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Review : Antibody-mediated thrombosis: relation to the antiphospholipid syndrome

Center for Molecular and Vascular Biology, University of Leuven, Belgium

C. Van Geet

Center for Molecular and Vascular Biology, University of Leuven, Belgium

J. Amout

Center for Molecular and Vascular Biology, University of Leuven, Belgium

Various forms of antibody-mediated thrombosis are presented and the mechanisms involved in their pathogenesis are discussed. Antibody-mediated thrombosis includes heparin-induced thrombo cytopenia and thrombosis, autoantibodies to von Willebrand factor mimicking an antiphospholipid syndrome, thrombosis following injection of the murine monoclonal antibody OKT3, hyperacute and acute xenograft rejection, and varicella-associated antibody against protein S. In several of these entities the pathogenesis of thrombosis is closely related to development of cellular procoagulant activity through tight occupancy of Fc receptors, or through complement activation, or through cell-cell interactions. Integrating the antiphospholipid syndrome into the more general category of antibody-mediated thrombosis may provide some hints as to how we could approach the study of those intriguing patients who have the clinical features of the antiphospholipid syndrome but lack those antibodies that currently characterize it.

Key Words: heparin-induced thrombocytopenia • von Willebrand factor antibody • OKT3 antibody • xenograft rejection • protein S antibody

Lupus, Vol. 7, No. 2 suppl, S63-S66 (1998)
DOI: 10.1177/096120339800700215


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