Mechanically induced intracellular calcium waves in osteoblasts demonstrate calcium fingerprints in bone cell mechanotransduction
Document Type
Article
Publication Date
11-2007
Department
Department of Mechanical Engineering-Engineering Mechanics; Department of Biomedical Engineering
Abstract
An early response to mechanical stimulation of bone cells in vitro is an increase in intracellular calcium concentration ([Ca 2+] i). This study analyzed the [Ca 2+]i wave area, magnitude, duration, rise time, fall time, and time to onset in individual osteoblasts for two identical bouts of mechanical stimulation separated by a 30-min rest period. The area under the [Ca 2+]i wave increased in the second loading bout compared to the first. This suggests that rest periods may potentiate mechanically induced intracellular calcium signals. Furthermore, many of the [Ca 2+]i wave parameters were strongly, positively correlated between the two bouts of mechanical stimulation. For example, in individual primary osteoblasts, if a cell had a large [Ca 2+]i wave area in the first bout it was likely to have a large [Ca 2+]i wave area in the second bout (r 2 = 0.933). These findings support the idea that individual bone cells have "calcium fingerprints" (i.e., a unique [Ca 2+]i wave profile that is reproducible for repeated exposure to a given stimulus).
Publication Title
Biomechanics and Modeling in Mechanobiology
Recommended Citation
Godin, L.,
Suzuki, S.,
Jacobs, C.,
Donahue, H.,
&
Donahue, S.
(2007).
Mechanically induced intracellular calcium waves in osteoblasts demonstrate calcium fingerprints in bone cell mechanotransduction.
Biomechanics and Modeling in Mechanobiology,
6(6), 391-398.
http://doi.org/10.1007/s10237-006-0059-5
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/4814