Active clinical trials for "Cocaine-Related Disorders"

The purpose of this study is to assess potential interactions between intravenous (IV) cocaine and 3 doses of GBR 12909.

The purpose of this study is to examine the safety of two consecutive days of metyrapone (MRP) in subjects who may use cocaine concurrently.

The purpose of this study is to investigate the short and long term clinical and cognitive effects of repetitive Transcranial Magnetic Stimulation (rTMS) at 5 Hz and/or 10 Hz frequencies on the left dorsolateral prefrontal cortex in cocaine dependent patients and to examine possible changes in brain structure and functional connectivity associated with this intervention.

In a randomized, double-blind controlled trial the investigators will evaluate the efficacy of rTMS in reducing impulsivity for cocaine addicts through - Quantitative and qualitative analysis - such behavior and possible behavioral consequences related.

Cocaine/Crack Dependence has been associated with neuropsychological impairments mainly in executive functions and decision-making, which are predominantly managed by the prefrontal cortex (PFC) in the brain. However, none study in Neuropsychological Rehabilitation (NR) has been done in order to remediate the executive functioning in this population. The aim of this research is to investigate the impact of neuropsychological intervention based on the stimulation of cognitive functions such as attention, planning, organization, logical reasoning, executive functioning, and decision making. For this research it will be proposed interventions through motivational strategies and board games, especially chess because it has been associated with PFC functioning, since it is a game which requires complex cognitive abilities, such as: inhibitory control, mental flexibility, sustained attention, future planning and decision-making. There will be two groups of patients with cocaine/crack dependence (n = 56), one with NR (group A, n = 28) and another without NR (group B, n = 28). Group B will be submitted to the placebo intervention. Both groups will be submitted to an extensive battery of neuropsychological tests and psychopathological rating scales before and after interventions. A sub-group will also be submitted to functional magnetic resonance imaging and biomarkers measures (BDNF and cortisol). The hypothesis is that group A will present a pronounced improvement not only on the neuropsychological test but also on the PFC functioning in neuropsychological functions compared to group B.

The purpose of this study is to assess potential interactions between intravenous cocaine and ethanol and oral disulfiram.

The purpose of this study is to evaluate clinical safety issues pertaining to flupenthixol, to cocaine, and to their interaction, and to determine how pretreatment with flupenthixol modifies the subjective as well as physiological effects of cocaine. Taken together, these relatively D-1 selective agents can help determine the extent to which DA-1 binding affects the reinforcing effects of stimulants.

We will develop a procedure for conditioning cue-cocaine associations in human drug users. Next, we will reactivate that learning and intervene pharmacologically to prevent the reconsolidation of cue-drug memories. We hypothesize that a combined behavioral and pharmacological approach will have significant potential for persistently inhibiting relapse.

This study is designed to advance our development of a treatment for cocaine dependence. The investigators hypothesize that clients with high-risk characteristics will benefit from enhanced levels of treatment.

Cocaine addiction is a chronic condition with severe cardiac, neurologic, psychiatric and social complications. Cocaine is the second most consumed illicit drug in France. Its prevalence has been multiplied by 3 between 2000 and 2008, and is still on the rise. Craving, the compulsive need to consume, is a key feature of cocaine addiction. It is also predictive of treatment efficacy. However, there is no validated treatment for severe cocaine dependence yet. Response to current psychological and medical treatment is poor, with 73% relapse after 3 months. Patients with severe cocaine addiction are thus in a therapeutic deadlock. To address these unmet medical needs, the investigators designed a pilot study (n=2) to evaluate the safety and the efficacy of the deep brain stimulation of the subthalamic nuclei (STN-DBS) in severe cocaine addiction with at least one cardiac, neurologic or psychiatric complication. Indeed, compulsivity is a critical component of craving, and severe treatment-resistant obsessive compulsive disorder (OCD) are already successfully treated using STN-DBS. Moreover, animal studies recently demonstrated a therapeutic effect of STN-DBS in rats addicted to cocaine. Together, these two lines of research suggest a therapeutic effect of STN-DBS in cocaine addiction mediated by an anti-obsessive mechanism on craving.