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本文通过动物离体肠和子宫平滑肌的实验，探讨槐白皮水提液对内脏平滑肌的影响。结果表明该药对家兔、大白鼠、小白鼠十二指肠有明显的抑制作用，但对豚鼠十二指肠却有兴奋作用，这种由于种属不同而出现差异的原因，有待进一步研究。槐白皮水提液对家兔、豚鼠、大白鼠未孕及已孕子宫平滑肌均有强大的抑制作用，此作用的机理可能是通过阻断缩宫素受体引起的。
In this paper, the effects of water extracts of Radix Paeoniae Rubra on visceral smooth muscle were studied through the experiments of isolated intestine and uterine smooth muscle of animals. The results showed that the drug had obvious inhibitory effects on the duodenum of rabbits, rats, and mice, but it had excitatory effects on the duodenum of guinea pigs. The reason for this difference due to different species needs further study. . The water extract of Radix Paeoniae Rubra has a strong inhibitory effect on rabbits, guinea pigs, and rats that have not been pregnant and pregnant uterus smooth muscle. The mechanism of this effect may be caused by blocking oxytocin receptors.