- ICH GCP
- Registre américain des essais cliniques
- Essai clinique NCT00615407
A Pilot Evaluation of the Impact of Alcohol Use on Airway Inflammation and Mechanics in Asthmatics (AIM Asthma)
Since 1980, the number of people in the United States diagnosed with asthma has increased dramatically. Studying what causes and triggers asthma is an important part of understanding and subsequently managing this disease. Although some have suggested that alcohol consumption may affect asthma, little is known about how consistent alcohol use affects the amount of inflammation present in the lungs and whether consistent alcohol use makes the airways more narrow and stiff.
Participation in this study involves 2 visits in order to complete questionnaires, various pulmonary function tests, as well as the collection of blood, urine, and exhaled breath condensate specimens.
This study includes optional genetic and bronchoscopy substudies.
Aperçu de l'étude
Statut
Les conditions
Type d'étude
Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
Méthode d'échantillonnage
Population étudiée
La description
Inclusion Criteria:
- 18 to 65 years of age
- Literate in English (i.e., read study materials at 6th grade level) so as to understand, and complete the ratings scales and questionnaires accurately
- Physician-diagnosed asthma requiring treatment in the past year with a post bronchodilator FEV1/FVC >0.70 and at least 12% reversibility after bronchodilator usage
- Alcohol usage groups: 1) those who rarely or who do not drink alcohol (≤2 drinks per month); or 2) those who drink 3 or more alcoholic beverages per day on average
Exclusion Criteria:
- Social drinkers (>2 drinks in a month but <3 drinks per day)
- Asthma exacerbation within the past month
- Current upper respiratory infection
- Active allergies with uncontrolled symptoms
- Current DSM-IV diagnosis of illicit substance dependence (not alcohol)
- History of serious pulmonary problems other than asthma
- Other significant non-pulmonary comorbidities
- Pregnancy or currently lactating
- Daily use of Prednisone or other corticosteroids
- Tobacco smoking within the past year or >10 life-time pack-years of smoking
- Positive breath alcohol level at the time of the study assessments
- Positive urine cotinine test at enrollment (indicates nicotine usage)
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
Cohortes et interventions
Groupe / Cohorte |
---|
Alcohol Drinkers
Asthmatics who consume 3 or more alcoholic beverages per day (on average)
|
Non Drinkers
Asthmatics who do not drink alcohol or consume less than or equal to 2 alcoholic beverages per month
|
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Délai |
---|---|
Measurements of airway oxidative stress (increased GSSG/GS, and RNS/NO ratios and higher exhaled 8-isoprostanes levels)
Délai: single timepoint
|
single timepoint
|
Mesures de résultats secondaires
Mesure des résultats |
Délai |
---|---|
Measurements of lung function (spirometry, response to methacholine challenge, and impulse oscillometry).
Délai: single timepoint
|
single timepoint
|
Asthma symptoms and control through standard asthma questionnaires
Délai: single timepoint
|
single timepoint
|
Collaborateurs et enquêteurs
Parrainer
Collaborateurs
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Estimation)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Estimation)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Mots clés
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- IRB00001136
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