Vet World Vol.17 August-2024 Article - 26
Research Article
Veterinary World, 17(8): 1880-1888
https://doi.org/10.14202/vetworld.2024.1880-1888
Morphological changes and luminescence of Escherichia coli in contact with Mn2O3 and Co3O4 ultrafine particles as components of a mineral feed additive
2. Federal State Budgetary Educational Institution of Higher Education Orenburg State University, Orenburg, Russia.
Background and Aim: The spread of antibiotic resistance and mineral depletion in soils encourages an intensive search for highly effective and environmentally safe bactericidal agents and sources of macro- and micro-elements. The most profitable solution would combine both the described tasks. Ultrafine particles (UFPs) have this functionality. Thus, this study aimed to analyze the bioluminescence and external morphological changes of Escherichia coli cells after contact with Mn2O3 and Co3O4 UFPs at effective concentrations (ECs).
Materials and Methods: The antibiotic properties of the studied samples were determined on a multifunctional microplate analyzer TECAN Infinite F200 (Tecan Austria GmbH, Austria) by fixing the luminescence value of the bacterial strain E. coli K12 TG11 (Ecolum, NVO Immunotech Closed Joint Stock Company, Russia). Morphological changes in the cell structure were evaluated using a Certus Standard EG-5000 atomic force microscope equipped with NSPEC software (Nano Scan Technology LLC, Russia).
Results: The obtained results indicate high bactericidal properties of Co3O4 and Mn2O3 UFPs (EC50 at 3.1 × 10−5 and 1.9 × 10−3 mol/L, respectively) due to the degradation of the cell wall, pathological increase in size, disruption of septic processes, and loss of cytoplasmic contents.
Conclusion: The prospects for the environmentally safe use of ultrafine materials are outlined. The limits of the dosages of Co3O4 and Mn2O3 UFPs recommended for further study in vitro and in vivo in feeding farm animals are established (no more than 4.9 × 10−4 mol/L for Mn2O3 UFPs and 1.5 × 10−5 mol/L for Co3O4 UFPs). The limitation of the work is the lack of experiments to determine the mechanisms of the toxic effect of UFP on bacteria, protein structures, and DNA and oxidative stress, which is planned to be performed in the future together with in situ and in vivo studies on animals.
Keywords: atomic force microscopy, cell wall, cobalt, Escherichia coli, luminescence, manganese, nanotechnology, ultrafine particles.
How to cite this article: Shoshin DE, Sizova EA, and Kamirova AM (2024) Morphological changes and luminescence of Escherichia coli in contact with Mn2O3 and Co3O4 ultrafine particles as components of a mineral feed additive, Veterinary World, 17(8): 1880-1888.
Received: 2024-03-18 Accepted: 2024-07-22 Published online: 2024-08-24
Corresponding author: E-mail:
DOI: 10.14202/vetworld.2024.1880-1888
Copyright: Shoshin, et al. This article is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/ by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http:// creativecommons.org/ publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
