1. Suppressive regulatory T cells and latent transforming growth factor-β-expressing macrophages are altered in the peritoneal fluid of patients with endometriosis
- Author
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Takahide Mori, Misako Nakayama, Kazumasa Ogasawara, Shunichiro Tsuji, Kyoko Kasahara, Shiro Wakinoue, Takashi Murakami, Tetsuro Hanada, and Fuminori Kimura
- Subjects
0301 basic medicine ,TGF-β ,Adult ,lcsh:QH471-489 ,Regulatory T cell ,Endometriosis ,chemical and pharmacologic phenomena ,Peripheral blood mononuclear cell ,lcsh:Gynecology and obstetrics ,T-Lymphocytes, Regulatory ,Immune tolerance ,Flow cytometry ,03 medical and health sciences ,Endocrinology ,Transforming Growth Factor beta ,medicine ,lcsh:Reproduction ,Ascitic Fluid ,Humans ,lcsh:RG1-991 ,biology ,medicine.diagnostic_test ,business.industry ,Peritoneal fluid ,Research ,Latency-associated peptide ,Obstetrics and Gynecology ,hemic and immune systems ,Middle Aged ,medicine.disease ,030104 developmental biology ,medicine.anatomical_structure ,Reproductive Medicine ,Integrin alpha M ,Immunology ,biology.protein ,Female ,business ,Developmental Biology ,Transforming growth factor - Abstract
Background Endometriosis is a known cause of infertility. Differences in immune tolerance caused by regulatory T cells (Tregs) and transforming growth factor-β (TGF-β) are thought to be involved in the pathology of endometriosis. Evidence has indicated that Tregs can be separated into three functionally and phenotypically distinct subpopulations and that activated TGF-β is released from latency-associated peptide (LAP) on the surfaces of specific cells. The aim of this study was to examine differences in Treg subpopulations and LAP in the peripheral blood (PB) and peritoneal fluid (PF) of patients with and without endometriosis. Methods PB and PF were collected from 28 women with laparoscopically and histopathologically diagnosed endometriosis and 20 disease-free women who were subjected to laparoscopic surgery. Three subpopulations of CD4+ T lymphocytes (CD45RA+FoxP3low resting Tregs, CD45RA−FoxP3high effector Tregs, and CD45RA−FoxP3low non-Tregs) and CD11b+ mononuclear cells expressing LAP were analyzed by flow cytometry using specific monoclonal antibodies. Results Proportions of suppressive Tregs (resting and effector Tregs) were significantly higher in the PF samples of patients with endometriosis than in those of control women (P = 0.02 and P
- Published
- 2018