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International Journal of Reproductive BioMedicine
Research and Clinical Center for Infertility, Shahid Sadoughi University of Medical Sciences of Yazd
ISSN: 1680-6433
EISSN: 2008-2177
Vol. 13, No. 9, 2015, pp. 525-532
Bioline Code: rm15070
Full paper language: English
Document type: Research Article
Document available free of charge

International Journal of Reproductive BioMedicine, Vol. 13, No. 9, 2015, pp. 525-532

 en Oxidative stress induced sperm DNA damage, a possible reason for male infertility
Hosen, Bayejid; Islam, Rakibul; Begum, Firoza; Kabir, Yearul & Hossain Howlader, Zakir


Background: Sperm DNA damage is an important factor in the etiology of male infertility.
Objective: The aim of the study was to evaluate the association of oxidative stress induced sperm DNA damage with the pathogenesis of male infertility.
Materials and Methods: The study comprised a total of 66 subjects, including fertile men (n=25) and infertile men (n=41) matched by age. Seminal malondialdehyde (MDA), phospholipid hydroperoxide (PHP), superoxide dismutase (SOD), total antioxidant status (TAS) and 8-hydroxy-2'-deoxy guanosine (8-OHdG) were estimated by spectrophotometric and ELISA based methods and the association with the sperm parameters was assessed.
Results: The percentages of motile and morphologically normal cells were significantly lower (p < 0.001, p <0.001, respectivly) in infertile men. Seminal levels of MDA, PHP and 8-OHdG were significantly higher (p < 0.001, p < 0.001, and p=0. 02, respectively) while the SOD and TAS were significantly lower (p=0. 0003, p< 0.001, respectively) in infertile men. Sperm parameters were negatively correlated with MDA, PHP and 8-OHdG while positively correlated with SOD and TAS. A positive correlation of 8-OHdG with MDA and PHP and a negative correlation with TAS and SOD were also found.
Conclusion: These results suggested that oxidative stress induced sperm DNA damage might have a critical effect on the etiology of infertility. Therefore, evaluation of oxidative status, antioxidant defense systems and DNA damage, together with sperm parameters might be a useful tool for diagnosis and treatment of male infertility.

DNA damage; Lipid peroxidation; Male infertility; Oxidative stress; Sperm quality

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