Thromb Haemost 2007; 98: 20–23 To browse through old work is a pleasure in the indian summer of a career, not devoid of nostalgia.As the large majority of our early work appeared inThrombosis and Diathesis Haemorrhagica, the present issue is an appropriate occasion to do so and to review old results, holding them against the light of our present day knowledge – and apologising beforehand for th...

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...

We evaluated 37 patients with moderate or severe hemophilia A and six patients with severe factor IX deficiency for clinical or laboratory evidence of immune abnormalities. Patients were assigned to one of four groups according to the type of clotting factor replacement. Twenty patients had received only cryoprecipitate during the two years preceding the evaluation (group I); 11 additional pati...

Alveolar macrophages are cell's important in immune defense and inflammation in the lung, and the coagulation system participates in these reactions. In earlier experiments, it was found that alveolar macrophages contain and produce tissue factor, the extrinsic clotting pathway activator. The present experiments explore possible production by alveolar macrophages of the sequence of the clotting...

Our aim was to establish whether differences in clotting times for recalcified blood and plasma samples might be explained by the use of different blood collection tubes. Samples obtained from different plastic vacuum tubes were recalcified and clotting times determined by free oscillation rheometry. The clotting times for blood collected in Vacutainer (Becton Dickinson, Rutherford, New Jersey,...

Using standard one stage clotting assays the concentrations of factors II, VII, IX and X were determined in 37 patients stabilised on warfarin for between three months and 17 years. Contrary to popular belief, the concentrations were not equally depressed, with factor X the lowest, factor II at intermediate value, factors VII and IX the highest. Some 71% of the variance of the British corrected...

Background & Aims: Based on an experimental trial, we tried to test the effects of opium addiction through different administration routes on inflammatory and Coagulation Factors. Methods: This study was performed on 30 adult male Syrian golden hamsters allocated to one of three groups: control group which received no opiate; the first study group received oral opiate; and another study group r...

Doses of oral anticoagulants in 50 patients on long term treatment were easily and satisfactorily monitored over six months by an automated chromogenic assay of prothrombin (CPA). It is suggested that chromogenic assay of one or more of the vitamin K dependent coagulation factors would provide a readily standardised alternative to those conventional tests which depend on human brain derived rea...

background: thrombophilia is a main predisposition to thrombosis due to a procoagulant state. several point mutations play key roles in blood-clotting disorders, which are grouped under the term thrombophilia. these thrombophilic mutations are methylenetetrahydrofolate reductase (mthfr, c677t, and a1298c), factor v leiden (g1691a), prothrombin gene mutation (factor ii, g20210a), and plasminogen...

Background: Factor VIII administration to hemophilia A patients results in an immune response (inhibitor formation) which significantly complicates the therapy. The present study was performed to determine the prevalence of inhibitor development in hemophilia A patients receiving recombinant factor VIII therapy. Materials and Methods: This was an observational descriptive study. Clotting fac...