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Related Concept Videos

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...
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...
Drugs Used in Upper Respiratory Disorders: Overview01:16

Drugs Used in Upper Respiratory Disorders: Overview

Upper respiratory tract disorders, including viral infections and allergic rhinitis, cause significant discomfort and disrupt daily life. Managing these conditions involves a variety of drugs, such as antihistamines, intranasal steroids, decongestants, antitussives, expectorants, and mucolytics. Specific examples of drugs in each category are provided.
Antihistamines (e.g., Benadryl) block histamines from binding. Histamines are chemicals released during an allergic reaction in the body. As a...
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,...
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: Jul 16, 2026

Rapid Viscoelastic Characterization of Airway Mucus Using a Benchtop Rheometer
08:47

Rapid Viscoelastic Characterization of Airway Mucus Using a Benchtop Rheometer

Published on: April 21, 2022

Epithelial mucus-hypersecretion and respiratory disease.

Henry Danahay1, Alan D Jackson

  • 1Novartis Institutes for Biomedical Research, Wimblehurst Road, Horsham, West Sussex, RH12 5AB, UK.

Current Drug Targets. Inflammation and Allergy
|February 20, 2007
PubMed
Summary

Excess mucus in Chronic Obstructive Pulmonary Disease (COPD) impairs airway health. This review explores how airway epithelial cell dysfunction, particularly goblet cell changes, disrupts mucus clearance and lung function, aiming to uncover mechanisms behind these respiratory diseases.

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Determining Ciliary Function and Membrane Impermeability of the Pseudostratified Lung Airway Epithelium
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Last Updated: Jul 16, 2026

Rapid Viscoelastic Characterization of Airway Mucus Using a Benchtop Rheometer
08:47

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Published on: April 21, 2022

Mucin Agarose Gel Electrophoresis: Western Blotting for High-molecular-weight Glycoproteins
09:24

Mucin Agarose Gel Electrophoresis: Western Blotting for High-molecular-weight Glycoproteins

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Determining Ciliary Function and Membrane Impermeability of the Pseudostratified Lung Airway Epithelium
07:40

Determining Ciliary Function and Membrane Impermeability of the Pseudostratified Lung Airway Epithelium

Published on: February 21, 2025

Area of Science:

  • Pulmonary Medicine
  • Cell Biology
  • Respiratory Physiology

Background:

  • Mucus production, secretion, and clearance are vital for airway health.
  • In Chronic Obstructive Pulmonary Disease (COPD), excess mucus causes airway plugging and lung function decline.
  • Goblet cells are key epithelial cells responsible for producing gel-forming mucins.

Purpose of the Study:

  • To review the regulation of airway epithelial cell composition and function.
  • To explore mechanisms underlying epithelial dysfunction and uncoupling of mucociliary clearance in COPD.
  • To develop hypotheses for understanding respiratory diseases like COPD.

Main Methods:

  • Literature review focusing on goblet cell formation, mucus secretion, and airway surface liquid homeostasis.
  • Discussion of functional overlap between airway epithelial cell populations.
  • Analysis of progenitor cell influence and high goblet cell density implications.

Main Results:

  • Mucociliary clearance (MCC) system facets, including mucus secretion, ion/fluid transport, and ciliary function, can become uncoupled in COPD.
  • The precise processes leading to this uncoupling remain largely unknown.
  • Goblet cell density and function are central to mucus abnormalities in respiratory diseases.

Conclusions:

  • Understanding the regulation of airway epithelial cells, particularly goblet cells, is crucial for respiratory health.
  • Identifying mechanisms of epithelial dysfunction may provide therapeutic targets for COPD and other airway diseases.
  • Further research is needed to elucidate the genesis of epithelial dysfunction in respiratory diseases.