title: [Laboratory indicators of endothelial involvement in rheumatic diseases associated with vasculitis in children].
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.
  
  
  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.
authors.affiliation: Klinika dĕtského a dorostového lékarství 1. LF UK a VFN, Praha. detske@lf1.cuni.cz
authors.forename: P
authors.initials: P
authors.lastname: Dolezalová
authors.forename: P
authors.initials: P
authors.lastname: Telekesová
authors.forename: D
authors.initials: D
authors.lastname: Nĕmcová
authors.forename: J
authors.initials: J
authors.lastname: Bĕlorová
authors.forename: J
authors.initials: J
authors.lastname: Kvasnicka
authors.forename: J
authors.initials: J
authors.lastname: Hoza
mesh_terms: D000293:Adolescent; D001171:Arthritis, Juvenile / Q000097:blood / Q000150:complications / Q000503:physiopathology; D015415:Biomarkers / Q000097:blood; D002648:Child; D002675:Child, Preschool; D019040:E-Selectin / Q000097:blood; D004730:Endothelium, Vascular / Q000503:physiopathology*; D005260:Female; D006801:Humans; D011695:IgA Vasculitis / Q000097:blood / Q000503:physiopathology; D018799:Intercellular Adhesion Molecule-1 / Q000097:blood; D008180:Lupus Erythematosus, Systemic / Q000097:blood / Q000503:physiopathology; D008297:Male; D012216:Rheumatic Diseases / Q000097:blood / Q000150:complications / Q000503:physiopathology*; D014657:Vasculitis / Q000097:blood / Q000150:complications / Q000503:physiopathology*; D014841:von Willebrand Factor / Q000032:analysis
chemical_list: D015415:Biomarkers; D019040:E-Selectin; D014841:von Willebrand Factor; D018799:Intercellular Adhesion Molecule-1