203 Clinical Trials for Various Conditions
Safety assessment of long-term 3 mg cytisinicline three times daily (TID) exposure for 52 weeks is the main purpose of this study, conducted in the United States.
The purpose of this study is to assess the feasibility and safety of injectable naltrexone (NTX;380 mg) in conjunction with oral bupropion (BUP; 450 mg daily)NTX-BUP administration among individuals with schizophrenia spectrum disorders that smoke cigarettes and to evaluate change on smoking-related measures and symptoms of schizophrenia.
This between-subjects study aims to evaluate whether e-cigarettes (ECIGS) versus oral nicotine pouches (ONPS) more readily substitute for combustible cigarettes among 200 cigarette smokers. After measuring baseline cigarette smoking rate, participants will be randomized to ECIGS or ONPS and be instructed to switch (versus smoking cigarettes) over a 6-week period. Relative reductions in biomarkers of exposure will be measured. ECIG- and ONP-associated subjective reward and the reinforcing value of ECIGS and ONPS relative to combustible cigarettes will be assessed as mechanisms.
The purpose of the proposed study is to examine the feasibility of integrating a smoking harm reduction program featuring provision of e-cigarettes and tailored instructions to switch into an existing substance use disorder treatment program. This longitudinal study includes three weeks of micro-surveys delivered via text messages to evaluate the intervention's feasibility and acceptability, gather initial effectiveness data, and understand participants' lived experience of smoking and vaping while engaged in substance use disorder treatment.
This clinical trial evaluates the effectiveness of active episodic future thinking (EFT) stimuli for reducing cigarette consumption in cigarette smokers. EFT is an innovative framing method shown to significantly activate brain regions involved in future thinking, planning, and other executive functions. Active EFT stimuli are positive events, unrelated to smoking, that participants anticipate, look forward to, and can vividly imagine happening up to 1 year in the future. Control EFT stimuli are positive past events, unrelated to smoking, that participants can vividly remember happening in the recent past. Active EFT stimuli may help reduce cigarette consumption among cigarette smokers by exposing them to personally relevant future oriented stimuli.
This clinical trial studies the effect of free-base compared with nicotine salt based e-liquids on electronic cigarette (EC) puffing behavior, abuse liability, and deposition and absorption of nicotine in the respiratory tract and rate of uptake in the brain in current EC smokers. The results from this study may provide much needed scientific information to public health officials and regulators.
This study investigates whether providing 8 weeks of complimentary electronic cigarettes (EC) or nicotine pouches (NP) to low socioeconomic status (SES) adults who smoke and are unable or unwilling to quit smoking will lead to: a) substitution of cigarette smoking with EC or NP; and b) reduced biological indicators of tobacco use and harm relative to those continuing to smoke as usual. This study also examines the feasibility and acceptability of providing EC or NP to help substitution of combustible cigarettes, exploring willingness to participate, continuing with the study, and barriers to substitution through interviews. This project will enroll 45 low SES adults who smoke and will be randomized to one of the three groups that will be followed for 8 weeks: EC, NP, or smoking as usual. The first study hypothesis is that participants receiving EC or NP will smoke fewer cigarettes per day and have lower cigarette dependence at Week 8 relative to their baseline level, and when compared to the control group. The second hypothesis is that those in the EC or NP group will have greater cigarette abstinence than those smoking as usual at Week 8. There are no anticipated differences between those receiving EC and NP. The third hypothesis is that biological indicators of tobacco use and harm will be lower in those receiving EC or NP relative to their baseline level, and when compared to the control group. The hypothesis is that these biological indicators will be lower in those receiving NP than EC.
The proposed study will evaluate sex differences in whole-brain glutamate (Glu), with a focus on the dorsal anterior cingulate cortex (dACC), anterior insula, and thalamus, as well as how it is influenced by sex (males vs. females), smoking state (overnight abstinent vs. sated), and circulating ovarian hormones (estrogen and progesterone) in women. Glu will be measured in almost the entire brain, with special focus on the dorsal anterior cingulate cortex (dACC), anterior insula, and thalamus, all of which have been implicated in behavioral states linked to tobacco withdrawal, using an echo-planar spectroscopic imaging (EPSI) variant of magnetic resonance spectroscopy (MRS). Serum ovarian hormones (estrogen and progesterone) will be measured for female participants to determine relationships between brain Glu and this hormone. Whole-brain Glu will be measured in 60 smokers (30 men, 30 women) twice, after overnight (\~12 h) abstinence and after participants smoke the first cigarette of the day.
Despite widespread awareness of significant negative health consequences, cigarette smoking remains the leading cause of preventable morbidity and mortality in the US (Creamer et al., 2019; Jamal, 2018). Moreover, the highest rate of smoking and heaviest burden of smoking-related illness occurs among low-socioeconomic status (SES) individuals relative to higher SES groups (Businelle et al., 2010; Clegg et al., 2009). Low SES individuals are also 40% less likely to succeed in quitting smoking when they attempt to do so (National Center for Chronic Disease Prevention and Health Promotion (US) Office on Smoking and Health, 2014). One potential explanation for the disparity in rate of smoking and successful quit attempts may be differences in individual rates of delay discounting (DD), i.e., the degree to which rewards loses their value as the delays to their receipt increase (Odum, 2011). A proposed way to reduce steep DD and, potentially, substance use has been computer training for working memory, which has shown favorable results in a sample of individuals with stimulant dependence (Bickel et al., 2011) and substance use broadly (Felton et al., 2019), with the latter even showing decreases in cigarette smoking in a subset of the sample.
The present study will investigate the effects of choice bundling, in which a single choice produces a series of repeating consequences, on valuation of delayed monetary gains and losses in an online panel of cigarette smokers.
This study is designed to evaluate plasma nicotine pharmacokinetic (PK) parameters following the use of nicotine pouches in cigarette smokers who have experience with use of smokeless tobacco (SST) \[e.g., snus, moist snuff\].
This clinical trial collects data to see how filter ventilation and ventilation information affects product use behaviors in cigarette smokers. Providing ventilation information on the cigarette package may affect smokers' rating of product appeal, perceptions of health risk, and changes in cigarette consumption.
This research study will evaluate the preliminary efficacy of Pride Posts Plus, a social media-based smoking cessation treatment. A pilot randomized trial (N=120) will compare Pride Posts Plus, which includes a gamification element, to Pride Posts (without gamification) and to a usual care treatment. Participants will be adults who smoke, identify as sexual or gender minorities, and use Facebook. The primary outcome will be biochemically verified 7-day abstinence from smoking at 3 and 6 months. Secondary outcomes will be treatment engagement, a quit attempt (y/n), and thoughts about tobacco abstinence at 3 and 6 mos.
This trial examines the effects of filter ventilation on sensory response, smoking topography, and inhalation in current every day cigarette smokers. The physical design features of cigarettes directly impact their appeal by influencing cognitive and sensory perceptions. The introduction of a now common design feature, filter ventilation, has led to greater public harm than benefit because of the potential for greater toxicity while enhancing product appeal among smokers. Ventilated cigarettes dilute smoke, which promotes perceptions of ?smoothness? and therefore lower health risk, contributing to the overall appeal of these products. The purpose of this study is to assess whether removing ventilation from cigarette filters lowers cigarette product appeal among smokers.
This grant compares the effects of cigarette smoking, protonated nicotine ("salt") aerosol through an Electronic Nicotine Delivery System (ENDS), and unprotonated nicotine aerosol through an ENDS on nicotine delivery, nicotine craving, and other outcomes in cigarette smokers.
The FDA has shown clear interest in strategies that will reduce the public health burden of tobacco use. One proposed strategy includes banning the sale of fully nicotinized cigarettes and only allowing VLNCs (Very Low Nicotine Cigarettes) to be sold. While there are concerns regarding the unintended consequences (e.g., black market sales of fully nicotinized cigarettes) of such bans, research is needed to understand how smokers and dual users will act in the potential market. The overall aim of the current research is to understand purchasing and product choice behaviors of tobacco/nicotine users if the proposed ban were to go into effect.
This trial uses an Experimental Tobacco Marketplace to study the purchase of tobacco products in menthol cigarette smokers. Determining the level of substitutability of both flavored and unflavored/tobacco flavored e-cigarettes when menthol cigarettes are available and unavailable can help determine if a flavor ban (of either menthol cigarettes and/or flavored e-cigarettes) will lead to smoking cessation and/or harm reduction. A greater understanding of tobacco product purchasing could help inform possible regulatory actions by the Food and Drug Administration.
The purpose of this research study is to find out how different types of electronic cigarettes (ECIG) settings, combined with e-liquids of differing nicotine concentrations, affect blood nicotine levels, use behavior (how users puff), and how users feel.
The purpose of this study is to determine differences in nicotine delivery, user behavior, subjective effects, and physiological effects, when cigarette smokers use an two new electronic cigarette devices (JUUL and IQOS) relative to their using their own brand of cigarettes.
The primary goal of this study is to examine whether cigarette smokers can reduce their use of conventional, combustible cigarettes by switching to a Standardized Research E-Cigarette (SREC); whether participants can maintain these reductions and use of SRECs over a 12-week period; and whether there are changes in subjective and objective measures of health, appeal and acceptability of the products used during this time frame.
Electronic cigarettes (EC) are battery powered nicotine delivery devices that aerosolize nicotine and other flavor constituents. Despite the increasing use of EC, little attention has been paid to their possible adverse effects on human health. Theoretically, the risk relates to nicotine per se and/or the propellants or contaminants in the EC aerosol. The hypothesis underlying the proposal is that chronic EC smoking disorders the biology of the oral epithelium, the first cell population exposed to inhaled EC vapors. Using a cross-sectional, cohort-comparison of EC smokers compared to age-, gender- and ethnicity-matched never smokers, the investigators propose to assess the oral epithelium obtained by punch biopsy or brushing from 100 EC smokers and 25 nonsmoker controls. The EC study cohort will be restricted to young adults (age 21-35 yr) with no prior history of tobacco smoking, but who have smoked EC for \>6 months.
The purpose of this pilot study is to evaluate allergen-induced nasal airway inflammation following nasal application of Dermatophagoides farinae (Der f), or house dust mite, extract in e-cigarette users, cigarette smokers, and non-smokers.
This trial studies what would happen if the nicotine levels in cigarettes are greatly reduced, but electronic cigarettes containing different amount of nicotine are available. Different levels of nicotine may effect certain behaviors, including withdrawal symptoms, nicotine cravings, and mood and may lead to changes in smoking behavior in current daily and intermittent smokers..
This study assesses the nicotine pharmacokinetic (PK) parameters in adopters of electronic cigarettes following a 12-hour tobacco and nicotine abstinence. The PK results of this study will be compared to historical data on smokers obtained in prior studies, as well as on naïve and short-term users of electronic cigarettes.
The purpose of this study is to learn more about self-control and adults who smoke cigarettes. It has been suggested that people can improve self-control by practicing tasks that require the use of self-control (such as delaying cigarettes or sitting up as straight as possible). The goal of this study is to learn about whether scores on self-control and other measures will change after one week of practicing self-control tasks at home. We believe that adults who smoke cigarettes will show better self-control after practicing tasks for a week.
The purpose of this study is to examine cigarette smokers' use of electronic cigarettes (e-cigarettes), and how use of e-cigarettes affects short term smoking behavior.
The purpose of this study is to determine if in smokers of menthol cigarettes, switching to non-menthol cigarettes prior to a cessation attempt results in greater cessation success than attempting to quit without first switching
The proposed project will utilize perfusion functional magnetic resonance imaging (fMRI), a functional candidate gene association approach (of dopaminergic addictions-targeted polymorphisms), and the dopamine-modulating and gamma-aminobutyric acid (GABA) B receptor agonist, baclofen, to examine the brain and behavioral responses in smokers to appetitive smoking reminders (cues that motivate continued smoking and relapse). These studies will provide a means to identify an appetitive cue-sensitive pharmacologic-responsive endophenotype. Once brain/behavioral/genetic endophenotypes can be determined prior to treatment, smoking cessation treatments can be structured to meet individual needs, which will significantly improve treatment outcome.
Smokers have three choices when faced with surgery: keep smoking, quit for a short time around surgery or quit for good. In the first specific aim, a decision aid was designed to help facilitate the discussion of these choices between smokers and healthcare providers. This second aim will test whether this decision aid improves the decisional quality compared with standard methods used to discuss perioperative smoking.
The hypothesis underlying the proposed study is that the blunted endothelium-dependent vasodilation seen in the airway of current smokers is also present in the brachial artery, and that the same inhaled corticosteroid (ICS) treatment regime that reversed endothelial function in the airway of current smokers will also restore endothelium-dependent relaxation in the brachial artery. Non-smokers will be used as controls and will not receive any intervention or treatment.