Ulipristal Acetate on Progesterone Levels and Glycodelin-A Endometrial Pattern

Summary

Controlled ovarian stimulation (COS) for FIV increases progesterone (P) and estradiol (E2) serum levels in supraphysiologic concentrations at the end of follicular phase. Elevated serum P levels leads to an accelerated endometrial maturation which interferes with the dialogue between embryo and endometrium. It has been reported that serum progesterone levels ≥ 1.5 ng/ml on the last day of COS are related to a significant decrease in the ongoing pregnancy rate following IVF cycles. Also, it has been reported a significant alteration in the endometrial gene expression profile related to P elevated levels. Glycodelin-A is an immunomodulatory glycoprotein synthesized by luteal-phase endometrial epithelium and its expression seems to be related to the action of P. Because glycodelin-A has immunosuppressive activity, it may facilitate the process of implantation and the maintenance of pregnancy. It is already know that ulipristal acetate (UPA) decrease serum P levels. The hypothesis of this study is that UPA is been able to modify P serum levels and glycodelin-A endometrial expression pattern on FSH/GnRH Antagonist cycles for FIV.

Timeline

Start

2011-07

Primary completion

2012-03

Completion

2012-06

Drugs

Indications