Nanoparticles against resistant  Pseudomonas  spp.

Venegas, Mia A.; Bollaert, Matthew D.; Jafari, Alireza; Bondoc, Jasper Marc G.; J, Twilley; Thompson, W. A.; Movahedzadeh, Farahnaz

doi:10.1016/j.micpath.2018.03.023

Cited by 5 publications

(2 citation statements)

References 11 publications

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“…The minimum bactericidal concentration is identified by determining the lowest concentration of antibacterial agent that reduces the viability of the initial bacterial inoculum by ≥99.9%. The MBC is complementary to MIC; whereas, MIC test demonstrates the lowest level of antimicrobial agent that inhibits growth, MBC test demonstrates the lowest level of antimicrobial agent that results in microbial death 49,50 . The fractional inhibitory concentration was used for combination of materials based on the following equation:where A refers to TiO 2 nanoparticles and B refers to ZnO nanoparticles.…”

Section: Methodsmentioning

confidence: 99%

Antimicrobial activity of Titanium dioxide and Zinc oxide nanoparticles supported in 4A zeolite and evaluation the morphological characteristic

Azizi‐Lalabadi

Ehsani

Divband

et al. 2019

Sci Rep

291

103

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In this study, the antimicrobial activity of titanium dioxide (TiO2), zinc oxide (ZnO), and TiO2/ZnO nanoparticles supported into 4A zeolite (4A z) was assessed. Based on antimicrobial experiments, minimum inhibitory concentration (MIC90), minimum bactericidal concentration (MBC), fractional inhibitory concentration (FIC) and disc diffusion test were determined after 24 h of contact with the prepared nanocomposites. These results are in agreements with the results of disc diffusion test. During the experiments, the numbers of viable bacterial cells of Staphylococcus aureus, Pseudomonas fluorescens, Listeria monocytogenes and Escherichia coli O157:H7 decreased significantly. The crystallinity and morphology of nanoparticles were investigated by X-ray diffraction patterns (XRD), elemental mapping at the microstructural level by scanning electron microscopy (SEM) with energy dispersive X-ray spectrometry (EDS), and transmission electron microscopy (TEM). As a result, it was demonstrated that TiO2/ZnO nanoparticles supported in 4A zeolite could lead to an optimum activity as antimicrobial agents.

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Section: Methodsmentioning

confidence: 99%

Antimicrobial activity of Titanium dioxide and Zinc oxide nanoparticles supported in 4A zeolite and evaluation the morphological characteristic

Azizi‐Lalabadi

Ehsani

Divband

et al. 2019

Sci Rep

291

103

View full text Add to dashboard Cite

show abstract

“…; Venegas et al . ). Small size of NPs can contribute to antimicrobial effects facilitating their penetration across bacterial membranes (Chatterjee et al .…”

Section: Introductionmentioning

confidence: 97%

Effects of iron oxide (Fe ₃ O ₄ ) nanoparticles on Escherichia coli antibiotic‐resistant strains

et al. 2019

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Aims: Antibiotic resistance of different bacteria requires the development of alternative approaches for overcoming this phenomenon. The antibacterial effects of iron oxide (Fe 3 O 4 ) nanoparticles (NPs) (from 50 to 250 lg ml À1 ) on Escherichia coli antibiotic-resistant strains have been aimed. Methods and Results: The study was performed with ampicillin-resistant E. coli DH5a-pUC18 and kanamycin-resistant E. coli pARG-25 stains. Specific growth rate of bacteria (l), lag phase duration and colony-forming units (CFU) were determined to evaluate growth properties. Fe 3 O 4 NPs (average size of 10Á64 AE 4Á73 nm) coated with oleic acid and synthesized by modified coprecipitation method were used. The medium pH, H + efflux, membrane H + conductance, redox potential determinations and H 2 yield assay were done using potentiometer methods. Growth properties were changed by NPs in concentration-dependent manner. NPs decreased (up to twofold) H + -fluxes through bacterial membrane more in E. coli in the presence of the N,N 0dicyclohexylcarbodiimide, inhibitor of ATPase, indicating that antibacterial activity of these NPs was connected with ATP-associated metabolism. Membrane-associated H 2 production was lowered up to twofold. Moreover, the synergetic interactions of NPs and antibiotics were found: combination of NPs and antibiotics provided the higher H + conductance, lower H + -fluxes and H 2 yield. Conclusions: Fe 3 O 4 NPs can be suggested as alternative antibacterial agents, which can substitute antibiotics in different applications. Significance and Impact of the Study: The antibacterial effects of Fe 3 O 4 NPs on the growth properties and membrane activity of E. coli antibiotic-resistant strains have been demonstrated. These NPs have potential as antibacterial agents, which can substitute for antibiotics in bacterial disease treatment in biomedicine, pharmaceutical and environmental applications.

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Metal‐Based Nanomaterials in Biomedical Applications: Antimicrobial Activity and Cytotoxicity Aspects

Makvandi

Wang

Zare

et al. 2020

Adv Funct Materials

518

368

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Microbial colonization on material surfaces is ubiquitous. Biofilms derived from surface-colonized microbes pose serious problems to the society from both an economical perspective and a health concern. Incorporation of antimicrobial nanocompounds within or on the surface of materials, or by coatings, to prevent microbial adhesion or kill the microorganisms after their attachment to biofilms, represents an important strategy in an increasingly challenging field. Over the last decade, many studies have been devoted to preparing meta-based nanomaterials that possess antibacterial, antiviral, and antifungal activities to combat pathogen-related diseases. Herein, an overview on the state-of-the-art antimicrobial nanosized metal-based compounds is provided, including metal and metal oxide nanoparticles as well as transition metal nanosheets. The antimicrobial mechanism of these nanostructures and their biomedical applications such as catheters, implants, medical delivery systems, tissue engineering, and dentistry are discussed. Their properties as well as potential caveats such as cytotoxicity, diminishing efficacy, and induction of antimicrobial resistance of materials incorporating these nanostructures are reviewed to provide a backdrop for future research.

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Nanoparticles against resistant Pseudomonas spp.

Cited by 5 publications

References 11 publications

Antimicrobial activity of Titanium dioxide and Zinc oxide nanoparticles supported in 4A zeolite and evaluation the morphological characteristic

Antimicrobial activity of Titanium dioxide and Zinc oxide nanoparticles supported in 4A zeolite and evaluation the morphological characteristic

Effects of iron oxide (Fe ₃ O ₄ ) nanoparticles on Escherichia coli antibiotic‐resistant strains

Metal‐Based Nanomaterials in Biomedical Applications: Antimicrobial Activity and Cytotoxicity Aspects

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Nanoparticles against resistant Pseudomonas spp.

Cited by 5 publications

References 11 publications

Antimicrobial activity of Titanium dioxide and Zinc oxide nanoparticles supported in 4A zeolite and evaluation the morphological characteristic

Antimicrobial activity of Titanium dioxide and Zinc oxide nanoparticles supported in 4A zeolite and evaluation the morphological characteristic

Effects of iron oxide (Fe 3 O 4 ) nanoparticles on Escherichia coli antibiotic‐resistant strains

Metal‐Based Nanomaterials in Biomedical Applications: Antimicrobial Activity and Cytotoxicity Aspects

Contact Info

Product

Resources

About

Effects of iron oxide (Fe ₃ O ₄ ) nanoparticles on Escherichia coli antibiotic‐resistant strains