Thromb Haemost 1973; 30(02): 315-326
DOI: 10.1055/s-0038-1649080
Original Article
Schattauer GmbH

The Effect of Barbituric Acid Derivatives on Platelet Function in Vitro and in Vivo[*]

J. Heinz Joist
1   Department of Pathology, McMaster University, Hamilton, Ontario, Canada
2   Department of Biochemistry, University of Toronto, Toronto, Ontario, Canada
,
Jean-Pierre Cazenave
1   Department of Pathology, McMaster University, Hamilton, Ontario, Canada
2   Department of Biochemistry, University of Toronto, Toronto, Ontario, Canada
,
J. Fraser Mustard
1   Department of Pathology, McMaster University, Hamilton, Ontario, Canada
2   Department of Biochemistry, University of Toronto, Toronto, Ontario, Canada
› Author Affiliations
Further Information

Publication History

Received for publication 13 April 1973

Accepted for publication 16 July 1973

Publication Date:
30 June 2018 (online)

Summary

Sodium pentobarbital (SPB) and three other barbituric acid derivatives were found to inhibit platelet function in vitro. SPB had no effect on the primary response to ADP of platelets in platelet-rich plasma (PRP) or washed platelets but inhibited secondary aggregation induced by ADP in human PRP. The drug inhibited both phases of aggregation induced by epinephrine. SPB suppressed aggregation and the release reaction induced by collagen or low concentrations of thrombin, and platelet adherence to collagen-coated glass tubes. The inhibition by SPB of platelet aggregation was readily reversible and isotopically labeled SPB did not become firmly bound to platelets. No inhibitory effect on platelet aggregation induced by ADP, collagen, or thrombin could be detected in PRP obtained from rabbits after induction of SPB-anesthesia.

* Presented in part at the II. Congress of the International Society on Thrombosis and Hemostasis, Oslo, Norway, August, 1971.


 
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