摘要
目的 :观察枳实和陈皮对兔离体主动脉平滑肌条张力的影响及其作用机理。方法 :用生理记录仪记录并观察加入枳实和陈皮水煎剂后 ,离体灌流血管条张力变化。结果 :枳实和陈皮可浓度依赖性地提高主动脉条张力 (r=0 .82 ,P <0 .0 0 1;r =0 .96 ,P <0 .0 0 1) ,枳实的作用明显强于同浓度陈皮。 10 -7mol/L酚妥拉明、10 -5mol/L异搏定及无钙Krebs液温育均可明显减弱陈皮和枳实的作用 ,但 10 -6mol/L苯海拉明无明显影响。去除内皮细胞后 ,10 -7mol/L阿托品可部分阻断枳实和陈皮的作用。结论 :枳实和陈皮可使兔主动脉平滑肌收缩 ,此作用可能与激活平滑肌细胞膜上的肾上腺素能α受体、胆碱能M受体及异搏定敏感Ca2 + 通道有关 ,并对胞外Ca2 + 有一定的依赖性 ;与平滑肌细胞膜上的组胺H1受体无关。
Objective: To study the effects of immature orange fruit(IOF) and dried tangerine peel(DTP) on the resting tension of isolated aortic muscle strips in rabbits and their mechanisms. Methods: The organ-bath was used to observe the response of aortic strip to IOF and DTP. Results: IOF and DTP dose-dependently increased the tension of aortic strip, and the action of IOF was more significant than that of the same concentration DTP. 10 -7 mol/L phentolamine, 10 -5 mol/L verapamil or incubation with Ca 2+ -free Krebs solution could block the effects of IOF and DTP partly, but 10 -6 mol/L diphenhydramine could not. In endothelium-removed aortic strips, the effects of IOF and DTP decreased after treatment with 10 -7 mol/L atropine. Conclusions: IOF and DTP can contract vascular smooth muscle, which probably contribute to α adrenergic receptor, cholinergic M receptor on membrane of vascular smooth muscle partly, and is dependent Ca 2+ influx through verapamil-sensitive Ca 2+ channels, but is not related to H 1 histamine receptor.
出处
《中成药》
CAS
CSCD
北大核心
2001年第9期658-660,共3页
Chinese Traditional Patent Medicine
基金
甘肃省中青年科技基金资助项目 (WS991 A2 3 0 11)
关键词
枳实
陈皮
主动脉平滑肌条
肌条张力
作用机理
immature orange fruit and dried tangerine peel
aortic smooth muscle string
tension
