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The objective of this study was to assess the effect of rescue in vitro maturation and immediate intracytoplasmic sperm injection (ICSI) application on fertilisation success and early embryonic development of metaphase I (MI) oocytes. This was a retrospective cohort study including 2425 sibling oocytes in 259 ICSI cycles. ICSI was performed on 104 GV (germinal vesicle) oocytes which had reached the metaphase II (MII) stage (Group 1) and 231 MI oocytes which had reached the MII stage (Group 2) following IVM (in vitro maturation). Immediate ICSI was applied following oocyte aspiration on 292 MI stage (Group 3) and 1798 MII stage oocytes (Group 4). Normal fertilisation rates in Groups 1, 2, 3 and 4 were 51.9%, 39%, 30.1% and 59.5%, respectively. The rates of blastocyst development per oocyte and per zygote were calculated as 3.8%, 3.0%, 6.8%, 14.1% and 7.4%, 7.7%, 22.7%, 23.6% for Groups 1, 2, 3 and 4, respectively. The blastocyst development rate was significantly higher in the MI-ICSI group compared with other immature oocytes. Even though performing ICSI on the oocytes at the MI stage on the day of oocyte aspiration resulted in lower fertilisation rates, it was associated with significantly higher rates of blastocyst development. [ABSTRACT FROM AUTHOR]

OBJECTIVE: To elucidate the prognostic factors for intracytoplasmic sperm injection cycle cancellation in patients with endometriosis-related infertility. STUDY DESIGN: This was a retrospective cohort study and conducted at the Assisted Reproductive Technology center of Uludag University School of Medicine, between the years 2011-2017. The electronic database was screened and infertile patients with endometriosis, without male factor infertility, systemic disease, or undefined adnexal mass, and aged <40 were selected. The endometriosis phenotype of all cycles was classified into three subgroups: superficial endometriosis, ovarian endometrioma and deep infiltrating endometriosis. Cycles were divided into two groups: Group I (Cycle Cancellation) vs. Group II (Embryo transferred). RESULTS: Forty-four cycles were canceled and in 178 cycles, the embryo was able to be transferred. When the groups were compared age and day 3 FSH levels were statistically higher, and anti-Mullerian hormone and antral follicle count were statistically lower in Group I. The presence of adenomyosis was higher in Group I (64% vs. 40% p<0.01). The surgery rate with laparotomy was higher in Group I (54.5% vs. 13.5% p<0.01). Antral follicle count remained as the only independent factor associated with prognoses of the IVF cycle with binary logistic regression analysis. Cancellation rates were similar between the phenotypes of endometriosis. CONCLUSIONS: Poor ovarian reserve, advanced age, presence of adenomyosis, and history of laparotomy are negative prognostic factors associated with intracytoplasmic sperm injection cycle cancellation in endometriosis-related infertility. Antral follicle count is the only independent factor in predicting cycle cancellation. The phenotype of endometriosis does not affect the results. [ABSTRACT FROM AUTHOR]

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OBJECTIVE: To evaluate the correlation between the gene expression of prostaglandin-endoperoxide synthase-2 in the cumulus-oocyte complex with the level of prostaglandin-endoperoxide synthase-2 in follicular fluid and follicle diameter, oocyte maturation, and fertilization capacity. STUDY DESIGN: As the study group, 26 cumulus-oocyte complexes and 26 follicular fluids obtained from immature (n=10) or unfertilized mature oocytes (n=16) and as the control group, 26 cumulus complexes and 26 follicular fluids surrounding mature and fertilized oocytes were retrieved one by one totally from 32 patients in 32 intracytoplasmic sperm injection cycles. RESULTS: There was no significant efficacy of prostaglandin-endoperoxide synthase-2 gene expressions in cumulus complexes and the level of prostaglandin-endoperoxide synthase-2 in follicular fluids in terms of oocyte maturation stage. The level of prostaglandin-endoperoxide synthase-2 in follicular fluids and follicle diameters showed a significantly positive correlation in the mature and fertilized oocyte group (r=0.414; p=0.035). CONCLUSIONS: Although the prostaglandin-endoperoxide synthase-2 gene expressions in immature oocytes and their cumulus cells were similar to those in oocytes that have completed their nuclear and cytoplasmic maturation, the level of prostaglandin-endoperoxide synthases-2 in the follicular fluid and follicle diameter correlation may lead to new clinical approaches in cases of premature follicular rupture before oocyte maturation is completed. [ABSTRACT FROM AUTHOR]