Cited by 241Neuroinflammation and Neurodegeneration MechanismsNeuroscience and Neuropharmacology ResearchNeurogenesis and neuroplasticity mechanisms

How microglia sense and regulate neuronal activity

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Umpierre, Anthony D., Wu, Long‐Jun·2021·Glia

Abstract

Microglia are innate immune cells of the central nervous system that sense extracellular cues. Brain injuries, inflammation, and pathology evoke dynamic structural responses in microglia, altering their morphology and motility. The dynamic motility of microglia is hypothesized to be a critical first step in sensing local alterations and engaging in pattern-specific responses. Alongside their pathological responses, microglia also sense and regulate neuronal activity. In this review, we consider the extracellular molecules, receptors, and mechanisms that allow microglia to sense neuronal activity changes under both hypoactivity and hyperactivity. We also highlight emerging in vivo evidence that microglia regulate neuronal activity, ranging from physiological to pathophysiological conditions. In addition, we discuss the emerging role of calcium signaling in microglial responses to the extracellular environment. The dynamic function of microglia in monitoring and influencing neuronal activity may be critical for brain homeostasis and circuit modification in health and disease.

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Authors
Umpierre, A. D., & Wu, L.
Affiliations
Mayo Clinic (US)
Corresponding author
Wu, Long‐Jun
Venue
Glia
Publisher
Wiley
Published
2020-12-28
Volume
69
Issue
7
Pages
1637-1653
ISSN
  • 0894-1491 (ISSN-L)
  • 1098-1136
OpenAlex
W3115061260
Cited by
237
References
137
Citations by year
2026: 36 · 2025: 62 · 2024: 52 · 2023: 44 · 2022: 28 · 2021: 14
FWCI
2.24
Type
journal article
Language
en
Open access
Locations
  • Glia (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute of Neurological Disorders and Stroke (NS088627, NS110825, NS110949, NS112144, NS114040)
  • National Institute on Aging (AG064159)
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
Keywords
microglia, microglial motility, microglial morphology, microglial receptors, calcium signaling, neuronal hyperactivity, brain homeostasis, neuroinflammation, circuit modification
MeSH terms
Brain, Central Nervous System, Neurons, Microglia, Calcium Signaling

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