Antiepiligrin cicatricial pemphigoid. A subepithelial bullous disorder. Arch Dermatol 1994 Dec;130(12):1521-9
Date
12/01/1994Pubmed ID
7986125Scopus ID
2-s2.0-0028148241 (requires institutional sign-in at Scopus site) 187 CitationsAbstract
BACKGROUND: Epiligrin is a glycoprotein complex deposited in extracellular matrix by cultured human keratinocytes that serves as the major integrin ligand of these cells. In human skin, epiligrin is found at the interface of the lamina lucida and lamina densa in epidermal basement membrane where it is believed to be associated with anchoring filaments and plays an important role in keratinocyte adhesion.
METHODS AND RESULTS: We have identified six patients with a subepithelial bullous disorder of mucous membranes and skin who have IgG anti-basement membrane autoantibodies that immunoprecipitate epiligrin from human keratinocyte extracts and culture media. These patients' IgG autoantibodies also bind epiligrin in human keratinocyte extracellular matrix and epidermal basement membrane as determined by immunofluorescence and immunoelectron microscopy. Studies of 10 patients who are clinically indistinguishable from subjects with anti-epiligrin autoantibodies (ie, cicatricial pemphigoid patients) found that while seven had anti-basement membrane autoantibodies, the latter are directed exclusively against a region of epidermal basement membrane that does not contain epiligrin, are present in low titer (ie, < or = 1:10), do not react with keratinocyte extracellular matrix, and do not bind epiligrin (or any other specific antigen) in immunoprecipitation studies of human keratinocyte extracts or media. Antiepiligrin autoantibodies were also not detected in studies of 36 additional patients with bullous diseases or six normal volunteers.
CONCLUSIONS: Cicatricial pemphigoid is a disease phenotype in which patients' autoantibodies may target different constituents of epidermal basement membrane. Antiepiligrin autoantibodies are a specific immunologic marker for a group of patients with a disease entity that we propose to designate antiepiligrin cicatricial pemphigoid.
Author List
Domloge-Hultsch N, Anhalt GJ, Gammon WR, Lazarova Z, Briggaman R, Welch M, Jabs DA, Huff C, Yancey KBMESH terms used to index this publication - Major topics in bold
AdultAged
Autoantibodies
Cell Adhesion Molecules
Female
Fluorescent Antibody Technique
Humans
Male
Microscopy, Immunoelectron
Middle Aged
Pemphigoid, Benign Mucous Membrane
