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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/24596

Title: Cellular and Molecular Mechanism Underlying the Effect of Low-magnitude, High-frequency Vibration on Bone
Authors: Lau, Esther Yee Tak
Advisor: You, Lidan
Department: Biomedical Engineering
Keywords: bone
mesenchymal stromal cell
whole body vibration
low-magnitude, high-frequency vibration
Issue Date: 27-Jul-2010
Abstract: An emerging non-pharmacological treatment for bone degenerative diseases is whole body vibration (WBV), a mechanical signal composed of low-magnitude, high-frequency (LMHF) vibrations that when applied to bone, have osteogenic and anti-resorptive effects. Currently, the cellular and molecular mechanism underlying the effect of WBV on bone is unclear. In this study, we investigated the response of osteocytes, the putative mechanosensor in bone, under LMHF vibration. As bone cells differentiate from mesenchymal stromal cells (MSCs), we also studied the osteogenic differentiation of rat MSCs in the presence of vibration loading. We found that vibrated osteocytes show gene and protein expression changes suggestive of an anti-osteoclastogenic response, and secrete soluble factors that inhibit osteoclast formation and activity. In contrast, rat MSCs showed moderate to no response to LMHF vibration during osteogenic differentiation. Our data suggest that in vivo effects of LMHF vibration are mediated through mechanosensing and biochemical responses by osteocytes.
URI: http://hdl.handle.net/1807/24596
Appears in Collections:Master
Institute of Biomaterials and Biomedical Engineering - Master theses

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