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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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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.
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Asthma-III: Symptoms and Complications01:24

Asthma-III: Symptoms and Complications

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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:
Classification of Asthma
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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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Asthma-IV: Diagnostic and Management01:30

Asthma-IV: Diagnostic and Management

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The diagnosis and management of asthma are comprehensive, encompassing clinical assessments, lung function tests, and pharmacological interventions. Here's an overview:
Clinical Assessment for Asthma:
This is the first step in diagnosing and managing asthma. It includes:
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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:
Chronic Inflammation
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Phenotypes and Endotypes in Asthma.

Amanda P McIntyre1, Ravi K Viswanathan2

  • 1Division of Allergy, Pulmonary & Critical Care, Department of Medicine, University of Wisconsin School of Medicine & Public Health, Madison, WI, USA.

Advances in Experimental Medicine and Biology
|July 18, 2023
PubMed
Summary
This summary is machine-generated.

Asthma classification has advanced from general phenotypes to specific endotypes, particularly T2 high and T2 low, improving personalized treatment with targeted therapies.

Keywords:
BiomarkersEndotypesHealth care utilizationHeterogeneityPulmonary functionSputum analysisT helper subsetsTriggers

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Area of Science:

  • Pulmonology and immunology
  • Molecular medicine
  • Precision medicine

Background:

  • Asthma is a complex airway inflammation with varied patient responses.
  • Molecular and imaging advances reveal underlying inflammatory pathways.
  • Biomarkers enable categorization into specific mechanistic endotypes.

Purpose of the Study:

  • To classify asthma into distinct mechanistic endotypes.
  • To identify subendotypes within Type 2 inflammation categories.
  • To highlight the impact of this classification on asthma management.

Main Methods:

  • Utilized advanced molecular techniques and imaging.
  • Employed sophisticated modeling and cluster analyses.
  • Integrated clinical, physiologic, and biomarker data.

Main Results:

  • Identified two primary asthma subgroups: T2 high and T2 low (non-T2).
  • Discovered distinct subendotypes within the T2 inflammation spectrum.
  • Demonstrated a shift from generic phenotypes to mechanistic endotypes.

Conclusions:

  • Mechanistic endotyping has transformed asthma management strategies.
  • Targeted biologic therapies are now approved based on these endotypes.
  • This approach heralds a new era of personalized precision medicine for asthma.