Cocaethylene as a Treatment for Cocaine Dependence - 1
Cocaine has been cited as the primary drug threat in the United States. The purpose of this study is to determine if cocaethylene, used as a prototype drug, is a safe and effective treatment for cocaine dependence.
|Study Design:||Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Crossover Assignment
Primary Purpose: Treatment
|Official Title:||Cocaethylene Substitution Therapy and Tolerance Induction in Treating Cocaine Dependence|
- Clinical physiological response to cocaine challenge - especially adverse effects measures
|Study Start Date:||December 2002|
|Estimated Study Completion Date:||March 2005|
Currently, there are no medications available to specifically treat cocaine addiction. Cocaethylene is an active metabolite of cocaine and has a similar chemical structure to cocaine. The purpose of this study is to determine whether substitution therapy with cocaethylene is a safe and effective treatment for cocaine dependence.
This double-blind, placebo-controlled trial will occur in 3 parts. In Part 1, the individual pharmacokinetics of an intravenous dose of cocaethylene will be determined in order to estimate individualized cocaethylene infusion rates and pharmacokinetic parameters. This will provide important information on how cocaethylene is processed by the body. In Part 2, an infusion of cocaethylene, producing a venous plasma concentration of 200 ng/ml, will be administered over an 8-hour period. Clinical monitoring and blood sampling will occur in order to determine the safety profile of cocaethylene. During Part 3, the ability of cocaethylene to modify the acute effects of intravenous cocaine will be determined. Cocaethylene will be administered in plasma concentrations of 0 ng/ml, 50 ng/ml, or 200 ng/ml over an 8-hour period. Participants will be randomly assigned to receive a challenge intravenous dose of cocaine (0.5 mg/kg or 1 mg/kg) or placebo at the 4-hour mark of cocaethylene infusion. Following the initial 8-hour period, cocaethylene infusion will be continued for an additional 5 hours. Behavioral and physiological measures will be collected throughout the study sessions at predetermined times to evaluate whether tolerance to cocaethylene develops. These measures will also help to determine whether cocaethylene modifies or produces tolerance to the effects of an acute dose of cocaine.
|United States, Virginia|
|Virginia Commonwealth University|
|Richmond, Virginia, United States, 23298|
|Principal Investigator:||Elinore Mccance-Katz, M.D., Ph.D.||Yale Psychiatric Institute|