Manufactured nanoparticles in the aquatic environment-biochemical responses on freshwater organisms: A critical overview.

Autor: Vale G; Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Torre Sul Av. Rovisco Pais, 1049-001 Lisboa, Portugal; Department of Molecular Genetics, University of Texas Southwestern Medical Center, Harry Dallas, TX 75390, USA. Electronic address: goncalovale@gmail.com., Mehennaoui K; Luxembourg Institute of Science and Technology, Environmental Research and Innovation (ERIN) Department, Belvaux, Luxembourg. Electronic address: kahina.mehennaoui@list.lu., Cambier S; Luxembourg Institute of Science and Technology, Environmental Research and Innovation (ERIN) Department, Belvaux, Luxembourg. Electronic address: sebastien.cambier@list.lu., Libralato G; Department of Environmental Sciences, Informatics and Statistics, University Ca' Foscari Venice, Via Torino 155, 30172, Mestre, Venice, Italy. Electronic address: giovanni.libralato@unive.it., Jomini S; Laboratoire Interdisciplinaire des Environements Continentaux (LIEC), Université de Lorraine, UMR 7360, Campus Bridoux rue du Général Delestraint, 57070 Metz, France. Electronic address: stephane.jomini@gmail.com., Domingos RF; Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Torre Sul Av. Rovisco Pais, 1049-001 Lisboa, Portugal; Institut de Physique du Globe de Paris, Sorbonne Paris Cité, UMR CNRS 7154, Université Paris Diderot, 75205 Paris Cedex 05, France. Electronic address: rifdom@hotmail.com.
Jazyk: angličtina
Zdroj: Aquatic toxicology (Amsterdam, Netherlands) [Aquat Toxicol] 2016 Jan; Vol. 170, pp. 162-174. Date of Electronic Publication: 2015 Nov 23.
DOI: 10.1016/j.aquatox.2015.11.019
Abstrakt: The enormous investments in nanotechnology have led to an exponential increase of new manufactured nano-enabled materials whose impact in the aquatic systems is still largely unknown. Ecotoxicity and nanosafety studies mostly resulted in contradictory results and generally failed to clearly identify biological patterns that could be related specifically to nanotoxicity. Generation of reactive oxygen species (ROS) is one of the most discussed nanotoxicity mechanism in literature. ROS can induce oxidative stress (OS), resulting in cyto- and genotoxicity. The ROS overproduction can trigger the induction of anti-oxidant enzymes such as catalase (CAT), superoxide dismutase (SOD) and glutathione peroxidases (GPx), which are used as biomarkers of response. A critical overview of the biochemical responses induced by the presence of NPs on freshwater organisms is performed with a strong interest on indicators of ROS and general stress. A special focus will be given to the NPs transformations, including aggregation, and dissolution, in the exposure media and the produced biochemical endpoints.
(Copyright © 2015 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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