| Frequency specific modulation of bone adaptation by induced electric fields. | |
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MedLine Citation:
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PMID: 2232823 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A frequency specificity for the response of bone tissue to a physical stimulus is proposed. This is obtained by comparing the spectral power of exogenously induced electric fields to the efficacy of those fields to inhibit immobilization induced bone loss in an in vivo model of skeletal adaptation. Analysis of a family of related waveforms shows that the effectiveness of the induced electric fields could be related to the induced spectral power below approximately 75 Hz. The analysis suggests that bone tissue may be extremely sensitive to induced power levels at or below this frequency, as amplitude variations of less than a factor of two within this range correspond to significantly different bone remodeling responses. The analysis also suggests that bone tissue may be strongly frequency selective, with bone capable of responding specifically to induced power in this osteogenic frequency band, even though the band includes less than 0.1% of the total induced power. As normal functional activity generates strain components encompassing this osteogenic frequency band, a distinct frequency selectivity may indicate that the tissue response is tuned to a specific endogenous stimulus. A detailed characterization of the frequency response of bone tissue could well point to the primary source for the control of the cells responsible for functional adaptation in the skeleton. |
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Authors:
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K J McLeod; C T Rubin |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
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Title: Journal of theoretical biology Volume: 145 ISSN: 0022-5193 ISO Abbreviation: J. Theor. Biol. Publication Date: 1990 Aug |
Date Detail:
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Created Date: 1990-12-19 Completed Date: 1990-12-19 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0376342 Medline TA: J Theor Biol Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 385-96 Citation Subset: IM; S |
Affiliation:
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Department of Orthopaedics, School of Medicine, State University of New York, Stony Brook 11794-8181. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adaptation, Physiological
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physiology* Animals Bone and Bones / physiology* Electricity Turkeys |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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