Effects of Stimulant Dependence on Human Striatal Dopamine System - 15

January 10, 2017 updated by: National Institute on Drug Abuse (NIDA)

Effects of Stimulant Dependence on Human Striatal Dopamine System

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.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

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.

Study Type

Interventional

Phase

  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • California
      • Los Angeles, California, United States, 90025
        • Friends Research Institute

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

21 years to 50 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

M/F, ages 21-50. Meet DSM-IV criteria for methamphetamine and nicotine dependence. Agree to conditions of the study and sign informed consent.

Exclusion Criteria:

Psychiatric disorder that requires medication therapy. History of seizures. Pregnant and/or nursing women. Dependence on ETOH or benzodiazepines or other sedative/hypnotics. Acute hepatitis. Other medical conditions that deem participation to be unsafe.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Masking: None (Open Label)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

National Institute on Drug Abuse (NIDA)

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

March 1, 1999

Study Registration Dates

First Submitted

September 20, 1999

First Submitted That Met QC Criteria

September 20, 1999

First Posted (Estimate)

September 21, 1999

Study Record Updates

Last Update Posted (Estimate)

January 11, 2017

Last Update Submitted That Met QC Criteria

January 10, 2017

Last Verified

March 1, 1999

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • NIDA-3-0010-15
  • Y01-3-0010-15

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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