αEβ7 Expression Increases With the Extent of Cutaneous Involvement in Mycosis Fungoides

αEβ7 Expression Increases With the Extent of Cutaneous Involvement in Mycosis Fungoides

Cell adhesion molecules are essential to lymphocyte migration in neoplastic and inflammatory skin diseases. Our aim was to investigate possible differences in cell adhesion molecule expression between mycosis fungoides (MF) and inflammatory skin diseases (drug reactions and allergic contact dermatit...

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Bibliographic Details
Published in:The American journal of dermatopathology Vol. 41; no. 9; pp. 630 - 636
Main Authors: Barata, Mariangela Crispino, Teixeira, Solange Pistori, Batista, Mariana Dias, Tomimori, Jane, Landman, Gilles, Silva, Maria Regina Regis
Format: Journal Article
Language:English
Published: United States 01-09-2019
Subjects:
Aged
Biomarkers, Tumor - analysis
Biomarkers, Tumor - genetics
Biopsy, Needle
Brazil
Cell Adhesion Molecules - analysis
Cross-Sectional Studies
Dermatitis - genetics
Dermatitis - pathology
Disease Progression
Female
Hospitals, University
Humans
Immunohistochemistry
Integrins - metabolism
Male
Middle Aged
Mycosis Fungoides - genetics
Mycosis Fungoides - pathology
Prognosis
Retrospective Studies
Risk Assessment
Severity of Illness Index
Skin Neoplasms - genetics
Skin Neoplasms - pathology
Brazil
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Summary:Cell adhesion molecules are essential to lymphocyte migration in neoplastic and inflammatory skin diseases. Our aim was to investigate possible differences in cell adhesion molecule expression between mycosis fungoides (MF) and inflammatory skin diseases (drug reactions and allergic contact dermatitis). We selected 33 biopsies from patients with MF and 10 biopsies of patients with inflammatory skin diseases from Department of Pathology-Universidade Federal de São Paulo (UNIFESP) from January 1997 to December 2013. Expression of α4β1 integrin and αEβ7 integrin was assessed by immunohistochemistry in intraepidermal lymphocytes by counting 4 microscopic epidermal fields (×400) and comparing those between the 2 groups. We observed increased expression of integrin αEβ7 in intraepidermal lymphocytes in advanced stages of MF (T3 and T4). αEβ7 expression was detected in intraepidermal dendritic cells of MF and inflammatory diseases samples. The expression of E-cadherin in epidermal cells in MF outlined Pautrier microabscesses, whereas in inflammatory diseases, spongiosis reduced its expression in keratinocytes. The findings presented here support the idea that the lymphocyte migratory mechanism observed in neoplasms is similar to that of inflammatory processes of the skin.
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ISSN:0193-1091
1533-0311
DOI:10.1097/DAD.0000000000001397