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  • Title: Profile of blood coagulation and fibrinolysis in chronic myeloproliferative disorders.
    Author: Takahashi H, Hattori A, Shibata A.
    Journal: Tohoku J Exp Med; 1982 Sep; 138(1):71-80. PubMed ID: 6959382.
    Abstract:
    Blood coagulation and fibrinolysis were studied in 65 patients with chronic myeloproliferative disorders (MPD). They consisted of 28 patients with chronic granulocytic leukemia (CGL) in chronic phase, 7 with CGL in blast crisis, 9 with polycythemia vera (PV), 13 with primary thrombocythemia (PTh) and 8 with primary myelofibrosis (MF). Hemorrhagic and thrombotic complications were observed in 19 and 8 patients, respectively. Activated partial thromboplastin time and prothrombin time were prolonged in many patients. Low factor II levels were observed in some CGL patients. Factor V was decreased in CGL patients in chronic phase and in PV patients. Fibrinogen was either normal or increased in most patients, but an elevation of fibrin/fibrinogen degradation products (FDP) was found in some patients. The VIIIR: Ag/VIII:C ratio was increased in CGL patients in blast crisis, in PV patients and in PTh patients. Antithrombin III and plasminogen were below normal in some patients. Most patients showed a decrease in alpha 2-plasmin inhibitor. These findings suggest that blood coagulation and fibrinolysis are involved in the pathogenesis of the thrombotic and hemorrhagic complications in these patients. Chronic low-grade intravascular coagulation might be present in some patients with MPD.
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