Author: Kim H. -R. Kim H. -S. Park M. -K. Cho M. -L. Lee S. -H. Kim H. -Y.
Publisher: Informa Healthcare
ISSN: 0300-9742
Source: Scandinavian Journal of Rheumatology, Vol.36, Iss.4, 2007-01, pp. : 259-264
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Abstract
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)α, and IL-1β in rheumatoid arthritis (RA). Methods: Synovial fluid (SF) and sera of 22 patients with RA were obtained during knee arthrocentesis and stored at -20°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, TNFα, and IL-1β 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 TNFα and IL-1β 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, TNFα, and IL-1β.
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