Plasticity of Astrocytic Coverage and Glutamate Transporter Expression in Adult Mouse Cortex
2006
Astrocytes Help Protect the Brain from Overstimulation
publication
Evidence: moderate
Author Information
Author(s): Christel Genoud, Graham Knott
Hypothesis
Does increased neuronal activity in the sensory cortex trigger a corresponding response in astrocytes?
Conclusion
Astrocytes increase their glutamate transporters in response to sensory overstimulation, helping to clear excess glutamate from the synaptic cleft.
Supporting Evidence
- Astrocytes increase their glutamate transporters in response to sensory overstimulation.
- After stimulation, transporter levels returned to baseline.
- Stimulation caused astrocytes to encircle excitatory synapses.
Takeaway
Astrocytes are like little helpers in the brain that clean up messes caused by too much excitement, making sure everything works smoothly.
Methodology
The authors hyperstimulated a single whisker in unanesthetized adult mice and analyzed changes in astrocyte glutamate transporter levels and interactions with neurons.
Participant Demographics
Adult mice
Digital Object Identifier (DOI)
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