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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-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...
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: Symptoms and Complications01:24

Asthma-III: Symptoms and Complications

Asthma, a common chronic respiratory condition, is classified considering the frequency and severity of symptoms alongside lung function impairment. Understanding this classification is essential for appropriate treatment and management. Here's a detailed look at the classification of asthma and its clinical features and complications:
Classification of Asthma
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: May 7, 2026

Bronchial Thermoplasty: A Novel Therapeutic Approach to Severe Asthma
14:39

Bronchial Thermoplasty: A Novel Therapeutic Approach to Severe Asthma

Published on: November 4, 2010

Asthma.

Fernando D Martinez1, Donata Vercelli

  • 1Arizona Respiratory Center and BIO5 Institute, University of Arizona, Tucson, AZ, USA.

Lancet (London, England)
|September 18, 2013
PubMed
Summary
This summary is machine-generated.

Asthma involves reversible airway obstruction, often starting in childhood with genetic links. Early microbial exposure may protect against asthma, while new biological therapies offer hope for severe cases.

More Related Videos

Murine Model of Allergen Induced Asthma
08:05

Murine Model of Allergen Induced Asthma

Published on: May 14, 2012

Related Experiment Videos

Last Updated: May 7, 2026

Bronchial Thermoplasty: A Novel Therapeutic Approach to Severe Asthma
14:39

Bronchial Thermoplasty: A Novel Therapeutic Approach to Severe Asthma

Published on: November 4, 2010

Murine Model of Allergen Induced Asthma
08:05

Murine Model of Allergen Induced Asthma

Published on: May 14, 2012

Area of Science:

  • Pulmonology
  • Genetics
  • Immunology

Background:

  • Asthma is a complex respiratory condition characterized by recurrent, reversible bronchial obstruction, frequently initiating in childhood.
  • Genetic factors play a significant role, with identified gene variations increasing asthma risk.
  • Associations with viral infections and altered airway microbiota are noted, but their causal role remains unclear.

Purpose of the Study:

  • To explore the pathogenesis of asthma, focusing on genetic and immunological factors.
  • To investigate potential preventative strategies, particularly early-life microbial exposure.
  • To review current and emerging therapeutic approaches for mild, moderate, and severe asthma.

Main Methods:

  • Review of genetic studies, including genome-wide association studies (GWAS).
  • Analysis of immunological data implicating lung resident cells and mucosal epithelium.
  • Examination of epidemiological findings on early-life environmental exposures.
  • Assessment of current treatment guidelines and emerging biological therapies.

Main Results:

  • Genetic variations contribute to asthma susceptibility.
  • Early exposure to microbial products, especially in farming environments, shows a protective effect.
  • Defective lung resident cell responses are key in asthma pathogenesis.
  • Inhaled corticosteroids are standard for mild-moderate asthma, but adherence is challenging.
  • Biological therapies targeting IgE, IL-5, and IL-13 show promise for severe, refractory asthma.

Conclusions:

  • Asthma pathogenesis involves genetic predisposition and immune dysregulation.
  • Environmental exposures in early life may offer a novel prevention avenue.
  • Adherence to inhaled corticosteroids remains a treatment hurdle.
  • Targeted biological therapies represent a significant advancement for severe asthma management.