Immunoelectron localization of HLA-DR, HLA-DP, and HLA-DQ antigens on the microvasculature in normal skin.

Suzumura, Y; Ohashi, M · J Am Acad Dermatol · 1993

basic_science · Level V

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Abstract

Expression of HLA-DP and HLA-DQ antigens on the microvasculature in normal skin is uncertain. We investigated expression of HLA-DR, HLA-DP, and HLA-DQ antigens on the microvasculature in normal skin by light and electron microscopic immunohistochemistry. HLA-DP and HLA-DQ antigens were expressed on the microvasculature, but the intensity of positiveness was variable. By immunoelectron microscopy, HLA-DR, HLA-DP, and HLA-DQ antigens were expressed on the endothelial cells of the microvasculature, but not on the pericytes and the smooth muscle cells. The luminal surface of endothelial cells had a stronger expression of these antigens than the abluminal surface. HLA-DR, HLA-DP, and HLA-DQ antigens are expressed on endothelial cells of the microvasculature in normal skin.

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