Concurrent PET D2/D3 Receptor Imaging and fMRI Smoking Cue Reactivity in Smokers

May 22, 2014 updated by: Marc J. Kaufman, Mclean Hospital

This trial aims to determine whether dopamine D3 receptors are elevated in smokers versus nonsmokers and whether correlations exist between D3 receptor binding potential (BP) and functional MRI (fMRI) reactivity to smoking cues, which has been associated with smoking relapse vulnerability.

Neuroimaging measures of D3 BP and smoking cue fMRI reactivity will be collected concurrently in otherwise healthy nicotine-dependent smokers and age-matched nonsmokers using a 3 Tesla MRI scanner configured to conduct fMRI and Positron Emission Tomography (PET).

We will measure D3 receptor BP using radiolabeled [11C]-(+)-PHNO, which has a relatively higher affinity for D3 versus D2 receptors.

We hypothesize that D3 BP will be elevated in smokers versus nonsmokers and that in smokers, there will be a positive correlation between smoking cue fMRI reactivity and D3 BP.

Study Overview

Status

Withdrawn

Conditions

Intervention / Treatment

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
    • Massachusetts
      • Belmont, Massachusetts, United States, 02478
        • McLean Hospital
      • Boston, Massachusetts, United States, 02114
        • Massachusetts General Hospital
      • Charlestown, Massachusetts, United States, 02129
        • Massachusetts General Hospital, Athinoula A. Martinos Center for Biomedical Imaging

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

18 years to 50 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • competent to provide written informed consent
  • Smokers: self-report of smoking 15 or more cigarettes/day for the past year, self-report of smoking first cigarette of the day within 30 minutes of awakening, meets DSM-IV criteria for Nicotine Dependence, provides expired breath carbon monoxide reading of > 10 ppm at enrollment
  • Nonsmokers: self-report of consuming <100 cigarettes in their lifetime, none in the last 6 months, provides expired breath carbon monoxide reading of < 9 ppm at enrollment
  • Women of childbearing potential: negative STAT serum beta-human chorionic gonadotrophin pregnancy test before scanning

Exclusion Criteria:

  • pregnant or able to become pregnant and not willing to undergo blood pregnancy test
  • unstable medical illness with likely hospitalization for treatment within 6 months
  • life-threatening arrhythmia, cerebro-vascular or cardiovascular event within 6 months of enrollment; liver function tests elevated over 2.5x normal; CNS tumor or seizure disorder
  • users of other tobacco- or nicotine-containing products (gum, patches, e-cigarettes)
  • lifetime history of DSM-IV bulimia, organic mental disorder, brain injury or psychotic disorder
  • 6 month history of non-nicotine substance use disorder or major depression
  • history of multiple adverse drug reactions
  • current use of excluded concomitant medications (smoking cessation medications)
  • known history of allergic reaction to the PET ligand [11C]-PHNO, its components, or any medication

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: Basic Science
  • Allocation: Non-Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Healthy Smokers
Healthy smokers aged 18-50 years reporting average cigarette consumption of 15 or more cigarettes/day for the past year, providing an expired breath carbon monoxide reading exceeding 10 ppm at screening.
Radiation: [11C]-PHNO
[11C]-PHNO will be administered once intravenously to conduct Positron Emission Tomography (PET) measurements of dopamine D2/D3 binding potential.
Other Names:
  • 11C-(+)-4-propyl-3,4,4a,5,6,10b-hexahydro-2H-naphtho[1,2-b][1,4]oxazin-9-ol
Experimental: Healthy Nonsmokers
Healthy nonsmoking controls aged 18-50 reporting consumption of <100 cigarettes in their lifetime, none in the last 6 months, providing an exhaled breath carbon monoxide reading of < 9 ppm at screening.
Radiation: [11C]-PHNO
[11C]-PHNO will be administered once intravenously to conduct Positron Emission Tomography (PET) measurements of dopamine D2/D3 binding potential.
Other Names:
  • 11C-(+)-4-propyl-3,4,4a,5,6,10b-hexahydro-2H-naphtho[1,2-b][1,4]oxazin-9-ol

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Dopamine D3 Receptor Binding Potential Difference Between Smokers and Nonsmokers
Time Frame: March 2014
We will determine whether dopamine D3 receptor binding potential, a dimensionless number which represents the relative concentration of dopamine D3 receptors available for binding, is elevated in smokers versus nonsmoking controls.
March 2014

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Smoking Cue fMRI Reactivity Association with Dopamine D3 Receptor Binding Potential
Time Frame: March 2014
In smokers, we will determine whether an association exists between smoking cue fMRI reactivity intensity (beta weight) and dopamine D3 receptor binding potential, a relationship between receptor (D3) density and dopamine occupancy.
March 2014

Collaborators and Investigators

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

Sponsor

Mclean Hospital

Collaborators

National Institute on Drug Abuse (NIDA)

Investigators

  • Principal Investigator: Marc J. Kaufman, Ph.D., McLean Hospital

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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

January 1, 2014

Primary Completion (Actual)

May 1, 2014

Study Completion (Actual)

May 1, 2014

Study Registration Dates

First Submitted

January 30, 2013

First Submitted That Met QC Criteria

February 1, 2013

First Posted (Estimate)

February 5, 2013

Study Record Updates

Last Update Posted (Estimate)

May 23, 2014

Last Update Submitted That Met QC Criteria

May 22, 2014

Last Verified

May 1, 2014

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • SmokingPETD2-3fMRI
  • R21DA031925-01A1 (U.S. NIH Grant/Contract)

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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