Role of oxidative stress in inactivation of Escherichia coli BW25113 by nanoscale zero-valent iron

Chaithawiwat, Krittanut; Vangnai, Alisa S.; McEvoy, John; Pruess, Birgit; Krajangpan, Sita; Khan, Eakalak

doi:10.1016/j.scitotenv.2016.02.191

Cited by 33 publications

(19 citation statements)

References 41 publications

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“…34 Furthermore, a study conducted by Chaithawiwat et al even showed that nZVI particles performed roles in the expression of genes encoding antioxidative enzymes. 35 Such nanoparticles induced modification may change the antioxidative responses of plants exposed to heavy metals. To our knowledge, very few studies have investigated the impacts of nZVI on the antioxidant defense systems in plants under Cd-stress.…”

Section: ■ Introductionmentioning

confidence: 99%

Stabilized Nanoscale Zerovalent Iron Mediated Cadmium Accumulation and Oxidative Damage of Boehmeria nivea (L.) Gaudich Cultivated in Cadmium Contaminated Sediments

Gong

Huang

Liu

et al. 2017

Environ. Sci. Technol.

279

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Nanoparticles can be absorbed by plants, but their impacts on phytoremediation are not yet well understood. This study was carried out to determine the impacts of starch stabilized nanoscale zerovalent iron (S-nZVI) on the cadmium (Cd) accumulation and the oxidative stress in Boehmeria nivea (L.) Gaudich (ramie). Plants were cultivated in Cd-contaminated sediments amended with S-nZVI at 100, 500, and 1000 mg/kg, respectively. Results showed that S-nZVI promoted Cd accumulation in ramie seedlings. The subcellular distribution result showed that Cd content in cell wall of plants reduced, and its concentration in cell organelle and soluble fractions increased at S-nZVI treatments, indicating the promotion of Cd entering plant cells by S-nZVI. In addition, the 100 mg/kg S-nZVI alleviated the oxidative damage to ramie under Cd-stress, while 500 and 1000 mg/kg S-nZVI inhibited plant growth and aggravated the oxidative damage to plants. These findings demonstrate that nanoparticles at low concentration can improve the efficiency of phytoremediation. This study herein develops a promising novel technique by the combined use of nanotechnology and phytoremediation in the remediation of heavy metal contaminated sites.

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Section: ■ Introductionmentioning

confidence: 99%

Stabilized Nanoscale Zerovalent Iron Mediated Cadmium Accumulation and Oxidative Damage of Boehmeria nivea (L.) Gaudich Cultivated in Cadmium Contaminated Sediments

Gong

Huang

Liu

et al. 2017

Environ. Sci. Technol.

279

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“…Although the nanotoxicological knowledge of Fe 0 NPs is growing, [22][23][24][25] toxicity-based-toxicokinetic (TBTK)/toxicodynamic (TD) assessments describing the fate and behavior of Fe 0 NPs in living organisms are not well understood and remain a substantial challenge. TBTK/TD modeling is a robust mechanistic approach enabling integration of toxic effects on multiple endpoints over time.…”

Section: Introductionmentioning

confidence: 99%

Toxicity-based toxicokinetic/toxicodynamic assessment of bioaccumulation and nanotoxicity of zerovalent iron nanoparticles in <em>Caenorhabditis elegans</em>

Yang¹,

Lin²,

Liao³

2017

IJN

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Elucidating the relationships between the toxicity-based-toxicokinetic (TBTK)/toxicodynamic (TD) properties of engineered nanomaterials and their nanotoxicity is crucial for human health-risk analysis. Zerovalent iron (Fe 0 ) nanoparticles (NPs) are one of the most prominent NPs applied in remediating contaminated soils and groundwater. However, there are concerns that Fe 0 NP application contributes to long-term environmental and human health impacts. The nematode Caenorhabditis elegans is a surrogate in vivo model that has been successfully applied to assess the potential nanotoxicity of these nanomaterials. Here we present a TBTK/TD approach to appraise bioaccumulation and nanotoxicity of Fe 0 NPs in C. elegans . Built on a present C. elegans bioassay with estimated TBTK/TD parameters, we found that average bioconcentration factors in C. elegans exposed to waterborne and food-borne Fe 0 NPs were ~50 and ~5×10 −3 , respectively, whereas 10% inhibition concentrations for fertility, locomotion, and development, were 1.26 (95% CI 0.19–5.2), 3.84 (0.38–42), and 6.78 (2.58–21) μg·g −1 , respectively, implicating that fertility is the most sensitive endpoint in C. elegans . Our results also showed that biomagnification effects were not observed in waterborne or food-borne Fe 0 NP-exposed worms. We suggest that the TBTK/TD assessment for predicting NP-induced toxicity at different concentrations and conditions in C. elegans could enable rapid selection of nanomaterials that are more likely to be nontoxic in larger animals. We conclude that the use of the TBTK/TD scheme manipulating C. elegans could be used for rapid evaluation of in vivo toxicity of NPs or for drug screening in the field of nanomedicine.

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“…Gram negative bacteria were more susceptible to nZVI toxicity than Gram positive bacteria (Chaithawiwat et al, 2016a). Chaithawiwat et al (2016b) reported that the rpoS gene was mainly responsible for resisting nZVI toxicity at cellular level. Unlike E. coli, Pseudomonas putida F1 exhibited high tolerance to nZVI at a 0.1 g/L dose by virtue of the rigid cell membrane of the bacterium (Kotchaplai et al, 2017).…”

Section: Environmental Risk Of Nanomaterialsmentioning

confidence: 99%

Nanomaterials for sustainable remediation of chemical contaminants in water and soil

Mukhopadhyay

Sarkar

Khan

et al. 2021

Critical Reviews in Environmental Science and Technology

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Rapid growth in population, industry, urbanization and intensive agriculture have led to soil and water pollution by various contaminants. Nanoremediation has become one of the most successful emerging technologies for cleaning up soil and water contaminants due to the high reactivity of nanomaterials (NMs). Numerous publications are available on the use of NMs for removing contaminants, and the efficiencies are often improved by modifications of NMs with polymers, clay minerals, zeolites, activated carbon, and biochar. This paper critically reviews the current state-of-the-art NMs used for sustainable soil and water remediation, focusing on their applications in novel remedial approaches, such as adsorption/filtration, catalysis, photodegradation, electro-nanoremediation, and nano-bioremediation. Insights into process performances, modes of deployment, potential environmental risks and their management, and the consequent societal and economic implications of using NMs for soil and water remediation indicate that widespread acceptance of nanoremediation technologies requires not only a substantial advancement of the underpinning science and engineering aspects themselves, but also practical demonstrations of the effectiveness of already recognized approaches at real world in-situ conditions. New research involving green nanotechnology, nano-bioremediation, electronanoremediation, risk assessment of NMs, and outreach activities are needed to achieve successful applications of nanoremediation at regional and global scales.

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Role of oxidative stress in inactivation of Escherichia coli BW25113 by nanoscale zero-valent iron

Cited by 33 publications

References 41 publications

Stabilized Nanoscale Zerovalent Iron Mediated Cadmium Accumulation and Oxidative Damage of Boehmeria nivea (L.) Gaudich Cultivated in Cadmium Contaminated Sediments

Stabilized Nanoscale Zerovalent Iron Mediated Cadmium Accumulation and Oxidative Damage of Boehmeria nivea (L.) Gaudich Cultivated in Cadmium Contaminated Sediments

Toxicity-based toxicokinetic/toxicodynamic assessment of bioaccumulation and nanotoxicity of zerovalent iron nanoparticles in <em>Caenorhabditis elegans</em>

Nanomaterials for sustainable remediation of chemical contaminants in water and soil

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