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Updated: Nov 20, 2025

Evaluation of Intracellular Location of Reactive Oxygen Species in Solea Senegalensis Spermatozoa
Published on: March 11, 2018
Oxidative stress and male infertility
Teppei Takeshima1, Kimitsugu Usui1, Kohei Mori1
1Department of Urology, Reproduction Center Yokohama City University Medical Center Yokohama city Japan.
Background:
Between 30% and 80% of patients with male infertility produce excessive reactive oxygen species (ROS) in their ejaculate even though the cause of male infertility is unexplained in approximately half of cases. The strong connection between oxidative stress (OS) and male infertility has led recent investigators to propose the term "Male Oxidative Stress Infertility (MOSI)" to describe OS-associated male infertility.
Methods:
We searched the PubMed database for original and review articles to survey the effects of OS on male infertility, and then verified the effects and treatments.
Main Findings:
Seminal plasma contains many antioxidants that protect sperm from ROS, because low amounts of ROS are required in the physiological fertilization process. The production of excessive ROS causes OS which can lower fertility through lipid peroxidation, sperm DNA damage, and apoptosis. Several assays are available for evaluating OS, including the MiOXSYS® analyzer to measure oxidation-reduction potential. Several measures should be considered for minimizing OS and improving clinical outcomes.
Conclusion:
Accurately diagnosing patients with MOSI and identifying highly sensitive biomarkers through proteomics technology is vital for better clinical outcomes.
Insights
Male infertility is often linked to excessive reactive oxygen species (ROS), termed Male Oxidative Stress Infertility (MOSI). Minimizing oxidative stress and diagnosing MOSI are key to improving fertility outcomes.
Area of Science:
- Reproductive biology
- Andrology
- Biochemistry
Background:
- 30-80% of male infertility cases involve excessive reactive oxygen species (ROS) in ejaculate.
- Male infertility cause remains unexplained in approximately 50% of cases.
- Oxidative stress (OS) is strongly linked to male infertility, leading to the proposed term Male Oxidative Stress Infertility (MOSI).
Purpose of the Study:
- To survey the effects of OS on male infertility.
- To verify the effects and treatments of OS in male infertility.
- To highlight the importance of diagnosing MOSI for better clinical outcomes.
Main Methods:
- PubMed database search for original and review articles.
- Survey of existing literature on OS and male infertility.
- Verification of OS effects and potential treatments.
Main Results:
- Seminal plasma antioxidants protect sperm from ROS; low ROS levels are essential for fertilization.
- Excessive ROS production causes OS, leading to lipid peroxidation, sperm DNA damage, and apoptosis, thus reducing fertility.
- Assays like MiOXSYS® can evaluate OS; minimizing OS is crucial for improving clinical outcomes.
Conclusions:
- Accurate diagnosis of MOSI is vital for effective treatment.
- Identifying sensitive biomarkers through proteomics technology is essential for improved clinical outcomes in male infertility.
- Addressing OS is critical for managing and treating male infertility.
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