Treatment of ovarian damage induced by chemotherapeutic drugs in female rats with G-CSF and platelet-rich plasma(PRP): an immunohistochemical study correlation with novel marker INSL-3.

OBJECTIVE: To assess the impacts of Platelet-Rich Plasma(PRP) and Granulocyte Colony-Stimulating Factor(G-CSF) on a rat model with induced ovarian follicular damage caused by cyclophosphamide(Cy). MATERIALS AND METHODS: Forty-two Sprague-Dawley rats were randomly allocated into seven distinct groups as; Group 1(control): NaCl intraperitoneal (IP) injection was administered on days D1, D7, and D14. Group 2(Cy):Cy IP injection on D1 + NaCl IP injection on D7 and D14 were administered. Group 3(PRP): PRP IP injection on D1,D7 and D14 were administered. Group 4(Cy + PRP):Cy IP injection on D1 and PRP IP injection on D1, D7 and D14 were administered. Group 5(G-CSF): G-CSF IP injection on D1, D7 and D14 were administered. Group 6(Cy + G-CSF):Cy IP injection on D1+ G-CSF IP injection on D1, D7 and D14 were administered. Group 7(Cy + PRP + G-CSF):Cy IP injection on D1+ PRP IP injection on D1,D7 and D14+ G-CSF IP injection on D1,D7 and D14 were administered. Follicular number, histological scores of AMH and INSL3 stained follicles at different stages of follicular development, and serum Anti-Müllerian hormone(AMH) were evaluated. RESULTS: The primary, secondary, and antral follicle intensity scores for AMH-positive staining were most prominent in Groups 3 and 5. There was no significant difference between groups 4, 6 and 7 compared to group 1 in terms of follicule counts and AMH staining. The intensity scores of AMH-positive staining follicles were notably reduced in group 2 compared to groups 4, 6, and 7, with a significant difference (p < .01). Among the groups, group 2 exhibited the least intense antral follicle staining for INSL3, displaying a significant difference(p < .01) compared to the remaining groups. CONCLUSIONS: Autologous PRP and G-CSF might protect ovarian function in the face of ovarian damage caused by Cy-induced effects.

The importance of serum progesterone concentration at embryo transfer day and effect of rescue additional progesterone during programmed artificial frozen embryo transfer cycles.

RESEARCH QUESTION: What is the efficacy and possible positive effect of additional rescue subcutaneous (s.c.) progesterone therapy for restoration of progesterone concentration on embryo transfer day and pregnancy rates during programmed artificial frozen embryo transfer (FET) cycles with vaginal progesterone tablet plus i.m. progesterone? DESIGN: Multicentre prospective cohort study (NCT04769401) including a total of 238 programmed artificial FET between February 2021 and September 2021. Patients were divided into ≥10 ng/ml and <10 ng/ml according to serum progesterone concentrations on embryo transfer day; 25 mg of s.c. progesterone was added to patients with <10 ng/ml; blood samples were taken 2 days later. The primary outcome was the ongoing pregnancy rate. RESULTS: The proportion of patients having ≥10 ng/ml serum progesterone concentrations on embryo transfer day was 70.7%. There was no statistically significant difference with regard to cumulative pregnancy rate, ongoing pregnancy rate and miscarriage between the groups (55.4% versus 61.5%, P = 0.4; 78.2% versus 72.5% per pregnancy, P = 0.5; 21.8% versus 27.5%, P = 0.5, respectively, ≥10 ng/ml and <10 ng/ml). Eighty-three per cent of patients with low serum progesterone concentrations on embryo transfer day reached an adequate progesterone concentration with rescue s.c. progesterone treatment; 90% of pregnancy rates in patients with serum progesterone concentrations <10 ng/ml on embryo transfer day were in patients who reached adequate serum progesterone concentrations with daily rescue s.c. progesterone treatment. CONCLUSIONS: The measurement of serum progesterone concentrations on embryo transfer day may create the opportunity for rescue progesterone administration on that day for patients who fail to reach adequate serum progesterone concentrations, achieving similar pregnancy rates without cancellation of the cycle.