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Lung disease associated with alpha1-antitrypsin deficiency
Rubin M Tuder1, Sabina M Janciauskiene, Irina Petrache
1Program in Translational Lung Research, Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado at Denver, Aurora, Colorado, USA. Rubin.Tuder@UCDenver.Edu
Proceedings of the American Thoracic Society
|October 30, 2010
Summary
Alpha-1 antitrypsin (A1AT) deficiency causes liver and lung diseases. This review highlights A1AT
Area of Science:
- Biochemistry
- Pulmonary Medicine
- Genetics
Background:
- Alpha-1 antitrypsin (A1AT) deficiency, caused by genetic mutations, leads to severe liver and pulmonary diseases like emphysema.
- Emphysema pathogenesis involves cigarette smoke, pollutants, apoptosis, oxidative stress, and protease/antiprotease imbalance, activating tissue-destructive mediators.
Purpose of the Study:
- To review the multifaceted biological functions of A1AT beyond its antiprotease activity.
- To propose that A1AT mitigates pathological processes in emphysema development.
Main Methods:
- Literature review of existing research on A1AT's biological functions and role in emphysema.
- Analysis of evidence for A1AT's interactions with apoptosis, inflammation, and signaling pathways.
Main Results:
- A1AT exhibits functions beyond protease inhibition, impacting emphysema pathogenesis.
- Evidence suggests A1AT inhibits apoptosis by binding and blocking active caspase-3.
- A1AT modulates inflammatory responses triggered by neutrophils, lipopolysaccharide, and tumor necrosis factor-α.
Conclusions:
- A1AT possesses protective roles in emphysema by inhibiting apoptosis and modulating inflammation.
- These findings expand the understanding of A1AT's therapeutic potential in lung diseases.
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