Medium-Chain Fatty Acids Enhanced the Excretion of Fecal Cholesterol and Cholic Acid in C57BL/6J Mice Fed a Cholesterol-Rich Diet
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概要
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The objective of the present study was to investigate the cholesterol-reducing effect of medium-chain fatty acids (MCFAs) completed by elevated excretion of fecal neutral steroids and/or bile acids. Blood and liver lipid profiles, fecal neutral steroids, bile acids, and mRNA and protein expression of the genes relevant to cholesterol homeostasis were measured and analyzed in C57BL/6J mice fed a cholesterol-rich diet with 2% caprylic acid or capric acid for 12 weeks. Blood total cholesterol and low-density lipoprotein cholesterol (LDL-c) levels were reduced significantly as compared to diet with palmitic acid or stearic acid. Caprylic acid promoted the excretion of fecal neutral steroids, especially cholesterol. The excretion of fecal bile acids, mainly in the form of cholic acid was enhanced and accompanied by elevated expression of mRNA and the protein of hepatic cholesterol 7α-hydroxylase (CYP7A1). These results indicate that MCFAs can reduce blood cholesterol by promoting the excretion of fecal cholesterol and cholic acid.
著者
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LIU Yinghua
Department of Nutrition, Chinese PLA General Hospital
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Xue Changyong
Department Of Nutrition Chinese Pla General Hospital
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Yu Xiaoming
Department Of Nutrition Chinese Pla General Hospital
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Zhang Rongxin
Department Of Nutrition Chinese Pla General Hospital
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ZHANG Xinsheng
Department of Nutrition, Chinese PLA General Hospital
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GUO Changjiang
Institute of Hygiene and Environmental Medicine, Academy of Military Medical Sciences
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Wang Jin
Department Of Biological Sience And The Mervin Bovaird Center For Studies In Molecular Biology And B
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Guo Changjiang
Institute Of Hygiene And Environmental Medicine Academy Of Military Medical Sciences
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Zhang Xinsheng
Department Of Nutrition Chinese Pla General Hospital
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Liu Yinghua
Department Of Nutrition Chinese Pla General Hospital
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Zhang Yong
Department Of Applied Bioresource Science The United Graduate School Of Agricultural Sciences Ehime University
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Zhang Yong
Department of Nutrition, Chinese PLA General Hospital
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XU Qing
Institute of Hygiene and Environmental Medicine, Academy of Military Medical Sciences
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YANG Xueyan
Department of Nutrition, Chinese PLA General Hospital
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