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Two Cases of Atypical Bullous Disease Showing Linear IgG and IgA Deposition in the Basement Membrane Zone
Author(s) -
Kawahara Yoshie,
Hashimoto Takashi,
Watanabe Kyoko,
Kurihara Seiichi,
Matsuo Itsuro,
Nishikawa Takeji
Publication year - 1996
Publication title -
the journal of dermatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 65
eISSN - 1346-8138
pISSN - 0385-2407
DOI - 10.1111/j.1346-8138.1996.tb04008.x
Subject(s) - epidermolysis bullosa acquisita , bullous pemphigoid , basement membrane , immunofluorescence , antibody , pathology , direct fluorescent antibody , immunoglobulin a , pemphigoid , chemistry , medicine , dermatology , immunology , immunoglobulin g
Abstract Patients showing coexistent linear IgG and IgA deposition along the basement membrane zone on direct immunofluorescence have been described as either bullous pemphigoid, epidermolysis bullosa acquisita, linear IgA bullous dermatosis, or cicatricial pemphigoid, depending on the clinical features and laboratory findings. In the present report, we describe two cases showing atypical clinical features distinct from those of other known bullous diseases. No circulating antibodies were detected by indirect immunofluorescence of normal human skin. Indirect immunofluorescence of 1 M NaCl split skin revealed IgG and/or IgA antibodies reactive with the dermal side of the split. Immunoblotting of normal human epidermal and dermal extracts showed no apparent reactivity with known autoantigens. The results suggest that there may be a unique and distinct bullous disease with linear IgG and IgA deposition at the basement membrane zone.