Targeted Over-Expression of Glutamate Transporter 1 Reduces Ischemic Brain Injury in a Rat Model of Stroke
Author Information
Author(s): Harvey Brandon K., Airavaara Mikko, Hinzman Jason, Wires Emily M., Chiocco Matthew J., Howard Douglas B., Shen Hui, Gerhardt Greg, Hoffer Barry J., Wang Yun
Primary Institution: Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, Maryland, United States of America
Hypothesis
Does overexpression of the glutamate transporter GLT-1 reduce ischemic brain injury in a rat model of stroke?
Conclusion
Overexpression of GLT-1 significantly reduces ischemia-induced glutamate overflow, decreases cell death, and improves behavioral recovery in a rat model of stroke.
Supporting Evidence
- Animals receiving AAV-GLT1 showed significant decreases in extracellular glutamate during the stroke.
- A significant reduction in brain infarction was observed in the region of AAV-GLT1 injection.
- Behavioral recovery was significantly improved in animals treated with AAV-GLT1 compared to controls.
- TUNEL staining showed a significant reduction in cell death in the AAV-GLT1 group.
Takeaway
This study shows that giving a special treatment to increase a brain protein can help protect the brain from damage during a stroke and help the rats recover better.
Methodology
The study used a rat model where an adeno-associated viral vector expressing GLT-1 was injected before inducing a stroke, and various assessments were made on brain injury and recovery.
Limitations
The study was conducted in a rat model, which may not fully replicate human stroke conditions.
Participant Demographics
Adult male Fischer 344 and Sprague-Dawley rats were used.
Statistical Information
P-Value
<0.0001
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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