Cited by 248Paraquat toxicity studies and treatmentsCoenzyme Q10 studies and effectsParkinson's Disease Mechanisms and Treatments

Paraquat induces oxidative stress and neuronal cell death; neuroprotection by water-soluble Coenzyme Q10

McCarthy, S., Somayajulu, M., Sikorska, M., Borowy-Borowski, H., Pandey, S.·2004·Toxicology and Applied Pharmacology

Abstract

Neuronal cell death induced by oxidative stress is correlated with numerous neurodegenerative diseases, including Alzheimer's disease (AD), Parkinson's disease (PD), and stroke. The causes of sporadic forms of age-related neurodegenerative diseases are still unknown. Recently, a correlation between paraquat exposure and neurodegenerative diseases has been observed. Paraquat, a nonselective herbicide, was once widely used in North America and is still routinely used in Taiwan. We have used differentiated Human Neuroblastoma (SHSY-5Y) cells as an in vitro model to study the mechanism of cell death induced by paraquat. We observed that paraquat-induced oxidative stress in differentiated SHSY-5Y cells as indicated by an increase in the production of cellular reactive oxygen species (ROS). Furthermore, apoptosis was evident as indicated by cellular and nuclear morphology and DNA fragmentation. Interestingly, pretreatment of SHSY-5Y cells with water-soluble Coenzyme Q10 (CoQ10) before paraquat exposure inhibited ROS generation. Pretreatment with CoQ10 also significantly reduced the number of apoptotic cells and DNA fragmentation. We also analyzed the effect of paraquat and CoQ10 on isolated mitochondria. Our results indicated that treatment with paraquat induced the generation of ROS from isolated mitochondria and depolarization of the inner mitochondrial membrane. Pretreatment with CoQ10 was able to inhibit ROS generation from isolated mitochondria as well as the collapse of mitochondrial membrane potential. Our results indicate that water-soluble CoQ10 can prevent oxidative stress and neuronal damage induced by paraquat and therefore, can be used for the prevention and therapy of neurodegenerative diseases caused by environmental toxins.

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Crossref · 10.1016/j.taap.2004.04.019

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  • CoQ10 protects against paraquat and rotenone induced mitochondrial dysfunction and neuronal cell death in human neuroblastoma (SHSY-5Y) cells and primary rat mesencephalic neurons respectively.

    “It protects against paraquat and rotenone induced mitochondrial dysfunction and neuronal cell death in human neuroblastoma (SHSY-5Y) cells and primary rat mesencephalic neurons respectively140, 141.”

    From Mitochondrial Approaches for Neuroprotection (2008) · cites this paper as [140]

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Authors
McCarthy, S., Somayajulu, M., Sikorska, M., Borowy-Borowski, H., & Pandey, S.
Affiliations
  • University of Windsor (CA)
  • National Research Council Canada (CA)
Corresponding author
Pandey, S.
Venue
Toxicology and Applied Pharmacology
Publisher
Elsevier BV
Published
2004-11
Volume
201
Issue
1
Pages
21-31
ISSN
0041-008X (ISSN-L)
OpenAlex
W1975416756
Cited by
248
References
34
Citations by year
2026: 3 · 2025: 10 · 2024: 4 · 2023: 8 · 2022: 12 · 2021: 16 · 2020: 10 · 2019: 18 · 2018: 9 · 2017: 16 · 2016: 13 · 2015: 9 · 2014: 8 · 2013: 10 · 2012: 13
FWCI
10.74
Type
journal article
Language
en
Open access
closed
Locations
  • Toxicology and Applied Pharmacology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Surgery › Paraquat toxicity studies and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Coenzyme Q10 studies and effects
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
Keywords
paraquat, oxidative stress, neuronal cell death, apoptosis, coenzyme Q10, neuroprotection, reactive oxygen species, mitochondrial depolarization, mitochondrial membrane potential, neurodegenerative diseases, herbicide neurotoxicity, SH-SY5Y cells, DNA fragmentation
MeSH terms
Cells, Cultured, Coenzymes, Herbicides, Humans, Mitochondria, Neuroblastoma, Neurons, Paraquat, Ubiquinone, Lipid Peroxidation, Apoptosis, Oxidative Stress, Neurotoxicity Syndromes, Comet Assay

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