caa a22 4500 445817119 CHVBK 20180317145232.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s10815-011-9677-7 doi (NATIONALLICENCE)springer-10.1007/s10815-011-9677-7 Oocyte morphology does not affect post-warming survival rate in an egg-cryobanking donation program [Elektronische Daten] [Amanda Setti, Rita Figueira, Daniela Braga, Renata Ferreira, Assumpto Iaconelli Jr., Edson Borges Jr.] 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. Springer Science+Business Media, LLC, 2011 Egg-cryobanking nationallicence Oocyte dysmorphism nationallicence Oocyte morphology nationallicence Oocyte quality nationallicence Oocyte vitrification nationallicence Setti Amanda Sapientiae Institute - Educational and Research Centre in Assisted Reproduction, Rua Vieira Maciel, 62, 04203-040, São Paulo, SP, Brazil aut Figueira Rita Fertility - Assisted Fertilisation Centre, Av. Brigadeiro Luis Antonio, 4545, 01401-002, São Paulo, SP, Brazil aut Braga Daniela Sapientiae Institute - Educational and Research Centre in Assisted Reproduction, Rua Vieira Maciel, 62, 04203-040, São Paulo, SP, Brazil aut Ferreira Renata Fertility - Assisted Fertilisation Centre, Av. Brigadeiro Luis Antonio, 4545, 01401-002, São Paulo, SP, Brazil aut Iaconelli Jr. Assumpto Sapientiae Institute - Educational and Research Centre in Assisted Reproduction, Rua Vieira Maciel, 62, 04203-040, São Paulo, SP, Brazil aut Borges Jr. Edson Sapientiae Institute - Educational and Research Centre in Assisted Reproduction, Rua Vieira Maciel, 62, 04203-040, São Paulo, SP, Brazil aut Journal of Assisted Reproduction and Genetics Springer US; http://www.springer-ny.com 28/12(2011-12-01), 1177-1181 1058-0468 28:12<1177 2011 28 10815 https://doi.org/10.1007/s10815-011-9677-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10815-011-9677-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Setti Amanda Sapientiae Institute - Educational and Research Centre in Assisted Reproduction, Rua Vieira Maciel, 62, 04203-040, São Paulo, SP, Brazil aut NATIONALLICENCE 700 1- Figueira Rita Fertility - Assisted Fertilisation Centre, Av. Brigadeiro Luis Antonio, 4545, 01401-002, São Paulo, SP, Brazil aut NATIONALLICENCE 700 1- Braga Daniela Sapientiae Institute - Educational and Research Centre in Assisted Reproduction, Rua Vieira Maciel, 62, 04203-040, São Paulo, SP, Brazil aut NATIONALLICENCE 700 1- Ferreira Renata Fertility - Assisted Fertilisation Centre, Av. Brigadeiro Luis Antonio, 4545, 01401-002, São Paulo, SP, Brazil aut NATIONALLICENCE 700 1- Iaconelli Jr Assumpto Sapientiae Institute - Educational and Research Centre in Assisted Reproduction, Rua Vieira Maciel, 62, 04203-040, São Paulo, SP, Brazil aut NATIONALLICENCE 700 1- Borges Jr Edson Sapientiae Institute - Educational and Research Centre in Assisted Reproduction, Rua Vieira Maciel, 62, 04203-040, São Paulo, SP, Brazil aut NATIONALLICENCE 773 0- Journal of Assisted Reproduction and Genetics Springer US; http://www.springer-ny.com 28/12(2011-12-01), 1177-1181 1058-0468 28:12<1177 2011 28 10815 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer