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Published in: Reproductive Biology and Endocrinology 1/2012

Open Access 01-12-2012 | Research

FSH prevents depletion of the resting follicle pool by promoting follicular number and morphology in fresh and cryopreserved primate ovarian tissues following xenografting

Authors: Viktoria von Schönfeldt, Ramesh Chandolia, Robert Ochsenkühn, Eberhard Nieschlag, Ludwig Kiesel, Barbara Sonntag

Published in: Reproductive Biology and Endocrinology | Issue 1/2012

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Abstract

Background

Cryopreservation and transplantation of ovarian tissue is one option for re-establishing ovarian function, but optimal conditions for graft sustainment and follicular survival are still considered experimental. The present study aims to analyze the effect of FSH treatment on the resting follicle pool in fresh and cryopreserved primate ovarian tissues following xenografting.

Methods

Ovarian tissues from adult marmosets were grafted freshly or following cryopreservation to ovarectomized nude mice treated with FSH 25 IU twice daily post transplantation or left untreated as controls. Grafts were retrieved 2 or 4 weeks after transplantation to evaluate the number and morphological appearance of follicles.

Results

Early start of FSH treatment within 1 week following transplantation partly prevents primordial follicle loss in fresh and frozen-thawed tissues, whereas after a 3 weeks time interval this effect is present only in fresh tissues. A similar positive effect of early, but not later FSH treatment on primary follicles is seen in fresh tissues compared to only marginal effects in frozen-thawed tissues. The percentage of morphologically normal follicles is generally increased in FSH treated tissues, whereas the percentage of primary follicles over all primordial and primary follicles is increased by FSH only in freshly-grafted tissues.

Conclusions

FSH treatment alleviates depletion of the resting follicle pool and promotes normal follicular morphology both in freshly and frozen-thawed grafted tissues. In previously cryopreserved tissues, applying to most of the tissues intended for clinical use in fertility preservation attempts, its positive effect on primordial follicle numbers and potential graft sustainment is dependent on an early start of treatment within one week of transplantation.
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Metadata
Title
FSH prevents depletion of the resting follicle pool by promoting follicular number and morphology in fresh and cryopreserved primate ovarian tissues following xenografting
Authors
Viktoria von Schönfeldt
Ramesh Chandolia
Robert Ochsenkühn
Eberhard Nieschlag
Ludwig Kiesel
Barbara Sonntag
Publication date
01-12-2012
Publisher
BioMed Central
Published in
Reproductive Biology and Endocrinology / Issue 1/2012
Electronic ISSN: 1477-7827
DOI
https://doi.org/10.1186/1477-7827-10-98

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