Thiazolidinediones (TZD) Bone Loss and the Effects on Bone Marrow Differentiation and Osteoblast Formation (TZDBONE)
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|ClinicalTrials.gov Identifier: NCT00663143|
Recruitment Status : Completed
First Posted : April 22, 2008
Last Update Posted : April 1, 2015
|Condition or disease||Intervention/treatment|
|Osteoporosis||Procedure: Stromal Cells Sample|
This study aims to determine if TZDs increase the amount of fat and decrease the number of bone producing cells in the bone marrow.
A total of 5 subjects who require surgery for mandible (jaw) fracture and bone graft will be recruited. Some patients who will undergo mandible surgery will require a bone graft. In this procedure, a small piece of bone from the hip is placed in the mandible. In this study, a small amount of bone marrow fluid (5 mL or 1 teaspoon) will be obtained after the bone graft is completed. Obtaining the bone marrow will not result in additional pain or health problems. The effect of TZD on bone marrow and bone forming cells will be studied. The cells obtained during surgery will be grown at Dr Beck's laboratory at Emory University School of Medicine.
A working hypothesis suggests that the increased fracture risk in patients taking TZDs is the result of TZDs altering the differentiation capacity of bone marrow stromal cells pushing them towards the adipocyte lineage at the cost of osteoblast formation thereby decreasing bone formation.
Study AIM:To determine whether TZD exposure in vitro alters bone formation and the differentiation capacity of bone marrow stromal cells by promoting adipocyte lineage differentiation and lowering osteoblast formation.
|Study Type :||Observational|
|Actual Enrollment :||9 participants|
|Official Title:||Thiazolidinedione-Induced Bone Loss: Effects on Bone Marrow Stromal Cell Differentiation Capacity and Osteoblast Formation|
|Study Start Date :||July 2009|
|Primary Completion Date :||March 2010|
|Study Completion Date :||December 2010|
|Stromal Cell Sample||
Procedure: Stromal Cells Sample
Human Bone Marrow Stromal Cells will be obtained from 5 patients. Stromal cells will be obtained from subjects undergoing bone graft procedure to repair traumatic mandible fractures. Bone graft specimens will be obtained from the ileac crest. This will allow easy access to bone marrow specimen without additional pain or complications. A total of 5 ml of bone marrow will be obtained from each patient.
- To determine whether TZD exposure in vitro alters bone formation and the differentiation capacity of bone marrow stromal cells by promoting adipocyte lineage differentiation and lowering osteoblast formation [ Time Frame: once all subjects have been recruited ]
Biospecimen Retention: Samples Without DNA
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): NCT00663143
|United States, Georgia|
|Grady Memorial Hospital|
|Atlanta, Georgia, United States, 30303|
|Emory Crawford Long Hospital|
|Atlanta, Georgia, United States, 30308|
|Emory University Hospital|
|Atlanta, Georgia, United States, 30322|
|Principal Investigator:||Guillermo Umpierrez, MD||Emory University SOM|