Coagulation factors are essential for hemostasis. Here, we show that these factors also team up to degrade plasma proteins that are unrelated to hemostasis. Prolidase, SRC and amyloid β1-42 (Aβ1-42) are used as probes. Each probe, upon entering the blood circulation, binds and activates factor XII (FXII), triggering the intrinsic and common coagulation cascades, which in turn activate factor VI...

Patients with severe infections almost invariably exhibit evidence of activation of the coagulation system. The lungs are amongst the most frequently affected organs during severe infection and sepsis. The abundant presence of intravascular and extravascular fibrin appears to be a specific hallmark of acute lung injury after sepsis. Tissue factor (TF) is regarded to be the primary initiator of ...

Total endothelial destruction results in the exposure of sub-endothelial collagen fibers causing platelet aggregation, adherence, and release of platelet-related factors. This series of events initiates the intrinsic pathway of blood coagulation by activating factor XII. Ideally, sclerosing solutions otherwise should not cause activation or release of thromboplastic activity because this would ...

PURPOSE Although coagulation activation has been reported in chronic urticaria, data pertaining to detailed changes in coagulation factors and global coagulation status are lacking. The current study evaluated global coagulation status in patients with chronic urticaria using thrombin generation assay (TGA) and the levels of individual coagulation factors. METHODS Patients with chronic urtica...

Under physiological conditions, the coagulation system is designed to maintain the circulating blood in a fluid state, but act towards restoration of vascular integrity by rapid clot formation after vessel injury. Historically, the coagulation cascade was divided into 2 major systems: the extrinsic and the intrinsic pathway (Figure 1).1 The tissue factor (TF)factor VII/VIIa (FVII/FVIIa) complex...

Abstract The maintenance of hemostasis to ensure vascular integrity is dependent upon the rapid conversion zymogen species coagulation cascade their enzymatically active forms. This process culminates in generation serine protease thrombin and polymerization fibrin prevent leak at sites endothelial cell injury or loss cellular junctions. Thrombin can be initiated by extrinsic pathway through ex...

Activation of coagulation induces a proinflammatory response in in vitro and animal experiments. Inhibition of the tissue factor-dependent pathway of coagulation inhibits cytokine release and prevents death in gram-negative sepsis models in primates. This study investigated the influence of blocking the coagulation system by tissue factor pathway inhibitor (TFPI) on endotoxin-induced inflammato...