Serum concentration of sTNF-R1 (<i>p</i> < 0.01) and sTNF-R2 (<i>p</i> < 0.01) resulted higher in both active and inactive BD than HC, while Chitinase3-like1 (<i>p</i> < 0.05) and gp130/sIL-6Rb (<i>p</i> < 0.01) serum levels were significantly higher in inactive BD, and IL-26 (<i>p</i> < 0.01) in active BD than HC.
In our previous studies, we found higher synovial fluid (SF) levels of angiogenic ELR(+) CXC chemokines such as CXCL1, CXCL5, CXCL6 and CXCL8, which play an important role in neutrophil migration and angiogenesis, and more abundant synovial CXCR2 chemokine receptor expression in patients with rheumatoid arthritis (RA) than those with Behçet's disease (BD), familial Mediterranean fever and osteoarthritis (OA).