Arrays of nano-structured surfaces to probe the adhesion and viability of bacteria

Komaromy, Andras Zsigmond; Li, Shuyan; Zhang, Hailong; Nicolau, Dan V.; Boysen, Reinhard I; Hearn, Milton T. W.

doi:10.1016/j.mee.2011.10.012

Cited by 13 publications

(4 citation statements)

References 10 publications

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“…Our results reveal that adhesion of S. aureus (0.6–1 μm) to the patterned surfaces showed that pillar (PL) and line (LN) microtopographic features in the range between 1–5 µm increased bacterial adhesion to not only to PS but also to PI and PET biomaterials compared with non‐patterned ones (Figure and Supplementary Figure S1). These results agree with previous investigations reporting that surface features in the range of bacterium size allowed for maximization of the bacteria–surface contact area, hence increasing cell attachment whereas surface with topographic features smaller than the diameter of bacterial cells display a small accessible surface area . In the former case, bacterial extracellular appendages such as flagella, pili, and fimbriae could assume the responsibility for the adhesion to the sub‐micrometer features .…”

Section: Discussionsupporting

confidence: 92%

Evaluation of Surface Microtopography Engineered by Direct Laser Interference for Bacterial Anti-Biofouling

et al. 2015

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Modification of the biomaterial surface topography is a promising strategy to prevent bacterial adhesion and biofilm formation. In this study, we use direct laser interference patterning (DLIP) to modify polystyrene surface topography at sub-micrometer scale. The results revealed that three-dimensional micrometer structures have a profound impact on bacterial adhesion. Thus, line- and pillar-like patterns enhanced S. aureus adhesion, whereas complex lamella microtopography reduced S. aureus adhesion in static and continuous flow culture conditions. Interestingly, lamella-like textured surfaces retained the capacity to inhibit S. aureus adhesion both when the surface is coated with human serum proteins and when the material is implanted subcutaneously in a foreign-body associated infection model.

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Section: Discussionsupporting

confidence: 92%

Evaluation of Surface Microtopography Engineered by Direct Laser Interference for Bacterial Anti-Biofouling

et al. 2015

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“…Cell viability and adhesion were found to be influenced by the surface topography of the microstructure array [10]. The struts of the BCP scaffold with HA/PLLA nanocomposites coating changed the surface topography and cells environment to influence the metabolic activity and proliferation of hBMSCs on BCP scaffolds, which was further supported by MTT analysis.…”

Section: Resultsmentioning

confidence: 66%

Hydroxyapatite/poly-l-lactide nanocomposites coating improves the adherence and proliferation of human bone mesenchymal stem cells on porous biphasic calcium phosphate scaffolds

et al. 2013

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“…Also, QCM was used as an extremely sensitive device for the inhibitory effect of biocides and monitoring the formation of biofilm. Komaromy et al (2012) successfully recruited e-beam lithography to make arrays with silicon or gold oxide nanostructures in the form of lines and dots of various sizes and with unusual spacing. To evaluate the propensity of microbial cells to adhere to these nanostructure arrays, these planar reference surfaces as well as new materials were incubated with suspensions of S. aureus and E. coli (Lai et al 2015).…”

Section: Recognition Of Bacterial Biofilm By Different Sensorsmentioning

confidence: 99%

New insights into the role of nanotechnology in microbial food safety

et al. 2020

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Today, the role of nanotechnology in human life is undeniable as a broad range of industries, particularly food and medicine sectors, have been dramatically influenced. Nanomaterials can contribute to food safety by forming new nano-sized ingredients with modified physicochemical characteristics. Nanotechnologies can inhibit the growth of food spoilage microorganisms by recruiting novel and unique agents that are involved in removal of microbes from foods or prevent adhesion of microbial cells to food surfaces. Hence, nanotechnology could be considered as a high-potential tool in food packaging, safety, and preservation. Moreover, the prevention of biofilm formation by disturbing the attachment of bacteria to the food surface is another useful nanotechnological approach. Recently, nanoparticle-based biosensors have been designed and developed to detect the food-borne pathogens and hazardous substances through complicated mechanisms. During the past half-century, many methods such as freeze-drying and spray drying have been employed for increasing the viability in food industries; however, the other novel approaches such as encapsulation methods have also been developed. Admittedly, some beneficial bacteria such as probiotics bring diverse benefits for human health if only they are in a sufficient number and viability in the food products and gastrointestinal tract (GI). Encapsulation of these valuable microbial strains by nanoparticles improves the survival of probiotics under harsh conditions such as extreme levels of temperature, pH, and salinity during the processing of food products and within the GIT tract. The survival and effectiveness of encapsulated microorganisms depends on different factors including function of cell wall components in bacteria and type of coating materials. This review aims to broadly explore the potential of different aspects of nanotechnology in food industry, especially for packaging, preservation, safety, and viability.

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Arrays of nano-structured surfaces to probe the adhesion and viability of bacteria

Cited by 13 publications

References 10 publications

Evaluation of Surface Microtopography Engineered by Direct Laser Interference for Bacterial Anti-Biofouling

Evaluation of Surface Microtopography Engineered by Direct Laser Interference for Bacterial Anti-Biofouling

Hydroxyapatite/poly-l-lactide nanocomposites coating improves the adherence and proliferation of human bone mesenchymal stem cells on porous biphasic calcium phosphate scaffolds

New insights into the role of nanotechnology in microbial food safety

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