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期 刊 ：中国中药杂志 1994年 19卷 06期 页码：365.

关键词：白花前胡石油醚提取物；离体气管平滑肌；乙酰胆碱；氯化钾；

Keywords:petroleum ether extract of Pettcedanum praeuptorum, trachea smooth muscles, acetylcholine, potassium chloride,

摘 要 ：白花前胡石油醚提取物能抑制乙酰胆碱和氯化钾所致气管平滑肌收缩,而且能使乙酰胆碱收缩气管平滑肌的量效曲线右移,使最大反应降低,其作用为剂量依赖性。

Abstract:The contractions of isolated rabbit trachea smooth muscles by acetylcholine and potassium chIoride were atten。uated by petroleum ether extract of Peucedanum praeruptorum pretreatment. The dose-effect curve of acetylcholinevvas shifted to the right,and the maximal response was diminished. The effect was non-competitive and dosed-depen

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