Plasma-activated factor VII level in patients positive for lupus anticoagulant
نویسندگان
چکیده
منابع مشابه
Preparation of factor VII concentrate using CNBr-activated
Background: Factor VII concentrates are used in patients with congenital or acquired factor VII deficiency or treatment of hemophilia patients with inhibitors. In this research, immunoaffinity chromatography was used to purify factor VII from prothrombin complex (Prothrombin-Proconvertin-Stuart Factor-Antihemophilic Factor B or PPSB) which contains coagulation factors II, VII, IX and X. The a...
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The activated partial thromboplastin time (APTT) assay is a basic hemostatic assay based on the time it takes for clots to form in plasma samples after the addition of calcium chloride. It is used to screen for various coagulation disorders. Several previous reports have suggested that magnesium (Mg) might contribute to coagulation reactions by binding to specific coagulation proteins. We inves...
متن کاملActivated protein C ratio, plasma tissue factor activity and activated factor VII in Chinese patients with coronary heart disease.
OBJECTIVE There is close relationship between abnormal coagulation system and progression of coronary heart disease (CHD), our purpose is to evaluate the contribution of hematologic factors and some other risk factors to the development of coronary heart disease (CHD) in Chinese population. METHODS 56 patients with CHD at admission and 54 controls were enrolled. Plasma levels of protein C, fr...
متن کاملQuantitation of activated factor VII levels in plasma using a tissue factor mutant selectively deficient in promoting factor VII activation.
Although the majority of factor VII (FVII) circulates in the zymogen form, low levels of activated factor VII (FVIIa) have been postulated to exist in plasma and to serve a priming function for triggering of the clotting cascade. However, direct measurement of plasma FVIIa has not previously been possible. We have quantified plasma FVIIa levels using a novel, highly sensitive assay that is free...
متن کاملLupus anticoagulant: clinical significance in anticardiolipin positive patients with systemic lupus erythematosus.
The significance of anticardiolipin antibodies and the lupus anticoagulant was studied in 58 consecutive patients with systemic lupus erythematosus. On 85 occasions serum IgG and IgM anticardiolipin antibodies were measured by an enzyme linked immunosorbent assay (ELISA), and simultaneous plasma samples tested for lupus anticoagulant activity. The most significant association with clinical even...
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ژورنال
عنوان ژورنال: American Journal of Hematology
سال: 1997
ISSN: 0361-8609,1096-8652
DOI: 10.1002/(sici)1096-8652(199705)55:1<9::aid-ajh2>3.0.co;2-y