IRANIAN JOURNAL OF PEDIATRICS, cilt.26, sa.4, 2016 (SCI-Expanded, Scopus)
Background: Matrix metalloproteinase-9 (MMP-9) is an enzyme implicated in the pathogenesis of renal diseases. Renal involvement is the principal cause of morbidity and mortality in children with Henoch-Schonlein purpura (HSP).