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Circadian Brown Adipose Tissue Metabolism

NCT02285270 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 10

Last updated 2016-12-07

Study results available
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Summary

Brown adipose tissue is poorly understood fat that can metabolize glucose in order to generate heat. Since activated brown fat has a high metabolic rate, it is of great interest as a potential target to combat obesity. However, the signaling and control of brown fat metabolism is poorly understood. Because brown fat uses glucose as its energy source, brown fat metabolism can be imaged with PET/CT using the positron emitting glucose analog F-18 FDG. We have recently shown in mice a striking circadian variation in brown fat metabolism as evidenced by changes in FDG uptake. In this study we endeavor to generate pilot data on a potential circadian variation in brown fat activation in healthy humans.

Conditions

  • Healthy

Interventions

DEVICE

FDG PET/CT

PET/CT is a hybrid imaging modality that allows imaging positron emitting isotopes such as F-18 along with anatomic imaging using x-rays. The physiologic information from the PET component is co-registered with the anatomic information from the CT component, permitting accurate localization and quantification of physiologic processes. The most common clinically used positron emitting radiopharmaceutical is F-18 fluorodeoxyglucose (FDG). It is a glucose analog which is taken up by glucose transporters and phosphorylated to FDG-6P by hexokinase. FDG PET/CT gives a map of relative amount of glucose uptake and phosphorylation over the interval from injection to scan.

Sponsors & Collaborators

Principal Investigators

  • Daniel Pryma, MD · University of Pennsylvania

Study Design

Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
45 Years
Sex
MALE
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2014-03-31
Primary Completion
2015-04-30
Completion
2015-04-30

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02285270 on ClinicalTrials.gov