Active clinical trials for "Tobacco Use Disorder"

Background: Individuals who have schizophrenia are significantly more likely to smoke than the general population, which leads to increased smoking-related illnesses and high rates of nicotine dependence. Research suggests that high rates of smoking and nicotine addiction in people with schizophrenia are related to the fact that nicotine temporally improves performance in several cognitive tasks, including sensory gating, long-term memory, and visual tracking-all of which are affected by schizophrenia. Smoking among schizophrenia patients may be a form of self-medication, since nicotine may temporarily treat and improve cognitive deficits caused by schizophrenia. Researchers are interested in studying the effects of nicotine on the brain activity of individuals with schizophrenia to better understand how nicotine affects the brain regions connected to memory, visual tracking, and attention. Objectives: To identify specific brain regions involved in the anticipatory learning deficits found in schizophrenia patients who smoke. To determine whether and how nicotine enhances performance in these regions. Eligibility: - Smokers (at least 10 cigarettes per day) between 18 and 50 years of age who either are healthy volunteers or have been diagnosed with schizophrenia/schizoaffective disorder. Design: Participants will be asked to avoid consuming alcohol and restrict consuming caffeinated beverages for 24 hours before the study days. Participants will provide urine and breath samples at the start of the study to be tested for chemicals that may interfere with the study. The study will require two to four visits, with two fMRI sessions and other visits for a clinical interview or training. Participants will have a training session with a possible mock MRI scan to learn how to do tasks that track eye movement and measure ability to pay attention. During the fMRI scanning sessions, participants will receive either a nicotine patch or a placebo patch without nicotine. After the patch is in place, participants will perform tasks while receiving MRI scans. The scans will take up to 2 hours. Participants will provide blood samples after finishing the MRI sessions.

Airway macrophage impairment is a central feature in the immunopathogenesis of chronic obstructive pulmonary disease, regardless of smoking status.

The purpose of this study is to evaluate the effectiveness of a combined parent-student program for smoking prevention in 7th graders in Berlin schools.

RATIONALE: Motivational counseling may help prevent pregnant women from smoking again after pregnancy. PURPOSE: This randomized clinical trial is studying three different types of counseling to see how well they work in preventing smoking relapse after pregnancy in pregnant women who quit smoking during pregnancy.

Nicotine dependence is very common among individuals with schizophrenia and schizoaffective disorder. Cotinine is a chemical that is made by the body from nicotine. Measuring levels of nicotine and cotinine is an accurate way to determine how much cigarette smoke enters a person's body. The purpose of this study is to measure nicotine and cotinine levels in smokers with schizophrenia or schizoaffective disorder to determine if such individuals absorb more nicotine per cigarette than smokers without schizophrenia-related disorders.

Randomized controlled trial of electronic cigarettes with nicotine, without nicotine, nicotine inhaler, and sham-control on endothelial function, oxidative stress and sympathetic nerve activity

This study is to examine if inhaled doses of an e-cigarette flavor, alone and in combination with menthol, changes the appeal of e-cigarettes containing low and high doses of nicotine. The hypothesis is that menthol and the other experimental flavor will interact with nicotine dose to improve taste and liking for e-cigarettes.

The purpose of the study is to evaluate how limiting the nicotine content in regular cigarettes affects choices for regular cigarette and e-cigarette products. Eligible participants will be of legal age to purchase tobacco products and regularly use both e-cigarettes and regular cigarettes.

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

Background: Smoking counselling during hospitalisation with post-discharge follow-up increases quitting. However, provision of cessation care for hospitalised patients is suboptimal. Students are potentially an untapped resource for providing cessation advice, but no studies have investigated this. Aim: To determine if medical students can encourage motivation to stop smoking (MTSS; primary outcome) in hospitalised smokers . Design: 2-arm RCT Setting: RCSI (www.rcsi.ie) and Connolly Hospital (www.hse.ie/eng/services/list/3/hospitals/Connolly/). Participants: Inpatient smokers. Intervention and procedures: 60 graduate medical students will receive standardised motivational interviewing training in the provision of cessation advice. Each student will be randomly assigned to counsel ~1-3 smokers each, including an individual in-hospital, face-to-face session and post-discharge phone counselling. Training and implementation will cover Sept-2015-May-2016. Smokers will be randomised to 'usual care' (n~90), or intervention (n~90, student-delivered motivational interviewing). A researcher will enable recruitment and follow-up, and conduct a qualitative evaluation of programme participants.