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The effect of DDAVP on plasma levels of von Willebrand antigen II in normal
individuals and patients with von Willebrand's disease
DR McCarroll, ZM Ruggeri and RR Montgomery
The infusion of 1-deamino-(8-D-arginine)-vasopressin (DDAVP) causes not
only an elevation in factor VIII-related antigen (FVIIIR:Ag), but also a
marked elevation of plasma von Willebrand antigen II (vWAgII). vWAgII
reaches a peak concentration at 60 min and is elevated 3-8-fold over basal
levels in normal individuals and individuals with type I, IIA, and IIB von
Willebrand's disease. As the mechanism of hemostatic alteration brought
about by DDAVP might be due to release of endothelial cell proteins,
endothelial cell cultures were performed. The cultures demonstrated
synthesis and secretion of vWAgII, as evidenced by the incorporation of
35S-methionine into the vWAgII molecule. Thus, vWAgII, like FVIIIR:Ag, is
an endothelial cell protein.
Volume 63,
Issue 3,
pp. 532-535,
03/01/1984
Copyright © 1984 by The American Society of Hematology

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