Chronic exposure to a glyphosate-containing pesticide leads to mitochondrial dysfunction and increased reactive oxygen species production in Caenorhabditis elegans

Title

Chronic exposure to a glyphosate-containing pesticide leads to mitochondrial dysfunction and increased reactive oxygen species production in Caenorhabditis elegans

Creator

Bailey D C; Todt C E; Burchfield S L; Pressley A S; Denney R D; Snapp I B; Negga R; Traynor W L; Fitsanakis V A

Publisher

Environmental Toxicology and Pharmacology

Date

2018
2018-01

Description

Glyphosate-containing herbicides are among the most widely-used in the world. Although glyphosate itself is relatively non-toxic, growing evidence suggests that commercial herbicide formulations may lead to increased oxidative stress and mitochondrial inhibition. In order to assess these mechanisms in vivo, we chronically (24 h) exposed Caenorhabditis elegans to various concentrations of the glyphosate-containing herbicide TouchDown (TD). Following TD exposure, we evaluated the function of specific mitochondrial electron transport chain complexes. Initial oxygen consumption studies demonstrated inhibition in mid- and high-TD concentration treatment groups compared to controls. Results from tetramethylrhodamine ethyl ester and ATP assays indicated reductions in the proton gradient and ATP levels, respectively. Additional studies were designed to determine whether TD exposure resulted in increased reactive oxygen species (ROS) production. Data from hydrogen peroxide, but not superoxide or hydroxyl radical, assays showed statistically significant increases in this specific ROS. Taken together, these data indicate that exposure of Caenorhabditis elegans to TD leads to mitochondrial inhibition and hydrogen peroxide production.

Subject

C. elegans; Glyphosate; Hydrogen peroxide; Mitochondrial inhibition; oxidative stress; Toxicology; Environmental Sciences & Ecology; Pharmacology & Pharmacy; parkinsons-disease; brain; alzheimers-disease; mechanisms; degeneration; species; neurodegenerative diseases; 6-ohda; C. elegans; complex-i; Herbicide; Reactive oxygen

Format

Journal Article or Conference Abstract Publication

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Rights

Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).

Pages

46-52

Volume

57

Citation

Bailey D C; Todt C E; Burchfield S L; Pressley A S; Denney R D; Snapp I B; Negga R; Traynor W L; Fitsanakis V A, “Chronic exposure to a glyphosate-containing pesticide leads to mitochondrial dysfunction and increased reactive oxygen species production in Caenorhabditis elegans,” NEOMED Bibliography Database, accessed August 6, 2021, https://neomed.omeka.net/items/show/8538.

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