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Airway hyperresponsiveness and late asthmatic responses.
1Section of Respiratory Medicine, University Hospital, Saskatoon, Saskatchewan, Canada.
Chest
|July 1, 1988
Summary
Late asthmatic responses, not early bronchospasm, drive asthma pathogenesis. Anti-inflammatory strategies, including environmental control and medications like sodium cromoglycate and corticosteroids, are crucial for managing allergic and occupational asthma.
Area of Science:
- Immunology
- Pulmonology
- Occupational Health
Background:
- Asthma pathogenesis involves early bronchospastic responses and later inflammatory sequelae.
- Late asthmatic responses and increased airway responsiveness are increasingly recognized as key drivers of asthma.
Purpose of the Study:
- To highlight the significance of late inflammatory responses in asthma.
- To underscore the rationale for early anti-inflammatory therapeutic strategies in asthma management.
Main Methods:
- The study reviews existing literature on asthma pathogenesis and treatment.
- It focuses on the role of allergen and chemical exposure in triggering inflammatory responses.
Main Results:
- Late inflammatory sequelae, including late asthmatic response and nonallergic airway hyperresponsiveness, are more critical than early bronchospasm in asthma.
- These late responses can be effectively inhibited by sodium cromoglycate and corticosteroids, but not by bronchodilators.
Conclusions:
- Allergic and occupational asthma are fundamentally inflammatory conditions.
- Early implementation of anti-inflammatory strategies, such as environmental control, sodium cromoglycate, and corticosteroids, is essential for effective asthma management.