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维生素A酸对小鼠囊胚TGF-β1蛋白表达的影响

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摘要 目的:探讨TGF-β1细胞因子对着床前胚胎发育的作用,从而探讨ATRA对着床前期胚胎发育毒性作用,为其致畸机理提供实验依据。方法:通过促超排卵,获取妊娠3.5d小鼠囊胚,随机分成三组,即对照组(空白)、实验1组(含1μmol/L的ATRA)和实验2组(含10μmol/L的ATRA),分别培养在含0、1μmol/L和10μmol/L的ATRA的M199培养基中,培养24h,然后再吸出囊胚。用免疫组织化学S-P法,分别检测不同剂量组ATRA对小鼠囊胚TGF—β1蛋白表达的状况,利用HPIAS-2000图像分析系统测定TGF-β1蛋白在以上三组中表达的平均光密度和平均阳性面积率。结果:TGF-β1蛋白在囊胚细胞中的表达,实验1组与对照组囊胚TGF-β1蛋白表达的阳性面积率及平均光密度有显著性差异(P<0.01);实验2组与空白组和实验1组相比均存在显著性差异(P<0.01)。结论:细胞因子TGF-β1在胚胎发育的调节中发挥了重要作用。
出处 《数理医药学杂志》 2006年第5期470-472,共3页 Journal of Mathematical Medicine
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