Modified technique for coronary artery ligation in mice

Area of Science:

• Cardiovascular Research
• Preclinical Models
• Surgical Techniques

Background:

• Myocardial infarction (MI) is a leading cause of human mortality.
• Understanding MI pathophysiology is crucial for developing novel cardiovascular therapies.
• Experimental MI models in mice are valuable tools in preclinical research.

Purpose of the Study:

• To provide a detailed, step-by-step video guide for inducing experimental myocardial infarction (MI) in mice.
• To establish a reproducible method for creating a consistent infarct size in preclinical studies.
• To facilitate research into the pathophysiology of myocardial ischemia and identify new therapeutic targets.

Main Methods:

• Anesthesia with isoflurane and mechanical ventilation.
• Surgical induction of MI via left thoracotomy and ligation of the left coronary artery (LCA).
• Postoperative care including analgesia and monitoring for recovery.

Main Results:

• Successful induction of experimental myocardial infarction in mice.
• Achieved an approximate infarct size of 40% of the left ventricle.
• Demonstrated a standardized surgical procedure for reproducible MI induction.

Conclusions:

• The described method provides a reliable technique for inducing MI in mice.
• This model is essential for advancing the understanding of myocardial ischemia.
• The findings support the development of innovative therapeutic strategies for cardiovascular diseases.