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Background:
Opiate abuse is a matter of serious concern in adolescent men. The primary drugs used in the treatment of opiate addiction are methadone and buprenorphine.
e-ISSN 2251-872X
p-ISSN 2251-8711
A Quantitative and Qualitative Study of Rat Testis Following Administration of Methadone and Buprenorphine
Authors
1Department of Histology, Faculty of Medicine, Zahedan University of Medical Sciences, Zahedan, IR Iran
*Corresponding Author: Department of Histology, Zahedan University of Medical Sciences, Zahedan, IR Iran. Tel: +98-5413414572, Fax: +98-5413414572, histology@ymail.com. Email: histology@ymail.com
Published online:Jun 20, 2012
Article type:Research Article
Received:Jul 08, 2011
Accepted:Nov 24, 2011
How to Cite:Heidari Z, Mahmoudzadeh-Sagheb H, Kohan F. A Quantitative and Qualitative Study of Rat Testis Following Administration of Methadone and Buprenorphine. Int J High Risk Behav Addict. 2012;1(1):. doi: https://doi.org/10.5812/ijhrba.4119
Abstract
Objectives:
This study was undertaken to determine the quantitative and qualitative changes in rat testes after methadone and buprenorphine administration.
Materials and Methods:
In this experimental study, 15 male Wistar rats, each weighing 250 15 g, were selected and randomly divided into 3 groups (n = 5). The first group received an intraperitoneal dose of 0.5 mg/kg/day methadone and the second group received an intraperitoneal dose of 30 mg/kg/day buprenorphine for 15 days each. The third group (control) received normal saline injections. After the last injection dose, the rats were sacrificed and their testes were removed, weighed, and fixed in modified Lillies solution, and embedded in 3.5% agar, after which 1-mm slices perpendicular to the long axis of the testes were prepared using a tissue slicer. Then, on the basis of Cavaleris principle, the testis volume was calculated by point-counting method. For histological analysis, systematic random samples of each testis were selected, processed, and stained by hematoxylin and eosin (H&E) and periodic acid schiff (PAS) methods. The results obtained for the 3 groups were compared using nonparametric KruskalWallis test. P < 0.05 was considered as the level of significance.
Results:
Stereological analysis of rat testes showed no significant effect of methadone and buprenorphine administration on the testis volume (P > 0.05). However, microscopic studies of rat tissues in the methadone-administered group showed atrophic seminiferous tubules, reduction of sperm stem cells, destruction of Sertoli cells, irregularities in the basement membrane of seminiferous tubules, cellular degeneration of spermatogonia and primary spermatocytes, and significantly fewer spermatozoids than in the control group. Furthermore, in the methadone-administered group, the germinal cells of seminiferous tubules were damaged and extensively detached from the basement membrane and the vessels of the interstitial tissue were congested. Microscopic studies of the buprenorphine-administered group showed no significant changes in the basement membrane, seminiferous tubules, Sertoli cells, interstitial tissue, and sperms.
Conclusions:
Buprenorphine is more suitable for treating opiate addiction in males since it does not affect normal testicular structure and function.
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Copyright
© 2012, Author(s). This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International License (CC BY 4.0) (https://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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