Thromb Haemost 1990; 63(02): 279-281
DOI: 10.1055/s-0038-1645209
Original Article
Schattauer GmbH Stuttgart

Expression of the Drug-Dependent Antigen for Quinine-Dependent Antiplatelet Antibodies on GP III a but not that on GPI b, II b or IX on Human Endothelial Cells

Authors

  • Sharron L Pfueller

    The Department of Medicine, Monash University Medical School, Alfred Hospital, Prahran, Victoria, Australia
  • Robyn A Bilston

    The Department of Medicine, Monash University Medical School, Alfred Hospital, Prahran, Victoria, Australia
  • Stephen Jane

    The Department of Medicine, Monash University Medical School, Alfred Hospital, Prahran, Victoria, Australia
  • Jannine Gibson

    The Department of Medicine, Monash University Medical School, Alfred Hospital, Prahran, Victoria, Australia
Further Information

Publication History

Received 08 September 1989

Accepted after revision 24 November 1989

Publication Date:
02 July 2018 (online)

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Summary

In quinine- and quinidine-induced thrombocytopenic purpura IgG antibodies are known to react in a drug-dependent manner with different combinations of surface glycoproteins (GP) Ib , IIb, IIIa and IX. Because endothelial cells share a number of properties of platelets, including the presence of GP Ilia and GPIb-like proteins, we have compared these two cell types for their quinine-dependent IgG binding abilities. By immunoblotting of endothelial cells, quinine-dependent IgG binding from four patient sera was observed only to a 93 kDa component corresponding to GP Ilia. Strong IgG binding independent of the drug was found at 170–180 kDa. Thus endothelial cells express the GP Ilia quinine-dependent epitope on platelet GP IIIa , but not those on other platelet glycoproteins.