Cytokine levels in serum of patients with juvenile rheumatoid arthritis.
We investigated serum levels of interleukin (IL)-1beta, IL-6, IL-8, IL-12 and tumour necrosis factor (TNF)-alpha in JRA patients during both active and inactive phases of the disease. The systemic JRA patients had the highest IL-1beta and IL-6 levels during both active and inactive periods. In the systemic group IL-1beta, IL-6 and IL-12 levels during the active period were elevated compared to the inactive period (p = 0.0173, p = 0.0359 and p = 0.0117, respectively). Levels of these cytokines during the inactive stage were still greater than those of controls. IL-8 and TNF-alpha levels during both active and inactive periods were comparable to controls. IL-1beta correlated strongly with CRP and ESR (p = 0.008 and p = 0.031, respectively). IL-6 correlated significantly with CRP (p = 0.002). IL-12 levels were found to be correlated with ESR and CRP (p = 0.03 and p = 0.04, respectively). In active polyarticular JRA patients, IL-6 levels were elevated compared to the inactive phase, and the control (p = 0.001) IL-12 levels decreased significantly with clinical remission (p = 0.018). There was a strong correlation between 11-12 levels and number of joint with limited motion (p = 0). In oligoarticular JRA patients, IL-12 levels during active period were greater than in the controls and there was a marked decrease in IL-12 levels when the patients entered the inactive phase (p = 0.001) In conclusion, IL-1beta, IL-6 and IL-12 may play an important role in JRA and may be used as a marker of disease activity.
Department of Pediatrics, Cukurova University Faculty of Medicine, Adana, Turkey. Deraytek@pamuk.cu.edu.tr
M
M
Yilmaz
S G
SG
Kendirli
D
D
Altintas
G
G
Bingöl
B
B
Antmen
D000293:Adolescent; D001171:Arthritis, Juvenile / Q000097:blood* / Q000473:pathology; D002648:Child; D002675:Child, Preschool; D016207:Cytokines / Q000097:blood*; D005069:Evaluation Studies as Topic; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007375:Interleukin-1 / Q000097:blood; D018664:Interleukin-12 / Q000097:blood; D015850:Interleukin-6 / Q000097:blood; D016209:Interleukin-8 / Q000097:blood; D008297:Male; D013223:Statistics as Topic; D018709:Statistics, Nonparametric; D014409:Tumor Necrosis Factor-alpha / Q000032:analysis
D016207:Cytokines; D007375:Interleukin-1; D015850:Interleukin-6; D016209:Interleukin-8; D014409:Tumor Necrosis Factor-alpha; D018664:Interleukin-12