ABSTRACT
Infertility is a major clinical problem, affecting people medically and psychosocially. Male factor plays a significant role in about 50% of infertile couples. Recent reports indicate that increasing male infertility could be due to genomic abnormalities. The etiology of sperm DNA damage is multi-factorial but compromised due to nuclear defects, protamine deficiency and oxidative stress. The present study was aimed to evaluate sperm DNA integrity and oxidative stress in infertile men. The study is prospective, comprises 96 infertile patients and 30 fertile controls. Sperm DNA integrity was assessed by flowcytometry. MDA and TAC were evaluated spectrophotometrically. The percentage of DNA Fragmentation Index and MDA were found to be significantly increased while TAC was significantly decreased in infertile men as compared to control. DFI and MDA were negatively correlated with TAC levels. Present study indicates significant increases in seminal MDA and sperm DNA damage in infertile men. Seminal MDA was significantly correlated with sperm DNA damage, TAC and standard sperm parameters. The elevated levels of seminal OS observed in these infertile patients could be responsible for poor sperm quality and sperm DNA fragmentation. Hence evaluation of DFI, MDA and TAC can be used for diagnosis, prognosis of male infertility in addition to routine semen parameters to decide the treatment strategies.