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Whole Sheep Ovary Cryopreservation: Evaluation of a Slow Freezing Protocol with Dimethylsulphoxide

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Publisher Springer
Date 2010 Sep 16
PMID 20842419
Citations 5
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Abstract

Purpose: To evaluate a slow freezing method for whole ovary cryopreservation by evaluating effects of added cryoprotectant.

Methods: Sheep ovaries were isolated during surgery, flushed with either Ringer-Acetate or dimethylsulphoxide and cryopreserved by slow freezing. After rapid thawing, viability was assessed by ovarian in vitro perfusion, cell culture, histology and fluorescent live-dead assay.

Results: Production of cyclic AMP and progesterone was slightly higher in the dimethylsulphoxide group. Cultured ovarian cells from dimethylsulphoxide-preserved ovaries secreted larger amounts of progesterone than cells from Ringer-Acetate preserved. Light microscopy of ovarian biopsies obtained after perfusion, revealed well-preserved tissue in the dimethysulphoxide group but not in the Ringer-Acetate group. The density of small follicles and ovarian cell viability were higher in dimethysulphoxide ovaries compared to Ringer-Acetate ovaries.

Conclusions: Equilibrium with its protective effect can be achieved by slow freezing protocol, with an additional protective effect by the presence of dimethylsulphoxide.

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Hossay C, Donnez J, Dolmans M J Clin Med. 2020; 9(10).

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