In vitro maturation medium supplementation: utilization of repaglinide, L-carnitine, and mesenchymal stem cell-conditioned medium to improve developmental competence of oocytes derived from endometriosis mouse models.
Braz J Med Biol Res 2022;
55:e11948. [PMID:
35588526 PMCID:
PMC9054032 DOI:
10.1590/1414-431x2022e11948]
[Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 02/23/2022] [Indexed: 11/21/2022] Open
Abstract
Endometriosis (EMS) is one of the most prevalent causes for female infertility.
Herein, we investigated the effect of the repaglinide (RG), L-carnitine (LC),
and bone marrow mesenchymal stem cell-conditioned medium (BMSC-CM)
supplementation during in vitro maturation (IVM) on the
quality, maturation, and fertilization rates, as well as embryonic quality and
development of oocytes derived from normal and EMS mouse model. Immature oocytes
were collected from two groups of normal and EMS-induced female NMRI mice at 6-8
weeks of age. Oocytes were cultured in IVM medium unsupplemented (control
group), or supplemented with 1 M RG, 0.3 and 0.6 mg/mL LC, and 25 and 50%
BMSC-CM. After 24 h of oocyte incubation, IVM rate and antioxidant status were
assessed. Subsequently, the rates of fertilization, cleavage, blastulation, and
embryonic development were assessed. Our results demonstrated that
supplementation of IVM medium with LC and BMSC-CM, especially 50% BMSC-CM,
significantly enhanced IVM and fertilization rates, and markedly improved
blastocyst development and total blastocyst cell numbers in EMS-induced mice
compared to the control group (53.28±0.24 vs 18.09±0.10%).
Additionally, LC and BMSC-CM were able to significantly modulate EMS-induced
nitro-oxidative stress by boosting total antioxidant capacity (TAC) and
mitigating nitric oxide (NO) levels. Collectively, LC and BMSC-CM
supplementation improved oocyte quality and IVM rates, pre-implantation
developmental competence of oocytes after in vitro
fertilization, and enhanced total blastocyst cell numbers probably by
attenuating nitro-oxidative stress and accelerating nuclear maturation of
oocytes. These outcomes may provide novel approaches to refining the IVM
conditions that can advance the efficiency of assisted reproductive technologies
in infertile couples.
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