Sperm & testicular autoimmunity

Sperm & testicular autoimmunity

Sperm & testicular autoimmunity – The human immune system is trained during the early postnatal period.

Sperm & testicular autoimmunity – The human immune system is trained during the early postnatal period. In men, at puberty when the sperm first appear in the testis and epididymis, the human immune system will have the chance to contact sperm antigens. Similarly, when women become sexually active, their immune system will inevitably contact sperm antigens. Therefore, once sperm, as an autoantigen, activates the human immune system, an autoimmune response against human sperm will occur. The blood-testis barrier and the epididymal blood-epithelium barrier in humans are important structures in preventing sperm antigens from contacting immunocompetent cells, due to the tight junctions of Sertoli and epithelial cells. This creates favorable conditions for spermatogenesis and sperm survival in the testicular fluid, and sperm maturation in the epididymal fluid. It also prevents the occurrence of autoimmunity after puberty. Therefore, alteration of the blood-testis barrier and the blood-epithelium barrier allows the production of ASAs and, hence, may lead to infertility. There are three types of sperm autoimmunity: that associated with genital tract obstruction, that accompanied by tesricular inflammation, and a spontaneously occurring type that does not present with either of the preceding associated features.

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Patricia Barber
Patricia Barber
For the last 20 years, Pat has been helping patients and caregivers live better lives, advocate for change, and Virginia's "right hand" making sure the "i's" are dotted and the "t's" are crossed. She lives in Michigan and couldn't picture herself doing anything but helping the autoimmune community.