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To investigate the clinical significance of kinetic changes in quantitative expression of human leukocyte antigen DR (HLA-DR) in severely burned patients.
The blood samples of 77 extensively burned patients (>30% of total body surface area) were serially collected in the present study. The expression of HLA-DR on CD14(+) mononuclear cell surface in burned patients were quantified by flow cytometry (using monoclonal antibody, QuantiBRITETM Anti-HLA-DR PE(*)/Anti-Monocyte PerCP-Cy5.5) on days 1, 3, 5, 7, 14, 21 and 28 post burn.
The expressions of HLA-DR on CD14(+) mononuclear cell surface in severely burned patients were significantly lower than those in healthy volunteers from the first day post burn (P < 0.05), and the value of HLA-DR expression was negatively correlated with the burned area (r = -0.7232, P < 0.05). The expression of HLA-DR in patients complicated with multiple organ dysfunction syndrome (MODS) was persistently decreased following major burns, and it was significantly lower than that of non-