Incredible antibacterial activity of noble metal functionalized magnetic core–zeolitic shell nanostructures

Padervand, Mohsen; Janatrostami, S.; Karanji, Ahmad Kiani; Gholami, Mohammad Reza

doi:10.1016/j.msec.2013.10.027

Cited by 10 publications

(1 citation statement)

References 31 publications

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“…Kim et al [22] supposed that the antimicrobial activity of Ag + ions is probably due to the disruption of cross-linking of DNA helix. It has been proposed that the binding of the silver ions to the nitrogen atom of guanine in DNA leads to the inhibition of the cell replication [23][24][25]. To elucidate this, a theoretical study was performed to calculate the dissociation enthalpies and to find the more likely states in which the metallic species placed close to the DNA nucleotides disrupt the hydrogen bonds between the bases (Fig.…”

Section: Theoretical Study Of the Interactions Between The Metallic Cmentioning

confidence: 99%

Copper, gold, and silver decorated magnetic core–polymeric shell nanostructures for destruction of pathogenic bacteria

Padervand

Karanji

Elahifard

2017

Russ. J. Phys. Chem.

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Fe 3 O 4 magnetic nanoparticles (MNPs) were prepared by co-precipitation method. The nanoparticles were silica coated using TEOS, and then modified by the polymeric layers of polypropylene glycol (PPG) and polyethylene glycol (PEG). Finally, the core-shell samples were decorated with Ag, Au, and Cu nanoparticles. The products were characterized by vibrating sample magnetometry (VSM), TGA, SEM, XRD, and FTIR methods. The antibacterial activity of the prepared samples was evaluated in inactivation of E. coli and S. aureus microorganisms, representing the Gram-negative and Gram-positive species, respectively. The effect of solid dosage, bacteria concentration and type of polymeric modifier on the antibacterial activity was investigated. TEM images of the bacteria were recorded after the treatment time and according to the observed changes in the cell wall, the mechanism of antibacterial action was discussed. The prepared nanostructures showed high antibacterial activity against both Gram-negative and Gram-positive bacteria. This was due to the leaching of metal ions which subsequently led to the lysis of bacteria. A theoretical investigation was also done by studying the interaction of loaded metals with the nucleotide components of the microorganism DNA, and the obtained results were used to explain the experimental data. Finally, based on the observed inactivation curves, we explain the antibacterial behavior of the prepared nanostructures mathematically.

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Section: Theoretical Study Of the Interactions Between The Metallic Cmentioning

confidence: 99%

Copper, gold, and silver decorated magnetic core–polymeric shell nanostructures for destruction of pathogenic bacteria

Padervand

Karanji

Elahifard

2017

Russ. J. Phys. Chem.

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Fabrication of Nanostructured Surfaces Towards the Prevention of Hospital-Acquired Infection

Paikra,

Bauri,

Mishra

2024

J Clust Sci

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Curing of Silanol Defects and Tailoring Hierarchical Porosity in ZSM-5 Using PMMA

Ozhukka Parambil,

Kumari,

Padmanabhan

2023

Iran J Sci

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Incredible antibacterial activity of noble metal functionalized magnetic core–zeolitic shell nanostructures

Cited by 10 publications

References 31 publications

Copper, gold, and silver decorated magnetic core–polymeric shell nanostructures for destruction of pathogenic bacteria

Copper, gold, and silver decorated magnetic core–polymeric shell nanostructures for destruction of pathogenic bacteria

Fabrication of Nanostructured Surfaces Towards the Prevention of Hospital-Acquired Infection

Curing of Silanol Defects and Tailoring Hierarchical Porosity in ZSM-5 Using PMMA

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