Phase 2
N=57
The Effect of Glitazone Treatment on Bone Marrow and Bone Marrow Cells
Change in Bone Mineral Density · Change in Bone Marrow Fat Content
Bottom Line
View on ClinicalTrials.gov: NCT00609362 ↗Enrolled (actual)
57
Serious AEs
0.0%
Results posted
Apr 2011
Primary outcome: Primary: Difference in Percent Change in Bone Mineral Density (BMD) From Baseline to 14 Weeks Between the Rosiglitazone Group and the Placebo Group — -1.3; 0.3 Percent change from baseline — p=0.055
Study Design & Population
- Study type
- Interventional
- Phase
- Phase 2
- Interventions
- Rosiglitazone (Drug); Placebo pill (Drug)
- Age
- Adult, Older Adult · 60+ yrs
- Sex
- Female
- Sponsor
- University of Aarhus
- Primary completion
- Nov 2009
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Difference in Percent Change in Bone Mineral Density (BMD) From Baseline to 14 Weeks Between the Rosiglitazone Group and the Placebo Group |
-1.3; 0.3 | 0.055 |
| SECONDARY Difference in Percent Change in Bone Marrow Fat (Given by a Lipid to Water Ratio) in the Spine. |
-13.5; 6.8 | 0.056 |
| SECONDARY Difference in Percent Change in Level of C-terminal Telopeptide (CTx) Between the Rosiglitazone and Placebo Groups |
20.4; -7.1 | 0.003 sig |
| SECONDARY Change in Gene Expression in Bone Marrow and Fat Cells |
— | — |
Summary
Osteoporosis is a generalised bone disease leading to an increased risk of fractures. The disease is caused partly by environmental and partly by genetic factors. It is well known that the fat content of the bone marrow is increased in osteoporotic patients. Animal studies suggest that stimulation of bone marrow stem cells through the molecule PPARgamma with the drug rosiglitazone converts the stem cells to fat cells instead of bone cells thereby decreasing bone strength. In a single study healthy volunteers were treated with rosiglitazone for 14 weeks and had a decrease in bone mineral density.
In the present study we wish to investigate the effect of this treatment on bone and fat tissue. 25 women above the age of 60 will be treated with rosiglitazone 8 mg/day for 14 weeks and compared with 25 women receiving placebo.
The effect will be evaluated as follows:
1. The effect on bone marrow density will be examined by a bone scan prior to and after treatment and again after 6 and 9 months.
2. The effect on bone turnover will be measured in blood- and urine samples at the same times.
3. The effect on fat distribution will be evaluated by an MRI scan after treatment.
4. The effect on bone marrow cells will be investigated bone marrow sampling immediately after treatment
5. The direct effect on fat will be examined by a biopsy immediately after treatment The study hypothesis is that rosiglitazone treatment decreases bone mineral density and increases bone marrow fat content. The causal molecular mechanisms will be investigated from the bone marrow and fat samples
Eligibility Criteria
Inclusion Criteria
- Postmenopausal women age 60-75 with no rosiglitazone allergy
Exclusion Criteria
- Osteoporosis
- Diabetes
- Hyperthyroidism, untreated hypothyroidism, hyperparathyroidism
- Treatment with bone active drugs
- Low impact fracture
- Heart disease
- Kidney failure
- Liver failure
- Anaemia
- Ineligibility for MRI-scan
- Cancer within last 5 years
Data sourced from ClinicalTrials.gov (NCT00609362). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.