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Published on: February 3, 2021

The role of adenosine 5'-diphosphate receptor blockade in patients with cardiovascular disease

D J Solet1, L R Zacharski, J F Plehn

  • 1Section of Cardiology, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA.

The American Journal of Medicine
|July 13, 2001
PubMed

Insights

New thienopyridine antiplatelet agents, like clopidogrel, offer improved cardiovascular event reduction compared to aspirin by blocking adenosine diphosphate (ADP) receptors. These agents target an alternate pathway for platelet activation.

Area of Science:

  • Cardiology
  • Pharmacology

Background:

  • Aspirin is a long-standing antiplatelet agent but has limitations in cardiovascular event prevention.
  • Existing alternatives like dipyridamole and oral glycoprotein IIb/IIIa inhibitors have shown limited efficacy.

Purpose of the Study:

  • To review the pharmacology, clinical studies, and applications of thienopyridines.
  • To compare the efficacy of thienopyridines with aspirin in cardiovascular event reduction.

Main Methods:

  • Review of existing literature on antiplatelet agents, focusing on thienopyridines.
  • Analysis of clinical studies evaluating ticlopidine and clopidogrel.

Main Results:

  • Thienopyridines, including ticlopidine and clopidogrel, inhibit platelet adenosine 5'-diphosphate (ADP) receptors.
  • ADP inhibitors demonstrate slightly greater effectiveness than aspirin in reducing cardiovascular events by targeting an alternative platelet activation pathway.

Conclusions:

  • Thienopyridines represent a new class of antiplatelet medications with enhanced efficacy over aspirin.
  • These agents offer a promising alternative for cardiovascular event prevention.

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