MAPA (Membrane-associated Prothrombin Activator)

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Characterization of an inducible endothelial cell prothrombin activator.

In vivo prothrombin activation is thought to occur via a factor Xa/factor V-dependent mechanism. We investigated whether human venous endothelial cells (EC) could be induced to express a prothrombin activator. EC treated with lipopolysaccharide (LPS) or interleukin-1 activated prothrombin in the absence of exogenous factors Xa and V. This activity resided in the membrane fraction of EC and was ...

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