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Published on: September 5, 2016
Anti-Platelet Therapy for Acute Coronary Syndrome: A Review of Currently Available Agents and What the Future Holds
F A Syed1, J H N Bett, D L Walters
1The Prince Charles Hospital, Brisbane, Queensland, Australia. sfarhan5@yahoo.com.
Insights
Dual anti-platelet therapy with aspirin and clopidogrel is standard for acute coronary syndromes (ACS). New anti-platelet agents are being evaluated to improve outcomes beyond current therapies for ACS patients.
Area of Science:
- Cardiology
- Pharmacology
Background:
- Dual anti-platelet therapy (DAPT) with aspirin and clopidogrel is a standard treatment for acute coronary syndromes (ACS).
- Despite DAPT's efficacy, many ACS patients experience recurrent ischemic events.
- Limitations of clopidogrel include delayed onset, variable response, and lack of an intravenous form.
Purpose of the Study:
- To review existing anti-platelet regimens for ACS.
- To discuss novel anti-platelet agents under clinical evaluation for ACS management.
Main Methods:
- Literature review of randomized controlled trials on anti-platelet therapy in ACS.
- Discussion of the pharmacological properties and clinical limitations of aspirin and clopidogrel.
- Overview of emerging anti-platelet agents and their clinical trial status.
Main Results:
- Aspirin and clopidogrel significantly reduce cardiovascular events in ACS patients.
- Aspirin is a weak anti-platelet agent, and clopidogrel's effectiveness is limited by its prodrug nature and inter-individual variability.
- Novel anti-platelet agents aim to overcome the shortcomings of current therapies.
Conclusions:
- Novel anti-platelet agents show promise in addressing the unmet needs in ACS management.
- Further clinical evaluation is necessary to establish the role of new agents in ACS treatment paradigms.
Abstract:
Dual anti-platelet therapy remains a cornerstone in the management of patients suffering from acute coronary syndromes (ACS). The combination of aspirin and clopidogrel has been shown to result in significant reductions in cardiovascular end points including recurrent infarction and death in several randomised control trial of patients with ACS. However, many patients still experience ischaemic events on the combination of aspirin and clopidogrel. Aspirin is a relatively weak anti platelet agent. Clopidogrel is a pro drug that required activation by hepatic metabolism and hence its onset of action is delayed; there is genetic variation in the clinical response to the drug, the platelet inhibition is irreversible and no intravenous form is available. Consequently new anti-platelet agents have been developed to address the short falls of this combination therapy. This paper discusses existing anti-platelet regimes and focuses on novel antiplatelet agents that are currently under clinical evaluation.
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