Antibacterial properties and regenerative potential of Sr and Ce doped fluorapatites; a potential solution for peri-implantitis.

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ID: 63579
2019
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Abstract
Scaffolds and implants in orthopaedics and regenerative dentistry usually fail because of bacterial infections. A promising solution would be the development of biomaterials with both significant regenerative potential and enhanced antibacterial activity. Working towards this direction, fluorapatite was synthesised and doped with Sr and Ce ions in order to tailor its properties. After experiments with four common bacteria (i.e. E. Coli, S. Aureus, B. Subtilis, B. Cereus), it was found that the undoped and the Ce doped fluorapatites present better antibacterial response than the Sr doped material. The synthesised minerals were incorporated into chitosan scaffolds and tested with Dental Pulp Stem Cells (DPSCs) to check their regenerative potential. As was expected, the scaffolds containing Sr-doped fluorapatite, presented high osteoconductivity leading to the differentiation of the DPSCs into osteoblasts. Similar results were obtained for the Ce-doped material, since both the concentration of osteocalcin and the RUNX2 gene expression were considerably higher than that for the un-doped mineral. Overall, it was shown that doping with Ce retains the good antibacterial profile of fluorapatite and enhances its regenerative potential, which makes it a promising option for dealing with conditions where healing of hard tissues is compromised by bacterial contamination.
Reference Key
anastasiou2019antibacterialscientific Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Anastasiou, A D;Nerantzaki, M;Gounari, E;Duggal, M S;Giannoudis, P V;Jha, A;Bikiaris, D;
Journal Scientific reports
Year 2019
DOI
10.1038/s41598-019-50916-4
URL
Keywords
antibacterial activity structure-activity relationship hybrid compounds tetrazole

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