Remotely Triggered LAD Occlusion Using a Balloon Catheter in Spontaneously Breathing Mice
March 22nd, 2024
This article presents a unique closed-chest technique for inducing myocardial ischemia-reperfusion injury (IRI) in mice. The presented method allows mice to breathe spontaneously while remotely inducing myocardial ischemia. This provides access to the animal for studying the dynamic processes of ischemia and reperfusion in situ and in real-time via noninvasive imaging.
Scope of our research is to develop a new standardized technique for marine ischaemia-reperfusion injury. This allows us to obtain real-time biomedical imaging, creating new insights into the mechanistic effects of acute myocardial injury. The most challenging parts in the development of this model was to create a well-controlled direct access to the coronary vessels.
This needs to happen in a living, spontaneously breeding animal one meter further away. Its capacity to reduce surgical trauma, to enhance control over ischemia time and to improve experimental consistency underscores its significance. Additionally, our technique allows us to obtain real-time imaging during acute myocardial infarction or myocardial ischemia-reperfusion injury.
Overview
This article presents a novel closed-chest technique for inducing myocardial ischemia-reperfusion injury (IRI) in mice, allowing for spontaneous breathing and remote induction of ischemia. This method facilitates the study of ischemia and reperfusion dynamics in real-time through noninvasive imaging.
Key Study Components
Area of Science
- Cardiovascular research
- Biomedical imaging
- Ischemia-reperfusion injury
Background
- Development of a standardized technique for marine ischemia-reperfusion injury.
- Real-time biomedical imaging provides insights into acute myocardial injury mechanisms.
- Challenges included direct access to coronary vessels in a living animal.
- Technique aims to reduce surgical trauma and enhance experimental consistency.
Purpose of Study
- To create a reliable model for studying myocardial ischemia-reperfusion injury.
- To improve control over ischemia time during experiments.
- To facilitate real-time imaging during acute myocardial infarction.
Methods Used
- Closed-chest technique for inducing myocardial IRI.
- Remote induction of ischemia while allowing spontaneous breathing.
- Noninvasive imaging techniques for real-time observation.
- Standardized protocols to enhance reproducibility.
Main Results
- Successful induction of myocardial ischemia-reperfusion injury in mice.
- Real-time imaging revealed dynamic processes during ischemia and reperfusion.
- Demonstrated reduced surgical trauma compared to traditional methods.
- Enhanced control over ischemia duration improved experimental outcomes.
Conclusions
- The closed-chest technique is a significant advancement in myocardial injury research.
- Real-time imaging provides valuable insights into ischemia-reperfusion dynamics.
- This method can lead to improved understanding and treatment of myocardial injuries.
