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中国临床药理学与治疗学 ›› 2005, Vol. 10 ›› Issue (1): 20-23.

• 研究原著 • 上一篇    下一篇

KATP通道开放剂吡那地尔对兔肺动脉平滑肌细胞增殖的影响

解卫平1,2, 丁建花1, 王虹1,2, 汪海3, 胡刚1   

  1. 1南京医科大学药理学系, 2第一附属医院呼吸内科, 南京 210029, 江苏;
    3军事医学科学院药物毒物研究所, 北京 100850
  • 收稿日期:2004-12-08 修回日期:2005-01-05 出版日期:2005-01-26 发布日期:2020-11-19
  • 通讯作者: 胡刚, 男, 博士, 教授, 博士生导师, 主要从事分子药理学与临床药理学研究。Tel:025-86663169 E-mail:ghu@njmu.edu.cn
  • 作者简介:解卫平, 女, 博士, 副主任医师, 副教授, 主要从事肺动脉高压的基础与临床研究。
  • 基金资助:
    国家创新药物基础研究重大项目基金(No969010101);国家自然科学基金(No39970846);江苏省科委社会发展基金(NoBJ2000051);江苏省教育厅基金(No00KJB320009)

Effects of pinacidil on proliferation of cultured rabbit pulmonary arterial smooth muscle cells induced by endothelin-1

XIE Wei-ping1,2, DING Jian-hua1, WANG Hong1,2, WANG Hai3, HU Gang1   

  1. 1Department of Pharmacology, 2Department of pulmonology, the First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, Jiangsu, China;
    3Institute of Pharmacology and Toxicology, Molitary Medicine and Science Academic, Beijing 100850, China
  • Received:2004-12-08 Revised:2005-01-05 Online:2005-01-26 Published:2020-11-19

摘要: 目的: 研究吡那地尔(pinacidil, Pin) 对内皮素-1(ET-1) 诱导培养的兔肺动脉平滑肌细胞(PASMC)增殖的影响。方法: 内皮素-1 刺激培养兔PASMC 增殖模型;以氚-胸腺嘧啶核苷([3H]-TdR) 掺入法观察细胞增殖及脱氧核糖核苷酸(DNA) 合成;流式细胞仪技术检测兔PASMC 细胞周期。结果: 吡那地尔可剂量依赖性的抑制内皮素-1 所致的[3H]-TdR 掺入量增多, 阻止兔PASMC 由静止期(G0/G1 期) 进入DNA 合成期(S 期) 和有丝分裂期(G2/M 期) 。ATP敏感性钾通道(KATP) 阻断剂格列本脲可拮抗吡那地尔对[3H]-TdR 掺入的抑制作用。结论: 吡那地尔可能通过激活KATP通道抑制内皮素-1 诱导兔肺动脉平滑肌细胞的增殖, 可望用于治疗肺动脉高压时所致的肺动脉重构。

关键词: 吡那地尔, 肺动脉平滑肌细胞, 内皮素-1, ATP 敏感性钾通道

Abstract: AIM: To explore the effects of pinacidil on the proliferation of rabbit pulmonary arterial smooth muscle cell (PASMC) induced by endothelin-1 in vitro. METHODS: The experimental model of proliferation of rabbit pulmonary arterial smooth muscle cell (PASMC) induced by endothelin-1 in vitro was established and [3H]-thymidine ([3H]-TdR) incorporation and flow cytometric analysis (FCA) were used.RESULTS: Pinacidil markedly inhibited [3H]-TdR incorporation of PASMC induced by ET-1 and held back PASMC from static phase (G0/G1) to DNA synthesis (S) and mitotic phase (G2/M) in the dose-dependent manner.Glibenclimide blocked the effects of pinacidil on [3H]-TdR incorporation. CONCLUSION: Pinacidil has an inhibitive effect on PASMC proliferation induced by ET-1 through activating ATP sensitive potassium (KATP) channels and KATP channels might play an important pathophysiologic role in the vascular remodeling.Pinacidil is a promising candidate in the treatment of pulmonary hypertension.

Key words: pinacidil, pulmonary arterial smooth muscle cell, endothelin-1, ATP sensitive potassium channels

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