Related Experiment Videos
Autoantibodies in patients with chronic bronchitis
British Journal of Diseases of the Chest
|April 1, 1976
Summary
Antinuclear antibody (ANA) was detected in 28% of severe chronic bronchitis patients, but not in milder cases or controls. This suggests severe chronic bronchitis, not mild cases, may be linked to ANA prevalence in lung diseases.
Area of Science:
- Immunology
- Pulmonology
- Rheumatology
Background:
- Antinuclear antibodies (ANA) are associated with autoimmune diseases and some lung conditions.
- The prevalence of ANA in chronic bronchitis, particularly severe forms, requires further investigation.
Purpose of the Study:
- To investigate the association between chronic bronchitis severity and the presence of antinuclear antibodies (ANA).
Main Methods:
- Assessed ANA in 50 patients with severe chronic bronchitis (MRC criteria) and 28 with less severe chronic bronchitis.
- Compared ANA prevalence with age- and sex-matched non-bronchitic controls.
- Analyzed correlations between ANA and disease duration, sputum characteristics, respiratory function, smoking, and other antibodies.
Main Results:
- ANA was found in 28% of severe chronic bronchitis patients, versus 4% in controls and 0% in less severe cases.
- ANA presence was not linked to disease duration, sputum, eosinophilia, respiratory function, smoking, or bacterial precipitins.
- No significant increase in smooth muscle or "reticulin" antibodies was observed.
Conclusions:
- Severe chronic bronchitis, but not mild forms, is associated with a higher prevalence of ANA.
- Chronic bronchitis is unlikely to be a major contributor to ANA prevalence in other lung diseases unless extremely severe.