| Development of a technique to determine strains in tendons using the cell nuclei. | |
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MedLine Citation:
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PMID: 12454427 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Tenocytes detect mechanical stimuli in vivo, and respond through mechanotransduction pathways to initiate matrix remodelling in tendons. Due to the crimped nature of tendon fascicles, the strain field throughout is non-homogeneous. The present study has developed a means to quantify the local strain fields within a fascicle by monitoring the relative movement and deformation of fluorescently labelled tenocyte nuclei. A stage mounted test rig was designed to apply tensile strain to fascicles. Rat tail and bovine extensor tendons were harvested for analysis, and the cell nuclei stained and visualised using an inverted confocal microscope. As the fascicles were subjected to gross strains of up to 5%, the movement of selected tenocyte nuclei were recorded. Results from a series of cell nuclei from both tendon sources revealed that local strains were significantly less than the applied strain. The nuclei length to width ratio, an indicator of cell deformation, also increased with applied strain, most significantly between 2 and 3% applied strain. |
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Authors:
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H R C Screen; D A Lee; D L Bader; J C Shelton |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Biorheology Volume: 40 ISSN: 0006-355X ISO Abbreviation: Biorheology Publication Date: 2003 |
Date Detail:
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Created Date: 2002-11-27 Completed Date: 2003-03-13 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0372526 Medline TA: Biorheology Country: Netherlands |
Other Details:
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Languages: eng Pagination: 361-8 Citation Subset: IM; S |
Affiliation:
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IRC in Biomedical Materials and Medical Engineering Division, Department of Engineering, Queen Mary, University of London, Mile End Road, London, E1 4NS, UK. H.R.C.Crane@qmul.ac.uk |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Cattle Cell Nucleus / physiology*, ultrastructure Male Mechanotransduction, Cellular / physiology* Microscopy, Confocal Physical Stimulation / methods Rats Rats, Wistar Stress, Mechanical Tail Tendons / physiology*, ultrastructure |
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