Expired Study
This study is not currently recruiting Study Participants on ClinicalConnection.com. If you would like to find active studies please search for clinical trials.

Boston, Massachusetts 02111


Purpose:

Vitamin D is a fat soluble vitamin that has important effects on calcium (including absorption of calcium from the diet) and bone metabolism. Vitamin D is known to be stored in fat tissue, and it is also present in the circulation. The purpose of this study is to investigate the relationship between levels of vitamin D in fat tissue and in blood.


Study summary:

Although vitamin D is known to be stored in fat tissue, researchers are not sure about the role that fat tissue plays in vitamin D metabolism. This study will help develop the methodology necessary to further investigate the role of fat tissue in vitamin D metabolism and will assess the relationship between levels of vitamin D in fat tissue and in blood. 50 subjects who are referred for gastric bypass surgery will be enrolled in this study. Subjects will complete questionnaires about their medical history, travel history and food intake. Prior to or during surgery, subjects will be asked to provide a blood sample for selected chemistries related to vitamin D metabolism. During gastric bypass surgery, the surgeon will collect small pieces of fat tissue from the fat under the skin and within the abdomen by surgical biopsy. These samples will be used to refine the methodology for determining the levels of vitamin D in blood and fat tissue and for comparing levels of vitamin D in various tissues.


Criteria:

Inclusion Criteria: - Obese patients referred for gastric bypass surgery Exclusion Criteria: - Patients must not be taking bile acid-sequestering medications or anti-seizure medications


NCT ID:

NCT00033826


Primary Contact:

Principal Investigator
Miriam Blum, MD
Jean Mayer USDA Human Nutrition Center on Aging at Tufts University


Backup Contact:

N/A


Location Contact:

Boston, Massachusetts 02111
United States



There is no listed contact information for this specific location.

Site Status: N/A


Data Source: ClinicalTrials.gov

Date Processed: December 12, 2017

Modifications to this listing: Only selected fields are shown, please use the link below to view all information about this clinical trial.


Click to view Full Listing

This study is not currently recruiting Study Participants on ClinicalConnection.com. The form below is not enabled.