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A perfused rat brain model maintaining the connection between the central and peripheral nervous systems
Norio Kobayashi1, Yoko Hoshi, Mamoru Tamura
1Biophysics Group, Institute for Electronic Science, Hokkaido University, Sapporo 060-0812, Japan.
Journal of Neuroscience Methods
|January 7, 2004
Summary
Researchers created a novel rat brain perfusion model, separating cerebral circulation for independent study. This innovative technique allows manipulation of cerebral blood flow and metabolism, advancing brain research.
Area of Science:
- Neuroscience
- Physiology
- Medical Technology
Background:
- Studying the brain requires methods to isolate its circulation.
- Existing models often involve systemic circulation, limiting independent brain research.
- Preserving nervous system connections is crucial for accurate brain function studies.
Purpose of the Study:
- To develop a novel perfused brain model in rats.
- To separate cerebral circulation from systemic circulation while maintaining neural connections.
- To provide a platform for investigating brain function and metabolism independently.
Main Methods:
- Developed a rat model with isolated cerebral circulation via arterial and venous cannulation.
- Used ligations of common carotid, external carotid, and vertebral arteries.
- Infused perfusate into cannulated common carotid arteries and drained venous blood from jugular veins.
Main Results:
- Maintained normal electrocortical activity (EEG) for over 1 hour.
- Recorded somatosensory evoked potentials (SEPs).
- Induced epileptic discharges and cerebral arteriole dilation with pentylenetetrazol (PTZ) infusion, alongside increased systemic blood pressure.
Conclusions:
- The novel perfused brain model successfully isolates cerebral circulation.
- The model allows independent manipulation of cerebral blood flow and metabolism.
- This model offers a new approach for brain research, particularly in studying neurological conditions.