English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/174566
logo share SHARE   Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

DC FieldValueLanguage
dc.contributor.authorVolland, Moritzes_ES
dc.contributor.authorHampel, Miriames_ES
dc.contributor.authorTrombini, Chiaraes_ES
dc.contributor.authorGarcía-Negrete, C. A.es_ES
dc.contributor.authorFernández, A.es_ES
dc.contributor.authorGomes, Taniaes_ES
dc.contributor.authorBlasco, Juliánes_ES
dc.identifier.citationSETAC Europe 24th Annual Meeting (2014)es_ES
dc.descriptionTrabajo presentado en la SETAC Europe 24th Annual Meeting (Science Across Bridges, Borders and Boundaries), celebrada en Basilea del 11 al 15 de mayo de 2014.es_ES
dc.description.abstractEngineered gold nanoparticles (AuNPs) are introduced into a growing number of commercial products. The resulting increase in likelihood of release into various environmental compartments needs to be met by an increased understanding of their effects on the species within. Up to date limited information is available on the ecotoxicological risk for non-target organisms in marine environments, with the majority of research focusing on m agnified expectable environmental concentrations. In our laboratory-based study the bivalve Ruditapes philippinarumwas chosen as a model to evaluate uptake, elimination and sub-cellular effects of citrate -stabilized AuNPs (21.5 ± 2.9 nm) at an environmental relevant concentration (0.75 μg L-1) over 14 days. Tissue (digestive gland and gills) was sampled on days 0,1, 7 and 14 to record changes in the expression of chosen endpoints over time. Gold concentration in tissue and faeces, enzymatic biomarkers of i.) oxidative stress (CAT, GST, SOD, GPx, GPx-Se), ii.) damage (lipid peroxidation, DNA strand breaks) and iii.) exposure (Metallothionein, AChE), as well as gene expression by means of quantitative reverse transcription PCR (qRT-PCR) for selected sets of genes were measured. We observed an uptake of AuNPs in both organs and an effect on the activity of the tested biomarkers, with the digestive gland being the primary target organ. While qRT-PCR expression levels raise some concerns regarding the effects of chronic AuNP exposure, at the tested concentration the particles did not cause significant oxidative damage. Further we could demonstrate a significant elimination of Au from the digestive track within a 7 day purification period, with excretion being an important pathway.es_ES
dc.titleCitrate gold nanoparticle exposure in the marine clam Ruditapes philippinarum: Uptake, elimination and effectes_ES
dc.typecomunicación de congresoes_ES
oprm.item.hasRevisionno ko 0 false*
Appears in Collections:(ICMAN) Comunicaciones congresos
(ICMS) Comunicaciones congresos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf59,24 kBAdobe PDFThumbnail
Show simple item record

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.