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RESEARCH ARTICLE (Open Access)

Seven days ex vivo perfusion of whole ewe ovaries with follicular maturation and oocyte retrieval: towards the development of an alternative fertility preservation method

Panagiotis Tsiartas A B , Claudia Mateoiu C , Meghshree Deshmukh D , Debashish Banerjee D , Arvind M. Padma A D , Milan Milenkovic B E , Fulvio Gandolfi F , Mats Hellström A D , Pasquale Patrizio G H and Randa Akouri https://orcid.org/0000-0002-1785-8535 A D *
+ Author Affiliations
- Author Affiliations

A Department of Obstetrics and Gynecology, Sahlgrenska University Hospital, Blå stråket 6, 41345 Gothenburg, Sweden.

B Department of Oncology-Pathology, Karolinska Institute, Stockholm, Sweden.

C Department of Pathology, Sahlgrenska University Hospital, Gothenburg, Sweden.

D Laboratory for Transplantation and Regenerative Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.

E BeoGyn Clinic, Belgrade, Serbia.

F Department of Agricultural and Environmental Sciences, University of Milano, Milano, Italy.

G Yale Fertility Center, Yale School of Medicine, New Haven, CT, USA.

H Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology and Reproductive Sciences, University of Miami, Miller School of Medicine, Miami, FL, USA.

* Correspondence to: randa.akouri@vgregion.se

Handling Editor: Jennifer Juengel

Reproduction, Fertility and Development 34(3) 331-342 https://doi.org/10.1071/RD21197
Published online: 28 January 2022

© 2022 The Author(s) (or their employer(s)). Published by CSIRO Publishing. This is an open access article distributed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND)

Abstract

Fertility preservation methods for prepubertal women about to undergo gonadotoxic chemo and/or radiation therapy are limited. Therefore, the aim of this study was to investigate the feasibility to develop an alternative fertility preservation method based on an ex vivo perfusion platform for whole ewe ovaries. Thirteen ewe ovaries were divided into two groups (group 1 and 2) that were perfused in a bioreactor for up to 7 days. Group 1 (n = 3) were stimulated with human menopausal gonadotropin (hMG) administered in single daily dose, while group 2 (n = 10) were stimulated continuously for 24 h. The perfused ovaries in group 1 showed no significant differences in follicular density, sub-follicular morphology and oocyte quality after ischaemia and after ex vivo perfusion compared with non-perfused control ovaries. The perfused ovaries in group 2 showed a significant decrease in the follicular reserve and oocyte quality compared with the control group. In total, 16 GV–MI oocytes were retrieved from both groups. This study describes for the first time the ex vivo maintenance of viable follicles of ewe ovaries with oocyte integrity and the retrieval of oocytes after ex vivo hormonal perfusion with two different protocols for up to 7 days.

Keywords: bioreactor, endocrinology, ewes, ex vivo, fertility preservation, follicular development, ovary, perfusion.


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