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小鼠卵巢玻璃化冻存过程中FSH干预对 VEGF及VEGFR-2表达的影响

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Abstract:

目的通过在玻璃化冻存不同时段给予小鼠卵巢组织重组人促卵泡刺激素(rFSH)干预,观察rFSH对VEGF以及VEGFR-2表达的影响,探索卵巢玻璃化冻存过程中最佳的FSH保护途径。方法将4周龄C57BL/6J小鼠卵巢分为新鲜对照组(FCG)、玻璃化冻存对照组(VCG)、0.3IU?mL-1FSH干预玻璃化冻存组,包括全程添加FSH组(OG-FSH)、冻存前添加FSH组(BG-FSH)以及冻存后添加FSH组(AG-FSH)。通过形态学技术观察正常卵泡百分比;采用免疫组织化学技术观察卵巢不同细胞VEGF以及VEGFR-2的表达;通过Western-blot方法观察并分析不同玻璃化冻存时段的FSH干预对卵巢VEGF以及VEGFR-2蛋白表达量的影响。结果正常卵泡百分比、VEGF及VEGFR免疫组织化学和Western-blot检测结果组间比较差异均有统计学意义。其中,OG-FSH组各项检测指标均高于其他各组(P<0.05),且BG-FSH、AG-FSH组与FCG相似,高于VCG组(P<0.05)。结论玻璃化冻存全程添加FSH干预有利于提高正常卵泡数,以及VEGF、VEGFR-2蛋白的表达。

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