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Related Concept Videos

Asthma: Pathogenesis and Management01:20

Asthma: Pathogenesis and Management

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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.
490
Asthma-II: Pathophysiology and Classification01:26

Asthma-II: Pathophysiology and Classification

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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:
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Asthma-I: Introduction01:29

Asthma-I: Introduction

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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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Antiasthma Drugs: Muscarinic Receptor Antagonists01:20

Antiasthma Drugs: Muscarinic Receptor Antagonists

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Muscarinic receptor antagonists, also known as antimuscarinic agents, are a class of bronchodilators used to treat asthma, although they are more commonly used to treat COPD. They work by inhibiting the action of acetylcholine (ACh), a neurotransmitter, on muscarinic receptors found in the airways.
Antimuscarinic agents compete with ACh for the same binding site on the muscarinic receptors. By binding to these receptors, they inhibit the downstream effects of ACh and block the parasympathetic...
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Factors Affecting Pulmonary Ventilation01:19

Factors Affecting Pulmonary Ventilation

1.5K
Besides the pressure difference between the external environment and the lungs, the airflow rate and ease of pulmonary ventilation are also influenced by three other factors: surface tension of the fluid in the alveoli, compliance of the lungs, and airway resistance.
Alveolar Surface Tension
The alveolar fluid lines the luminal surface of the alveoli and exerts a force called surface tension. This force is caused by the polar water molecules in the liquid being more strongly attracted to each...
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Antiasthma Drugs: β2-Adrenoceptor Agonists01:25

Antiasthma Drugs: β2-Adrenoceptor Agonists

324
Bronchodilators are critical in managing asthma, a chronic respiratory condition characterized by airway constriction due to inflammation and hyper-reactivity. Specifically, bronchodilators ease this constriction by relaxing the bronchial muscles, facilitating easier breathing.
One class of bronchodilators includes β2-adrenoceptor agonists. These agents target the β2-adrenoceptors located on bronchial smooth muscle cells. By stimulating these receptors, β2-agonists induce...
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Related Experiment Video

Updated: Aug 5, 2025

Utilizing the Precision-Cut Lung Slice to Study the Contractile Regulation of Airway and Intrapulmonary Arterial Smooth Muscle
08:59

Utilizing the Precision-Cut Lung Slice to Study the Contractile Regulation of Airway and Intrapulmonary Arterial Smooth Muscle

Published on: May 5, 2022

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Airway Smooth Muscle and Asthma.

Steven An1, Dale D Tang2

  • 1Rutgers Institute for Translational Medicine and Science, New Brunswick, NJ 08091, USA.

Cells
|March 29, 2023
PubMed
Summary

Airway smooth muscle (ASM) research began in 1804. This historical overview traces the scientific understanding of ASM from its initial description to modern insights.

Area of Science:

  • Pulmonary Medicine
  • Respiratory Physiology
  • Cell Biology

Background:

  • The initial description of airway smooth muscle (ASM) dates back to 1804 by Franz Daniel Reisseisen.
  • Early observations laid the groundwork for understanding the role of ASM in respiratory function.

Discussion:

  • Subsequent research has elucidated the complex functions of ASM beyond simple contraction.
  • Understanding ASM is crucial for respiratory diseases like asthma and COPD.

Key Insights:

  • The historical trajectory reveals a progressive deepening of knowledge regarding ASM structure and function.
  • Reisseisen's early work, though rudimentary, marked the beginning of a long scientific inquiry.

Outlook:

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Related Experiment Videos

Last Updated: Aug 5, 2025

Utilizing the Precision-Cut Lung Slice to Study the Contractile Regulation of Airway and Intrapulmonary Arterial Smooth Muscle
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  • Future research will continue to explore ASM's role in airway remodeling and disease pathogenesis.
  • Investigating novel therapeutic targets within ASM pathways remains a key objective.