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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-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 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,...
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: Jun 26, 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 14, 2010

Asthma severity: histopathologic correlations.

J E Fish1, S P Peters

  • 1Division of Critical Care, Pulmonary, Allergic and Immunologic Diseases, Jefferson Medical College of Thomas Jefferson University, Philadelphia, Pennsylvania 19107, USA.

Drugs of Today (Barcelona, Spain : 1998)
|September 16, 2003
PubMed
Summary
This summary is machine-generated.

Asthma severity is not well correlated with airway inflammation markers. Better tissue sampling methods are needed to understand asthma pathology and improve treatment decisions for better patient outcomes.

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Murine Model of Allergen Induced Asthma
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Murine Model of Allergen Induced Asthma

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Advanced Imaging of Lung Homing Human Lymphocytes in an Experimental In Vivo Model of Allergic Inflammation Based on Light-sheet Microscopy
10:39

Advanced Imaging of Lung Homing Human Lymphocytes in an Experimental In Vivo Model of Allergic Inflammation Based on Light-sheet Microscopy

Published on: April 16, 2019

Related Experiment Videos

Last Updated: Jun 26, 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 14, 2010

Murine Model of Allergen Induced Asthma
08:05

Murine Model of Allergen Induced Asthma

Published on: May 14, 2012

Advanced Imaging of Lung Homing Human Lymphocytes in an Experimental In Vivo Model of Allergic Inflammation Based on Light-sheet Microscopy
10:39

Advanced Imaging of Lung Homing Human Lymphocytes in an Experimental In Vivo Model of Allergic Inflammation Based on Light-sheet Microscopy

Published on: April 16, 2019

Area of Science:

  • Pulmonary Medicine
  • Immunology
  • Pathology

Background:

  • Asthma is an inflammatory airway disease causing variable airflow obstruction and symptoms like wheezing and dyspnea.
  • Current asthma management relies on symptom severity and physiological impairment, not direct markers of airway inflammation.
  • Understanding the link between airway inflammation and clinical outcomes is crucial for effective asthma treatment.

Purpose of the Study:

  • To investigate the correlation between airway inflammation markers and clinical/physiological variables in asthma.
  • To determine if undertreated airway inflammation leads to long-term adverse outcomes, such as chronic airway obstruction.
  • To identify potential markers of inflammation that correlate with acute or stable asthma severity.

Main Methods:

  • Review of studies on asthma pathology, including airway inflammation and structural changes.
  • Analysis of findings from bronchoscopic tissue sampling in mild and severe asthmatics.
  • Evaluation of the impact of anti-inflammatory therapy on inflammation and clinical variables.

Main Results:

  • Asthma pathology shows inflammation (eosinophils, mast cells, lymphocytes), epithelial disruption, and smooth muscle hypertrophy in both mild and severe cases.
  • Quantitative correlations between inflammation intensity and disease severity have been inconsistent.
  • While corticosteroids reduce inflammation and improve symptoms, the precise inflammatory markers correlating with severity remain unclear.

Conclusions:

  • Current tissue sampling methods are inadequate for fully assessing airway inflammation and its correlation with asthma severity.
  • Further research with improved sampling techniques is needed to elucidate the relationship between airway inflammation and asthma outcomes.
  • Developing treatments based on specific inflammatory markers could lead to more personalized and effective asthma management.