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"In couples who have not been able to have children, male infertility is the cause in at least half of cases. In 6-10% the cause is a urogenital infection. The risk of irreversible infertility associated with urogenital infections in men should not be underestimated, say Hans-Christian Schuppe and coauthors in a review article in the current issue of Deutsches Ärzteblatt International (Dtsch Arztebl Int 2017; 114: 321-7).
For this reason, appropriate diagnostic evaluation of infections and inflammation in men should be a component in the basic examination in couples who cannot conceive. In their article, the authors from Justus Liebig University Giessen summarize what is currently known about the possible effects of urogenital infections on male fertility and make recommendations on diagnostic and therapeutic approaches.
The main cause of inflammatory disease in the male genital tract are sexually transmitted pathogens or uropathogens (such as Chlamydia trachomatis or Escherichia coli). Furthermore, the spread of viral infections through the bloodstream needs to be considered. The diagnostic evaluation of urogenital infections in most patients with infertility is hampered by an asymptomatic primary chronic disease course. Non-invasive diagnostic markers are currently not available. Especially collecting data on asymptomatic inflammatory reactions in the epididymis and testes is difficult; the latter can be diagnosed with any degree of certainty only by using testicular biopsy. Asymptomatic inflammatory reactions are found in 25% of men who undergo testicular biopsy for infertility.
The current evidence from studies does not allow any definite conclusions about the effects of chronic prostatitis on fertility. However, it was found that after acute inflammation/infection of the epididymis, in 10% of cases no sperm was found in the ejaculate in the long term, and in 30% the number of spermatozoa were reduced; in 60% of men affected by an inflammation/infection of the epididymis, the testes were affected too. In such cases, testicular atrophy with permanent loss of spermatogenesis is a much feared complication..."
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