简介：
Overview
This protocol outlines the implantation of an osmotic pump and a vascular access port in ApoE deficient mice to study abdominal aortic aneurysm progression. It emphasizes the use of 3D ultrasound for monitoring aneurysm development.
Key Study Components
Area of Science
- Neuroscience
- Cardiovascular research
- Drug testing protocols
Background
- Abdominal aortic aneurysms (AAAs) are significant health concerns.
- ApoE deficient mice serve as a model for studying AAAs.
- Angiotensin II is used to induce aneurysm formation.
- Monitoring techniques are crucial for assessing aneurysm progression.
Purpose of Study
- To establish a reliable method for inducing and monitoring AAAs in mice.
- To facilitate drug testing aimed at reducing aneurysm progression.
- To improve the understanding of aneurysm development in a controlled environment.
Methods Used
- Implantation of an osmotic pump for angiotensin II release.
- Insertion of a vascular access port with a jugular vein catheter.
- 3D ultrasound imaging for monitoring aortic changes.
- Detailed surgical procedures for catheterization and pump implantation.
Main Results
- Successful implantation of devices in mice.
- Effective monitoring of aneurysm development using 3D ultrasound.
- Establishment of a workflow for drug testing in AAA models.
- Demonstration of the feasibility of repeated drug administration.
Conclusions
- The protocol provides a comprehensive approach to studying AAAs.
- 3D ultrasound is a valuable tool for monitoring aneurysm progression.
- This method can enhance drug testing for AAA therapies.
What is the significance of using ApoE deficient mice?
ApoE deficient mice are a relevant model for studying abdominal aortic aneurysms as they mimic aspects of human disease.
How does the osmotic pump function in this study?
The osmotic pump releases angiotensin II to induce the formation of abdominal aortic aneurysms in the mice.
What imaging technique is used to monitor aneurysm development?
3D ultrasound imaging is utilized to effectively monitor changes in aortic diameter and morphology.
Can the vascular access port be used for other treatments?
Yes, the vascular access port allows for repeated intravenous drug administration, making it versatile for various treatments.
What are the main outcomes of this protocol?
The protocol successfully establishes a method for inducing AAAs and monitoring them, facilitating drug testing.
Is this method applicable to other mouse models?
While designed for ApoE deficient mice, adaptations may allow use in other models with similar aneurysm characteristics.
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