内源性阿片能调节与妊娠有关的痛觉减退作用,同时妊娠期间β-内啡肽含量升高,催产素的分泌亦增加。有报道该激素也具有镇痛效应,本文作者用浸尾法,将妊娠着鼠尾部浸于55℃热水中观察8秒钟并记录大鼠摆尾运动出现的潜伏期(TFL〕,做为痛觉敏感性的指标。实验中,先测定10 Endogenous opioids regulate pregnancy-related analgesia and increase beta-endorphin levels and oxytocin secretion during pregnancy. It has been reported that the hormone also has analgesic effect. The authors used the immersion method to observe the tails of pregnant rats immersed in hot water at 55 ° C for 8 seconds and recorded the latency (TFL) of rat tail-twitching movements as pain sensation Sensitivity index in the experiment, the first determination of 10