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Cocaine-Related Disorders clinical trials

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NCT ID: NCT03423667 Not yet recruiting - Cocaine Addiction Clinical Trials

Efficacy of N-acetylcysteine on the Craving Symptoms of Abstinent Hospitalized Patients With Cocaine Addiction

Start date: March 1, 2018
Phase: Phase 2
Study type: Interventional

Cocaine abuse is associated with serious physical, psychiatric and social problems. Addiction results in the compulsive use of a substance with loss of control and persistence despite the negative consequences.The act of re-engaging in the search for drugs is called relapse and a particularly insidious aspect of addiction is that vulnerability to relapse lasts for many years after stopping drug use. The main reason why people continue to use cocaine is because of its influence on the reward system.Indeed, this substance makes it possible to increase the level of dopamine, particularly in the nucleus accumbens.This increase in dopamine is not related to the hedonic pleasure that consumption provides. Instead, it imprints a positive value to enhancers and facilitates the learning of reward associations through the modulation of the cortical and subcortical regions of the brain.In other words, it suggests that users become sensitive to a series of stimuli that combine with a rewarding feeling, which drives them to consume when they encounter them. N-acetylcysteine (NAC) has been used for a long time, mainly as mucolytic. It has also been used as a glutathione antioxidant precursor in the treatment of paracetamol overdose for more than 30 years. NAC has shown beneficial effects in animal models of cocaine addiction by reversing neuroplasticity and reducing the risk of restoring consumer behavior in rodents. Human studies show that NAC is potentially effective in preventing relapse in abstinent patients and ineffective in reducing current consumption. In this study the investigators will test a sample of newly detoxified (and therefore abstinent) patients who have taken a 3-4 week course of treatment, in order determine if NAC can be a useful medication candidate to avoid relapse in patients with cocaine dependence.

NCT ID: NCT03266939 Not yet recruiting - Cocaine Dependence Clinical Trials

Rebalancing the Serotonergic System in Cocaine Dependence

Start date: September 2018
Phase: Phase 1
Study type: Interventional

In the United States, 1.5 million people abuse cocaine leading to a host of negative health and economic consequences, yet no FDA approved treatment exists. To develop effective treatments, the following must be considered: 1) do potential medications ameliorate brain disruptions associated with cocaine use? 2) are multiple, targeted treatments necessary? To meet these goals, innovative multi-modal neuroimaging will be used to determine whether rebalancing the serotonergic (5-HT) system reduces cocaine cue reactivity, impulsivity, and normalizes related neurochemistry and brain connectivity.

NCT ID: NCT03090269 Not yet recruiting - Clinical trials for Substance-Related Disorders

Methylphenidate for Cocaine Dependence

ANRS STIMAGO
Start date: June 1, 2018
Phase: Phase 2
Study type: Interventional

This phase II pilot study aims at evaluating the benefits and the risks of methylphenidate (Concerta®) for the treatment of cocaine/crack dependence in terms of cocaine/crack use reduction and adverse events.

NCT ID: NCT03025321 Not yet recruiting - Cocaine Addiction Clinical Trials

Effects of Repetitive tDCS on Relapse in Cocaine Addiction: EMA Study

Start date: January 2017
Phase: N/A
Study type: Interventional

Repetitive bilateral (left cathodal/ right anodal) transcranial Direct Current Stimulation (tDCS) over the dorsolateral prefrontal cortex (DLPFC) seems to reduce craving and relapse risk. However, little is known about the relapse rates in cocaine addiction after tDCS, despite the need for new treatment interventions to reduce the high relapse rates in cocaine addiction. The investigators aim to explore the effects of repetitive tDCS in a larger sample (N=80) of cocaine addicted patients on number of relapse days after three months. In addition, the underlying working mechanism will be explored (e.g. cognitive control functioning). Ecological momentary assessment (EMA) will be used to measure relapse, craving and mood since retrospective self-reports seem to be less reliable in this respect.

NCT ID: NCT01319214 Not yet recruiting - Cocaine Addiction Clinical Trials

Reducing Drug Craving Memories

Start date: March 2011
Phase: N/A
Study type: Interventional

The primary objective is to investigate the potential ability of Inderal (propranolol hydrochloride) to diminish the reconsolidation of motivationally potent drug-related cues in cocaine dependent participants. If effective in this laboratory model, Inderal may have clinical efficacy.