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Acute Effect of Mometasone on Beta-adrenergic Airway and Airway Vascular Relaxation in Severe Asthma

NCT01210170 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 22

Last updated 2017-11-21

Study results available
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Summary

Glucocorticosteroids inhibit the disposal of organic cations by blocking organic cation transporters expressed by non-neuronal cells, thereby interfering with the inactivation of the organic cations by intracellular enzymes. Beta2-adrenergic agonists are organic cations, and the concentration of inhaled beta2-adrenergic agonists at beta2-adrenergic receptor sites on smooth muscle is likely to be increased by inhaled glucocorticosteroids (ICS) by the ICS' effect on the glucocorticosteroid-sensitive organic cation transporters. The investigators have shown in human airway vascular smooth muscle cells that the glucocorticosteroid action on organic cation uptake occurs within minutes, does not involve gene transcription or protein synthesis, is not mediated through classical steroid receptors, and is cell membrane-linked.

In the present proposal, the investigators wish to use different single doses of mometasone, a clinically effective ICS, administered with or at different times before albuterol inhalation in subjects with moderate persistent asthma who are obstructed at the time of study.

With this approach the investigators will test the hypothesis that a single inhalation of mometasone causes an acute, transient, dose-dependent potentiation of beta2-adrenergic bronchodilation.

If the hypothesis that a single dose of mometasone acutely potentiates beta2-adrenergic bronchodilation is correct, the results would have a significant impact on treatment strategies involving ICSs and beta2-adrenergic agonists in patients with asthma.

Conditions

Interventions

DRUG

placebo

placebo inhalation before albuterol.

DRUG

mometasone 400 mcg

mometasone inhalation before albuterol.

DRUG

mometasone 200 mcg

200ug mometasone before albuterol.

Sponsors & Collaborators

Principal Investigators

  • Adam Wanner · University of Miami

Study Design

Allocation
RANDOMIZED
Purpose
OTHER
Masking
DOUBLE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
65 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2010-10-31
Primary Completion
2013-02-28
Completion
2013-02-28

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01210170 on ClinicalTrials.gov