TAILIEUCHUNG - Báo cáo y học: "Effects of inflammatory cytokine IL-27 on the activation of fibroblast-like synoviocytes in rheumatoid arthritis"

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học General Psychiatry cung cấp cho các bạn kiến thức về ngành y đề tài: Effects of inflammatory cytokine IL-27 on the activation of fibroblast-like synoviocytes in rheumatoid arthritis. | Wong et al. Arthritis Research Therapy 2010 12 R129 http content 12 4 R129 RESEARCH ARTICLE Open Access EffeCCtsCof inflammatory cytokine IL-27 on the activation of fibroblast-like synoviocytes in rheumatoid arthritis Chun KWong41 Da P Chen41 Lai STam2 Edmund K Li2 Yi B Yin3 and Christopher WK Lam 4 Abstract Introduction Interleukin IL -27 is a novel member of the IL-6 IL-12 family cytokines that are produced early by antigen-presenting cells in T helper Th 1-mediated inflammation. Elevated expression of IL-27 has been detected in the synovial membranes and fluid of rheumatoid arthritis RA . Methods We investigated the in vitro effects of IL-27 alone or in combination with inflammatory cytokine tumor necrosis factor TNF -a or IL-1 p on the pro-inflammatory activation of human primary fibroblast-like synoviocytes FLS from RA patients and normal control subjects and the underlying intracellular signaling molecules were determined by intracellular staining using flow cytometry. Results Significantly higher plasma concentration of IL-27 was found in RA patients n 112 than control subjects n 46 . Both control and RA-FLS constitutively express functional IL-27 receptor heterodimer gp130 and WSX-1 with more potent IL-27-mediated activation of signal transducers and activators of transcription STAT 1 in RA-FLS. IL-27 was found to induce significantly higher cell surface expression of intercellular adhesion molecule ICAM -1 and vascular cell adhesion molecule VCAM -1 and release of inflammatory chemokine IL-6 CCL2 CXCL9 CXCL10 and matrix metalloproteinase-1 of RA-FLS than that of control FLS all P . Moreover an additive or synergistic effect was observed in the combined treatment of IL-27 and TNF-a or IL-1 p on the surface expression of ICAM-1 and VCAM-1 and the release of CXCL9 and CXCL10 of RA-FLS. Further investigations showed that the expression of ICAM-1 VCAM-1 and chemokines stimulated by IL-27 was differentially regulated by intracellular

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