C. Elegans Oxidative Stress
C. Elegans Oxidative Stress - Related Videos
03:12
Visualizing Pathogen-Induced Oxidative Stress in C. elegans Using GFP-Tagged SKN-1
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2026
Source: Naji, A., et al. Studying Oxidative Stress Caused by the Mitis Group Streptococci in Caenorhabditis elegans. J. Vis. Exp. (2019)This video demonstrates the use of green fluorescent protein-tagged SKN-1 in C. elegans to monitor oxidative stress by tracking green fluorescence. Worms exposed to S. gordonii show strong nuclear fluorescence, confirming pathogen-induced stress, while those fed E. coli display diffuse green fluorescence in the cytoplasm, indicating minimal SKN-1 activation.
08:10
Measuring Oxidative Stress Resistance of Caenorhabditis elegans in 96-well Microtiter Plates
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Cited by 43 •
2015
C. elegans is an attractive model organism to study signal transduction pathways involved in oxidative stress resistance. Here we provide a protocol to measure oxidative stress resistance of C. elegans animals in liquid phase, using several oxidizing agents in 96 well plates.
11:05
Analysis of Oxidative Stress in Zebrafish Embryos
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Cited by 97 •
2014
Here we report a protocol to measure oxidative stress in living zebrafish embryos. This procedure allows reactive oxygen species (ROS) detection in both whole embryo tissues and single-cell populations. This protocol will accomplish both qualitative and quantitative analyses.
09:36
Studying Oxidative Stress Caused by the Mitis Group Streptococci in Caenorhabditis elegans
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Cited by 1 •
2019
The nematode Caenorhabditis elegans is an excellent model to dissect host-pathogen interactions. Described here is a protocol to infect the worm with members of the mitis group streptococci and determine activation of the oxidative stress response against H2O2 produced by this group of organisms.
08:23
Comet Assay as an Indirect Measure of Systemic Oxidative Stress
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Cited by 23 •
2015
Comet assay measures DNA breaks, induced by different factors. If all factors (except oxidative stress) causing DNA damage are kept constant, the amount of DNA damage is a good indirect parameter of oxidative stress. The goal of this protocol is to use comet assay for indirect measurement of oxidative stress.
FAQs
Superoxide dismutase and catalase help re-establish redox balance after ROS rise, but they represent different antioxidant defenses within the response. Examining these enzymes alongside a stressor can help investigators determine whether altered conditions are associated with an antioxidant response. This makes them useful mechanistic indicators in studies of cellular resilience.
Pro-oxidant chemicals increase oxidative pressure through an external challenge, whereas altered metabolism can change ROS production through the worm’s own cellular activity. Comparing these stress conditions helps separate effects caused by chemical exposure from those associated with metabolic change. That distinction is valuable when interpreting redox responses in toxicology and disease-related investigations.
Fluorescent reporters and survival assays capture different outcomes. Reporter measurements indicate how cells respond to oxidative stress, while survival assays show whether that stress is associated with loss of organismal viability. Using both approaches can connect a measurable redox response with a whole-animal outcome, strengthening interpretation of resilience rather than relying on one readout alone.
Redox regulation is relevant to aging because changes in ROS balance can be examined alongside lifespan, while cellular resilience reflects how well the organism responds to stress. In C. elegans, these relationships can be investigated within a model that has a short life cycle and defined genetics, allowing stress responses and longevity-related outcomes to be studied together.
A practical assessment can pair an oxidative-stress condition with two measurements: fluorescent reporters for the cellular response and a survival assay for the organismal outcome. Investigators can then relate the observed response to a condition involving a pro-oxidant chemical or altered metabolism. This paired design provides both cellular and survival-oriented information.
These studies suit questions in aging, toxicology, and disease-related biology where investigators need to examine how ROS, antioxidant defenses, lifespan, or cellular resilience are related. The model’s short life cycle and defined genetics make it practical for connecting controlled stress conditions with measurable biological outcomes, including responses detected by reporters and changes observed in survival.
Conserved stress-response pathways give findings in this nematode broader biological relevance, while defined genetics support analysis of how altered genes affect redox regulation. These features make C. elegans useful for examining relationships between oxidative stress, cellular resilience, and lifespan. Its short life cycle further supports studies that connect stress responses with aging-related outcomes.