Detection of Anti-Pentraxin-3 Autoantibodies in ANCA-Associated Vasculitis

Pentraxin 3 (PTX3), in common with myeloperoxidase and proteinase 3, is stored in human neutrophil granules and is expressed on apoptotic neutrophil surface. We therefore investigated the presence of anti-PTX3 autoantibodies (aAbs) in the sera of antineutrophil cytoplasmic antibodies (ANCA)-associat...

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Veröffentlicht in:PloS one 2016-01, Vol.11 (1), p.e0147091-e0147091
Hauptverfasser: Simon, Amélie, Subra, Jean-François, Guilpain, Philippe, Jeannin, Pascale, Pignon, Pascale, Blanchard, Simon, Garo, Erwan, Jaillon, Sébastien, Chevailler, Alain, Renier, Gilles, Puéchal, Xavier, Bottazzi, Barbara, Mantovani, Alberto, Delneste, Yves, Augusto, Jean-François
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Sprache:eng
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Zusammenfassung:Pentraxin 3 (PTX3), in common with myeloperoxidase and proteinase 3, is stored in human neutrophil granules and is expressed on apoptotic neutrophil surface. We therefore investigated the presence of anti-PTX3 autoantibodies (aAbs) in the sera of antineutrophil cytoplasmic antibodies (ANCA)-associated vasculitis (AAV) patients. Presence of anti-PTX3 autoantibodies was analysed by a specific enzyme-linked immunosorbent assay in sera from 150 patients with microscopic polyangiitis (MPA), granulomatosis with polyangiitis (GPA), and eosinophilic granulomatosis with polyangiitis (EGPA), and in sera of 227 healthy subjects (HS), 40 systemic sclerosis (SSc) patients, and 25 giant cell arteritis patients (GCA). Using indirect immunofluorescence on fixed human neutrophils, we also analyzed the staining pattern associated with the presence of anti-PTX3 aAbs. Anti-PTX3 aAbs were detected in 56 of 150 (37.3%) of the AAV patients (versus 12 of 227 (5.3%) of HS, p
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0147091