alexa Increased sperm nuclear DNA damage in normozoospermic infertile men: a prospective study.
Reproductive Medicine

Reproductive Medicine

Andrology-Open Access

Author(s): Saleh RA, Agarwal A, Nelson DR, Nada EA, ElTonsy MH,

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Abstract OBJECTIVE: To evaluate levels of sperm nuclear DNA damage in infertile men with normal and abnormal standard semen parameters. DESIGN: Prospective study. SETTING: Male infertility clinic. PATIENT(S): Ninety-two men seeking infertility treatment and 16 fertile volunteers. INTERVENTION(S): Standard semen analysis was performed according to the World Health Organization guidelines. MAIN OUTCOME MEASURE(S): Sperm DNA damage was assessed by sperm chromatin structure assay and the results expressed as \%DFI. RESULT(S): Of the 92 patients, 21 (23\%) had normal standard sperm parameters (concentration, motility, and normal sperm forms), while 71 (77\%) had an abnormality in one or more of these parameters. The \%DFI [median (25th and 75th percentiles)] in infertile men with normal sperm parameters [23 (15, 32)] was significantly higher than fertile donors [15 (11, 20)] (P=.02), but not significantly different from infertile men with abnormal sperm parameters [28 (18, 41)] (P=.27). CONCLUSION(S): The results of this study indicate that a significant increase in SCSA-defined DNA damage can be found in sperm from infertile men with normal standard sperm parameters. Therefore, sperm DNA damage analysis may reveal a hidden abnormality of sperm DNA in infertile men classified as idiopathic based on apparently normal standard sperm parameters.
This article was published in Fertil Steril and referenced in Andrology-Open Access

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