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利用 合成的氧化锌纳米颗粒对耐碳青霉烯类抗生素的 和 的影响。

Effects of Zinc Oxide Nanoparticles Synthesized Using on Carbapenem-Resistant and .

机构信息

Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia.

Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia.

出版信息

Front Cell Infect Microbiol. 2021 Nov 16;11:748739. doi: 10.3389/fcimb.2021.748739. eCollection 2021.

Abstract

Currently, the mortality rate in Saudi Arabia's ICUs is increasing due to the spread of carbapenemase (KPC)-producing bacteria. This study was carried out to evaluate the ability of biologically synthesized zinc oxide nanoparticles (ZnO-NPs) using to overcome carbapenem-resistant (KPC) and . ZnO-NPs were synthesized a biological method and characterized using UV-Vis spectroscopy, Zetasizer and zeta potential analyses, x-ray diffraction spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscopy (SEM), and energy-dispersive x-ray spectroscopy (EDX). sensitivity of KPC to ZnO-NPs was identified using the well diffusion method. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) were determined by a macro-dilution method. The morphological alteration of KPC cells after ZnO-NPs treatment was observed by SEM. The susceptibility of KPC cells to ZnO-NPs ointment was evaluated using wound healing in experimental rats. The chemical characterization findings showed the formation, stability, shape, and size of the synthesized nanoparticles. The MIC and MBC were 0.7 and 1.8 mg/ml, respectively. The results displayed reduced inflammation and wound re-epithelialization of KPC-infected rats. These findings demonstrated that ZnO-NPs have great potential to be developed as antibacterial agents.

摘要

目前,由于碳青霉烯酶(KPC)产生菌的传播,沙特阿拉伯 ICU 的死亡率正在上升。本研究旨在评估使用生物合成的氧化锌纳米粒子(ZnO-NPs)来克服耐碳青霉烯的(KPC)和的能力。ZnO-NPs 通过生物方法合成,并使用紫外-可见分光光度法、Zetasizer 和 ζ 电位分析、X 射线衍射光谱、傅里叶变换红外光谱、扫描电子显微镜(SEM)和能谱(EDX)进行表征。使用井扩散法鉴定 KPC 对 ZnO-NPs 的敏感性。通过宏观稀释法确定最小抑菌浓度(MIC)和最小杀菌浓度(MBC)。通过 SEM 观察 ZnO-NPs 处理后 KPC 细胞的形态变化。使用实验大鼠的伤口愈合评估 KPC 细胞对 ZnO-NPs 软膏的敏感性。化学特性研究结果表明合成纳米粒子的形成、稳定性、形状和尺寸。MIC 和 MBC 分别为 0.7 和 1.8 mg/ml。结果显示,KPC 感染大鼠的炎症减轻,伤口再上皮化。这些发现表明 ZnO-NPs 具有很大的潜力可开发为抗菌剂。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/edb2/8635236/82479a8134a1/fcimb-11-748739-g001.jpg

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