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Analytical Techniques for Assaying Nitric Oxide Bioactivity
Published on: June 18, 2012
Nitric oxide-releasing aspirin: will it say NO to atherothrombosis?
Insights
Nitric oxide-releasing aspirin offers a promising alternative to traditional aspirin for cardiovascular disease, potentially reducing gastrointestinal side effects while maintaining antithrombotic benefits. Further clinical trials are needed to confirm its efficacy and safety.
Area of Science:
- Cardiovascular Medicine
- Pharmacology
Background:
- Aspirin is a key anti-platelet agent for coronary atherosclerosis but causes gastrointestinal toxicity.
- Nitric oxide-releasing aspirin (NO-aspirin) presents a novel therapeutic approach.
Discussion:
- NO-aspirin dissociates into aspirin and nitric oxide (NO), providing antithrombotic and gastroprotective effects.
- It enhances vascular NO bioavailability, potentially offering antiatherogenic properties.
- Emerging data suggest benefits for vein graft patency in coronary artery bypass grafting (CABG).
Key Insights:
- NO-aspirin combines aspirin's antithrombotic action with NO's gastroprotective and vascular benefits.
- This dual action may mitigate aspirin's common gastrointestinal side effects.
- Potential improvements in vein graft function post-CABG are being investigated.
Outlook:
- Ongoing large-scale clinical trials are crucial to validate the role of NO-aspirin in cardiovascular disease management.
- Further research will determine the long-term efficacy and safety profile of NO-aspirin.
- NO-aspirin could represent a significant advancement in managing patients with atherosclerosis and high thrombotic risk.
Abstract:
Aspirin is a powerful anti-platelet drug widely used in patients with coronary atherosclerosis, but its side effects and especially its toxicity for gastrointestinal tract limit its usefulness in specific groups of patients. A new category of agents, nitric oxide-releasing aspirins (such as NCX-4016), seems to provide an alternative solution. Although this drug is still at phase II clinical trials, it has provided promising results until now. When administered in vivo, it is separated into an aspirin moiety and an NO-donating complex, providing both the antithrombotic effect of aspirin and the gastroprotective effect of NO. Additionally, it increases NO bioavailability as a vascular level, and it may have the antiatherogenic properties of endogenously produced NO. Finally, recent evidence suggests that it may also improve functional aspects of vein grafts used in CABG, with possible benefit on graft patency. However, the outcome of the large ongoing trials is needed before any conclusion is made about the role of NO-releasing aspirins in cardiovascular disease.
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