title: IgG and IgA classes of anti-neutrophil cytoplasmic autoantibodies in a 13-year-old girl with recurrent Henoch-Schonlein purpura.
abstract: We describe a 13-year-old girl with recurrent Henoch-Schonlein purpura whose symptoms were precipitated by upper respiratory tract infections. Her serum was positive for both IgG and IgA classes of anti-neutrophil cytoplasmic autoantibodies by immunofluorescence. The titers of both autoantibodies correlated with disease activity. The immunopathology underlying these findings is discussed.
authors: Department of Pediatrics, State University of New York, Stony Brook 11794.
authors: J J
authors: JJ
authors: Lin
authors: C L
authors: CL
authors: Stewart
authors: F J
authors: FJ
authors: Kaskel
authors: R N
authors: RN
authors: Fine
mesh_terms: D000293:Adolescent; D019268:Antibodies, Antineutrophil Cytoplasmic; D001323:Autoantibodies / Q000032:analysis*; D015415:Biomarkers / Q000032:analysis; D005260:Female; D005455:Fluorescent Antibody Technique; D006801:Humans; D011695:IgA Vasculitis / Q000276:immunology* / Q000473:pathology; D007070:Immunoglobulin A / Q000032:analysis*; D007074:Immunoglobulin G / Q000032:analysis*; D012008:Recurrence; D014657:Vasculitis / Q000276:immunology
chemical_list: D019268:Antibodies, Antineutrophil Cytoplasmic; D001323:Autoantibodies; D015415:Biomarkers; D007070:Immunoglobulin A; D007074:Immunoglobulin G