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Related Concept Videos

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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Chronic Obstructive Pulmonary Disease-II: Pathophysiology01:20

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Chronic Obstructive Pulmonary Disease (COPD) pathophysiology is intricate and multifaceted, involving a complex interplay of physiological processes. Understanding these mechanisms is crucial for effectively managing and treating COPD. Here is an in-depth look at the critical elements in the pathophysiology of COPD:
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Asthma: Pathogenesis and Management01:20

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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.
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Asthma-I: Introduction01:29

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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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Factors Affecting Pulmonary Ventilation01:19

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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.
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Asthma-III: Symptoms and Complications01:24

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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:
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Related Experiment Video

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A Reversible, Non-invasive Method for Airway Resistance Measurements and Bronchoalveolar Lavage Fluid Sampling in Mice
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Airway Remodeling in Asthma.

Kenneth P Hough1, Miranda L Curtiss1, Trevor J Blain1

  • 1Division of Pulmonary Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States.

Frontiers in Medicine
|June 9, 2020
PubMed
Summary

Asthma involves airway inflammation and structural changes called airway remodeling. This review details how epithelial cells, immune cells, and mesenchymal cells drive remodeling, and the impact of aging on persistent asthma.

Keywords:
airway remodelingasthmaepitheliumimmune cellsmesenchyme

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Area of Science:

  • Pulmonary Medicine
  • Immunology
  • Cell Biology

Background:

  • Asthma is an inflammatory airway disease characterized by bronchoconstriction and shortness of breath.
  • Airway remodeling, a pathological feature of chronic asthma, involves structural changes contributing to disease severity.
  • Environmental irritants trigger inflammatory responses that initiate airway remodeling.

Purpose of the Study:

  • To review the integrated processes of airway remodeling in asthma.
  • To explore the roles of epithelial, immune, and mesenchymal cells in airway remodeling.
  • To investigate the influence of inflammaging on persistent asthma and airway remodeling in the elderly.

Main Methods:

  • Review of existing literature on asthma pathogenesis and airway remodeling.
  • Analysis of cellular crosstalk and signaling pathways involved in airway remodeling.
  • Examination of the role of environmental exposures and aging in asthma progression.

Main Results:

  • Airway remodeling is driven by a dynamic interplay between epithelial cell initiation, immune cell amplification, and mesenchymal effector functions.
  • Environmental factors like dust, chemicals, and smoke exposure initiate pro-inflammatory cascades leading to remodeling.
  • Inflammaging contributes to persistent inflammation and exacerbates airway remodeling in elderly asthmatics.

Conclusions:

  • Understanding the multi-cellular mechanisms of airway remodeling is crucial for developing targeted asthma therapies.
  • Addressing environmental triggers and age-related inflammatory changes may offer new therapeutic strategies for chronic asthma.
  • Further research into inflammaging's role can lead to improved management of asthma in aging populations.