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Issue 32, 2016
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Antibacterial bioadhesive layer-by-layer coatings for orthopedic applications

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Abstract

In this study, thin LbL films were produced by combining the adhesive properties of the hyaluronic acid–dopamine conjugate with the bioactivity and bactericidal properties of silver doped bioactive glass nanoparticles. The build-up of these films was investigated by quartz crystal microbalance with dissipation monitoring. LbL coatings were then constructed on a glass substrate for further characterization. We found that these antimicrobial bioinspired films display enhanced adhesive strength. In vitro bioactivity tests were performed by immersing them in simulated body fluid solution for 14 days where the constructed films promoted the formation of a bone-like apatite layer. From microbiological assays, it was found that coatings containing silver doped nanoparticles exhibited a remarkable antibacterial effect against Staphylococcus aureus and Escherichia coli cultures. Finally, in vitro cellular behavior tests showed enhanced cell adhesion, proliferation and viability for these antibacterial bioadhesive films. Therefore, the constructed thin films showed promising properties and evidenced great potential to be used as coatings for orthopedic implants.

Graphical abstract: Antibacterial bioadhesive layer-by-layer coatings for orthopedic applications

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Supplementary files

Article information


Submitted
05 Apr 2016
Accepted
15 Jul 2016
First published
15 Jul 2016

J. Mater. Chem. B, 2016,4, 5385-5393
Article type
Paper

Antibacterial bioadhesive layer-by-layer coatings for orthopedic applications

A. L. Carvalho, A. C. Vale, M. P. Sousa, A. M. Barbosa, E. Torrado, J. F. Mano and N. M. Alves, J. Mater. Chem. B, 2016, 4, 5385
DOI: 10.1039/C6TB00841K

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