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White Adipose Tissue Clocks and High Calorie Feeding

NCT02809482 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 10

Last updated 2019-07-01

No results posted yet for this study

Summary

Peripheral tissues (e.g. liver, adipose, muscle) express self-sustained circadian clocks that coordinate daily metabolic rhythms. The timing of clock rhythms in peripheral tissues is highly sensitive to feeding-fasting signals across the sleep-wake transition. Nutritional insults such as high fat overfeeding (HF-OF) have been shown to attenuate clock gene expression in peripheral tissues resulting in a deleterious re-programming of the circadian metabolome. Studies in humans have only superficially investigated how the circadian clock machinery is impacted by nutritional signals. The overall goal of this pilot project is to take the first steps toward developing translational methods to investigate links between changes in energy flux and the circadian system in human tissues. Using an innovative ex vivo cell culture approach the investigators will examine the impact of 3-days of HF-OF compared to eucaloric (EU) feeding on the expression of core clock genes in human subcutaneous adipose tissue (SAT). The Investigators hypothesize that compared to EU, the amplitude of clock gene expression in SAT measured over 24hrs will be attenuated following short-term HF-OF. This pilot project will serve as a launch point for designing future studies into the effects of diet and exercise on the circadian control of metabolism in adipose tissue depots as well as other tissues (e.g. muscle).

Conditions

  • Healthy

Interventions

OTHER

Eucaloric feeding

3 days of a diet designed to maintain energy balance

OTHER

Overfeeding

3 days of a diet designed to induce a 40% positive energy balance

Sponsors & Collaborators

  • University of Colorado, Denver

    lead OTHER

Principal Investigators

  • Daniel Bessesen, MD · University of Colorado School of Medicine

Study Design

Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
NONE
Model
CROSSOVER

Eligibility

Min Age
20 Years
Max Age
35 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2016-07-31
Primary Completion
2017-09-30
Completion
2017-09-30

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 NCT02809482 on ClinicalTrials.gov