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Carolina Rosai Mendes, Guilherme Dilarri, Carolina Froes Forsan, Vinícius de Moraes Ruy Sapata, Paulo Renato Matos Lopes, Peterson Bueno de Moraes, Renato Nallin Montagnolli, Henrique Ferreira, Edério Dino Bidóia
Zinc oxide nanoparticles (ZnO NPs) are one of the most widely used nanoparticulate materials due to their antimicrobial properties, but their main mechanism of action (MOA) has not been fully elucidated. The study characterized ZnO NPs using X-ray diffraction, FT-IR spectroscopy and scanning electron microscopy. Antimicrobial activity of clinically bacteria Escherichia coli, Staphylococcus aureus, Bacillus subtilis and Pseudomonas aeruginosa was evaluated by REMA after exposure to the ZnO NP at concentrations from 0.2 to 1.4 mM. Sensitivity was achieved at 0.6 mM for the Gram-negatives and 1.0 mM for Gram-positives cells. The effect of ZnO NPs on the membrane integrity and in the interference of cell division was investigated by its effect on the divisional ring, through fluorescence microscopy assays using B. subtilis (amy::pspac-ftsZ-gfpmut1) expressing FtsZ-GFP. Results showed that ZnO NPs did not interfere with the assembly of the divisional Z-ring. However, 70% of the cells showed damage in the cytoplasmic membrane after 15 min of exposure to the ZnO NPs. Electrostatic forces, production of Zn2+ ions, generation of reactive oxygen species were described as pathways of bactericidal action by ZnO. Thus, understanding bactericidal MOA can produce predictive models to prevent bacterial resistance and lead to further research.
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Mendes, C. R., Dilarri, G., Forsan, C. F., Sapata, V. D. M. R., Lopes, P. R. M., Moraes, P. B. D., Montagnolli, R. N., Ferreira, H., & Bidóia, E. D. (2022). Antibacterial action and target mechanisms of zinc oxide nanoparticles against bacterial pathogens. Scientific Reports, 12(1), 2658. https://doi.org/10.1038/s41598-022-06657-y
Mendes, Carolina Rosai, et al. "Antibacterial action and target mechanisms of zinc oxide nanoparticles against bacterial pathogens." Scientific Reports, vol. 12, no. 1, 2022, pp. 2658, https://doi.org/10.1038/s41598-022-06657-y.
Mendes, Carolina Rosai, Guilherme Dilarri, Carolina Froes Forsan, Vinícius de Moraes Ruy Sapata, Paulo Renato Matos Lopes, Peterson Bueno de Moraes, Renato Nallin Montagnolli, Henrique Ferreira, and Edério Dino Bidóia. "Antibacterial action and target mechanisms of zinc oxide nanoparticles against bacterial pathogens." Scientific Reports 12, no. 1 (2022): 2658. https://doi.org/10.1038/s41598-022-06657-y.
Mendes C. R., Dilarri G., Forsan C. F. [и др.] Antibacterial action and target mechanisms of zinc oxide nanoparticles against bacterial pathogens // Scientific Reports. — 2022. — Vol. 12, № 1. — P. 2658. — URL: https://doi.org/10.1038/s41598-022-06657-y
@article{mendes2022antibacterial,
title = {{Antibacterial action and target mechanisms of zinc oxide nanoparticles against bacterial pathogens}},
author = {Carolina Rosai Mendes and Guilherme Dilarri and Carolina Froes Forsan and Vinícius de Moraes Ruy Sapata and Paulo Renato Matos Lopes and Peterson Bueno de Moraes and Renato Nallin Montagnolli and Henrique Ferreira and Edério Dino Bidóia},
journal = {Scientific Reports},
year = {2022},
volume = {12},
number = {1},
pages = {2658},
doi = {10.1038/s41598-022-06657-y},
url = {https://doi.org/10.1038/s41598-022-06657-y}
}TY - JOUR AU - Mendes, Carolina Rosai AU - Dilarri, Guilherme AU - Forsan, Carolina Froes AU - Sapata, Vinícius de Moraes Ruy AU - Lopes, Paulo Renato Matos AU - Moraes, Peterson Bueno de AU - Montagnolli, Renato Nallin AU - Ferreira, Henrique AU - Bidóia, Edério Dino TI - Antibacterial action and target mechanisms of zinc oxide nanoparticles against bacterial pathogens JO - Scientific Reports VL - 12 IS - 1 SP - 2658 PY - 2022 DA - 2022/02/16 DO - 10.1038/s41598-022-06657-y UR - https://doi.org/10.1038/s41598-022-06657-y ER -
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