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Published on: September 24, 2020
Reactive species and pulmonary edema
Karen E Iles1, Weifeng Song, David W Miller
1Department of Anesthesiology, University of Alabama at Birmingham, 901 19th Street South, 304 BMR II, Birmingham, AL 35294-2172, USA, Tel.: +1 205 975 2761, , kiles@uab.edu and Department of Environmental Health Sciences, School of Public Health, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
Reactive oxygen and nitrogen species (RONS) contribute to noncardiogenic pulmonary edema (NPE) by damaging lung epithelial sodium channels. Antioxidant therapies may improve outcomes for NPE patients.
Area of Science:
- Pulmonary medicine
- Cellular physiology
- Oxidative stress research
Background:
- Pulmonary edema involves excess fluid in lung interstitium, leading to hypoxemia.
- Noncardiogenic pulmonary edema (NPE) often arises from increased microvascular and alveolar permeability.
- Oxidant injury is a potential cause of NPE, involving reactive oxygen and nitrogen species (RONS).
Purpose of the Study:
- To investigate the role of RONS in the development of NPE.
- To explore the impact of RONS on epithelial sodium channel activity.
- To assess the potential of antioxidant therapy in managing NPE.
Main Methods:
- Utilizing experimental systems to manipulate RONS levels and antioxidant mechanisms.
- Observing the effects on epithelial sodium channel activity.
- Reviewing existing basic and clinical studies on RONS and NPE.
Main Results:
- Increased RONS or decreased antioxidant defenses alter epithelial sodium channel activity.
- Experimental evidence supports the hypothesis that RONS contribute to NPE.
- RONS can modify or damage ion channels crucial for lung fluid balance.
Conclusions:
- RONS play a significant role in the pathophysiology of NPE.
- Further research is needed to clarify the RONS-NPE connection.
- Antioxidant therapy, potentially combined with β-agonists, warrants investigation for improving NPE patient outcomes.
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