目的探讨补肾活血方抑制卵巢早衰(POF)小鼠卵泡颗粒细胞凋亡的作用机制。方法以小鼠透明带3为抗原,皮下多点注射免疫BALB/c雌性小鼠建立免疫性POF模型。取40只清洁级雌性小鼠,随机分为空白组、模型组、阳性药组、补肾活血方组。补肾活...目的探讨补肾活血方抑制卵巢早衰(POF)小鼠卵泡颗粒细胞凋亡的作用机制。方法以小鼠透明带3为抗原,皮下多点注射免疫BALB/c雌性小鼠建立免疫性POF模型。取40只清洁级雌性小鼠,随机分为空白组、模型组、阳性药组、补肾活血方组。补肾活血方组给予补肾活血方药液灌胃,阳性药组给予戊酸雌二醇药液灌胃,模型组和空白组给予等量生理盐水灌胃,2次/d,连续15 d。取卵巢、子宫、胸腺进行称重,计算其脏器指数;HE染色观察颗粒细胞凋亡情况;采用放射免疫法检测雌二醇(E2)、促黄体生成激素(LH)和促卵泡生成激素(FSH)的水平;采用RT-PCR分析卵巢颗粒细胞中Fas、Fas-L m RNA表达情况。结果与空白组比较,模型组卵巢、胸腺、子宫质量和E2水平显著降低(P<0.05,P<0.01),FSH、LH水平和Fas、Fas-L m RNA表达显著升高(P<0.01);与模型组比较,给药组颗粒细胞凋亡明显减少,卵巢指数、子宫指数、胸腺指数增加(P<0.05),E2水平升高(P<0.01),FSH、LH水平及Fas、Fas-L m RNA表达明显降低(P<0.05,P<0.01)。结论补肾活血方可调节下丘脑-垂体-卵巢轴的激素水平,通过降低Fas、Fas-L的m RNA表达抑制细胞凋亡。展开更多
Only limited numbers of primordial follicles in mammalian ovary grow and differentiate to reach the stage of dominate follicles and ovulate. 99% of the follicles in the ovary undergo atresia at various stages of devel...Only limited numbers of primordial follicles in mammalian ovary grow and differentiate to reach the stage of dominate follicles and ovulate. 99% of the follicles in the ovary undergo atresia at various stages of development. Regulation of follicular growth, development and atresia is a complex process and involves interactions between endocrine factors and intraovarian regulators. This review summa-rized:ⅰ) FSH may not be a survival factor in regulating slow-growing preantral follicles. Some locally produced growth factors, activin and orphan receptors might play a more important role at this stage. ⅱ) Estrogen, activin/ inhibin and follistatin coordinate with FSH to regulate and control follicle differentiation. ⅲ) There are two types of follicular atresia induced by apoptosis which originates from GC or oocyte, respectively. Early translation of tPA mRNA into tPA protein in oocyte may be associated with oocyte apoptosis.展开更多
文摘目的探讨补肾活血方抑制卵巢早衰(POF)小鼠卵泡颗粒细胞凋亡的作用机制。方法以小鼠透明带3为抗原,皮下多点注射免疫BALB/c雌性小鼠建立免疫性POF模型。取40只清洁级雌性小鼠,随机分为空白组、模型组、阳性药组、补肾活血方组。补肾活血方组给予补肾活血方药液灌胃,阳性药组给予戊酸雌二醇药液灌胃,模型组和空白组给予等量生理盐水灌胃,2次/d,连续15 d。取卵巢、子宫、胸腺进行称重,计算其脏器指数;HE染色观察颗粒细胞凋亡情况;采用放射免疫法检测雌二醇(E2)、促黄体生成激素(LH)和促卵泡生成激素(FSH)的水平;采用RT-PCR分析卵巢颗粒细胞中Fas、Fas-L m RNA表达情况。结果与空白组比较,模型组卵巢、胸腺、子宫质量和E2水平显著降低(P<0.05,P<0.01),FSH、LH水平和Fas、Fas-L m RNA表达显著升高(P<0.01);与模型组比较,给药组颗粒细胞凋亡明显减少,卵巢指数、子宫指数、胸腺指数增加(P<0.05),E2水平升高(P<0.01),FSH、LH水平及Fas、Fas-L m RNA表达明显降低(P<0.05,P<0.01)。结论补肾活血方可调节下丘脑-垂体-卵巢轴的激素水平,通过降低Fas、Fas-L的m RNA表达抑制细胞凋亡。
基金supported by the National Natural Science Foundation of China(Grant Nos.30170452,39970284 and 90208025)the State“973”Program(Grant No.G1999055901)the Knowledge Innovation Project of the Chinese Academy of Sciences(Grant No.KSCX-SW-201).
文摘Only limited numbers of primordial follicles in mammalian ovary grow and differentiate to reach the stage of dominate follicles and ovulate. 99% of the follicles in the ovary undergo atresia at various stages of development. Regulation of follicular growth, development and atresia is a complex process and involves interactions between endocrine factors and intraovarian regulators. This review summa-rized:ⅰ) FSH may not be a survival factor in regulating slow-growing preantral follicles. Some locally produced growth factors, activin and orphan receptors might play a more important role at this stage. ⅱ) Estrogen, activin/ inhibin and follistatin coordinate with FSH to regulate and control follicle differentiation. ⅲ) There are two types of follicular atresia induced by apoptosis which originates from GC or oocyte, respectively. Early translation of tPA mRNA into tPA protein in oocyte may be associated with oocyte apoptosis.
