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Recombinant activated protein C in sepsis: endothelium protection or endothelium therapy?Regnault V; Levy BCrit Care 2007[]; 11 (1): 103Endothelium dysfunction is one of the hallmarks of sepsis. Looney and Mattay, in the previous issue of Critical Care, highlight the role of activated protein C (APC) as a protective endothelial drug in septic situations. Nevertheless, the results of in vivo studies are less explicit and it remains uncertain whether these properties are relevant in human septic shock. Before considering recombinant APC (rAPC) as a therapeutic drug for the endothelium, we have to demonstrate its efficiency to protect or to reduce endothelium injury when infused a long time after the septic challenge. Nevertheless, if rAPC is efficient when infused in the early phase of septic challenge, we thus need to treat our patients earlier. At the least, genetically engineered variants have been designed with greater anti-apoptotic activity and reduced anticoagulant activity relative to wild-type APC. Further studies are needed to demonstrate the usefulness of these variants in septic shock therapy.|Animals[MESH]|Blood Coagulation[MESH]|Blood Coagulation Factors/physiology[MESH]|Cytoprotection[MESH]|Endothelium, Vascular/*drug effects[MESH]|Humans[MESH]|Protein C/*pharmacology[MESH]|Receptors, Cell Surface/physiology[MESH]|Recombinant Proteins/*pharmacology[MESH]|Sepsis/*drug therapy/physiopathology[MESH] |
