Human follicular fluid and mesenchymal stem cell conditioned medium improves in vitro development of vitrified-warmed mouse oocytes.

BACKGROUND In vitro maturation (IVM) and oocyte cryopreservation are therapeutic options in assisted reproductive technology which is used to preserve fertility in patients with different causes of infertility. OBJECTIVE To analyze in vitro development of vitrified-warmed oocytes in the presence of human follicular fluid (FF) and bone marrow mesenchymal stem cell-conditioned medium (BMSC-CM) as a rescue strategy in fertility preservation. MATERIALS AND METHODS BMSC-CM and FF media were used as two natural media. Not only osteogenic and adipogenic differentiation but also flow cytometry was carried out to confirm the nature of mesenchymal stem cells. A total of 327 vitrified-warmed oocytes were randomly assigned to three groups with different maturation media. After 24 h the maturation rate was evaluated. In vitro fertilization and also embryo development were also assessed. RESULTS Oocytes matured in the BMSC-CM and FF groups showed a significant increase compared to the control group (76.6+/-2.9, 53.2±1.0 , and 40.8+/-6.1, respectively) (P % 0.05). Embryo cleavage rates in the BMSC-CM were dramatically higher than FF and control groups (85.6+/-2.2, 70.5+/-2.2, and 60.7+/-1.5, respectively). Blastocyst formation rates in the BMSC-CM group were statically different compared to FF and control groups (73.6+/-1.0, 58.5+/-1.0, and 45.8+/-4.2, respectively). CONCLUSION BMSC-CM and FF media not only improve the maturation rate of vitrified warmed oocytes but also significantly increase embryo cleavage and blastocyst rates. DOI: 10.54680/fr23210110512.