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Published on: May 26, 2022
Role of the angiotensin II receptor blocker valsartan in heart failure
1Metabolic and Cardiovascular Diseases, Novartis Pharmaceuticals Corporation, Summit, New Jersey, USA; and.
Abstract:
Despite an enormous amount of research carried out in the past 10 to 20 years, the role of the renin-angiotensin system in the development of heart failure is still not very well understood. This review looks at preclinical data on the role of angiotensin II as a circulating and local hormone, and the effects of stimulation of the respective receptors in heart tissue. Recent large scale clinical trials have begun to furnish evidence of the effects of blocking the renin-angiotensin system in patients with heart failure using angiotensin-converting enzyme inhibitors or, more recently, angiotensin II receptor blockers that act directly at the receptor level, independent of pathways for angiotensin II generation. Results so far indicate that there are benefits from optimizing the blockade, but open questions remain, such as the role of endothelin and bradykinins, and the extent of crosstalk between the different systems.
Insights
The renin-angiotensin system
Area of Science:
- Cardiovascular Research
- Endocrinology
- Pharmacology
Background:
- The precise role of the renin-angiotensin system (RAS) in heart failure pathogenesis remains incompletely understood despite extensive research.
- Angiotensin II is implicated as both a circulating and local hormone affecting heart tissue via receptor stimulation.
Purpose of the Study:
- To review preclinical data on angiotensin II's role in heart failure.
- To analyze clinical trial evidence for RAS blockade in heart failure patients.
- To identify remaining questions regarding RAS modulation and interacting systems.
Main Methods:
- Review of preclinical studies on angiotensin II and its receptors in cardiac tissue.
- Analysis of large-scale clinical trials evaluating angiotensin-converting enzyme inhibitors and angiotensin II receptor blockers.
- Examination of evidence for optimizing RAS blockade strategies.
Main Results:
- Clinical trials demonstrate benefits of blocking the renin-angiotensin system in heart failure.
- Angiotensin II receptor blockers offer a direct blockade pathway independent of angiotensin II generation.
- Optimizing RAS blockade shows positive outcomes in heart failure management.
Conclusions:
- While RAS blockade offers benefits in heart failure, further research is needed.
- The roles of endothelin and bradykinins in heart failure require elucidation.
- Understanding the crosstalk between different neurohormonal systems is crucial for comprehensive heart failure treatment.
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