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中国临床药理学与治疗学 ›› 2003, Vol. 8 ›› Issue (2): 129-132.

• 研究原著 • 上一篇    下一篇

异丙酚对PC12 细胞和脂质体膜流动性的影响1

张晋蓉, 林财珠, 杨锡馨, 吕凯荣2, 盛国庆3, 戴体俊3   

  1. 福建医科大学附属第一医院麻醉科, 福州 350005, 福建;
    2徐州医学院第二附属医院麻醉科, 徐州 221002, 江苏;
    3徐州医学院麻醉学系, 徐州 221002, 江苏
  • 收稿日期:2002-12-26 修回日期:2003-01-02 出版日期:2003-04-26 发布日期:2020-11-25
  • 作者简介:张晋蓉, 女, 在读硕士, 主要从事全麻药物机理的研究。
  • 基金资助:
    1 国家自然科学基金资助项目(№:39970715); 江苏省自然科学基金资助项目(№:BK2001143)

Effects of propofol on plasma membrane fluidity in PC12 cells and liposome1

ZHANG Jin-Rong, LIN Cai-Zhu, YANG Xi-Xin, LU Kai-Rong2, Sheng Guo-Qing3, Dai Ti-Jun3   

  1. Department of Anesthesiology, First Affiliated Hospital of FuJian Medical Univesrsity, Fuzhou 350005, Fujian;
    2The Second Affiliated Hospital of Xuzhou Medical College, Xuzhou 221002, Jiangsu;
    3Department of Anesthesiology, Xuzhou Medical College, Xuzhou 221002, Jiangsu
  • Received:2002-12-26 Revised:2003-01-02 Online:2003-04-26 Published:2020-11-25

摘要: 目的: 研究异丙酚对PC12 细胞和脂质体膜流动性的影响, 探讨其全麻作用机理。方法: 以PC12细胞作为神经细胞模型, 以脂质体作为生物膜模型,利用荧光偏振技术离体动态地检测30 min 内异丙酚对PC12 细胞各向异性r、荧光偏振度P 和微粘度η及脂质体微粘度η的影响, 分析细胞膜流动性的改变。结果: 各浓度的异丙酚均可引起PC12 细胞膜的各向异性r、荧光偏振度P 和微粘度η的显著性降低, 尤其在前5 min 内r、P、η值下降迅速, 5 min 后各指标下降的趋势渐渐平缓。与PC12 细胞相类似,除了1 mg·L-1组外, 10、100 mg·L-1的异丙酚均显著降低脂质体微粘度η值。结论: 异丙酚能显著增加PC12 细胞和脂质体的膜流动性, 提示其全麻作用原理可能是通过改变神经细胞膜的功能或结构产生。

关键词: 药理学, 异丙酚, 细胞, PC12, 脂质体, 膜流

Abstract: AIM: To study the effects of propofol on plasma membrane fluidity in PC12 cells and liposome, and its relevant mechanism. METHODS: Fluorescence depolarization method was used to measure values of fluorescence anisotropy, fluorescence polarization as well as microviscosity in PC12 cells and microviscosity in liposome continuously for 30 min. RESULTS: Propofol induced a significant decrease of fluorescence anisotropy, fluorescence polarization as well as microviscosity in PC12 cells, particularly in the first 5 min.After 5 min, the values of anisotropy were remained lower levels.Although propofol at concentration of 1 mg·L -1 had no effects on microviscosity in liposome, porpofol at concentration of 10 mg · L -1 and 100 mg·L -1 significantly decreased microviscosity in liposome. CONCLUTION: Propofol can significantly increase membrane fluidity in PC12 cells and liposome in a concertration-dependent manner, and the anesthetic effect of propofol may be resulted from changes of membrane fluidity and structure of neurocyte.

Key words: pharmacology, propofol, cells, PC12, liposome, membrane fluidity

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