PMID- 22752619 OWN - NLM STAT- MEDLINE DCOM- 20121121 LR - 20211021 IS - 1432-0827 (Electronic) IS - 0171-967X (Print) IS - 0171-967X (Linking) VI - 91 IP - 2 DP - 2012 Aug TI - Rosiglitazone inhibits bone regeneration and causes significant accumulation of fat at sites of new bone formation. PG - 139-48 LID - 10.1007/s00223-012-9623-4 [doi] AB - Thiazolidinediones (TZDs), peroxisome proliferator-activated receptor gamma activators, and insulin sensitizers represent drugs used to treat hyperglycemia in diabetic patients. Type 2 diabetes mellitus (T2DM) is associated with a twofold increase in fracture risk, and TZDs use increases this risk by an additional twofold. In this study, we analyzed the effect of systemic administration of the TZD rosiglitazone on new bone formation in two in vivo models of bone repair, a model of drilled bone defect regeneration (BDR) and distraction osteogenesis (DO) and a model of extended bone formation. Rosiglitazone significantly inhibited new endosteal bone formation in both models. This effect was correlated with a significant accumulation of fat cells, specifically at sites of bone regeneration. The diminished bone regeneration in the DO model in rosiglitazone-treated animals was associated with a significant decrease in cell proliferation measured by the number of cells expressing proliferating cell nuclear antigen and neovascularization measured by both the number of vascular sinusoids and the number of cells producing proangiogenic vascular endothelial growth factor at the DO site. In summary, rosiglitazone decreased new bone formation in both BDR and DO models of bone repair by mechanisms which include both intrinsic changes in mesenchymal stem cell proliferation and differentiation and changes in the local environment supporting angiogenesis and new bone formation. These studies suggest that bone regeneration may be significantly compromised in T2DM patients on TZD therapy. FAU - Liu, Lichu AU - Liu L AD - Arkansas Children's Hospital Research Institute, University of Arkansas for Medical Sciences, Little Rock, AR, USA. FAU - Aronson, James AU - Aronson J FAU - Huang, Shilong AU - Huang S FAU - Lu, Yalin AU - Lu Y FAU - Czernik, Piotr AU - Czernik P FAU - Rahman, Sima AU - Rahman S FAU - Kolli, Vipula AU - Kolli V FAU - Suva, Larry J AU - Suva LJ FAU - Lecka-Czernik, Beata AU - Lecka-Czernik B LA - eng GR - R01 AG028935/AG/NIA NIH HHS/United States GR - AG 028935/AG/NIA NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20120701 PL - United States TA - Calcif Tissue Int JT - Calcified tissue international JID - 7905481 RN - 0 (Hypoglycemic Agents) RN - 0 (Thiazolidinediones) RN - 05V02F2KDG (Rosiglitazone) SB - IM MH - *Adipose Tissue MH - Animals MH - Bone Diseases/*chemically induced/diagnostic imaging MH - Bone Regeneration/*drug effects MH - Choristoma/*chemically induced MH - Down-Regulation/drug effects MH - Drug Evaluation, Preclinical MH - Hypoglycemic Agents/adverse effects/pharmacology MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Osteogenesis/*drug effects/physiology MH - Rosiglitazone MH - Thiazolidinediones/*adverse effects/pharmacology MH - X-Ray Microtomography PMC - PMC3630993 MID - NIHMS443900 COIS- The authors have stated that they have no conflict of interest. EDAT- 2012/07/04 06:00 MHDA- 2012/12/10 06:00 PMCR- 2013/08/01 CRDT- 2012/07/04 06:00 PHST- 2012/05/02 00:00 [received] PHST- 2012/06/11 00:00 [accepted] PHST- 2012/07/04 06:00 [entrez] PHST- 2012/07/04 06:00 [pubmed] PHST- 2012/12/10 06:00 [medline] PHST- 2013/08/01 00:00 [pmc-release] AID - 10.1007/s00223-012-9623-4 [doi] PST - ppublish SO - Calcif Tissue Int. 2012 Aug;91(2):139-48. doi: 10.1007/s00223-012-9623-4. Epub 2012 Jul 1.