• Cytokine · Apr 2015

    Serum and synovial fluid levels of tumor necrosis factor-like ligand 1A and decoy receptor 3 in rheumatoid arthritis.

    • Zijuan Xiu, Hui Shen, Ye Tian, Liping Xia, and Jing Lu.
    • Department of Rheumatology, 1st Affiliated Hospital of China Medical University, Shen Yang 110001, China.
    • Cytokine. 2015 Apr 1; 72 (2): 185-9.

    ObjectiveTo measure the levels of Tumor necrosis factor (TNF)-like ligand 1A (TL1A) and decoy receptor 3 (DcR3) in serum and synovial fluid (SF) of patients with rheumatoid arthritis (RA). To evaluate the effect of recombinant human (rh) TL1A on interleukin (IL)-17 production and IL-17mRNA expression.MethodsThe serum and SF levels of TL1A and DcR3, and the production of IL-17 by rhTL1A-treated PBMC were measured by enzyme-linked immunosorbent assay (ELISA). The expression of IL-17 mRNA by rhTL1A-treated PBMC was measured by real-time reverse transcriptase polymerase chain reaction (RT-PCR). We also tested the change of TL1A and DcR3 level following TNF-α blockade therapy.ResultsSerum TL1A and DcR3 levels were higher in RA patients. This increase was more significant in RF and anti-CCP positive patients. TL1A and DcR3 levels were higher in SF samples than in paired sera. TL1A and DcR3 decreased after anti-TNF treatment. rhTL1A increased the production of IL-17 protein and the expression of IL-17mRNA.ConclusionTL1A and DcR3 may be of pathogenic and potentially of therapeutic importance in RA patients.Copyright © 2015 Elsevier Ltd. All rights reserved.

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