Antibacterial Metal Oxide Nanoparticles: Challenges in Interpreting the Literature.

Antibacterial Metal Oxide Nanoparticles: Challenges in Interpreting the Literature.
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DOI:
10.2174/1381612824666180219130659
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发表时间:
2018
影响因子:
3.1
通讯作者:
VanEpps JS
VanEpps JS
中科院分区:
医学4区
文献类型:
--
作者:
Kadiyala U;Kotov NA;VanEpps JS

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已知金属氧化物纳米颗粒(MO-NP)有效地抑制多种革兰氏阳性和革兰氏阴性细菌的生长。它们已成为挑战日益严重的全球抗菌素耐药性问题的有希望的候选者。然而,由于NP制备和测试方法的变化,全面了解其作用机制并确定未来临床翻译的最有前途的NP材料仍然是一个重大挑战。随着各种类型的MO-NP的快速发展,需要一种稳健的、标准化的体外评估方案来评估这些NP的抗菌效力和效率。计算与每个细菌细胞积极相互作用的NP的数量对于评估毒性的剂量反应至关重要。在这里,我们讨论的方法,以评估MO-NPs的抗菌效率,重点是在这些试验中的NP相关的问题。我们还强调了实验变异性的来源,包括NP制备,初始细菌浓度,测试的细菌菌株,培养微环境和报告的剂量。
Metal oxide nanoparticles (MO-NPs)are known to effectively inhibit the growth of a wide range of Gram-positive and Gram-negative bacteria. They have emerged as promising candidates to challenge the rising global issue of antimicrobial resistance. However, a comprehensive understanding of their mechanism of action and identifying the most promising NP materials for future clinical translation remain a major challenge due to variations in NP preparation and testing methods. With various types of MO-NPs being rapidly developed, a robust, standardized, in vitro assessment protocol for evaluating the antibacterial potency and efficiency of these NPs is needed. Calculating the number of NPs that actively interact with each bacterial cell is critical for assessing the dose response for toxicity. Here we discuss methods to evaluate MO-NPs antibacterial efficiency with focus on issues related to NPs in these assays. We also highlight sources of experimental variability including NP preparation, initial bacterial concentration, bacterial strains tested, culture microenvironment, and reported dose.
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