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Int. J. Mol. Sci. 2012, 13(10), 12584-12597; doi:10.3390/ijms131012584
Article

Optimized Anti-pathogenic Agents Based on Core/Shell Nanostructures and 2-((4-Ethylphenoxy)ethyl)-N-(substituted-phenylcarbamothioyl)-benzamides

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Received: 7 June 2012 / Revised: 29 August 2012 / Accepted: 11 September 2012 / Published: 1 October 2012
(This article belongs to the Section Biochemistry, Molecular Biology and Biophysics)
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Abstract

The purpose of this study was to design a new nanosystem for catheter surface functionalization with an improved resistance to Staphylococcus aureus ATCC 25923 and Pseudomonas aeruginosa ATCC 27853 colonization and subsequent biofilm development. New 2-((4 ethylphenoxy)methyl)-N-(substituted-phenylcarbamothioyl)-benzamides were synthesized and used for coating a core/shell nanostructure. Their chemical structures were elucidated by NMR, IR and elemental analysis, being in agreement with the proposed ones. Fe3O4/C12 of up to 5 nm size had been synthesized with lauric acid as a coating agent and characterized by XRD, FT-IR, TGA, TEM and biological assays. The catheter pieces were coated with the fabricated nanofluid in magnetic field. The microbial adherence ability was investigated in 6 multiwell plates by using culture based methods and Scanning Electron Microscopy (SEM). The nanoparticles coated with the obtained compounds 1ac inhibited the adherence and biofilm development ability of the S. aureus and P. aeruginosa tested strains on the catheter functionalized surface, as shown by the reduction of viable cell counts and SEM examination of the biofilm architecture. Using the novel core/shell/adsorption-shell to inhibit the microbial adherence could be of a great interest for the biomedical field, opening new directions for the design of film-coated surfaces with improved anti-biofilm properties.
Keywords: benzamides; thiourea derivatives; core/shell nanostructure; magnetite; anti-biofilm; biointerface application benzamides; thiourea derivatives; core/shell nanostructure; magnetite; anti-biofilm; biointerface application
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Limban, C.; Grumezescu, A.M.; Saviuc, C.; Voicu, G.; Predan, G.; Sakizlian, R.; Chifiriuc, M.C. Optimized Anti-pathogenic Agents Based on Core/Shell Nanostructures and 2-((4-Ethylphenoxy)ethyl)-N-(substituted-phenylcarbamothioyl)-benzamides. Int. J. Mol. Sci. 2012, 13, 12584-12597.

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