Testicular inflammation and infertility: Could chlamydial infections be contributing?

American Journal of Reproductive Immunology : AJRI
Emily R BryanAlison J Carey

Abstract

Despite the global incidence of both male infertility and sexually transmitted infections rising each year, the relationship between the two is relatively unstudied. Chlamydia is the most common bacterial sexually transmitted pathogen; however, the majority of research remains focussed on women, while the role of infection and resulting immunopathology in male factor infertility is largely unknown. Chlamydia was found in testicular biopsies from asymptomatic men with idiopathic infertility, which highlights this potential role. In animal models, testicular Chlamydia, and potentially other bacterial and viral infections, cause histopathology that is likely to adversely affect spermatogenesis and fertility. This likely occurs through infiltration of inflammatory cells, functional dysregulation of immunosuppressive testicular macrophages and Sertoli cells and destruction of key testicular cell types including sperm progenitors. Here, testicular damage due to infection and/or inflammation is reviewed, as it represents a probable underestimated and unrecognized factor leading to male infertility.

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Citations

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