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中国临床药理学与治疗学 ›› 2004, Vol. 9 ›› Issue (1): 96-99.

• 研究原著 • 上一篇    下一篇

溴化异丙托品和沙丁胺醇舒张气管平滑肌叠加作用的离体研究

李惠萍, 白春学1, 吴淦桐2, 卢中秋   

  1. 温州医学院附属第一医院急诊科, 温州 325000, 浙江;
    1复旦大学附属中山医院肺科, 2复旦大学基础医学院药理教研室, 上海 200032
  • 收稿日期:2003-05-18 修回日期:2003-07-22 出版日期:2004-01-26 发布日期:2020-11-16
  • 通讯作者: 白春学,男, 博士生导师, 教授。E-mail: cxbai@zshospital.com
  • 作者简介:李惠萍, 女, 医学硕士, 主治医生, 研究方向:主要从事急诊危重病研究。Tel:0577-88863999  E-mail:lhp@hosp1.ac.cn

Combined effects of salbutamol and ipratropium bromide on relaxing tracheal muscle in vitro

LI Hui-Ping, BAI Chun-Xue1, WU Gan-Tong2, LU Zhong-Qiu   

  1. Department of Emergency, theFirst Affiliated Hospital, Wenzhou Medical College, Wenzhou 325003, Zhejiang, China;
    1Department of Pulmonary Medicine of Zhongshan Hospital, 2Department of Pharmacology of College of Basic Medical Science, Fudan Medical University, Shanghai 200032, China
  • Received:2003-05-18 Revised:2003-07-22 Online:2004-01-26 Published:2020-11-16

摘要: 目的: 体外比较单用及合用溴化异丙托品和沙丁胺醇对乙酰胆碱、组胺、氯化钾诱导的离体豚鼠气管条收缩作用的影响。方法: 用溴化异丙托品孵育前后组胺、乙酰胆碱、KCl 诱发的豚鼠离体气管条的收缩;用沙丁胺醇孵育前后组胺、KCl 诱发的豚鼠离体气管条的收缩;溴化异丙托品和沙丁胺醇合用对组胺、乙酰胆碱和KCl 诱导的豚鼠气管条收缩的影响。结果: 乙酰胆碱、组胺诱导离体豚鼠气管条收缩, 呈典型的剂量反应效应, pD2 (达到50 %最大反应的激动剂浓度) 分别为5.97 ±0.21, 6.48 ±0.54,用溴化异丙托品孵育后, 其量效曲线压低, pD′2 (拮抗剂效价强度) 分别为7.99 ±0.34, 7.37 ±0.36;加用沙丁胺醇后, 其量效曲线进一步压低。组胺10-8mol·L-1 引起豚鼠气管条收缩, 10-4mol·L-1 达最大反应, pD2 为6.60 ±0.70;用沙丁胺醇孵育后,其量效曲线压低, pD′2 为6.06 ±0.27 。加用溴化异丙托品6 ×10-8 mol·L-1孵育后, 其量效曲线明显压低(P<0.01) 。氯化钾6 0 mmol·L-1 诱导气管条收缩, 溴化异丙托品和沙丁胺醇抑制其收缩, 其IC50(抑制50 %最大反应的拮抗剂浓度) 分别为4.78 ×10-6, 3.18 ×10-6 mol·L-1 。两者合用, 其抑制作用明显增强(P<0.01) 。结论: 溴化异丙托品和沙丁胺醇均能抑制乙酰胆碱、组胺、氯化钾诱导的离体豚鼠气管条收缩, 两者合用比单一应用具有更强的支气管扩张作用。

关键词: 溴化异丙托品, 沙丁胺醇, 豚鼠, 气管条, 乙酰胆碱

Abstract: AIM: To study the effects of ipratropium bromide (IB) with and without salbutamol (Sal) on the contraction of guinea pig tracheal strips induced by acetylcholine, histamine and potassium chloride in vitro.METHODS: The contraction of guinea pig tracheal strips induced by His, ACh and KCl before and after being incubated with ipratropium bromide;the contraction of guinea pig tracheal strips induced by His, and KCl before and after being incubated with salbutamol;the inhibitory effect of ipratropium bromide with salbutamol on the contraction of guinea pig tracheal strips induced by histamine and KCl.RESULTS: ACh (0.01- 1 mmol·L-1) caused concentration-dependent contractions of tracheal strips and the resulting concentration-response curve was classical, the values of pD2 were 5.97 ±0.21, 6.48 ± 0.54, respectively.IB depressed the concentration-response curve with pD′2 values of 7.99 ±0.34 and 7.37±0.36, respectively.After adding Sal, the curve was further depressed.His (0.01 μmol·L-1) caused the contraction of tracheal strips and its maximal response was obtained in 0.1 mmol·L-1, the pD2 value was 6.60±0.70.After incubated with Sal, the concentration-response curve was depressed, and the pD′2 value was 6.06±0.27.Adding IB, the curve was further depressed. KCl (60 mmol·L-1) induced contraction on tracheal strips, IB and Sal depressed the contraction with IC50 values of 4.78 ×10-6 and 3.18 ×10-6mol·L-1, respectively.With combination of IB and Sal, the inhibitory effect was significantly enhanced (P<0.01).CONCLUSION: Either IB or Sal has a significant inhibitory effect on the contraction of tracheal strips induced by KCl, Ach and His.The effect is stronger in a combination with IB and Sal than that each alone.

Key words: ipratropium bromide, salbutamol, guinea pig, tracheal strip, acetylcholine

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