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Related Experiment Video

Updated: Jun 1, 2026

Measuring Caenorhabditis elegans Life Span in 96 Well Microtiter Plates

Measuring Caenorhabditis elegans Life Span in 96 Well Microtiter Plates

Published on: March 18, 2011

Extending life span by increasing oxidative stress.

Michael Ristow¹, Sebastian Schmeisser

¹Department of Human Nutrition, Institute of Nutrition, University of Jena, D-07743 Jena, Germany. mr@mristow.org

Free Radical Biology & Medicine

|May 31, 2011

Summary

This summary is machine-generated.

Longevity interventions activate mitochondria, increasing reactive oxygen species (ROS) which act as signals for stress resistance and longer life. Antioxidants blocking ROS hinder these benefits, challenging aging theories.

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Last Updated: Jun 1, 2026

Measuring Caenorhabditis elegans Life Span in 96 Well Microtiter Plates

Measuring Caenorhabditis elegans Life Span in 96 Well Microtiter Plates

Published on: March 18, 2011

Measuring Oxidative Stress Resistance of Caenorhabditis elegans in 96-well Microtiter Plates

Measuring Oxidative Stress Resistance of Caenorhabditis elegans in 96-well Microtiter Plates

Published on: May 9, 2015

Area of Science:

Gerontology
Mitochondrial Biology
Cellular Signaling

Background:

Life span extension is observed across species with various interventions.
Mitochondrial oxygen consumption and ROS production are implicated in aging.
Harman's Free Radical Theory of Aging posits ROS cause damage.

Purpose of the Study:

To review evidence linking longevity interventions to mitochondrial hormesis.
To explore the role of ROS as signaling molecules in aging.
To challenge the traditional view of ROS as solely detrimental.

Main Methods:

Literature review of studies on longevity interventions.
Analysis of findings related to mitochondrial oxygen consumption and ROS.
Synthesis of evidence on antioxidant effects on longevity interventions.

Main Results:

Longevity interventions activate mitochondrial oxygen consumption, increasing ROS.
ROS act as signaling molecules inducing endogenous defense mechanisms.
Antioxidants interfere with the life-extending effects of calorie restriction and exercise.

Conclusions:

Mitohormesis, involving ROS signaling, promotes stress resistance and longevity.
ROS are essential signaling molecules for metabolic health and longevity.
Findings question the Free Radical Theory of Aging, suggesting a pro-longevity role for ROS.