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Updated: May 25, 2026

In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography
Published on: February 16, 2016
Myocardial edema: a translational view
David Garcia-Dorado1, Mireia Andres-Villarreal, Marisol Ruiz-Meana
1Laboratory of Experimental Cardiology, Research Institute Cardiology Department Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona, Passeig de la Vall d'Hebron 119-129, 08035 Barcelona, Spain. dgdorado@vhebron.net
Insights
Myocardial edema, often seen in ischemia-reperfusion injury, affects cardiomyocyte volume regulation. New methods are needed to distinguish intracellular from extracellular edema for better diagnosis and treatment.
Area of Science:
- Cardiovascular Biology
- Cell Physiology
- Medical Imaging
Background:
- Myocardial edema is a key feature in various heart conditions, notably ischemia-reperfusion.
- Cardiomyocyte cell volume is regulated by osmolality, aquaporins, connexin hemichannels, and caveolae.
- Ischemia-reperfusion disrupts these mechanisms and increases microvascular permeability.
Purpose of the Study:
- To highlight the diagnostic utility of MRI in detecting myocardial edema.
- To address the current challenge in differentiating intra- from extracellular myocardial edema.
- To underscore the need for novel methods to understand edema mechanisms and improve patient outcomes.
Main Methods:
- Review of mechanisms regulating cardiomyocyte volume.
- Discussion of ischemia-reperfusion effects on microvasculature.
- Exploration of MRI's role in myocardial edema detection.
Main Results:
- Myocardial edema contributes to cell dysfunction and death in pathologies like ischemia-reperfusion.
- Existing methods struggle to differentiate between intracellular and extracellular myocardial edema.
- MRI shows promise for diagnosing myocardial edema in conditions such as acute myocardial infarction.
Conclusions:
- Distinguishing intra- and extracellular myocardial water is crucial for understanding edema's role.
- Developing such methods could lead to improved diagnostic and therapeutic strategies for myocardial edema.
- Further research into edema mechanisms can enhance clinical applications of MRI.
Abstract:
Myocardial edema occurs in a large number of myocardial pathologies particularly during ischemia-reperfusion, and may contribute to cell dysfunction and death occurring in these conditions. Cardiomyocyte cell volume is tightly regulated by modifications in cytosolic osmolality. Changes in membrane water permeability through aquaporin and connexin hemichannels also contribute to cell volume changes while caveolae may be important in sensing cell volume changes sensing and associated signaling. Ischemia-reperfusion alters these mechanisms and increases microvascular permeability by endothelial hypercontracture-induced gap formation, endothelial cell death and basal membrane disruption. Detection of myocardial edema by MRI has many useful diagnostic applications in acute myocardial infarction and other conditions. However, discrimination between intra and extracellular myocardial edema is presently difficult at the bench and impossible at the bedside. Developing methods to differentiate intra from extracellular myocardial water should allow a better understanding of the mechanisms and consequences of myocardial edema and, as a consequence lead to new diagnostic and therapeutic applications.
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