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Free Content In Vitro 17ß-Oestradiol Release as a Marker for Follicular Survival in Cryopreserved Intact Bovine Ovaries

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Transplantation of cryopreserved intact ovaries from cancer patients is a technically challenging option for restoring fertility after sterilizing cancer therapy. In this paper we describe an assay based on 17ß-oestradiol (oestradiol) production, to monitor the functional damage sustained by the ovarian tissue during the freeze/thawing procedure. To this end, fresh bovine ovarian cortical biopsies were cultured in vitro for 7 days. As a control, the oestradiol release of biopsies that had sustained maximal cryodamage was analyzed. In addition the oestradiol release by cortical biopsies from two ME2SO perfused and cryopreserved intact ovaries was analyzed. Oestradiol production could be measured in culture supernatants, while oestradiol release of maximal cryo-damaged biopsies was at background levels. In vitro oestradiol release by cortical biopsies can be used as a functional marker for cryo-damage and indicates that our assay is suitable to optimize the cryopreservation procedure of intact ovaries.

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Document Type: Research Article

Publication date: July 1, 2010

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  • CryoLetters is a bimonthly international journal for low temperature sciences, including cryobiology, cryopreservation or vitrification of cells and tissues, chemical and physical aspects of freezing and drying, and studies involving ecology of cold environments, and cold adaptation

    The journal publishes original research reports, authoritative reviews, technical developments and commissioned book reviews of studies of the effects produced by low temperatures on a wide variety of scientific and technical processes, or those involving low temperature techniques in the investigation of physical, chemical, biological and ecological problems.

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