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Related Concept Videos

Chronic Obstructive Pulmonary Disease II: Emphysema01:23

Chronic Obstructive Pulmonary Disease II: Emphysema

Emphysema, a major phenotype of chronic obstructive pulmonary disease (COPD), is characterized by irreversible destruction of alveolar walls and permanent enlargement of distal airspaces. Unlike chronic bronchitis, which primarily affects the airways, emphysema predominantly involves the lung parenchyma, where structural damage leads to airflow limitation.PathophysiologyIt most commonly results from prolonged exposure to cigarette smoke and other toxic gases, particularly cigarette smoke.
Chronic Obstructive Pulmonary Disease-II: Pathophysiology01:20

Chronic Obstructive Pulmonary Disease-II: Pathophysiology

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 Obstructive Pulmonary Disease I: Introduction01:23

Chronic Obstructive Pulmonary Disease I: Introduction

Chronic obstructive pulmonary disease is a common, preventable, and treatable respiratory disorder characterized by persistent symptoms and progressive airflow limitation. This limitation results from a combination of small-airway disease (obstructive bronchiolitis) and parenchymal destruction (emphysema), both driven by chronic inflammation from exposure to harmful particles or gases.The disease includes two main pathological entities: emphysema, marked by destruction of alveolar walls and...
Chronic Obstructive Pulmonary Disease-I: Introduction01:20

Chronic Obstructive Pulmonary Disease-I: Introduction

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.
COPD: Pathogenesis and Clinical Features01:20

COPD: Pathogenesis and Clinical Features

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...
Chronic Obstructive Pulmonary Disease01:24

Chronic Obstructive Pulmonary Disease

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...

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Related Experiment Video

Updated: Jun 8, 2026

Generation of a Chronic Obstructive Pulmonary Disease Model in Mice by Repeated Ozone Exposure
08:17

Generation of a Chronic Obstructive Pulmonary Disease Model in Mice by Repeated Ozone Exposure

Published on: August 25, 2017

[COPD and alpha-1-antitrypsin deficiency].

Beatriz Lara1

  • 1Servicio de Neumología, Hospital Universitario Arnau de Vilanova, Lleida, España. beat1135@separ.es

Archivos De Bronconeumologia
|September 21, 2010
PubMed
Summary

Alpha-1-antitrypsin deficiency (AATD) is a genetic disorder causing emphysema. Early diagnosis and avoiding smoking are crucial for managing lung function and improving life expectancy for individuals with AATD.

Area of Science:

  • Genetics
  • Pulmonology
  • Biochemistry

Context:

  • Alpha-1-antitrypsin deficiency (AATD) is the primary genetic determinant of emphysema.
  • Clinically relevant protein variants can polymerize in hepatocytes, leading to liver disease.
  • The PiZ variant is the most common abnormal form associated with AATD.

Purpose:

  • To summarize the genetic basis and clinical implications of Alpha-1-antitrypsin deficiency.
  • To highlight the pathogenesis of emphysema and liver disease in AATD patients.
  • To discuss prognostic factors and treatment strategies for AATD.

Summary:

  • AATD leads to emphysema due to unopposed elastase activity in the lungs.
  • Liver disease can occur from Z polymer accumulation in hepatocytes.

Related Experiment Videos

Last Updated: Jun 8, 2026

Generation of a Chronic Obstructive Pulmonary Disease Model in Mice by Repeated Ozone Exposure
08:17

Generation of a Chronic Obstructive Pulmonary Disease Model in Mice by Repeated Ozone Exposure

Published on: August 25, 2017

  • Forced expiratory volume in one second (FEV(1)) is a key prognostic indicator, significantly impacted by smoking.
  • Life expectancy for non-smokers with AATD is comparable to the general population, while smokers experience faster lung function decline.
  • Standard COPD treatments apply, with AATD augmentation therapy recommended for deteriorating lung function.

    • Impact:

    • Emphasizes the critical role of genetics in emphysema development.
    • Underscores the dual risk of lung and liver disease in AATD.
    • Highlights smoking cessation as paramount for improving prognosis in AATD patients.
    • Informs clinical management by identifying FEV(1) as a prognostic marker and guiding augmentation therapy.
    • Contributes to understanding the epidemiology and clinical course of AATD in Spain.