Cold Stress Stimulate the Browing of Subcutaneous White Adipose in Healthy Adults
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 Design:||Intervention Model: Single Group Assignment
Masking: Open Label
|Official Title:||Cold Stress Stimulate the Browing of Subcutaneous White Adipose in Healthy Adults|
- browning of subcutaneous white adipose [ Time Frame: 4 months ] [ Designated as safety issue: No ]Brown fat characteristics of biopsy samples will be assessed by determining the expression levels of UCP1, PGC1a, PRDM16 and Grb10.
|Study Start Date:||June 2014|
|Estimated Study Completion Date:||September 2014|
|Estimated Primary Completion Date:||September 2014 (Final data collection date for primary outcome measure)|
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.
Please refer to this study by its ClinicalTrials.gov identifier: NCT02159144
|Contact: Xiang Guangda, MD, phD||+8602768878411||Guangda64@hotmail.com|
|Wuhan General Hospital||Recruiting|
|Wuhan, Hubei, China, 430070|
|Contact: Xiang Lin, MD 02768879059 email@example.com|