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Tomasz Misztal, Katarzyna Przesław, Tomasz Rusak, Marian Tomasiak
Using porcine blood, we tested the hypothesis that peroxynitrite (ONOO(-)) may affect platelet-fibrin clot formation, clot retraction rate (CRR) and fibrinolysis through the inhibition of platelet energy production. It was found that ONOO(-) reduces CRR and enlarges final clot size in platelet rich plasma (PRP) (IC(50)=100μM) and in whole blood (IC(50)=200μM) dose-dependently. In a reconstituted system (washed platelets+fibrinogen), CRR was inhibited by 5-100nM ONOO(-) (IC(50)=25nM). Concentrations of ONOO(-) reducing CRR in PRP, inhibited platelet oxygen consumption, augmented lactate production and decreased total ATP contents in clots derived from PRP...
January 2013: Thrombosis Research
Pär I Johansson, Trine Stissing, Louise Bochsen, Sisse R Ostrowski
Death due to trauma is the leading cause of lost life years worldwide, with haemorrhage being responsible for 30-40% of trauma mortality and accounting for almost 50% of the deaths the initial 24 h. On admission, 25-35% of trauma patients present with coagulopathy, which is associated with a several-fold increase in morbidity and mortality. The recent introduction of haemostatic control resuscitation along with emerging understanding of acute post-traumatic coagulability, are important means to improve therapy and outcome in exsanguinating trauma patients...
2009: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine
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