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观察５种具有活血化瘀作用的中药提取物对离体牛肺动脉交感神经刺激（Ｓｙｍｐａｔｈａｔｉｃｎｅｒｖｅｓｔｉｍ－ｕｌａｔｉｏｎ，ＳＮＳ）反应的影响，其中导紫董定对ＳＮＳ有显著抑制作用，６５４－２和三七皂甙的抑制作用较弱，而灯盏素和珠子参皂甙无明显影响．异紫董定的作用与其直接抑制血管平滑肌收缩性有关，其它药物的作用机理则有待进一步研究．
Observed the effect of five kinds of traditional Chinese medicine extracts with the effect of activating blood and removing blood stasis on the isolated bovine pulmonary artery sympathetic nerve stimulation (SNS) response, among which guided Zidongding had a significant inhibitory effect on SNS, 654-2 and notoginsenoside The inhibitory effect was weaker, while the lampalide and betelsaponin had no significant effect. The effect of idiopathic Dongding is directly related to the inhibition of contraction of vascular smooth muscle. The mechanism of action of other drugs needs further study.