title: HLA-DP-positive T cells in patients with systemic lupus erythematosus.
abstract: HLA-DP+ T cells in peripheral blood from 23 patients with systemic lupus erythematosus (SLE) were examined using two-colour flow cytometry analysis. A marked increase of HLA-DP+ T cells was observed in patients with SLE (20.5-98.7%; 59.8 +/- 20.8%) in comparison to normal subjects (1.3-20.6%; 11.1 +/- 7.2%), and the ratio of these cells greatly exceeded that of the HLA-DR+ T cells (6.5-49.1%; 21.5 +/- 12.7%). This high frequency of HLA-DP+ T cells in patients with active SLE decreased with prednisolone therapy. When the lymphocytes from normal subjects were stimulated with PHA in vitro, HLA-DP+ T cells increased from 1.8 to 59.2%. Therefore, it appears that the HLA-DP antigen expression on T cells is a practical marker for monitoring changes in the proportion of activated T cells in patients with SLE during the course of therapy.
authors: Department of Internal Medicine, Juntendo University, School of Medicine, Tokyo, Japan.
authors: Y
authors: Y
authors: Tokano
authors: T
authors: T
authors: Hishikawa
authors: T
authors: T
authors: Hirose
authors: I
authors: I
authors: Sekigawa
authors: H
authors: H
authors: Hashimoto
authors: K
authors: K
authors: Okumura
authors: S
authors: S
authors: Hirose
mesh_terms: D000328:Adult; D015415:Biomarkers; D005260:Female; D005434:Flow Cytometry; D006682:HLA-DP Antigens; D006801:Humans; D066298:In Vitro Techniques; D008180:Lupus Erythematosus, Systemic / Q000276:immunology*; D008213:Lymphocyte Activation; D008297:Male; D008875:Middle Aged; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D015415:Biomarkers; D006682:HLA-DP Antigens