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Sputum cell counts in airway disease: a useful sampling technique
P G Gibson1, J Dolovich, J A Denburg
1Department of Medicine, McMaster University, Hamilton, Ontario, Canada.
Agents and Actions. Supplements
|January 1, 1990
Summary
Sputum cell counts can identify airway inflammation patterns. Asthma and chronic cough patients show eosinophils and mast cells, unlike chronic bronchitis patients dominated by macrophages.
Area of Science:
- Pulmonary Medicine
- Immunology
Background:
- Airway inflammation is key in diseases like asthma and chronic bronchitis.
- Differentiating inflammatory patterns noninvasively is crucial for effective treatment.
Purpose of the Study:
- To assess the reproducibility and diagnostic utility of quantitative sputum cell counts.
- To identify distinct sputum inflammatory cell profiles in asthma, chronic bronchitis, and chronic cough.
Main Methods:
- Reproducible quantitative sputum cell counts were performed.
- Cellular analysis distinguished eosinophils, metachromatic (mast) cells, and macrophages.
Main Results:
- Asthma and corticosteroid-responsive chronic cough showed high eosinophils and mast cells.
- Chronic bronchitis (smokers) predominantly featured macrophages.
- Sputum cell counts demonstrated distinct inflammatory patterns.
Conclusions:
- Quantitative sputum cell counts are reproducible and noninvasive.
- Sputum analysis effectively identifies inflammatory patterns in airway diseases.
- This method aids in diagnosing and understanding airway inflammation.