Fabrication of Te and Te-Au Nanowires-Based Carbon Fiber Fabrics for Antibacterial Applications

Chou, Ting-Mao; Ke, Yi-Yun; Tsao, Yu-Hsiang; Li, Yingchun; Lin, Zong‐Hong

doi:10.3390/ijerph13020202

Cited by 7 publications

(6 citation statements)

References 27 publications

(32 reference statements)

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“…The microscopic examination was performed on the basis of studies by Chou et al and Marchesini et al [61,62] with modifications. The preparations were examined under the Olympus BX51 microscope (Olympus Optical, Tokyo, Japan) using a ×10 lens with a numerical aperture of 0.3.…”

Section: Methodsmentioning

confidence: 99%

In Vitro Activity of 3-Bromopyruvate, an Anticancer Compound, Against Antibiotic-Susceptible and Antibiotic-Resistant Helicobacter pylori Strains

Krzyżek

Franiczek

Krzyżanowska

et al. 2019

Cancers

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Helicobacter pylori (H. pylori) is a bacterium capable of inducing chronic active gastritis, which in some people, develops into gastric cancers. One of the substances that may be useful in the eradication of this microorganism is 3-Bromopyruvate (3-BP), an anticancer compound with antimicrobial properties. The aim of this article was to determine the activity of 3-BP against antibiotic-susceptible and antibiotic-resistant H. pylori strains. The antimicrobial activity was determined using a disk-diffusion method, broth microdilution method, time-killing assay, and checkerboard assay. The research was extended by observations using light, fluorescence, and scanning electron microscopy. The growth inhibition zones produced by 2 mg/disk with 3-BP counted for 16–32.5 mm. The minimal inhibitory concentrations (MICs) ranged from 32 to 128 μg/mL, while the minimal bactericidal concentrations (MBCs) for all tested strains had values of 128 μg/mL. The time-killing assay demonstrated the concentration-dependent and time-dependent bactericidal activity of 3-BP. The decrease in culturability below the detection threshold (<100 CFU/mL) was demonstrated after 6 h, 4 h, and 2 h of incubation for MIC, 2× MIC, and 4× MIC, respectively. Bacteria treated with 3-BP had a several times reduced mean green/red fluorescence ratio compared to the control samples, suggesting bactericidal activity, which was independent from an induction of coccoid forms. The checkerboard assay showed the existence of a synergistic/additive interaction of 3-BP with amoxicillin, tetracycline, and clarithromycin. Based on the presented results, it is suggested that 3-BP may be an interesting anti-H. pylori compound.

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Section: Methodsmentioning

confidence: 99%

In Vitro Activity of 3-Bromopyruvate, an Anticancer Compound, Against Antibiotic-Susceptible and Antibiotic-Resistant Helicobacter pylori Strains

Krzyżek

Franiczek

Krzyżanowska

et al. 2019

Cancers

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“…There are only a few reports on their antibacterial properties against Escherichia coli and Staphylococcus aureus showing much promise, using TeNWs nanowires made from the fungus Aspergillus welwitschiae 61 and a combination of Te and Au nanowires over a carbon surface using a chemical approach with hydrazine. 62 Low cytotoxicity on mammalian epithelial cells was reported for the latter.…”

Section: Introductionmentioning

confidence: 99%

<p>Comparison of cytocompatibility and anticancer properties of traditional and green chemistry-synthesized tellurium nanowires</p>

Vernet-Crua¹,

David²,

Zhang³

et al. 2019

IJN

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Background: Traditional physicochemical approaches for the synthesis of compounds, drugs, and nanostructures developed as potential solutions for antimicrobial resistance or against cancer treatment are, for the most part, facile and straightforward. Nevertheless, these approaches have several limitations, such as the use of toxic chemicals and production of toxic by-products with limited biocompatibility. Therefore, new methods are needed to address these limitations, and green chemistry offers a suitable and novel answer, with the safe and environmentally friendly design, manufacturing, and use of minimally toxic chemicals. Green chemistry approaches are especially useful for the generation of metallic nanoparticles or nanometric structures that can effectively and efficiently address health care concerns. Objective: Here, tellurium (Te) nanowires were synthesized using a novel green chemistry approach, and their structures and cytocompatibility were evaluated. Method: An easy and straightforward hydrothermal method was employed, and the Te nanowires were characterized using transmission electron microscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, Fourier-transform infrared spectroscopy, X-ray powder diffraction, X-ray photoelectron spectroscopy, and optical microscopy for morphology, size, and chemistry. Cytotoxicity tests were performed with human dermal fibroblasts and human melanoma cells (to assess anticancer properties). The results showed that a treatment with Te nanowires at concentrations between 5 and 100 μg/mL improved the proliferation of healthy cells and decreased cancerous cell growth over a 5-day period. Most importantly, the green chemistry-synthesized Te nanowires outperformed those produced by traditional synthetic chemical methods. Conclusion: This study suggests that green chemistry approaches for producing Te nanostructures may not only reduce adverse environmental effects resulting from traditional synthetic chemistry methods, but also be more effective in numerous health care applications.

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“…In addition, the antibacterial activities of Te nanoparticles are possibly related to the formation of ROS [ 35 , [52] , [53] , [54] ]. A high ROS level can increase oxidative stress in cells, which can damage both the cell membranes and the proteins, then cause bacterial death.…”

Section: Resultsmentioning

confidence: 99%

Biocompatible tellurium nanoneedles with long-term stable antibacterial activity for accelerated wound healing

Huang

Feng

et al. 2022

Materials Today Bio

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Fabrication of Te and Te-Au Nanowires-Based Carbon Fiber Fabrics for Antibacterial Applications

Cited by 7 publications

References 27 publications

In Vitro Activity of 3-Bromopyruvate, an Anticancer Compound, Against Antibiotic-Susceptible and Antibiotic-Resistant Helicobacter pylori Strains

In Vitro Activity of 3-Bromopyruvate, an Anticancer Compound, Against Antibiotic-Susceptible and Antibiotic-Resistant Helicobacter pylori Strains

<p>Comparison of cytocompatibility and anticancer properties of traditional and green chemistry-synthesized tellurium nanowires</p>

Biocompatible tellurium nanoneedles with long-term stable antibacterial activity for accelerated wound healing

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