- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00801827
PET Imaging and Bariatric Surgery
January 27, 2017 updated by: Julia P.Dunn,MD, Vanderbilt University Medical Center
The purpose of this study is to look at certain areas of the brain that are related to addictive behaviors, such as overeating.
These areas are called 'dopamine type 2 receptors' (DRD2/3) and other studies have shown that obese people have less of these.
We propose that low DRD2/3 availability seen in morbidly obese subjects will change with weight loss associated with bariatric surgery.
Study Overview
Detailed Description
The purpose of this study is to look at certain areas of the brain that are related to addictive behaviors, such as overeating.
These areas are called 'dopamine type 2 receptors' (DRD2/3) and other studies have shown that obese people have less of these.
We propose that low DRD2/3 availability seen in morbidly obese subjects will change with weight loss associated with bariatric surgery.
Study Type
Interventional
Enrollment (Actual)
7
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
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Tennessee
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Nashville, Tennessee, United States, 37232
- Vanderbilt University Medical Center
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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 60 years (Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Ages 18-60 years
- BMI equal to or greater than 40, or equal to or greater than 35 if there are 2 or more co-morbidities
- Weight less than 350 pounds
Exclusion Criteria:
- History of substance abuse,including but not limited to alcohol, cocaine, marijuana, heroin, nicotine
- History of psychiatric disorders
- Use of any antidepressants or psychotropics in the past 12 months
- Diabetes Mellitis
- Positive pregnancy test
- Any condition felt by the PI or co-investigators to interfere with the individual's ability to complete the study
- Subjects on medications for the last 3 months, such as sibutramine, which could affect the quality of the study, as determined by the PI
- Inability to travel to Nashville, TN four times
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: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
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Experimental: F-18 (fallypride)
Subjects undergoing bariatric surgery will have Positron Emission Tomography (PET) scans of their brains using F-18 (fallypride), a dopamine type 2/3 (DA D2/3) receptor radioligand whose binding is sensitive to competition with endogenous dopamine, before and after the operation.
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Subjects undergoing bariatric surgery will have Positron Emission Tomography (PET)scans of their brains using the radioligand fallypride before and after the operation.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Regional DRD2/3 Binding Percent Changes After Bariatric Surgery
Time Frame: ~7 weeks
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~7 weeks
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Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Investigators
- Principal Investigator: Julia P Dunn, MD, Vanderbilt University Medical Center
- Study Director: Robert M Kessler, MD, Vanderbilt University Medical Center
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, 2007
Primary Completion (Actual)
March 1, 2011
Study Completion (Actual)
June 1, 2012
Study Registration Dates
First Submitted
December 2, 2008
First Submitted That Met QC Criteria
December 3, 2008
First Posted (Estimate)
December 4, 2008
Study Record Updates
Last Update Posted (Actual)
March 17, 2017
Last Update Submitted That Met QC Criteria
January 27, 2017
Last Verified
January 1, 2017
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- IRB#061246
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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