Effect of an Inhaled Glucocorticoid-long-acting Beta Adrenergic Agonist on

Status Withdrawn

Clinical Trial Summary

In the present study, the investigators wish to address the effect of a glucocorticoid/long-acting beta-agonist preparation on endothelial function in COPD patients who do not currently smoke (ex-smokers) by measuring endothelium-dependent (albuterol response) and endothelium-independent (NTG response) vasodilation in the bronchial artery, reflecting endothelium-dependent and endothelium-independent vasodilation (drug-induced increase in Qaw, ΔQaw). With this approach the investigators will test the hypothesis that in stable ICS-naïve COPD patients, endothelium-dependent vasodilation is restored with a glucocorticoid/long-acting beta-agonist preparation, presumably resulting from the glucocorticoid component.

Clinical Trial Description

To test the premise and to characterize the time dependence of the responses, the investigators propose the following two aims:

1. To determine the effect of a medium dose glucocorticoid/long-acting beta-agonist preparation (250 μg fluticasone plus 50 μg salmeterol) administered for 3 weeks on inhaled albuterol and sub-lingual NTG induced vasodilation in the bronchial artery, as assessed by ΔQaw in stable glucocorticoid-naïve COPD patients, and to re-assess the responses after a 3 week glucocorticoid/long-acting beta-agonist washout period.

2. To determine inhaled albuterol and sub-lingual NTG-induced vasodilation (ΔQaw) before, and 30 min and 120 min after a single medium dose of an ICS (220 μg fluticasone) in stable glucocorticoid- naïve COPD patients.

For both aims, the protocol design will be placebo-controlled and double-blind. For the second aim, only fluticasone pretreatment will be possible because the salmeterol component of the fluticasone/salmeterol combination preparation could influence albuterol responsiveness irrespective of any glucocorticoid effect. The timing of the endothelial function measurements in the long-term glucocorticoid/long-acting beta-agonist protocol and single dose ICS protocol is based on the past experience with ICS on airway vascular function. Single dose effects were seen within 15-30 min and waned by 90 min (25,26), while long-term treatment effects were no longer seen 3 weeks after ICS withdrawal (16). ;

Study Design

Allocation: Randomized, Endpoint Classification: Pharmacodynamics Study, Intervention Model: Crossover Assignment, Masking: Double Blind (Subject, Investigator)

Related Conditions & MeSH terms

COPD

Clinical Trial Details

NCT number	NCT01209715
Study type	Interventional
Source	University of Miami
Contact
Status	Withdrawn
Phase	Phase 2
Start date	October 2010
Completion date	May 2012

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

Effect of an Inhaled Glucocorticoid-long-acting Beta Adrenergic Agonist on Endothelial Function in COPD

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms