Cited by 584Tryptophan and brain disordersNeuroinflammation and Neurodegeneration MechanismsNeuroscience and Neuropharmacology Research

Inflammation, glutamate, and glia: a trio of trouble in mood disorders

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Haroon, Ebrahim, Miller, Andrew H, Sanacora, Gerard·2017·Neuropsychopharmacology

Abstract

Increasing data indicate that inflammation and alterations in glutamate neurotransmission are two novel pathways to pathophysiology in mood disorders. The primary goal of this review is to illustrate how these two pathways may converge at the level of the glia to contribute to neuropsychiatric disease. We propose that a combination of failed clearance and exaggerated release of glutamate by glial cells during immune activation leads to glutamate increases and promotes aberrant extrasynaptic signaling through ionotropic and metabotropic glutamate receptors, ultimately resulting in synaptic dysfunction and loss. Furthermore, glutamate diffusion outside the synapse can lead to the loss of synaptic fidelity and specificity of neurotransmission, contributing to circuit dysfunction and behavioral pathology. This review examines the fundamental role of glia in the regulation of glutamate, followed by a description of the impact of inflammation on glial glutamate regulation at the cellular, molecular, and metabolic level. In addition, the role of these effects of inflammation on glia and glutamate in mood disorders will be discussed along with their translational implications.

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Authors
Haroon, E., Miller, A. H., & Sanacora, G.
Affiliations
  • Emory University (US)
  • Yale University (US)
Corresponding author
Haroon, Ebrahim
Venue
Neuropsychopharmacology
Published
2016-09-15
Volume
42
Issue
1
Pages
193-215
ISSN
  • 0893-133X (ISSN-L)
  • 1740-634X
OpenAlex
W2519381186
Cited by
584
References
46
Citations by year
2026: 82 · 2025: 85 · 2024: 84 · 2023: 74 · 2022: 66 · 2021: 63 · 2020: 57 · 2019: 34 · 2018: 27 · 2017: 11 · 2016: 1
FWCI
1.46
Type
journal article
Language
en
Open access
Locations
  • Neuropsychopharmacology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • AstraZeneca
  • State of Connecticut Department of Mental Health and Addiction Services
  • National Alliance for Research on Schizophrenia and Depression
  • Servier
  • Allergan
  • National Center for PTSD, U.S. Department of Veterans Affairs
  • National Institute of Mental Health (R03MH100273, R01MH107033, R01MH087604, K23MH091254)
Topics
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
mood disorders, neuroinflammation, glutamate, glial cells, metabotropic glutamate receptors, ionotropic glutamate receptors, synaptic dysfunction, immune activation, glutamate clearance, synaptic loss, circuit dysfunction
MeSH terms
Animals, Humans, Inflammation, Synaptic Transmission, Neuroglia, Signal Transduction, Glutamic Acid, Mood Disorders

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