GnRH agonist treatment regulates IL-6 and IL-11 expression in endometrial stromal cells for patients with HRT regiment in frozen embryo transfer cycles.

To evaluate the effect of gonadotropin-releasing hormone agonist (GnRHa) pretreatment time on clinical outcomes of patients who underwent endometrial preparation in HRT cycles and the molecular mechanism in frozen-thawed embryo transfer (FET) cycles, we retrospectively chose 1143 cycles and separated four groups. Endometrial tissues were collected from 44 patients who were cancelled on the day of embryo transfer (there were 10 patients refused to collect endometrium) and were tested for endometrial receptivity marker mRNA and miR-124-3p expression. Furthermore, endometrial stromal cells (ESCs) were transfected to investigate the molecular mechanism.