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中国临床药理学与治疗学 ›› 2005, Vol. 10 ›› Issue (1): 87-90.

• 研究原著 • 上一篇    下一篇

三羟基异黄酮和17-β 雌二醇对自由基缩血管效应的影响

张鹏, 李红芳, 田治峰1, 邱小青1, 张英福1   

  1. 兰州医学院生理教研室, 1医学机能实验室, 兰州 730000, 甘肃
  • 收稿日期:2004-10-23 修回日期:2004-12-11 出版日期:2005-01-26 发布日期:2020-11-19
  • 通讯作者: 李红芳, 女, 教授, 硕士生导师, 研究方向:平滑肌生理与药理。Tel:0931-8289134 E-mail:lhof@163.net
  • 作者简介:张鹏, 男, 硕士生。E-mail:zhangpenG2002006@163.com
  • 基金资助:
    中国博士后科学基金资助项目(No2003034442) 。

Effects of genistein and estradiol on ROS-mediated vasoconstriction

ZHANG Peng, LI Hong-fang, TIAN Zhi-feng1, QIU Xiao-qing1, ZHANG Ying-fu1   

  1. Department of Physiology, 1Functional Laboratory of Medicine, Lanzhou Medical College, Lanzhou 730000, Gansu, China
  • Received:2004-10-23 Revised:2004-12-11 Online:2005-01-26 Published:2020-11-19

摘要: 目的: 研究自由基引发血管收缩的机制, 并通过血管静息张力的变化探讨三羟基异黄酮和17-β雌二醇对自由基缩血管效应的影响。方法: 制备猪冠状动脉血管环, 固定于恒温肌槽内, 待平衡后, 加入各种药物观察血管张力的变化。结果: 内皮完整的血管环在O2·-作用下产生明显的收缩, 去除内皮后无明显反应。1 μmol·L-1三羟基异黄酮对O2·-引发血管收缩有明显的抑制作用(P <0.01, n=16),1 μmol·L-117-β 雌二醇无明显作用。H2O2 使去内皮血管环产生明显的收缩作用, 对内皮完整的血管环缩血管效应不明显, 30 μmol·L-1三羟基异黄酮可明显抑制H2O2 的缩血管作用。结论: 三羟基异黄酮可明显抑制O2·-和H2O2 的缩血管效应, 其作用明显强于17-β 雌二醇。

关键词: 三羟基异黄酮, 17-β 雌二醇, 血管张力, 自由基, 冠状血管

Abstract: AIM: To investigate the effects of different reactive oxygen species on the resting tension of porcine coronary arterial rings and to identify the effects of GEN and EST on ROS-elicited vasoconstriction.METHODS: Porcine coronary rings were prepared and then mounted in the organ bath.After an equilibration period, the changes treated with the drugs were observed.RESULTS: Rings with intact-endothelium appeared an obvious contraction after treatment with O2 ·-whereas endothelium-denuded rings had no effects.H2O2 induced a fast and transient contraction in the endothelium-denuded rings and failed in intact-endothelium rings.1 μmol·L-1GEN significantly inhibited contractile response evoked by O2 ·-.In contrast with GEN, 1 μmol·L-1EST had no effects.30 μmol·L-1GEN markedly attenuated the contraction elicited by H2O2.CONCLUSION: GEN has distinct inhibitive effect on vasoconstriction induced by O2·-and H2O2, and its action is obviously superior to that in EST.

Key words: genistein, estradiol, vascular arterial tension, reactive oxygen species, coronary artery

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