- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00359073
Effect of Montelukast on Experimentally-Induced RV16 Infection in Asthma
Effect of Montelukast on Experimentally-Induced RV16 Infection in Volunteers With Mild Asthma
People with asthma may have asthma worsening when they have an upper respiratory infection due to a virus or a common cold. Leukotrienes are increased in nasal secretions from children with Respiratory Syncytial Virus (RSV) and lung washings during times of acute lung inflammation. Experimental virus exposure in adults is also associated with increases in nasal leukotrienes.
The degree to which leukotrienes play a role in asthma worsening is unknown.There is information linking leukotrienes to viral infections, allergic inflammation, and asthma exacerbation.This information supports the hypothesis that virus-induced leukotrienes contribute to the severity of respiratory infections and in susceptible individuals, lead to lower airway obstruction and exacerbations of asthma. We propose to use montelukast in an experimental viral challenge model to explore this hypothesis.
Study Overview
Detailed Description
Viral infections are important causes of wheezing illnesses throughout childhood and in adults with asthma. There has been progress in identifying mechanisms and risk factors for severe respiratory symptoms, and in particular, wheezing. Given this close relationship, it would be attractive to apply antiviral strategies to the prevention and treatment of asthma, and both RV and RSV are obvious targets. Unfortunately, attempts at developing an RSV vaccine have so far been unsuccessful, and vaccination to prevent RV infection does not seem to be feasible due to the large number of serotypes. Antiviral medications have been tested in clinical trials, however one problem with this approach is that once the clinical signs and symptoms appear, viral replication is well underway.
The other potential therapeutic approach for respiratory viral infections would be to selectively inhibit pro-inflammatory immune responses induced by the virus. The beneficial effects of systemic glucocorticoids indicate that this approach is valid; the challenge will be to develop treatments with greater efficacy and a reduced potential for adverse effects. The large body of information linking cysteinyl leukotrienes to viral infections, allergic inflammation, and asthma exacerbations, strongly supports the hypothesis that virus-induced leukotrienes contribute to the severity of respiratory infections and in susceptible individuals, lead to lower airway obstruction and exacerbations of asthma. We propose to use montelukast in an experimental viral challenge model to explore this hypothesis.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
Wisconsin
-
Madison, Wisconsin, United States, 53792
- University of Wisconsin
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
A subject with mild persistent asthma is eligible for participation in the study if all of the following inclusion criteria apply:
- Male or female with no health concerns that might affect the outcome of the study
- Age 18-65 range
- diagnosis of mild persistent asthma based on clinical findings such as cough, wheeze and shortness of breath
- a history of asthma for at least six months prior to screening
- FEV1> 80% of predicted
- presence of allergy based on at least one positive prick skin test when tested with a standard panel of common allergens
- ability to produce sputum when induced during the baseline assessments
- asthma medications consisting of only inhaled short acting B-agonist taken as needed
- reversible airways disease as indicated by > 12% reversibility post B-agonist or
- methacholine hyperresponsiveness (PC20 < 8 mg/ml)
- ability to give valid informed consent to participate by signing and dating a written consent form
Exclusion Criteria:
A subject is not eligible to participate in this study if any of the following exclusion criteria apply:
- History of severe episodes of asthma with respiratory infections
- Screening serum RV16 antibody titer > 1
- Current smoker or has a smoking history exceeding 5 pack years
- Currently receiving immunotherapy
- Currently participating in another clinical trial or has participated in an investigational drug trial within one month of screening
- Unable, in the judgment of the investigator, to comply with directions and/or tolerate the procedures required for participation in this trial
- Pregnant or breast-feeding or has a planned pregnancy during the course of the study
- Regular use of an asthma controller such as montelukast or an inhaled corticosteroid.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Quadruple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Placebo Comparator: Placebo
Placebo comparator
|
like placebo
Other Names:
|
Active Comparator: Montelukast
montelukast (10 mg everyday)
|
10 mg everyday
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Mean Asthma Symptom Score
Time Frame: Day 7
|
Asthma symptom scores were assessed twice per day with subjects completing a validated daytime diary card before bed and a nocturnal diary card on awakening.
Subjects answered 4 questions about their asthma symptoms (0, none of the time; 6, all of the time).
Daily score were calculated as the average of the 4 questions and an overall score for the week was assessed as the average of the daily scores.
Time frame measurement was Day 7.
|
Day 7
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Peak Viral Shedding
Time Frame: Baseline and 7 days
|
Viral shedding was measured in both groups.
Viral titers from nasal lavage were calculated after 4 tissue culture tubes containing WI38 cells (human lung diploid cells) were inoculated for each serial 10-fold dilution of samples and incubated while rolling at 33 degrees Celsius for 10 days (measurement for analysis was taken at baseline and 7 days).
Tubes were read at baseline and 7 days later.
TCID50 was calculated as the concentration that was capable of infecting 50% of the tubes.
Viral titers are expressed as TCID50 per milliliter.
Time frame measurement was at baseline and 7 days.
|
Baseline and 7 days
|
Sputum Eosinophil Count
Time Frame: 14 days
|
Sputum was collected from both groups over 14 days after inoculation with the cold virus.
Cell counts and differentials were made from sputum samples after treatment with 0.1% dithiothreitol.
Eosinophils were counted and are expressed as as percentage of cells (percent of the total number counted) at the 14 day timepoint.
|
14 days
|
Collaborators and Investigators
Sponsor
Publications and helpful links
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
- Respiratory Tract Diseases
- Immune System Diseases
- Lung Diseases
- Hypersensitivity, Immediate
- Bronchial Diseases
- Lung Diseases, Obstructive
- Respiratory Hypersensitivity
- Hypersensitivity
- Asthma
- Physiological Effects of Drugs
- Molecular Mechanisms of Pharmacological Action
- Hormones, Hormone Substitutes, and Hormone Antagonists
- Anti-Asthmatic Agents
- Respiratory System Agents
- Leukotriene Antagonists
- Hormone Antagonists
- Cytochrome P-450 CYP1A2 Inducers
- Cytochrome P-450 Enzyme Inducers
- Montelukast
Other Study ID Numbers
- H-2006-0173
- 31799 (Other Identifier: PI)
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Asthma
-
Vanderbilt University Medical CenterNot yet recruitingAsthma in Children | Asthma Attack | Asthma Acute | Acute Asthma Exacerbation | Asthma; StatusUnited States
-
University of California, San FranciscoCompletedAsthma in Children | Asthma Attack | Asthma Acute | Asthma ChronicUnited States
-
SingHealth PolyclinicsNot yet recruitingAsthma | Asthma in Children | Asthma Attack | Asthma Acute | Asthma Chronic
-
Johann Wolfgang Goethe University HospitalCompleted
-
Universita di VeronaCompleted
-
Parc de Salut MarActive, not recruitingAsthma in Children | Persistent Asthma | Asthma ExacerbationSpain
-
Forest LaboratoriesCompleted
-
Brunel UniversityKarolinska InstitutetUnknown
-
Value Outcomes Ltd.AstraZenecaCompletedAsthma, Bronchial | Bronchial Asthma | Asthma Chronic | Asthma; EosinophilicCzechia
Clinical Trials on montelukast
-
Indiana UniversityCompleted
-
Chinese University of Hong KongUniversity of Sydney; Chongqing Medical University; Hong Kong University of Science... and other collaboratorsNot yet recruitingAtherosclerosis, CoronaryHong Kong
-
GlaxoSmithKlineCompleted
-
Kecioren Education and Training HospitalCompletedAsthma | Acute AsthmaTurkey
-
Menarini International Operations Luxembourg SACompletedAsthma | Seasonal Allergic RhinoconjunctivitisPoland, Romania, Germany, Italy, Czechia, Latvia, Croatia, Slovakia
-
Organon and CoCompleted
-
GlaxoSmithKlineCompletedRespiratory Disorders | Asthma and RhinitisIndia
-
Medical University of LodzUnknownSeasonal Allergic RhinitisPoland
-
Qilu Pharmaceutical Co., Ltd.Completed
-
Kecioren Education and Training HospitalCompletedAcute Asthma | Acute Wheezy BronchitisTurkey