Exercise and Oxidative Damage in Nucleoid DNA Quantified Using Single Cell Gel Electrophoresis: Present and Future
1Sport and Exercise Science Research Institute, Ulster University Belfast, UK.
Frontiers in Physiology
|July 23, 2016
Summary
High intensity exercise generates free radicals that can damage DNA. The comet assay offers a reliable method to measure this DNA damage and its repair, crucial for understanding exercise
Area of Science:
- Exercise Science
- Molecular Biology
- Genotoxicology
Background:
- High-intensity exercise increases reactive oxygen and nitrogen species.
- Cellular damage, including DNA modification, can occur without adequate DNA repair.
- This may lead to biological disorders and premature aging.
Purpose of the Study:
- To review advances in the comet assay for quantifying DNA damage and repair.
- To explore the relationship between exercise and DNA modification.
- To highlight the underutilization of the comet assay in exercise science.
Main Methods:
- The alkaline single-cell gel electrophoresis (comet assay) measures DNA stability.
- Comet assay combined with lesion-specific endonucleases quantifies DNA strand breaks and oxidized bases.
- Fluorescent in situ hybridization can detect genome-wide or gene-specific DNA damage.
Main Results:
- High-intensity exercise has been confirmed to damage and destabilize DNA.
- The comet assay is a reliable method for measuring DNA damage and repair.
- Current research has not fully integrated advanced comet assay techniques in exercise studies.
Conclusions:
- The comet assay is a valuable tool for studying exercise-induced DNA damage.
- Further research is needed to understand the complex interplay between exercise and DNA modification.
- Integrating advanced comet assay methods will enhance our understanding of exercise's impact on cellular integrity.
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