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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

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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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Asthma is a chronic respiratory condition for which new therapeutic avenues, including anti-inflammatory drugs like mast cell stabilizers and anti-IgE treatments, continue to be developed.
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Murine Model of Allergen Induced Asthma
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Phenotyping and Endotyping Asthma Based on Biomarkers.

Fotis Perlikos, Giorgos Hillas, Stelios Loukides1

  • 1Smolika 2 16673, Athens, Greece. ssat@hol.gr.

Current Topics in Medicinal Chemistry
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Asthma heterogeneity is classified by phenotypes and endotypes, identified using biomarkers. Understanding these distinct patient subgroups and their underlying mechanisms can lead to new targeted therapies for asthma management.

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Area of Science:

  • Respiratory Medicine
  • Immunology
  • Genetics

Background:

  • Asthma is a complex, heterogeneous chronic inflammatory airways disease.
  • Phenotypes represent observable clinical characteristics, while endotypes define subgroups by shared pathophysiological mechanisms.
  • Biomarkers are crucial for objectively measuring biological processes and therapeutic responses in asthma.

Purpose of the Study:

  • To differentiate between asthma phenotypes and endotypes.
  • To highlight the role of biomarkers in identifying distinct asthma subgroups.
  • To explore how understanding these classifications can lead to targeted treatment strategies.

Main Methods:

  • Identification of inflammatory phenotypes using biomarkers, particularly sputum cell counts (eosinophils, neutrophils).
  • Definition of endotypes through statistical clustering, targeted immune therapies, and omics approaches.
  • Analysis of clinical characteristics and treatment responses associated with different asthma subgroups.

Main Results:

  • Eosinophilic phenotype (classic atopic asthma) generally responds to corticosteroids, with exceptions in severe cases.
  • Neutrophilic phenotype shows poor response to corticosteroids, even in mild asthma.
  • Biomarker-based phenotyping and endotyping approaches are key to understanding asthma complexity.

Conclusions:

  • Distinguishing between asthma phenotypes and endotypes is essential for clarifying disease mechanisms.
  • These classifications enable the development of new, targeted treatment therapies and strategies.
  • Biomarker discovery and application are critical for personalized asthma management.