Early activation of cutaneous vessels and epithelial cells is characteristic of acute systemic onset juvenile idiopathic arthritis.

Abstract excerpt

In biopsies of 16 patients (mean: 5.2 years) with acute systemic onset juvenile idiopathic arthritis (SOJIA), we analysed the initial cellular events during the characteristic cutaneous rash for composition of the infiltrate and for expression of activation markers on epithelial and endothelial cells. Despite the fleeting nature of the rash, there was a characteristic infiltration of neutrophils and monocytes,...

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