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Clinical immunology : the official journal of the Clinical Immunology Society v.183, 2017년, pp.254 - 262   SCI SCIE SCOPUS
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Nucleosomes and neutrophil extracellular traps in septic and burn patients

Kaufman, Tomás (Laboratory of Experimental Thrombosis, Institute of Experimental Medicine-CONICET, National Academy of Medicine, José ) ; Magosevich, Débora (Andrés Pacheco de Melo 3081, Buenos Aires, Argentina ) ; Moreno, María Carolina (Sagrado Corazón Clinic, Bartolomé ) ; Guzman, María Alejandra (Mitre 1955, Buenos Aires, Argentina ) ; D'Atri, Lina Paola (Bazterrica Clinic, Billinghurst 2072, Buenos Aires, Argentina ) ; Carestia, Agostina (Dr. Umberto Illia Burn Hospital, Av. Pedro Goyena 369, Buenos Aires, Argentina ) ; Fandiño, María Eugenia (Laboratory of Experimental Thrombosis, Institute of Experimental Medicine-CONICET, National Academy of Medicine, José ) ; Fondevila, Carlos (Andrés Pacheco de Melo 3081, Buenos Aires, Argentina ) ; Schattner, Mirta (Laboratory of Experimental Thrombosis, Institute of Experimental Medicine-CONICET, National Academy of Medicine, José ) ;
  • 초록  

    Abstract NETosis is a host defense mechanism associated with inflammation and tissue damage. Experimental models show that platelets and von Willebrand factor (VWF) are key elements for intravascular NETosis. We determined NETosis in septic and burn patients at 1 and 4days post-admission (dpa). Nucleosomes were elevated in patients. In septics, they correlated with Human Neutrophil Elastase (HNE)-DNA complexes and SOFA score at 1dpa, and were associated with mortality. Patient's neutrophils had spontaneous NETosis and were unresponsive to stimulation. Although platelet P-selectin and TNF-α were increased in both groups, higher platelet TLR-4 expression, VWF levels and IL-6 were found in septics at 1dpa. Neither platelet activation markers nor cytokines correlated with nucleosomes or HNE-DNA. Nucleosomes could be indicators of organ damage and predictors of mortality in septic but not in burn patients. Platelet activation, VWF and cytokines do not appear to be key mediators of NETosis in these patient groups. Highlights Nucleosomes and HNE-DNA complexes are elevated in septic and burn patients. Septics' nucleosomes correlate with SOFA at 1dpa and were associated with mortality. Patient's neutrophils exhibit spontaneous NETosis and are unresponsive to stimulation. Nucleosomes could be organ damage indicators and mortality predictors in septics. Platelets, VWF and cytokines do not seem to mediate NETosis in these patients.


  • 주제어

    Neutrophils .   NETs .   Sepsis .   Inflammation .   Platelets .   Burn.  

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