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The Incidence and Factors of Brown Adipose Tissue in Chinese

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ClinicalTrials.gov Identifier: NCT01381042
Recruitment Status : Unknown
Verified December 2009 by Huashan Hospital.
Recruitment status was:  Active, not recruiting
First Posted : June 27, 2011
Last Update Posted : June 27, 2011
Sponsor:
Information provided by:

Study Description
Brief Summary:
Previous studies have shown active brown adipose tissue (BAT) is present in adults and may play important roles in regulating energy homeostasis. However, the majorities of these studies were done in patients undergoing scanning for cancer surveillance, and may not reflect BAT behavior in healthy individuals. In addition, little is known about the ethnic variation in BAT activity, particularly in Chinese adults. Due to the large amount in our cohort, we are able to look at the difference between subjects for cancer surveillance (CS) and subjects for medical check-up (MC), and to clarify the impact of clinical and lifestyle parameters.

Condition or disease
Obesity

Detailed Description:
We will study scanning database including data from July 2006 to June 2010 in Shanghai. BAT activity will be measured via 18F-fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT). Age, imaging date, sex, and outdoor temperature will be collected for all patients. To evaluate the effects of multiple metabolic parameters on BAT activity, we will collect height, body weight, fasting plasma glucose (FPG), medical history, diagnosis, smoking, alcohol consumption, exercise, liver triglyceride content, and thyroid metabolic activity for all patients with detectable BAT and their negative controls, consisting of two patients who underwent PET/CT scans at the same day but without detectable BAT.

Study Design

Study Type : Observational
Estimated Enrollment : 600 participants
Time Perspective: Retrospective
Official Title: Retrospective Study on the Incidence and Factors of Brown Adipose Tissue in Adult Chinese
Study Start Date : February 2010
Estimated Primary Completion Date : December 2011
Estimated Study Completion Date : December 2011
Groups and Cohorts


Outcome Measures

Eligibility Criteria

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Subjects who underwent scanning for either cancer surveillance (CS) or medical check-up (MC) from July 2006 to June 2010 in Huashan Hospital.
Criteria

Inclusion Criteria:

  • Subjects with detectable brown adipose tissue
  • Negative controls, consisting of two subjects who underwent PET/CT scans at the same day but without detectable BAT

Exclusion Criteria:

  • Younger than 18 years
Contacts and Locations

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01381042


Locations
China
Huashan Hospital
Shanghai, China, 200040
Sponsors and Collaborators
Huashan Hospital
Investigators
Study Chair: Yiming Li, Dr. Huashan Hospital
More Information

Responsible Party: Yiming Li, Division of Endocrinology and Metabolism
ClinicalTrials.gov Identifier: NCT01381042     History of Changes
Other Study ID Numbers: KY2009-307
First Posted: June 27, 2011    Key Record Dates
Last Update Posted: June 27, 2011
Last Verified: December 2009

Keywords provided by Huashan Hospital:
Brown Adipose Tissue
Incidence
Factor
Human