超排卵时卵泡发育数与颗粒细胞胰岛素样生长因子Ⅰ受体的表达

摘要

目的探讨超排卵周期卵泡发育数与颗粒细胞胰岛素样生长因子Ⅰ受体（IGF-ⅠR）表达的关系。方法根据取卵时卵泡发育数不同，将卵巢对超排卵药物的反应分为低反应型（卵泡数≤3个）、中反应型（卵泡数4～13个）和高反应型（卵泡数≥14个），分别为11、16、12例。采用逆转录聚合酶链反应（RT-PCR）和蛋白印迹（Western-blot）法分别测定3种反应类型的卵泡颗粒细胞IGF-ⅠR mRNA的表达量和IGF-ⅠR的含量。结果低反应型IGF-ⅠR mRNA表达量显著低于中、高反应型［相对积分值分别为1.70±0.23（±s，下同）、2.92±0.49和4.22±1.50，P<0.05）。低反应型与中反应型及高反应型相比，IGF-ⅠR含量也减少（相对吸光度分别为1.32±0.31、2.01±0.72和4.39±2.30），差异有显著性（P<0.05）。结论颗粒细胞IGF-ⅠR含量可能影响超排卵周期卵泡发育数。%Objective　To investigate the number of follicles and insulin-like growth factor I receptor (IGF-ⅠR) in stimulated cycles. Method　IGF-ⅠR mRNA and IGF-ⅠR in granulosa cells obtained during oocyte retrieval were respectively measured by reverse transcript polymerase chain reaction （RT-PCR） and Western blot technique. Results　The expression of IGF-ⅠR mRNA in poor responders (follicles≤3) was much lower than in normal responders (follicles 4～13) and high responders (follicles≥14) (1.70±0.23, 2.92±0.49,4.22±1.50 respectively). Similar results were obtained for IGF-ⅠR (1.32±0.31, 2.01±0.72, 4.39±2.31 respectively). Conclusion　The expression of IGF-ⅠR correlated with the effects of gonadotropin hormone on follicular development.