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Ambulatory ECG Recording in Mice
Published on: May 27, 2010
Method for non-invasively recording electrocardiograms in conscious mice
1Cardiovascular Division, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA. vchu1@caregroup.harvard.edu
BMC Physiology
|July 31, 2001
Summary
This study introduces a non-invasive system for recording electrocardiograms (ECGs) in conscious mice, enabling large-scale physiological monitoring and revealing new age- and gender-dependent variations in mouse ECGs.
Area of Science:
- Physiology
- Cardiology
- Animal Models
Background:
- Growing need for non-invasive physiological monitoring in mouse models.
- Existing methods for ECG recording in mice are often invasive or require anesthesia.
- Development of new technologies is crucial for advancing preclinical research.
Purpose of the Study:
- To develop a novel, non-invasive system for recording electrocardiograms (ECGs) in conscious, unrestrained mice.
- To create accessible software for analyzing murine ECG signals.
- To facilitate large-scale physiological screening in mouse models.
Main Methods:
- Development of a platform with embedded conductive electrodes for ECG recording.
- Utilizing a 3-paw contact system for signal acquisition in conscious mice.
- Creation of internet-accessible software for automated ECG signal analysis.
Main Results:
- Demonstrated significantly reduced heart rate variability in neonatal mice compared to adults.
- Identified significant ECG differences between female and male mice at baseline.
- Observed distinct ECG responses to beta-adrenergic stimulation in different genders.
Conclusions:
- The developed technology allows for non-invasive screening of ECG alterations in mice.
- Data obtained non-invasively align with findings from invasive methods.
- The system revealed novel age- and gender-dependent variations in murine ECGs, enhancing understanding of cardiovascular physiology.
