View clinical trials related to Tobacco Use Disorder.
Filter by:N-acetylcysteine is an inexpensive agent with a benign side effect profile with preliminary studies in humans suggesting efficacy for the treatment of cocaine dependence. N-acetylcysteine has been used in clinical medicine for nearly three decades to treat chronic lung conditions, acetaminophen overdose, and experimentally to treat cocaine dependence. It is generally safe and well tolerated. The present pilot study seeks to explore safety and tolerability, ad lib smoking, visual cue reactivity, and smoking reduction rates in a group of nontreatment seeking, nicotine dependence smokers who are willing to undergo a brief trial with oral N-acetylcysteine 1200 mg twice daily.
The objective of this proposal is to elucidate effects of bupropion SR + varenicline on smoking-cessation related processes in early abstinence using a human laboratory model. A within-subjects design will be used to assess the additive effects of bupropion and varenicline in 48 treatment seeking smokers [bupropion SR (300 mg/day)+placebo, varenicline (2 mg/day+placebo, and bupropion SR (300 mg/day)+varenicline (2 mg/day)]. Outcomes include withdrawal and craving, cognition, stress tolerance, anxiety, the reinforcing effects of smoking, and smoking topography. Hypotheses: We hypothesize that greatest treatment effects will be observed in the bupropion SR+varenicline group followed by varenicline+placebo and bupropion SR+placebo groups.
Airway dendritic cells control pulmonary immune responses to inhaled particles. It is the aim of the present study to investigate the acute effects of smoking on the number and surface molecule expression of human airway dendritic cells.
The overall goal of the present project is to investigate whether lisdexamphetamine (LDX; Vyvanse) is an effective adjunct to nicotine replacement therapy (NRT) to promote smoking cessation in patients with comorbid Attention Deficit Hyperactivity Disorder (ADHD) and nicotine dependence. The investigators hypothesized initially that smokers with ADHD who are optimized to a dose of LDX prior to quitting smoking and who remain on this dose of medication after quitting will remain abstinent longer than patients who are treated with placebo before and after quitting.However due to recent key issues that have arisen showing that initiation of stimulant treatment while subjects are actively smoking may facilitate increased smoking, and given that the study was still in the very early stage of study execution, the investigators revised the study design to use an empirically validated pretreatment approach with NRT and to initiate LDX treatment on the first post quit date in order to reduce the withdrawal symptoms that accompany smoking cessation. The overall rationale for this revised study design remains similar to the original.
The investigators hypothesize that varenicline will dose dependently attenuate the subjective effects of cigarettes after a period of abstinence. Also, treatment with varenicline will dose dependently weaken the severity of nicotine withdrawal symptoms. Thirdly, we hypothesize that treatment with varenicline will dose dependently decrease cigarette self-administration in the model proposed.
The aim of the proposed pilot study is to find out whether varenicline (ChantixTM) treatment decreases alcohol use and smoking in patients with schizophrenia or schizoaffective disorder. Varenicline may also improve cognition (memory and concentration) and negative symptoms (e.g. poor attention, poverty of speech, apathy, affective flattening, anhedonia) in patients with schizophrenia and comorbid nicotine and alcohol dependence.
Recently, tobacco companies have developed new oral tobacco products that are purportedly less harmful than conventional tobacco products. These products have not been tested by independent research for their health effects or consumer palatability. In addition, it is not known if these products will be used in addition to cigarette smoking or as a substitute to cigarettes. These two studies will examine four oral tobacco products to answer some of these questions. The goals of this first study will be to examine: 1) the brand of oral tobacco products which is preferred by cigarette smokers and the pattern and amount of product use when used as a switching tool; 2) the characteristics that are associated with product choice; 3) nicotine exposure from these products; and 4) the withdrawal symptoms from the tobacco products and potential for continued use. Specifically, our primary aims hypotheses were: 1) the product that will be chosen by most smokers will be based on taste and sensory aspects of the product with products higher in nicotine content more likely to be chosen as the preferred product; and 2) subjects will experience no difficulty using the product for complete cigarette substitution, but a small minority will engage in dual product use. For the secondary aims, we hypothesized: 1) that compared to the subjects' own brand of cigarettes, the biomarkers for exposure for the oral tobacco products will be significantly lower; 2) withdrawal symptoms from the oral products are likely to occur, but are likely to be mild compared to cigarette withdrawal.
For the primary goals, we hypothesize that 1) the oral tobacco product will be more efficacious than the medicinal nicotine product in substituting for smoking cigarettes; 2) among non-abstainers, the oral tobacco product will lead to greater reduction in cigarette smoking than medicinal nicotine; and 3) a higher rate of oral tobacco compared to medicinal nicotine use will be observed during and beyond the treatment period. For the secondary goals, we hypothesize that 1) both products will equally reduce withdrawal symptoms from cigarette abstinence; and 2) the toxicant exposure and toxicity will be reduced dramatically when smokers switch from cigarettes to each of these products; however, this reduction will be greater with the use of medicinal nicotine.
The purpose of this study is to test the ways that a drug called varenicline helps smokers to quit smoking. Varenicline is also called Chantix® and is approved by the United States Food and Drug Administration (FDA) to help people quit smoking. We will test how varenicline works by having you quit smoking and complete tasks that assess how you think and feel. We predict that varenicline help reduce anxiety, improve attention and concentration, and reduce how satisfying cigarettes are.
RATIONALE: Chemoprevention is the use of certain drugs to keep cancer from forming. The use of phenethyl isothiocyanate may prevent lung cancer in people who smoke cigarettes. PURPOSE: This randomized clinical trial is studying phenethyl isothiocyanate to see how well it works in preventing lung cancer in smokers.