Related Experiment Video
Updated: Oct 17, 2025
08:17
Generation of a Chronic Obstructive Pulmonary Disease Model in Mice by Repeated Ozone Exposure
Published on: August 25, 2017
11.1K
Association Between Air Pollution and Lung Lobar Emphysema in COPD
Nguyen Thanh Tung1,2, Shu-Chuan Ho3, Yueh-Hsun Lu4,5
1International Ph.D. Program in Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.
Frontiers in Medicine
|October 8, 2021
Summary
Air pollution, including ozone (O3), particulate matter (PM2.5), and nitrogen dioxide (NO2), is linked to increased emphysema severity in COPD patients, particularly in the upper lobes. Higher ozone exposure increases the risk of panlobular emphysema.
Area of Science:
- Pulmonary Medicine
- Environmental Health
- Radiology
Background:
- Emphysema development is associated with air pollution.
- The specific impact of air pollutants on lobar emphysema extent is not well understood.
Purpose of the Study:
- To investigate the association between exposure to PM2.5, NO2, and O3 and the presence and extent of emphysema in COPD patients.
- To explore the relationship between air pollution and disease severity metrics like lung function and BODE index.
Main Methods:
- Studied 86 COPD patients, estimating air pollution exposure using a land-use regression model.
- Assessed emphysema extent using low-attenuation areas on high-resolution CT (HR-CT) scans.
- Analyzed associations with lung function, BODE quartiles, mMRC dyspnea score, and exercise capacity.
Main Results:
- Increased O3 exposure was linked to a higher odds ratio for panlobular emphysema compared to paraseptal emphysema.
- PM2.5 exposure correlated with BODE quartiles, mMRC scores, and exercise capacity.
- All studied pollutants (PM2.5, NO2, O3) were associated with increased emphysema in both upper and lower lung lobes, with a more pronounced effect on upper lobe emphysema.
Conclusions:
- Ozone exposure is associated with an increased risk of panlobular emphysema in COPD patients.
- Emphysema severity, especially in the upper lobes, is linked to exposure to PM2.5, NO2, and O3 in patients with COPD.
Related Concept Videos
01:20Chronic Obstructive Pulmonary Disease-I: Introduction
3.1K
Chronic Obstructive Pulmonary Disease (COPD) is a long-lasting respiratory condition requiring continuous attention and care. It is a progressive lung disease that leads to breathing challenges due to airflow obstruction. It manifests as persistent respiratory symptoms and restricted airflow resulting from abnormalities in the airways and alveoli, usually due to long-term exposure to harmful particles or gases. COPD mainly consists of two primary conditions: emphysema and chronic bronchitis.
3.1K
01:20Chronic Obstructive Pulmonary Disease-II: Pathophysiology
3.3K
Chronic Obstructive Pulmonary Disease (COPD) pathophysiology is intricate and multifaceted, involving a complex interplay of physiological processes. Understanding these mechanisms is crucial for effectively managing and treating COPD. Here is an in-depth look at the critical elements in the pathophysiology of COPD:
Chronic Inflammation
Chronic Inflammation
3.3K
01:22Chronic Obstructive Pulmonary Disease
1.5K
COPD is defined as a heterogeneous lung condition marked by persistent respiratory symptoms such as dyspnea, cough, and sputum production, caused by abnormalities in the airways that cause airflow obstruction.
Smoking is a primary risk factor for COPD, with over 80% of patients having a history of it. Patients typically experience progressive dyspnea or labored breathing, frequent coughing, and recurrent pulmonary infections. Many eventually succumb to respiratory failure, characterized by...
Smoking is a primary risk factor for COPD, with over 80% of patients having a history of it. Patients typically experience progressive dyspnea or labored breathing, frequent coughing, and recurrent pulmonary infections. Many eventually succumb to respiratory failure, characterized by...
1.5K
01:20COPD: Pathogenesis and Clinical Features
696
Chronic obstructive pulmonary disease (COPD) is a group of lung conditions that progressively worsen over time, including chronic bronchitis and emphysema. This cluster of diseases collectively leads to a gradual and irreversible decline in lung function over time.
The primary cause for the onset of COPD is cigarette smoking and exposure to air pollution. These hazardous factors initiate a chain reaction within the lungs, resulting in chronic inflammation, damage to the airways, and a...
The primary cause for the onset of COPD is cigarette smoking and exposure to air pollution. These hazardous factors initiate a chain reaction within the lungs, resulting in chronic inflammation, damage to the airways, and a...
696
01:27Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies
2.6K
Assessing and diagnosing Chronic Obstructive Pulmonary Disease (COPD) involves a detailed approach that includes a comprehensive review of medical history, physical examination, and a variety of diagnostic tests. This thorough evaluation is essential to ensure an accurate diagnosis and guide effective management strategies.
Medical History
Medical History
2.6K
01:25Chronic Obstructive Pulmonary Disease-III: Symptoms and Complications.
3.0K
Understanding the variety of primary symptoms and systemic complications that characterize chronic obstructive pulmonary disease (COPD) is crucial for healthcare professionals.
Symptoms of COPD can be classified as primary or systemic. Primary symptoms relate to reduced airflow, while systemic or extrapulmonary symptoms relate to COPD's broader impact on the body.
Primary Symptoms of COPD:
Symptoms of COPD can be classified as primary or systemic. Primary symptoms relate to reduced airflow, while systemic or extrapulmonary symptoms relate to COPD's broader impact on the body.
Primary Symptoms of COPD:
3.0K