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Clopidogrel, sold under the brand name Plavix among others, is an antiplatelet medication used to reduce the risk of heart disease and stroke in those at high risk. [10] It is also used together with aspirin in heart attacks and following the placement of a coronary artery stent (dual antiplatelet therapy). [10] It is taken by mouth. [10]
Dipyridamole inhibits platelet phosphodiesterase, causing an increase in cyclic AMP with potentiation of the action of PGI 2 – opposes actions of TXA 2; Epoprostenol is a prostacyclin that is used to inhibit platelet aggregation during renal dialysis (with or without heparin) and is also used in primary pulmonary hypertension.
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. They may also be used to treat acute coronary syndromes, without percutaneous coronary intervention, depending on TIMI risk. They should be given intravenously.
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 ...
Ticlopidine, clopidogrel and prasugrel are thienopyridine prodrugs that are irreversible platelet inhibitors of the P2Y 12 receptor. Cangrelor and ticagrelor are direct –acting P2Y 12 inhibitors that change the conformation of the P2Y 12 receptor and therefore, results in reversible platelet inhibition of the receptor. Thienopyridines are ...
platelet aggregation inhibitor oral or intravenous Abdominal or stomach cramps, diarrhea, dizziness or lightheadedness [44] [45] [46] [41] clopidogrel: antiplatelet [45] [41] ticlid: enoxaparin: anticoagulant activation of antiprothrombin, prevents fibrin formation slow IV platelet count is monitored [45] [41] dalteparin: anticoagulant
Ticagrelor (Brilinta) is often listed with thienopyridine inhibitors and has similar indications for use but is not a thienopyridine. It is a cyclo-pentyltriazolo-pyrimidine that is distinct from the mechanism of the thienopyridines in that it reversibly (rather than irreversibly) inhibits the P2Y 12 receptor.
When a small amount of PGE1 (20 μL) is added to the ADPtest, it induces a moderat inhibition of aggregation in normal samples, but greatly increases the sensitivity of platelets to inhibition by clopidogrel. This is why the modified test is called "High Sensitivity".