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简易一锅法低温合成的银-氧化锌纳米颗粒及其对耐甲氧西林临床分离株的活性

Easy One-Pot Low-Temperature Synthesized Ag-ZnO Nanoparticles and Their Activity Against Clinical Isolates of Methicillin-Resistant .

作者信息

Naskar Atanu, Lee Sohee, Kim Kwang-Sun

机构信息

Laboratory of RNA Biochemistry & Superbacteria Research, Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan, South Korea.

出版信息

Front Bioeng Biotechnol. 2020 Mar 19;8:216. doi: 10.3389/fbioe.2020.00216. eCollection 2020.

Abstract

Antimicrobial resistance (AMR) is widely acknowledged as a global health problem, yet the available solutions to this problem are limited. Nanomaterials can be used as potential nanoweapons to fight against this problem. In this study, we report an easy one-pot low-temperature synthesis of Ag-ZnO nanoparticles (AZO NPs) and their targeted antibacterial activity against methicillin-resistant (MRSA) strains. The physical properties of the samples were characterized by X-ray diffractometry (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). Furthermore, minimum inhibitory concentration (MIC), zone of inhibition (ZOI), and scanning electron microscopy (SEM) images for morphological characterization of bacteria were assessed to evaluate the antibacterial activity of AZO NPs against both Gram-negative [ () and () standard and AMR strains] and Gram-positive (, MRSA3, and MRSA6) bacteria. The AZO NPs showed comparatively better antibacterial activity against and MRSA strains than Gram-negative bacterial strains. This cost-effective and simple synthesis strategy can be used for the development of other metal oxide nanoparticles, and the synthesized nanomaterials can be potentially used to fight against MRSA.

摘要

抗菌耐药性(AMR)被广泛认为是一个全球性的健康问题,但针对这一问题的现有解决方案有限。纳米材料可作为对抗该问题的潜在纳米武器。在本研究中,我们报告了一种简便的一锅法低温合成银-氧化锌纳米颗粒(AZO NPs)及其对耐甲氧西林(MRSA)菌株的靶向抗菌活性。通过X射线衍射仪(XRD)、透射电子显微镜(TEM)和X射线光电子能谱(XPS)对样品的物理性质进行了表征。此外,还评估了最小抑菌浓度(MIC)、抑菌圈(ZOI)以及用于细菌形态表征的扫描电子显微镜(SEM)图像,以评价AZO NPs对革兰氏阴性菌[()和()标准菌株及AMR菌株]和革兰氏阳性菌(、MRSA3和MRSA6)的抗菌活性。与革兰氏阴性菌菌株相比,AZO NPs对和MRSA菌株表现出相对更好的抗菌活性。这种具有成本效益且简单的合成策略可用于开发其他金属氧化物纳米颗粒,并且合成的纳米材料有可能用于对抗MRSA。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/159c/7096348/44fc01b75911/fbioe-08-00216-g001.jpg

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