Abdominal Aortic Aneurysm
Abdominal Aortic Aneurysm - Related Videos
10:12
Near-infrared Fluorescence Imaging of Abdominal Aortic Aneurysms
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2023
Source: Arvin H. Soepriatna1, Kelsey A. Bullens2, and Craig J. Goergen1 1 Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana 2 Department of Biochemistry, Purdue University, West Lafayette, Indiana Near-infrared fluorescence (NIRF) imaging is an exciting optical technique that utilizes fluorescent probes to visualize complex biomolecular assemblies in tissues. NIRF imaging has many advantages over conventional imaging methods for noninvasive imaging of diseases.
10:23
Creation of Murine Experimental Abdominal Aortic Aneurysms with Elastase
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Cited by 55 •
2009
This video shows how to induce abdominal aortic aneurysms (AAA) in mice via transient intraluminal infusion of porcine pancreatic elastase into the infrarenal segment of the abdominal aorta. The model has the ability to add broad insight into the pathobiology of AAA due to the emergence of numerous transgenic and gene knockout mice.
10:24
Quantitative Strain Mapping of an Abdominal Aortic Aneurysm
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2023
Source: Hannah L. Cebull1, Arvin H. Soepriatna1, John J. Boyle2 and Craig J. Goergen1 1Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana 2Mechanical Engineering & Materials Science, Washington University in St. Louis, St Louis, Missouri The mechanical behavior of soft tissues, such as blood vessels, skin, tendons, and other organs, are strongly influenced by their composition of elastin and collagen, which provide elasticity and strength. The fiber...
08:37
Creation of a Rodent Model of Abdominal Aortic Aneurysm by Blocking Adventitial Vasa Vasorum Perfusion
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Cited by 12 •
2017
Polyurethane catheter insertion into the aortic lumen and suture ligation of the aorta induce chronic hypoxia due to hypoperfusion of the adventitial vasa vasorum. This article describes a novel animal model of abdominal aortic aneurysm (AAA) with characteristics similar to those of AAA in humans.
08:54
Reliable Creation of a Murine Abdominal Aortic Aneurysm Model Using Elastin Sensitization and Perivascular Elastase
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2026
This protocol provides a repeatable and reliable method for inducing abdominal aortic aneurysms (AAAs) in C57BL/6 mice using elastin sensitization and perivascular elastase application, as an AAA model that incorporates an immune-sensitization component.
FAQs
AAA progression depends on interacting changes in the vessel wall. Inflammation contributes to degradation of extracellular-matrix proteins, the structural materials that help maintain wall integrity. At the same time, vascular smooth muscle cells lose function, reducing their contribution to wall maintenance. These changes leave the aorta less able to withstand pressure, allowing dilation to continue. This explains why AAA biology focuses on both cellular behavior and tissue structure.
Genetics, aging, and smoking are relevant because they can influence the cellular and molecular processes that weaken the aortic wall. The overview identifies these factors as contributors to variation in AAA biology, rather than as isolated explanations. Studying them helps researchers connect inherited susceptibility and life-course exposures with inflammation, extracellular-matrix degradation, and vascular smooth muscle cell dysfunction.
Once wall strength is reduced, normal blood pressure can act on the compromised aortic wall and promote further outward dilation. This creates a mechanically important link between molecular injury and aneurysm enlargement: degradation of extracellular-matrix proteins and impaired smooth muscle cell function reduce structural support, while pressure continues to load the weakened region. Understanding this relationship helps explain why progression is a central concern in AAA biology.
Ultrasound and computed tomography both support clinical assessment by helping detect and monitor an abdominal aortic aneurysm. The overview identifies imaging as the practical way clinicians follow the condition over time, while biology explains why enlargement matters. Together, these tools connect observable changes in the aorta with decisions about surveillance and whether the risk has become substantial enough to consider repair.
Clinicians may consider repair when the risk associated with the aneurysm becomes substantial rather than relying only on continued observation. The available approaches named in the overview are surgical repair and endovascular repair. Their preventive purpose is to reduce the chance that progressive wall weakening and dilation will culminate in rupture, which can cause life-threatening internal bleeding.
Biology research examines the processes that make the aortic wall progressively less resilient, including inflammation, extracellular-matrix protein degradation, and loss of vascular smooth muscle cell function. It also evaluates how genetics, aging, and smoking shape those processes. This molecular and cellular perspective complements imaging by addressing why enlargement develops and progresses.