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Recent advance in antiplatelet therapy: the mechanisms, evidence and approach to the problems
1Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan. horiuchi@kuhp.kyoto-u.ac.jp
Insights
Identifying patients resistant to antiplatelet therapy is crucial for preventing cardiovascular events. This review explores alternative antiplatelet drugs for patients with aspirin or thienopyridine resistance.
Area of Science:
- Cardiology
- Pharmacology
- Thrombosis
Background:
- Antiplatelet therapy is vital for preventing ischemic cardiovascular diseases and thrombotic events post-coronary stent implantation.
- Aspirin and thienopyridines (P2Y12 inhibitors) are established antiplatelet agents.
- Platelet resistance to these drugs is linked to elevated cardiovascular risk.
Purpose of the Study:
- To review current challenges in antiplatelet therapy, focusing on drug resistance.
- To discuss alternative antiplatelet agents for patients with aspirin or thienopyridine resistance.
- To explore the mechanisms, evidence, and clinical approaches for managing antiplatelet resistance.
Main Methods:
- Literature review of clinical evidence on antiplatelet drugs.
- Analysis of mechanisms of action for various antiplatelet agents.
- Discussion of clinical implications and management strategies for antiplatelet resistance.
Main Results:
- Platelet resistance to aspirin and thienopyridines poses a significant clinical problem.
- Alternative antiplatelet drugs show promise for patients with resistance.
- Understanding drug resistance mechanisms is key to optimizing therapy.
Conclusions:
- Effective identification and management of antiplatelet resistance are essential for improving patient outcomes.
- Alternative antiplatelet agents offer viable options for resistant patient populations.
- Further research into novel antiplatelet mechanisms and resistance pathways is warranted.
Abstract:
Antiplatelet therapy has been established as a preventive medicine for ischemic cardiovascular diseases both at acute and chronic phases. This therapy is also crucial for the prevention of thrombotic events after coronary stent implantation. So far, many lines of clinical evidence have demonstrated the beneficial effects of aspirin (an irreversible cyclooxygenase inhibitor) and thienopyridine derivatives (adenosine diphosphate (ADP)-receptor P2Y12 inhibitors). Recently, it has been reported that the cardiovascular risk is elevated in patients with platelets resistant to these drugs, compared to the good responders. One of the current problems to be solved in antiplatelet therapy is to find out patients resistant to the antiplatelet therapy and improve its preventive effects. In addition to aspirin and thienopyridines, several types of drugs with antiplatelet effects are currently available in clinical practice. Clinical evidence has recently been accumulating for these drugs that can be potential alternatives in patients with aspirin or thienopyridine resistance. In this review, the mechanisms, evidence and approach to the present problems of drugs with antiplatelet effects are discussed.
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