CLINICAL CHARACTERISTICS AND RISK FACTORS OF ADULT STILL'S DISEASE WITH CHRONIC ARTHRITIS.
T Fujii, T Nojima, S Satoh,
K Nakamura, M Kuwana, A Suwa, M Hirakata, T Mimori. Tokyo.
In patients with chronic articular ASD, female was more frequent (82% vs. 44%, p<0.05) but liver dysfunction and myalgia were rarer (18% vs. 50%; p<0.05, 13% vs. 65%; p<0.05) than in systemic ASD. At disease onset, synovitis of MP and PIP joints were frequently observed in chronic articular ASD but not in systemic ASD (p<0.05). Hypergammaglobulinemia was more but leukocytosis was less distinct in chronic articular ASD than in systemic ASD. It was noted that, different from systemic ASD, the serum level of IFNg and IL-8 were not decreased in chronic articular ASD even when systemic disease activity including CRP or serum IL-6 level was low. The analysis of HLA class II alleles by PCR-RFLP/SSP showed that DRB1*1501 [DR2] (53% vs. 16%, OR = 5.9; p<0.05), DRB1*1201 [DR5] (27% vs. 4%, OR = 7.9; p<0.05), DQB1*0602 [DQ1] (42% vs. 15%, OR = 4.1; p<0.05), and DQB1*0302 [DQ3] (33% vs. 9%, OR = 5.2; p<0.05) was more frequent in chronic articular ASD than in normal healthy control.
These results suggest that chronic articular ASD seems to have the different characteristics from that of systemic ASD. Female, MP and PIP joint synovitis at disease onset, or HLA class II should be noted as a risk factor of chronic articular damages of patients with ASD. Additionally, IFNg or IL-8 may be involved in the pathogenesis of chronic arthritis of ASD.
ACR Concurrent Session: Diagnosis / Treatment of Rare Rheumatic Syndromes (2:15 PM-3:45 PM)
Presentation Date: Monday, November 15, 1999, Time: 2:15PM, Room: Room 304
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