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The uptake of ZnO and CuO nanoparticles in the water-flea Daphnia magna under acute exposure scenarios.
Environ Pollut. 2014 Nov; 194:130-137.EP

Abstract

In this study the uptake of ZnO and CuO nanoparticles by Daphnia magna was tested. Daphnids were exposed during 48 h to acute concentrations of the nanoparticles and corresponding metal salts. The Daphnia zinc and copper concentration was measured and the nanoparticles were localized using electron microscopy. The aggregation and dissolution in the medium was characterized. A fast dissolution of ZnO in the medium was observed, while most CuO formed large aggregates and only a small fraction dissolved. The Daphnia zinc concentration was comparable for the nanoparticles and salts. Contrarily, a much higher Daphnia copper concentration was observed in the CuO exposure, compared to the copper salt. CuO nanoparticles adsorbed onto the carapace and occurred in the gut but did not internalize in the tissues. The combined dissolution and uptake results indicate that the toxicity of both nanoparticle types was caused by metal ions dissolved from the particles in the medium.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Adam N
Systemic Physiological and Ecotoxicological Research, Department of Biology, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerpen, Belgium. Electronic address: nathalieadam12@gmail.com.
Leroux F
Electron Microscopy for Materials Science (EMAT), Department of Physics, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerpen, Belgium.
Knapen D
Physiology and Biochemistry of Domestic Animals, Department of Veterinary Sciences, University of Antwerp, Universiteitslaan 1, 2610 Wilrijk, Belgium.
Bals S
Electron Microscopy for Materials Science (EMAT), Department of Physics, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerpen, Belgium.
Blust R
Systemic Physiological and Ecotoxicological Research, Department of Biology, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerpen, Belgium.

MeSH

AnimalsCopperDaphniaMetal NanoparticlesToxicity Tests, AcuteWater Pollutants, ChemicalZinc Oxide

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

25108488

Citation

Adam, Nathalie, et al. "The Uptake of ZnO and CuO Nanoparticles in the Water-flea Daphnia Magna Under Acute Exposure Scenarios." Environmental Pollution (Barking, Essex : 1987), vol. 194, 2014, pp. 130-137.
Adam N, Leroux F, Knapen D, et al. The uptake of ZnO and CuO nanoparticles in the water-flea Daphnia magna under acute exposure scenarios. Environ Pollut. 2014;194:130-137.
Adam, N., Leroux, F., Knapen, D., Bals, S., & Blust, R. (2014). The uptake of ZnO and CuO nanoparticles in the water-flea Daphnia magna under acute exposure scenarios. Environmental Pollution (Barking, Essex : 1987), 194, 130-137. https://doi.org/10.1016/j.envpol.2014.06.037
Adam N, et al. The Uptake of ZnO and CuO Nanoparticles in the Water-flea Daphnia Magna Under Acute Exposure Scenarios. Environ Pollut. 2014;194:130-137. PubMed PMID: 25108488.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The uptake of ZnO and CuO nanoparticles in the water-flea Daphnia magna under acute exposure scenarios. AU - Adam,Nathalie, AU - Leroux,Frédéric, AU - Knapen,Dries, AU - Bals,Sara, AU - Blust,Ronny, Y1 - 2014/08/07/ PY - 2014/04/24/received PY - 2014/06/26/revised PY - 2014/06/27/accepted PY - 2014/8/11/entrez PY - 2014/8/12/pubmed PY - 2014/12/15/medline KW - Aggregation KW - Copper KW - Dissolution KW - Electron microscopy KW - Zinc SP - 130 EP - 137 JF - Environmental pollution (Barking, Essex : 1987) JO - Environ Pollut VL - 194 N2 - In this study the uptake of ZnO and CuO nanoparticles by Daphnia magna was tested. Daphnids were exposed during 48 h to acute concentrations of the nanoparticles and corresponding metal salts. The Daphnia zinc and copper concentration was measured and the nanoparticles were localized using electron microscopy. The aggregation and dissolution in the medium was characterized. A fast dissolution of ZnO in the medium was observed, while most CuO formed large aggregates and only a small fraction dissolved. The Daphnia zinc concentration was comparable for the nanoparticles and salts. Contrarily, a much higher Daphnia copper concentration was observed in the CuO exposure, compared to the copper salt. CuO nanoparticles adsorbed onto the carapace and occurred in the gut but did not internalize in the tissues. The combined dissolution and uptake results indicate that the toxicity of both nanoparticle types was caused by metal ions dissolved from the particles in the medium. SN - 1873-6424 UR - https://www.unboundmedicine.com/medline/citation/25108488/The_uptake_of_ZnO_and_CuO_nanoparticles_in_the_water_flea_Daphnia_magna_under_acute_exposure_scenarios_ DB - PRIME DP - Unbound Medicine ER -