Developmental potential of in vitro or in vivo matured oocytes


Zygote , v. 23, n. 1, p. 93-98, 2015.

Motivo: Produção Colaborador HMV

Setor HMV: Nucleo Reprodução Humana

Área da saúde: Outro

Resumo: This study compared the embryological features of mature and immature oocytes (different stages) collected from stimulated cycles of in vitro fertilization (IVF). Immature oocytes were identified, classified as PI (prophase I - germinal vesicle, GV) or MI (metaphase I), were matured in vitro and fertilized using the intra-cytoplasmic sperm injection (ICSI) technique. Fertilization potential, cleavage, and subsequent transfer/cryopreservation of the embryos derived from these in vitro matured oocytes were compared with those of in vivo matured oocytes (collected at the MII stage). The characteristics of embryos derived from gametes recovered in the MI and MII stages were similar. The fertilization rate of immature oocytes recovered in PI was significantly lower than that of MII oocytes (P = 0.031), and the cleavage rate of the PI group was also lower than that of the MI (P = 0.004) and MII (P < 0.001) groups. In vitro maturation of MI oocytes is a suitable alternative when immature oocytes are recovered, as their characteristics and development are similar to those of in vivo matured oocytes. Optimization of outcomes for PI oocytes will require development of techniques that can distinguish which of these gametes will mature and fertilize.

Envie um e-mail para os autores

© Copyright 2010 Hospital Moinhos de Vento - Todos os Direitos Reservados

Hospital Moinhos de Vento - Rua Ramiro Barcelos 910 - Bairro Moinhos de Vento - Porto Alegre - RS , CEP: 90035-001 - Fone: (51) 3314 - 3434

Hospital Moinhos de Vento Iguatemi - Shopping Iguatemi 3º andar - Porto Alegre - RS, CEP: 91340-001 - Fone: (51) 3327 - 7000

Responsável Técnico - Dr. Luiz Antonio Nasi - CREMERS 11217

Fale Conosco | Ouvidoria | Trabalhe Conosco | Localize e Visite | Mapa do Site