Document Detail


The function of porcine PPARγ and dietary fish oil effect on the expression of lipid and glucose metabolism related genes.
MedLine Citation:
PMID:  20970313     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Peroxisome-proliferator-activated receptor γ (PPARγ) plays a critical role in regulation of adipocyte differentiation and insulin sensitivity. To become functional, PPARγ must be activated by binding an appropriate ligand. Polyunsaturated fatty acids (PUFA) are potential ligands for PPARγ. The current experiment was designed to determine the potential for PUFA, particularly eicosapentaenoic acid and docosahexaenoic acid, to activate the function of porcine PPARγ in vivo. Transgenic mice, expressing porcine PPARγ in skeletal muscle were generated and fed with a high-saturated fat (beef tallow) or high-unsaturated fat (fish oil) diet for 4 months. When transgenic mice were fed a fish oil supplemented diet, the expression of adipogenic and glucose uptake genes was increased, leading to reduced plasma glucose concentration. The PPARγ transgene increased the expression of Glut4 in the muscle. This result suggests that there was increased glucose utilization and, therefore, a reduced blood glucose concentration in the transgenic mice. Also, the plasma adiponectin was elevated by fish oil treatment, suggesting a role of adiponectin in mediating the PUFA effect. These results suggest that PUFA may serve as a natural regulator of glucose uptake in vivo and these effects are mainly through PPARγ function.
Authors:
Yu-Hsiang Yu; Shinn-Chih Wu; Winston Teng-Kuei Cheng; Harry J Mersmann; Tang-Long Shen; Shih-Torng Ding
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Publication Detail:
Type:  Journal Article     Date:  2010-10-20
Journal Detail:
Title:  The Journal of nutritional biochemistry     Volume:  22     ISSN:  1873-4847     ISO Abbreviation:  J. Nutr. Biochem.     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-01-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9010081     Medline TA:  J Nutr Biochem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  179-86     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 Elsevier Inc. All rights reserved.
Affiliation:
Department of Animal Science and Technology/Institute of Biotechnology, National Taiwan University, Taipei 106, Taiwan.
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