PMID- 24217934 OWN - NLM STAT- MEDLINE DCOM- 20140226 LR - 20181202 IS - 1479-683X (Electronic) IS - 0804-4643 (Linking) VI - 170 IP - 2 DP - 2014 Feb TI - The skeletal effects of pioglitazone in type 2 diabetes or impaired glucose tolerance: a randomized controlled trial. PG - 255-62 LID - 10.1530/EJE-13-0793 [doi] AB - OBJECTIVE: Preclinical studies, observational studies, and clinical trials suggest that thiazolidinediones (TZDs) reduce bone mineral density (BMD) and increase fracture risk. Most of the evidence on the skeletal effects of TZDs is from studies of rosiglitazone. We set out to investigate the magnitude and etiology of the adverse skeletal effects of pioglitazone. DESIGN: Double-blind, randomized controlled trial. TRIAL REGISTRATION: AUSTRALIA NEW ZEALAND CLINICAL TRIALS REGISTRY, ACTR.ORG.AU IDENTIFIER: ACTRN12607000610437, date of registration 28/11/07. METHODS: A total of 86 people with type 2 diabetes mellitus (T2DM) or impaired glucose tolerance (IGT), median age 64 years, were randomized to receive either pioglitazone 30 mg/day or placebo for 1 year, in addition to their usual diabetes treatments. The primary outcome was change in lumbar spine BMD; secondary outcomes included changes in BMD at other sites and in biochemical markers of bone turnover. RESULTS: Change in spine BMD was not altered by treatment with pioglitazone (Ptreatmentxtime=0.5). After 1 year, the mean (95% CI) between-groups difference in lumbar spine BMD was -0.7% (-2.1, 0.7). Pioglitazone increased bone loss at the proximal femur (Ptreatmentxtime=0.03). After 12 months, the between-groups difference in total hip BMD was -1.2% (-2.1, 0.2). Pioglitazone did not alter change in BMD at other skeletal sites, nor did it affect changes in the levels of either of the biochemical markers of bone turnover, procollagen type 1 N-terminal propeptide, or beta-C-terminal telopeptide of type 1 collagen. CONCLUSIONS: Over 1 year, treatment with pioglitazone 30 mg/day did not produce consistent effects on either BMD or bone turnover in people with T2DM or IGT. The mechanism(s) by which pioglitazone increases fracture risk in T2DM is unclear. FAU - Grey, Andrew AU - Grey A AD - Department of Medicine, University of Auckland, Private Bag 92019, Auckland, New Zealand. FAU - Bolland, Mark AU - Bolland M FAU - Fenwick, Sheryl AU - Fenwick S FAU - Horne, Anne AU - Horne A FAU - Gamble, Greg AU - Gamble G FAU - Drury, Paul L AU - Drury PL FAU - Reid, Ian R AU - Reid IR LA - eng PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20131221 PL - England TA - Eur J Endocrinol JT - European journal of endocrinology JID - 9423848 RN - 0 (Bone Density Conservation Agents) RN - 0 (Thiazolidinediones) RN - X4OV71U42S (Pioglitazone) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Bone Density/*drug effects MH - Bone Density Conservation Agents/adverse effects MH - Bone Remodeling/drug effects MH - Diabetes Mellitus, Type 2/*drug therapy MH - Double-Blind Method MH - Female MH - Fractures, Bone/chemically induced MH - Glucose Intolerance/*drug therapy MH - Humans MH - Lumbar Vertebrae/*drug effects MH - Male MH - Middle Aged MH - Pioglitazone MH - Risk MH - Spine/drug effects MH - Thiazolidinediones/*adverse effects EDAT- 2013/11/13 06:00 MHDA- 2014/02/27 06:00 CRDT- 2013/11/13 06:00 PHST- 2013/11/13 06:00 [entrez] PHST- 2013/11/13 06:00 [pubmed] PHST- 2014/02/27 06:00 [medline] AID - EJE-13-0793 [pii] AID - 10.1530/EJE-13-0793 [doi] PST - epublish SO - Eur J Endocrinol. 2013 Dec 21;170(2):255-62. doi: 10.1530/EJE-13-0793. Print 2014 Feb.