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Related Experiment Videos

Eosinophilic bronchitis: clinical features, management and pathogenesis.

Surinder S Birring1, Mike Berry, Christopher E Brightling

  • 1Department of Respiratory Medicine, Institute For Lung Health, Glenfield Hospital, Leicester, UK. sb134@le.ac.uk

American Journal of Respiratory Medicine : Drugs, Devices, and Other Interventions
|January 15, 2004
PubMed
Summary

Eosinophilic bronchitis, a common cause of chronic cough, involves eosinophilic airway inflammation but lacks the variable airflow obstruction seen in asthma. Diagnosis and treatment with inhaled corticosteroids are effective, though further research is needed.

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Area of Science:

  • Pulmonology
  • Immunology
  • Pathology

Background:

  • Eosinophilic bronchitis is a frequent, treatable cause of chronic cough.
  • It is characterized by eosinophilic airway inflammation, similar to asthma.
  • However, it differs from asthma by exhibiting heightened cough reflex sensitivity without variable airflow obstruction.

Purpose of the Study:

  • To differentiate eosinophilic bronchitis from asthma based on airway inflammation and functional characteristics.
  • To explore the diagnostic methods and treatment efficacy for eosinophilic bronchitis.
  • To investigate the natural history and potential progression of eosinophilic bronchitis.

Main Methods:

  • Diagnosis typically involves induced sputum analysis.
  • Exclusion of other chronic cough causes through clinical, radiological, and lung function assessments.

Related Experiment Videos

  • Assessment of airway inflammation and mast cell localization.

    • Main Results:

    • Eosinophilic airway inflammation is the key pathological feature.
    • Mast cell localization differs between eosinophilic bronchitis (epithelial) and asthma (smooth muscle).
    • Cough responds well to inhaled corticosteroids, but optimal dosage and duration are not yet established.

    Conclusions:

    • Eosinophilic bronchitis is a distinct condition from asthma, primarily differing in airway dysfunction and mast cell distribution.
    • Induced sputum analysis is crucial for diagnosis.
    • Inhaled corticosteroids are effective, warranting further study on treatment parameters and long-term outcomes.