title: Intrinsic activating properties of GP IIb/IIIa blockers.
abstract: Potential intrinsic activating properties are probably the most controversially discussed issues with respect to GP IIb/IIIa blockers, especially since clinical trials with oral GP IIb/IIIa blockers revealed disappointing results. Based on the finding that currently clinically used GP IIb/IIIa blockers are ligand mimetics, experimental data are discussed, demonstrating an intrinsic activating effect of ligand mimetic GP IIb/IIIa blockers that potentially results in fibrinogen binding to alpha(IIb)beta(3) and in platelet aggregation. Furthermore, the inhibitory effect of aspirin on GP IIb/IIIa blocker-induced platelet aggregation is discussed as a clinically relevant finding. Finally, the potential association of GP IIb/IIIa blocker-induced thrombocytopenia with platelet activation is described.
authors.affiliation: Department of Cardiology and Angiology, University of Freiburg, Hugstetter Str. 55, 79106, Freiburg, Germany.
authors.forename: K
authors.initials: K
authors.lastname: Peter
authors.forename: M
authors.initials: M
authors.lastname: Schwarz
authors.forename: T
authors.initials: T
authors.lastname: Nordt
authors.forename: C
authors.initials: C
authors.lastname: Bode
mesh_terms: D000911:Antibodies, Monoclonal / Q000378:metabolism / Q000494:pharmacology / Q000627:therapeutic use; D006801:Humans; D009842:Oligopeptides / Q000378:metabolism / Q000494:pharmacology / Q000627:therapeutic use; D010975:Platelet Aggregation Inhibitors / Q000378:metabolism / Q000494:pharmacology* / Q000627:therapeutic use; D019039:Platelet Glycoprotein GPIIb-IIIa Complex / Q000037:antagonists & inhibitors*; D011485:Protein Binding
chemical_list: D000911:Antibodies, Monoclonal; D009842:Oligopeptides; D010975:Platelet Aggregation Inhibitors; D019039:Platelet Glycoprotein GPIIb-IIIa Complex; C047981:arginyl-glycyl-aspartic acid