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首页> 外文期刊>Molecular and Cellular Endocrinology >Basic fibroblast growth factor induces primordial follicle development and initiates folliculogenesis.
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Basic fibroblast growth factor induces primordial follicle development and initiates folliculogenesis.

机译:碱性成纤维细胞生长因子诱导原始卵泡发育并启动卵泡形成。

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The recruitment of primordial follicles to initiate folliculogenesis determines the population of developing follicles available for ovulation and directly regulates female reproductive efficiency. In the current study, a floating organ culture system was used to examine the progression of primordial (stage 0) follicles to developing (stages 1-4) follicles in 4-day-old pre-pubertal rat ovaries. Basic fibroblast growth factor (bFGF) was found to induce primordial follicle development similar to what has been demonstrated for kit ligand/stem cell factor (KL). The bFGF-treated ovaries contained 85% developing follicles compared with 50% developing follicles for control untreated organ cultures. Correspondingly, the number of primordial follicles in bFGF-treated ovaries decreased to 15% of the total compared with 45% for controls. A bFGF neutralizing antibody was found to decrease the small amount of spontaneous follicle development that occurs during the organ culture. Basic FGF was localized to primordial and early developing follicles by immunocytochemistry and was primarily observed in the oocytes. Treatment of bovine ovarian theca cells and stroma cells with bFGF was found to promote cell growth. Basic FGF produced by the oocyte in early stage follicles appears to act on adjacent somatic cells to promote cell growth and development. Basic FGF, like KL, appears to be a primordial follicle-inducing factor. In summary, bFGF can regulate primordial follicle development that directly influences female reproductive efficiency.
机译:原始卵泡的募集以启动卵泡形成决定了可用于排卵的发育中卵泡的数量,并直接调节女性的生殖效率。在当前的研究中,使用浮动器官培养系统检查4天大的青春期前大鼠卵巢中原始卵泡(0期)到发育卵泡(1-4期)的过程。发现碱性成纤维细胞生长因子(bFGF)诱导原始卵泡发育,类似于试剂盒配体/干细胞因子(KL)的表现。经bFGF处理的卵巢中含有85%的发育卵泡,而对照未处理的器官培养物中则含有50%的发育卵泡。相应地,经bFGF处理的卵巢中原始卵泡的数量下降至总数的15%,而对照组为45%。发现一种bFGF中和抗体可减少器官培养过程中发生的少量自发卵泡发育。碱性FGF通过免疫细胞化学定位在原始和早期发育的卵泡中,并且主要在卵母细胞中观察到。发现用bFGF处理牛卵巢theca细胞和基质细胞可促进细胞生长。卵母细胞在早期卵泡中产生的碱性FGF似乎作用于邻近的体细胞以促进细胞生长和发育。基本的FGF(如KL)似乎是原始卵泡诱导因子。总之,bFGF可以调节直接影响女性生殖效率的原始卵泡发育。

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