Active clinical trials for "Tobacco Use Disorder"

The purpose of this research study is to examine the effects of theta-burst Transcranial Magnetic Stimulation on inhibitory control and smoking among adult cigarette smokers. In a double-blind, sham controlled trial, investigators will examine the effects of 12 sessions of cTBS on executive function and smoking behavior.

This is a multi-arm, randomized controlled, pilot study which will recruit cancer patients who have been seen by a UCSF Cancer Center-affiliated clinical department to evaluate the efficacy of "CareConnect". This is the first study to assess the efficacy CareConnect, a combination of the Ask-Advise-Connect (AAC) with an Interactive Voice Response (IVR) delivering cancer-targeted educational messages to support referral to smoking cessation resources for patients with cancer.

In a crossover study, experienced electronic cigarette users will vape 3 different forms of nicotine: natural (derived from tobacco), synthetic, or a 50:50 mixture of both natural and synthetic. The investigators will compare nicotine metabolism, cardiovascular effects, patterns of self-administration, and participants' feelings of craving/withdrawal and enjoyment.

The goal of this clinical trial is to test a GPS (Global Positioning System)-enabled smartphone app (QuitBuddy) in current smokers. The main questions it aims to answer are: Is Quitbuddy a good treatment for quitting smoking and "staying quit"? Will a second treatment that connects people to help for their social and financial needs improve Quitbuddy? Participants will: get nicotine lozenges in the mail check in with the study team to report on their quitting progress after 1 day, 1 week, 1 month, 2 months, 3 months, and 6 months Researchers will compare Quitbuddy to an app made by the National Cancer Institute to see if Quitbuddy is better for helping people stay quit.

Objective: To evaluate the impact of heated versus combustion tobacco products on progression of atherosclerosis in patients with CAD unable(unwilling) to quit smoking. Rationale: Despite the efforts to curb smoking and full awareness of its deleterious health impact, smoking remains a significant contributor to morbidity and mortality. Some health impact of smoking may be improved by other forms of cigarettes than traditional combustion, especially for subjects unwilling or unable to stop smoking. As recently as 2020, one of heated tobacco products (HTP)(IQOS) was FDA Authorized as a 'Reduced Exposure' product. The available evidence to date allows to conclude that the IQOS system heats tobacco but does not burn it, which significantly reduces the production of harmful and potentially harmful chemicals. Scientific studies have shown that switching completely from conventional cigarettes to the IQOS system significantly reduced body's exposure to harmful or potentially harmful chemicals. There is also evidence indicating lower levels of inflammatory markers and improved vascular function associated with use of heated tobacco products. However, it is unknown whether the reduction in the exposure translates into potential reduction of harm within cardiovascular system, as compared to the traditional (combustion) cigarettes. The evidence is of crucial importance for patients with cardiovascular diseases, medical community, and national health authorities planning evidence based policies regarding HTP/cigarettes.

The overall hypothesis of this line of research is that varenicline will decrease alcohol consumption and tobacco use and will increase alcohol and tobacco abstinence rates. In order to explore this hypothesis, the investigators will conduct a two-phase study: 1) an open label pilot study investigating the effect of varenicline on reduction of and abstinence from alcohol and tobacco; and 2) an optional MR spectroscopy to investigate whether glutamate and other brain metabolites correlate to measures of alcohol craving severity and/or subsequent varenicline treatment response.

The purpose of this small preliminary study is to determine whether it is feasible to recruit women smokers who have just delivered a baby and are not breastfeeding into a study that would test whether starting bupropion, a smoking cessation medication, after a baby's birth helps a postpartum woman to stop smoking.

Cigarette smoking causes significant morbidity and mortality in the United States. Smoking cessation is difficult, with the average smoker attempting to quit five times before permanent success. Moreover, the majority of smoking quit attempts result in relapse. Brain stimulation for smoke cessation is an exciting new area that builds on advancing neuroscience knowledge concerning the functional neurocircuitry of addiction. Cortical stimulation can now be performed non-invasively by transcranial magnetic stimulation (TMS). Several studies have shown that TMS can reduce cue-elicited craving in smokers. Previous research by group has shown that a single session of 15 minutes high frequency (10 Hz) repetitive TMS (rTMS) at 100% motor threshold over the left dorsal lateral prefrontal cortex (DLPFC) can reduce cue-induced craving compared to sham TMS. However, the mechanism by which craving is reduced by rTMS is poorly understood both at behavioral and neural levels. Neuroimaging studies in nicotine dependence have revealed cue-related responses in numerous brain areas, including frontal, parietal cortices and subcortical areas. Recently functional magnetic resonance imaging (fMRI) studies by the group have shown that cue-induced craving induced brain activation in ventral medial prefrontal cortex (VMPFC), including medial frontal, orbital frontal and anterior cingulate. This Chair Research Development Fund (CRDF) pilot proposal will integrate two new techniques- TMS and fMRI to investigate DLPFC-VMPFC pathway in smokers. Using double-masked methods investigators hypothesize that cue-induced exposure will induce brain activity in VMPFC, and 15 minutes rTMS over DLPFC will reduce cue-induced craving through modulating DLPFC-VMPFC pathway (increased activity DLPFC and decreased activity VMPFC).

Compare the relative efficacy of ten weeks of once weekly 250 mg D-cycloserine (DCS) vs. placebo (both in conjunction with cognitive behavioral therapy (CBT) and nicotine replacement therapy (NRT) on reducing cigarette smoking in treatment-seeking nicotine-dependent outpatients. Compare the relative efficacy of ten weeks of once weekly 250 mg DCS vs. placebo on the process of extinction and the memory encoding process.

The purpose of this study is to examine whether tobacco affects recovery from PTSD. There are 3 goals of the study; (1) to test if quitting tobacco prior to PTSD treatment affects treatment success, (2) to test how PTSD symptoms change in those who have quit tobacco compared to those who continue to use and (3) to explore how tobacco use and tobacco withdrawal symptoms change during PTSD treatment.