Active clinical trials for "Tobacco Use Disorder"

Background: - A brain circuit called the default network is the brain circuit that is active when the brain is at rest; that is, when individuals are not concentrating on specific tasks. Previous research has shown that the default network functions differently in people with schizophrenia and Alzheimer s disease, and may contribute to the problems with memory and concentration that can affect people who have these conditions. Studies have also shown that nicotine affects the default network, but more research is needed on the ways in which nicotinic receptors may change activity in these regions and thereby affect individuals ability to concentrate on specific tasks. Objectives: - To determine whether and how nicotine and mecamylamine, a drug that blocks nicotinic receptors, affect the default network in nonsmokers in ways that improve thinking and concentration. Eligibility: Healthy, right-handed volunteers between 21 and 50 years of age. Volunteers must not have used any kind of tobacco product in the past 2 years. Design: This study involves an initial screening visit, a training visit, and three testing visits. Participants will be screened with a medical history and physical examination, as well as blood and urine samples and questions about smoking history. Participants will have an initial training session to practice the tasks that will be done during magnetic resonance imaging scans at the testing visits. These tasks will test participants concentration and memory. Participants will have three test sessions with the following combinations of study drugs: (1) a nicotine patch and a placebo capsule, (2) a placebo patch and a capsule of mecamylamine, or (3) a placebo patch and capsule. Different combinations will be given at each visit, and participants will not know which one they receive. Participants will perform the same concentration and memory tasks at each testing visit, and will provide a blood sample after each visit to determine levels of nicotine and mecamylamine.

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.

The primary purpose of this investigation is to determine the predictive value of task persistence as measured by a mirror tracing task. A secondary purpose is to evaluate differences in task persistence in smokers with or without schizophrenia. It is hypothesized that task persistence in smokers in both diagnostic categories (schizophrenia and no schizophrenia) will predict tobacco dependence treatment outcome at one and six months. It is also hypothesized that smokers with schizophrenia will show lower levels of task persistence after controlling for other motor skills than smokers without schizophrenia.

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.

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.

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

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.

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.

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