Cited by 145Parkinson's Disease Mechanisms and TreatmentsRedox biology and oxidative stressGlutathione Transferases and Polymorphisms

Inducible Alterations of Glutathione Levels in Adult Dopaminergic Midbrain Neurons Result in Nigrostriatal Degeneration

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Chinta, Shankar J., Kumar, M. J., Hsu, Michael, Rajagopalan, Subramanian, Kaur, Deepinder, Rane, Anand, Nicholls, David G., Choi, Jinah +1 more·2007·The Journal of Neuroscience

Abstract

Parkinson's disease is a neurodegenerative disorder characterized by the preferential loss of midbrain dopaminergic neurons in the substantia nigra (SN). One of the earliest detectable biochemical alterations that occurs in the Parkinsonian brain is a marked reduction in SN levels of total glutathione (glutathione plus glutathione disulfide), occurring before losses in mitochondrial complex I (CI) activity, striatal dopamine levels, or midbrain dopaminergic neurodegeneration associated with the disease. Previous in vitro data from our laboratory has suggested that prolonged depletion of dopaminergic glutathione results in selective impairment of mitochondrial complex I activity through a reversible thiol oxidation event. To address the effects of depletion in dopaminergic glutathione levels in vivo on the nigrostriatal system, we created genetically engineered transgenic mouse lines in which expression of γ-glutamyl cysteine ligase, the rate-limiting enzyme in de novo glutathione synthesis, can be inducibly downregulated in catecholaminergic neurons, including those of the SN. A novel method for isolation of purified dopaminergic striatal synaptosomes was used to study the impact of dopaminergic glutathione depletion on mitochondrial events demonstrated previously to occur in vitro as a consequence of this alteration. Dopaminergic glutathione depletion was found to result in a selective reversible thiol-oxidation-dependent mitochondrial complex I inhibition, followed by an age-related nigrostriatal neurodegeneration. This suggests that depletion in glutathione within dopaminergic SN neurons has a direct impact on mitochondrial complex I activity via increased nitric oxide-related thiol oxidation and age-related dopaminergic SN cell loss.

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Crossref · 10.1523/jneurosci.3885-07.2007

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  • In glutathione-depleted dopaminergic cells, prevention of mitochondrial complex I inhibition can be achieved by application of nitric oxide synthase inhibitors reducing formation of nitric oxide.

    “It has been reported that in glutathione-depleted dopaminergic cells, prevention of mitochondrial complex I inhibition can be achieved by the application of nitric oxide synthase inhibitors (NOS) reducing thus the formation of nitric oxide (Chinta et al. 2007).”

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Authors
Chinta, S. J., Kumar, M. J., Hsu, M., Rajagopalan, S., Kaur, D., Rane, A., Nicholls, D. G., Choi, J., & Andersen, J. K.
Affiliations
  • Buck Institute for Research on Aging (US)
  • University of California, Merced (US)
Corresponding author
Andersen, Julie K.
Venue
The Journal of Neuroscience
Published
2007-12-19
Volume
27
Issue
51
Pages
13997-14006
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2054648332
Cited by
145
References
49
Citations by year
2026: 3 · 2025: 1 · 2024: 7 · 2023: 7 · 2022: 1 · 2021: 4 · 2020: 8 · 2019: 9 · 2018: 5 · 2017: 6 · 2016: 11 · 2015: 12 · 2014: 9 · 2013: 10 · 2012: 8
FWCI
7.61
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Institute on Aging (R01AG012141, AG-12141, R29AG012141)
Topics
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Glutathione Transferases and Polymorphisms
Keywords
Parkinson's disease, glutathione depletion, dopaminergic neurons, substantia nigra, nigrostriatal degeneration, mitochondrial complex I inhibition, thiol oxidation, nitric oxide, transgenic mice, striatal synaptosomes, age-related neurodegeneration
MeSH terms
Age Factors, Animals, Cell Survival, Corpus Striatum, Dopamine, Glutathione, Mesencephalon, Mice, Inbred C57BL, Mice, Transgenic, Nerve Degeneration, Neurons, Substantia Nigra, Mice

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