左归饮对围绝经期大鼠卵巢促卵泡激素受体表达的影响及机制

目的探讨左归饮对围绝经期大鼠卵巢促卵泡激素受体(follicle-stimulating hormone receptor,FSHR)表达的影响及机制。方法采用围绝经期大鼠动物模型,分别给予低、中、高剂量左归饮灌胃处理8周,用RT-PCR和免疫组化法检测卵巢FSHR mRNA及蛋白的表达。未成年大鼠注射孕马血清后收集培养卵巢颗粒细胞,用RT-PCR方法检测给予不同处理因素后FSHR mRNA的表达水平。结果(1)围绝经期大鼠卵巢FSHR的表达明显低于青年组(P0.01),给予不同剂量左归饮处理后,FSHR表达均显著升高(P0.01)。(2)培养颗粒细胞给予不同处理因素,结果显示,与对照组相比,左归饮提取物可促进FSHR mRNA表达(P0.01);与单纯加入左归饮提取物相比,同时加入左归饮提取物和福司考林(Forskolin)可进一步促进FSHR mRNA的表达(P0.01),同时加入左归饮提取物和酪氨酸蛋白激酶抑制剂Genistein则能明显削弱左归饮的促进作用。结论左归饮可通过上调围绝经期大鼠卵巢FSHR的表达,提高卵巢对卵泡刺激素的反应性,改善围绝经期卵巢功能。左归饮对FSHR mRNA表达的促进作用可能是通过激活腺苷酸环化酶-蛋白激酶A(cAMP-PKA)及酪氨酸蛋白激酶途径实现的。

Effect of Zuoguiyin on the Expression of Ovarian Follicle-stimulating Hormone Receptor in Rats during Peri-menopausal Period

ObjectiveTo investigate the effect and mechanism of Zuoguiyin(ZGY,a Chinese medical remedy for regulating qi and nourishing yin) on expression of ovarian follicle-stimulating hormone receptor(FSHR) in rats during peri-menopausal period(PMP).MethodsPMP rats were administered with low(13.78 g/kg),middle(20.67 g/kg) and high(31.00 g/kg) dose ZGY respectively by gastrogavage for eight weeks.FSHR mRNA and protein expressions were detected by RT-PCR and immunohistochemistry respectively.Besides,granulosa cells,co...