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Semin Reprod Med 2005; 23(3): 242-247
DOI: 10.1055/s-2005-872452
Copyright © 2005 by Thieme Medical Publishers, Inc., 333 Seventh Avenue, New York, NY 10001, USA.

In Vitro Maturation of Oocytes

G. Durga Rao1 , 3 , Seang Lin Tan2 , 3
  • 1Clinical Research Fellow, McGill University, Royal Victoria Hospital, Montreal, Canada
  • 2James Edmund Dodds Professor and Chairman, McGill University, Royal Victoria Hospital, Montreal, Canada
  • 3Department of Obstetrics and Gynecology, McGill University, Royal Victoria Hospital, Montreal, Canada
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Publikationsverlauf

Publikationsdatum:
01. August 2005 (online)

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ABSTRACT

In vitro maturation of oocytes is a safe and effective treatment offered in some fertility centers for assisted reproduction, where immature oocytes are retrieved from unstimulated ovaries. Therefore, the procedure avoids ovarian stimulation with expensive gonadotropins, side effects of the medications, and risks such as ovarian hyperstimulation syndrome. Added advantages are reduced frequency of monitoring scans and shorter treatment regimen compared with in vitro fertilization. The candidates initially considered were women with polycystic ovaries having multiple antral follicles, but the indications are widening to include women with primarily poor quality embryos in repeated cycles and poor responders to stimulation. The two new applications for in vitro maturation we are now successfully implementing at McGill Reproductive Center are for oocyte donors and for fertility preservation, especially in women with cancer who are undergoing gonadotoxic therapy. In young women without partners needing this treatment for fertility preservation, it is combined with vitrification of the oocytes. We have achieved a 38% clinical pregnancy rate per cycle in women having IVM for infertility treatment up to the age of 35 years, and 50% clinical pregnancy rate per cycle in recipients of IVM egg donation.

KEYWORDS

In vitro maturation (IVM) - oocytes - polycystic ovaries - IVF

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Seang Lin TanM.B.B.S. 

Department of Obstetrics and Gynecology, McGill University, Royal Victoria Hospital

Women's Pavilion, F6.58, 687 Pine Avenue West

Montreal H3A 1A1, Canada

eMail: seanglin.tan@muhc.mcgill.ca