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Pathogenesis of chronic obstructive pulmonary disease
Rubin M Tuder1, Irina Petrache
1Program in Translational Lung Research, Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado, School of Medicine, Denver, CO, USA. Rubin.Tuder@ucdenver.edu
The Journal of Clinical Investigation
|August 2, 2012
Summary
Chronic obstructive pulmonary disease (COPD) causes a significant global health burden. This review details COPD pathogenesis, focusing on emphysema development from environmental exposures and cellular damage.
Area of Science:
- Pulmonology and Respiratory Medicine
- Pathogenesis of Lung Diseases
- Cellular Biology and Molecular Mechanisms
Background:
- Chronic obstructive pulmonary disease (COPD) represents a major global health challenge, comparable to infectious diseases.
- COPD is a complex, multidimensional illness with diverse clinical and intermediate phenotypes.
- Understanding COPD pathogenesis is crucial for developing effective therapeutic strategies.
Purpose of the Study:
- To review the pathogenesis of COPD, with a specific emphasis on emphysema.
- To elucidate the stages of pulmonary injury, including initiation, progression, and consolidation.
- To explore the molecular and cellular mechanisms underlying lung damage in COPD.
Main Methods:
- Review of existing literature on COPD pathogenesis, focusing on emphysema.
- Analysis of the roles of oxidative stress, inflammation, and cell death pathways.
- Examination of the impact of environmental exposures like cigarette smoke and pollutants.
Main Results:
- Pulmonary injury in COPD involves distinct stages: initiation, progression, and consolidation.
- Tissue damage results from complex interactions including oxidative stress, inflammation, extracellular matrix proteolysis, and cell death (apoptosis and autophagy).
- Cigarette smoke exposure triggers self-propagating processes leading to structural and macromolecular alterations, mimicking aspects of aging.
Conclusions:
- The pathogenesis of COPD, particularly emphysema, is a multifaceted process driven by environmental insults.
- Understanding these complex cellular interactions is key to addressing the COPD epidemic.
- The findings highlight similarities between COPD-induced lung damage and the aging process.
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