Effects of Zinc Oxide Nanoparticles Synthesized Using Aspergillus niger on Carbapenem-Resistant Klebsiella pneumonia In Vitro and In Vivo

• Published in: Frontiers in cellular and infection microbiology Vol. 11; p. 748739
• Main Authors: Rasha, Elsayim, Alkhulaifi, Manal M, AlOthman, Monerah, Khalid, Ibrahim, Doaa, Elnagar, Alaa, Khatab, Awad, Manal A, Abdalla, Mohnad
• Format: Journal Article
• Language: English
• Published: Switzerland Frontiers Media S.A 16.11.2021
• Subjects: Animals; Anti-Bacterial Agents - pharmacology; antimicrobial resistance; Aspergillus niger; biological synthesis; carbapenem-resistant Klebsiella pneumoniae (KPC); Carbapenems - pharmacology; Cellular and Infection Microbiology; Klebsiella pneumoniae; Metal Nanoparticles; Microbial Sensitivity Tests; Nanoparticles; Plant Extracts; Pneumonia; Rats; Spectroscopy, Fourier Transform Infrared; wound recovery; Zinc Oxide - pharmacology; zinc oxide nanoparticle; wound recovery; biological synthesis; Aspergillus niger; antimicrobial resistance; zinc oxide nanoparticle; carbapenem-resistant Klebsiella pneumoniae (KPC)
• ISSN: 2235-2988; 2235-2988
• DOI: 10.3389/fcimb.2021.748739

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.