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

International Journal of Molecular Sciences

Carmen Limban⁴  Alexandru Mihai Grumezescu¹  Crina Saviuc²  Georgeta Voicu¹  Gentiana Predan²  Robert Sakizlian³ 

[1] Department of Science and Engineering of Oxidic Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Polizu Street no 1-7, 011061 Bucharest, Romania; E-Mail:;Department of Microbiology, Faculty of Biology, Universtity of Bucharest, Aleea Portocalelor no. 1-3, 060101 Bucharest, Romania; E-Mails:;Department of Physical Education and Sport, University of Bucharest, Bvd. M. Kogalniceanu 36-46, Bucharest, Romania; E-Mail:;Department of Pharmaceutical Chemistry, “Carol Davila” University of Medicine and Pharmacy, Traian Vuia no.6, 020956 Bucharest, Romania; E-Mail:

关键词: benzamides;    thiourea derivatives;    core/shell nanostructure;    magnetite;    anti-biofilm;    biointerface application;   

DOI  :  10.3390/ijms131012584

来源: mdpi

【 摘 要 】

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 1a–c 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.

【 授权许可】

CC BY   
© 2012 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.