Polyphosphate modulates blood coagulation and fibrinolysis

Polyphosphate modulates blood coagulation and fibrinolysis.

Inorganic polyphosphate is an abundant component of acidocalcisomes of bacteria and unicellular eukaryotes. Human platelet dense granules strongly resemble acidocalcisomes, and we recently showed that they contain substantial amounts of polyphosphate, which is secreted upon platelet activation. We now report that polyphosphate is a potent hemostatic regulator, accelerating blood clotting by act...

Blood coagulation, fibrinolysis and exercise.

Blood Coagulation, Fibrinolysis and Cellular Haemostasis Introduction

A high plasma concentration of coagulation factor VIII (FVIII) is an important risk factor for venous thromboembolism (VTE) (1-4). In the Leiden Thrombophilia study for example, FVIII levels above 1500 IU/L conferred an almost 5-fold risk for a first episode of deep-vein thrombosis (1). Most importantly, high FVIII is also associated with a very high risk of recurrent venous thromboembolism (4,...

Fibrinolysis and the control of blood coagulation.

Fibrin plays an essential role in hemostasis as both the primary product of the coagulation cascade and the ultimate substrate for fibrinolysis. Fibrinolysis efficiency is greatly influenced by clot structure, fibrinogen isoforms and polymorphisms, the rate of thrombin generation, the reactivity of thrombus-associated cells such as platelets, and the overall biochemical environment. Regulation ...

Plasma lipids, blood coagulation and fibrinolysis in peripheral arterial disease.

In a study relating platelet stickiness, plasma fibrinogen and fibrinolysis to fasting plasma lipids in patients with atherosclerosis of the lower limbs, a significant correlation has been observed between platelet stickiness and plasma phospholipid levels. The possible mechanisms are discussed. No other correlation is observed. Fasting levels of plasma fibrinogen were raised, while levels of p...