1. What are respiratory diseases such as asthma and COPD primarily characterized by?
2. What is the mechanism of action of beta-2 agonists in bronchodilation?
3. What is the primary role of corticosteroids in the treatment of respiratory diseases like asthma?
Beta-2 agonists — role?
Relax airway smooth muscle for bronchodilation.
Corticosteroids — mechanism?
Inhibit inflammatory gene expression.
Leukotriene modifiers — use?
Reduce airway inflammation in asthma.
Asthma — key features?
Chronic airway inflammation, hyperresponsiveness, wheezing.
COPD — primary cause?
Smoking-induced airway inflammation and alveolar destruction.
Bronchodilators — role?
Relax airway muscles, relieve airflow obstruction.
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