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Comparing the Bacteriostatic Effects of Different Metal Nanoparticles Against Proteus vulgaris
Current Microbiology ( IF 2.6 ) Pub Date : 2020-05-28 , DOI: 10.1007/s00284-020-02029-9
Hamed Charkhian 1 , Amin Bodaqlouie 2 , Ehsan Soleimannezhadbari 1 , Lida Lotfollahi 3 , Nima Shaykh-Baygloo 4 , Ramin Hosseinzadeh 2 , Nesa Yousefi 5 , Meysam Khodayar 2
Affiliation  

For many years, researchers were looking for new antibacterial substances to deal with hospital infections and especially resistant infections. Nanoparticles attracted much attentions because of their very small size that increases the surface to capacity ratio and consequently increase chemical activity. In this study, the antibacterial effects of silver, copper oxide, nickel oxide, and titanium dioxide nanoparticles were studied on Proteus vulgaris, as a bacterium involved in the resistant hospital infections. The capability of nanoparticles to inhibit the growth of bacteria was assessed via 9 different methods including cylinder, disk, and well-diffusion, spot test, MBC, MIC, liquid inhibitory action test, diffusion, and assessing the effects of nanoparticles on a 24-h culture. Based on the results, copper oxide and silver nanoparticles had high antibacterial effects on P. vulgaris in both liquid and solid cultures, respectively. However, nickel oxide and titanium dioxide nanoparticles only had a weak effect on the inhibition of bacterial growth in the liquid culture. CuO and Ag NPs could release ions and consequently produce free radicals, disturb the equilibrium of electrons between electron donor groups and inactivate enzymes and DNA of the organisms. Moreover, they triggered holes in the bacterial membrane to disturb cellular ion equilibrium. So, they can be used to inhibit the growth of pathogens. Besides, further studies have shown that they could be used as a supplementary treatment and/or in combination with other drugs to cure infections caused by P. vulgaris.

中文翻译:

不同金属纳米粒子对普通变形杆菌的抑菌效果比较

多年来,研究人员一直在寻找新的抗菌物质来应对医院感染,尤其是耐药性感染。纳米粒子因其非常小的尺寸而引起了很多关注,这增加了表面积与容量的比率,从而增加了化学活性。在这项研究中,研究了银、氧化铜、氧化镍和二氧化钛纳米粒子对普通变形杆菌的抗菌作用,变形杆菌是一种参与耐药性医院感染的细菌。纳米粒子抑制细菌生长的能力通过 9 种不同的方法进行评估,包括圆柱体、圆盘和井扩散、点试验、MBC、MIC、液体抑制作用试验、扩散,以及评估纳米粒子对 24- h文化。根据结果​​,氧化铜和银纳米粒子分别对液体和固体培养物中的 P. vulgaris 具有很高的抗菌作用。然而,氧化镍和二氧化钛纳米颗粒对液体培养物中细菌生长的抑制作用很小。CuO和Ag NPs可以释放离子并因此产生自由基,扰乱电子供体基团之间的电子平衡并使生物体的酶和DNA失活。此外,它们在细菌膜上触发孔洞以扰乱细胞离子平衡。因此,它们可用于抑制病原体的生长。此外,进一步的研究表明,它们可以作为辅助治疗和/或与其他药物联合使用,以治愈普通假单胞菌引起的感染。分别。然而,氧化镍和二氧化钛纳米颗粒对液体培养物中细菌生长的抑制作用很小。CuO和Ag NPs可以释放离子并因此产生自由基,扰乱电子供体基团之间的电子平衡并使生物体的酶和DNA失活。此外,它们在细菌膜上触发孔洞以扰乱细胞离子平衡。因此,它们可用于抑制病原体的生长。此外,进一步的研究表明,它们可以作为辅助治疗和/或与其他药物联合使用,以治愈普通假单胞菌引起的感染。分别。然而,氧化镍和二氧化钛纳米颗粒对液体培养物中细菌生长的抑制作用很小。CuO和Ag NPs可以释放离子并因此产生自由基,扰乱电子供体基团之间的电子平衡并使生物体的酶和DNA失活。此外,它们在细菌膜上触发孔洞以扰乱细胞离子平衡。因此,它们可用于抑制病原体的生长。此外,进一步的研究表明,它们可作为辅助治疗和/或与其他药物联合使用,以治愈普通假单胞菌引起的感染。CuO和Ag NPs可以释放离子并因此产生自由基,扰乱电子供体基团之间的电子平衡并使生物体的酶和DNA失活。此外,它们在细菌膜上触发孔洞以扰乱细胞离子平衡。因此,它们可用于抑制病原体的生长。此外,进一步的研究表明,它们可以作为辅助治疗和/或与其他药物联合使用,以治愈普通假单胞菌引起的感染。CuO和Ag NPs可以释放离子并因此产生自由基,扰乱电子供体基团之间的电子平衡并使生物体的酶和DNA失活。此外,它们在细菌膜上触发孔洞以扰乱细胞离子平衡。因此,它们可用于抑制病原体的生长。此外,进一步的研究表明,它们可以作为辅助治疗和/或与其他药物联合使用,以治愈普通假单胞菌引起的感染。
更新日期:2020-05-28
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