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Prospective, Randomised Study: Metabolic and Functional Effects of Bariatric Surgery Accessed Using PET and MRI. (Sleevepet2)

This study has been completed.
Sponsor:
Information provided by (Responsible Party):
Pirjo Nuutila, Turku University Hospital
ClinicalTrials.gov Identifier:
NCT01373892
First received: June 7, 2011
Last updated: March 5, 2017
Last verified: March 2017
June 7, 2011
March 5, 2017
January 2011
December 2013   (Final data collection date for primary outcome measure)
Tissue metabolism among morbidly obese persons assessed using PET, MRI and fMRI [ Time Frame: Imaging studies will be performed before the bariatric surgery (day 1) and 6 months after. Healthy volunteers will be studied only once. ]
Same as current
Complete list of historical versions of study NCT01373892 on ClinicalTrials.gov Archive Site
Not Provided
Not Provided
Not Provided
Not Provided
 
Prospective, Randomised Study: Metabolic and Functional Effects of Bariatric Surgery Accessed Using PET and MRI.
Prospective, Randomised Study: Metabolic and Functional Effects of Bariatric Surgery Accessed Using PET and MRI
The objectives of this study are to measure effect of obesity on brain structure and molecular pathways, food-stimuli mediated brain activation response, on hormones affecting both feeding and energy balance as well as on bone metabolism and bone marrow fat. In the first phase the studies are performed at baseline before bariatric surgery and in the second phase post-operatively after 6 months. Regional free fatty acid uptake are studied with PET and 14(R, S)-[18F]-fluoro-6-thia-heptadecanoic acid ([18F]FTHA). Changes in body fat distribution are investigated with magnetic resonance imaging (MRI) Brain reward system response to food stimuli is assessed using functional MRI (fMRI) and white and grey matter volumes using diffusion tensor imaging (DTI). Brain neurotransmitter system will be measured with [11C]raclopride and [11C]carfentanil and PET. In the second part of the study the same variables are studied after bariatric surgery: either laparoscopic sleeve gastrectomy or Roux-en-Y gastric bypass.

Regional free fatty acid uptake in myocardium, skeletal muscle, subcutaneous fat, visceral fat, pancreas, liver, brain, intestine and the bone are studied with PET and 14(R, S)-[18F]-fluoro-6-thia-heptadecanoic acid ([18F]FTHA). Changes in body fat distribution are investigated with magnetic resonance imaging (MRI) and magnetic resonance spectroscopy (MRS). Brain reward system response to food stimuli is assessed using functional MRI (fMRI) and white and grey matter volumes using diffusion tensor imaging (DTI).

The study consists totally of 60 study subjects. Of these 40 are morbidly obese adults, BMI

Interventional
Not Provided
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Masking Description:
Sleeve or gastric bypass operation for obese
Primary Purpose: Basic Science
Morbid Obesity
Procedure: Bariatric surgery
  • Active Comparator: Surgery
    Slevve vs. Roux-Y
    Intervention: Procedure: Bariatric surgery
  • No Intervention: Healthy lean volunteers

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Completed
50
January 2016
December 2013   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  • 1) BMI > 40 kg/m2 or
Sexes Eligible for Study: Female
18 Years to 60 Years   (Adult)
Yes
Contact information is only displayed when the study is recruiting subjects
Finland
 
 
NCT01373892
Sleevepet2
No
Not Provided
Plan to Share IPD: No
Pirjo Nuutila, Turku University Hospital
Turku University Hospital
Not Provided
Not Provided
Turku University Hospital
March 2017

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP