Impact of Ag Nanoparticle Exposure on <i>p,p′</i>-DDE Bioaccumulation by Cucurbita pepo (Zucchini) and Glycine max (Soybean)

Torre-Roche, Roberto De La; Hawthorne, Joseph; Musante, Craig; Xing, Baoshan; Newman, L.; Ma, Xingmao; White, Jason C.

doi:10.1021/es3041829

Cited by 98 publications

(45 citation statements)

References 39 publications

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“…Here we found that the combination of two distinct NPs at concentrations causing no or very limited cytotoxic effects when present alone led to a strong enhancement of toxicity. Potentiation phenomena have been described for a variety of chemicals in a number of systems (for instance studies of Smith et al (2013) in D. magna and Torre- Roche et al (2013) in C. pepo and G. max). However, few data are available on such effects after exposure to a mixture of NPs (Chen et al, 2008;Tang et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

“…A number of studies have addressed the possible modulation of the activity of ions or chemicals by NPs. For instance, Tan et al (2012) showed that TiO 2 NPs enhance the uptake and retention of zinc and cadmium in Daphnia magna, and Torre- Roche et al (2013) demonstrated that exposure of Cucurbita pepo (zucchini) and Glycine max (soybean) to silver nanoparticles (AgNPs) leads to a significant reduction in the uptake of p,p′-DDE. However, with some exceptions (Guo et al, 2009;Tang et al, 2013), little attention has been given to the effects of co-exposure to ZnONPs and CuNPs.…”

Section: Introductionmentioning

confidence: 99%

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The potentiation effect makes the difference: Non-toxic concentrations of ZnO nanoparticles enhance Cu nanoparticle toxicity in vitro

Fernández‐Cruz

Connolly

et al. 2015

Science of The Total Environment

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• ZnONPs at non-toxic concentrations increased the toxicity of CuNPs in vitro.• ZnONPs of larger size provoked a stronger synergistic effect with CuNPs.• The synergistic effect was attributed to the particle fraction of ZnONPs. Here we examined whether the addition of a non-toxic concentration (6.25 μg/mL) of zinc oxide nanoparticles (ZnONPs: 19, 35 and 57 nm, respectively) modulates the cytotoxicity of copper nanoparticles (CuNPs, 63 nm in size) in the human hepatoma cell line HepG2. The cytotoxic effect of CuNPs on HepG2 cells was markedly enhanced by the ZnONPs, the largest ZnONPs causing the highest increase in toxicity. However, CuNPs cytotoxicity was not affected by co-incubation with medium containing only zinc ions, indicating the increase in toxicity might be attributed to the particle form of ZnONPs. Transmission electron microscopy (TEM) revealed the presence of CuNPs and ZnONPs inside the cells co-exposed to both types of NP and outflow of cytoplasm through the damaged cell membrane. Inductively coupled plasma mass spectrometry (ICP-MS) determined an increase in the concentration of zinc and a decrease in that of copper in co-exposed cells. On the basis of these results, we propose that accumulation of large numbers of ZnONPs in the cells alters cellular membranes and the cytotoxicity of CuNPs is increased. a b s t r a c t a r t i c l e i n f o

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The potentiation effect makes the difference: Non-toxic concentrations of ZnO nanoparticles enhance Cu nanoparticle toxicity in vitro

Fernández‐Cruz

Connolly

et al. 2015

Science of The Total Environment

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“…Similarly, C 60 was found to increase the accumulation of dichlorodiphenyldichloroethylene (DDE; 30–65%) by several crop species when grown in vermiculite . Conversely, NP silver (Ag) coexposure generally suppressed DDE uptake (21–29%) by soybean grown in vermiculite; interestingly, the suppression was particle size–specific, with bulk Ag providing far less impact on pesticide accumulation . Similar conflicted data can be found in soil studies.…”

Section: Introductionmentioning

confidence: 66%

Nanoparticle silver coexposure reduces the accumulation of weathered persistent pesticides by earthworms

Mukherjee

Hawthorne

White

et al. 2017

Enviro Toxic and Chemistry

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Although the use of engineered nanomaterials continues to increase, how these materials interact with coexisting contaminants in the environment is largely unknown. The effect of silver (Ag) in bulk, ionic, and nanoparticle (NP; bare and polyvinyl pyrrolidone-coated) forms at 3 concentrations (0 mg/kg, 500 mg/kg, 1000 mg/kg, 2000 mg/kg; ion at 69 mg/kg, 138 mg/kg, 276 mg/kg) on the accumulation of field-weathered chlordane and dichlorodiphenyldichloroethylene + metabolites (DDX) by Eisenia fetida (earthworm) was investigated. Earthworm biomass and survival were unaffected by treatment. At the 500 mg/kg and 1000 mg/kg exposure levels, NP-exposed earthworms contained significantly greater Ag (194-245%) than did the bulk exposed organisms; NP size or coating had no impact on element content. Generally, exposure to Ag of any type or at any concentration significantly reduced pesticide accumulation, although reductions for DDX (35.1%; 8.9-47.0%) were more modest than those for chlordane (79.0%; 17.4-92.9%). For DDX, the reduction in pesticide accumulation was not significantly affected by Ag type or concentration. For chlordane, the 3 NP exposures suppressed chlordane accumulation significantly more than did bulk exposure; earthworms exposed to bulk Ag contained 1170 ng/g chlordane, but levels in the NP-exposed earthworms were 279 ng/g. At the 500 mg/kg exposure, the smallest coated NPs exerted the greatest suppression in chlordane accumulation; at the 2 higher concentrations, chlordane uptake was unaffected by NP size or coating. The findings show that in exposed earthworms Ag particle size does significantly impact accumulation of the element itself, as well as that of coexisting weathered pesticides. The implications of these findings with regard to NP exposure and risk are unknown but are the topic of current investigation. Environ Toxicol Chem 2017;36:1864-1871. © 2016 SETAC.

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“…For instance, C 60 significantly increased weathered chlordane uptake from soil by Lycopersicon esculentum or Glycine max whereas MWCNTs decreased chlordane and DDx accumulation in Cucurbita pepo, Zea mays, Lycopersicum sculentum, and Glycine max (De La Torre-Roche et al, 2012a;Kelsey and White, 2013). Nanoparticle Ag was found to decrease the p,p′-DDE content of Glycine max tissues more than bulk Ag (De La Torre-Roche et al, 2012b). Although pharmaceutical contaminants and heavy metals in soils are currently not extensively tested in co-contamination studies, it is likely the co-existence of ENMs would affect their bioavailability, posing an important food safety concern.…”

Section: Impact On Co-existing Contaminantsmentioning

confidence: 95%

Interactions between engineered nanomaterials and agricultural crops: implications for food safety

Deng

White

Xing

2014

J. Zhejiang Univ. Sci. A

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117

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Engineered nanomaterials (ENMs) are being discharged into the environment and to agricultural fields, with unknown impacts on crop species. In this paper, we review the literature on ENMs uptake, translocation/distribution, and generational transmission in various crop species, as well as potential material trophic transfer. Previous studies reveal that ENM-exposed crops exhibit adaptive processes in response to stress, including endocytosis/endosome activities, production of antioxidant enzymes, regulation of genes related to cell division/extension and membrane transport. Some agronomic traits of crops are compromised during the adaption response, including photosynthesis, fruit yields, nutritional quality and nitrogen fixation. Cultivation of crops in ENMs-contaminated environments has unknown implications for food safety and quality. Notably, mechanisms underlying ENMs phytotoxicity and bioavailability are unclear. Additional investigations focused on developing novel techniques for in vivo identification/characterization of ENMs are critically needed. Given the abundance of uncertainty in the literature, it is clear that more research is urgently needed in the area of ENMs-crop interactions; only then can one accurately assess exposure, risk, and overall implications for food safety and also enable guidance development for the sustainable implementation of nanotechnology in agriculture and food production/manufacturing.

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Impact of Ag Nanoparticle Exposure on p,p′-DDE Bioaccumulation by Cucurbita pepo (Zucchini) and Glycine max (Soybean)

Cited by 98 publications

References 39 publications

The potentiation effect makes the difference: Non-toxic concentrations of ZnO nanoparticles enhance Cu nanoparticle toxicity in vitro

The potentiation effect makes the difference: Non-toxic concentrations of ZnO nanoparticles enhance Cu nanoparticle toxicity in vitro

Nanoparticle silver coexposure reduces the accumulation of weathered persistent pesticides by earthworms

Interactions between engineered nanomaterials and agricultural crops: implications for food safety

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