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Showing 1-20 of 63 trials
NCT02455479
The purpose of this study is to assess the safety and preliminary efficacy of an anti-cocaine vaccine called dAd5GNE in cocaine-dependent individuals. It uses the concept of a vaccine to treat the neurological effects of cocaine by evoking "immunity" to prevent the effects of cocaine on the brain.
NCT05974202
The goal of this clinical trial is to compare the effects of active repetitive transcranial magnetic stimulation (rTMS) to sham (placebo) rTMS prior to cognitive-behavioral therapy (CBT) as a treatment for adults with cocaine use disorder. The main questions it aims to answer are: * Is rTMS safe and feasible as an augmentation for CBT for the treatment of cocaine use disorder? * What is the brain mechanism of rTMS? * Will active rTMS (compared to sham rTMS) followed by CBT help adults with cocaine use disorder achieve abstinence from cocaine? Participants will: * Have two brain MRI scans; * Undergo 3 weeks of daily rTMS (or sham) treatments (15 sessions), and; * Have 12 weeks of once-weekly cognitive-behavioral therapy for the treatment of cocaine use disorder. Researchers will compare active (real) rTMS to sham (placebo) rTMS. All participants will receive cognitive-behavioral therapy. The former principle investigator, Dr. Derek Blevins, has vacated his position (February 2025), and has transferred the principle investigator role to Dr. John Mariani, the STARS Clinic Director.
NCT04907357
The purpose of the study is to determine feasibility of repetitive transcranial magnetic stimulation (rTMS) for individuals with moderate to severe cocaine or methamphetamine use disorder (CUD/MUD). Potential participants will be age 18-65, and interested in cutting down or stopping use. Participants will be randomized to one of two groups; groups will receive rTMS or sham rTMS (placebo) over the course of an 8-week treatment period, and complete follow-up assessments at the end of treatment, 12, and 16 weeks post-randomization.
NCT02111798
This project will examine effects of bupropion extended release (XL) at a dose of 300mg/day for cocaine abstinence among persons receiving methadone for the treatment of opioid use disorder. Participants also earned financial incentives for providing urine samples that tested negative for cocaine. Bupropion was examined for this purpose because of its previously demonstrated efficacy and safety as well as its pharmacological actions at dopamine systems. Participants were randomly assigned to bupropion XL vs. placebo and received different incentive schedules depending on whether they demonstrated abstinence from cocaine early in the study. Outcomes were tracked over a 6-month time frame and the overarching hypothesis was that bupropion (as compared to placebo) would increase the number of urine samples testing negative for cocaine, independent of whether participants demonstrated abstinence from cocaine early in the study.
NCT02927236
Objective: The goal of this clinical trial is to assess the tolerability of an accelerated intermittent theta burst stimulation (iTBS), a form of transcranial magnetic stimulation, intervention in participants with cocaine use disorder and then to determine if the intervention changes brain circuits related to cocaine use disorder and whether these changes relate to clinical outcomes. The main questions it aims to answer are: * Can individuals with cocaine use disorder tolerate accelerated iTBS (3 treatments per day for 10 days) (Pilot study)? * Does iTBS (compared to sham iTBS) alter brain circuits related to cocaine use disorder (Expanded feasibility study)? Researchers will compare individuals with cocaine use disorder to those without cocaine use disorder to identify differences at baseline, compare effects of the first day of iTBS treatment, and see if changes after treatment align brain circuits in those with cocaine use disorder more closely to patterns seen in those without cocaine use disorder. Participants will: * Undergo 10 days of iTBS treatment and two follow-up visits (1 week and 4 weeks after treatment) and complete questionnaires throughout to assess tolerability and drug use (Pilot study). * Participants with cocaine use disorder will complete a characterization phase with questionnaires, two fMRI scans and a trial session of iTBS (sham or active) before the treatment phase (Expanded feasibility study).
NCT06125054
The goal of this clinical trial is to learn about the effects of the combination of ketamine and realtime functional magnetic resonance imaging (fMRI) neurofeedback training in individuals with cocaine use disorder. The main questions the investigators aim to answer are: * Can the investigators observe a positive, significant effect on percentage of cocaine use days of both interventions combined as well as stand alone interventions? * Is there a significant transfer effect of the neurofeedback training? * Is there a significant, ketamine-dependent change in glutamate levels in the nucleus accumbens? Participants will be given ketamine and a realtime fMRI neurofeedback training. Both interventions are placebo-controlled. The investigators will compare the four intervention groups to investigate the effects of the stand-alone effects of the intervention and the combination of it.
NCT03471182
The proposed research program will investigate the changes in brain chemistry and circuitry that 're-wire' the brain during chronic cocaine use, promote relapse, and complicate treatment efforts. Currently-using and non-treatment-seeking individuals with a cocaine use disorder will undergo a cocaine self-administration paradigm 2-5 days prior to completing positron emission tomography (PET) and functional magnetic resonance imaging (fMRI).
NCT06189690
This study aims to explore the effect of 5-Hz rTMS over the left dorsolateral prefrontal cortex on the BDNF, craving and cognitive function. This study will be longitudinal, with a short-term double-blind placebo-controlled phase consisting of 20 rTMS sessions and a long-term phase, consisting of 2 weekly sessions for 12 weeks. Participants will be clinically assessed pre-treatment (T0), after 20-sessions phase (T1) and after 12-weeks phase (T2) by an interview about psychiatric symptoms. Also, blood will be obtained in the same T0, T1 and T2 to peripheral levels of BDNF determination. Cognitive state will be measured at the same time-points (T0, T1, T2) by paper-pencil and computerized neuropsychological assessment. Researchers will compare active rTMS versus placebo 5 Hz-rTMS on described variables. Additionally, a comparative group (without rTMS intervention) will be included to equivalently measure described variables during periods without cocaine consumption.
NCT02124941
This study is designed to look at the relationship between brain glucose utilization, neurotransmission (e.g., glutamate, also known as the main excitatory amino-acid neurotransmitter in the brain), and synaptic density. This relationship will be explored in the brain's prefrontal cortex, an area important in decision-making and impulsivity.
NCT02416050
Can brain MRI at entry of cocaine inpatient cessation attempt predict relapse during a three month follow-up ? Hypothesis : White matter losses in the prefrontal cortex are associated with relapse to cocaine use.
NCT02302976
The investigators plan to explore the effects of acute pre-treatment with the glucagon like peptide-1 (GLP-1) agonist, exenatide versus placebo, on the subjective (e.g., euphoric) and behavioral effects (e.g., self-administration) of cocaine in experienced, non-treatment seeking users of the drug. Additionally, the investigators plan to explore the effects of sub-chronic (5-day) treatment with exenatide as compared to placebo on the subjective (e.g., euphoric) and behavioral (self-administration) effects of cocaine in experienced, non-treatment seeking users of the drug.
NCT02538744
The investigators will assess the impact of treatment with doxazosin and modafinil, alone and in combination, on the subjective and reinforcing effects of cocaine in non-treatment-seeking, cocaine-dependent volunteers. The investigators will use a hybrid design in which participants will be randomized into two groups: placebo and doxazosin 8 mg/d. They will remain in their assigned group for the duration of the study. After titrating doxazosin to the target dose, study procedures will be completed three times, once during treatment with each dose of modafinil (0, 200, and 300 mg/d), in pseudo-random order such that 200 mg precedes 300 mg).
NCT00838981
The purpose of this study is to compare the efficacy of the combined treatment modafinil + Contingency Management (CM) to either treatment condition alone or to yoked-controls on cocaine abstinence. To investigate the role of modafinil-related improvements in memory, impulse control, and attention in mediating cocaine abstinence.
NCT03921151
This project will evaluate the role of the 5-HT2CR:5-HT2AR balance in impulsive action and cue reactivity in cocaine-dependent subjects as compared to non-drug using controls.
NCT01251393
Considering the effects of the cholinergic system on the drug reward and self-administration mechanisms, acetylcholine (Ach) may play an important role on cocaine dependence process. Then the present study aims to evaluate biperiden efficacy (a cholinergic antagonist) in attenuate compulsion, one o the main symptoms of the drug dependence.
NCT02994875
The objective of this research is to identify the functional neural mechanisms (as assessed using fMRI) of short-term N-acetylcysteine (NAC) administration among methadone-maintained individuals with cocaine dependence.
NCT01151813
This is a Phase II within-subjects double-blind placebo-controlled human laboratory study. The purpose of the study is to determine the efficacy of varenicline (Chantix) for reducing cue-induced cocaine and alcohol craving.
NCT00385268
Trial to determine the safety, efficacy and tolerability of acamprosate for the treatment of cocaine dependence.
NCT00566969
A total of 120 male and female opioid dependent cocaine users will participate in this study. This study will be a 8-week double-blind, placebo controlled study examining the dose-dependent effects of carvedilol (up to 50 mg/day) in methadone stabilized patients. The design will have two phases: 1) a four-week "treatment " phase; and 2) a 4 week " taper and detoxification or transfer" phase. Subjects will be cocaine users who are on stable doses of methadone (60 to 140 mg/day). Carvedilol dose will be increased from 12.5mg/day to the target dose of either 25 or 50 mg/day as tolerated. At the end of the treatment-phase, subjects will undergo detoxification from methadone over a 2 to 4-week period based on an individual's needs, and they will concurrently be tapered off carvedilol.
NCT00914381
To compare the efficacy of Community Reinforcement Approach (CRA) and 12-Step Facilitation (TSF) counseling and of voucher based reward therapy (VBRT) and a yoked, non-contingent voucher control (VC) for the treatment of cocaine dependent pregnant women or women with young children.