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Published on: December 21, 2011
Regulation of signal transduction by reactive oxygen species in the cardiovascular system
David I Brown1, Kathy K Griendling2
1From the Division of Cardiology, Department of Medicine, Emory University, Atlanta, GA.
Abstract:
Oxidative stress has long been implicated in cardiovascular disease, but more recently, the role of reactive oxygen species (ROS) in normal physiological signaling has been elucidated. Signaling pathways modulated by ROS are complex and compartmentalized, and we are only beginning to identify the molecular modifications of specific targets. Here, we review the current literature on ROS signaling in the cardiovascular system, focusing on the role of ROS in normal physiology and how dysregulation of signaling circuits contributes to cardiovascular diseases, including atherosclerosis, ischemia-reperfusion injury, cardiomyopathy, and heart failure. In particular, we consider how ROS modulate signaling pathways related to phenotypic modulation, migration and adhesion, contractility, proliferation and hypertrophy, angiogenesis, endoplasmic reticulum stress, apoptosis, and senescence. Understanding the specific targets of ROS may guide the development of the next generation of ROS-modifying therapies to reduce morbidity and mortality associated with oxidative stress.
Insights
Reactive oxygen species (ROS) are vital for cardiovascular signaling. Dysregulation of ROS pathways contributes to heart diseases like atherosclerosis and heart failure, guiding new therapeutic strategies.
Area of Science:
- Cardiovascular Physiology
- Molecular Biology
- Oxidative Stress Research
Background:
- Oxidative stress is a known factor in cardiovascular disease.
- Reactive oxygen species (ROS) play crucial roles in normal physiological signaling within the cardiovascular system.
- ROS signaling pathways are complex, compartmentalized, and involve specific molecular targets.
Purpose of the Study:
- To review the current literature on ROS signaling in the cardiovascular system.
- To focus on the physiological roles of ROS and their dysregulation in cardiovascular diseases.
- To explore how ROS modulate key signaling pathways relevant to cardiovascular health and disease.
Main Methods:
- Literature review of current research on ROS signaling in the cardiovascular system.
- Analysis of studies investigating ROS modulation of specific cellular processes.
- Synthesis of information on the link between ROS signaling dysregulation and cardiovascular pathologies.
Main Results:
- ROS are integral to normal cardiovascular physiology, modulating pathways such as phenotypic modulation, migration, contractility, proliferation, angiogenesis, ER stress, apoptosis, and senescence.
- Dysregulation of ROS signaling circuits contributes to the development and progression of cardiovascular diseases including atherosclerosis, ischemia-reperfusion injury, cardiomyopathy, and heart failure.
- Specific molecular targets of ROS are being identified, offering insights into disease mechanisms.
Conclusions:
- Understanding the precise targets of ROS in cardiovascular signaling is crucial.
- Targeting ROS signaling pathways holds promise for developing novel therapies.
- Future research may lead to improved treatments for cardiovascular diseases associated with oxidative stress.
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