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Related Concept Videos

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...
Asthma-II: Pathophysiology and Classification01:26

Asthma-II: Pathophysiology and Classification

Asthma is a prevalent chronic respiratory condition marked by inflammation and hyperresponsiveness of the airways. Its pathophysiology involves complex interactions among inflammatory pathways, immune responses, and neural mechanisms.
Additionally, environmental and genetic factors play crucial roles in determining an individual's susceptibility to asthma and the severity of their condition.
Critical processes in asthma pathophysiology include:
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
Asthma I: Introduction01:28

Asthma I: Introduction

Asthma is a chronic inflammatory disorder of the airways characterized by variable airflow obstruction and heightened bronchial responsiveness to a wide range of triggers. The underlying inflammation leads to airway swelling, mucus hypersecretion, and smooth muscle constriction, all of which narrow the airway lumen and impede airflow. Clinically, asthma presents with recurrent episodes of wheezing, shortness of breath, chest tightness, and coughing, symptoms that typically vary in intensity and...
Asthma III: Clinical Manifestations01:13

Asthma III: Clinical Manifestations

Asthma presents with a characteristic pattern of episodic respiratory symptoms that reflect underlying airway inflammation, bronchoconstriction, and mucus hypersecretion. Although severity varies among individuals, certain clinical manifestations are considered hallmarks of the disorder and often guide diagnosis and assessment.Respiratory SymptomsA persistent cough is one of the most common early features of asthma. It is frequently dry and tends to worsen at night or in the early morning,...

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Related Experiment Video

Updated: Jun 8, 2026

Refined Murine Model of Idiopathic Pulmonary Fibrosis
07:51

Refined Murine Model of Idiopathic Pulmonary Fibrosis

Published on: June 17, 2025

Pulmonary remodeling in asthma.

Phil Lieberman1

  • 1University of Tennessee, College of Medicine, Departments of Medicine and Pediatrics, Division of Allergy and Immunology Memphis, TN 38120 USA.

F1000 Medicine Reports
|October 16, 2010
PubMed
Summary
This summary is machine-generated.

Asthma's inflammation can cause irreversible obstructive lung disease, impacting lung capacity in children and adults. New research explores the pathology and potential therapies to prevent fixed lung damage.

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Bronchial Thermoplasty: A Novel Therapeutic Approach to Severe Asthma
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Last Updated: Jun 8, 2026

Refined Murine Model of Idiopathic Pulmonary Fibrosis
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Bronchial Thermoplasty: A Novel Therapeutic Approach to Severe Asthma
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Bronchial Thermoplasty: A Novel Therapeutic Approach to Severe Asthma

Published on: November 4, 2010

Area of Science:

  • Pulmonology
  • Immunology
  • Pathology

Background:

  • Asthma involves inflammatory and immunologic processes.
  • These processes can lead to fixed obstructive lung disease unresponsive to treatment.
  • This condition affects lung development in children and accelerates decline in adults.

Purpose of the Study:

  • To provide insight into the pathologic processes underlying fixed obstructive lung disease in asthma.
  • To explore potential therapeutic effects for preventing irreversible lung changes.

Main Methods:

  • Review of recent studies on asthma pathology.
  • Analysis of clinical manifestations of fixed obstructive lung disease.
  • Investigation of potential preventative therapies.

Main Results:

  • Inflammatory and immunologic mechanisms in asthma can cause permanent lung damage.
  • Failure to achieve expected lung capacity in adulthood is a clinical sign.
  • Adults with asthma may experience accelerated decline in pulmonary function.

Conclusions:

  • Understanding the pathology of fixed obstructive lung disease is crucial.
  • Therapeutic strategies may prevent or mitigate irreversible lung damage in asthmatics.
  • Further research is needed to develop effective preventative treatments.