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首页> 外文期刊>Clinical and experimental obstetrics and gynecology >Influence of pretreatment of insulin on phosphorylation of extracellular receptor kinase by gonadotropin releasing hormone in cultured mouse granulosa gells
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Influence of pretreatment of insulin on phosphorylation of extracellular receptor kinase by gonadotropin releasing hormone in cultured mouse granulosa gells

机译:胰岛素对细胞外受体激酶培养的影响胰岛素蛋白胶凝蛋白在培养的小鼠颗粒胶凝中的影响

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Background: To investigate the influence of pretreatment of insulin on the phosphorylation of extracellular receptor kinase (ERK) by gonadotropin releasing hormone (GnRH) in cultured mouse granulosa cells. Materials and Methods: The granulosa cells from the mouse were collected simultaneously from the ovaries of gonadotropin-primed ICR female mice. Semi-quantitative reverse transcription-polymerase chain reaction (RT-PCR) was used to examine the expression of the receptors of GnRH and insulin. The granulosa cells were cultured with ten nM of insulin, ten nM of GnRH, and ten nM of insulin pretreatment before ten nM of GnRH. Western blotting was used for analysis of phosphorylation of ERK. Student Mest and Dunnett's comparison test were used for statistical analysis and statistical significance was defined as p < 0.05. Results: The authors confirmed the presence of receptors of GnRH and insulin in the mouse granulosa cells by RT- PCR. Both insulin and GnRH could activate ERK phosphorylation. Pretreatment of insulin for 30 minutes before GnRH treatment inhibited ERK phosphorylation by GnRH. Conclusion: Insulin might have a negative effect of GnRH regulation of mouse ovarian physiology by inhibition of GnRH activation of ERK. Based on these study results, the authors demonstrated the role of insulin as a delicate modulator of reproductive function.
机译:背景:探讨胰岛素对培养的小鼠颗粒细胞促进激素(GnRH)对细胞外受体激酶(ERK)的预处理对细胞外受体激酶(ERK)的影响。材料和方法:从促性腺激素 - 灌注的ICR雌性小鼠的卵巢同时收集来自小鼠的甘蓝细胞。使用半定量逆转录 - 聚合酶链反应(RT-PCR)检查GnRH和胰岛素的受体的表达。将颗粒细胞用10nm的胰岛素,10nm的GnRH培养,并在10nm的GnRH之前进行10nm的胰岛素预处理。蛋白质印迹用于ERK的磷酸化分析。学生和Dunnett的比较试验用于统计分析,统计学显着性定义为P <0.05。结果:作者通过RT-PCR确认了小鼠颗粒细胞中GnRH和胰岛素的受体的存在。胰岛素和GNRH都可以激活ERK磷酸化。在GNRH处理前30分钟预处理胰岛素,通过GNRH抑制ERK磷酸化。结论:胰岛素可能对小鼠卵巢生理学的GNRH调控抑制ERK的抑制作用。根据这些研究结果,作者证明了胰岛素作为生殖功能精致调制器的作用。

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