Animal models for cardiac arrhythmias.

Area of Science:

• Cardiovascular Research
• Molecular Biology
• Animal Models

Background:

• Transgenic and gene-targeted mice are crucial for studying cardiac physiology and pathophysiology.
• Assessing cardiac function in these models requires robust methodologies.
• Cardiac channelopathies necessitate precise evaluation of cardiac electrical activity and cellular function.

Purpose of the Study:

• To describe surgical implantation techniques for telemetry devices in mice.
• To outline methods for recording and analyzing electrocardiograms in mouse models.
• To present a protocol for isolating viable single-ventricular myocytes from mouse hearts.

Main Methods:

• Surgical implantation of telemetry transmitters for in vivo physiological monitoring.
• Electrophysiological techniques, including electrocardiogram recording and analysis.
• Isolation of single-ventricular myocytes for cellular-level assessment.

Main Results:

• Successful implantation and data acquisition using telemetry.
• Detailed electrocardiogram analysis for cardiac function assessment.
• Optimized protocol for high yield and bioavailability of isolated mouse ventricular myocytes.

Conclusions:

• Telemetry and electrophysiological techniques are vital for phenotyping transgenic mice.
• The presented myocyte isolation protocol enhances experimental success.
• These methods collectively advance the study of cardiac disease models.