Cells under stress: a non-destructive evaluation of adhesion by ultrasounds

The adhesion process plays a major role in the development of osteoblastic cells on various substrates used in orthopaedic applications such as metals, bioceramics, or glass. High frequency and low power ultrasounds seem to be an appropriate tool for an evaluation of interface mechanical properties....

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Bibliographic Details
Published in:Biomolecular engineering 2002-08, Vol.19 (2), p.219-225
Main Authors: Myrdycz, A, Callens, Dorothée, Kot, K, Monchau, F, Radziszewski, E, Lefebvre, A, Hildebrand, H.F
Format: Article
Language:English
Subjects:
Acoustic Stimulation - methods
Acoustical power threshold
Animals
Cell adhesion
Cell Adhesion - physiology
Cell Line
Glass
Interferometry laser
Mice
Nickel
Osteoblast
Osteoblasts - diagnostic imaging
Osteoblasts - physiology
Osteoblasts - ultrastructure
Sensitivity and Specificity
Stress, Mechanical
Surface Properties
Titanium
Ultrasonography - methods
Ultrasound
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Summary:The adhesion process plays a major role in the development of osteoblastic cells on various substrates used in orthopaedic applications such as metals, bioceramics, or glass. High frequency and low power ultrasounds seem to be an appropriate tool for an evaluation of interface mechanical properties. Is it a non-destructive method? We investigated osteoblastic cell cultures, maintained in their medium with high frequency, bulk longitudinal waves. The influence of both acoustical frequency and acoustical power on cell adhesion is evaluated by cell detachment ratio and re-adhesion ratio. We demonstrate the existence of a power threshold depending on the frequency, allowing optimal cellular detachment and re-adhesion. Finally, a qualitative study of the detachment phenomena is performed by use of scanning electron microscopy (SEM), Confocal Laser Scanning Microscopy and cytochemical labelling.
ISSN:1389-0344
1878-559X
DOI:10.1016/S1389-0344(02)00035-7