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首页> 外文期刊>Journal of industrial and engineering chemistry >Highly bioactive and low cytotoxic Si-based NiOOH nanoflowers targeted against various bacteria, including MRSA, and their potential antibacterial mechanism
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Highly bioactive and low cytotoxic Si-based NiOOH nanoflowers targeted against various bacteria, including MRSA, and their potential antibacterial mechanism

机译:高度生物活性和低细胞毒性Si基NiOOH纳米圈靶向各种细菌,包括MRSA,以及它们的潜在抗菌机制

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With the emergence of new drug-resistant microorganisms, the development of effective antimicrobial agents is urgently required. Core-shell-structured nanomaterials have received considerable attention as antibacterial agents. We prepared a bioactive core-shell-structured silicon-based NiOOH nanoflower (Si@NiOOH) targeted against various bacteria using a modified chemical bath deposition method. Further, we investigated its potential antibacterial mechanism by evaluating electrochemical properties in a redox reaction with ascorbic acid, measuring metal ion release, and analyzing the surface area. The bactericidal rate of Si@NiOOH at 200 mg/mL towards Pseudomonas aeruginosa, Klebsiella pneumoniae, and methicillin-resistant Staphylococcus aureus was as high as 99.9%. Si@NiOOH maintained its original morphology after killing the bacteria and exhibited negligible cytotoxicity towards mouse embryonic fibroblasts. The excellent antibacterial activities of Si@NiOOH are possibly derived from its high surface area, providing a wide active site attached to the cell wall, and the high oxidative potency of the Ni(III) cations existing on its surface. The high antibacterial activity and low cytotoxicity of the nanoflower make it a promising tool for promoting wound healing and for use with medical devices and implants. (C) 2021 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
机译:随着新型耐药微生物的出现,迫切需要开发有效的抗菌药物。核壳结构纳米材料作为抗菌剂受到了广泛关注。我们制备了具有生物活性的核壳结构硅基NiOOH纳米花(Si@NiOOH)使用改进的化学浴沉积方法针对各种细菌。此外,我们通过评估与抗坏血酸的氧化还原反应中的电化学性质、测量金属离子释放和分析表面积,研究了其潜在的抗菌机理。细菌的杀菌率Si@NiOOH对铜绿假单胞菌、肺炎克雷伯菌和耐甲氧西林金黄色葡萄球菌的浓度为200mg/mL时高达99.9%。Si@NiOOH杀灭细菌后保持其原有形态,对小鼠胚胎成纤维细胞的细胞毒性可忽略不计。其优异的抗菌活性Si@NiOOH可能源于其高比表面积,提供了附着在细胞壁上的广泛活性位点,以及其表面存在的Ni(III)阳离子的高氧化能力。纳米花的高抗菌活性和低细胞毒性使其成为促进伤口愈合以及用于医疗设备和植入物的有希望的工具。(2021)韩国工业和工程化学学会。由爱思唯尔B.V.出版。版权所有。

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