Inactivation of RNA and DNA viruses in water by copper and silver ions and their synergistic effect

Soliman, Mona Y.M.; Medema, Gertjan; Bonilla, Estrada; Brouns, Stan J. J.; Halem, D. van

doi:10.1016/j.wroa.2020.100077

Cited by 28 publications

(47 citation statements)

References 60 publications

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“…This discovery dates back to 1964, where Cu(II) was shown to inactivate bacteriophages [ 147 ]. Since then, many more types of viruses have revealed their susceptibility to copper (e.g., single- or double-stranded DNA or RNA enveloped or nonenveloped viruses), one of which being HIV [ 145 , 148 ]. Additionally, copper used in hospital settings has shown that bed rails made out of copper reduce the bacterial burden and healthcare-acquired infections because of its continuous antimicrobial activity [ 149 , 150 ].…”

Section: Copper As Antimicrobialmentioning

confidence: 99%

Advances in Understanding of the Copper Homeostasis in Pseudomonas aeruginosa

Hofmann

Hirsch

Ruthstein

2021

IJMS

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Thirty-five thousand people die as a result of more than 2.8 million antibiotic-resistant infections in the United States of America per year. Pseudomonas aeruginosa (P. aeruginosa) is classified a serious threat, the second-highest threat category of the U.S. Department of Health and Human Services. Among others, the World Health Organization (WHO) encourages the discovery and development of novel antibiotic classes with new targets and mechanisms of action without cross-resistance to existing classes. To find potential new target sites in pathogenic bacteria, such as P. aeruginosa, it is inevitable to fully understand the molecular mechanism of homeostasis, metabolism, regulation, growth, and resistances thereof. P. aeruginosa maintains a sophisticated copper defense cascade comprising three stages, resembling those of public safety organizations. These stages include copper scavenging, first responder, and second responder. Similar mechanisms are found in numerous pathogens. Here we compare the copper-dependent transcription regulators cueR and copRS of Escherichia coli (E. coli) and P. aeruginosa. Further, phylogenetic analysis and structural modelling of mexPQ-opmE reveal that this efflux pump is unlikely to be involved in the copper export of P. aeruginosa. Altogether, we present current understandings of the copper homeostasis in P. aeruginosa and potential new target sites for antimicrobial agents or a combinatorial drug regimen in the fight against multidrug resistant pathogens.

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Section: Copper As Antimicrobialmentioning

confidence: 99%

Advances in Understanding of the Copper Homeostasis in Pseudomonas aeruginosa

Hofmann

Hirsch

Ruthstein

2021

IJMS

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“…The morphology of the metal is one of the key factors affecting its ability to inactivate viruses [ 83 ]. Although the antibacterial performances of solid metallic materials have been confirmed, some metallic materials may not have a significant inactivation effect on viruses in solution [ 51 ].…”

Section: Antiviral Performances Of Different Metallic Materialsmentioning

confidence: 99%

“…Table S5, antiviral rate of metal elements with different valence states. Refs [ 20 , 52 , 65 , 73 , 76 , 77 , 81 , 82 , 83 , 85 , 88 , 95 , 111 , 138 , 179 , 180 , 181 , 182 , 183 , 184 , 185 , 186 , 187 , 188 , 189 , 190 , 191 , 192 , 193 ] were cited in the Supplementary Materials.…”

mentioning

confidence: 99%

Chemical Nature of Metals and Metal-Based Materials in Inactivation of Viruses

Tian

Yin

et al. 2022

Nanomaterials

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In response to the enormous threat to human survival and development caused by the large number of viruses, it is necessary to strengthen the defense against and elimination of viruses. Metallic materials have been used against viruses for thousands of years due to their broad-spectrum antiviral properties, wide sources and excellent physicochemical properties; in particular, metal nanoparticles have advanced biomedical research. However, researchers in different fields hold dissimilar views on the antiviral mechanisms, which has slowed down the antiviral application of metal nanoparticles. As such, this review begins with an exhaustive compilation of previously published work on the antiviral capacity of metal nanoparticles and other materials. Afterwards, the discussion is centered on the antiviral mechanisms of metal nanoparticles at the biological and physicochemical levels. Emphasis is placed on the fact that the strong reducibility of metal nanoparticles may be the main reason for their efficient inactivation of viruses. We hope that this review will benefit the promotion of metal nanoparticles in the antiviral field and expedite the construction of a barrier between humans and viruses.

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“…Coliphages ΦX174 and MS2 were chosen as surrogates for the naturally occurring pathogenic enteric virus in many previous studies [22][23][24]. While they are not pathogenic, they are similar to a typical enteric virus in size.…”

Section: Bacteriophages and Plaque Assaymentioning

confidence: 99%

Fate and Transportation of Viruses from Reclaimed Water into a Floatation System

Dou

Kou

Sun

et al. 2022

Water

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The fate and transport of viruses in floatation systems is considerably important for accurate determination of the safety of reusing reclaimed water in the flotation process. Herein, simulation experiments on the floatation, adsorption and desorption were performed to examine the effect of initial virus concentration, pH and floatation reagents on the adsorption of viruses ΦΧ174 and MS2 onto copper–molybdenum ores. The transport of viruses in the flotation systems was also investigated. The viruses in the reclaimed water were rapidly adsorbed onto the ore particles, suggesting that tailing wastewater can be safely reused for floatation. However, the adsorbed viruses in the concentrates, middlings and tailings may pose health risks at certain exposure levels. The transport of viruses was dominated by their attachment to ore particles, with most being inactivated or irreversibly adsorbed. The removal and adsorption rates decreased as the initial virus concentration increased, and the removal rate decreased as pH was increased from 7.5 to 9.5. In comparison with MS2, ΦΧ174 was removed more effectively. This suggested that electrostatic repulsion is an important mechanism because MS2 has a greater negative charge. The attachment of both ΦΧ174 and MS2 onto the mineral particles increased significantly in the presence of PJ053 and CaO.

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Inactivation of RNA and DNA viruses in water by copper and silver ions and their synergistic effect

Cited by 28 publications

References 60 publications

Advances in Understanding of the Copper Homeostasis in Pseudomonas aeruginosa

Advances in Understanding of the Copper Homeostasis in Pseudomonas aeruginosa

Chemical Nature of Metals and Metal-Based Materials in Inactivation of Viruses

Fate and Transportation of Viruses from Reclaimed Water into a Floatation System

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