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Methods to Determine Oxidative Stress in Spermatozoa
Jacinta H Martin1,2, Leah Calvert3,4, Amanda L Anderson3,4
1School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW, Australia. jacinta.martin@newcastle.edu.au.
Methods in Molecular Biology (Clifton, N.J.)
|July 2, 2025
Summary
Assessing oxidative stress in sperm using Dihydroethidium and Mitosox Red assays offers insights into male reproductive health. These flow cytometry methods detect reactive oxygen species, aiding fertility research and treatments.
Area of Science:
- Reproductive Biology
- Cellular Physiology
- Biochemistry
Background:
- Elevated oxidative stress in spermatozoa compromises sperm function and is linked to male reproductive pathologies.
- Spermatozoa oxidative stress assessment offers insights into cellular and individual systemic health.
Purpose of the Study:
- To describe two flow cytometric assays, Dihydroethidium and Mitosox Red, for detecting reactive oxygen species in spermatozoa.
- To highlight the utility of these assays in reproductive health research and therapeutic development.
Main Methods:
- Utilized flow cytometry to detect reactive oxygen species (ROS).
- Employed Dihydroethidium assay for cytosolic ROS detection.
- Employed Mitosox Red assay for mitochondrial ROS detection in both mouse and human spermatozoa.
Main Results:
- Successfully demonstrated the capacity of Dihydroethidium and Mitosox Red assays to quantify ROS in spermatozoa.
- Validated assays for application in both mouse and human sperm samples.
Conclusions:
- Dihydroethidium and Mitosox Red assays are valuable tools for studying male germline health.
- These assays support research on reproductive aging, toxicants, environmental exposures, and fertility treatments, including assisted reproduction technologies.
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