Male subfertility and oxidative stress

Area of Science:

• Reproductive biology
• Andrology
• Oxidative stress research

Background:

• Infertility affects 15% of couples, with male factors contributing 45-50%.
• Paternal age, environmental, and lifestyle factors exacerbate male infertility rates.
• Reactive oxygen species (ROS) are implicated in the free radical theory of infertility.

Purpose of the Study:

• To review the complex role of ROS in male fertility.
• To examine how lifestyle, age, and disease influence ROS levels.
• To discuss ROS measurement and mitigation strategies in assisted reproduction.

Main Methods:

• Literature review of scientific articles on ROS and male fertility.
• Analysis of studies investigating ROS production and effects in sperm.
• Examination of diagnostic methods for ROS assessment.
• Review of antioxidant strategies and in-vitro fertilization protocols.

Main Results:

• ROS have a biphasic effect: essential for sperm maturation at low levels, but detrimental at high concentrations.
• Elevated ROS levels correlate with impaired sperm parameters and male infertility.
• Factors like age, obesity, and environmental toxins increase oxidative stress in males.
• Specific assays can quantify ROS, and antioxidants can potentially improve outcomes.

Conclusions:

• ROS are critical mediators of male reproductive health and infertility.
• Managing oxidative stress through lifestyle changes or targeted therapies may improve fertility.
• Optimizing ROS levels is essential for successful in-vitro fertilization.