Clinically applied procedures for human ovarian tissue cryopreservation result in different levels of efficacy and efficiency
Publication year
2016Source
Journal of Assisted Reproduction and Genetics, 33, 12, (2016), pp. 1605-1614ISSN
Publication type
Article / Letter to editor
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Organization
Gynaecology
Health Evidence
Journal title
Journal of Assisted Reproduction and Genetics
Volume
vol. 33
Issue
iss. 12
Page start
p. 1605
Page end
p. 1614
Subject
Radboudumc 17: Women's cancers RIHS: Radboud Institute for Health Sciences; Radboudumc 18: Healthcare improvement science RIHS: Radboud Institute for Health SciencesAbstract
PURPOSE: Different protocols are being used worldwide for the cryopreservation of human ovarian tissue for fertility preservation purposes. The efficiency and efficacy of the majority of these protocols has not been extensively evaluated, possibly resulting in sub-optimally cryopreserved ovarian tissue. To address the impact of this issue, we assessed the effects of two clinically successful human ovarian tissue slow-freezing cryopreservation procedures on the quality of the cryopreserved tissue. METHODS: To differentiate between cryopreservation (C) versus thawing (T) related effects, four combinations of these two (A and B) very different cryopreservation/thawing protocols (ACAT, ACBT, BCAT, BCBT) were studied. Before and after cryopreservation and thawing, the percentage of living and morphologically normal follicles, as well as the overall tissue viability, was assessed. RESULTS: Our experiments revealed that the choice of the cryopreservation protocol noticeably affected the overall tissue viability and percentage of living follicles, with a higher viability after protocol BC when compared to AC. No statistically significant differences in tissue viability were observed between the two thawing protocols, but thawing protocol BT required considerably more human effort and materials than thawing protocol AT. Tissue morphology was best retained using the BCAT combination. CONCLUSION: Our results indicate that extensive and systematical evaluation of clinically used protocols is warranted.
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- Faculty of Medical Sciences [90359]
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