Content » Vol 74, Issue 1

Investigative Report

E-selectin and interleukin-2 receptor alpha-chain expression in alopecia universalis.

Rilo HL, Carroll PB, Subbotin V, Johnson N, Van Thiel DH, Thomson AW
DOI: 10.2340/00015555743336


A study of the histopathological abnormalities in a case of alopecia universalis was accompanied by immunohistochemical analysis of the expression of intercellular adhesion molecule-1 (ICAM-1) and E-selectin (formerly known as endothelial leukocyte adhesion molecule-1) within the skin. ICAM-1 expression on follicular epithelium co-localized with intraepithelial mononuclear cells (MNC) positive for the interleukin-2 receptor alpha-chain (IL-2R) or HLA-DR. Aberrant expression of E-selectin was observed on dermal endothelium. Although restricted to one case, these new observations concerning the expression of E-selectin and IL-2R in alopecia universalis are consistent with the view that extravascular trafficking of MNC into follicular epithelium may play a key role in the pathogenesis of alopecia universalis and that use of agents that interfere with this process may be an effective therapeutic strategy.


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