- ICH GCP
- Registre américain des essais cliniques
- Essai clinique NCT00747643
Varenicline Effects on Cue Reactivity and Smoking Reward/Reinforcement
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Description détaillée
We proposed the following primary hypotheses:
- Tonic (i.e., non-cue-provoked) craving levels would be lower in participants receiving varenicline versus placebo.
- Cue-provoked cravings (self-report and physiological responding) would be lower in participants receiving varenicline versus placebo. (Secondary indices of craving include heart rate and skin conductance.)
- The two primary indices of nicotine reward/reinforcement (mCEQ and choice index) would be lower in participants receiving varenicline versus placebo. (Secondary indices of nicotine reinforcement include smoking topography variables.)
A final sample of 100 non-treatment seeking daily smokers were recruited from the Tampa-St. Petersburg-Clearwater Metropolitan Area via paid advertisements in, and press releases to, local newspapers, as well as targeted outdoor advertising via flyers (e.g., on public transportation).
Following the screening session, participants were randomly assigned to receive either varenicline or placebo medication.
Type d'étude
Inscription (Réel)
Phase
- N'est pas applicable
Contacts et emplacements
Lieux d'étude
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Florida
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Tampa, Florida, États-Unis, 33612
- H. Lee Moffitt Cancer Center and Research Institute
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Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
La description
Inclusion Criteria:
- 18-60 years of age
- Smoke at least 15 cigarettes daily
- Expired-air carbon monoxide (CO) > 10 ppm
- Medically eligible to receive Varenicline.
Exclusion Criteria:
- Patients who are pregnant or lactating
- Who show evidence of renal dysfunction (BUN > 25 mg/dL, or creatinine > 1.3 mg/dL)
- Are using other smoking cessation medications
- Have current psychiatric disorders (i.e. major depression, manic depression, and/or psychotic episodes) as determined by the Structured Clinical Interview for DSM Disorders (SCID) (First et al., 1996), will be excluded
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Répartition: Randomisé
- Modèle interventionnel: Affectation parallèle
- Masquage: Tripler
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
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Comparateur actif: Varenicline
For participants in the varenicline group, the medication doses followed the recommended dose schedule for the first 15 days of treatment: 0.5 mg once a day on days 1-3, 0.5 mg twice a day on days 4-7, and 1 mg twice a day on days 8-15.
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Participants in this group received varenicline according to the schedule in the Arm Description.
Autres noms:
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Comparateur placebo: Placebo
Participants in this group received a placebo instead of medication.
The placebo was taken once a day on days 1-3, twice a day on days 4-15.
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Participants in this group received a placebo and did not receive any active medication according to the schedule in the Arm Description.
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Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Tonic Craving Score (QSU) Based on Self Reports
Délai: 3 weeks per participant
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Tonic Craving 1 (lowest) to 7 (highest).
The Questionnaire of Smoking Urges (QSU), our primary measure of tonic craving, is a 32-item instrument, including 2 separate factor scales that roughly correspond to the desire to smoke for its pleasurable effects (positive reinforcement) or to remove unpleasant feelings of negative affect or withdrawal (negative reinforcement) (Tiffany and Drobes 1991).
Following overnight abstinence, each session included assessment of tonic craving, reactivity (including craving) to smoking cues.
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3 weeks per participant
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Cue-provoked Cravings
Délai: 3 weeks per participant
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Strength of Craving 0 (lowest) to 20 (highest).
One item 0 - 20 Likert scale "How strong was your craving to smoke a cigarette?"
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3 weeks per participant
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Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Smoking Topography - Number of Puffs on a Cigarette
Délai: 3 weeks per participant
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# Puffs = total number of puffs taken at Assessment Session.
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3 weeks per participant
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A Measure of the Subjective Expected Value of a Cigarette
Délai: 3 weeks per participant
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The cigarette choice procedure (Kidorf, Stitzer, and Griffiths, 1995) is a measure of the desire to smoke a cigarette.
Participants are asked to hypothetically choose between smoking a cigarette now or receiving a small amount of money (from 10 cents up to $6 in increments of 10 cents).
A crossover ($) value, at and above which participants prefer money, is obtained (Reid, Palmar, Raghavan, and Flammino, 2007).
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3 weeks per participant
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Collaborateurs et enquêteurs
Collaborateurs
Publications et liens utiles
Liens utiles
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude
Achèvement primaire (Réel)
Achèvement de l'étude (Réel)
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
- Les troubles mentaux
- Troubles induits chimiquement
- Troubles liés à une substance
- Trouble lié à l'usage du tabac
- Effets physiologiques des médicaments
- Agents neurotransmetteurs
- Mécanismes moléculaires de l'action pharmacologique
- Agents cholinergiques
- Agonistes nicotiniques
- Agonistes cholinergiques
- Varénicline
Autres numéros d'identification d'étude
- MCC-15444
- 106842 (Autre identifiant: USF IRB)
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