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Our objective was to develop a rapid and precise flow cytometric immunobead array (<jats:styled-content style=\"fixed-case\">FCIA<\/jats:styled-content>) to quantify <jats:styled-content style=\"fixed-case\">VWF<\/jats:styled-content> antigen (<jats:styled-content style=\"fixed-case\">VWF<\/jats:styled-content>:Ag) and ristocetin\u2010triggered platelet glycoprotein Ib binding (<jats:styled-content style=\"fixed-case\">VWF<\/jats:styled-content>:<jats:styled-content style=\"fixed-case\">GPI<\/jats:styled-content>bR) and apply it in a clinical setting.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Microbeads, coated with monoclonal antibodies for <jats:styled-content style=\"fixed-case\">SZ<\/jats:styled-content>29 or <jats:styled-content style=\"fixed-case\">SZ<\/jats:styled-content>151 IgG, were incubated with diluted plasma. <jats:styled-content style=\"fixed-case\">VWF<\/jats:styled-content>\u2010binding microbeads were detected with <jats:styled-content style=\"fixed-case\">FITC<\/jats:styled-content>\u2010conjugated sheep\u2010anti\u2010human <jats:styled-content style=\"fixed-case\">VWF<\/jats:styled-content> IgG by flow cytometry. Plasma <jats:styled-content style=\"fixed-case\">VWF<\/jats:styled-content>:Ag and <jats:styled-content style=\"fixed-case\">VWF<\/jats:styled-content>:<jats:styled-content style=\"fixed-case\">GPI<\/jats:styled-content>bR levels in normal controls (<jats:styled-content style=\"fixed-case\">CTL<\/jats:styled-content>; n=105), patients with <jats:styled-content style=\"fixed-case\">VWD<\/jats:styled-content> (n=21), and patients with <jats:styled-content style=\"fixed-case\">AMI<\/jats:styled-content> (n=146) were tested by <jats:styled-content style=\"fixed-case\">FCIA<\/jats:styled-content> and <jats:styled-content style=\"fixed-case\">ELISA<\/jats:styled-content> in parallel. <jats:styled-content style=\"fixed-case\">ADAMTS<\/jats:styled-content>13 activity and <jats:styled-content style=\"fixed-case\">VWF<\/jats:styled-content> multimer analyses were also implemented.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Our novel <jats:styled-content style=\"fixed-case\">FCIA<\/jats:styled-content> showed a strong correlation with the <jats:styled-content style=\"fixed-case\">ELISA<\/jats:styled-content> results (<jats:styled-content style=\"fixed-case\">VWF<\/jats:styled-content>:Ag, <jats:italic>r<\/jats:italic>=.855; <jats:styled-content style=\"fixed-case\">VWF<\/jats:styled-content>:<jats:styled-content style=\"fixed-case\">GPI<\/jats:styled-content>bR, <jats:italic>r<\/jats:italic>=.813). The intra\u2010assay coefficient variations (<jats:styled-content style=\"fixed-case\">CV<\/jats:styled-content>s) of <jats:styled-content style=\"fixed-case\">VWF<\/jats:styled-content>:Ag\u2010<jats:styled-content style=\"fixed-case\">FCIA<\/jats:styled-content> and <jats:styled-content style=\"fixed-case\">VWF<\/jats:styled-content>:<jats:styled-content style=\"fixed-case\">GPI<\/jats:styled-content>bR\u2010<jats:styled-content style=\"fixed-case\">FCIA<\/jats:styled-content> were 9.2% and 7.7%, respectively, and the interassay <jats:styled-content style=\"fixed-case\">CV<\/jats:styled-content>s were 12.6% and 13.5%, respectively. Plasma <jats:styled-content style=\"fixed-case\">VWF<\/jats:styled-content>:Ag and <jats:styled-content style=\"fixed-case\">VWF<\/jats:styled-content>:<jats:styled-content style=\"fixed-case\">GPI<\/jats:styled-content>bR levels were significantly higher in patients with <jats:styled-content style=\"fixed-case\">AMI<\/jats:styled-content> than in <jats:styled-content style=\"fixed-case\">CTL<\/jats:styled-content> (<jats:italic>P<\/jats:italic>&lt;.0001), whereas the ratios of <jats:styled-content style=\"fixed-case\">ADAMTS<\/jats:styled-content>13\/<jats:styled-content style=\"fixed-case\">VWF<\/jats:styled-content>:Ag and <jats:styled-content style=\"fixed-case\">ADAMTS<\/jats:styled-content>13\/<jats:styled-content style=\"fixed-case\">VWF<\/jats:styled-content>:<jats:styled-content style=\"fixed-case\">GPI<\/jats:styled-content>bR were significantly lower (<jats:italic>P<\/jats:italic>&lt;.0001). Levels of plasma ultra\u2010large <jats:styled-content style=\"fixed-case\">VWF<\/jats:styled-content> (<jats:styled-content style=\"fixed-case\">UL<\/jats:styled-content>\u2010<jats:styled-content style=\"fixed-case\">VWF<\/jats:styled-content>) were dramatically increased in patients with <jats:styled-content style=\"fixed-case\">AMI<\/jats:styled-content>.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The novel <jats:styled-content style=\"fixed-case\">VWF<\/jats:styled-content>:Ag and <jats:styled-content style=\"fixed-case\">VWF<\/jats:styled-content>:<jats:styled-content style=\"fixed-case\">GPI<\/jats:styled-content>bR\u2010<jats:styled-content style=\"fixed-case\">FCIA<\/jats:styled-content> assays were found to be simpler, more specific, and more accurate than the classical <jats:styled-content style=\"fixed-case\">ELISA<\/jats:styled-content> method. In addition, elevated <jats:styled-content style=\"fixed-case\">VWF<\/jats:styled-content>:<jats:styled-content style=\"fixed-case\">GPI<\/jats:styled-content>bR and <jats:styled-content style=\"fixed-case\">UL<\/jats:styled-content>\u2010<jats:styled-content style=\"fixed-case\">VWF<\/jats:styled-content> may contribute to the pathogenesis of <jats:styled-content style=\"fixed-case\">AMI<\/jats:styled-content>.<\/jats:p><\/jats:sec>","DOI":"10.1111\/ejh.12905","type":"journal-article","created":{"date-parts":[[2017,5,19]],"date-time":"2017-05-19T04:26:40Z","timestamp":1495168000000},"page":"207-215","source":"Crossref","is-referenced-by-count":5,"title":["Development of a novel flow cytometric immunobead array to quantify VWF: Ag and VWF: GPIbR and its application in acute myocardial infarction"],"prefix":"10.1111","volume":"99","author":[{"given":"Bin","family":"Yan","sequence":"first","affiliation":[{"name":"Jiangsu Institute of Hematology Key Laboratory of Thrombosis and Hemostasis 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