Oocyte morphology does not affect post-warming survival rate in an egg-cryobanking donation program
Purpose To evaluate whether oocyte dysmorphisms affect oocyte survival rates in an egg-cryobanking donation program. Methods This study included 54 patients undergoing intracytoplasmic sperm injection. A total of 415 metaphase II oocytes were vitrified using the Cryotop method. Oocyte morphology was...
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Published in | Journal of assisted reproduction and genetics Vol. 28; no. 12; pp. 1177 - 1181 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Boston
Springer US
01.12.2011
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | Purpose
To evaluate whether oocyte dysmorphisms affect oocyte survival rates in an egg-cryobanking donation program.
Methods
This study included 54 patients undergoing intracytoplasmic sperm injection. A total of 415 metaphase II oocytes were vitrified using the Cryotop method. Oocyte morphology was assessed immediately prior to oocyte vitrification under 400× magnification. The influence of dysmorphisms on post-thaw survival rates was assessed using regression analysis. Results were considered to be significant at the 5% critical level.
Results
Oocyte survival rate was not affected by the presence of the following analysed oocyte abnormalities: increased cytoplasmic granularity, vacuoles in the ooplasm, aggregates of smooth endoplasmic reticulum in the ooplasm, large perivitelline space size, perivitelline space granularity, fragmented first polar body and zona pellucida abnormalities.
Conclusions
Oocyte morphology, observed prior to vitrification, does not predict post-warming survival. The non-invasive identification of predictive markers for oocyte survival potential remains a difficult task. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 ObjectType-Article-2 ObjectType-Feature-1 |
ISSN: | 1058-0468 1573-7330 |
DOI: | 10.1007/s10815-011-9677-7 |