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Spindle and chromosome configurations of in vitro-matured oocytes from polycystic ovary syndrome and ovulatory infertile women: a pilot study

  • Gamete Biology
  • Published:
Journal of Assisted Reproduction and Genetics Aims and scope Submit manuscript

Abstract

Purpose

To evaluate the meiotic spindle and chromosomal distribution of in vitro-matured oocytes from infertile nonobese women with PCOS and male or tubal causes of infertility (controls), and to compare in vitro maturation (IVM) rates between groups.

Methods

Seventy four patients (26 with PCOS and 48 controls) undergoing stimulated cycles of oocyte retrieval for ICSI were selected prospectively. Thirteen PCOS patients and 27 controls had immature oocytes retrieved submitted to IVM. After IVM, oocytes showing extrusion of the first polar body were fixed and processed for evaluation of the meiotic spindle and chromosome distribution by immunofluorescence microscopy.

Results

There were no differences between PCOS and control groups with respect to IVM rates (50.0% and 42.9%, respectively) nor the percentage of meiotic abnormalities in metaphase II oocytes (35.3% and 25%, respectively).

Conclusions

In vitro-matured oocytes obtained from stimulated cycles of nonobese PCOS did not have an increased ratio of meiotic abnormalities.

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Financial support

Rodolpho Cruz Vieira was supported by a scholarship granted by National Council of Research—CNPq—Brazil. CNPq 478396/2007-4

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Authors and Affiliations

  1. Departamento de Ginecologia e Obstetrícia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Av. Bandeirantes, 3900, 14049-900, Ribeirão Preto, São Paulo, Brazil

    Rodolpho C. Vieira, Ionara D. Barcelos, Elisa M. Ferreira, Wellington P. Martins, Rui A. Ferriani & Paula A. Navarro

  2. Escola de Ultra-songrafia e Reciclagem Médica de Ribeirão Preto (EURP), Ribeirão Preto, São Paulo, Brazil

    Wellington P. Martins

  3. Institutos Nacionais de Ciência e Tecnologia (INCT)—Hormônios e saúde da mulher—Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil

    Rui A. Ferriani & Paula A. Navarro

Authors
  1. Rodolpho C. Vieira
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  2. Ionara D. Barcelos
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  3. Elisa M. Ferreira
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  4. Wellington P. Martins
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  5. Rui A. Ferriani
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  6. Paula A. Navarro
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Corresponding author

Correspondence to Paula A. Navarro.

Additional information

Capsule

Preliminary data from a prospective controlled study did not demonstrate an increased ratio of meiotic abnormalities in in vitro-matured oocytes from nonobese PCOS women.

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Vieira, R.C., Barcelos, I.D., Ferreira, E.M. et al. Spindle and chromosome configurations of in vitro-matured oocytes from polycystic ovary syndrome and ovulatory infertile women: a pilot study. J Assist Reprod Genet 28, 15–21 (2011). https://doi.org/10.1007/s10815-010-9475-7

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  • DOI: https://doi.org/10.1007/s10815-010-9475-7

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