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Related Experiment Video

Updated: Oct 21, 2025

Analysis and Imaging of Osteocytes
10:19

Analysis and Imaging of Osteocytes

Published on: November 29, 2024

944

High-resolution image-based simulation reveals membrane strain concentration on osteocyte processes caused by

Yuka Yokoyama1, Yoshitaka Kameo1,2,3, Hiroshi Kamioka4

  • 1Department of Micro Engineering, Graduate School of Engineering, Kyoto University, 53 Shogoin-Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan.

Biomechanics and Modeling in Mechanobiology
|September 2, 2021
PubMed
Summary
This summary is machine-generated.

Tethering elements amplify mechanical stimuli on osteocyte processes, influencing bone remodeling. Their tension and inclination, shaped by irregular cell structures, concentrate strain on osteocytes, revealing key mechanosensing insights.

Keywords:
CanaliculusComputational biomechanicsImage-based simulationMechanosensingOsteocyteTethering element

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Area of Science:

  • Biomedical Engineering
  • Cell Biology
  • Skeletal Biology

Background:

  • Osteocytes regulate bone remodeling by sensing mechanical stimuli via their cell processes.
  • Tethering elements (TEs) within canaliculi may amplify these mechanical signals.
  • Osteocyte and canaliculus ultrastructure complexity likely impacts mechanosensing.

Purpose of the Study:

  • To investigate the role of osteocyte process and canaliculus ultrastructure in osteocyte mechanosensing.
  • To characterize how structural features influence mechanical stimuli distribution.

Main Methods:

  • Utilized ultra-high voltage electron microscopy (UHVEM) for high-resolution imaging of osteocyte processes and canaliculi.
  • Constructed image-based models of these structures.
  • Performed fluid-structure interaction simulations to analyze flow-induced strain distribution.

Main Results:

  • Identified local strain concentration on osteocyte processes.
  • Found that a few high-tension TEs, inclined due to irregular cell and canaliculus shapes, induced this strain concentration.
  • Demonstrated the significant influence of ultrastructural morphology on mechanical stimuli.

Conclusions:

  • Osteocyte mechanosensing is significantly affected by the ultrastructure of osteocyte processes and canaliculi.
  • Tethering elements play a crucial role in concentrating mechanical strain.
  • This study provides insights into the biomechanics of osteocyte mechanotransduction.