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中国临床药理学与治疗学 ›› 2004, Vol. 9 ›› Issue (1): 20-24.

• 研究原著 • 上一篇    下一篇

盐酸埃他卡林对缺氧诱导神经细胞凋亡的影响

张颖丽, 冯华松, 汪海   

  1. 军事医学科学院毒物药物研究所, 北京 100850
  • 收稿日期:2003-06-09 修回日期:2003-07-19 出版日期:2004-01-26 发布日期:2020-11-16
  • 通讯作者: 汪海,男, 医学博士, 研究员, 博士生导师, 从事心血管药理和新药研究工作。Tel:010-66932651  Fax:010-68211656  E-mail: wh@nic.bmi.ac.cn
  • 作者简介:张颖丽, 女, 28 岁, 博士研究生。Tel:010-6687-4608 E-mail:yingliz@yahoo.com
  • 基金资助:
    全军医药卫生科研基金重点课题(NO.01Z025)

Effects of iptakalim hydrochloride on apoptosis of primary cultured cortical neurons induced by hypoxia

ZHANG Ying-Li, FENG Hua-Song, WANG Hai   

  1. Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing 100850, China
  • Received:2003-06-09 Revised:2003-07-19 Online:2004-01-26 Published:2020-11-16

摘要: 目的: 探讨盐酸埃他卡林(Ipt) 对缺氧诱导的大鼠皮质神经细胞凋亡的影响。方法: 用电镜和流式细胞分析技术, 检测原代培养的大鼠皮质神经细胞凋亡;应用免疫组化法, 观察凋亡相关蛋白Bcl-2 、Bax 表达的改变。结果: Ipt 10 μmol·L-1可减轻缺氧诱导的细胞染色质浓缩现象, 逆转缺氧诱导的Bcl-2表达的下调, 对Bax 表达无显著影响;Ipt (0.1~10 μmol·L-1) 能剂量依赖性地降低凋亡细胞百分率, 以10 μmol·L-1 浓度组效果最好, 其作用可被ATP 敏感性钾通道特异性阻断剂格列本脲(Gli) 所拮抗。结论: Ipt 对缺氧诱导的神经细胞凋亡有明显的抑制作用, 其作用机制与ATP 敏感性钾通道、Bcl-2 表达相关。

关键词: 凋亡, 盐酸埃他卡林, ATP 敏感性钾通道, 格列本脲, 缺氧

Abstract: AIM: To investigate the effects of iptakalim hydrochloride (Ipt) on apoptosis of primary cultured cortical neurons induced by hypoxia.METHODS: Apoptosis was measured using electron microscope and flow cytometric analysis technique.The expression of Bcl-2 and Bax was revealed by immunocytochemistry.RESULTS: Ipt 10 μmol·L-1 was found to improve ultrastructural features of apoptosis of primary cultured cortical neurons induced by hypoxia;up-regulate Bcl-2 expression with no influence on Bax expression.Ipt (0.1-10 μmol·L-1)was shown to decrease the percent of apoptosis dose-dependently.These effects were antagonized by KATP blocker glibenclamide (Gli).CONCLUSION: Ipt showed inhibitory effects on apoptosis of primary cultured cortical neurons induced by hypoxia and its mechanisms may be related with KATP and Bcl-2 expression.

Key words: apoptosis, iptakalim hydrochloride, ATP-sensitive potassium channel, glibenclamide, hypoxia

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