Thromb Haemost 1987; 58(04): 1060-1063
DOI: 10.1055/s-0038-1646056
Original Article
Schattauer GmbH Stuttgart

Shortening of Bleeding Time by 1-Deamino-8-Arginine Vasopressin (DDAVP) in the Absence of Platelet von Willebrand Factor in Gray Platelet Syndrome

Sharron L Pfueller
The Department of Medicine, Monash University Medical School, Alfred Hospital, Victoria, Australia
,
Margaret A Howard
The Department of Medicine, Monash University Medical School, Alfred Hospital, Victoria, Australia
,
James G White
1   The Department of Laboratory Medicine and Pathology, University of Minnesota Health Sciences Center, Minneapolis, Minnesota
,
Chandrasekhara Menon
2   The Haematology Department, Auckland Hospital, Auckland, New Zealand
,
Elizabeth W Berry
2   The Haematology Department, Auckland Hospital, Auckland, New Zealand
› Author Affiliations
Further Information

Publication History

Received 28 April 1987

Accepted after revision 07 September 1987

Publication Date:
29 June 2018 (online)

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Summary

The Gray platelet syndrome is a rare disorder characterised by the absence of platelet a-granules and their contents. We describe a new patient and the effects of infusions of l-deainino-8-aiginine vasopressin (DDAVP). The patient had a prolonged skin bleeding time and his platelets had reduced numbers of a-granules, increased vacuolation and reduced retention on glass beads. Flatelet von Willebrand factor antigen (vWf:Ag) was undetectable and levels of platelet fibrinogen, p-thioniboglobulin, platelet factor 4 and thrombospondin were reduced. All tests of plasma coagulation factors were normal, including Factor VIII (F. VIII: C), vWf: Ag, ristocetin cofactor (R: CoF) and botrocetin cofactor. Platelet ATP, ADP, platelet albumin, surface membrane glycoproteins and 14C-serotonin uptake were also normal. Infusions of DDAVP increased plasma F.VIII:C, vWf:Ag and R.CoF and sliuitened the bleeding time un two occasions. This suggests that DDAVP shortens the bleeding time by releasing vWf: Ag and/or other proteins from cellular storage sites other than the platelet.