PMID: 9649678Jul 3, 1998Paper

Adhesion molecule expression in basal cell carcinoma

European Journal of Dermatology : EJD
M VerhaeghM Neumann

Abstract

Basal cell carcinomas (BCCs) are frequently associated with a peritumoral mononuclear infiltrate. Until now, the function of this inflammatory infiltrate and its possible role in the control of tumor growth is unclear. Mechanisms controlling endothelial and target cell adhesiveness for leukocytes are important features in the development of a specific local immune response. The expression and distribution of the adhesion molecules ICAM-1, VCAM-1 and E-selectin by microvascular endothelial cells and tumor cells, together with their leukocyte receptors LFA-1, VLA-4 and CLA respectively, were studied in 33 BCCs of different histological subtypes. In normal skin, ICAM-1 is expressed by resting endothelial cells, whereas VCAM-1 and E-selectin expression correlates with endothelial activation. The epidermis in normal conditions displays no ICAM-1, VCAM-1, or E-selectin expression. In BCC, endothelial ICAM-1 expression was only slightly increased compared to normal skin, whereas expression of endothelial VCAM-1 and E-selectin was low or absent in all BCCs examined. Peritumoral infiltrates contained mostly LFA-1-expressing lymphocytes, with minimal VLA-4 and CLA positivity. In none of the cases studied was adhesion molecule expression ...Continue Reading

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