Dynamics of platelet glycoprotein IIb-IIIa receptor expression and fibrinogen binding. II. Quantal activation parallels platelet capture in stir-associated microaggregation
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چکیده
منابع مشابه
Platelet Glycoprotein IIb/IIIa Inhibitors
Glycoprotein IIb/IIIa (GPIIb-IIIa) complexes (integrin aIIbb3) mediate platelet aggregation by binding fibrinogen or von Willebrand factor (vWF), protein cofactors that form bridges between adjacent platelets. The cross-linked adhesive proteins assemble platelets into the aggregate. Agents that block the function of the GPIIb-IIIa complex of platelets constitute a powerful new generation of ant...
متن کاملPlatelet glycoprotein IIb/IIIa inhibitors.
To the Editor: Platelet glycoprotein (GP) IIb/IIIa antagonists only prompt an overall 8.5% relative reduction in 30-day deaths or myocardial infarction in acute coronary syndromes (ACS),1 and Quinn et al1 suggested that this limited benefit may be due to factors such as antagonist-induced platelet activation. I suggest that limited benefits of GP IIb/IIIa inhibition are due basically to limited...
متن کاملPlatelet glycoprotein IIb/IIIa receptor blockade in coronary artery disease
New strategies for profound inhibition of platelet activity at the injured coronary plaque focus on blockade of the platelet surface membrane glycoprotein IIb/IIIa receptor, which binds circulating fibrinogen or von Willebrand factor and crosslinks platelets as the final common pathway to platelet aggregation. Intravenous agents directed against this receptor include the chimeric monoclonal ant...
متن کاملInhibition of Human Platelet Glycoprotein IIB/IIIA Binding to Fibrinogen by Tumor Cell Membrane Proteins I
Immunochemical and functional characteristics of tumor cell membrane proteins and human platelet glycoproteins were studied. Immunoblotting revealed that membrane proteins of a cultured breast tumor cell line (BT-20) had three protein bands, which were each recognized by monoclonal antibodies to human platelet glycoprotein Ib, IIb, and IIIa, suggesting some immunochemical similarities between t...
متن کاملPlatelet glycoprotein IIb/IIIa receptor antagonists in cardiovascular disease.
CONTEXT Thrombus formation on disrupted atherosclerotic plaque is the major cause of acute coronary events. Platelet inhibitors are the mainstay of drug therapy to reduce cardiac events in patients with acute coronary syndromes. The platelet glycoprotein (GP) IIb/IIIa receptor is the final common pathway of platelet aggregation. OBJECTIVES To review mechanisms of platelet activation and aggre...
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ژورنال
عنوان ژورنال: Biophysical Journal
سال: 1994
ISSN: 0006-3495
DOI: 10.1016/s0006-3495(94)80690-3