Related Experiment Videos
Noninvasive cardiovascular phenotyping in mice.
Craig J Hartley1, George E Taffet, Anilkumar K Reddy
1Section of Cardiovascular Sciences, Department of Medicine, DeBakey Heart Center, Baylor College of Medicine, Houston, TX, USA.
ILAR Journal
|July 10, 2002
Summary
Noninvasive ultrasound methods enable detailed monitoring of the mouse cardiovascular system. These techniques are crucial for studying cardiovascular diseases in genetically engineered mouse models.
Area of Science:
- Cardiovascular physiology
- Medical imaging
- Animal models
Background:
- Genetic engineering has increased the use of mice as models for human diseases.
- Monitoring the murine cardiovascular system is essential for disease research.
- Noninvasive methods are preferred for serial measurements in living animals.
Purpose of the Study:
- To develop and apply high-resolution Doppler probes for noninvasive cardiovascular monitoring in mice.
- To assess various cardiovascular parameters including cardiac function, arterial stiffness, and blood pressure.
- To facilitate the evaluation of cardiovascular phenotypes in mutant mice.
Main Methods:
- Utilized high-resolution Doppler probes and advanced signal processing.
- Measured blood velocity in the heart and peripheral vessels of anesthetized mice.
- Incorporated monitoring of body temperature and electrocardiogram during procedures.
Main Results:
- Successfully measured cardiac filling and ejection velocities for systolic and diastolic function.
- Determined pulse-wave velocity and arterial stiffness using velocity pulse arrival times.
- Assessed peripheral velocity waveforms, stenotic velocities, and tail artery blood pressure noninvasively.
Conclusions:
- Developed convenient and easy-to-apply noninvasive methods for murine cardiovascular assessment.
- These methods are effective in detecting and evaluating cardiovascular phenotypes in mutant mice.
- High spatial and temporal resolution is critical for accurate measurements in small animals with high heart rates.