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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: 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 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,...
Allergic Reactions: Anaphylaxis01:30

Allergic Reactions: Anaphylaxis

Anaphylaxis is a severe, life-threatening hypersensitivity reaction mediated by Immunoglobulin E (IgE) antibodies. When IgE binds to allergens, it triggers the release of mediators– histamine, leukotrienes, and prostaglandins from mast cells and basophils. These mediators cause vasodilation, edema, and inflammation, leading to various symptoms.The primary allergens causing anaphylaxis include food items (e.g., peanuts, shellfish), drugs (e.g., penicillin, asparaginase, corticotropin, heparin),...
Allergic Reactions02:06

Allergic Reactions

Overview

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Related Experiment Video

Updated: May 31, 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 hyperreactivity].

M Antosová1, A Strapková, A Bencová

  • 1Univerzita Komenského v Bratislave, Jesseniova lekárska fakulta v Martine a Univerzitná nemocnica Martin, Klinika pneumológie a ftizeológie, Martin, Slovenská republika.

Ceskoslovenska Fysiologie
|June 22, 2011
PubMed
Summary

Airway hyperreactivity (AHR), an abnormal bronchoconstriction, involves complex factors including genetics, inflammation, and neural regulation. Further research is needed to understand its pathogenesis and develop new therapeutic interventions.

Area of Science:

  • Respiratory Medicine
  • Immunology
  • Pathophysiology

Context:

  • Airway hyperreactivity (AHR) is a common symptom in various respiratory diseases.
  • AHR is characterized by abnormal bronchoconstriction in response to diverse stimuli.
  • The precise pathogenesis of AHR remains incompletely understood.

Purpose:

  • To provide a comprehensive overview of airway hyperreactivity.
  • To explore risk factors and pathogenesis of AHR.
  • To discuss clinical importance and therapeutic intervention strategies for AHR.

Summary:

  • AHR pathogenesis involves genetic predisposition, environmental factors, and inflammatory mediators.
  • Endogenous factors like growth factors and nuclear transcription factors play a role in AHR.

More Related Videos

In vitro Measurements of Tracheal Constriction Using Mice
10:20

In vitro Measurements of Tracheal Constriction Using Mice

Published on: June 25, 2012

Related Experiment Videos

Last Updated: May 31, 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

In vitro Measurements of Tracheal Constriction Using Mice
10:20

In vitro Measurements of Tracheal Constriction Using Mice

Published on: June 25, 2012

  • Neural regulation and the release of pro-inflammatory neurotransmitters are critical in AHR development.

    • Impact:

    • Enhances understanding of AHR pathophysiology.
    • Highlights the need for improved diagnostic and therapeutic approaches.
    • Informs future research directions for managing AHR-related respiratory conditions.