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Novel Percutaneous Approach for Deployment of 3D Printed Coronary Stenosis Implants in Swine Models of Ischemic Heart Disease
Published on: February 18, 2020
Insights
The search for new antianginal therapies should not focus on specific coronary vasodilation. While some vasodilators show efficacy, their effects in humans differ from animal models, limiting current therapeutic concepts.
Area of Science:
- Cardiology
- Pharmacology
Context:
- Antianginal therapy aims to alleviate chest pain associated with angina.
- Vasodilating agents are commonly used in managing angina.
- The pathophysiological basis of these therapies requires critical evaluation.
Purpose:
- To critically review the pathophysiological basis of antianginal therapy with vasodilating agents.
- To assess the validity of pursuing specific coronary vasodilation for new antianginal agents.
Summary:
- Current antianginal therapies using vasodilating agents are reviewed.
- Evidence suggests that the concept of specific coronary vasodilation may not be a fruitful avenue for developing new antianginal drugs.
- Observed efficacy in clinical trials may not directly correlate with the proposed mechanism of coronary vasodilation due to differing effects in humans versus experimental animals.
Impact:
- Findings challenge the prevailing concept of specific coronary vasodilation in antianginal drug development.
- Highlights the importance of species-specific drug responses in pharmacological research.
- Suggests a need for re-evaluation of therapeutic strategies for angina based on robust pathophysiological understanding.
Abstract:
The pathophysiological basis of antianginal therapy with vasodilating agents is critically reviewed. The concept of specific coronary vasodilation should not be pursued in the search for new antianginal agents. Although controlled clinical trials with coronary vasodilators in patients have been successful, no inferences can be drawn as to the concept of coronary vasodilation since most of these compounds vasodilate only the coronaires of experimental animals after i.v. administration but not those of humans after oral ingestion. The stimulating influence of coronary vasodilators on coronary collaterals is an interesting but so far unproven claim. Nitroglycerine dilates the large epicardial coronary vessels. This effect can be of significance in excentric stenoses where the arterial wall is to a small part intact.
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