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Focal Cerebral Ischemia Model by Endovascular Suture Occlusion of the Middle Cerebral Artery in the Rat
Published on: February 5, 2011
Functional evaluation of cerebral microembolization in the rat
Magnus W Roos1, Anders Ericsson, Marita Berg
1Department of Surgical Sciences, Section of Anesthesiology and Intensive Care, Uppsala University, S-751 85 Uppsala, Sweden. magnus.roos@surgsci.uu.se
Brain Research
|January 22, 2003
Summary
Cerebral microembolism in rats significantly impairs motor skills and alters risk assessment behavior. This study highlights the impact of small infarcts on neurological function and behavior.
Area of Science:
- Neuroscience
- Behavioral Neuroscience
Background:
- Cerebral microembolism is a significant cause of stroke.
- Understanding its effects on motor function and behavior is crucial for developing treatments.
Purpose of the Study:
- To investigate the impact of induced cerebral microembolism on motor performance and risk assessment behavior in rats.
- To establish a reliable model for studying cerebral infarction.
Main Methods:
- Cerebral infarcts were induced in rats using plastic bead embolization.
- Behavioral tests assessed motor ability and risk assessment 24 hours post-embolization.
- Magnetic resonance imaging (MRI) quantified infarct volume and location.
Main Results:
- Embolized rats showed significantly decreased spontaneous locomotion, gait capacity, and muscular strength compared to controls.
- A correlation was found between motor deficits and the volume of infarcted tissue in the brain stem, cortex, and cerebellum.
- Risk-benefit assessment behaviors were altered in embolized animals.
Conclusions:
- The embolization model effectively induces cerebral microinfarcts and measurable behavioral changes.
- This approach provides a valuable tool for studying the pathophysiology and potential treatments for cerebral infarction.
- Motor and cognitive functions are demonstrably affected by microembolic events.
