Active clinical trials for "Tobacco Use Disorder"

RATIONALE: A study that evaluates participants' beliefs about smokeless tobacco products and nicotine replacement therapy may be useful in helping smokers stop smoking. PURPOSE: This clinical trial is studying the acceptability of less harmful alternatives to cigarettes.

The purpose of this study is to better characterize differences in mood, attention, brain activation patterns underlying the beneficial effects of pharmacological treatments previously demonstrated to be help individuals successfully quit tobacco smoking. Smokers will be randomly assigned to one of three treatments: 1) bupropion sustained release (SR), 2) nicotine patch, or 3) placebo patches plus pills across a 45-day period with a 3-week intensive post-treatment follow-up. In addition, 20 percent of the subjects will be randomized to a delayed-quit control group.

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. .

RATIONALE: Exercise may help improve lung function and lessen complications of surgery in patients with chronic obstructive pulmonary disease who are undergoing surgery for lung cancer. It is not yet known whether lung rehabilitation is more effective than standard therapy in improving lung function in patients with chronic obstructive pulmonary disease who are undergoing surgery for lung cancer. PURPOSE: This randomized clinical trial is studying lung rehabilitation to see how well it works compared to standard therapy in treating patients with chronic obstructive pulmonary disease who are undergoing surgery for lung cancer.

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.

The proposed study will help fill gaps in existing research by determining if nicotine-dependent cigarette smokers show changes in α7 nicotinic acetylcholine receptor (nAChR) availability when compared to matched historical controls using positron emission tomography (PET) imaging and the radioactive ligand [18F]-ASEM (3-(1,4-diazabicyclo[3.2.2]nonan-4-yl)-6 [18F]fluorodibenzo[b,d]thiophene 5,5-dioxide), an α7 nAChR antagonist. The study will also explore whether α7 nAChR availability influences clinically relevant measures of tobacco abstinence (e.g., withdrawal and craving, cognitive impairment), self-reported cigarettes per day, and time to relapse during an 8-day quit attempt during which smokers can receive escalating payments contingent upon providing objective evidence (breath CO and urinary cotinine) of smoking abstinence.

This study aims to assess the feasibility, acceptability, and the potential harm reduction of switching to potentially lower risk, oral nicotine pouches in adult smokers. Part One of this study aims to assess the interest of current smokers in switching to an e-cigarette device (i.e. JUUL) compared to alternative non-combustible tobacco products (i.e. smokeless tobacco/snus) and/or medicinal nicotine via survey. Part Two will consist of a pilot study of 30 non-treatment seeking adult smokers to investigate within-person changes in smoking behavior as a result of switching to different concentrations of oral nicotine pouch products (i.e. ZYN, 3mg and 6mg nicotine concentration). Additionally, by measuring bio-markers of tobacco exposure from baseline, this will allow the study to assess the potential for harm reduction in switching from cigarettes to oral nicotine pouches.

This study seeks to elucidate the impact of e-cigarette flavor on subjective effects and nicotine exposure from e-cigarettes containing different forms of nicotine.

A Randomized Study Comparing Nicotine Pharmacokinetics of Seven Electronic Cigarette Products and One Traditional Cigarette Across Two Delivery (10 puff and ad- libitum) Conditions, in Healthy Adult Smokers

This proposal will obtain preliminary data on the effect of a single sub-anesthetic dose of a sedative on cigarette craving and smoking behavior as well as measuring tolerability and acceptability.