Enhancing Staphylococcus aureus sterilization of stainless steel by the synergistic effect of surface structure and physical washing

Du, Cezhi; Wang, Chengyong; Sui, Jianbo; Zheng, Lijuan

doi:10.1016/j.colsurfb.2020.111393

Cited by 7 publications

(4 citation statements)

References 56 publications

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“…In the liquid flow environment, the hydrophilic surfaces with nanostructures could decrease the bacterial retention due to the shear force generated by the cooperation of the nanostructure and the water flow. − To understand the underlying mechanism of the LIPSS surfaces with optimal antibacterial performance, the adhesion behaviors of S. aureus on different surfaces were evaluated.…”

Section: Resultsmentioning

confidence: 99%

Structure-Element Surface Modification Strategy Enhances the Antibacterial Performance of Zr-BMGs

Yang

Zheng

et al. 2022

ACS Appl. Mater. Interfaces

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Zirconium-based metallic glasses (Zr-BMGs) have attracted tremendous attention in healthcare fields, especially in the design of surgical tools and orthopedic implants, due to their unique amorphous structure; however, the application of Zr-BMG-based medical devices is hindered by bacterial contamination. Here, a structure-element strategy is proposed to improve the antibacterial performance of Zr-BMGs by surface laser nanostructuring and silver nanoparticle (AgNP) deposition. The laser nanostructuring process generates a disordered nanoparticle structure (NP) and laser-induced periodic surface structure (LIPSS) to decrease the surface bacterial adhesion and increase the internal antimicrobial ion release. Moreover, after Ag deposition and hydrogen peroxide (H2O2) treatment, the antibacterial adhesion ability of the Zr-BMG surface can be further improved without any influence on the crystallization of Zr-BMGs and the release of antibacterial copper/nickel (Cu/Ni). The antibacterial effect of the LIPSS and the NP surfaces presents over 90% bacterial killing ratio, which is superior to that of the naked Zr-BMGs with less than 60% bacterial killing ratio. In vitro and in vivo tests show that the Ag-deposited and H2O2-treated LIPSS surfaces exhibit an optimal balance between the antibacterial property and the biocompatibility compared with the polished, NP structured or LIPSS structured surfaces. It is assumed that such structure-element surface modification strategy can improve the antibacterial activity of metal-containing surgical tools and orthopedic implants, improving the success rate of medical treatment.

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Section: Resultsmentioning

confidence: 99%

Structure-Element Surface Modification Strategy Enhances the Antibacterial Performance of Zr-BMGs

Yang

Zheng

et al. 2022

ACS Appl. Mater. Interfaces

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“…Antibacterial surfaces can be achieved by physical antibacterial adhesion or chemical antibacterial activity. ,, For physical antibacterial adhesion methods, surface structures can be fabricated to decrease bacterial adhesion as well as the interaction between bacterial membranes and material surfaces . These surface micro-/nanostructures decrease the contact area between materials and bacteria, which results in lower adhesion force. ,, In this way, the topography and roughness of surfaces can be analyzed as an initial antibacterial evaluation. , On the other hand, chemical antibacterial activity is usually achieved by eliminating bacteria with antibacterial elements. , Ag, Cu, and ROS are usually used for improving the antibacterial performance of surfaces because these species destroy bacterial cell membranes and DNA. ,, In terms of physical antibacterial adhesion, the existence of LIPSS significantly decreases the bacterial adhesion rate on the 316L stainless steel, TC4 titanium alloy, and Zr-based bulk metallic glass specimens. As shown in Figure , the laser-induced surface structures decrease the contact area available to bacteria on the material surfaces.…”

Section: Discussionmentioning

confidence: 99%

“…The size of individual surface features and the average distance between these features were modified to inhibit the penetration of bacteria, reducing the contact interface area between individual bacteria and the metal surface . Du et al demonstrated that LIPSS on zirconium-based bulk metallic glass (Zr-BMG) and 316L stainless steel efficiently decreased bacterial adhesion rates with excellent biocompatibility. , This demonstrated the antibacterial behavior of LIPSS on biometals. However, a comparison of the LIPSS antibacterial behavior on different biometals has not yet been reported.…”

Section: Introductionmentioning

confidence: 99%

Antibacterial Performance of Zr-BMG, Stainless Steel, and Titanium Alloy with Laser-Induced Periodic Surface Structures

Wang

Zhang

et al. 2021

ACS Appl. Bio Mater.

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A laser-induced periodic surface structure (LIPSS) was shown to have antibacterial adhesion properties in previous research. In this study, the antibacterial performance of LIPSS on traditional biometals (stainless steel and titanium alloy) and a potential biometal (zirconium-based bulk metallic glass, Zr-BMG) was investigated. A femtosecond laser was used to fabricate LIPSS on the specimens. Gram-negative Escherichia coli (E. coli) and Gram-positive Staphylococcus aureus (S. aureus) were used to examine the antibacterial behavior of the LIPSS samples. The bacterial adhesion force on each specimen was evaluated by an atomic force microscopy (AFM) cell probe. The results showed that the LIPSS on all three metal surfaces significantly lowered antibacterial adhesion compared to polished metal specimens. E. coli demonstrated a higher adhesion force but a lower surface adhesion rate compared to S. aureus. The Zr-BMG specimen with LIPSS has multiple antimicrobial mechanisms (physical antiadhesion and chemical elimination), while the traditional biometals (316L and TC4) mainly offer physical antiadhesion. Finally, an in vitro/vivo study showed that specimens with LIPSS surfaces did not significantly affect the biocompatibility of the specimens. This study reveals that the Zr-BMG specimen with femtosecond laser-processed LIPSS is an ideal choice for achieving an antibacterial surface.

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“…Several studies focusing on the balance between mechanical and chemical actions has been found in the field of microbial stains (Bénézech & Faille, 2018; Du et al, 2021; Faille et al, 2013; Tango et al, 2017). Regarding liquid flow, there were studies on cleaning of filter cakes (Ruslim et al, 2009) and accumulation and removal of dirt in tubes (Yiantsios & Karabelas, 1994).…”

Section: Introductionmentioning

confidence: 99%

Analysis of interaction between mechanical force and chemical effect in cleaning phenomenon by probability density functional method

Oya-Hasegawa

Sato

Oya

2021

J Surfact & Detergents

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Probability density functional method was used to determine whether interaction between mechanical force and chemical action in cleaning was an additive effect, a synergistic effect, or an offsetting effect. As a soiled sample, iron (III) oxide soiled fabric, Sudan IV soiled fabric, commercially available artificial soiled fabric containing mixed stains, etc. were used and washed with a tergotometer. Mean value μ rl and standard deviation σ rl of the cleaning force distribution were calculated by using probability density functional method, and the interaction was judged using Δμ rl which is the difference between μ rl obtained under the two conditions. As results, additive effects between the mechanical force and the pH effect were confirmed in the cleaning of iron (III) oxide soiled fabric and commercially available artificially soiled fabric, and an additive effect between the mechanical force and the effect of the surfactant concentration was confirmed in the cleaning of Sudan IV soiled fabric. Therefore, it was presumed that an additive effect is often established between the mechanical action and the chemical action in cleaning, rather than a synergistic effect or an offsetting effect.

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Enhancing Staphylococcus aureus sterilization of stainless steel by the synergistic effect of surface structure and physical washing

Cited by 7 publications

References 56 publications

Structure-Element Surface Modification Strategy Enhances the Antibacterial Performance of Zr-BMGs

Structure-Element Surface Modification Strategy Enhances the Antibacterial Performance of Zr-BMGs

Antibacterial Performance of Zr-BMG, Stainless Steel, and Titanium Alloy with Laser-Induced Periodic Surface Structures

Analysis of interaction between mechanical force and chemical effect in cleaning phenomenon by probability density functional method

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