In vitro developmental competence of prepubertal goat oocytes cultured with recombinant activin-A
Hammami, Sondes (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)
Izquierdo Tugas, Ma. Dolors (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)
Català, Maria-Gracia (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)
Paramio, María Teresa (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)
Morató, Roser (Universitat Autònoma de Barcelona. Departament de Medicina i Cirurgia Animals)

Date:	2014
Abstract:	The present study was designed to evaluate the effect of activin-A during the in vitro oocyte maturation (IVM) and in vitro embryo culture (IVC) on nuclear maturation, blastocyst yield and blastocyst quality of prepubertal goat oocytes. In Experiment 1, three groups of oocytes were used during the IVM of prepubertal goat oocytes to determine the optimal concentration of recombinant human activin-A added to the maturation medium. Cumulus-oocyte complexes were matured in an IVM medium containing 0, 10 and 100 ng/ml (groups A0, A10 and A100), fertilized and in vitro cultured using standard procedures. In Experiment 2, the addition of 10 ng/ml activin-A at IVM (A10A0), IVC (A0A10) or IVM+IVC (A10A10) was studied and compared with the control group (A0A0). Results of the first experiment demonstrated that the addition of activin-A yielded similar percentages of maturation (⩽71. 0%) and blastocyst formation rates (⩽24. 9%) than the control group (A0). Experiment 2 showed that exposure of prepubertal goat oocytes to an IVC medium containing 10 ng/ml activin-A (A0A10) significantly increased the rates of development to the blastocyst stage, as compared with the control group (A0A0) (19. 5±2. 21% v. 13. 1±2. 37%, respectively; P<0. 05). With regard to the blastocyst quality, total number of cells, inner cell mass (ICM) and trophectoderm of prepubertal goat embryos produced in the presence of activin-A did not differ significantly among experimental groups. In summary, these results indicate that supplementation of the IVC medium with activin-A enhances embryo development of prepubertal goat oocytes.
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	In vitro maturation ; Nuclear stage ; In vitro culture ; Blastocysts ; Goat
Published in:	Animal, Vol. 8 Núm. 1 (2014) , p. 94-101, ISSN 1751-732X

DOI: 10.1017/S1751731113001936
PMID: 24176127

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