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Differential patterns of filaggrin expression in lamellar ichthyosis
Author(s) -
Peña Penabad,
PÉrez Arellano,
Ulrik Becker,
Gutierrez De Diego,
GarcÍA Salgado,
Maurizio Valle,
Unamuno PÉrez
Publication year - 1998
Publication title -
british journal of dermatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.304
H-Index - 179
eISSN - 1365-2133
pISSN - 0007-0963
DOI - 10.1046/j.1365-2133.1998.02549.x
Subject(s) - filaggrin , ichthyosis vulgaris , ichthyosis , lamellar ichthyosis , western blot , dermatology , immunohistochemistry , stratum corneum , medicine , biology , pathology , genetics , atopic dermatitis , gene
Lamellar ichthyosis (LI) is a rare genetic and congenital disturbance of keratinization that is phenotypically and genotypically heterogeneous. Filaggrin is one of the major components of the stratum corneum situated in the protein matrix and the cornified envelope. In view of the heterogeneity of LI, this study aimed at exploring filaggrin expression in the skin of patients suffering from the disease. Epidermal filaggrin expression was determined using immunohistochemical techniques and Western blot in 12 patients with LI and the findings were compared with those observed in four normal controls and eight patients with ichthyosis vulgaris. With Western blot, six different patterns of filaggrin expression were detected. The patients with similar clinical manifestations showed a similar pattern, as did members of the same family. Overall, higher filaggrin expression in scales correlated with a better prognosis. In patients receiving retinoids no variations in filaggrin expression during treatment were detected. Our results suggest that LI is heterogeneous as regards filaggrin expression. Filaggrin could therefore be used as a prognostic marker as well as being a marker of the basic defect involved in LI.