CD200 and CD200R Expression on Peripheral Blood Lymphocytes and Serum CD200 Concentration as a New Marker of Endometriosis

Monika Abramiuk, Ewelina Grywalska, Izabela Korona‐Głowniak, Paulina Niedźwiedzka‐Rystwej, Grzegorz Polak, Jan Kotarski, Jacek Roliński
Journal of clinical medicine · 2020 · vol. 9(9) , pp. 3035 · doi:10.3390/jcm9093035 · PMID:32967175 · PMC7564549 · W3087117996
article OA: gold CC0 ⤵ 4 in-corpus citations
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This study found that altered expression of CD200 and CD200R on lymphocytes and in serum correlates with endometriosis severity and may serve as a diagnostic marker.

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Abstract

The causes of endometriosis (EMS) remain unknown; however, a number of immunological abnormalities contribute to the pathogenesis of the disease. The cluster of differentiation-200 (CD200) and its receptor (CD200R) maintain peripheral self-tolerance by negatively regulating immune responses. In this comparative cross-sectional study, we investigated the expression of CD200 and CD200R on T and B lymphocytes and the serum level of soluble CD200 (sCD200) using flow cytometry and ELISA, respectively. Peripheral blood samples were collected from 54 female patients and 20 healthy, age-matched controls. Results were tested for correlation with disease severity and selected clinical parameters. We demonstrated that the differences in sCD200 levels (p = 0.001), the frequencies of CD200-positive T and B lymphocytes (p < 0.001 and p = 0.004, respectively), and the frequencies of CD200R-positive T and B lymphocytes (p < 0.001 for all comparisons) in the study group correlated positively with disease severity. Receiver operating characteristic (ROC) analysis indicated that aberrant expression of CD200/CD200R might serve as a marker to distinguish between EMS cases. Finally, negative co-stimulatory factors may contribute to the induction and persistence of inflammation associated with EMS. It seems that it is essential to determine whether alteration in the CD200/CD200R pathway can be therapeutically targeted in EMS.

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endometriosis

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