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Related Experiment Videos

[Cocultures: diagnostic and therapeutic value]

L Janny1, P Vye, J L Pouly

  • 1Unité de FIV, Polyclinique Hôtel Dieu, Clermont-Ferrand.

Contraception, Fertilite, Sexualite (1992)
|May 1, 1993
PubMed
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Coculture in human IVF programs did not improve overall success rates but reduced multiple pregnancies. Delayed blastocyst transfer showed promise for patients with prior implantation failures.

Area of Science:

  • Reproductive Medicine
  • Embryology
  • In Vitro Fertilization (IVF)

Background:

  • Coculture techniques have been explored to enhance outcomes in human in vitro fertilization (IVF).
  • Understanding early embryo development is crucial for improving IVF success rates.

Purpose of the Study:

  • To evaluate the benefits of coculture in human IVF programs.
  • To assess the impact of delayed blastocyst transfer on pregnancy rates.
  • To investigate the influence of sperm quality and cryopreservation on embryo development.

Main Methods:

  • Prospective randomized study comparing day 2 and day 6 embryo transfer in IVF.
  • Analysis of coculture's effect on pregnancy and multiple birth rates.
  • Evaluation of delayed blastocyst transfer in patients with recurrent implantation failure.

Related Experiment Videos

  • Assessment of frozen-thawed blastocyst transfer outcomes.
  • Examination of early embryo development with compromised sperm characteristics or donor sperm.

    • Main Results:

    • Coculture did not improve overall IVF success but reduced high-order multiple pregnancies.
    • Delayed blastocyst transfer achieved a 39% clinical pregnancy rate in patients with over 4 previous transfer failures.
    • Frozen-thawed blastocyst transfers resulted in 17.8% ongoing pregnancies.
    • Compromised sperm quality or donor sperm affected embryo development, making it independent of fertilization rate.

    Conclusions:

    • Coculture may reduce multiple pregnancies in IVF without improving overall success.
    • Delayed blastocyst transfer is a viable strategy for patients with multiple IVF failures.
    • Coculture aids in understanding early embryo development, particularly with suboptimal sperm parameters.