Selective Antimicrobial and Antibiofilm Disrupting Properties of Functionalized Diamond Nanoparticles Against Escherichia coli and Staphylococcus aureus
作者： Manakamana Khanal , Viktoria Raks , Rahaf Issa , Volodymyr Chernyshenko , Alexandre Barras
关键词: Staphylococcus aureus 、 Bacteria 、 Ampicillin 、 Mannose 、 Microbiology 、 Nanotechnology 、 Surface modification 、 Escherichia coli 、 Antimicrobial 、 Biofilm 、 Chemistry 、 General Materials Science 、 General chemistry 、 Condensed matter physics
摘要: Diamond nanoparticles (NDs) have demonstrated great promise as useful materials in a variety of biomedical settings. In this paper, the antimicrobial and antibiofi lm activities variously functionalized NDs against two common bacterial targets Gram-negative bacterium Escherichia coli Gram-positive Staphylococcus aureus are compared. Hydroxylated (ND-OH), aminated (ND-NH 2 ), carboxylated (ND-COOH), mannose (ND-Mannose), tri-thiomannoside (ND-Man 3 or tri-thiolactoside (ND-Lac 3) - modifi ed fabricated evaluated present work. Of these, mannose-modified found to interfere most strongly with survival S. aureus, but not influence growth E. . contrast, particles featuring lactosyl units opposite effect on growth. Sugar-functionalized NPs reported display antibacterial effects rare. Only ND-COOH seen any profile coli, moderate. On other hand, both ND-NH inhibit -induced biofilm formation at levels comparable known disruptor, ampicillin (albeit concentrations 100 μg mL -1). However, none modified examined here reveal significant activity disruptors even highest studied.
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