Bone response to in vivo mechanical loading in C3H/HeJ mice

E. A. Pedersen, Mohammed P. Akhter, D. M. Cullen, D. B. Kimmel, Robert R. Recker

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Bone, being sensitive to mechanical stimulus, adapts to mechanical loads in response to bending or deformation. Although the signal/receptor mechanism for bone adaptation to deformation is still under investigation, the mechanical signal is related to the amount of bone deformation or strain. Adaptation to changes in physical activity depends on both the magnitude of increase in strain above average daily levels for maintaining current bone density and the Minimum Effective Strain (MES) for initiating adaptive bone formation. Given the variation of peak bone density that exists in any human population, it is likely that variation in levels for MES is, to a considerable degree, inherited and varies among animal species and breeds. This study showed a dose-related periosteal response to loading in C3H/HeJ mice. The extent of active formation surface, the rate of periosteal bone formation, and area of bone formation increased with increasing peak periosteal strain. In these mice, the loaded tibia consistently showed lower endocortical formation surface and mineral apposition rate than the nonloaded bones at every load level. Although periosteal expansion is the most efficient means of increasing moment of inertia in adaptation to bending, a dose response increase in endocortical formation would have been predicted. Our characterization of the mouse bone formation response to increasing bending loads will be useful in the design of experiments to study the tibial adaptive response to known loads in different mouse breeds.

Original languageEnglish
Pages (from-to)41-46
Number of pages6
JournalCalcified Tissue International
Volume65
Issue number1
DOIs
StatePublished - 1999

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Inbred C3H Mouse
Osteogenesis
Bone and Bones
Bone Density
Tibia
Minerals
Population

All Science Journal Classification (ASJC) codes

  • Endocrinology

Cite this

Bone response to in vivo mechanical loading in C3H/HeJ mice. / Pedersen, E. A.; Akhter, Mohammed P.; Cullen, D. M.; Kimmel, D. B.; Recker, Robert R.

In: Calcified Tissue International, Vol. 65, No. 1, 1999, p. 41-46.

Research output: Contribution to journalArticle

Pedersen, E. A. ; Akhter, Mohammed P. ; Cullen, D. M. ; Kimmel, D. B. ; Recker, Robert R. / Bone response to in vivo mechanical loading in C3H/HeJ mice. In: Calcified Tissue International. 1999 ; Vol. 65, No. 1. pp. 41-46.
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