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Does the Antibacterial Activity of Silver Nanoparticles Depend on the Shape of the Nanoparticle? A Study of the Gram-Negative Bacterium Escherichia coli
Open accessAbstract
In this work we investigated the antibacterial properties of differently shaped silver nanoparticles against the gram-negative bacterium Escherichia coli , both in liquid systems and on agar plates. Energy-filtering transmission electron microscopy images revealed considerable changes in the cell membranes upon treatment, resulting in cell death. Truncated triangular silver nanoplates with a {111} lattice plane as the basal plane displayed the strongest biocidal action, compared with spherical and rod-shaped nanoparticles and with Ag + (in the form of AgNO 3 ). It is proposed that nanoscale size and the presence of a {111} plane combine to promote this biocidal property. To our knowledge, this is the first comparative study on the bactericidal properties of silver nanoparticles of different shapes, and our results demonstrate that silver nanoparticles undergo a shape-dependent interaction with the gram-negative organism E. coli .
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Citations
Cited by
Antimicrobial activity of metals: mechanisms, molecular targets and applications
Lemire, J. A., Harrison, J. J., & Turner, R. J. (2013) · Nature Reviews Microbiology · doi:10.1038/nrmicro3028 · Cited by 2,746
Li, Q., Mahendra, S., Lyon, D. Y., Brunet, L., Liga, M. V., Li, D., & Alvarez, P. J. J. (2008) · Water Research · doi:10.1016/j.watres.2008.08.015 · Cited by 2,385
Negligible Particle-Specific Antibacterial Activity of Silver Nanoparticles
Xiu, Z.-M., Zhang, Q.-B., Puppala, H. L., Colvin, V. L., & Alvarez, P. J. J. (2012) · Nano Letters · doi:10.1021/nl301934w · Cited by 2,108
Environmental behavior and ecotoxicity of engineered nanoparticles to algae, plants, and fungi
Navarro, E., Baun, A., Behra, R., Hartmann, N. B., Filser, J., Miao, A.-J., Quigg, A., Santschi, P. H., & Sigg, L. (2008) · Ecotoxicology · doi:10.1007/s10646-008-0214-0 · Cited by 1,772
Silver nanoparticles: A new view on mechanistic aspects on antimicrobial activity
Durán, N., Durán, M., de Jesus, M. B., Seabra, A. B., Fávaro, W. J., & Nakazato, G. (2016) · Nanomedicine: Nanotechnology, Biology and Medicine · doi:10.1016/j.nano.2015.11.016 · Cited by 1,542
Metadata
- Authors
- Pal, S., Tak, Y. K., & Song, J. M.
- Venue
- Applied and Environmental Microbiology
- Publisher
- American Society for Microbiology
- Published
- 2007-03-15
- Volume
- 73
- Issue
- 6
- Pages
- 1712-1720
- ISSN
- 0099-2240 (ISSN-L)
- 1098-5336
- OpenAlex
- W2147819711
- Cited by
- 4,040
- References
- 0
- FWCI
- 44.43
- Type
- journal article
- Language
- en
- Open access
- green
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- Pal, S., Tak, Y. K., & Song, J. M. (2007). Does the Antibacterial Activity of Silver Nanoparticles Depend on the Shape of the Nanoparticle? A Study of the Gram-Negative Bacterium Escherichia coli. Applied and Environmental Microbiology. https://doi.org/10.1128/aem.02218-06
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