Interaction Between Reboxetine & 3,4-Methylenedioxymethamphetamine:

Status Completed

Clinical Trial Summary

MDMA releases dopamine, serotonin, and norepinephrine in the brain. Serotonin uptake inhibitors have been shown to interact with 3,4-Methylenedioxymethamphetamine (MDMA) and to decrease its psychoactive and cardiovascular stimulant effects. This finding indicates that MDMA acts in part by releasing serotonin through the serotonin uptake site. However, in vitro studies show that MDMA binds more potently to the norepinephrine uptake site that to the the serotonin or dopamine uptake transporter. In addition, norepinephrine uptake site blockers such antidepressant drugs attenuate some of the behavioral effects of MDMA in animals. These preclinical data indicate that norepinephrine may also contribute to the response to MDMA in humans. To test this hypothesis this study evaluates the interacting effects of the selective norepinephrine transporter inhibitor reboxetine on the subjective and cardiovascular stimulant effects of MDMA in healthy volunteers.

Clinical Trial Description

The study will use a randomized double-blind cross-over design with four experimental sessions. Reboxetine (8 mg) or placebo will be administered the night before the experimental session and 1 h before the administration of MDMA (125 mg) or placebo to 16 healthy volunteers. Subjective and cardiovascular responses and plasma samples for pharmacokinetics will be repeatedly assessed throughout the experiments.

We hypothesize that the highly selective norepinephrine uptake inhibitor reboxetine will attenuate subjective and especially heart rate and blood pressure responses to MDMA. Such a result would indicate that norepinephrine is critically involved in the pharmacology of MDMA and may provide helpful in the use and development of treatments for Ecstasy intoxications. ;

Study Design

Allocation: Randomized, Endpoint Classification: Pharmacodynamics Study, Intervention Model: Crossover Assignment, Masking: Double Blind (Subject, Investigator), Primary Purpose: Basic Science

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT00886886
Study type	Interventional
Source	University Hospital, Basel, Switzerland
Contact
Status	Completed
Phase	Phase 1
Start date	April 2009
Completion date	March 2010

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

Interaction Between Reboxetine and 3,4-Methylenedioxymethamphetamine: Pharmacodynamics (PD) and Pharmacokinetics (PK)

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms