View clinical trials related to Tobacco Dependence.
Filter by:Background. The ROSCAP Study was a randomized controlled trial in heart disease patients to test the effect of a smoking reduction intervention on cigarettes per day (cpd) and biochemical and clinical indicators of tobacco exposure. .
The information gathered in this study may help to develop more effective ways to help people quit smoking and stay quit in the future.
Despite preclinical evidence supporting the role of the endogenous opioid system in the reinforcing effects of nicotine, the efficacy of the opioid antagonist naltrexone (NTX) as a tobacco dependence treatment remains unresolved. Research is needed to identify those smokers for whom NTX will have the strongest beneficial effects on smoking behavior. The research bridges existing knowledge of genetic, pharmacologic, and behavioral responses to nicotine, and translates this knowledge to treatment for tobacco dependence. The immediate goal was to test whether genetic variation in the mu-opioid receptor gene predicts the effects of naltrexone (NTX) on nicotine reinforcement.
The purpose of this study is to determine: 1) the short-term clinical efficacy and safety of bupropion for helping adolescent tobacco smokers quit, and 2) The role of withdrawal symptoms in the maintenance of smoking in adolescents.
Smoking is the number one preventable cause of morbidity and mortality in this nation. Unfortunately, more than 50% of those who quit following a smoking cessation intervention typically relapse within two weeks, with approximately 80% relapsing within six months. Therefore, tobacco use can be conceptualized as a chronic condition. As with many chronic medical problems, tobacco use interventions may benefit from a step care approach to treatment. A total of 400 adult smokers will be enrolled in the study. Participants will be randomly assigned to one of two treatment conditions consisting of: 1) A State of the Art Smoking Cessation Intervention + Recycling or: 2) A State of the Art Smoking Cessation Intervention + Step Care. Long term smoking cessation will be assessed by self-report, exhaled carbon monoxide levels, and salivary cotinine. The primary endpoint of the study will be smoking abstinence rates at two-year follow-up. It is predicted that long-term cessation rates will be significantly higher in the step care condition than for those assigned to the recycling group.
In this study we, the investigators at the Centre for Addiction and Mental Health, intend to explore whether bupropion is able to reduce smokers' responses to cigarette-related environmental cues, and craving. Previous studies have indicated that bupropion may be able to achieve these outcomes. Therefore, we predict that smokers treated with bupropion for several weeks will show reduced reactivity to cigarette cues and craving.