@article { author = {Dorostghoal, Mehran and Ghaffari, Hamid-o-allah and Moramezi, Farideh and Keikhah, Narjes}, title = {Overexpression of Endometrial Estrogen Receptor-Alpha in The Window of Implantation in Women with Unexplained Infertility}, journal = {International Journal of Fertility and Sterility}, volume = {12}, number = {1}, pages = {37-42}, year = {2018}, publisher = {Royan Institute, Iranian Academic Center for Education Culture and Research (ACECR)}, issn = {2008-076X}, eissn = {2008-0778}, doi = {10.22074/ijfs.2018.5118}, abstract = {Background Failure in the endometrial receptivity may account for a significant number of infertility cases including unexplained infertility in women. Reduction in the endometrial estrogen receptor-alpha (ER-α) expression during implantation may be a critical event that coincides with the expression of specific genes and the formation of a receptive endometrium. The aim of the present study was to assess the expression of ER-α in the mid-secretory phase in the endometrium of women with unexplained infertility. Materials and Methods This case-control study was carried out on randomly selected fertile (n=10) and infertile (n=16) women whose source of infertility remained unexplained. We evaluated the expression of ER-α and glycode-lin-A (GdA) through mRNA level measurement with real-time polymerase chain reaction (PCR) in the endometrium of fertile women and patients suffering from unexplained infertility and fertile women. Endometrial biopsies of each subject were collected during a single menstrual cycle 7 days after the peak of luteinizing hormone (LH+7). Results Endometrial expression level of ER-α was significantly (P < 0.05) higher in the patients with unexplained infertility compared to the control. Significantly (P < 0.05) lower levels of GdA expression were seen in women with unexplained infertility. A statistically non-significant negative correlation was observed between ER-α and GdA mRNA expression. Conclusion Our findings demonstrate that reduction in the endometrial GdA expression is associated with elevated expression of ER-α in mid-luteal phase. Disruption in the endometrial ER-α expression, which leads to defects in uterine receptivity, may contribute to unexplained infertility.}, keywords = {Estrogen receptor,α,Glycodelin,A,implantation}, url = {https://www.ijfs.ir/article_45463.html}, eprint = {https://www.ijfs.ir/article_45463_a0520d50c72d3cc37f96569e5f1bac50.pdf} }