High-Molecular-Weight von Willebrand Factor Multimer Ratio
نویسندگان
چکیده
منابع مشابه
Control of Von Willebrand Factor Multimer Size by Thrombospondin-1
Plasma von Willebrand factor (vWF) is a multimeric protein that mediates adhesion of platelets to sites of vascular injury. Only the very large vWF multimers are effective in promoting platelet adhesion in flowing blood. A protein disulfide bond reductase in plasma reduces the average multimer size of vWF secreted by endothelial cells. This activity has been isolated from human endothelial cell...
متن کاملType IIB von Willebrand's disease: differential clearance of endogenous versus transfused large multimer von willebrand factor.
The abnormal multimeric composition of plasma von Willebrand factor in type IIB von Willebrand's disease is transiently corrected after infusion of 1-deamino-[8-D-arginine]-vasopressin. However, the larger multimers released into the circulation disappear more rapidly in these patients than in type I von Willebrand's disease or normals. We demonstrate that the larger multimers of normal von Wil...
متن کاملElevated platelet count as a cause of abnormal von Willebrand factor multimer distribution in plasma.
Twelve of 19 patients with myeloproliferative disorders showed a decrease of absence of the largest multimers of plasma von Willebrand factor (vWF) that correlated with elevated platelet counts but not with leukocyte counts. This suggested that platelets, rather than leukocytes, may be associated with the pathogenesis of the acquired vWF abnormality seen in these patients. To examine the hypoth...
متن کاملMultimer size dependence of von Willebrand factor binding to crosslinked or noncrosslinked fibrin.
von Willebrand factor (vWF) is synthesized in endothelial cells (EC) and may be either secreted constitutively or stored in Weibel-Palade bodies (WPB) for regulated release. Because fibrin stimulates rapid vWF release from EC, we examined the binding of EC synthesized vWF to fibrin. Culture medium containing constitutively secreted vWF was removed from metabolically labeled primary cultures of ...
متن کاملComparison of two dimensional immunoelectrophoresis and multimer analysis in the study of von Willebrand factor.
To assess the validity of the multimeric analysis of von Willebrand factor (vWf), this technique was compared with two dimensional immunoelectrophoresis using samples of purified vWf obtained by gel filtration and plasma samples from a patient with severe von Willebrands disease who was receiving prophylaxis with cryoprecipitate. It is concluded that except for specialised clinical and research...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 2018
ISSN: 0735-1097
DOI: 10.1016/j.jacc.2018.05.080