Acta Biologica Hungarica

, Volume 57, Issue 3, pp 331–338 | Cite as

Correlation between First Polar Body Morphology and Further Embryo Development

  • P. Fancsovits
  • Zsuzsa G. Tóthné
  • Á. Murber
  • F. Z. Takács
  • Z. Papp
  • J. Urbancsek


First polar body (PB) morphology of human oocytes can indicate further embryo development and viability. However, controversial data have been published in this topic. Our retrospective study analyses the fertilization and further development of oocytes in relation to different morphological features of the first PB. The morphology of 3387 MII oocytes from 522 in vitro fertilization (IVF) treatments were assessed before intracytoplasmic sperm injection (ICSI). Oocytes were classified according to their first PB morphology. Assessment of fertilization and embryonic development (cell number, embryo grade, amount of anuclear fragmentation and presence of multinucleated blastomeres) was performed 16–20 and 42–48 hours after ICSI. Our results show that fertilization rate and embryo quality is influenced by PB morphology, while speed of development is not affected by the morphology of the first PB. Contrary to previous findings, our results suggest that oocytes with a fragmented PB had a higher developmental ability than those with an intact PB. However, we observed a lower viability of oocytes with a large PB. Since there are contradictions in this and previous observations, an extensive study is needed with standard hormonal stimulation protocol and oocyte evaluation criteria.


First polar body oocyte quality embryo quality in vitro fertilization 


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© Akadémiai Kiadó, Budapest 2006

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  • P. Fancsovits
    • 1
  • Zsuzsa G. Tóthné
    • 1
  • Á. Murber
    • 1
  • F. Z. Takács
    • 1
  • Z. Papp
    • 1
  • J. Urbancsek
    • 1
  1. 1.First Department of Obstetrics and GynaecologySemmelweis UniversityBudapestHungary

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