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Related Concept Videos

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 Disease III: Chronic Bronchitis Features01:24

Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features

Chronic bronchitis is a key phenotype of chronic obstructive pulmonary disease (COPD), characterized by airway-centered inflammation and mucus overproduction. It develops from long-term exposure to harmful particles or gases, most commonly cigarette smoke, which triggers a persistent inflammatory response.Cellular and Structural ChangesInflammation initially affects the large bronchi and later the smaller airways, with infiltration by immune cells, including neutrophils, macrophages, and...
COPD: Management Using Bronchodilators and Corticosteroids01:26

COPD: Management Using Bronchodilators and Corticosteroids

Chronic obstructive pulmonary isease (COPD) involves a group of progressive lung disorders characterized by persistent airflow limitation and chronic respiratory symptoms. Asthma-COPD Overlap Syndrome (ACOS), encompassing features of both asthma and Chronic obstructive pulmonary disease (COPD), is a group of progressive lung disorders that includes chronic bronchitis, emphysema, and refractory (non-reversible) asthma. ACOS leads to complex clinical presentations that combine the inflammatory...
Chronic Obstructive Pulmonary Disease IV: Clinical Manifestations01:19

Chronic Obstructive Pulmonary Disease IV: Clinical Manifestations

Chronic Obstructive Pulmonary Disease, or COPD, is a long-term condition marked by persistent and only partially reversible airflow limitation. It involves two overlapping conditions—chronic bronchitis and emphysema—which often co-appear but differ in dominant symptoms and underlying mechanisms.Chronic Bronchitis FeaturesChronic bronchitis presents with a persistent productive cough and thick, sometimes purulent mucus due to airway inflammation, enlarged mucus glands, and goblet cell...
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-IV: Assessement and Diagnostic Studies01:27

Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies

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

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Related Experiment Videos

Eosinophil and T cell markers predict functional decline in COPD patients.

Jeanine M D'Armiento1, Steven M Scharf, Michael D Roth

  • 1Department of Medicine, Columbia University, New York, NY, USA. jmd12@columbia.edu

Respiratory Research
|November 21, 2009
PubMed
Summary

Cytokine levels, specifically Interleukin-2 (IL-2) and eotaxin-1, may predict COPD progression. Higher IL-2 and lower eotaxin-1 in plasma indicate stable disease, while higher lung lavage eotaxin-1 suggests rapid decline.

Related Experiment Videos

Area of Science:

  • Pulmonary Medicine
  • Immunology
  • Biomarker Discovery

Background:

  • Forced expiratory volume in one second (FEV1) is a key COPD marker, but cannot reliably predict disease progression.
  • T lymphocytes and eosinophils are implicated in COPD stability.
  • Investigating cytokine profiles in COPD patients is crucial for understanding disease trajectory.

Purpose of the Study:

  • To determine if T cell and eosinophil-related cytokine levels in lung lavage fluid and plasma predict COPD disease course.
  • To identify potential biomarkers for COPD progression.

Main Methods:

  • Collected baseline lung lavage and plasma samples from COPD subjects with moderate-to-severe obstruction and emphysema.
  • Compared cytokine levels in stable COPD patients (N=34) versus rapidly declining COPD patients (N=16) and normal controls (N=11).
  • Utilized Luminex multiplex assay to measure multiple T cell and eosinophil-related cytokines simultaneously.

Main Results:

  • Stable COPD patients showed significantly higher plasma IL-2 levels compared to rapidly progressive COPD patients (p=0.04).
  • Plasma eotaxin-1 levels were significantly lower in stable COPD patients versus normal controls (p<0.03).
  • Lung lavage eotaxin-1 levels were significantly higher in rapidly progressive COPD patients compared to both normal controls (p<0.02) and stable COPD patients (p<0.05).

Conclusions:

  • Plasma IL-2 and eotaxin-1 may serve as important markers for disease stability in advanced emphysema.
  • These cytokines could potentially identify COPD patients at risk for rapid disease progression.
  • Further prospective studies are needed to validate IL-2 and eotaxin-1 as predictive markers for COPD.