The epididymal immune balance: a key to preserving male fertility

Up to 15% of male infertility has an immunological origin, either due to repetitive infections or to autoimmune responses mainly affecting the epididymis, prostate, and testis. Clinical observations and epidemiological data clearly contradict the idea that the testis confers immune protection to the...

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Main Authors: Allison Voisin, Fabrice Saez, Joël R Drevet, Rachel Guiton
Format: Article
Language:English
Published: Wolters Kluwer Medknow Publications 2019-01-01
Series:Asian Journal of Andrology
Subjects:
Online Access:http://www.ajandrology.com/article.asp?issn=1008-682X;year=2019;volume=21;issue=6;spage=531;epage=539;aulast=Voisin
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author Allison Voisin
Fabrice Saez
Joël R Drevet
Rachel Guiton
author_facet Allison Voisin
Fabrice Saez
Joël R Drevet
Rachel Guiton
author_sort Allison Voisin
collection DOAJ
description Up to 15% of male infertility has an immunological origin, either due to repetitive infections or to autoimmune responses mainly affecting the epididymis, prostate, and testis. Clinical observations and epidemiological data clearly contradict the idea that the testis confers immune protection to the whole male genital tract. As a consequence, the epididymis, in which posttesticular spermatozoa mature and are stored, has raised some interest in recent years when it comes to its immune mechanisms. Indeed, sperm cells are produced at puberty, long after the establishment of self-tolerance, and they possess unique surface proteins that cannot be recognized as self. These are potential targets of the immune system, with the risk of inducing autoantibodies and consequently male infertility. Epididymal immunity is based on a finely tuned equilibrium between efficient immune responses to pathogens and strong tolerance to sperm cells. These processes rely on incompletely described molecules and cell types. This review compiles recent studies focusing on the immune cell types populating the epididymis, and proposes hypothetical models of the organization of epididymal immunity with a special emphasis on the immune response, while also discussing important aspects of the epididymal immune regulation such as tolerance and tumour control.
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spelling doaj.art-fa1a7648ec3e4302b3b0e82afca4997d2022-12-21T18:40:50ZengWolters Kluwer Medknow PublicationsAsian Journal of Andrology1008-682X1745-72622019-01-0121653153910.4103/aja.aja_11_19The epididymal immune balance: a key to preserving male fertilityAllison VoisinFabrice SaezJoël R DrevetRachel GuitonUp to 15% of male infertility has an immunological origin, either due to repetitive infections or to autoimmune responses mainly affecting the epididymis, prostate, and testis. Clinical observations and epidemiological data clearly contradict the idea that the testis confers immune protection to the whole male genital tract. As a consequence, the epididymis, in which posttesticular spermatozoa mature and are stored, has raised some interest in recent years when it comes to its immune mechanisms. Indeed, sperm cells are produced at puberty, long after the establishment of self-tolerance, and they possess unique surface proteins that cannot be recognized as self. These are potential targets of the immune system, with the risk of inducing autoantibodies and consequently male infertility. Epididymal immunity is based on a finely tuned equilibrium between efficient immune responses to pathogens and strong tolerance to sperm cells. These processes rely on incompletely described molecules and cell types. This review compiles recent studies focusing on the immune cell types populating the epididymis, and proposes hypothetical models of the organization of epididymal immunity with a special emphasis on the immune response, while also discussing important aspects of the epididymal immune regulation such as tolerance and tumour control.http://www.ajandrology.com/article.asp?issn=1008-682X;year=2019;volume=21;issue=6;spage=531;epage=539;aulast=Voisinepididymis; immune response; lymphocytes; mononuclear phagocytes; tolerance
spellingShingle Allison Voisin
Fabrice Saez
Joël R Drevet
Rachel Guiton
The epididymal immune balance: a key to preserving male fertility
Asian Journal of Andrology
epididymis; immune response; lymphocytes; mononuclear phagocytes; tolerance
title The epididymal immune balance: a key to preserving male fertility
title_full The epididymal immune balance: a key to preserving male fertility
title_fullStr The epididymal immune balance: a key to preserving male fertility
title_full_unstemmed The epididymal immune balance: a key to preserving male fertility
title_short The epididymal immune balance: a key to preserving male fertility
title_sort epididymal immune balance a key to preserving male fertility
topic epididymis; immune response; lymphocytes; mononuclear phagocytes; tolerance
url http://www.ajandrology.com/article.asp?issn=1008-682X;year=2019;volume=21;issue=6;spage=531;epage=539;aulast=Voisin
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