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  • 1
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background Cicatricial pemphigoid (CP) is an autoimmune subepidermal blistering disease where autoantibodies target various components of the dermal–epidermal junction, including the bullous pemphigoid antigen 180 (BP180). Objective We determined the exact specificity of circulating IgG and IgA autoantibodies to BP180 in a large number of CP patients. Methods Twenty-six consecutive CP sera were analysed by Western blotting using a panel of cell-derived and recombinant proteins covering the entire BP180 molecule. Results Circulating autoantibodies were detected in all CP sera. Seven sera reacting with laminin-5 were excluded from further analyses; the remaining 19 sera recognized BP180, including six sera (32%) that showed only IgA reactivity to this protein. With the combined use of the soluble BP180 ectodomain (LAD-1) and recombinant BP180 NC16A, 16 of these 19 CP sera (84%) targeted BP180. IgG reactivity was preferentially found against NC16A, whereas IgA antibodies predominantly recognized LAD-1. Thirty-two per cent of the BP180-reative sera revealed reactivity with the intracellular domain of this protein. Conclusions Our findings demonstrate that autoantibodies in CP target epitopes on both extra- and intracellular domains of BP180 and highlight the importance of testing for both IgG and IgA reactivity in these patients' sera.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background Type XVII collagen promotes adhesion of basal keratinocytes to epidermal basement membrane, and is the target of disease in patients with certain inherited or acquired blistering diseases. Two forms of type XVII collagen are produced by cultured human keratinocytes: a 180-kDa full-length, transmembrane protein, and a recently identified 120-kDa soluble fragment that corresponds to its collagenous ectodomain. Objectives We aimed to determine the incidence and pattern of reactivity of autoantibodies against the 180- and 120-kDa forms of type XVII collagen in sera from 40 patients with bullous pemphigoid (BP), pemphigoid gestationis or cicatricial pemphigoid (CP), as well as six patients with linear IgA dermatosis (LAD). Methods Various immunochemical techniques were used. Results These studies found that the 120-kDa fragment of type XVII collagen was bound by circulating autoantibodies in 13 of 38 patients with BP or CP and all six patients with LAD. While many pemphigoid sera had specific reactivity against one but not both forms of this protein, autoantibodies from patients with LAD bound only the soluble ectodomain. Conclusions These findings are consistent with the presence of both neoepitopes and cross-reactive epitopes on the ectodomain of type XVII collagen. The finding that sera from patients with LAD showed specific reactivity to epidermal basement membrane suggests that such neoepitopes are present in human skin and that their targeting by autoantibodies may contribute to disease pathogenesis.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Assessing Writing 1 (1994), S. 91-107 
    ISSN: 1075-2935
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Linguistics and Literary Studies , Education
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Assessing Writing 1 (1994), S. 143-145 
    ISSN: 1075-2935
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Linguistics and Literary Studies , Education
    Type of Medium: Electronic Resource
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