Effect of oral contraceptives on factor VIII clotting activity and factor VIII related antigen in normal women.

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Effect of oral contraceptives on factor VIII clotting activity and factor VIII related antigen in normal women.

The factor VIII clotting activity (VIIIc1 and factor VIII related antigen (VIIIRAg) were determined repeatedly in 24 pairs of age-matched normal women, one of each pair being on oral contraceptives. No significant differences in either parameter or in the VIIIc/VIIIRAg ration were found between the two groups ,although the mean factor VIII clotting activity and VIIIc/VIIIRAg ratios for women on...

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FACTOR V AND VIII INHIBITOR IN PATIENTS WITH COMBINED FACTOR V AND VIII DEFICIENCY

Patients with coagulation factor(s) deficiency who use coagulation therapy are susceptible to forming inhibitors against coagulation factor(s). In this survey we detected factor V and VIII inhibitor in ten patients with combined deficiency of factors V and VIII from north east of Iran (Khorassan province). It was revealed in our survey that eight patients had both factor V and factor VIII i...

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effect of oral contraceptives (ld and cilest) on clotting factors viii and ix

based on epidemiologic data, women who take oral contraceptives seem to have an increased risk of developing thromboembollic disease. the thrombotic effects of oral contraceptive (oc) are probably mediated, at least partly through their effects on the coagulation system. plasma levels of several clotting factors have been shown to be elevated in oc users, and this increase is graduated accordin...

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Factor Viii Coagulant Activity and Factor Viii-like Antigen: Independent Molecular Entities

Factor VIII coagulant activity (VIII(C)) and the von Willebrand's disease antigen (Factor VIII-like antigen, vW-Ag) are biologically linked, and it has been suggested that they reside on the same molecule. However, insolubilized human isoantibody to VIII(C) and rabbit antiserum containing antibodies to VIII(C) and vW-Ag differentially bind and remove these entities from plasma, thus physically ...

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It has been suggested that the basis for the marked discordance in factor VIII parameters in preeclampsia is the result of proteolysis of the factor VIII procoagulant component (VIII:C) owing to activation of the coagulation system. To investigate this further, levels were compared of factor VIII:C and VIII:C (Ag), the immunologic equivalent of the procoagulant activity, in a series of preeclam...

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ژورنال

عنوان ژورنال: Journal of Clinical Pathology

سال: 1975

ISSN: 0021-9746

DOI: 10.1136/jcp.28.6.498