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Related Concept Videos

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-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:
Asthma: Pathogenesis and Management01:20

Asthma: Pathogenesis and Management

Asthma is a chronic pulmonary condition involving inflammation of the airways, hyper-reactivity, and reversible obstruction of the airways. This condition can significantly impact a person's quality of life, making breathing difficult and leading to distressing symptoms.
Asthma is classified as allergic and non-allergic. Allergens such as dust mites, pollen, and pet dander trigger allergic asthma, while factors like cold air, intense emotions, or exercise can induce non-allergic asthma.
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: Introduction01:29

Asthma-I: Introduction

Asthma is a chronic respiratory ailment that requires careful management due to its varying symptoms and influencing factors. It is characterized by airway inflammation, bronchial hyperresponsiveness, and reversible airflow obstruction, leading to symptoms like wheezing, shortness of breath, chest tightness, and coughing. The symptom frequency and intensity may vary considerably over time. It is also linked to immune system responses to allergens and irritants, highlighting the complex...
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...

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Related Experiment Video

Updated: May 12, 2026

A Reversible, Non-invasive Method for Airway Resistance Measurements and Bronchoalveolar Lavage Fluid Sampling in Mice
09:58

A Reversible, Non-invasive Method for Airway Resistance Measurements and Bronchoalveolar Lavage Fluid Sampling in Mice

Published on: April 13, 2010

Airway Hyperresponsiveness and Inflammation: Causation, Correlation, or No Relation?

Yvonne Mw Janssen-Heininger1, Charles G Irvin, Erich V Scheller

  • 1Department of Pathology, University of Vermont, Burlington, VT, USA.

Journal of Allergy & Therapy
|April 6, 2013
PubMed
Summary

This study investigated the link between airway inflammation and hyperresponsiveness in asthma using mouse models. Researchers found that these two key asthma features often do not directly correlate, highlighting the need for further mechanistic research.

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Last Updated: May 12, 2026

A Reversible, Non-invasive Method for Airway Resistance Measurements and Bronchoalveolar Lavage Fluid Sampling in Mice
09:58

A Reversible, Non-invasive Method for Airway Resistance Measurements and Bronchoalveolar Lavage Fluid Sampling in Mice

Published on: April 13, 2010

Evaluation of Respiratory System Mechanics in Mice using the Forced Oscillation Technique
13:10

Evaluation of Respiratory System Mechanics in Mice using the Forced Oscillation Technique

Published on: May 15, 2013

Noninvasive Sampling of Mucosal Lining Fluid for the Quantification of In Vivo Upper Airway Immune-mediator Levels
05:31

Noninvasive Sampling of Mucosal Lining Fluid for the Quantification of In Vivo Upper Airway Immune-mediator Levels

Published on: August 7, 2017

Area of Science:

  • Immunology
  • Respiratory Medicine
  • Pathogenesis of Asthma

Background:

  • Asthma affects millions globally, characterized by reversible airflow obstruction, airway hyperresponsiveness, and inflammation.
  • The mechanistic link between airway inflammation and hyperresponsiveness in asthma remains unclear.
  • Asthma pathogenesis involves airway inflammation, hyperresponsiveness, tissue damage, and remodeling.

Purpose of the Study:

  • To investigate the mechanistic link between airway inflammation and airway hyperresponsiveness in asthma.
  • To examine the impact of altering inflammatory signaling pathways (NF-κB, JNK1) on asthma features.
  • To explore the influence of antigen sensitization and delivery route on asthma development.

Main Methods:

  • Utilized several mouse models of asthma.
  • Manipulated inflammatory signaling pathways, including NF-κB and JNK1.
  • Investigated effects of antigen sensitization and route of antigen delivery.

Main Results:

  • Data suggest that airway inflammation and airway hyperresponsiveness do not always directly correlate in asthma models.
  • Altering inflammatory signaling pathways did not consistently link inflammation and hyperresponsiveness.
  • Antigen sensitization and delivery route influenced asthma features, but the direct correlation remained elusive.

Conclusions:

  • The direct mechanistic link between airway inflammation and airway hyperresponsiveness in asthma is not clearly established by current data.
  • Further mechanistic studies in mouse models are crucial to understand the interplay of these asthma components.
  • Understanding these interactions is critical for developing effective asthma therapies.