Recent study of 400 human cases, including 240 with diverse hemorrhagic disorders, has accumulated noteworthy experience with a wide variety of test methods for quantitating the collective and individual factors in the blood clotting and hemostatic mechanisms. Important among these tests are those dealing with prothrombin and its conversion to thrombin for the enzymatic polymerization of fibrin...

Lopap, found in the bristles of Lonomia obliqua caterpillar, is the first exogenous prothrombin activator that shows serine protease-like activity, independent of prothrombinase components and unique lipocalin reported to interfere with hemostasis mechanisms. To assess the action of an exogenous prothrombin activator reversing the anticoagulant and antihemostatic effect induced by low molecular...

Background & Aim: Traumatic brain injury is one of the main causes of death and disability. The aim of this study is to systematically review the articles which assessed some serum factors of traumatic brain injury patients in relation to their outcomes. Methods & Materials/Patients: Databases were searched for relevant publications from 2005 to 2014. Selection criteria were:Studies which ev...

The 25,000 Af, fragment obtained by thrombin digestion of normal prothrombin has been further compared with the corresponding fragment from dicoumarol-induced prothrombin. In contrast with the fragment from normal prothrombin, the one from dicoumarol-induced prothrombin does not bind calcium (STENFLO, J. (1973) /. Biol. Chem. 248, 6325). After cyanogen bromide degradation of this material, a fr...

Dear Madam, The P.T. assay, first described in 1935 by Quick et al. soon became the monitoring of oral anticoagulant therapy. The P.T. measures the affect of reduction in the Vit. K dependent coagulant factors II, VII and X. Because the Prothrombin Time Ratio (P.T.R.) is markedly affected by the activity of thromboplastin, the W. It helps to determine the intensity of anti-coagulation therapy b...

A patient developed bleeding due to an acute acquired specific prothrombin deficiency. Unlike previously described patients, this patient had no evidence of an associated lupus anticoagulant. Prothrombin activity and antigen were decreased concordantly and the patient's plasma did not neutralize the activity of added prothrombin or interfere with its measurement by electroimmunoassay. Neverthel...

Liver function and its correlation with bilirubin and hepatic enzymes were evaluated in 30 male chronic asymptomatic or oligosymptomatic alcoholics admitted into the psychiatric hospital for detoxification and treatment of alcoholism. Hypoalbuminemia, lowered prothrombin activity, hypotransferrinemia and hypofibrinogenemia were detected in 32%, 32%, 28%, and 24% of patients, respectively. Trans...

Normal, healthy, free-living adults ingested either 18 g/d olestra, with or without 1.1 mg tocopheryl acetate/ g olestra, or 18 g/d triglyceride placebo, for 16 wk in a double-blind, placebo-controlled study. Serum concentrations of a-tocopherol, a-carotene, b-carotene, lycopene, lutein/zeaxanthin, retinol and cholesterol were measured biweekly. Serum 25-hydroxyvitamin D concentration, prothrom...

BACKGROUND In patients with cirrhosis, the synthesis of coagulation factors can fall short, reflected by a prolonged prothrombin time. Although anticoagulants factors are decreased as well, blood loss during orthotopic liver transplantation can still be excessive. Blood loss during orthotopic liver transplantation is currently managed by transfusion of red blood cell concentrates, platelet conc...