IgG/IgA pemphigus with IgG and IgA antidesmoglein 1 antibodies detected by enzyme-linked immunosorbent assay

N. Oiso, C. Yamashita, K. Yoshioka, Masayuki Amagai, A. Komai, Y. Nagata, T. Hashimoto, M. Ishii

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Pemphigus is an autoimmune mucocutaneous bullous disease characterized by autoantibodies against the cell surfaces of epidermal keratinocytes. Six cases with deposition of both IgG and IgA on keratinocyte cell surfaces have been reported in the recent literature. We provisionally termed these cases IgG/IgA pemphigus. We describe a 42-year-old Japanese woman with clinical and histopathological features resembling herpetiform pemphigus who demonstrated in vivo bound and circulating anticell surface autoantibodies of both IgG and IgA classes on immunofluorescence examination. Enzyme-linked immunosorbent assay using baculovirus-expressed recombinant desmoglein (Dsg) 1 and Dsg 3 showed that both IgG and IgA antibodies reacted with Dsg1. The reactivity was completely adsorbed with preincubation of serum with Dsg1 baculoprotein, further confirming the exclusive reactivity of both IgG and IgA antibodies with Dsg1. This is the second case of IgG/IgA pemphigus in which the human target antigens for both IgG and IgA antibodies have been unequivocally identified. This study provides further evidence that IgG/IgA pemphigus is a distinct disease entity.

Original languageEnglish
Pages (from-to)1012-1017
Number of pages6
JournalBritish Journal of Dermatology
Volume147
Issue number5
DOIs
Publication statusPublished - 2002

Fingerprint

Pemphigus
Immunoglobulin A
Immunoglobulin G
Enzyme-Linked Immunosorbent Assay
Antibodies
Keratinocytes
Autoantibodies
Desmoglein 3
Desmoglein 1
Baculoviridae
Fluorescent Antibody Technique
Antigens
Serum

Keywords

  • Antikeratinocyte cell surface antibodies
  • Desmoglein 1
  • Enzyme-linked immunosorbent assay
  • IgG/IgA pemphigus

ASJC Scopus subject areas

  • Dermatology

Cite this

IgG/IgA pemphigus with IgG and IgA antidesmoglein 1 antibodies detected by enzyme-linked immunosorbent assay. / Oiso, N.; Yamashita, C.; Yoshioka, K.; Amagai, Masayuki; Komai, A.; Nagata, Y.; Hashimoto, T.; Ishii, M.

In: British Journal of Dermatology, Vol. 147, No. 5, 2002, p. 1012-1017.

Research output: Contribution to journalArticle

Oiso, N. ; Yamashita, C. ; Yoshioka, K. ; Amagai, Masayuki ; Komai, A. ; Nagata, Y. ; Hashimoto, T. ; Ishii, M. / IgG/IgA pemphigus with IgG and IgA antidesmoglein 1 antibodies detected by enzyme-linked immunosorbent assay. In: British Journal of Dermatology. 2002 ; Vol. 147, No. 5. pp. 1012-1017.
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AU - Komai, A.

AU - Nagata, Y.

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AU - Ishii, M.

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AB - Pemphigus is an autoimmune mucocutaneous bullous disease characterized by autoantibodies against the cell surfaces of epidermal keratinocytes. Six cases with deposition of both IgG and IgA on keratinocyte cell surfaces have been reported in the recent literature. We provisionally termed these cases IgG/IgA pemphigus. We describe a 42-year-old Japanese woman with clinical and histopathological features resembling herpetiform pemphigus who demonstrated in vivo bound and circulating anticell surface autoantibodies of both IgG and IgA classes on immunofluorescence examination. Enzyme-linked immunosorbent assay using baculovirus-expressed recombinant desmoglein (Dsg) 1 and Dsg 3 showed that both IgG and IgA antibodies reacted with Dsg1. The reactivity was completely adsorbed with preincubation of serum with Dsg1 baculoprotein, further confirming the exclusive reactivity of both IgG and IgA antibodies with Dsg1. This is the second case of IgG/IgA pemphigus in which the human target antigens for both IgG and IgA antibodies have been unequivocally identified. This study provides further evidence that IgG/IgA pemphigus is a distinct disease entity.

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