Callegaro EDAC, Nappi F, Lazzarini R, Lellis RF. Pretibial dystrophic epidermolysis bullosa.
An Bras Dermatol 2017;
92:126-128. [PMID:
29267469 PMCID:
PMC5726700 DOI:
10.1590/abd1806-4841.20175952]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 08/01/2016] [Indexed: 12/02/2022] Open
Abstract
Epidermolysis bullosa is a group of mechano-bullous genetic disorders caused by
mutations in the genes encoding structural proteins of the skin. Dystrophic
epidermolysis bullosa is caused by mutations in the COL7A1 gene encoding
collagen VII, the main constituent of anchoring fibrils. In this group, there
are autosomal dominant and recessive inheritances. The pre-tibial form is
characterized by the presence of blisters, milia, atrophic scars and lesions
similar to lichen planus. The diagnosis is clinical and laboratory and subtypes
are distinguished by means of immunohistochemical and ultrastructural studies,
in addition to genetic differentiation. Electron microscopy and immunomapping
are used in the diagnosis.
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