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Morphological differences in human zygotes and embryos cultured in different media

Published online by Cambridge University Press:  30 November 2011

Raquel Di Falco Cossiello ,
Alexandros Aggelis ,
Daniel Faúndes  and
Carlos A. Petta
Raquel Di Falco Cossiello
Affiliation:
Campinas Center of Human Reproduction, Campinas, São Paulo, Brazil.
Alexandros Aggelis
Affiliation:
Campinas Center of Human Reproduction, Campinas, São Paulo, Brazil.
Daniel Faúndes
Affiliation:
Campinas Center of Human Reproduction, Campinas, São Paulo, Brazil.
Carlos A. Petta*
Affiliation:
Campinas Center of Human Reproduction, Rua Eduardo Lane 380, 13073–002 Campinas SP, Brazil. Department of Obstetrics and Gynecology, University of Campinas, Campinas, São Paulo, Brazil.
*
All correspondence to: Carlos A. Petta. Campinas Center of Human Reproduction, Rua Eduardo Lane 380, 13073–002 Campinas SP, Brazil. e-mail: cpetta@me.com
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Summary

Purpose: To compare the effects of four culture media on the quality of human zygotes and embryos. Methods: Prospective study analyzing 2289 human embryos cultivated simultaneously in two different culture media: HTF, the default medium, with either Universal IVF, Global or IVF-30 as the secondary media. The sibling oocytes by each patient were randomly divided between the two culture media following intracytoplasmic sperm injection (ICSI). On day 1 the pronuclear stage of zygotes were evaluated and on day 2 embryos were evaluated according to the number of cells, percentage of fragmentation and number of nuclei. Z-test and odds ratios were used in the statistical analysis. Results: There was a higher percentage (55.2%) of class A1 + A2 zygotes with IVF-30 compared with HTF, Global or Universal IVF media (49.1%, 44.7% and 44.2%, respectively). The percentage of Top embryos was significantly higher with Global (40.2%) compared with HTF (21.3%), IVF-30 (25.0%) or Universal IVF media (11.2%). Conclusions: Global medium produced more Top embryos evaluated on day 2 of development.

Keywords

Culture mediaEmbryonic developmentPronuclear stage
Type
Research Article
Information
Zygote , Volume 20 , Issue 4 , November 2012 , pp. 399 - 405
Copyright
Copyright © Cambridge University Press 2011

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