| Dietary soy protein reduces cardiac lipid accumulation and the ceramide concentration in high-fat diet-fed rats and ob/ob mice. | |
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MedLine Citation:
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PMID: 19828684 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Obesity is an epidemic condition strongly associated with cardiovascular morbidity and mortality. Heart disease secondary to obesity is associated with myocardial steatosis, leading to ceramide synthesis and cell dysfunction in a process known as lipotoxicity. Soy protein has been demonstrated to reduce lipotoxicity in the liver and pancreas in different rodent models of obesity. Thus, our purpose in the present work was to assess the effect of dietary soy protein on cardiac lipid accumulation and ceramide formation during obesity and to evaluate its effect in the following 2 rodent models of obesity: 1) a diet-induced obesity model in Sprague-Dawley rats was produced by feeding rats a control or a high-fat casein or soy protein diet for 180 d; and 2) wild-type and ob/ob mice were fed a casein or soy protein diet for 90 d. Soy protein intake led to lower cholesterol and triglyceride concentrations in the hearts of rats and ob/ob mice in association with a greater PPARalpha mRNA concentration and a lower level of sterol regulatory element binding protein-1 mRNA than those fed casein. The ceramide concentration was also lower in hearts of rats and ob/ob mice that were fed soy protein in association with lower serine palmitoyl transferase (SPT)-1 and tumor necrosis factor-alpha mRNA concentrations. These results indicate that dietary soy protein can reduce the heart ceramide concentration by reducing the expression of SPT-1, a key enzyme in the formation of this sphingolipid in the heart of obese rodents, and by reducing lipid accumulation. Thus, soy protein consumption may be considered as a dietary therapeutic approach for lipotoxic cardiomyopathy prevention. |
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Authors:
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Ivan Torre-Villalvazo; Fabiola Gonzalez; Carlos A Aguilar-Salinas; Armando R Tovar; Nimbe Torres |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-10-14 |
Journal Detail:
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Title: The Journal of nutrition Volume: 139 ISSN: 1541-6100 ISO Abbreviation: J. Nutr. Publication Date: 2009 Dec |
Date Detail:
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Created Date: 2009-11-25 Completed Date: 2010-01-06 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0404243 Medline TA: J Nutr Country: United States |
Other Details:
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Languages: eng Pagination: 2237-43 Citation Subset: IM |
Affiliation:
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Department Fisiolog??a de la Nutrici??n, Instituto Nacional de Ciencias M??dicas y Nutrici??n Salvador Zubir??n, M??xico, DF, M??xico. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Body Weight / drug effects Ceramides / metabolism* DNA Primers DNA, Complementary / genetics Dietary Fats / pharmacology* Dietary Proteins / pharmacology* Female Gene Expression Regulation / drug effects Heart / drug effects* Lipids / physiology* Mice Mice, Inbred C57BL Mice, Obese Myocardium / metabolism Ovariectomy* Polymerase Chain Reaction / methods RNA / genetics, isolation & purification Rats Reference Values Soybean Proteins / pharmacology* Tibia / drug effects, physiology, radiography Tomography, X-Ray Computed |
| Chemical | |
Reg. No./Substance:
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0/Ceramides; 0/DNA Primers; 0/DNA, Complementary; 0/Dietary Fats; 0/Dietary Proteins; 0/Lipids; 0/Soybean Proteins; 63231-63-0/RNA |
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