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Related Experiment Videos

In vitro blastocyst development from serially split mouse embryos and future implications for human assisted

Karl Illmensee1, Khalied Kaskar, Panayiotis M Zavos

  • 1Reprogen Ltd., Limassol, Cyprus.

Fertility and Sterility
|September 12, 2006
PubMed
Summary

Serial embryo splitting in mice is effective for blastocyst development up to the second split. Third splitting significantly reduces development rates, indicating limited benefit for further multiplication in assisted reproduction.

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Area of Science:

  • Developmental Biology
  • Reproductive Science
  • Embryology

Background:

  • Embryo splitting is a technique used to increase the number of embryos.
  • Understanding the efficacy of serial splitting is crucial for optimizing assisted reproductive technologies.

Purpose of the Study:

  • To evaluate the efficiency of serial embryo splitting on blastocyst development in mice.
  • To determine the optimal number of serial splits for maximizing embryo development.

Main Methods:

  • Prospective study involving serial biopsy and splitting of mouse embryos (B6C3F-1 x B6D2F-1) at two-, four-, and six-cell stages.
  • Embryos underwent up to three serial splits, with blastocyst development rates assessed after each splitting event.

Main Results:

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  • First splitting yielded high blastocyst rates (74.3% to 75.0%).
  • Second splitting showed reduced rates (62.6% to 71.8%), with further significant decreases after the third split (10.6% to 48.4%).
  • Third splitting demonstrated minimal to no advantage for blastocyst development.

Conclusions:

  • Serial embryo splitting is effective for blastocyst development up to the second stage.
  • Third serial splitting offers no significant benefit and reduces developmental potential.
  • This study provides insights into serial embryo splitting in mammals with potential applications in human assisted reproduction.