NCT00000350

Effects of Stimulant Dependence on Human Striatal Dopamine System - 15

Effects of Stimulant Dependence on Human Striatal Dopamine System

• Status: Unknown
• Phase: Phase 1
• Study type: Interventional
• Enrollment: 0 (planned)
• Sponsor: National Institute on Drug Abuse (NIDA) · NIH
• Sex: All
• Age: 21 Years – 50 Years
• Healthy volunteers: Not accepted

Summary

The purpose of this study is to determine whether DAT availability, assessed by WIN binding, in the striatum is altered in cocaine or methamphetamine dependence. To determine whether DA synthesis capacity, assessed by FDOPA uptake, in the striatum is altered in Coc or Meth dependence. To determine whether the PET tracers, WIN or FDOPA, will differentiate Meth induced alterations from those induced by Coc use. To determine whether the PET characterization of striatal alterations observed at 3-5 days since last drug use persists at least 3 months after last drug use.

Detailed description

4-5 Day inpatient study. Participant will have scanned pictures (MRI \& PET scans) taken of their brain after being injected with a small amount of WIN, a radioactive substance. Participants give daily urine samples and fill out health related questionnaires. It is important to determine whether the alterations characterized within one week of last drug use persist over a longer time period. Based on results of the studies from aims 1 \& 2, we will decide which of the 2 probes, WIN or FDOPA-PET is the more sensitive index of stimulant-dependency-induced changes.

Conditions

• Amphetamine-Related Disorders
• Tobacco Use Disorder

Interventions

Type	Name	Description
PROCEDURE	radioactive substance

Timeline

• Start date: 1999-03-01
• First posted: 1999-09-21
• Last updated: 2017-01-11

Locations

1 site across 1 country: United States