肾上腺素β受体激动剂对子宫平滑肌所致的抑制作用一般皆认为与β_2受体作用的结果。本实验分析小鼠子宫平滑肌的肾上腺素β亚型受体,以β_1选择性的去甲肾上腺素(NA)、无选择性的异丙基肾上腺素(ISO)及β_2选择性的舒喘灵(SAL)为激动剂,其pD_2值分别为7.34,8.43及7.30。其中ISO的pD_2值显著大于NA及SAL(p<0.01);NA与SAL的pD_2值无显著性差别(p>0.05),提示小鼠子宫 The inhibitory effects of adrenergic beta-agonists on uterine smooth muscle are generally considered as a result of the action of beta-2 receptors. In this study, the adrenaline β subtype receptor of mouse uterine smooth muscle was analyzed with β1-selective noradrenaline (NA), non-selective isoproterenol (ISO) and β2-selective salbutamol SAL) as agonist with pD_2 values ​​of 7.34, 8.43 and 7.30, respectively. Among them, pD_2 of ISO was significantly higher than that of NA and SAL (p <0.01); there was no significant difference of pD_2 between NA and SAL (p> 0.05)