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  • Title: Neutrophil Fluorescence: A New Indicator of Cell Activation During Septic Shock-Induced Disseminated Intravascular Coagulation.
    Author: Stiel L, Delabranche X, Galoisy AC, Severac F, Toti F, Mauvieux L, Meziani F, Boisramé-Helms J.
    Journal: Crit Care Med; 2016 Nov; 44(11):e1132-e1136. PubMed ID: 27441905.
    Abstract:
    OBJECTIVE: To investigate the contribution of neutrophil activation as innate immune cells during septic shock-induced disseminated intravascular coagulation. DESIGN: Prospective study. SETTING: One University Hospital ICU. PARTICIPANTS: Hundred patients with septic shock. Thirty-five patients had disseminated intravascular coagulation according to Japanese Association for Acute Medicine 2006 score. INTERVENTION: None. MEASUREMENTS AND MAIN RESULTS: Neutrophil chromatin decondensation was assessed by measuring neutrophil fluorescence (NEUT-side-fluorescence light) labeled by a fluorochrome-based polymethine reagent using a routine automated flow cytometer Sysmex XN20 (Sysmex, Kobe, Japan) and neutrophil-derived CD66b microparticles by prothrombinase assay. Measurements in disseminated intravascular coagulation and no disseminated intravascular coagulation patients showed that a mean value of NEUT-side-fluorescence light above 57.3 arbitrary units had a sensitivity of 90.91% and a specificity of 80.60% for disseminated intravascular coagulation diagnosis. NEUT-side-fluorescence light was correlated to the CD66b microparticles/neutrophil count, a surrogate of neutrophil activation associated with septic shock-induced disseminated intravascular coagulation. CONCLUSION: NEUT-side-fluorescence light, routinely available, could prove an accurate biomarker of neutrophil activation.
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