Cited by 247Redox biology and oxidative stressNeuroscience and Neuropharmacology ResearchGlutathione Transferases and Polymorphisms

Antioxidant and bioenergetic coupling between neurons and astrocytes

Fernandez-Fernandez, Seila, Almeida, Angeles, Bolaños, Juan P.·2012·Biochemical Journal

Abstract

Oxidative and nitrosative stress underlie the pathogenesis of a broad range of human diseases, in particular neurodegenerative disorders. Within the brain, neurons are the cells most vulnerable to excess reactive oxygen and nitrogen species; their survival relies on the antioxidant protection promoted by neighbouring astrocytes. However, neurons are also intrinsically equipped with a biochemical mechanism that links glucose metabolism to antioxidant defence. Neurons actively metabolize glucose through the pentose phosphate pathway, which maintains the antioxidant glutathione in its reduced state, hence exerting neuroprotection. This process is tightly controlled by a key glycolysis-promoting enzyme and is dependent on an appropriate supply of energy substrates from astrocytes. Thus brain bioenergetic and antioxidant defence is coupled between neurons and astrocytes. A better understanding of the regulation of this intercellular coupling should be important for identifying novel targets for future therapeutic interventions.

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Crossref · 10.1042/bj20111943

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161 of 161 references verified0 citation errors · 0 not checkable

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  • GSH levels are lower in chronic schizophrenia as measured in CSF, post-mortem brain, and by MRS-based in vivo imaging, and the GSH system enzymes GPX and GR are dysregulated.

    “GSH levels have been shown to be lower in chronic schizophrenia, as measured in the CSF and post-mortem brain, and by MRS-based in vivo imaging 41,42 and the GSH system enzymes glutathione peroxidase (GPX) and glutathione reductase (GR) are also dysregulated 36 .”
  • Evidence for oxidative stress has been found in patients with schizophrenia, including increased lipid and protein oxidation in blood, CSF and post-mortem tissue, altered plasma antioxidants, and altered CSF superoxide dismutase-1 levels.

    “Evidence for oxidative stress has been found in patients with schizophrenia, including increased lipid and protein oxidation in blood, cerebrospinal fluid (CSF) and post-mortem tissue 36,37 , as well as altered levels of plasma antioxidants (such as vitamins C and E, catalase, GSH and GSH-peroxidase) 36,38 and CSF superoxide dismutase-1 levels 39 .”

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Authors
Fernandez-Fernandez, S., Almeida, A., & Bolaños, J. P.
Affiliations
  • Department of Biochemistry and Molecular Biology, Institute of Neurosciences of Castilla y León, University of Salamanca, Salamanca 37007, Spain
  • Universidad de Salamanca (ES)
Venue
Biochemical Journal
Published
2012-03-14
Volume
443
Issue
1
Pages
3-11
ISSN
  • 0264-6021 (ISSN-L)
  • 1470-8728
OpenAlex
W2005896958
Cited by
247
References
161
Citations by year
2026: 4 · 2025: 6 · 2024: 9 · 2023: 19 · 2022: 20 · 2021: 20 · 2020: 25 · 2019: 12 · 2018: 18 · 2017: 17 · 2016: 20 · 2015: 26 · 2014: 19 · 2013: 24 · 2012: 7
FWCI
2.22
Type
journal article
Language
en
Open access
closed
Locations
  • Biochemical Journal (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Glutathione Transferases and Polymorphisms
Keywords
astrocytes, neurons, oxidative stress, nitrosative stress, reactive oxygen species, reactive nitrogen species, pentose phosphate pathway, glutathione, glucose metabolism, bioenergetics, neuroprotection, neurodegenerative diseases, glycolysis
MeSH terms
Animals, Antioxidants, Astrocytes, Energy Metabolism, Glutathione, Humans, Neurons, Oxidation-Reduction, Oxidative Stress, Carbohydrate Metabolism

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