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Related Experiment Videos

Does female age affect embryo morphology?

I Bar-Hava1, A Ferber, J Ashkenazi

  • 1Department of Obstetrics and Gynecology, Rabin Medical Center, Petah Tiqva, Israel.

Gynecological Endocrinology : the Official Journal of the International Society of Gynecological Endocrinology
|February 24, 2000
PubMed
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Maternal age does not impact embryo quality in standard in vitro fertilization (IVF). However, intracytoplasmic sperm injection (ICSI) cycles showed no association between female age and embryo morphology, suggesting age-related decline is not a universal factor.

Area of Science:

  • Reproductive biology
  • Embryology
  • Infertility research

Background:

  • Oocyte quality decline with maternal age is a primary concern for reduced implantation rates.
  • Previous research widely assumes age-related oocyte quality deterioration impacts embryo development.

Purpose of the Study:

  • To investigate the effect of maternal age on embryo morphology in standard in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI).
  • To determine if embryo quality, assessed by morphology, is influenced by female age in different assisted reproductive technologies.

Main Methods:

  • Analysis of 6350 embryos from IVF and ICSI cycles between January 1996 and June 1997.
  • Definition of high-quality embryos based on blastomere size, fragmentation, and cell cleavage rates.

Related Experiment Videos

  • Stratification of data for standard IVF, overall ICSI, and ICSI with severe male factor infertility.

    • Main Results:

    • A positive association was found between increasing maternal age and a higher proportion of good-quality embryos in standard IVF cycles.
    • No significant association between female age and embryo morphology was observed in ICSI cycles, including the subgroup with severe male factor infertility.

    Conclusions:

    • Embryo quality, as indicated by morphology, does not appear to deteriorate with increased maternal age in standard IVF.
    • The findings suggest that the impact of maternal age on embryo quality may differ between standard IVF and ICSI procedures.