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Clinical Trial Summary

The purpose of this study is to determine whether macrolide therapy is effective in treating patients hospitalized with asthma exacerbations or chronic obstructive pulmonary disease (COPD)exacerbations. We hypothesize that compared to placebo, maintenance therapy with macrolides, when added to usual care, a) improves respiratory symptoms, b) improves quality of life, c) reduces airway inflammation, d) reduces airflow obstruction, and e) decreases the rate of re-exacerbations.


Clinical Trial Description

Asthma and chronic obstructive pulmonary disease (COPD) are the two most common obstructive lung diseases. Chronic airway inflammation and episodic worsening of respiratory symptoms and airflow obstruction (exacerbations) occur in asthma and COPD. Despite major advances in the development of therapies for these respiratory disorders, asthma and COPD exacerbations are common and result in substantial morbidity and mortality. Moreover, patients hospitalized for asthma or COPD exacerbations are at high risk for near fatal and fatal re-exacerbations after discharge home. These observations highlight the need for novel therapies to prevent asthma and COPD exacerbations. The role of macrolide antibiotics (e.g., azithromycin, clarithromycin, erythromycin) in treating bacterial infections is well established. Recent pre-clinical evidence also suggests that macrolides may posses distinct anti-inflammatory properties and even anti-viral properties. These exciting observations have led to research evaluating the use of maintenance therapy with macrolides in patients with asthma and COPD. Small studies in clinically stable asthma or COPD suggest that maintenance macrolide therapy (e.g., use for 6 weeks), when added to usual care, may attenuate airway inflammation, reduce respiratory symptoms, and improve lung function. However, there are no studies that have evaluated the potential benefits of initiating maintenance macrolide therapy during asthma or COPD exacerbations. We hypothesize that initiating maintenance macrolide therapy in hospitalized patients with asthma or COPD exacerbations will, when added to usual medical care, accelerate the improvement in airflow obstruction, respiratory symptoms, and quality of life and reduce the risk of re-exacerbations after discharge home. The objective of this pilot study is to evaluate the feasibility of the study protocol (recruitment, retention, and adherence to study procedures and medications), as well as collect preliminary data about the proportion of exacerbations due to bacterial or viral infections and estimate potential effect sizes for clinically important outcomes (respiratory symptoms, quality of life, airflow obstruction, airway inflammation, and rate of re-exacerbations). To achieve these objectives, we propose a 48 week randomized, double-blind, placebo-controlled crossover clinical trial (24 weeks azithromycin, 24 weeks placebo) in adults hospitalized for asthma or COPD exacerbations to the Johns Hopkins Hospital or Johns Hopkins Bayview Medical Center. ;


Study Design

Allocation: Randomized, Intervention Model: Crossover Assignment, Masking: Double-Blind, Primary Purpose: Treatment


Related Conditions & MeSH terms


NCT number NCT00181272
Study type Interventional
Source Johns Hopkins University
Contact
Status Terminated
Phase Phase 2
Start date September 2005
Completion date July 2006

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