ICAM-1 and LFA-1 Expressions in the Lesional Skin of Annular Erythema Associated with Sjögren Syndrome |
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Authors: | I Katayama T Asai S Nishiyama K Nishioka |
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Affiliation: | Department of Dermatology, Tokyo Medical and Dental University, School of Medicine, Japan. |
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Abstract: | ICAM-1 and LFA-1 expression was studied in the lesional skin of ten cases of annular erythema associated with Sjögren syndrome. Most of the infiltrating mononuclear cells around blood vessels expressed LFA-1 in addition to its strong expression on vascular endothelial cells and focal expression on the epidermal basal cell layer in 3 cases. ICAM-1 expression on vascular endothelial cells was similar to LFA-1, although relatively focal and weak expression was observed on mononuclear cells. ICAM-1 expression on keratinocytes was focal and limited to the basal cell layer in annular erythema. These findings suggest that strong expression of ICAM-1 on endothelial cells but not keratinocytes and LFA-1 on mononuclear cells might play some role in the induction of skin lesions in annular erythema associated with Sjögren syndrome. |
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Keywords: | sjögren syndrome annular erythema ICAM-1 LFA-1 |
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