4.7 Article

Cholesterol-reducing effect of ergosterol is modulated via inhibition of cholesterol absorption and promotion of cholesterol excretion

期刊

JOURNAL OF FUNCTIONAL FOODS
卷 57, 期 -, 页码 488-496

出版社

ELSEVIER SCIENCE BV
DOI: 10.1016/j.jff.2019.04.042

关键词

Ergosterol; Cholesterol-lowering; Hypercholesterolemia; Edible mushroom

资金

  1. National Natural Science Foundation of China [31401664]
  2. Natural Science Foundation of the Jiangsu Higher Education Institutions of China [18KJB550001]
  3. Hong Kong Scholars Program [XJ2017019]
  4. Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University (BTBU)
  5. Research Fund for Advanced Talents of Jiangsu University [13JDG070]

向作者/读者索取更多资源

Ergosterol is the common sterol found in edible mushrooms. This study investigated the cholesterol-reducing effect of ergosterol and its related potential mechanism in Sprague-Dawley rats. Thirty-two male rats were divided into four groups fed either a basic diet (NG) or one of three experimental diets, namely high-cholesterol diet (HC), and the two HC diets containing 0.5% ergosterol (EL) and 1.5% ergosterol (EH), respectively, for 8 weeks. Results demonstrated that feeding EL and EH diets decreased serum total cholesterol (TC) by 19.4-21.6%, low density lipoproptein cholesterol (LDL-C) by 42.0-42.6%, and TC/HDL-C ratio by 7.1-10.5%. This was accompanied by 46.8-53.2% reduction in liver cholesterol and 51.0-59.3% increase in fecal cholesterol excretion with up-regulation on gene expression of liver sterol regulatory element-binding protein 2 (SREBP-2), low-density lipoprotein receptor (LDL-R) and Hydroxy-3-Methylglutaryl-Coenzyme A Reductase (HMG-CoR). Results from micelles formation assay in vitro clearly demonstrated that ergosterol could significantly inhibit the entry of cholesterol into micelles. Therefore, the cholesterol-reducing effect of ergosterol was regulated by suppressing intestine cholesterol absorption and promoting the excretion of fecal cholesterol via modulating the expression of hepatic cholesterol-related genes.

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