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Assessment of Glutamine as a Fuel Source for Alveolar Macrophages Exposed to Chronic Ethanol Using an Extracellular Flux Bioanalyzer
Published on: November 15, 2024
Alcohol's Effects on the Lung and Lung Disease
1Department of Internal Medicine, Division of Pulmonary, Critical Care & Sleep, University of Nebraska Medical Center, Omaha, Nebraska Nebraska Food for Health Center, University of Nebraska, Lincoln, Lincoln, Nebraska.
Alcohol misuse harms lung health by impairing pathogen clearance and immune responses. Understanding these mechanisms may reveal new therapeutic targets for alcohol-related lung diseases.
Area of Science:
- Pulmonary Medicine
- Toxicology
- Immunology
Background:
- Alcohol misuse is a significant risk factor for various lung diseases, including pneumonia and acute respiratory distress syndrome.
- Ethanol consumption alters lung function mechanically and immunologically.
- Identifying these alterations can lead to novel therapeutic strategies for respiratory conditions linked to alcohol abuse.
Purpose of the Study:
- To review the mechanisms by which alcohol misuse causes lung damage.
- To identify potential therapeutic targets for alcohol-induced lung diseases.
- To highlight knowledge gaps in alcohol-associated lung disease research.
Main Methods:
- A systematic literature search was performed in PubMed, Medline, and Embase.
- Studies published between January 2000 and January 2025 were included, using keywords related to alcohol and lung/respiratory effects.
- 148 studies were reviewed, with 114 cited, and 15 historical papers included.
Main Results:
- Alcohol misuse impairs mucus clearance of bacteria and increases microbial aspiration.
- It suppresses the function of innate and adaptive immune cells in the lungs.
- Reduced antioxidant levels and metabolites associated with alcohol consumption may also contribute to lung disease.
Conclusions:
- Alcohol misuse significantly increases lung susceptibility to infection and injury.
- Key mechanisms involve impaired immune cell function and pathogen clearance.
- Potential therapeutic targets exist, but further research is needed on dose-dependency, sex differences, and co-exposures.
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