Size dependent bioaccumulation and ecotoxicity of gold nanoparticles in an endobenthic invertebrate: the Tellinid clam Scrobicularia plana
| Autor: | Douglas Gilliland, Catherine Mouneyrac, Pierre-Emmanuel Buffet, Jin-Fen Pan, Marielle Guibbolini, Yolaine Joubert, Eugenia Valsami-Jones, Claude Amiard-Triquet, Laurence Poirier, Christine Risso-de Faverney, Paul Pilet, Michèle Roméo |
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| Rok vydání: | 2011 |
| Předmět: |
Health
Toxicology and Mutagenesis Metal Nanoparticles 02 engineering and technology 010501 environmental sciences Toxicology 01 natural sciences Thiobarbituric Acid Reactive Substances Superoxide dismutase chemistry.chemical_compound Metallothionein Animals 14. Life underwater Scrobicularia plana 0105 earth and related environmental sciences Glutathione Transferase biology Behavior Animal Superoxide Dismutase General Medicine Glutathione 021001 nanoscience & nanotechnology biology.organism_classification Catalase Pollution Bivalvia Oxidative Stress chemistry 13. Climate action Colloidal gold Bioaccumulation Environmental chemistry biology.protein Acetylcholinesterase Gold Ecotoxicity 0210 nano-technology Biomarkers Water Pollutants Chemical |
| Zdroj: | Environmental pollution (Barking, Essex : 1987). 168 |
| ISSN: | 1873-6424 |
| Popis: | Gold nanoparticles (AuNPs) have important technological applications resulting in an increased potential for release to the environment, and a greater possibility of toxicological effects. The marine bivalve Scrobicularia plana was exposed to AuNPs of size 5, 15 and 40 nm during a 16 d laboratory exposure at 100 μg Au L −1 . After exposure to AuNPs forming aggregates (>700 nm), the clams accumulated Au in their soft tissues. Biochemical (biomarkers) and behavioral (burrowing and feeding) responses were investigated. Au NPs were responsible of metallothionein induction (5, 40 nm), increased activities of catalase (15, 40 nm) and superoxide dismutase (40 nm) and of glutathione S-transferase by the three sizes of AuNPs indicating defense against oxidative stress. Exposure to AuNPs impaired burrowing behavior. However, it must be underlined that these effects were observed at a dose much higher than expected in the environment. |
| Databáze: | OpenAIRE |
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