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  • Title: The action of Echis carinatus venom on the blood coagulation system. Demonstration of an activator of factor X.
    Author: Hemker HC, van Dam-Mieras MC, Devilée PP.
    Journal: Thromb Res; 1984 Jul 01; 35(1):1-9. PubMed ID: 6474406.
    Abstract:
    It is shown that Echis carinatus venom activates both coagulation factor II and coagulation factor X. The activation of both proenzymes by the venom is Ca++-dependent; phospholipids are not necessary. The activation of factor II by the venom is a slow process and, in the absence of factor X, the clotting activity towards fibrinogen is generated only very slowly. Because Echis carinatus venom clots plasma readily, we postulate that under conditions where the prothrombinase complex can be formed from the factor X activated by the venom it is this complex, rather than the venom itself, that is responsible for the major part of the thrombin formation.
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