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中国临床药理学与治疗学 ›› 2006, Vol. 11 ›› Issue (5): 574-577.

• 研究原著 • 上一篇    下一篇

葛根素对膳食诱导的高胆固醇血症大鼠的血脂调节作用

闫莉萍1,2, 陈舜宏2,3, 陈伟民4, 陈士林1,2, 马小军1, 徐宏喜5   

  1. 1中国协和医科大学, 中国医学科学院药用植物研究所, 北京 100055;
    2深圳市中药药学及分子药理学研究重点实验室, 深圳 518057,广东;
    3深圳南粤药业有限公司, 深圳 518055,广东;
    4香港理工大学应用生物与化学技术系, 香港;
    5香港赛马会中药研究院, 香港
  • 收稿日期:2006-03-24 修回日期:2006-04-04 出版日期:2006-05-26 发布日期:2020-12-09
  • 通讯作者: 马小军, 男, 博士生导师, 研究方向:生药学。 Tel:010-62819410   E-mail:xjma@public.bta.net.cn
  • 作者简介:闫莉萍, 女, 博士生, 研究方向:中药药理学。 Tel:13794483953   E-mail:lpyan@126.com
  • 基金资助:
    香港赛马会慈善基金资助项目

Regulatory effect of puerarin on lipid profile in hypercholesterolemic rats

YAN Li-ping1,2, CHEN Shun-hong2,3, CHEN Wei-min4, CHEN Shi-lin1,2, MA Xiao-jun1, XU Hong-xi5   

  1. 1Peking Union Medical College &Chinese Academy of Medical Sciences, Beijing 100055, China;
    2State Key Laboratory of Chinese Medicine and Molecular Pharmacology, Shenzhen 518057, Guangdong, China;
    3Shenzhen South China Phar-maceutical Co.Ltd., Shenzhen 518055, Guangdong, China;
    4Department of Applied Biology and Chemical Technology, the Hong Kong Polytechnic University, Hong Kong SAR, China;
    5Hong Kong Jockey Club Institute of Chinese Medicine, Hong Kong SAR, China
  • Received:2006-03-24 Revised:2006-04-04 Online:2006-05-26 Published:2020-12-09

摘要: 目的: 观察葛根素对膳食诱导的高胆固醇血 症大鼠的血脂调节作用, 并对其机制进行探索。 方法: SD大鼠随机分为 3 组, 正常组 、模型组和葛根素 组。模型组和葛根素组均给予富含胆固醇的饲料 4 周, 葛根素组每天灌喂葛根素溶液(300 mg·kg-1 ·d-1)。 检测血清总胆固醇(TC)、甘油三酯(TG)、高密度脂 蛋白胆固醇(HDL-c)和低密度脂蛋白胆固醇(LDL-c) 的含量。 荧光定量 RT-PCR分析羟基-3-甲基戊二酰 CoA 还 原酶 (HMGR), 羊 毛固 醇 14α-去 甲基酶 (CYP51),7α-羟化酶 (CYP7A1)的 mRNA 转录水平。 结果: 葛根素显著降低高胆固醇膳食引起的血清胆 固醇的升高, 降低动脉粥样硬化指数, 上调 CYP7A1 的mRNA 转录水平, 对 HMGR 和 CYP51的转录水平 没有影响。结论: 这些数据表明葛根素能够降低血清胆固醇, 减低动脉粥样硬化发生危险。其降低胆固醇的作用可能是通过促进胆固醇转化为胆酸实现的。

关键词: 高胆固醇血症, 血脂水平, 动脉粥样硬化, 胆固醇平衡, 羟基-3-甲基戊二酰 CoA 还原酶, 羊毛固醇 14α-去甲基酶, 7α-羟化酶

Abstract: AIM: To investigate the regulatory effect of puerarin on lipid profile in diet-induced hypercholester-olemic rats and elucidate the mechanisms involved. METHODS: SD rats were randomly divided into the control group, hypercholesterolemia group and puerarin-treated group.The hypercholesterolemia group and puera-rin-treated group were given diet rich in cholesterol.In the meantime, the puerarin-treated group was orally ad-ministrated with puerarin (300 mg·kg-1 ·d-1).The lipid profile was investigated by the content of serum TC, TG, HDL-c and LDL-c.The mRNA levels of 7α-hydroxylase (CYP7A1), 3-hydroxy-3-methylglutaryl-CoA reductase (HMGR)and lanosterol 14α-demethylase (CYP51)were analyzed by real time RT-PCR.RESULTS: Puerarin markedly attenuated the increased serum total cholesterol induced by hypercholesterolemic diet.It caused a signifi-cant reduction in the atherogenic index.Expression of mRNA of CYP7A1 was significantly enhanced but not for those of HMGRand CYP51.CONCLUSION: These da-ta indicate that puerarin can reduce the atherogenic prop-erties of dietary cholesterol in rats.Its hypocholester-olemic function may be due to promoting the conversion of cholesterol into bile acids.

Key words: hypercholesterolemia, serum lipids lev-els, atherosclerosis, 3-hydroxy-3-methylglutaryl-CoA re-ductase, lanosterol 14α-demethylase, 7α-hydroxylase

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