The heptapeptide LSARLAF mediates platelet activation through phospholipase Cgamma2 independently of glycoprotein IIb-IIIa
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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 کاملThe platelet membrane glycoprotein IIb-IIIa complex.
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متن کاملCalcium regulation of the platelet membrane glycoprotein IIb-IIIa complex.
Platelet membrane glycoproteins (GP) IIb and IIIa form a Ca2+-dependent, heterodimer complex (GP IIb-IIIa) in detergent solution. To determine whether these glycoproteins were complexed or dissociated in intact human platelets, 125I-labeled whole platelets were lysed with an EDTA/Triton X-100 buffer, which stabilized both the complexed and dissociated forms of GP IIb and GP IIIa. The percentage...
متن کاملEffect of platelet activation on the conformation of the plasma membrane glycoprotein IIb-IIIa complex.
Platelet activation converts the membrane GP IIb-IIIa complex into a functional receptor for fibrinogen, but the mechanism is poorly understood. We asked whether induction of receptor competency coincides with a conformational change affecting the spatial arrangement of exoplasmic domains of the IIb and IIIa subunits. Epitopes on these subunits were labeled with monoclonal antibodies conjugated...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 2004
ISSN: 0264-6021,1470-8728
DOI: 10.1042/bj20031298