Elevated serum level of IL-27 and VEGF in patients with ankylosing spondylitis and associate with disease activity.
Interleukin (IL)-27 is an IL-12 family cytokine and exerts a critical role in immune regulation in the context of infection, autoimmunity, and angiogenesis. In this study, we aimed to investigate the possible pathophysiological role of IL-27 and vascular endothelial growth factor (VEGF) in ankylosing spondylitis (AS). One hundred and forty AS patients and 90 healthy controls were included in the current study. The levels of IL-27 and VEGF in serum and synovial fluid (SF) samples were measured by enzyme-linked immunosorbent assay. Erythrocyte sedimentation rate, C-reactive protein, and human leukocyte antigen (HLA)-B27 were measured by standard laboratory techniques. Disease activity in AS was scored with Bath Ankylosing Spondylitis Disease Activity Index (BASDAI). Hip involvement, peripheral arthritis, and eye involvement were also recorded. The serum levels of IL-27 were remarkably higher in AS patients than healthy groups and significantly correlated with serum levels of VEGF. Furthermore, the serum levels of IL-27 were correlated with BASDAI independent of other markers of inflammation. Elevated serum levels of IL-27 and VEGF were detected in AS patients with peripheral arthritis and HLA-B27 positive. The SF levels of IL-27 and VEGF were significantly higher than serum levels in AS patients with peripheral arthritis. By contrast, levels of IL-27 and VEGF were not increased in AS patients with hip involvement and eye involvement. IL-27 may regulate the immunological or inflammatory process of AS.
Department of Rheumatology and Immunology, The First Affiliated Hospital of China Medical University, 155 Nanjing North Street, Heping District, Shenyang, 110001, People's Republic of China.
Tian-Tian
TT
Lin
Jing
J
Lu
Chen-Yue
CY
Qi
Lin
L
Yuan
Xiao-Lin
XL
Li
Li-Ping
LP
Xia
Hui
H
Shen
D000328:Adult; D015415:Biomarkers / Q000097:blood*; D015331:Cohort Studies; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D006801:Humans; D007378:Interleukins / Q000097:blood*; D008297:Male; D044967:Serum / Q000737:chemistry; D012720:Severity of Illness Index; D013167:Spondylitis, Ankylosing / Q000473:pathology*; D013582:Synovial Fluid / Q000737:chemistry; D042461:Vascular Endothelial Growth Factor A / Q000097:blood*
D015415:Biomarkers; D007378:Interleukins; C464565:MYDGF protein, human; C467484:VEGFA protein, human; D042461:Vascular Endothelial Growth Factor A