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  • Title: Serum soluble intercellular adhesion molecule 1 and interleukin 8 levels in familial Mediterranean fever.
    Author: Direskeneli H, Ozdogan H, Korkmaz C, Akoglu T, Yazici H.
    Journal: J Rheumatol; 1999 Sep; 26(9):1983-6. PubMed ID: 10493680.
    Abstract:
    OBJECTIVE: Familial Mediterranean fever (FMF) is a disease of unknown etiology characterized by recurrent attacks of polyserositis (peritonitis, pleuritis, and arthritis) and fever. We measured levels of soluble intercellular adhesion molecule 1 (sICAM-1) and interleukin 8 (IL-8), which are important mediators in leukocyte-endothelial adhesion and leukocyte accumulation in tissues. METHODS: sICAM-1 and IL-8 levels were studied in 30 patients with FMF during attacks and remission, along with 23 healthy and 26 disease controls. sICAM-1 and IL-8 levels were measured with commercial ELISA systems. RESULTS: Median levels of sICAM-1 were significantly elevated in patients with FMF during attacks (FMF-a) and remission periods (FMF-r) compared to healthy controls (HC) (FMF-a: 600 ng/ml, FMF-r: 520 ng/ml, HC: 353 ng/ml; FMF-a vs. HC: p<0.0001, FMF-r vs. HC: p = 0.002). IL-8 levels were also significantly elevated in FMF-a compared to HC (37 vs. 25 pg/ml; p = 0.009), but not during remission (26 pg/ml; p = 0.7). A significant correlation was observed between sICAM-1 and IL-8 levels (r = 0.33, p = 0.01). sICAM-1 levels also correlated significantly with erythrocyte sedimentation rate, C-reactive protein, and fibrinogen levels of patients with FMF. CONCLUSION: Increased levels of sICAM-1 and IL-8 in FMF suggest that neutrophils are active with increased adhesion in FMF. Since increased levels of sICAM-1 are also observed during remission, subclinical disease activity and inflammation seem to be present in some patients.
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