OBJECTIVE: To evaluate the prevalence of IgA and IgG antineutrophil cytoplasmic antibodies (ANCAs) in erythema elevatum diutinum in comparison with 2 other groups of neutrophilic dermatoses: Sweet syndrome and pyoderma gangrenosum. DESIGN: Detection of IgA and IgG ANCAs in the serum of patients with neutrophilic dermatoses and characterization of the previously known antigenic targets. SETTING: All serum was analyzed without knowledge of diagnosis in the Immunology Department, Pitié-Salpêtrière Hospital, Paris, France. PATIENTS: Ten patients with erythema elevatum diutinum, 10 with Sweet syndrome, 10 with pyoderma gangrenosum, and 10 healthy volunteers. MAIN OUTCOME MEASURES: IgA and IgG ANCAs were sought by indirect immunofluorescence with ethanol and formaldehyde-fixed human neutrophil preparations as the substrate. Enzyme-linked immunosorbent assays were further performed for antigen characterization. RESULTS: IgA ANCAs were observed in 60% and IgG ANCAs in 10 (33%) of the patients. All patients with erythema elevatum diutinum had IgA ANCAs. IgA fluorescence in formaldehyde-fixed neutrophils was restricted to those from patients with erythema elevatum diutinum. Enzyme-linked immunosorbent assays disclosed no single predominant target, and antigens remained largely undetermined in erythema elevatum diutinum. CONCLUSIONS: The ANCAs, particularly of IgA class, may prove to be a helpful paraclinical marker in erythema elevatum diutinum and an interesting perspective for understanding the pathophysiology of the disease. The nature of the unidentified targets and the pathogenicity of ANCAs, however, remain to be assessed.
OBJECTIVE: To evaluate the prevalence of IgA and IgG antineutrophil cytoplasmic antibodies (ANCAs) in erythema elevatum diutinum in comparison with 2 other groups of neutrophilic dermatoses: Sweet syndrome and pyoderma gangrenosum. DESIGN: Detection of IgA and IgG ANCAs in the serum of patients with neutrophilic dermatoses and characterization of the previously known antigenic targets. SETTING: All serum was analyzed without knowledge of diagnosis in the Immunology Department, Pitié-Salpêtrière Hospital, Paris, France. PATIENTS: Ten patients with erythema elevatum diutinum, 10 with Sweet syndrome, 10 with pyoderma gangrenosum, and 10 healthy volunteers. MAIN OUTCOME MEASURES: IgA and IgG ANCAs were sought by indirect immunofluorescence with ethanol and formaldehyde-fixed human neutrophil preparations as the substrate. Enzyme-linked immunosorbent assays were further performed for antigen characterization. RESULTS: IgA ANCAs were observed in 60% and IgG ANCAs in 10 (33%) of the patients. All patients with erythema elevatum diutinum had IgA ANCAs. IgA fluorescence in formaldehyde-fixed neutrophils was restricted to those from patients with erythema elevatum diutinum. Enzyme-linked immunosorbent assays disclosed no single predominant target, and antigens remained largely undetermined in erythema elevatum diutinum. CONCLUSIONS: The ANCAs, particularly of IgA class, may prove to be a helpful paraclinical marker in erythema elevatum diutinum and an interesting perspective for understanding the pathophysiology of the disease. The nature of the unidentified targets and the pathogenicity of ANCAs, however, remain to be assessed.
Authors: James M Kelley; Paul A Monach; Chuanyi Ji; Yebin Zhou; Jianming Wu; Sumiaki Tanaka; Alfred D Mahr; Sharleen Johnson; Carol McAlear; David Cuthbertson; Simon Carette; John C Davis; Paul F Dellaripa; Gary S Hoffman; Nader Khalidi; Carol A Langford; Phillip Seo; E William St Clair; Ulrich Specks; John H Stone; Robert F Spiera; Steven R Ytterberg; Peter A Merkel; Jeffrey C Edberg; Robert P Kimberly Journal: Proc Natl Acad Sci U S A Date: 2011-12-06 Impact factor: 11.205
Authors: Esha Oommen; Amber Hummel; Lisa Allmannsberger; David Cuthbertson; Simon Carette; Christian Pagnoux; Gary S Hoffman; Dieter E Jenne; Nader A Khalidi; Curry L Koening; Carol A Langford; Carol A McAlear; Larry Moreland; Philip Seo; Antoine Sreih; Steven R Ytterberg; Peter A Merkel; Ulrich Specks; Paul A Monach Journal: Clin Exp Rheumatol Date: 2017-03-01 Impact factor: 4.473
Authors: Hubert de Boysson; Nicolas Martin Silva; Claire de Moreuil; Antoine Néel; Mathilde de Menthon; Olivier Meyer; David Launay; Christian Pagnoux; Loïc Guillevin; Xavier Puéchal; Boris Bienvenu; Achille Aouba Journal: Medicine (Baltimore) Date: 2016-03 Impact factor: 1.889