Pregnancy after immature oocyte donation and intracytoplasmic sperm injection

Fertility and Sterility
J L HwangY L Tsai

Abstract

To report a case of pregnancy from in vitro-matured primary oocytes fertilized by ICSI. The pregnancy occurred in a woman who was in an oocyte donation program; the woman's husband had normal sperm parameters. Case report. Private general hospital affiliated with a university hospital. A recipient with premature ovarian failure, a recipient's husband with normal sperm, and a pregnant woman who donated her oocytes. Aspiration of immature oocytes during cesarean section, in vitro culture for maturation, ICSI of matured oocytes, coculture of fertilized oocytes. Fertilization of oocytes by ICSI, and cleavage of embryos by Vero cell coculture. Two of seven immature oocytes became metaphase II oocytes, and both were fertilized by ICSI. The two zygotes were cocultured on Vero cells to become grade 1 two-cell embryos. Pregnancy was obtained after transfer. More studies are necessary to clarify whether ICSI can increase the fertilization rate of in vitro-matured primary oocytes, and to clarify the role of coculture in fertilization.

Citations

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