has been linked to the development of obesity. However, the mechanism by which these dietary factors interact to bring about metabolic changes has not been elucidated. We examined the combined effects of different types of dietary carbohydrates and fats on the etiology of obesity and its complications in the Zucker fatty (fa/fa) rat, a model of obesity. Specifically, these rats were fed an isocaloric diet containing various combinations of carbohydrates [palatinose (P), an insulin-sparing sucrose analogue, and sucrose (S)] and fatty acids [oleic acid (O) and linoleic acid (L)]. After 8 wk, palatinose feeding (PO and PL) led to significant reductions in visceral fat mass, adipocyte cell size, hyperglycemia, and hyperlipidemia compared with sucrose feeding (SO and SL); pancreatic islet hypertrophy was also prevented by palatinose feeding. Linoleic-acid-fed rats (PL and SL) exhibited reduced insulin-immunoreactive staining of the pancreatic islets, enhanced macrophage infiltration in adipose tissue, and an elevated plasma tumor necrosis factor-alpha concentration when compared with oleic-acid-fed rats (PO and SO). Furthermore, sucrose and linoleic acid synergistically increased the expression of genes involved in hepatic gluconeogenesis and lipogenesis [sterol regulatory-element binding protein (SREBP)-1c and SREBP-2]. In conclusion, a diet containing palatinose and oleic acid may prevent diet-induced metabolic abnormalities. The combination of palatinose and oleic acid holds promise for a new approach to preventing and treating obesity and its complications.
Authors:
Kazusa Sato; Hidekazu Arai; Akira Mizuno; Makiko Fukaya; Tadatoshi Sato; Megumi Koganei; Hajime Sasaki; Hironori Yamamoto; Yutaka Taketani; Toshio Doi; Eiji Takeda
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of nutrition     Volume:  137     ISSN:  0022-3166     ISO Abbreviation:  J. Nutr.     Publication Date:  2007 Aug 
Date Detail:
Created Date:  2007-07-19     Completed Date:  2007-09-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0404243     Medline TA:  J Nutr     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1908-15     Citation Subset:  IM    
Affiliation:
Department of Clinical Nutrition, Institute of Health Biosciences, University of Tokushima Graduate School, Tokushima 770-8503, Japan.
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MeSH Terms
Descriptor/Qualifier:
Adipose Tissue / drug effects,  pathology
Animals
Blood Glucose / drug effects
Body Weight
Diet*
Gene Expression Regulation / drug effects
Glucose / metabolism*
Inflammation / pathology
Isomaltose / analogs & derivatives*,  pharmacology
Lipid Metabolism / drug effects*
Liver / drug effects,  metabolism
Male
Oleic Acid / pharmacology*
Pancreas / drug effects
Rats
Rats, Zucker
Triglycerides / blood
Chemical
Reg. No./Substance:
0/Blood Glucose; 0/Triglycerides; 112-80-1/Oleic Acid; 13718-94-0/isomaltulose; 499-40-1/Isomaltose; 50-99-7/Glucose

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


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