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Updated: May 11, 2026

A Methodological Approach to Non-invasive Assessments of Vascular Function and Morphology
Published on: February 7, 2015
Carotid artery intima-media thickness and the renin-angiotensin system
Christopher T Johnson1, Luke P Brewster
1Emory University School of Medicine, Atlanta, GA30322, USA.
Insights
Carotid artery intima-media thickness (IMT) reduction may be influenced by angiotensin-converting enzyme (ACE) inhibitors and angiotensin receptor blockers (ARBs). This review updates understanding of their role in improving arterial health and cardiovascular disease outcomes.
Area of Science:
- Cardiovascular medicine
- Pharmacology
- Vascular biology
Background:
- Carotid artery intima-media thickness (IMT) serves as a key biomarker for cardiovascular disease risk.
- Hypertension management is crucial for cardiovascular health.
- Angiotensin-converting enzyme (ACE) inhibition offers dual benefits for hypertension and arterial health.
Purpose of the Study:
- To review the current evidence on the role of ACE inhibitors and angiotensin receptor blockers (ARBs) in reducing carotid artery IMT.
- To clarify the therapeutic potential of these agents in improving vascular health and cardiovascular outcomes.
Main Methods:
- Literature review of studies investigating ACE inhibitors and ARBs effects on IMT.
- Analysis of clinical trial data and observational studies.
- Synthesis of evidence regarding mechanisms of action on arterial wall.
Main Results:
- ACE inhibitors and ARBs have demonstrated potential in decreasing IMT in various patient populations.
- Evidence suggests these drug classes may improve arterial health beyond blood pressure reduction.
- Further research is ongoing to fully elucidate their impact on cardiovascular mortality.
Conclusions:
- ACE inhibitors and ARBs may play a significant role in IMT regression.
- These agents represent a valuable therapeutic strategy for managing cardiovascular disease risk.
- Understanding their vascular effects is critical for optimizing treatment protocols.
Abstract:
Carotid artery intima-media thickness (IMT) is a biomarker for cardiovascular disease that also predicts the risk of cardiovascular mortality. Angiotensin-converting enzyme (ACE) inhibition is a unique therapeutic modality because it both treats hypertension and improves arterial health and cardiovascular disease outcomes. Controversy exists regarding the role of ACE inhibitors and angiotensin receptor blockers (ARBs) in IMT regression. Our article provides an update on how ACE inhibitors and ARBs could play a role in decreasing IMT.
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