Cited by 1,111Parkinson's Disease Mechanisms and TreatmentsRedox biology and oxidative stressGlutathione Transferases and Polymorphisms

Mice deficient in cellular glutathione peroxidase show increased vulnerability to malonate, 3-nitropropionic acid, and 1-methyl-4-phenyl-1,2,5,6-tetrahydropyridine

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Klivenyi, Peter, Andreassen, Ole A., Ferrante, Robert J., Dedeoglu, Alpaslan, Mueller, Gerald, Lancelot, Eric, Bogdanov, Mikhail, Andersen, Julie K. +2 more·2000·The Journal of Neuroscience

Abstract

Glutathione peroxidase (GSHPx) is a critical intracellular enzyme involved in detoxification of hydrogen peroxide (H(2)O(2)) to water. In the present study we examined the susceptibility of mice with a disruption of the glutathione peroxidase gene to the neurotoxic effects of malonate, 3-nitropropionic acid (3-NP), and 1-methyl-4-phenyl-1,2,5,6-tetrahydropyridine (MPTP). Glutathione peroxidase knock-out mice showed no evidence of neuropathological or behavioral abnormalities at 2-3 months of age. Intrastriatal injections of malonate resulted in a significant twofold increase in lesion volume in homozygote GSHPx knock-out mice as compared to both heterozygote GSHPx knock-out and wild-type control mice. Malonate-induced increases in conversion of salicylate to 2,3- and 2, 5-dihydroxybenzoic acid, an index of hydroxyl radical generation, were greater in homozygote GSHPx knock-out mice as compared with both heterozygote GSHPx knock-out and wild-type control mice. Administration of MPTP resulted in significantly greater depletions of dopamine, 3,4-dihydroxybenzoic acid, and homovanillic acid in GSHPx knock-out mice than those seen in wild-type control mice. Striatal 3-nitrotyrosine (3-NT) concentrations after MPTP were significantly increased in GSHPx knock-out mice as compared with wild-type control mice. Systemic 3-NP administration resulted in significantly greater striatal damage and increases in 3-NT in GSHPx knock-out mice as compared to wild-type control mice. The present results indicate that a knock-out of GSHPx may be adequately compensated under nonstressed conditions, but that after administration of mitochondrial toxins GSHPx plays an important role in detoxifying increases in oxygen radicals.

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Authors
Klivenyi, P., Andreassen, O. A., Ferrante, R. J., Dedeoglu, A., Mueller, G., Lancelot, E., Bogdanov, M., Andersen, J. K., Jiang, D., & Beal, M. F.
Affiliations
  • Harvard University (US)
  • Boston University (US)
  • University of Southern California (US)
Venue
The Journal of Neuroscience
Published
2000-01-01
Volume
20
Issue
1
Pages
1-7
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W1946022517
Cited by
1,111
References
60
Citations by year
2026: 1 · 2025: 8 · 2024: 9 · 2023: 6 · 2022: 11 · 2021: 8 · 2020: 20 · 2019: 20 · 2018: 20 · 2017: 30 · 2016: 37 · 2015: 35 · 2014: 38 · 2013: 48 · 2012: 32
FWCI
59.60
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5p01ns031579-05, NS31579)
  • National Institute of Neurological Disorders and Stroke (NS10828, F32NS010828, NS 16367, NS31579, P50NS016367, P50NS010828, P01NS010828)
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
glutathione peroxidase, malonate, 3-nitropropionic acid, MPTP, neurotoxicity, oxidative stress, hydroxyl radicals, dopamine depletion, nitrotyrosine, striatal lesions, mitochondrial toxins, hydrogen peroxide detoxification, salicylate metabolism
MeSH terms
Animals, Brain Chemistry, Catechols, Convulsants, Corpus Striatum, Disease Models, Animal, Female, Free Radicals, Glutathione, Glutathione Peroxidase, Heterozygote, Homovanillic Acid, Homozygote, Huntington Disease, Male, Malonates, Mice, Inbred Strains, Nitro Compounds, Parkinson Disease, Secondary, Propionates, Tyrosine, 3,4-Dihydroxyphenylacetic Acid, Dopamine Agents, 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine, Mice, Knockout, Oxidative Stress, MPTP Poisoning, Mice

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