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Author Spotlight: Development and Characterization of a Mouse Model for Abdominal Aortic Aneurysm
Published on: August 2, 2024
Current status of medical treatment for abdominal aortic aneurysm
Koji Kurosawa1, Jon S Matsumura, Dai Yamanouchi
1Division of Vascular Surgery, Department of Surgery, University of Wisconsin School of Medicine and Public Health.
Insights
Abdominal aortic aneurysm (AAA) is a significant cause of death. Medical treatments, like doxycycline which inhibits matrix metalloproteinases (MMP), aim to prevent AAA rupture and surgical intervention.
Area of Science:
- Vascular Surgery
- Pharmacology
- Cardiovascular Medicine
Background:
- Cardiovascular disease is a leading cause of death.
- Abdominal aortic aneurysm (AAA) ranks as the 15th leading cause of death for individuals over 65 in the USA.
- Current standard treatments for AAA involve invasive surgical repair (open surgery or endovascular aneurysm repair).
Purpose of the Study:
- To review the pathophysiology of AAA.
- To explore potential medical therapies for AAA.
- To discuss pharmacological agents that may prevent AAA rupture or enlargement.
Main Methods:
- Review of existing literature on AAA pathophysiology.
- Analysis of proposed pharmacological treatments for AAA.
- Discussion of the role of matrix metalloproteinases (MMPs) in AAA development.
- Mention of the ongoing Non-invasive Treatment of Abdominal Aortic Aneurysm Clinical Trial (N-TA(3)CT).
Main Results:
- Matrix metalloproteinases (MMPs) are implicated in AAA pathogenesis.
- Several drug classes, including doxycycline (an MMP inhibitor), are being investigated for medical AAA treatment.
- Doxycycline shows promise as a potential non-invasive therapy for AAA.
Conclusions:
- Medical management of AAA focuses on preventing rupture and avoiding surgery.
- Doxycycline represents a promising pharmacological approach for AAA treatment.
- Further clinical trials, such as N-TA(3)CT, are crucial to validate non-invasive AAA therapies.
Abstract:
Although cardiovascular disease is widely recognized as the leading cause of death, a lesser known fact is that aortic aneurysm is the 15th leading cause of death over the age of 65 years in the USA. The golden standard of the treatments are invasive interventions either with open surgical repair (OS) or endovascular aneurysm repair (EVAR). The concept of medical treatment is to prevent abdominal aortic aneurysm (AAA) from rupture and avoid surgical treatment by preventing aneurysm enlargement or even reducing aneurysm size. Matrix metalloproteinases (MMP) are structurally related metalloendopeptidases that can degrade the extracellular matrix and is thought to play important roles in AAA. There are many proposed pharmacological treatments including: β-blockers, angiotensin-converting enzyme inhibitor (ACE inhibitors), angiotensin-receptor blocker (ARB), statins, macrolides and, doxycycline, an inhibitor of the MMP. The latter is a potential promising drug as medical treatment for AAA and the Non-invasive Treatment of Abdominal Aortic Aneurysm Clinical Trial (N-TA(3)CT) is currently ongoing in the USA. Here, the pathophysiology and potential medical therapy for AAA will be reviewed.
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