View clinical trials related to Substance-Related Disorders.
Filter by:Objective: Cocaine addiction continues to be an important public health problem with over 1.7 million users in the US alone. Cocaine addiction is characterized by compulsive drug use despite adverse consequences and high rates of relapse during periods of abstinence. Cocaine addiction may be mediated by neuroadaptations in reward-related learning and memory processes in the mesocorticolimbic dopamine system and glutamatergic corticolimbic circuitry. Metabotropic glutamate subtype 5 receptors (mGluR5) likely play essential roles in mediating some of the actions of drugs of abuse. Animal studies have shown that mGluR5 knock-out or blockade reduces self-administration of cocaine and cocaine-induced hyper-locomotion. However, to what extent mGluR5 are involved in the pathophysiology of cocaine addiction in humans is currently unknown, partly due to the lack of suitable methods to reliably quantify mGluR5 in the living human brain. This protocol aims to determine whether the density of mGluR5 in brain is altered in participants with cocaine addiction compared to healthy controls using positron emission tomography (PET) and the recently developed radiotracer for mGluR5, [18F]SP203. We also aim to determine whether this density is related to genotype, history of cocaine use, and/or craving for cocaine. Study Population: The study populations will consist of healthy adults with no history of substance abuse and a matched group of healthy current primary cocaine dependent male and female participants (20-50 years old.; N=40/group). Design: Density of mGluR5 will be measured in cocaine dependent participants and healthy adults volunteers with PET and (18F)SP203, a radioligand with specificity for mGluR5. All participants will undergo genotyping to identify normal or variant mGluR5 gene associated with drug abuse. The intensity of craving for cocaine will be assessed while watching a video about cocaine use. Outcome measures: Density of mGluR5 will be compared between cocaine dependent participants and healthy controls. In addition, correlation among the genetic polymorphism, the craving response, and the density of mGluR5 will be determined.
Dextroamphetamine is commonly used to treat ADHD, and recent evidence suggests that this medication may decrease drug use in individuals dependent on cocaine. Thus, the present pilot study will determine the ability of dextroamphetamine to treat individuals with both cocaine dependence and ADHD.
This study examines whether isolated doses of d-cycloserine enhance the efficacy of an exposure-based cognitive-behavioral treatment for chronic and treatment refractory substance dependence.
The study seeks to measure the effect of increased coordination of care on medical costs, treatment utilization and selected clinical indicators among a Medicaid population with chronic medical conditions and substance abuse problems? We shall address this question by conducting a demonstration project consisting of the provision of integrated care management (somatic and behavioral) to Medicaid enrollees living on the Eastern Shore of Maryland and who have both chronic medical conditions and problems with substance abuse. A specific component of the study will be the participation of Maryland's Mental Health Administration (MHA) and MAPS, the administrator of psychiatric services for the Medicaid enrollees in Maryland. We shall compare the results of the integrated care management for the study sample on the Eastern Shore with a control group from the counties of western Maryland.
This study is for the purpose of determining whether cognitive remediation may improve cognition and treatment response in patients entering substance abuse day treatment
Background: - Research has shown that several human genes have been associated with vulnerability to substance abuse and dependence. However, little is known about how people with these genetic tendencies react to drugs in controlled settings. - Methylphenidate, also known as Ritalin, is commonly prescribed for a number of conditions, including attention deficit disorder. Because methylphenidate is widely used in studies of brain chemistry and behavior and has relatively low risks associated with it use, researchers are interested in seeing how it affects the thinking processes of people with apparent genetic vulnerability to drug abuse. Objectives: - To evaluate whether individuals with apparent genetic vulnerability to drug abuse react differently to methylphenidate than people who do not have this vulnerability. Eligibility: - Individuals at least 18 years of age or older who have participated in the NIDA protocol Allelic Linkage in Substance Abuse. Design: - Participants will be asked to avoid using a number of over-the-counter medications, including antihistamines, cough medicines, and nasal decongestants, for 24 hours before the study day. Participants will also be asked to avoid consuming caffeinated beverages, nicotine or tobacco products, or alcohol on the morning of the day of the study, and will provide a urine sample at the start of the study to be tested for chemicals that may interfere with the study. - Because of the nature of the study drug, participants will not be allowed to drive to the clinical center on the day of the study. (Return transportation will be arranged.) - At the start of the study, participants will take two tablets (each 1 hour apart), and will not be told whether the tablets are the study drug or a placebo. - Participants will give regular answers to questions about mood and thinking processes on a computer for approximately 5 hours. Blood samples will be taken during this part of the study.
The purpose of this study is to examine the short - term effects of clozapine on alcohol use in persons with schizophrenia and an alcohol use disorder. The hypothesis is that clozapine will have greater efficacy in reducing alcohol use than other antipsychotic medications.
Gamma hydroxybutyrate (GHB) is a powerful central nervous system depressant. The number of individuals seeking treatment for GHB abuse has been steadily increasing in the United States. Currently, lorazepam and pentobarbital are two medications used to treat individuals who experience GHB-withdrawal symptoms. The purpose of this study is to describe the signs and symptoms of GHB withdrawal and to identify predictors of withdrawal severity. The study will also evaluate the safety and effectiveness of treatment with lorazepam versus pentobarbital for GHB detoxification.