Artículos de revistas
The presence of acylated ghrelin during in vitro maturation of bovine oocytes induces cumulus cell DNA damage and apoptosis, and impairs early embryo development
Fecha
2017-09Registro en:
Sirini, Matias Angel; Anchordoquy, Juan Patricio; Anchordoquy, Juan Patricio; Pascua, Ana Malen; Nikoloff, Noelia; et al.; The presence of acylated ghrelin during in vitro maturation of bovine oocytes induces cumulus cell DNA damage and apoptosis, and impairs early embryo development; Cambridge University Press; Zygote; 9-2017; 1-11
0967-1994
CONICET Digital
CONICET
Autor
Sirini, Matias Angel
Anchordoquy, Juan Patricio
Anchordoquy, Juan Patricio
Pascua, Ana Malen
Nikoloff, Noelia
Carranza Martin, Ana Cristina
Relling, Alejandro Enrique
Furnus, Cecilia Cristina
Resumen
The aim of this study was to investigate the effects of acylated ghrelin supplementation during in vitro maturation (IVM) of bovine oocytes. IVM medium was supplemented with 20, 40 or 60 pM acylated ghrelin concentrations. Cumulus expansion area and oocyte nuclear maturation were studied as maturation parameters. Cumulus–oocyte complexes (COC) were assessed with the comet, apoptosis and viability assays. The in vitro effects of acylated ghrelin on embryo developmental capacity and embryo quality were also evaluated. Results demonstrated that acylated ghrelin did not affect oocyte nuclear maturation and cumulus expansion area. However, it induced cumulus cell (CC) death, apoptosis and DNA damage. The damage increased as a function of the concentration employed. Additionally, the percentages of blastocyst yield, hatching and embryo quality decreased with all acylated ghrelin concentrations tested. Our study highlights the importance of acylated ghrelin in bovine reproduction, suggesting that this metabolic hormone could function as a signal that prevents the progress to reproductive processes.