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Updated: May 20, 2026

An Intact Pericardium Ischemic Rodent Model
Published on: September 2, 2021
[Coronary microvascular disease: from experimental models to clinical practice]
Cecilia Vecoli1, Chiara Caselli, Raffaele Caruso
1Instituto di Fisologia Clinica, Consiglio Nazionale delle Ricerche, Pisa. vecoli@ifc.cnr.it
Insights
Coronary microcirculation, vital for heart function, regulates blood flow to the heart. Impaired microcirculation can lead to heart failure, and animal models help study these issues.
Area of Science:
- Cardiology
- Physiology
- Pathophysiology
Context:
- The coronary microcirculation is crucial for maintaining myocardial function.
- It regulates oxygen and substrate delivery to cardiac cells via the capillary network.
- Dysfunction in these vessels contributes to left ventricular dysfunction and heart failure.
Purpose:
- To investigate the role of coronary microcirculation in heart failure.
- To understand the mechanisms behind microvascular dysfunction.
- To explore the utility of animal models in studying these conditions.
Summary:
- Coronary microcirculation, comprising resistance vessels, regulates blood flow and nutrient supply to the myocardium.
- Alterations impairing myocardial perfusion can trigger ischemic events, leading to left ventricular dysfunction in various cardiomyopathies.
- The precise mechanisms of microvascular dysfunction remain unclear, necessitating research using experimental animal models.
Impact:
- Animal models offer insights into microcirculation impairment.
- They serve as platforms for identifying novel therapeutic targets.
- These models are essential for testing new drug therapies for left ventricular dysfunction and heart failure progression.
Abstract:
Coronary vascular microcirculation plays a major role in the pathogenesis of left ventricular dysfunction as well as in the development of heart failure. Coronary microcirculation includes all the vessels which contribute to provide resistance to coronary flow. It represents the district where coronary circulation blood flow is regulated to ensure that each structural and functional cardiac component receives the proper amount of oxygen and metabolic substrates through the capillary network. Coronary microcirculation is fundamental for myocardial function which largely depends on the ratio between energetic metabolites received from coronary circulation and their utilization by the myocytes. Alterations in coronary microvascular circulation which limit myocardial perfusion can cause repetitive ischemic events leading to left ventricular dysfunction in several ischemic and non ischemic cardiomyopathies as the idiopathic dilated cardiomyopathy. To date, mechanisms underlying microvascular dysfunction are not completely understood and experimental animal models are employed to study alterations which may cause microcirculation impairment. These animals models are unique tools to identify new therapeutic targets, to test new drug therapies for the treatment of left ventricular dysfunction as well as its progression towards overt heart failure.
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