Active clinical trials for "Substance-Related Disorders"

Classical conditioning is widely used to study motivational properties of addictive drugs in animals, but has rarely been used in humans. Here, we are establishing a procedure suitable for studying the neurobiology and individual determinants of classical conditioning in humans. Healthy volunteers are randomly assigned to four groups that received methamphetamine or placebo in the presence of distinctive environmental cues under paired or unpaired conditions. During each session, subjects perform tasks known to activate the ventral striatum in fMRI studies. The tasks are performed in the presence of a distinctive context, consisting of a screen background image of a beach or of mountains, accompanied by corresponding sounds. Separate groups of subjects carry out the tasks under high or low reward conditions. Within each of the two reward conditions, one group (paired), receives methamphetamine (20 mg, oral) or placebo consistently associated with one of the contexts, while the other (unpaired) receives drug or placebo unrelated to context. A fifth group (paired) perform the tasks with contextual cues but in the absence of monetary incentives. Before and after conditioning, participants carry out a series of forced choice tasks, and change of preference over time was analyzed.

Background: - The risk for becoming addicted to drugs varies among individual, even those using similar drugs in a similar way. It is not known why some people become addicted and others do not. Studies suggest that some genes may increase the risk of addiction. Negative life experiences may also affect the risk of addiction. Researchers want to test smokers and nonsmokers to study genetic and brain function traits that may lead to drug addiction. Objectives: - To understand brain function in people who may be at a higher risk of drug addiction. Eligibility: Healthy volunteers between 18 and 55 years of age. Smokers (10 to 30 cigarettes per day for more than 2 years) and nonsmokers will be eligible. Design: Participants will be screened with a physical exam and medical history. They will be tested for drug and alcohol use. A blood sample will be collected. The study will involve one visit. Participants will have a magnetic resonance imaging (MRI) scan. At the visit, participants will answer questions about their health and drug use habits. They will then be trained on the tasks they will do during the MRI scan. After the training, they will have the scan and perform the tasks. The scan and tasks will look at brain function related to rewards and impulsiveness. Other computer tests will be given after the scan. These tests will measure learning, memory, and impulsiveness.

The Health Behaviors in School-age Children (HBSC) study is a consortium of investigators from 40 predominantly European and North American countries who conduct a common survey of early adolescent health behaviors every 4 years. The survey gathers information about nutrition, dieting practices, physical activity, injuries, violence, relationships with family and friends, perceptions of school as a supportive environment, alcohol and tobacco use and drug use among adolescents, and about the communities in which students live. The U.S. sponsors of the survey are the National Institutes of Health and the Health Resources and Services Administration. This is the fourth survey done in the United States. The objectives of the international HBSC study are: To assess the prevalence of early adolescent health behaviors To identify psychosocial factors associated with adolescent behaviors To provide an opportunity for analyses of cross-national comparisons To provide an opportunity for analyses of trends in the U.S. and cross-nationally In addition to the above, the survey includes additional questions designed to provide information about areas of specific national interest, including the following: To assess the association of school, family, peers, and other environmental factors on health behavior and health status To assess the prevalence and identify factors associated with obesity, diet and physical activity To assess the prevalence and identify factors associated with bullying and risk behaviors. This is the fourth U.S. administration of the HBSC survey, previously administered in 1997-1998, 2001-2002, and 2005-2006. About 16,000 students in grades 5 thorough 10 at randomly selected public and private schools across the United States complete a 30- 40-minute survey. The questionnaires are anonymous; students are instructed not to put their name on the survey. When they finish the survey, they place it in an envelope and seal it. The envelopes are then put in a box. Reports do not include the names of participating counties, cities, school districts, schools, or students. The information collected from U.S. school children is compared with similar information collected from school children in 40 other countries. The survey is used to help set national priorities for school and youth programs, as well as to monitor the progress of these programs.

This study seeks to elucidate fetal neurobehavioral development in fetuses of opioid dependent women who have either undergone and completed methadone detoxification,or who never received methadone maintenance, and are not methadone maintained at 36 weeks gestation. This research will determine how fetal neurobehavioral functioning in fetuses of opioid dependent, non-methadone maintained women differs from that of fetuses whose opioid dependent mothers are methadone maintained. The project will utilize a state-of-the-art computerized fetal actocardiograph and data analysis program to simultaneously evaluate fetal movement and heart rate, the interaction between the two and maternal physiologic parameters.

This is a study of the registration of tobacco, coffee and substance abuse among acutely admitted psychiatric patients.

The researchers will study 100 families over three years, each with a child (proband) between the ages of 12-17, with the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV) diagnosis of ADHD. The researchers hypothesize smoking will be familial and ADHD probands with a family history of tobacco use will be at increased risk for early initiation and persistence of smoking, compared to ADHD probands with no family history of tobacco use.

The Transitions Clinic Network (TCN)aims to connect former inmates to primary care using trained, culturally competent primary care providers and community health workers (CHWs). The purpose of this project is to support ongoing quality improvement at the 13 participating sites by training culturally competent CHWs and measuring the health, health care utilization, and the costs of caring for former inmates.

This is a 4-phase study to implement the NIDA CDEs in primary care settings. Collecting and utilizing the CDEs in clinical practice requires a strategy for implementing screening to collect substance use information that populates the CDEs, and assisting primary care medical staff to offer appropriate interventions by providing clinical decision support (CDS) and a mechanism for making referrals to addiction treatment. Investigators aim to maximize the efficient adoption of screening, CDS, and treatment referrals by integrating all of these activities into the electronic health record (EHR). The study will be conducted at three sites, representing three large health systems. Each phase will include deliverables essential to move to the next phase, and an independent Advisory Committee will review progress and make recommendations at each transition about how best to progress to each subsequent phase. Based on progress during earlier phases, the Advisory Committee may recommend expansion to additional clinics or health systems during the second part of Phase 4.

In the department for substance use disorders at Uppsala University Hospital there are two wards. One that is locked, where the patients that are emitted can not go out to smoke and another ward where there is a possibility to go out and smoke during the day. The smoking habits on those two floors will be compared and how they feel about smoking will be evaluated when they are admitted to the ward, at discharge, after 1 mont and after 6 months.

Pathological internet use is a blanket term for problematic behavior types (e.g. uncontrolled gaming, cyber pornography, cyber mobbing and excessive use of social media): all perpetrated through the internet. There is little documentation or research on interdependencies/interplay between problematic internet and/or media use and child-adolescent disturbances. Very few clinical examples of syndromes like attention deficiency/hyperactivity (ADHS), anxiety disorder or affective disturbances associated with pathological media/internet use, or gaming, are found in literature.