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Related Concept Videos

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.
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 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...
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...
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...

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Related Experiment Video

Updated: May 10, 2026

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

Pathogenesis of exercise-induced bronchoconstriction.

Pascale Kippelen1, Sandra D Anderson

  • 1Centre for Sports Medicine & Human Performance, Brunel University, Uxbridge, Middlesex UB8 3PH, UK. pascale.kippelen@brunel.ac.uk

Immunology and Allergy Clinics of North America
|July 9, 2013
PubMed
Summary
This summary is machine-generated.

Exercise-induced bronchoconstriction (EIB) may stem from airway inflammation due to drying during exercise. Inefficient airway repair after injury could also contribute to EIB development.

Keywords:
Airway inflammationEpithelial injuryHyperpnoeaOsmotic stressThermal stress

Related Experiment Videos

Last Updated: May 10, 2026

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

Area of Science:

  • Respiratory Medicine
  • Exercise Physiology
  • Pulmonary Inflammation

Background:

  • Exercise-induced bronchoconstriction (EIB) is a common condition affecting athletes and individuals with asthma.
  • The precise mechanisms underlying EIB development are complex and multifactorial.
  • Understanding these mechanisms is crucial for effective management and treatment strategies.

Purpose of the Study:

  • To elucidate the potential mechanisms contributing to the development of exercise-induced bronchoconstriction (EIB).
  • To explore the role of airway drying, inflammation, and repair processes in EIB pathogenesis.
  • To differentiate potential mechanisms in individuals with and without asthma.

Main Methods:

  • Review of existing literature on exercise physiology and respiratory medicine.
  • Analysis of proposed pathophysiological pathways for EIB.
  • Synthesis of evidence regarding airway epithelial responses to exercise.

Main Results:

  • Airway epithelial drying during exercise appears to be a prerequisite for EIB.
  • An associated inflammatory response following airway drying is implicated in EIB.
  • Dysregulated repair mechanisms of airway epithelium after exercise may underlie EIB progression.

Conclusions:

  • The development of EIB is likely initiated by airway drying and subsequent inflammation.
  • Impaired airway epithelial repair processes following exercise may contribute to the chronicity or severity of EIB.
  • Further research is warranted to fully understand the interplay of these factors in diverse populations.