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<dc:title xml:lang="fr">Étude des mécanismes d’activation des polynucléaires neutrophiles au cours du choc septique associée à une coagulation intravasculaire disséminée (CIVD)</dc:title>
<dcterms:alternative xml:lang="en">Study of neutrophil activation mechanisms during septic shock associated with disseminated intravascular coagulation (DIC)</dcterms:alternative>
<dc:subject xml:lang="fr">Neutrophiles</dc:subject>
<dc:subject xml:lang="fr">NETose</dc:subject>
<dc:subject xml:lang="fr">Choc Septique</dc:subject>
<dc:subject xml:lang="fr">Coagulation Intravasculaire Disséminée</dc:subject>
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<dc:subject xml:lang="en">NETosis</dc:subject>
<dc:subject xml:lang="en">Septic shock</dc:subject>
<dc:subject xml:lang="en">Disseminated intravascular coagulation</dc:subject>
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<dcterms:abstract xml:lang="fr">La coagulation intravasculaire disséminée (CIVD) est une complication sévère du choc septique. Sa physiopathologie est notamment caractérisée par une activation cellulaire, notamment des polynucléaires neutrophiles (PNN) via les Neutrophils Extracellular Traps (NET) qui capturent les pathogènes, jouant un rôle essentiel dans l’activation de la coagulation et le recrutement de cellules immunitaires. Dans ce travail, nous avons étudié dans les PNN de 80 patients l’expression des TLR (qui reconnaissent les pathogènes) et mis en évidence des différences d’expression dans les formes sévères d’infection. D’autre part, nous avons étudié les protéines associées à l’activation du PNN dans la CIVD du choc septique identifiées par analyse protéomique, révélant le rôle majeur du complexe Mini Chromosome Maintenance dans la survenue de la NETose. Ce résultat confirme le rôle des PNN dans les phénomènes de thrombose et permet d’envisager de nouvelles cibles thérapeutiques dans la CIVD du choc septique.</dcterms:abstract>
<dcterms:abstract xml:lang="en">Disseminated intravascular coagulation (DIC) is a severe complication of septic shock. Its pathophysiology is notably characterized by cellular activation, particularly of polymorphonuclear neutrophils (PMNs) through Neutrophil Extracellular Traps (NETs), which capture pathogens and play a crucial role in coagulation activation and immune cell recruitment. In this study, we investigated the expression of Toll-Like Receptors (TLRs), which recognize pathogens, in PMNs from 80 patients, highlighted differences in expression in severe forms of infection. Furthermore, we investigated proteins associated with PMN activation in DIC of septic shock identified through proteomic analysis, highlighting the significant role of the Mini Chromosome Maintenance complex in NETosis. This finding confirms the role of PMNs in thrombotic events and suggests new therapeutic targets for DIC in septic shock.</dcterms:abstract>
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