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大蓟有抑制离体蛙心、兔心心率及心收缩力的作用。在对狗血压实验中见到大蓟可降低其血压而且具有快速耐受性,并可抑制BCO的加压反射,提示降压作用与抑制心率及心收缩力有关。
Daqi has the effect of inhibiting isolated frog heart, rabbit heart rate and cardiac contractility. In the dog’s blood pressure experiment, it was found that the big warts can lower their blood pressure and have rapid tolerance, and can inhibit the pressure reflex of BCO, suggesting that the antihypertensive effect is related to the inhibition of heart rate and cardiac contractility.