IgG reactivity against non‐conformational NH2‐terminal epitopes of the desmoglein 3 ectodomain relates to clinical activity and phenotype of pemphigus vulgaris
- 30 June 2006
- journal article
- Published by Wiley in Experimental Dermatology
- Vol. 15 (8), 606-614
- https://doi.org/10.1111/j.1600-0625.2006.00451.x
Abstract
Pemphigus vulgaris (PV) is an autoimmune disease caused by immunoglobulin G (IgG) autoantibodies against the desmosomal adhesion molecules, desmoglein (Dsg)3 and Dsg1. The aim of the study was to relate IgG reactivity of 123 PV sera and 40 control sera against NH(2)-terminal non-conformational epitopes of Dsg3 and Dsg1 with disease activity and clinical phenotype by enzyme-linked immunosorbent assay. The results show that (i) the overall reactivity and the titres of IgG reactive with the Dsg3 ectodomain, Dsg3(1-566), significantly correlated with the disease activity of the PV patients; (ii) IgG reactivity against the NH(2)-terminus of Dsg3, Dsg3(1-161), was associated with active PV while there was no direct correlation between the IgG titres and the disease activity; (iii) IgG reactivity against the NH(2)-terminus of Dsg3, Dsg3(1-161), was associated with mucosal and mucocutaneous PV; (iv) IgG titres against a small stretch of the NH(2)-terminus of Dsg3, Dsg3(25-88), were associated with active PV; and (v) IgG in the PV sera detected non-conformational epitopes in addition to the previously identified conformation-dependent epitopes of the Dsg3 and Dsg1 ectodomains.Keywords
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