A Study of the Relationship Between Disulfiram and Cocaine Self-administration.
Study Details
Study Description
Brief Summary
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.
Condition or Disease | Intervention/Treatment | Phase |
---|---|---|
|
Phase 1/Phase 2 |
Study Design
Arms and Interventions
Arm | Intervention/Treatment |
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Placebo Comparator: 1 Placebo |
Drug: placebo
placebo daily
|
Experimental: 2 disulfiram |
Drug: disulfiram
250mg daily
|
Outcome Measures
Primary Outcome Measures
- Efficacy [2 weeks]
Eligibility Criteria
Criteria
Inclusion Criteria:
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- Meet DSM IV criteria for cocaine dependence; 2. Have a self-reported history of using cocaine by the smoked or IV route. Participants must report at least weekly use for the past month and have a cocaine-positive urine test in the week of study entry;
- Have vital signs after a 48 hours washout period as follows: resting pulse between 50 and 80 bpm, blood pressures between 105-130mm Hg systolic and 45-80mm Hg diastolic;
- Have hematology and chemistry laboratory tests that are within normal (+/- 10%) limits with the following exceptions: a) liver function tests (total bilirubin, ALT, AST, and alkaline phosphatase) < 3 x the upper limit of normal, and b) kidney function tests (creatinine and BUN) < 2 x the upper limit of normal; 5. Have a baseline ECG that demonstrates normal sinus rhythm, normal conduction, and no clinically significant arrhythmias; and 6. Have a medical history and standard physical examination demonstrating no clinically significant contraindications for study participation, in the judgment of the admitting physician and the principal investigator.
Exclusion Criteria:
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- Have any history or evidence suggestive of seizures or brain injury 2. Have any previous medically adverse reaction to cocaine, including loss of consciousness, chest pain, or epileptic seizure; 3. Have neurological or psychiatric disorders, such as:
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psychosis, bipolar illness or major depression as assessed by MINI (or SCID if necessary);
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organic brain disease or dementia assessed by clinical interview;
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history of any psychiatric disorder which would require ongoing treatment or which would make study compliance difficult;
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history of suicide attempts within the past three months assessed by MINI and/or current suicidal ideation/plan as assessed by MINI; 4. Have evidence of clinically significant heart disease or hypertension, as determined by the PI; 5. Have a family history in first degree relatives of early cardiovascular morbidity or mortality, as determined by the PI; 6. Have evidence of untreated or unstable medical illness including: neuroendocrine, autoimmune, renal, hepatic, or active infectious disease; 7. Have HIV and are currently symptomatic, have a diagnosis of AIDS, or are receiving antiretroviral medication; 8. Have any history of asthma, chronic coughing and wheezing, or other respiratory illnesses; 9. Heavy current alcohol intake that is likely to lead to withdrawal symptoms, in the opinion of the PI; 10. Refuse to abstain from alcohol during the protocol and for at least one week after discharge.
- Have any other illness, condition, or use of medications, which in the opinion of the PI and/or the admitting physician would preclude safe and/or successful completion of the study.
Contacts and Locations
Locations
Site | City | State | Country | Postal Code | |
---|---|---|---|---|---|
1 | Baylor College of Medicine | Houston | Texas | United States | 77056 |
Sponsors and Collaborators
- National Institute on Drug Abuse (NIDA)
Investigators
- Study Chair: Thomas Newton, MD, Baylor College of Medicine
Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- 05-08-071-02A