Cited by 345Neuroscience and Neuropharmacology ResearchMemory and Neural MechanismsNeuroinflammation and Neurodegeneration Mechanisms

Synapse-specific astrocyte gating of amygdala-related behavior

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Martin-Fernandez, Mario, Jamison, Stephanie, Robin, Laurie M, Zhao, Zhe, Martin, Eduardo D, Aguilar, Juan, Benneyworth, Michael A, Marsicano, Giovanni +1 more·2017·Nature Neuroscience

Abstract

The amygdala plays key roles in fear and anxiety. Studies of the amygdala have largely focused on neuronal function and connectivity. Astrocytes functionally interact with neurons, but their role in the amygdala remains largely unknown. We show that astrocytes in the medial subdivision of the central amygdala (CeM) determine the synaptic and behavioral outputs of amygdala circuits. To investigate the role of astrocytes in amygdala-related behavior and identify the underlying synaptic mechanisms, we used exogenous or endogenous signaling to selectively activate CeM astrocytes. Astrocytes depressed excitatory synapses from basolateral amygdala via A 1 adenosine receptor activation and enhanced inhibitory synapses from the lateral subdivision of the central amygdala via A 2A receptor activation. Furthermore, astrocytic activation decreased the firing rate of CeM neurons and reduced fear expression in a fear-conditioning paradigm. Therefore, we conclude that astrocyte activity determines fear responses by selectively regulating specific synapses, which indicates that animal behavior results from the coordinated activity of neurons and astrocytes.

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Authors
Martin-Fernandez, M., Jamison, S., Robin, L. M., Zhao, Z., Martin, E. D., Aguilar, J., Benneyworth, M. A., Marsicano, G., & Araque, A.
Affiliations
  • University of Minnesota (US)
  • Université de Bordeaux (FR)
  • Servicio de Salud de Castilla La Mancha (ES)
Corresponding author
Araque, Alfonso
Venue
Nature Neuroscience
Published
2017-09-25
Volume
20
Issue
11
Pages
1540-1548
ISSN
  • 1097-6256 (ISSN-L)
  • 1546-1726
OpenAlex
W2759821008
Cited by
345
References
64
Citations by year
2026: 28 · 2025: 51 · 2024: 45 · 2023: 48 · 2022: 44 · 2021: 41 · 2020: 37 · 2019: 29 · 2018: 20 · 2017: 1
FWCI
11.65
Type
journal article
Language
en
Open access
Locations
  • Nature Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Neurological Disorders and Stroke (R01NS097312)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
astrocytes, central amygdala, fear expression, fear conditioning, adenosine A1 receptor, adenosine A2A receptor, synaptic transmission, excitatory synapses, inhibitory synapses, basolateral amygdala, astrocyte-neuron interaction, neuronal firing rate
MeSH terms
Amygdala, Animals, Astrocytes, Fear, Male, Mice, Inbred C57BL, Nerve Net, Organ Culture Techniques, Synapses, Mice, Knockout, 6-Cyano-7-nitroquinoxaline-2,3-dione, Maze Learning, Receptor, Adenosine A2A, Mice, Adenosine A2 Receptor Antagonists

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