4.6 Article

Histocompatibility leukocyte antigen-D related expression is specifically altered and predicts mortality in septic shock but not in other causes of shock

Journal

SHOCK
Volume 22, Issue 6, Pages 521-526

Publisher

LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/01.shk.0000143410.63698.57

Keywords

sepsis; septic shock; cardiogenic shock; hemorrhagic shock; monocytes; HLA-DR antigens; flow cytometry

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Although the expression of monocyte histocompatibility leukocyte antigen (HLA)-DR has been shown to be decreased during human sepsis, its level of expression in other nonseptic critical conditions is unclear. The aim of this study was to compare the level of HLA-DR expression on circulating monocytes among patients with septic, hemorrhagic, and cardiogenic shocks and severe sepsis without shock. At admission, HLA-DR expression was exclusively decreased in patients with septic shock (n = 30; P < 0.001), whereas the expression was similar between the other studied groups: cardiogenic shock (n = 16), hemorrhagic shock (n = 11), severe sepsis without shock (n = 18), and healthy volunteers (n = 8). HLA-DR expression was not predictive for overall mortality, but at day 1, an HLA-DR expression of less than 14 of mean fluorescence intensity (that corresponds to 40% labeled monocytes) was predictive of mortality exclusively in patients with septic shock (odds ratio, 11.4 and 95% confidence interval, 1.7; 78.4; P < 0.008). Catecholamine infusion, mechanical ventilation, positive blood culture, and number of units of blood or plasma transfused did not correlate with decreased HLA-DR expression. Thus, the decrease in HLA-DR expression is specific to septic shock and is associated, in septic shock patients, with increased mortality risk.

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