The compromise of uterine receptivity is one of the main reasons for the failure of assisted reproduction techniques. Leukemia inhibitory factor is one of those molecular parameters that allow us to identify an endometrium as receptive. Platelet rich plasma (PRP) contains a range of cytokines and growth factors including leukemia inhibitory factor that encourage the migration, proliferation, and differentiation of cells. Treatments for antagonist ovarian stimulation were administered to 75 women under the age of 40, and 2-D power doppler ultrasound was used to guide the oocyte harvest. Patients were allocated into three groups according to the time of intrauterine infusion of PRP (no PRP, PRP at triggering day and PRP at ova pickup day). Power Doppler is utilized to measure endometrial thickness (ET), pulsatility index (PI), and resistance index (RI) of sub endometrial arteries, as well as serum levels of leukemia inhibitory factor (LIF). The mean endometrial thickness as well as serum level of LIF in PRP trigger group were higher, resistance index and pulsatility index were lower in a significant manner than control and PRP ova pickup group at all the days of study (triggering, ova pickup and embryo transfer days). These findings revealed that intrauterine PRP infusion on ova pick up day is associated with a significant increase in serum level of LIF that in turn enhances endometrial thickness for patients scheduled for intracytoplasmic sperm injection (ICSI).
The crosstalk between a receptive endometrium and a functional blastocyst during human embryo implantation is crucial for conception. Because platelets rich plasma (PRP) with concentrated platelets 4-5 times higher than normal, when release of granules containing growth factors including VEGF, TGF, PDGF, IGF, and EGF, these factors involved for sub endometrial angiogenesis and endometrial receptivity. 44 women under the age of 40 were given antagonist ovarian stimulation treatments, the oocytes were harvested utilizing 2-D power doppler ultrasound guidance, then ICSI done for them. On the hCG day all had an intrauterine autologous PRP infusion. Power Doppler is utilized to measure endometrial thickness (EnT), pulsatility index (PI), and resistance index (RI) of sub endometrial arteries, as well as serum levels of VEGF and EGF were measured on the hCG day and ovum pickup (OPU). The ultrasound findings, on the hCG day compared to those of OPU in all women with intrauterine infused autologous PRP were highly significant (HS). The mean EnT, RI, PI, VEGF and EGF at OPU day was lower than that on hCG day in a HS manner, with (p < 0.001), (p < 0.001), (p=0.047), (p < 0.001), and (p<0.001) respectively. These characteristics were shown to be significantly and independently associated to intrauterine PRP infusion. After PRP injection, both growth factors serum levels (VEGF and EGF) increased, and ultrasonography sub-endometrial metrics such as EnT, RI, and PI changed as the thickness grew while vascular resistance decreased, and all considered as predictors of endometrial receptivity.
For successful implantation, a high-quality embryo, receptive endometrium, and tight communication between the two are required. The lack of uterine contractions during embryo transfer is one of the characteristics that greatly affects endometrial receptivity. This is because it has been observed that ET may cause uterine contractions, which may be harmful to embryonic apposition and endometrial blood flow .The aim of this study was to assess how magnesium sulfate administration on the day of embryo transfer improve sub endometrial blood flow, endometrial receptivity, and increase implantation rate and clinical pregnancy rate . Eighty infertile women undergoing ART cycles participated in this prospective. Recombinant FSH (Gonal-F) was used in a controlled ovarian hyperstimulation technique. The first group A (n=40) got a 4gm infusion of magnesium sulfate, while the second placebo control group B (n=40) received 200ml of 5% glucose water as a placebo, respectively. While there were no significant changes in body mass index (BMI), endometrial thickness, number of transferred embryos, or embryo transfer day, significant variations were seen in patient mean age (p<0.001) and mean number of grades I embryo (P=0.003). It was significantly different after magnesium sulfate administration with the lowest value in magnesium sulfate group (P=0.024; P <0.001 and P <0.001 respectively). Implantation rate and clinical pregnancy rate both increased after drugs administration although it was non-significant (P= 0.106 and P= 0.348 respectively). It appears that magnesium sulfate injection before to embryo transfer can significantly increase sub endometrial vascularity and endometrial receptivity and improving implantation rate and clinical pregnancy rate non significantly in ICSI cycles by lowering uterine muscular