Cited by 130Schizophrenia research and treatmentRedox biology and oxidative stressTryptophan and brain disorders

Redox Dysregulation in the Pathophysiology of Schizophrenia and Bipolar Disorder: Insights from Animal Models

Kulak, Anita, Steullet, Pascal, Cabungcal, Jan-Harry, Werge, Thomas, Ingason, Andrés, Cuenod, Michel, Do, Kim Quang·2013·Antioxidants & Redox Signaling

Abstract

SIGNIFICANCE: Schizophrenia (SZ) and bipolar disorder (BD) are classified as two distinct diseases. However, accumulating evidence shows that both disorders share genetic, pathological, and epidemiological characteristics. Based on genetic and functional findings, redox dysregulation due to an imbalance between pro-oxidants and antioxidant defense mechanisms has been proposed as a risk factor contributing to their pathophysiology. RECENT ADVANCES: Altered antioxidant systems and signs of increased oxidative stress are observed in peripheral tissues and brains of SZ and BD patients, including abnormal prefrontal levels of glutathione (GSH), the major cellular redox regulator and antioxidant. Here we review experimental data from rodent models demonstrating that permanent as well as transient GSH deficit results in behavioral, morphological, electrophysiological, and neurochemical alterations analogous to pathologies observed in patients. Mice with GSH deficit display increased stress reactivity, altered social behavior, impaired prepulse inhibition, and exaggerated locomotor responses to psychostimulant injection. These behavioral changes are accompanied by N-methyl-D-aspartate receptor hypofunction, elevated glutamate levels, impairment of parvalbumin GABA interneurons, abnormal neuronal synchronization, altered dopamine neurotransmission, and deficient myelination. CRITICAL ISSUES: Treatment with the GSH precursor and antioxidant N-acetylcysteine normalizes some of those deficits in mice, but also improves SZ and BD symptoms when given as adjunct to antipsychotic medication. FUTURE DIRECTIONS: These data demonstrate the usefulness of GSH-deficient rodent models to identify the mechanisms by which a redox imbalance could contribute to the development of SZ and BD pathophysiologies, and to develop novel therapeutic approaches based on antioxidant and redox regulator compounds.

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Crossref · 10.1089/ars.2012.4858

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  • PNNs consist of highly charged chondroitin sulfate proteoglycans, hyaluronan, tenascin, and link proteins.

    “These PNNs consist of highly charged chondroitin sulfate proteoglycans (e.g., aggrecan, neurocan, brevican), hyaluronan, tenascin, and link proteins (31).”
  • Multiple genetic and external factors collectively lead to redox dysregulation.

    “several divergent genetic (e.g. Gclc, Gclm, Disc1, PRODH, G72, NRG1) (9–17) or external factors (e.g. stress, social isolation, ketamine, neonatal ventral hippocampal lesion) (18–24) collectively lead to redox dysregulation.”
  • A pharmacologically induced transient postnatal glutathione deficit causes both immediate and long-term decreased density of parvalbumin-immunoreactive cells in the anterior cingulate cortex.

    “A pharmacologically induced transient postnatal deficit in GSH causes both immediate and long-term decreased density of parvalbumin-immunoreactive cells in the anterior cingulate cortex (ACC) (Cabungcal et al., 2006; Kulak et al., 2013; Steullet et al., 2011).”
  • This oligodendrocyte deficit recovers in adulthood and is accompanied by an increase in prefrontal N-acetylaspartate, suggesting impaired myelin lipid synthesis during prefrontal cortical maturation.

    “This deficit, which recovers in adulthood, is accompanied by an increase in prefrontal N-acetylaspartate (das Neves Duarte et al., 2012), suggesting an impaired myelin lipid synthesis during prefrontal cortical maturation (Kulak et al., 2013).”
  • Other systems, such as the dopamine system, and their reciprocal interactions with the proposed hub certainly participate in schizophrenia pathology.

    “Moreover, we have to emphasize that other systems such as the dopamine system known to be implicated in schizophrenia and their reciprocal interactions with the proposed “hub” (see: Avshalumov et al., 2007; Baker et al., 2002; Kulak et al., 2013; Lodge and Grace, 2011; Meiser et al., 2013; Meyer and Feldon, 2009; Moller et al., 2013; Steullet et al., 2008) certainly participate to the pathology.”

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Authors
Kulak, A., Steullet, P., Cabungcal, J.-H., Werge, T., Ingason, A., Cuenod, M., & Do, K. Q.
Affiliations
  • Centre Hospitalier Universitaire Vaudois (CH)
  • Sankt Hans Hospital (DK)
  • Department of Psychiatry, Center for Psychiatric Neuroscience, Lausanne University Hospital, Prilly-Lausanne, Switzerland.
Venue
Antioxidants & Redox Signaling
Published
2013-04-20
Volume
18
Issue
12
Pages
1428-1443
ISSN
  • 1523-0864 (ISSN-L)
  • 1557-7716
OpenAlex
W2105730072
Cited by
124
References
128
Citations by year
2026: 6 · 2025: 7 · 2024: 6 · 2023: 6 · 2022: 8 · 2021: 11 · 2020: 7 · 2019: 9 · 2018: 3 · 2017: 14 · 2016: 8 · 2015: 16 · 2014: 15 · 2013: 7
FWCI
1.64
Type
journal article
Language
en
Open access
closed
Locations
  • Antioxidants and Redox Signaling (publishedVersion)
  • PubMed (publishedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (publishedVersion)
  • IRIS (submittedVersion)
  • SERVAL (Université de Lausanne) (submittedVersion)
Funders
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
Keywords
schizophrenia, bipolar disorder, redox dysregulation, oxidative stress, glutathione deficiency, NMDA receptor hypofunction, glutamate excitotoxicity, parvalbumin interneurons, prepulse inhibition, stress reactivity, dopamine signaling, myelination, N-acetylcysteine, antioxidant therapy
MeSH terms
Animals, Bipolar Disorder, Brain, Disease Models, Animal, Glutamate-Cysteine Ligase, Glutathione, Humans, Synaptic Transmission, Oxidation-Reduction, Schizophrenia, Polymorphism, Single Nucleotide, Gene Knockout Techniques

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