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An antiplatelet drug (antiaggregant), also known as a platelet agglutination inhibitor or platelet aggregation inhibitor, is a member of a class of pharmaceuticals that decrease platelet aggregation [1] and inhibit thrombus formation.
Glycoprotein IIb/IIIa inhibitors are frequently used during percutaneous coronary intervention (angioplasty with or without intracoronary stent placement). They work by preventing platelet aggregation and thrombus formation. They do so by inhibition of the GpIIb/IIIa receptor on the surface of the platelets.
Aggregation of platelets is highly regulated by cyclic nucleotides. PDE3A is a regulator of this process, and PDE3 inhibitors effectively prevent aggregation of platelets. Cilostazol is approved for treatment of intermittent claudication and is thought to involve inhibition of platelet aggregation and also inhibition of smooth muscle ...
For many years dual treatment with the cyclooxygenase-1 (COX-1) inhibitor aspirin and clopidogrel was routine practice and served as the main antiplatelet agents for the prevention of thrombotic events as they have the capability to powerfully manipulate platelet biology, which plays a central part in thrombosis.
The test is then started, and platelet aggregation is recorded at approximately 0.5 second intervals for six minutes. Three parameters are calculated: aggregation, velocity and area under the curve (AUC). Aggregation (in AU) is the maximum height of the aggregation curve, and velocity (in AU/min) is the maximum slope of the curve.
In biochemistry and medicine, glycoprotein IIb/IIIa (GPIIb/IIIa, also known as integrin α IIb β 3) is an integrin complex found on platelets. It is a transmembrane receptor for fibrinogen [1] and von Willebrand factor, and aids platelet activation. The complex is formed via calcium-dependent association of gpIIb and gpIIIa, a required step in ...
Platelets immediately form a plug at the site of injury; this is called primary hemostasis. Secondary hemostasis occurs simultaneously: additional coagulation factors beyond factor VII (listed below) respond in a cascade to form fibrin strands, which strengthen the platelet plug. [1] Coagulation is highly conserved throughout biology
This complex interacts with fibrinogen and thus plays an important role in platelet aggregation and adhesion to endothelial surfaces. Activation of this complex initiates the platelet aggregation and the formation of primary platelet plug, a fibrin clot. The IIb / IIIa complex is a major platelet membrane component. There are as many as 50 000 ...