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A novel subepidermal blistering disease with autoantibodies to a 200-kDa antigen of the basement membrane zone (vol 106, pg 465, 1996)
A novel subepidermal blistering disease with autoantibodies to a 200-kDa antigen of the basement membrane zone (vol 106, pg 465, 1996) JOURNAL OF INVESTIGATIVE DERMATOLOGY Zillikens, D., Kawahara, Y., Ishiko, A., Shimizu, H., Mayer, J., Rank, C. V., Liu, Z., Giudice, G. J., Tran, H. H., Marinkvch, M. P., Brocker, E. B., Hashimoto, T. 1996; 106 (6): 1332-1338Abstract
Several components of the basement membrane zone (BMZ) have been identified as antigenic targets in autoimmune bullous diseases. We report a novel disease with autoantibodies to a BMZ antigen that is different from the targets described so far. The patient suffering from this disorder showed tense bullae and severe mucous membrane involvement rapidly responding to oral tetracyclines and colchicine. Histopathologic findings resembled those of dermatitis herpetiformis. Direct immunofluorescence microscopy showed linear deposits of IgG and C3 at the BMZ. By indirect immunofluorescence studies on split human skin, using both 1 M NaCl and suction blistering for dermal-epidermal separation, IgG antibodies localized exclusively to the dermal side of the split. The antibodies were mainly of the IgG4 subclass. By Western blot analysis of epidermal and dermal extracts, the patient's serum unequivocally reacted with a dermal antigen of 200 kDa. It did not recognize bullous pemphigoid antigens, the autoantigen of epidermolysis bullosa acquisita, purified preparations of laminin-1 and laminin-5, or the recently described 105-kDa BMZ antigen. By immunoblotting of concentrated conditioned SCC-25 medium, the patient's antibodies reacted with a band of 200 kDa and several hands of lower molecular weight. No reactivity was seen with extracts of cultured human fibroblasts. By indirect immunogold electron microscopy, immunoreactants localized to the lower lamina lucida. After clearance of skin lesions, both indirect immunofluorescence and Western blot analysis became negative. This patient suffers from a novel autoimmune bullous disease with autoantibodies to a 200-kDa antigen of the BMZ.
View details for Web of Science ID A1996UR40400031