Role of astrocytes in manganese mediated neurotoxicity

Marta Sidoryk-Wegrzynowicz, Michael Aschner

Research output: Contribution to journalReview article

64 Scopus citations

Abstract

Astrocytes are responsible for numerous aspects of metabolic support, nutrition, control of the ion and neurotransmitter environment in central nervous system (CNS). Failure by astrocytes to support essential neuronal metabolic requirements plays a fundamental role in the pathogenesis of brain injury and the ensuing neuronal death. Astrocyte-neuron interactions play a central role in brain homeostasis, in particular via neurotransmitter recycling functions. Disruption of the glutamine (Gln)/glutamate (Glu) -γ-aminobutyric acid (GABA) cycle (GGC) between astrocytes and neurons contributes to changes in Glu-ergic and/or GABA-ergic transmission, and is associated with several neuropathological conditions, including manganese (Mn) toxicity. In this review, we discuss recent advances in support of the important roles for astrocytes in normal as well as neuropathological conditions primarily those caused by exposure to Mn.

Original languageEnglish (US)
Article number23
JournalBMC Pharmacology and Toxicology
Volume14
DOIs
StatePublished - Apr 18 2013
Externally publishedYes

Keywords

  • Astrocytes
  • Glutamate (Glu)
  • Glutamine (Gln)
  • Manganese (Mn)
  • Neurodegeneration
  • Neurotransmission
  • PKC signaling
  • Transporter
  • Ubiquitin-mediated proteolytic system

ASJC Scopus subject areas

  • Pharmacology
  • Pharmacology (medical)

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