Assembly and Activation of Alternative Complement Components on Endothelial Cell-Anchored Ultra-Large Von Willebrand Factor Links Complement and Hemostasis-Thrombosis
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Assembly and Activation of Alternative Complement Components on Endothelial Cell-Anchored Ultra-Large Von Willebrand Factor Links Complement and Hemostasis-Thrombosis
BACKGROUND Vascular endothelial cells (ECs) express and release protein components of the complement pathways, as well as secreting and anchoring ultra-large von Willebrand factor (ULVWF) multimers in long string-like structures that initiate platelet adhesion during hemostasis and thrombosis. The alternative complement pathway (AP) is an important non-antibody-requiring host defense system. Th...
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Use of animal models of inherited and induced von Willebrand factor (VWF) deficiency continues to advance the knowledge of VWF-related diseases: von Willebrand disease (VWD), thrombotic thrombocytopenic purpura (TTP), and coronary artery thrombosis. First, in humans, pigs, and dogs, VWF is essential for normal hemostasis; without VWF bleeding events are severe and can be fatal. Second, the ADAM...
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Type Vicenza variant of von Willebrand disease (VWD) is characterized by a low plasma von Willebrand factor (VWF) level and supranormal VWF multimers. Two candidate mutations, G2470A and G3864A at exons 17 and 27, respectively, of the VWF gene were recently reported to be present in this disorder. Four additional families, originating from northeast Italy, with both mutations of type Vicenza VW...
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OBJECTIVE Ultralarge von Willebrand factor (vWF) strings are secreted by, and anchored to, stimulated human endothelial cells. A disintegrin and metalloprotease with thrombospondin domains-type 13 cleaves the ultralarge vWF strings into large soluble vWF multimers. Normal plasma contains a nonproteolytic reducing activity that subsequently rapidly diminishes the size of the large soluble vWF mu...
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ژورنال
عنوان ژورنال: PLoS ONE
سال: 2013
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0059372