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  • Title: Human platelet thrombin receptors. Roles in platelet activation.
    Author: Ofosu FA, Nyarko KA.
    Journal: Hematol Oncol Clin North Am; 2000 Oct; 14(5):1185-98, x. PubMed ID: 11005041.
    Abstract:
    Platelets are essential participants in hemostasis and thrombosis. Platelets normally circulate in blood as discoid resting cells that become critical constituents of hemostatic plugs or arterial thrombi only after specific receptors on platelet membranes interact with their ligands (agonists) to initiate the reactions that lead to platelet activation. The well-characterized events associated with platelet activation include activation of membrane receptors, shape change, granular secretion, cytoskeletal reassembly, platelet cohesion, and aggregation. The plasma protease alpha-thrombin is the most potent physiologic platelet agonist; this enzyme has other key roles in hemostasis, in the genesis of arterial thrombi, and in embryonic development, inflammation, wound healing, and cell proliferation.
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