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Oxidative stress in an assisted reproductive techniques setting
Ashok Agarwal1, Tamer M Said, Mohamed A Bedaiwy
1Center for Advanced Research in Human Reproduction, Infertility and Sexual Function, Glickman Urological Institute and Department of Obstetrics-Gynecology, Cleveland Clinic Foundation, Cleveland, Ohio 44195, USA. agarwaa@ccf.org
Fertility and Sterility
|July 25, 2006
Summary
Assisted reproductive techniques (ART) can increase reactive oxygen species (ROS), leading to oxidative stress and potential damage to gametes and embryos. Modifying ART conditions can help reduce these harmful effects and improve outcomes.
Area of Science:
- Reproductive biology
- Cellular physiology
Background:
- Assisted reproductive techniques (ART) involve in vitro manipulation of gametes and embryos.
- ART procedures can expose reproductive cells to supraphysiological levels of reactive oxygen species (ROS).
Purpose of the Study:
- To inform ART personnel about oxidative stress development in ART settings.
- To detail ROS sources, mechanisms of damage, and impact on ART outcomes.
- To discuss strategies for preventing oxidative stress during ART.
Main Methods:
- Comprehensive review of international scientific literature.
- Information presented in a question-and-answer format for clarity.
Main Results:
- In vitro conditions (higher pO2) increase ROS production compared to in vivo.
- Elevated ROS levels without adequate antioxidant defenses cause oxidative stress.
- Oxidative stress leads to cellular damage (lipid, protein, DNA) and potentially reduces ART success rates.
Conclusions:
- ART settings present modifiable conditions that contribute to ROS toxicity.
- Implementing preventative strategies can mitigate the adverse effects of ROS on ART outcomes.