Converging hazard assessment of gold nanoparticles to aquatic organisms. 2013

Jesús Pablo García-Cambero, and Mercedes Núñez García, and Gema Díaz López, and Ana López Herranz, and Laureano Cuevas, and Esperanza Pérez-Pastrana, and Judith Sendra Cuadal, and Marc Ramis Castelltort, and Argelia Castaño Calvo
Toxicology Area, National Centre for Environmental Health, ISCIII Health Institute, Ctra Majadahonda-Pozuelo km 2, 28220 Majadahonda, Madrid, Spain. Electronic address: jesuspgc@isciii.es.

The gold nanoparticles (Au-NPs) are being increasingly used because of their huge diversity of applications, and consequently, elevated levels in the environment are expected. However, due to their physico-chemical properties and functionalization a high variety of Au-NPs can be found, and complete toxicological information for each type of Au-NPs still lacks, and even, the toxicological information for the same species is sometimes contradictory. Therefore, hazard assessment should be done case by case. Hence, the objective of this study was to obtain ecotoxicological information of the same Au-NPs in aquatic organisms and to find a rationale for Au-NPs toxicity. For such a purpose, bare and hyaluronic acid capped Au-NPs (12.5 nm) along with Au-NPs bulk material were tested on freshwater algae, Daphnia and zebrafish. Results showed that while gold nanoparticles were found to be harmless to the tested organisms, the soluble gold showed to be toxic to algae and Daphnia, with an LC50 between 1 and 2 mg L(-1). Comparing our results with those gathered in the literature, it appears that a common hazard assessment of Au-NPs on the studied organisms can be elucidated.

UI MeSH Term Description Entries
D003621 Daphnia A diverse genus of minute freshwater CRUSTACEA, of the suborder CLADOCERA. They are a major food source for both young and adult freshwater fish. Daphnias
D006046 Gold A yellow metallic element with the atomic symbol Au, atomic number 79, and atomic weight 197. It is used in jewelry, goldplating of other metals, as currency, and in dental restoration. Many of its clinical applications, such as ANTIRHEUMATIC AGENTS, are in the form of its salts.
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D014874 Water Pollutants, Chemical Chemical compounds which pollute the water of rivers, streams, lakes, the sea, reservoirs, or other bodies of water. Chemical Water Pollutants,Landfill Leachate,Leachate, Landfill,Pollutants, Chemical Water
D015027 Zebrafish An exotic species of the family CYPRINIDAE, originally from Asia, that has been introduced in North America. Zebrafish is a model organism for drug assay and cancer research. Brachydanio rerio,Danio rerio,B. rerio,D. rerio,Zebra Fish,Zebra Fishes,Zebra danio,Zebrafishes,D. rerios,Fishes, Zebra,Zebra danios,danio, Zebra
D053768 Metal Nanoparticles Nanoparticles produced from metals whose uses include biosensors, optics, and catalysts. In biomedical applications the particles frequently involve the noble metals, especially gold and silver. Metal Nanocrystals,Metallic Nanocrystals,Metallic Nanoparticles,Metal Nanocrystal,Metal Nanoparticle,Metallic Nanocrystal,Metallic Nanoparticle,Nanocrystal, Metal,Nanocrystal, Metallic,Nanocrystals, Metal,Nanocrystals, Metallic,Nanoparticle, Metal,Nanoparticle, Metallic,Nanoparticles, Metal,Nanoparticles, Metallic
D059001 Aquatic Organisms Organisms that live in water. Marine Organisms,Aquatic Organism,Marine Organism,Organism, Aquatic,Organism, Marine,Organisms, Aquatic,Organisms, Marine
D018570 Risk Assessment The qualitative or quantitative estimation of the likelihood of adverse effects that may result from exposure to specified health hazards or from the absence of beneficial influences. (Last, Dictionary of Epidemiology, 1988) Assessment, Risk,Benefit-Risk Assessment,Risk Analysis,Risk-Benefit Assessment,Health Risk Assessment,Risks and Benefits,Analysis, Risk,Assessment, Benefit-Risk,Assessment, Health Risk,Assessment, Risk-Benefit,Benefit Risk Assessment,Benefit-Risk Assessments,Benefits and Risks,Health Risk Assessments,Risk Analyses,Risk Assessment, Health,Risk Assessments,Risk Benefit Assessment,Risk-Benefit Assessments

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