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- W2329471065 abstract "Bacteria in biofilms are much more resistant to antibiotics and microbicides as compared to their planktonic stage. Thus, to achieve the same antibacterial efficacy, a much higher dose of antibiotics is required for biofilm bacteria. However, the widespread use of antibiotics has been recognized as the main cause for the emergence of antibiotic-resistant microbial species, which has now become a major public health crisis globally. In this work, we present an efficient nonantibiotic-based strategy for disrupting biofilms using carboxymethyl chitosan (CMCS) coated on magnetic iron oxide nanoparticles (CMCS-MNPs). CMCS-MNPs demonstrate strong bactericidal activities against both Gram-positive Staphylococcus aureus (S. aureus) and Gram-negative Escherichia coli (E. coli) planktonic cells. More than 99% S. aureus and E. coli planktonic cells were killed after incubation with CMCS-MNPs for 10 and 5 h, respectively. In the presence of a magnetic field (MF), CMCS-MNPs can effectively penetrate into both S. aureus and E. coli biofilms, resulting in a reduction of viable cells counts by 84% and 95%, respectively, after 48 h incubation, as compared to the control experiment without CMCS-MNPs or CMCS. CMCS-MNPs are noncytotoxic toward mammalian cells and can potentially be a useful antimicrobial agent to eliminate both planktonic and biofilm bacteria." @default.
- W2329471065 created "2016-06-24" @default.
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- W2329471065 date "2012-09-26" @default.
- W2329471065 modified "2023-10-16" @default.
- W2329471065 title "Carboxymethyl Chitosan-Functionalized Magnetic Nanoparticles for Disruption of Biofilms of Staphylococcus aureus and Escherichia coli" @default.
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- W2329471065 doi "https://doi.org/10.1021/ie301522w" @default.
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