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Protective effect of gonadotropin-releasing hormone analog on the ovarian reserve in rats receiving cyclophosphamide treatment

Authors Gui T, Yuan G, Shen K, Cao D, Yang J, Wu M, Lang J

Received 4 December 2014

Accepted for publication 2 February 2015

Published 23 March 2015 Volume 2015:8 Pages 661—667


Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 4

Editor who approved publication: Dr Faris Farassati

Ting Gui,1,* Guangwen Yuan,2,* Keng Shen,1 Dongyan Cao,1 Jiaxin Yang,1 Ming Wu,1 Jinghe Lang1

1Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, 2Department of Gynecologic Oncology, Cancer Hospital, Peking Union Medical College, Chinese Academy of Medical Science, Beijing, People’s Republic of China

*These authors contributed equally to this work

Objective: The aim of the study reported here was to investigate the protective effect of gonadotropin-releasing hormone analog (GnRHa) against cyclophosphamide (CTX)-induced gonadotoxicity.
Methods: Eighty Fischer 344 rats were divided randomly into four groups (20 per group). One group received normal saline, one GnRHa, one CTX, and one GnRHa+CTX. Several parameters were used to observe the ovarian reserve, including ovary weight, follicle number and diameter, concentrations of estradiol (E2) and follicle-stimulating hormone (FSH), and expressions of sex hormone receptors.
Results: When treatment was finished, the number of small follicles in the GnRHa+CTX group was significantly higher than in the CTX-alone group. Thirty days after treatment, the ovary weight, percentage of small follicles, mean follicular diameter, and serum concentrations of
E2 and FSH in the GnRHa+CTX group all recovered, approaching normal levels. Sex hormone receptors did not show significant differences between the four groups.
Conclusion: Combination treatment with GnRHa could prevent CTX-induced damage to ovarian reserve.

Keywords: gonadotoxicity, ovarian reserve, GnRHa, CTX, premature ovarian failure

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