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Analysis of Oxidative Stress in Zebrafish Embryos
Published on: July 7, 2014
Shear stress, reactive oxygen species, and arterial structure and function
Hanke L Matlung1, Erik N T P Bakker, Ed VanBavel
1Department of Biomedical Engineering and Physics, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
Antioxidants & Redox Signaling
|February 4, 2009
Summary
Endothelium-derived reactive oxygen species (ROS) mediate shear-dependent arterial tone and remodeling, particularly in small arteries. Future research should investigate hydrogen peroxide (H2O2) as a key factor in vascular regulation.
Area of Science:
- Cardiovascular Physiology
- Vascular Biology
- Biomedical Engineering
Background:
- Shear stress significantly influences small artery tone and structure.
- Nitric oxide (NO) is a primary endothelium-derived factor regulating vascular caliber.
- Other endothelium-derived mechanisms, including reactive oxygen species (ROS), also play a role.
Purpose of the Study:
- To review evidence for endothelium-derived ROS mediating shear-dependent arterial tone and remodeling.
- To examine shear-stress levels and profiles in the arterial system.
- To explore the relationship between microvascular tone, remodeling, and ROS/inflammation.
Main Methods:
- Review of existing literature on shear stress, NO, and ROS in vascular regulation.
- Analysis of shear-stress effects (steady vs. oscillating) on NO and ROS production.
- Investigation of ROS and inflammation's impact on remodeling enzymes.
Main Results:
- Endothelium-derived ROS are identified as mediators of shear-dependent arterial tone and remodeling.
- Differential effects of steady and oscillating shear on NO and ROS production are discussed.
- The interplay between microvascular tone, remodeling, and ROS/inflammation is highlighted.
Conclusions:
- Endothelium-derived ROS are crucial for regulating small artery tone and structure.
- Hydrogen peroxide (H2O2) warrants further investigation as an endothelium-derived factor in long-term vascular regulation.
- Understanding ROS mechanisms is vital for addressing vascular diseases.
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