[Influence of prothrombin cleavage products on platelet activation and aggregation].

Meizothrombin efficiently activates mechanically triggered platelets and enhance collagen-, ADP- and adrenalin-induced aggregation of platelet-rich blood plasma. Thus, in clotting system activation zone meizothrombin is able to enhance process of involving platelets in clotformation. Pre-thrombin 1 inhibits collagen-, ADP- and adrenalin-induced aggregation of platelet-rich blood plasma and so regulates not only plasm but platelet hemostasis by reverse negative relation.