Journal of reproductive immunology
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J. Reprod. Immunol. · Jun 2009
Intraperitoneal immune cell status in infertile women with and without endometriosis.
Endometriosis is a widespread chronic disease characterized by endometrial tissue located outside the uterine cavity. Clinical signs are chronic pelvic pain and infertility. Emerging evidence indicates that the immune system is profoundly involved in the onset and/or progression of endometriosis. ⋯ Flow cytometry analysis revealed an increased frequency of CD4(+) and CD8(+) cells in peritoneal fluid of endometriosis patients. In addition, the frequency of CD4(+)CD25(+)CD103(+) cells and lineage(-)HLA-DR(+)CD11c(+)CD123(+) dendritic cells was decreased in peritoneal fluid in endometriosis, whereas CD57(+) NK cells and CD8(+)CD28(-) T suppressor cells remained largely unaltered. We conclude that therapeutic approaches in endometriosis might focus on peritoneal leukocytes as a target or surveillance marker; however, immune alterations in peritoneal fluid are subtle and their analysis will require highly standardized and harmonized protocols.