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  • Title: Activation of coagulation and fibrinolytic systems following stroke.
    Author: Lane DA, Wolff S, Ireland H, Gawel M, Foadi M.
    Journal: Br J Haematol; 1983 Apr; 53(4):655-8. PubMed ID: 6219694.
    Abstract:
    When the human blood coagulation and fibrinolytic systems are activated thrombin cleaves fibrinopeptide A (FPA) and plasmin cleaves b beta1 leads to 42 from fibrin(ogen). Elevated plasma concentrations of FPA and B beta 1 leads to 42 are evidence for enhanced thrombin and plasma activities in plasma. We have determined the plasma concentrations of FPA and B beta 1 leads to 42 in patients who have had thrombotic stroke. Patients who were studied immediately following stroke were found to have greatly elevated plasma FPA and B beta 1 leads to 42 levels, but these decreased to the concentrations found in an apparently healthy age-matched control group 1 month after the infarct. In contrast, the plasma concentrations of the platelet release product beta-thromboglobulin (beta TG) were slightly, but significantly, elevated immediately following the stroke and these did not alter with time after the infarct. It is concluded that following thrombotic stroke increased thrombin and plasmin activities are to be found in plasma. These increased protease activities are probably not directly associated with an increased in vivo platelet release reaction and may be useful in deciding which patients are at risk of reinfarction or stroke progression.
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