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Updated: Jul 13, 2026
08:46
Fertility Preservation Through Oocyte Vitrification: Clinical and Laboratory Perspectives
Published on: September 16, 2021
Ovarian and oocyte cryopreservation.
Jacqueline Lornage1, Bruno Salle
1Service de Médecine de la Reproduction, Hôpital Edouard Herriot, Lyon bInstitut génomique de Lyon, Lyon, France. jlornage@yahoo.fr
Current Opinion in Obstetrics & Gynecology
|July 13, 2007
Summary
Ovarian and oocyte cryopreservation techniques are advancing, offering hope for fertility preservation. Whole ovary cryopreservation shows promise for longer-term ovarian function after transplantation.
Area of Science:
- Reproductive medicine and cryobiology.
- Oncofertility and fertility preservation.
Background:
- Cryopreservation of oocytes and ovarian tissue is crucial for fertility preservation in young women undergoing gonadotoxic treatments.
- Established methods include slow cooling/rapid thawing and vitrification for oocytes, and cryopreservation of ovarian cortex fragments.
Purpose of the Study:
- To provide an update on the progress of oocyte and ovarian cryopreservation techniques.
- To review advancements in slow cooling/rapid thawing and vitrification for oocytes.
- To discuss emerging research in whole ovary cryopreservation with vascular pedicle grafting.
Main Methods:
- Review of current literature on oocyte and ovarian cryopreservation techniques.
- Analysis of advancements in mature oocyte vitrification, including improved physiology and safety.
- Examination of studies on whole ovary freezing and its application in large-animal models.
Main Results:
- Mature oocyte vitrification shows significant improvements in physiology, safety, and clinical pregnancy rates.
- Whole ovary cryopreservation research is expanding, with successful live birth in a sheep following orthotopic graft with vascular anastomosis.
- Ovarian cortex fragment cryopreservation has resulted in two live births globally.
Conclusions:
- Oocyte and ovarian cryopreservation are essential for fertility conservation.
- While mature oocyte freezing techniques have improved, they still yield lower rates than embryo freezing.
- Whole ovary cryopreservation is a promising area, addressing limitations of ovarian cortex grafts and showing potential for restoring fertility.
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