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Analyzing the Size, Shape, and Directionality of Networks of Coupled Astrocytes
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From Synapses to Circuits, Astrocytes Regulate Behavior.

Krissy A Lyon1, Nicola J Allen1

  • 1Molecular Neurobiology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, United States.

Frontiers in Neural Circuits
|January 24, 2022
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Summary
This summary is machine-generated.

Astrocytes, non-neuronal brain cells, actively regulate behavior. New research shows these cells causally influence sleep, memory, and cognitive functions in mice.

Keywords:
GPCRastrocytebehaviorchemogeneticoptogenetic

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Area of Science:

  • Neuroscience
  • Cell Biology

Background:

  • Astrocytes are glial cells that regulate synapses, forming the tripartite synapse.
  • Recent research highlights astrocyte influence beyond synapses, impacting neuronal circuitry and behavior.

Purpose of the Study:

  • To review recent findings on the active role of astrocytes in behavioral modulation.
  • To focus on in vivo studies, primarily in mice, demonstrating astrocyte-driven behaviors.

Main Methods:

  • Utilized tools for acute astrocyte manipulation, including optogenetics and chemogenetics.
  • Focused on in vivo studies in mice to establish causal links.

Main Results:

  • Demonstrated a causal role for astrocytes in modulating sleep, memory, sensorimotor behaviors, feeding, fear, and anxiety.
  • Highlighted astrocyte involvement in cognitive processes such as attention and behavioral flexibility.

Conclusions:

  • Astrocytes play a critical, active role in behavioral modulation.
  • Understanding astrocyte contributions to neuronal circuits is key to comprehending nervous system function and behavior.