Oxidative stress induced sperm DNA damage, a possible reason for male infertility.

Autor: Hosen MB; Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka-1000, Bangladesh., Islam MR; Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka-1000, Bangladesh., Begum F; Department of Obstetrics and Gynecology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka-1000, Bangladesh., Kabir Y; Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka-1000, Bangladesh., Howlader MZ; Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka-1000, Bangladesh.
Jazyk: angličtina
Zdroj: Iranian journal of reproductive medicine [Iran J Reprod Med] 2015 Sep; Vol. 13 (9), pp. 525-32.
Abstrakt: 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.
Databáze: MEDLINE
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