ICAM-1 and LFA-1 expressions in the lesional skin of annular erythema associated with Sjögren syndrome.
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.
Katayama
I
I
Department of Dermatology, Tokyo Medical and Dental University, School of Medicine, Japan.
Asai
T
T
Nishiyama
S
S
Nishioka
K
K
D000328:Adult; D015815:Cell Adhesion Molecules / Q000032:analysis*; D004890:Erythema / Q000209:etiology* / Q000378:metabolism / Q000473:pathology; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D018799:Intercellular Adhesion Molecule-1; D015603:Keratinocytes / Q000473:pathology*; D016169:Lymphocyte Function-Associated Antigen-1 / Q000032:analysis*; D008297:Male; D008875:Middle Aged; D012859:Sjogren's Syndrome / Q000150:complications* / Q000378:metabolism / Q000473:pathology
D015815:Cell Adhesion Molecules; D016169:Lymphocyte Function-Associated Antigen-1; D018799:Intercellular Adhesion Molecule-1