Bone formation is impaired in a model of type 1 diabetes

Kathryn M. Thrailkill, Lichu Liu, Elizabeth C. Wahl, Robert C. Bunn, Daniel S. Perrien, Gael E. Cockrell, Robert A. Skinner, William R. Hogue, Adam A. Carver, John L. Fowlkes, James Aronson, Charles K. Lumpkin

Research output: Contribution to journalArticlepeer-review

136 Scopus citations

Abstract

The effects of type 1 diabetes on de novo bone formation during tibial distraction osteogenesis (DO) and on intact trabecular and cortical bone were studied using nonobese diabetic (NOD) mice and comparably aged nondiabetic NOD mice. Diabetic mice received treatment with insulin, vehicle, or no treatment during a 14-day DO procedure. Distracted tibiae were analyzed radiographically, histologically, and by microcomputed tomography (μCT). Contralateral tibiae were analyzed using μCT. Serum levels of insulin, osteocalcin, and cross-linked C-telopeptide of type I collagen were measured. Total new bone in the DO gap was reduced histologically (P ≤ 0.001) and radiographically (P ≤ 0.05) in diabetic mice compared with nondiabetic mice but preserved by insulin treatment. Serum osteocalcin concentrations were also reduced in diabetic mice (P ≤ 0.001) and normalized with insulin treatment. Evaluation of the contralateral tibiae by μCT and mechanical testing demonstrated reductions in trabecular bone volume and thickness, cortical thickness, cortical strength, and an increase in endosteal perimeter in diabetic animals, which were prevented by insulin treatment. These studies demonstrate that bone formation during DO is impaired in a model of type 1 diabetes and preserved by systemic insulin administration.

Original languageEnglish
Pages (from-to)2875-2881
Number of pages7
JournalDiabetes
Volume54
Issue number10
DOIs
StatePublished - Oct 2005

ASJC Scopus subject areas

  • Internal Medicine
  • Endocrinology, Diabetes and Metabolism

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