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In vitro maturation of human oocytes

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In vitro maturation of human oocytes

黃建榮

Lin YH;Hwang JL

摘要

Abstract

Immature human oocytes can be matured and fertilized in vitro. However, subsequent embryonic development is different when the immature oocytes are retrieved in different situations. Exposure to the LH surge in vivo may be important for the oocytes to acquire the competence for maturation and subsequent embryonic development. The size of the follicles may also be an important feature for subsequent embryonic development. However, the developmental competence of oocytes derived from small antral follicles does not seem to be adversely affected by the presence of a dominant follicle. Oocyte maturation in vitro is profoundly affected by culture conditions. Gonadotrophins are required for oocyte maturation in vivo, but any requirement in vitro is still unclear. Recent clinical results from in-vitro matured (IVM) human oocytes are promising, although further research remains to be done in order to address the mechanisms of oocyte maturation and to improve culture conditions and also the implantation rate of embryos generated from IVM oocytes.

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