Active clinical trials for "Cocaine-Related Disorders"

Cocaine dependence is a significant public health concern. The proposed research will provide important clinical information regarding the efficacy of agonists replacement therapies for managing cocaine dependence.

The problem of cocaine dependence remains a major medical, social, and legal concern. Several studies have suggested that disulfiram may be beneficial for the treatment of cocaine dependence. A common assumption has been that disulfiram treatment, by increasing DA availability, enhances the aversive aspects of stimulants. This study aims to measure plasma activity in those with the C/C DBH genotype, which is associated with higher DBH activity subsequently making the disulfiram treatment more effective, as well as determine the effects of treatment with disulfiram on cocaine self-administration using a human laboratory model of cocaine self-administration.

The dopamine system is critical in modulation of reward and has been implicated in the initiation and maintenance of addiction (Volkow et al 2004). Medications that increase dopamine either directly or indirectly have been shown to have preliminary efficacy at reducing cocaine use in cocaine dependent subjects (Grabowski et al 2004a; Schmitz et al 2008). A novel class of medications that has recently been shown to indirectly modulate dopamine function is adenosine A2A receptor antagonists (Fuxe et al 2007). Based on their effect on dopamine function it has been suggested that these compounds may be efficacious in the treatment of drug addiction (Ferre et al 2007c). Before clinical efficacy studies are undertaken, more basic research on the effects of adenosine A2A antagonists on brain function and behavior are warranted. The aim of this study is to examine the acute effects of a single dose of the selective adenosine A2A antagonist (SYN115, Synosia Therapeutics, Chemical name: 4-Hydroxy-4-methyl-piperidine-1-carboxylic acid-(4-methoxy-7-morpholin-4-yl-benzothiazol-2-yl)-amide) on brain function and behavior in cocaine dependent individuals using functional magnetic resonance imaging (fMRI). To examine the effect of a single dose of SYN115 on brain function and behavior in cocaine dependent subjects. Hypotheses: SYN115 100 mg will increase brain activation in the dorsolateral prefrontal cortex compared to placebo in cocaine dependent subjects performing a working memory task. SYN115 100 mg will increase brain activation in the ventral striatum compared to placebo in cocaine dependent subjects performing a reversal learning task. SYN115 100 mg will reduce brain activation in the anterior cingulate gyrus and amygdala compared to placebo in cocaine dependent subjects performing a cocaine-word Stroop task.

Subjects participating in this protocol will participate in three phases: 1) pre-admission, 2) inpatient admission, and 3) follow-up. Pre-admission involves screening (detailed in inclusion/exclusion criteria section) and one week of outpatient sleep and activity monitoring. Inpatient admission is 16 consecutive nights on the Clinical Neuroscience Research Unit and involves subjective and objective tests of sleep, sleepiness, attention, and learning. During inpatient admission subjects will take modafinil or placebo. For follow-up, subjects will return to the CNRU for one night and again participate in objective tests of sleep, sleepiness, attention, and learning. We hypothesize that modafinil will decrease subject and objective measures of sleepiness and will promote attention and learning in cocaine dependent persons.

Stressful situations and cues associated with cocaine can lead to craving in cocaine dependent individuals. The purpose of this study is to determine whether guanfacine or modafinil are effective in reducing stress and cue induced craving in cocaine dependent individuals.

Cocaine addiction is a serious health problem with no available medical treatment for preventing relapse. Topiramate, a medication which lowers dopamine levels, may have the ability to diminish cocaine cravings in addicts. The purpose of this study is to determine the effectiveness of topiramate in reducing cocaine's rewarding effects in individuals addicted to cocaine.

The purpose of this study is to assess the safety and tolerability of ALKS33-BUP when administered to opioid-experienced cocaine abusers.

Stress is likely involved in relapse to cocaine use. This project will investigate the role oxytocin may play in the stress response in cocaine-dependent men and women and examine how oxytocin may impact brain activity in individuals exposed to cocaine-related cues.

The purpose of this study is to improve the efficacy of modafinil as a potential treatment for cocaine dependence.

This study is being done to find out if medicines that affect a neurotransmitter (chemical messenger) in the brain called adenosine improve behavioral problems that are related to drug abuse. Another purpose of the study is to find out how genes related to adenosine change how people respond to these medicines. More information about how these medicines change behaviors may be helpful to come up with new treatments for drug abuse.