Cold Stress Stimulate the Browing of Subcutaneous White Adipose in Healthy Adults

August 11, 2015 updated by: Xiang Guang-da
Adipose tissues, which include white adipose tissue (WAT) and brown adipose tissue (BAT), play an essential role in regulating whole-body energy homeostasis. Recent studies also reveal the presence of a subset of cells in WAT that could be induced by environmental or hormonal factors to become ''brown-like'' cells, and this ''beigeing'' process has been suggested to have strong antiobesity and antidiabetic benefits. More recently, same studies showed that cold stress stimulate the browning of subcutaneous white adipose. However, to the investigators knowledge, there are no direct data that clearly show that cold stress can promote the browning of subcutaneous white adipose.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Individuals have cold exposure at 15C for 2 hr everyday for one week.Biopsy for subcutaneous white adipose was performed before and after one week cold exposure programme under local anesthesia. Measure the brown fat characteristics of biopsy samples. The expression levels of uncoupling protein-1 (UCP-1), peroxisome proliferator-activated receptor (PPAR)-r, peroxisome proliferator-activated receptor r coactivator 1 a (PGC1a) , growth factor receptor binding protein-10 (Grb10), PR domain containing 16 (PRDM16) will be determined before and after cold stress programme from the biopsy samples. In addition, a combination of PET and computed tomography (CT) - with the glucose analogue 18F-fluorodeoxyglucose (18F-FDG) as a tracer will be performed for brown adipose tissue before and after cold stress programme.

Study Type

Interventional

Enrollment (Actual)

10

Phase

  • Not Applicable

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

  • China
    • Hubei
      • Wuhan, Hubei, China, 430070
        • Wuhan General Hospital

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

20 years to 60 years (ADULT)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

Male

Description

Inclusion Criteria:

  • healthy men
  • 18-60 years old
  • BMI 20-28 kg/m2

Exclusion Criteria:

  • BMI < 20 kg/m2
  • BMI > 28 KG/M2
  • Female

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

  • Allocation: NA
  • Interventional Model: SINGLE_GROUP
  • Masking: NONE

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
EXPERIMENTAL: healthy adults
Other: cold stress

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
browning of subcutaneous white adipose
Time Frame: 4 months
Brown fat characteristics of biopsy samples will be assessed by determining the expression levels of UCP1, PGC1a, PRDM16 and Grb10.
4 months

Collaborators and Investigators

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

Sponsor

Xiang Guang-da

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

June 1, 2014

Primary Completion (ACTUAL)

September 1, 2014

Study Completion (ACTUAL)

September 1, 2014

Study Registration Dates

First Submitted

May 31, 2014

First Submitted That Met QC Criteria

June 5, 2014

First Posted (ESTIMATE)

June 9, 2014

Study Record Updates

Last Update Posted (ESTIMATE)

August 13, 2015

Last Update Submitted That Met QC Criteria

August 11, 2015

Last Verified

August 1, 2015

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • 2014Wze088

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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