| Modified Soybean Affects Cholesterol Metabolism in Rats Similarly to a Commercial Cultivar. | |
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MedLine Citation:
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PMID: 21501092 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Abstract The consumption of soy protein lowers blood cholesterol in humans and animals. Breeding may alter the physiological effects of soybeans, such as its cholesterol-lowering property. Our hypothesis is that breeding affects the hypocholesterolemic effect of soy by modulating the expression of key hepatic enzymes related to cholesterol and bile acid biosynthesis, as well as altering fecal neutral and acidic steroid excretion. Therefore the aim of this study was to evaluate the effect of a new Brazilian soybean cultivar (UFV-116), lacking lipoxygenases 2 and 3, compared with a commercial cultivar (OCEPAR-19), on 3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMGR) and cholesterol 7α-hydroxylase (CYP7A) mRNA expression and fecal steroid output in rats. Thirty-six male rats were fed UFV-116, OCEPAR-19, or casein as the protein source, with or without addition of dietary cholesterol (0.25%). Blood and liver cholesterol, HMGR and CYP7A mRNA abundance, and fecal excretion of steroids were measured. Blood and liver cholesterol levels were lowered by both soybean cultivars, with and without cholesterol, but UFV-116 was more effective when included in the cholesterol-free diet. Both soy diets promoted lower levels of HMGR mRNA, higher levels of CYP7A mRNA, and higher excretion of fecal secondary bile acids. There was higher fecal neutral steroid output when cholesterol was added to all diets. These data show that both soybean cultivars acted similarly in lowering serum and hepatic cholesterol; therefore, breeding did not affect the hypocholesterolemic effect of the new cultivar. |
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Authors:
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Elizabethe A Esteves; Josefina Bressan; Neuza M B Costa; Hercia S D Martino; Shawn S Donkin; Jon A Story |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-4-18 |
Journal Detail:
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Title: Journal of medicinal food Volume: - ISSN: 1557-7600 ISO Abbreviation: - Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-4-19 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9812512 Medline TA: J Med Food Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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1 Department of Nutrition, Federal University of Vales do Jequitinhonha e Mucuri , Diamantina, Minas Gerais, Brazil . |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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