Toxicity and bioaccumulation of sediment-associated silver nanoparticles in the estuarine polychaete, Nereis (Hediste) diversicolor

Research output: Contribution to journalArticle

Standard

Toxicity and bioaccumulation of sediment-associated silver nanoparticles in the estuarine polychaete, Nereis (Hediste) diversicolor. / Cong, Yi; Banta, Gary T.; Selck, Henriette; Berhanu, Deborah; Valsami-jones, Eugenia; Forbes, Valery E.

In: Aquatic Toxicology, Vol. 156, 11.2014, p. 106-115.

Research output: Contribution to journalArticle

Harvard

APA

Vancouver

Author

Cong, Yi ; Banta, Gary T. ; Selck, Henriette ; Berhanu, Deborah ; Valsami-jones, Eugenia ; Forbes, Valery E. / Toxicity and bioaccumulation of sediment-associated silver nanoparticles in the estuarine polychaete, Nereis (Hediste) diversicolor. In: Aquatic Toxicology. 2014 ; Vol. 156. pp. 106-115.

Bibtex

@article{10353776ae334b6fb8b0df385db04704,
title = "Toxicity and bioaccumulation of sediment-associated silver nanoparticles in the estuarine polychaete, Nereis (Hediste) diversicolor",
abstract = "In this study, the toxicities of sediment-associated silver added to sediment as commercially available silver nanoparticles (Ag NPs, 20 and 80 nm) and aqueous Ag (AgNO3) to the estuarine polychaete, Nereis (Hediste) diversicolor, were investigated for both individual and subcellular endpoints after 10 d of exposure. Both Ag NP types were characterized in parallel to the toxicity studies and found to be polydispersed and overlapping in size. Burrowing activity decreased (marginally) with increasing Ag concentration and depended on the form of Ag added to sediment. All worms accumulated Ag regardless of the form in which it was added to the sediment, and worm size (expressed as dry weight) was found to significantly affect bioaccumulation such that smaller worms accumulated more Ag per body weight than larger worms. Lysosomal membrane permeability (neutral red retention time, NRRT) and DNA damage (comet assay tail moment and tail DNA intensity {\%}) of Nereis coelomocytes increased in a concentration-dependent manner in all three Ag treatments. Ag NP treatments were more toxic than aqueous Ag for all toxicity endpoints, even though bioaccumulation did not differ significantly among Ag forms. No significant difference in toxicity was observed between the two Ag NP treatments which was attributed to their overlap in particle size.",
keywords = "Silver nanoparticles, Sediment exposure, Burrowing behavior, Ag body burden, Lysosomal membrane stability, DNA damage",
author = "Yi Cong and Banta, {Gary T.} and Henriette Selck and Deborah Berhanu and Eugenia Valsami-jones and Forbes, {Valery E.}",
year = "2014",
month = "11",
doi = "10.1016/j.aquatox.2014.08.001",
language = "English",
volume = "156",
pages = "106--115",
journal = "Aquatic Toxicology",
issn = "0166-445X",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Toxicity and bioaccumulation of sediment-associated silver nanoparticles in the estuarine polychaete, Nereis (Hediste) diversicolor

AU - Cong, Yi

AU - Banta, Gary T.

AU - Selck, Henriette

AU - Berhanu, Deborah

AU - Valsami-jones, Eugenia

AU - Forbes, Valery E.

PY - 2014/11

Y1 - 2014/11

N2 - In this study, the toxicities of sediment-associated silver added to sediment as commercially available silver nanoparticles (Ag NPs, 20 and 80 nm) and aqueous Ag (AgNO3) to the estuarine polychaete, Nereis (Hediste) diversicolor, were investigated for both individual and subcellular endpoints after 10 d of exposure. Both Ag NP types were characterized in parallel to the toxicity studies and found to be polydispersed and overlapping in size. Burrowing activity decreased (marginally) with increasing Ag concentration and depended on the form of Ag added to sediment. All worms accumulated Ag regardless of the form in which it was added to the sediment, and worm size (expressed as dry weight) was found to significantly affect bioaccumulation such that smaller worms accumulated more Ag per body weight than larger worms. Lysosomal membrane permeability (neutral red retention time, NRRT) and DNA damage (comet assay tail moment and tail DNA intensity %) of Nereis coelomocytes increased in a concentration-dependent manner in all three Ag treatments. Ag NP treatments were more toxic than aqueous Ag for all toxicity endpoints, even though bioaccumulation did not differ significantly among Ag forms. No significant difference in toxicity was observed between the two Ag NP treatments which was attributed to their overlap in particle size.

AB - In this study, the toxicities of sediment-associated silver added to sediment as commercially available silver nanoparticles (Ag NPs, 20 and 80 nm) and aqueous Ag (AgNO3) to the estuarine polychaete, Nereis (Hediste) diversicolor, were investigated for both individual and subcellular endpoints after 10 d of exposure. Both Ag NP types were characterized in parallel to the toxicity studies and found to be polydispersed and overlapping in size. Burrowing activity decreased (marginally) with increasing Ag concentration and depended on the form of Ag added to sediment. All worms accumulated Ag regardless of the form in which it was added to the sediment, and worm size (expressed as dry weight) was found to significantly affect bioaccumulation such that smaller worms accumulated more Ag per body weight than larger worms. Lysosomal membrane permeability (neutral red retention time, NRRT) and DNA damage (comet assay tail moment and tail DNA intensity %) of Nereis coelomocytes increased in a concentration-dependent manner in all three Ag treatments. Ag NP treatments were more toxic than aqueous Ag for all toxicity endpoints, even though bioaccumulation did not differ significantly among Ag forms. No significant difference in toxicity was observed between the two Ag NP treatments which was attributed to their overlap in particle size.

KW - Silver nanoparticles

KW - Sediment exposure

KW - Burrowing behavior

KW - Ag body burden

KW - Lysosomal membrane stability

KW - DNA damage

U2 - 10.1016/j.aquatox.2014.08.001

DO - 10.1016/j.aquatox.2014.08.001

M3 - Article

VL - 156

SP - 106

EP - 115

JO - Aquatic Toxicology

JF - Aquatic Toxicology

SN - 0166-445X

ER -