Abstract
Sperm DNA fragmentation is an important factor in male infertility, miscarriage and unsuccessful ART cycles. The purpose of thisreview wasto summarize and briefly analyze the available data on the effect of common infections of the male genitourinary tract on sperm DNA fragmentation (SDF), the mechanisms of their influence, efficacy and outcomes of treatment. Based on the results of these studies, it can be said that Chlamydia trachomatis, Ureaplasma spp. and Mycoplasma genitalium have a significant effect and lead to a pronounced increase in SDF. The effect of opportunistic bacteria on SDF depends on the type of microorganisms, their diversity and quantity. The presence of certain bacteria is associated with higher levels of ,some are presumably associated with beneficial effects and lower levels of SDF. Candidiasis can presumably affect SDF, but the available data are insufficient for an accurate answer. Treatment ofsuch infectionsleads to a decrease in sperm DNA fragmentation index, an increase in the effectiveness of ART and spontaneous pregnancy rates. Keywords: sperm DNA fragmentation, infection, male infertility, oxidative stress, fertility, semen analysis, sperm, sperm chromatin.
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