Effective Antibacterial Nanotextured Surfaces Based on Extreme Wettability and Bacteriophage Seeding

Бойнович, Л. Б.; Modin, Evgeny; Aleshkin, A. V.; Emelyanenko, Kirill A.; Zul'karneev, E R; Киселева, И. А.; Vasiliev, Alexander L.; Emelyanenko, Alexandre M.

doi:10.1021/acsanm.8b00090

Cited by 50 publications

(37 citation statements)

References 69 publications

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“…For the ZnO‐ER sample, the outermost were the ZnO NPs adhered to the aluminum substrate mediated by ER. During the antibacterial activity test, the outermost ZnO NPs may be detached from the ZnO‐ER sample, and consequently, the antibacterial activity of that was superior to that of the Zn substrate with native oxide . However, for the ZnO&ER sample, the outermost surface was heterogeneous with ER and ZnO.…”

Section: Resultsmentioning

confidence: 99%

ZnO superhydrophobic coating via convenient spraying and its biofouling resistance

Xie

et al. 2018

Surface & Interface Analysis

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The attachment of microbial biomass on solid surfaces, also referred to as biofouling, is a universal phenomenon that occurs in natural and engineering systems. However, traditional antibiofouling surfaces based on either the release of biocidal compounds or surface chemical/physical design have some drawbacks, such as the high cost, the complicated process, the low accuracy, and the limitation to achieve coatings over large area. Herein, to overcome these problems, a superhydrophobic coating is fabricated via spraying the mixture of hydrophobized zinc oxide nanoparticles and epoxy resin. The zinc oxide nanoparticles form a multiscale roughness, and the epoxy resin promotes the robustness of the coating. The so-formed superhydrophobic coating resists the attachment of protein, bacteria, and marine algae. It is expected that the so-developed superhydrophobic coating can be applied in the fields of biomedical instruments, antimicrobial material, marine platform, and ships.

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Section: Resultsmentioning

confidence: 99%

ZnO superhydrophobic coating via convenient spraying and its biofouling resistance

Xie

et al. 2018

Surface & Interface Analysis

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“…To check the viability of the bacterial cells adhered to the surface of the samples during 48 h of immersion, the protocol described in detail in [ 38 ] was used. Briefly, the samples withdrawn from the bacterial dispersion were rinsed with a sterile physiological solution to remove non-attached cells and then vortexed in 5 mL of physiological solution for 10 min at 150 rpm; then, a 0.1 mL aliquot of the resulting dispersion was applied onto a Petri dish containing sterile growth medium (Mueller-Hinton agar) and conditioned for 24 h at 37 °C.…”

Section: Methodsmentioning

confidence: 99%

“…Therefore, the mechanisms of the bactericidal effect of such surfaces should be like those mentioned above and characteristic of the nanoparticles. Furthermore, the additional damaging effect of physico-mechanical forces exerted by the rough surface on the bacterial cell membrane [ 37 , 38 ] significantly contributes to the antibacterial activity. Finally, for non-wetting hierarchical surfaces, two additional mechanisms of antibacterial action come into play, namely the drastically reduced contact area between the substrate and the bacterial dispersion and the decreased adhesion force between the cell and the superhydrophobic surface.…”

Section: Introductionmentioning

confidence: 99%

“…Finally, for non-wetting hierarchical surfaces, two additional mechanisms of antibacterial action come into play, namely the drastically reduced contact area between the substrate and the bacterial dispersion and the decreased adhesion force between the cell and the superhydrophobic surface. The latter inhibits the primary adhesion of the bacterial cells, causing a reduced cell deposition to the superhydrophobic surface and thus reducing bacterial contamination [ 5 , 38 , 39 , 40 ].…”

Section: Introductionmentioning

confidence: 99%

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The Mechanisms of Antibacterial Activity of Magnesium Alloys with Extreme Wettability

et al. 2021

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In this study, we applied the method of nanosecond laser treatment for the fabrication of superhydrophobic and superhydrophilic magnesium-based surfaces with hierarchical roughness when the surface microrelief is evenly decorated by MgO nanoparticles. The comparative to the bare sample behavior of such surfaces with extreme wettability in contact with dispersions of bacteria cells Pseudomonas aeruginosa and Klebsiella pneumoniae in phosphate buffered saline (PBS) was studied. To characterize the bactericidal activity of magnesium samples with different wettability immersed into a bacterial dispersion, we determined the time variation of the planktonic bacterial titer in the dispersion. To explore the anti-bacterial mechanisms of the magnesium substrates, a set of experimental studies on the evolution of the magnesium ion concentration in liquid, pH of the dispersion medium, surface morphology, composition, and wettability was performed. The obtained data made it possible to reveal two mechanisms that, in combination, play a key role in the bacterial decontamination of the liquid. These are the alkalization of the dispersion medium and the collection of bacterial cells by microrods growing on the surface as a result of the interaction of magnesium with the components of the buffer solution.

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“…The main mechanisms of toxic action discussed in the literature are [2][3][4][5]: (1) the high reactivity of Mg in contact with aqueous media, leading to the formation of superoxide ions (O 2− ); (2) an excess of magnesium ions in the aqueous medium surrounding the cells, leading to osmotic effects that destroy cell's membranes; (3) an increase in pH during the corrosion of magnesium in biological media. Additionally, two mechanisms specific to any superhydrophobic material should be taken into account [28][29][30][31][32]: (4) the low adhesion of bacterial cells to the superhydrophobic surface; and (5) the mechanical damage of cell membranes in the cells deposited onto the surface. The analysis of mechanism (1), related to oxidation stress, is beyond the scope and technical capabilities of this study.…”

Section: Antibacterial Activity Of Superhydrophobic Coatings In Bacterial Dispersionsmentioning

confidence: 99%

Antimicrobial Activity and Degradation of Superhydrophobic Magnesium Substrates in Bacterial Media

Emelyanenko

Kaminsky

Пыцкий

et al. 2021

Metals

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The interest in magnesium-based materials is promoted by their biocompatibility, their bioresorbability, and their recently discovered antibacterial potential. Until now, the widespread use of magnesium alloys in different corrosive environments was inhibited by their weakly controllable degradation rate and poorly understood microbiologically induced corrosion behavior. To better understand the degradation and usability of magnesium-based alloys, in this study we have fabricated superhydrophobic coatings on a magnesium-based alloy, and analyzed the behavior of this alloy in bacterial dispersions of Pseudomonas aeruginosa and Klebsiella pneumoniae cells in phosphate-buffered saline. It was shown that the immersion of such coatings in bacterial dispersions causes notable changes in the morphology of the samples, dependent on the bacterial dispersion composition and the type of bacterial strain. The interaction of the superhydrophobic coatings with the bacterial dispersion caused the formation of biofilms and sodium polyphosphate films, which provided enhanced barrier properties in magnesium dissolution and hence in dispersion medium alkalization, eventually leading to the inhibition of magnesium substrate degradation. The electrochemical data obtained for superhydrophobic samples in continuous contact with corrosive bacterial dispersions for 48 h indicated a high level of anticorrosion protection.

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Effective Antibacterial Nanotextured Surfaces Based on Extreme Wettability and Bacteriophage Seeding

Cited by 50 publications

References 69 publications

ZnO superhydrophobic coating via convenient spraying and its biofouling resistance

ZnO superhydrophobic coating via convenient spraying and its biofouling resistance

The Mechanisms of Antibacterial Activity of Magnesium Alloys with Extreme Wettability

Antimicrobial Activity and Degradation of Superhydrophobic Magnesium Substrates in Bacterial Media

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