Journal
SCANDINAVIAN JOURNAL OF RHEUMATOLOGY
Volume 36, Issue 4, Pages 259-264Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/03009740701286813
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Objective: To determine the clinical implications of the over-expression of synovial and circulating interleukin (IL)-23p19 and the correlation between IL-23p19 and other cytokines such as IL- 17, tumour necrosis factor (TNF)alpha, and IL- 1 beta in rheumatoid arthritis (RA). Methods: Synovial fluid (SF) and sera of 22 patients with RA were obtained during knee arthrocentesis and stored at 220 C. Tender/ swollen joint counts, 100-mm visual analogue scale ( VAS), erythrocyte sedimentation rate (ESR), C- reactive protein ( CRP), rheumatoid factor (RF), and antibodies to cyclic citrullinated peptide ( anti- CCP Ab) were measured. Bony erosions were determined by X-rays. Serum and SF IL-23p19, IL-17, TNF alpha, and IL-1 beta concentrations were measured by sandwich enzyme-linked immunosorbent assay ( ELISA). Results: The concentration of IL-23p19 correlated with the concentration of IL-17 in SF and sera, and with the concentrations of TNF alpha and IL-1 beta in sera. SF IL-23p19 concentration was higher in patients who had bony erosions than those who had not. However, there was no correlation between IL-23p19 concentrations and other clinical parameters of RA. Conclusion: Upregulated IL-23p19 in SF might be involved in joint destruction in RA through interplay with other cytokines such as IL-17, TNF alpha, and IL-1 beta.
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