Cited by 108Mitochondrial Function and PathologyNeurological Disorders and TreatmentsGlutathione Transferases and Polymorphisms

Resistance to cerebral ischemic injury in UCP2 knockout mice: evidence for a role of UCP2 as a regulator of mitochondrial glutathione levels

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De Bilbao, Fabienne, Arsenijevic, Denis, Vallet, Philippe, Hjelle, Ole Petter, Ottersen, Ole Petter, Bouras, Constantin, Raffin, Yvette, Abou, Karin +9 more·2004·Journal of Neurochemistry

Abstract

Uncoupling protein 2 (UCP2) is suggested to be a regulator of reactive oxygen species production in mitochondria. We performed a detailed study of brain injury, including regional and cellular distribution of UCP2 mRNA, as well as measures of oxidative stress markers following permanent middle cerebral artery occlusion in UCP2 knockout (KO) and wild‐type (WT) mice. Three days post ischemia, there was a massive induction of UCP2 mRNA confined to microglia in the peri‐infarct area of WT mice. KO mice were less sensitive to ischemia as assessed by reduced brain infarct size, decreased densities of deoxyuridine triphosphate nick end‐labelling (TUNEL)‐labelled cells in the peri‐infact area and lower levels of lipid peroxidation compared with WT mice. This resistance may be related to the substantial increase of basal manganese superoxide dismutase levels in neurons of KO mice. Importantly, we found a specific decrease of mitochondrial glutathione (GSH) levels in UCP2 expressing microglia of WT, but not in KO mice after ischemia. This specific association between UCP2 and mitochondrial GSH levels regulation was further confirmed using lipopolysaccharide models of peripheral inflammation, and in purified peritoneal macrophages. Moreover, our data imply that UCP2 is not directly involved in the regulation of ROS production but acts by regulating mitochondrial GSH levels in microglia.

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Crossref · 10.1111/j.1471-4159.2004.02432.x

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  • Knockout of UCP2 is protective in a model of cerebral ischemic injury.

    “Consistent with these latter findings, knockout of UCP2 was found to be protective in a model of cerebral ischemic injury (110).”

    From Redox regulation of mitochondrial function (2012) · cites this paper as [110]

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Authors
De Bilbao, F., Arsenijevic, D., Vallet, P., Hjelle, O. P., Ottersen, O. P., Bouras, C., Raffin, Y., Abou, K., Langhans, W., Collins, S., Plamondon, J., Alves‐Guerra, M., Haguenauer, A., Garcia, I., Richard, D., Ricquier, D., & Giannakopoulos, P.
Affiliations
  • ETH Zurich (CH)
  • University Hospital of Geneva (CH)
  • Duke University (US)
  • Université Laval (CA)
  • Centre National de la Recherche Scientifique (FR)
Corresponding author
Arsenijevic, Denis
Venue
Journal of Neurochemistry
Publisher
Wiley
Published
2004-04-26
Volume
89
Issue
5
Pages
1283-1292
ISSN
  • 0022-3042 (ISSN-L)
  • 1471-4159
OpenAlex
W2032327447
Cited by
108
References
61
Citations by year
2026: 2 · 2024: 3 · 2023: 2 · 2022: 3 · 2021: 3 · 2020: 1 · 2019: 4 · 2018: 2 · 2017: 2 · 2016: 1 · 2015: 8 · 2014: 9 · 2013: 5 · 2012: 6
FWCI
3.31
Type
journal article
Language
en
Open access
Locations
  • Journal of Neurochemistry (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
  • IRIS (submittedVersion)
  • SERVAL (Université de Lausanne) (submittedVersion)
  • Archive ouverte UNIGE (University of Geneva) (submittedVersion, cc-by)
  • Archive ouverte UNIGE (University of Geneva) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Neuroscience › Neurology › Neurological Disorders and Treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Glutathione Transferases and Polymorphisms
Keywords
UCP2, cerebral ischemia, middle cerebral artery occlusion, microglia, mitochondrial glutathione, oxidative stress, manganese superoxide dismutase, lipid peroxidation, neuroprotection, UCP2 knockout mice, lipopolysaccharide-induced inflammation, peritoneal macrophages, reactive oxygen species
MeSH terms
Uncoupling Protein 2, Animals, Antioxidants, Cell Count, Brain Ischemia, Disease Models, Animal, Glutathione, Ion Channels, Lipopolysaccharides, Male, Mitochondria, RNA, Messenger, Superoxide Dismutase, Microglia, Macrophages, Peritoneal, Mice, Knockout, Oxidative Stress, Genetic Predisposition to Disease, In Situ Nick-End Labeling, Protein Transport, Mitochondrial Proteins, Membrane Transport Proteins, Cytochromes c, Mice

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