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  • Title: [Laboratory indicators of endothelial involvement in rheumatic diseases associated with vasculitis in children].
    Author: Dolezalová P, Telekesová P, Nĕmcová D, Bĕlorová J, Kvasnicka J, Hoza J.
    Journal: Cas Lek Cesk; 2003; 142(10):615-9. PubMed ID: 14635427.
    Abstract:
    BACKGROUND: Endothelial activation is an important etiopathogenetic factor in a group of disorders characterised by primary or secondary vasculitis. The aim of our study was to determine blood concentrations of von Willebrand factor (vWF), vypustĕno soluble intercellular adhesion molecule-1 (ICAM-1) and E-selectin (E-sel) in children with various rheumatic diseases and in paediatric controls and to correlate them with clinical and laboratory variables. METHODS AND RESULTS: Total of 28 healthy children (ZD) and 48 patients were evaluated: 6 with systemic lupus erythematosus (SLE), 7 with other diffuse connective tissue diseases (SSD), 11 with Henoch-Schönlein purpura (HSP), 14 with oligoarticular juvenile idiopathic arthritis (JIA) and 10 febrile controls (FC). Erythrocyte sedimentation rate (ESR), C-reactive protein (CRP) and full blood count were recorded. ICAM-1, E-sel and vWF concentrations were measured by sandwich ELISA kits. In SLE patients' concentrations of vWF and ICAM-1 were significantly higher than in healthy (p < 0.05), but not febrile controls. ICAM-1 was significantly increased also in SSD group when compared to healthy children (p < 0.01). Differences in other groups did not reach statistical significance. Significant negative correlation with age was observed for the group as a whole, E-sel correlated with leukocyte and thrombocyte counts (p < 0.01), both molecules with CRP (p < 0.05) and with each other (p < 0.01). CONCLUSIONS: Combined measurement of vWF, ICAM-1 and E-sel as possible markers of endothelial activation in such vypustĕno wide spectrum of paediatric patients and controls is unique vypustĕno. Our finding of increased concentrations of vWF and/or ICAM-1 in children with systemic autoimmune diseases underlines the importance of endothelial involvement in these disorders, but their predictive value in the disease monitoring needs to be further studied.
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