Novel antiplatelet agent ticagrelor in the management of acute coronary syndrome

  • Ramaraj R
  • Movahed M
  • Hashemzadeh M
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Current clinical guidelines recommend dual antiplatelet agents namely aspirin and clopidogrel for the treatment of patients suffering from acute coronary syndrome (ACS). But the efficacy of clopidogrel is variable as it is a pro-drug, which has to be metabolized to become an active drug thus exhibiting variable platelet inhibition, increases risk of bleeding, stent thrombosis, and ischemia. To overcome this limitation, prasugrel was developed with increased antiplatelet activity thereby reducing the risk of myocardial ischemia and stent thrombosis. This action of prasugrel was associated with an increased risk of major bleeding. Finally, a novel reversible and direct-acting oral adenosine diphosphate (ADP) receptor antagonist, ticagrelor was developed that showed consistent and increased P2Y12 inhibition with similar incidence of bleeding but greater reduction in cardiac events compared to clopidogrel. The focus of this article is to review ticagrelor as a new class of P2Y12 inhibitor.

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