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Correlation between substratum roughness and wettability, cell adhesion, and cell migration

Correlation between substratum roughness and wettability, cell adhesion, and cell migration Cell adhesion and spreading of chick embryo vascular and corneal explants grown on rough and smooth poly (methyl methacrylate) (PMMA) were analyzed to test the cell response specificity to substratum surface properties. Different degrees of roughness were obtained by sandblasting PMMA with alumina grains. Hydrophilic and hydrophobic components of the surface free energy (SFE) were calculated according to Good‐van Oss's model. Contact angles were determined using a computerized angle meter. The apolar component of the SFE, γsLW, increased with a slight roughness whereas the basic component, γs−, decreased. The acido‐basic properties disappeared as roughness increased. Incubation of PMMA in culture medium, performed to test the influence of the biological environment, allowed surface adsorption of medium proteins which annihilated roughness effect and restored hydrophilic properties. An organotypic culture assay was carried out in an attempt to relate the biocompatibility to substratum surface state. Cell migration was calculated from the area of cell layer. Cellular adhesion was determined by measuring the kinetic of release of enzymatically dissociated cells. A slight roughness raised the migration area to an upper extent no matter which cell type. Enhancement of the cell adhesion potential was related to the degree of roughness and the hydrophobicity. © 1997 John Wiley & Sons, Inc. J Biomed Mater Res, 36, 99–108, 1997. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Biomedical Materials Research Part A Wiley

Correlation between substratum roughness and wettability, cell adhesion, and cell migration

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References (34)

Publisher
Wiley
Copyright
Copyright © 1997 Wiley Subscription Services, Inc., A Wiley Company
ISSN
1549-3296
eISSN
1552-4965
DOI
10.1002/(SICI)1097-4636(199707)36:1<99::AID-JBM12>3.0.CO;2-E
Publisher site
See Article on Publisher Site

Abstract

Cell adhesion and spreading of chick embryo vascular and corneal explants grown on rough and smooth poly (methyl methacrylate) (PMMA) were analyzed to test the cell response specificity to substratum surface properties. Different degrees of roughness were obtained by sandblasting PMMA with alumina grains. Hydrophilic and hydrophobic components of the surface free energy (SFE) were calculated according to Good‐van Oss's model. Contact angles were determined using a computerized angle meter. The apolar component of the SFE, γsLW, increased with a slight roughness whereas the basic component, γs−, decreased. The acido‐basic properties disappeared as roughness increased. Incubation of PMMA in culture medium, performed to test the influence of the biological environment, allowed surface adsorption of medium proteins which annihilated roughness effect and restored hydrophilic properties. An organotypic culture assay was carried out in an attempt to relate the biocompatibility to substratum surface state. Cell migration was calculated from the area of cell layer. Cellular adhesion was determined by measuring the kinetic of release of enzymatically dissociated cells. A slight roughness raised the migration area to an upper extent no matter which cell type. Enhancement of the cell adhesion potential was related to the degree of roughness and the hydrophobicity. © 1997 John Wiley & Sons, Inc. J Biomed Mater Res, 36, 99–108, 1997.

Journal

Journal of Biomedical Materials Research Part AWiley

Published: Jul 1, 1997

Keywords: ; ; ;

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