Aging reduces the toxicity of pristine but not sulphidised silver nanoparticles to soil bacteria

Schultz, Carolin; Gray, Joanna; Verweij, Rudo A.; Busquets-Fité, Martí; Puntes, Víctor; Svendsen, Claus; Lahive, Elma; Matzke, Marianne

doi:10.1039/c8en00054a

Cited by 21 publications

(7 citation statements)

References 52 publications

(57 reference statements)

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“…For example, silver NPs released into sewage change to Ag 2 S, which is less toxic than pristine silver NP. [ 138 ] Organic matter, especially HA and fulvic acid, attach to the NP surface and reduce its toxicity against soil bacteria.…”

Section: Np Impacts On Bacterial Community In the Environmentmentioning

confidence: 99%

Nanotechnology for Targeted Detection and Removal of Bacteria: Opportunities and Challenges

et al. 2021

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The emergence of nanotechnology has created unprecedented hopes for addressing several unmet industrial and clinical issues, including the growing threat so-termed "antibiotic resistance" in medicine. Over the last decade, nanotechnologies have demonstrated promising applications in the identification, discrimination, and removal of a wide range of pathogens. Here, recent insights into the field of bacterial nanotechnology are examined that can substantially improve the fundamental understanding of nanoparticle and bacteria interactions. A wide range of developed nanotechnology-based approaches for bacterial detection and removal together with biofilm eradication are summarized. The challenging effects of nanotechnologies on beneficial bacteria in the human body and environment and the mechanisms of bacterial resistance to nanotherapeutics are also reviewed.

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Section: Np Impacts On Bacterial Community In the Environmentmentioning

confidence: 99%

Nanotechnology for Targeted Detection and Removal of Bacteria: Opportunities and Challenges

et al. 2021

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“…In the category of metal oxides, Pulido-Reyes et al showed that cerium oxide NPs coated with polyvinylpyrrolidone (PVP) significantly increased the formation of reactive oxygen species in exposed cells, indicating that oxidative stress is an important toxicity mechanism for NPs (Pulido-Reyes et al, 2019). Additionally, Schultz et al observed a similar behavior between nZVI and silver-based nanoparticles: aging transformations reduced the bactericidal effect of pristine and sulfidized nano-Ag in media with organic matter, although the release of cationic silver through dissolution could not account entirely for the observed toxicity (Schultz et al, 2018).…”

Section: Other Type Of Nanoparticlesmentioning

confidence: 99%

In situ nanoremediation of soils and groundwaters from the nanoparticle's standpoint: A review

Marcon

Oliveras

Puntes

2021

Science of The Total Environment

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Highlights Anthropogenic pollution has continuously increased since the industrial revolution.  Nanoparticles can provide solutions to in situ cleanup challenges.  Nano-objects are increasingly being deployed in the field since the 2000s.  Their use is not exempt of limitations (aggregation, human health risks). 5 Their slow development in Europe is also due to economic motives and regulatory issues.  Questions concerning toxicity and migration into the matrices need to be answered.Highlights (for review : 3 to 5 bullet points (maximum 85 characters including spaces per bullet point)

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“…A decrease in soil pH has been shown to increase toxicity or bioaccumulation of Ag, ZnO, TiO 2 nanoparticles to Eisenia fetida , C. elegans , soil microbial community composition, and carbon mineralization. [ 76–80 ] The ionic strength of exposure media also plays a role in NM uptake and toxicity. It was found to be positively correlated with increased Ag NM aggregation and dissolution which promoted toxicity to Escherichia coli , [ 81 ] however, the opposite was the case for TiO 2 where only aggregation was increased.…”

Section: Assessing How Transformations Impact On Bioaccumulation and mentioning

confidence: 99%

“…For example, a 24 h aging step in ISO medium in the presence of fulvic acid significantly decreased growth inhibition by Ag NMs in bacteria. [ 77 ] The observed decrease in toxicity was linked to passivation of the NM surfaces by the organic matter, since no differences in dissolution were found. Studies with D. magna have also included such an incubation step as a presaging reaction before toxicity testing.…”

Section: Assessing How Transformations Impact On Bioaccumulation and mentioning

confidence: 99%

Nanomaterial Transformations in the Environment: Effects of Changing Exposure Forms on Bioaccumulation and Toxicity

Spurgeon

Lahive

Schultz

2020

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In the environment, nanomaterials (NMs) are subject to chemical transformations, such as redox reactions, dissolution, coating degradation, and organic matter, protein, and macromolecule binding, and physical transformations including homo or heteroagglomeration. The combination of these reactions can result in NMs with differing characteristics progressing through a functional fate pathway that leads to the formation of transformed NM functional fate groups with shared properties. To establish the nature of such effects of transformation on NMs, four main types of studies are conducted: 1) chemical aging for transformation of pristine NMs; 2) manipulation of test media to change NM surface properties; 3) aging of pristine NMs water, sediment, or soil; 4) NM aging in waste streams and natural environments. From these studies a paradigm of aging effects on NM uptake and toxicity can be developed. Transformation, especially speciation changes, largely results in reduced potency. Further reactions at the surface resulting in processes, such as ecocorona formation and heteroagglomeration may additionally reduce NM potency. When NMs of differing potency transform and enter environments, common transformation reaction occurring in receiving system may act to reduce the variation in hazard between different initial NMs leading to similar actual hazard under realistic exposure conditions.

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Aging reduces the toxicity of pristine but not sulphidised silver nanoparticles to soil bacteria

Abstract: Aging of silver nanoparticles shows soluble silver driving toxicity in ISO medium, but not in media containing natural organic matter.

Cited by 21 publications

References 52 publications

Nanotechnology for Targeted Detection and Removal of Bacteria: Opportunities and Challenges

Nanotechnology for Targeted Detection and Removal of Bacteria: Opportunities and Challenges

In situ nanoremediation of soils and groundwaters from the nanoparticle's standpoint: A review

Nanomaterial Transformations in the Environment: Effects of Changing Exposure Forms on Bioaccumulation and Toxicity

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