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Thromb Haemost 1998; 80(03): 495-498
DOI: 10.1055/s-0037-1615235
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Quantitative Analysis of von Willebrand Factor and Its Propeptide in Plasma in Acquired von Willebrand Syndrome

Perry J. J. van Genderen
1   From the Department of Hematology, University Hospital Dijkzigt, Rotterdam, Central Laboratory of the Netherlands Red Cross Blood Transfusion Service, Amsterdam, The Netherlands
,
Ria C. Boertjes
1   From the Department of Hematology, University Hospital Dijkzigt, Rotterdam, Central Laboratory of the Netherlands Red Cross Blood Transfusion Service, Amsterdam, The Netherlands
,
Jan A. van Mourik
1   From the Department of Hematology, University Hospital Dijkzigt, Rotterdam, Central Laboratory of the Netherlands Red Cross Blood Transfusion Service, Amsterdam, The Netherlands
› Author AffiliationsSupported in part by the Dutch Thrombosis Foundation
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Publication History

Received 17 September 1997

Accepted after resubmission 07 May 1998

Publication Date:
08 December 2017 (online)

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Summary

Measurement of the von Willebrand factor (vWF) propeptide, also known as von Willebrand antigen II, has been suggested to be helpful in the discrimination of congenital von Willebrand disease type I from type 2 and in assessing the extent of activation of the endothelium. We performed a quantitative analysis of mature vWF and its propeptide in plasma in 8 patients with acquired von Willebrand syndrome (AvWS) and in 20 normal individuals. Mature vWF levels were significantly lower in AvWS as compared with normal individuals (13.4 ± 3.5 vs 35.6 ± 3.3 nM, p <0.001). In contrast, propeptide levels were significantly higher in AvWS (11.4 ± 1.1 vs 4.7 ± 0.2 nM, p < 0.001), probably reflecting a compensatory increase in vWF synthesis or increased perturbation of the endothelium in AvWS. After treatment with DDAVP, propeptide and mature vWF levels rose 5-fold in AvWS, whereas propeptide levels were not altered by the infusion of a vWF concentrate or treatment with high dose intravenous immunoglobulins, indicating that plasma propeptide levels are a reliable reflection of vWF synthesis. Measurement of propeptide levels may provide additional information in AvWS as to whether decreased levels of mature vWF in the circulation are due to a decrease in synthesis or due to an accelerated removal of vWF from the circulation.

 

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