Abstract
Background: Maternal age influenced the quantity and quality of oocytes. The composition of follicular fluid was changed in advanced maternal age. This study was conducted to evaluate changes in redox potential and blastocyst formation potential in older women. Methods and materials: Retrospective study collected data from December 2020 to October 2023 on patients treated with in vitro fertilization with follicular fluid surveyed at the Center for Reproductive Endocrinology and Infertility (HUECREI), Hue University of Medicine and Pharmacy, Hue. Results: Two cohorts comprised the 456 patients: Group 1, consisting of individuals younger than 35 years of age, and Group 2, comprising those 35 years or older. Anti-Müllerian hormone (AMH), initial follicle-stimulating hormone (FSH), and total FSH dose utilized differed significantly between Groups 1 and 2, with median values of 3.79 versus 2.10 ng/mL (P value < 0.001), 225.00 versus 277.50 IU/L (P value < 0.001), and 2025.00 versus 2325.00 IU/L (P value < 0.001), respectively. However, there were no significant differences in ORP, maturation rate, fertilization rate, or blastocyst formation rate between the two age groups. Variations in ORP were only observed among subgroups of patients with the ability to achieve an expected fertilization rate of ≥ 70% in Group 1. Specifically, the subgroup meeting expectations had a lower ORP of 83.00 ± 83.00 mV, in contrast to the non-expectation group which had an ORP of 96.14 ± 83.00 mV, accompanied by a P value of 0.005. The difference of ORP was not observed in the group that reached and did not reach the benchmark embryo formation ≥ 60% in the two age groups. Conclusion: Advanced maternal age have declined in ovarian function but no statistically significant difference in redox potential in follicular fluid has been observed. The fertilization rate and blastocyst formation rate were equivalent across the two age groups of women. The redox potential of follicular fluid was not statistically significant difference between cycles that reached and did not reach the benchmark of blastocyst formation ≥ 60% in the two age groups of women. Key words: Blastocyst, advanced maternal age, oxidative-reduction potential (ORP), in vitro fertilization.
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