{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,2,21]],"date-time":"2025-02-21T22:50:56Z","timestamp":1740178256309,"version":"3.37.3"},"reference-count":15,"publisher":"American Society of Hematology","issue":"17","content-domain":{"domain":["ashpublications.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2020,9,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The von Willebrand factor ristocetin cofactor activity assay (VWF:RCo) is used for diagnosis of von Willebrand disease (VWD) because of its ability to evaluate VWF binding to platelets. VWF sequence variant p.D1472H is associated with lower VWF:RCo levels in the absence of associated bleeding symptoms, indicating the VWF:RCo may not be accurate for characterizing VWF function in individuals with this variant. Thus, this study aimed to determine the implications of the variant on VWF functioning in vivo. Mice were engineered with humanized wild-type (WT*) VWF A1\/A2 and VWF with the p.D1472H (1472H) variant along with humanized platelet GPIb\u03b1 and bred to homozygosity. VWF antigen and VWF binding to GPIb\u03b1 were measured using enzyme-linked immunosorbent assay. Gel electrophoresis was used for VWF multimer analysis. Tail bleeding assays were performed at a 3-mm defined length. Normal VWF multimers were preserved in both WT* and 1472H mice. VWF expression was normal in the WT* and 1472H mice, and VWF binding to GPIb\u03b1 did not statistically differ between the groups. Additionally, tail bleeding times were similar for WT* and 1472H mice. These results show the p.D1472H variant does not impair hemostasis in mice, and support the conclusion that p.D1472H is a normal variant in humans.<\/jats:p>","DOI":"10.1182\/bloodadvances.2020002629","type":"journal-article","created":{"date-parts":[[2020,8,31]],"date-time":"2020-08-31T18:13:09Z","timestamp":1598897589000},"page":"4065-4068","update-policy":"https:\/\/doi.org\/10.1182\/blood.2019cm0000","source":"Crossref","is-referenced-by-count":3,"title":["von Willebrand factor variant D1472H has no effect in mice with humanized VWF-platelet interactions"],"prefix":"10.1182","volume":"4","author":[{"given":"Hannah K.","family":"Lohmeier","sequence":"first","affiliation":[{"name":"Division of Hematology\/Oncology, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tricia L.","family":"Slobodianuk","sequence":"additional","affiliation":[{"name":"Versiti Blood Research Institute, Milwaukee, WI;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sachiko","family":"Kanaji","sequence":"additional","affiliation":[{"name":"Scripps Research Institute, La Jolla, CA; and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sandra L.","family":"Haberichter","sequence":"additional","affiliation":[{"name":"Division of Hematology\/Oncology, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI;"},{"name":"Versiti Blood Research Institute, Milwaukee, WI;"},{"name":"Children\u2019s Research Institute, Children\u2019s Hospital of Wisconsin, Milwaukee, WI"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Robert R.","family":"Montgomery","sequence":"additional","affiliation":[{"name":"Division of Hematology\/Oncology, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI;"},{"name":"Versiti Blood Research Institute, Milwaukee, WI;"},{"name":"Children\u2019s Research Institute, Children\u2019s Hospital of Wisconsin, 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