Measurement of von Willebrand factor activity: relative effects of ABO blood type and race
نویسندگان
چکیده
منابع مشابه
Measurement of Von Willebrand Factor Antigen Levels in a Nigerian Population: Relative Effects of ABO Blood Group, Age, Gender and Ethnic Differences
Several studies have shown that von Willebrand Factor Antigen (vWF: Ag) levels are influenced by some factors such as ABO blood group, age, gender and ethnic differences, however, similar reports in our environment are non-existent. Therefore the objective of this study was to determine the relationships between the plasma vWF: Ag levels and these factors among apparently healthy Nigerian subje...
متن کاملABO blood group antigens on human plasma von Willebrand factor after ABO-mismatched bone marrow transplantation.
von Willebrand factor (vWF) is synthesized exclusively by endothelial cells and megakaryocytes, and stored in the intracellular granules or constitutively secreted into plasma. ABO blood group antigens are covalently associated with asparagine-linked sugar chains of plasma vWF. The effect of ABO-mismatched bone marrow transplantation (BMT) or blood stem cell transplantation (BSCT) on the expres...
متن کاملABO blood group and von Willebrand factor levels partially explained the incomplete penetrance of congenital thrombophilia.
OBJECTIVE We aimed to study the association among ABO blood group, von Willebrand factor, factor VIII plasma levels, and the risk of venous thrombosis (VT) in a cohort of 1774 relatives from 500 families with inherited thrombophilia. METHODS AND RESULTS One hundred sixty-one of the 1774 relatives had a VT. Different risk groups were formed: no, low-(factor V Leiden or F2G20210A heterozygous c...
متن کاملRelationship between ABO blood group and von Willebrand factor levels: from biology to clinical implications
Although a number of studies have demonstrated the influence of ABO blood group on plasma levels of von Willebrand factor (VWF), the nature of this association and its clinical importance is still largely unknown.In this review, the most recent advances in our understanding of the mechanisms by which ABO blood group determines plasma VWF levels and their clinical impact will be discussed.
متن کاملFactor VIII/von Willebrand factor protein. Galactose a cryptic determinant of von Willebrand factor activity.
The normal Factor VIII/von Willebrand factor protein has the ability to agglutinate or aggregate normal platelets in the presence of ristocetin (von Willebrand factor activity). Removal of greater than 95% of the sialic acid from this protein by neuraminidase did not affect the von Willebrand factor or procoagulant activity. However, oxidation of the penultimate galactose of the asialo Factor V...
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ژورنال
عنوان ژورنال: Journal of Thrombosis and Haemostasis
سال: 2003
ISSN: 1538-7933,1538-7836
DOI: 10.1046/j.1538-7836.2003.00367.x