期刊
JOURNAL OF REPRODUCTIVE IMMUNOLOGY
卷 157, 期 -, 页码 -出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.jri.2023.103925
关键词
Adenomyosis; Ectopic endometrium; Eutopic endometrium; Immune cells; Systematic review
Inflammation plays a role in the symptomatology and pathogenesis of adenomyosis. The invasion of endometrium into the myometrium due to injury at the endo-myometrial interface causes inflammation and leads to the formation of adenomyosis lesions. These lesions result in local inflammation, heavy menstrual bleeding, chronic pelvic pain, and subfertility. Immunological differences have been observed in the eutopic endometrium and adenomyotic lesions compared to healthy endometrium. The presence of immune cells and dysregulated inflammatory processes in adenomyosis provide insights into its pathogenesis and potential fertility-sparing treatments.
Inflammation is implicated in the symptomatology and the pathogenesis of adenomyosis. Injury at the endo-myometrial interface causes inflammation and may facilitate the invasion of endometrium into the myome-trium, forming adenomyosis lesions. Their presence causes local inflammation, resulting in heavy menstrual bleeding, chronic pelvic pain, and subfertility. Immunological differences have been described in the eutopic endometrium from women with adenomyosis compared to healthy endometrium, and differences are also ex-pected in the adenomyotic lesions compared with the correctly sited eutopic endometrium. This systematic re-view retrieved relevant articles from three databases with additional manual citation chaining from inception to 24th October 2022. Twenty-two eligible studies were selected in accordance with PRISMA guidelines. Risk of bias assessments were performed, and the findings presented thematically. Ectopic endometrial stroma contained an increased density of macrophages compared with eutopic endometrium in adenomyosis. This was associated with an increase in pro-inflammatory cytokines (IL-6, IL-8, IL beta-1, C-X-C Motif Chemokine Receptor 1(CXCR1), Monocyte Chemoattractant Protein-1 (MCP-1)), and an imbalance of anti-inflammatory cytokines (IL-22, IL-37). Cells in ectopic lesions also contained a higher levels of toll-like receptors and immune-mediated enzymes. However, the studies were heterogeneous, with inconsistent reporting of immune cell density within epithelial or stromal compartments, and inclusion of samples from different menstrual cycle phases in the same group for analysis. A detailed understanding of the immune cell phenotypes present in eutopic and ectopic endometrium in adenomyosis and associated dysregulated inflammatory processes will provide further insight into the patho-genesis, to enable identification of fertility-sparing treatments as an alternative to hysterectomy.
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