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Photosensitive dermatitis with actinic reticuloid syndrome: an immunohistological study of the cutaneous infiltrate
Author(s) -
RALFKIAER ELISABETH,
WANTZIN GUNHILD LANGE,
STEIN H.,
MASON D.Y.
Publication year - 1986
Publication title -
british journal of dermatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.304
H-Index - 179
eISSN - 1365-2133
pISSN - 0007-0963
DOI - 10.1111/j.1365-2133.1986.tb02778.x
Subject(s) - transferrin receptor , pathology , alkaline phosphatase , monoclonal antibody , antigen , staining , t cell , immunohistochemistry , immunology , medicine , immune system , receptor , antibody , biology , biochemistry , enzyme
SUMMARY Cryostat sections of skin biopsies from five patients with chronic photosensitivity dermatitis with actinic reticuloid syndrome (PDAR) have been examined immunohistologically by the alkaline phosphatase: anti‐alkaline phosphatase staining technique using a panel of 24 monoclonal antibodies against lymphoid cells and their subsets. The lymphoid infiltrates in all cases had an essentially identical cellular composition, containing a mixture of T‐lymphocytes, T‐cell accessory cells (Langerhans cells) and other types of HLA‐DR positive dermal macrophages. In two patients there was an excess of T‐helper/inducer cells relative to T‐suppressor cells, while in the other three patients the numbers of T‐cells in these two subsets were approximately equal. Many of the infiltrating T‐cells expressed activation (HLA‐DR, interleukin‐2 receptor) or proliferation (the Ki67 nuclear antigen, transferrin receptor) associated markers. These data indicate that a T‐cell immune response is operative in cutaneous PDAR lesions.