Assessment of gold nanoparticle effects in a marine teleost (Sparus aurata) using molecular and biochemical biomarkers
authors Teles, M; Fierro-Castro, C; Na-Phatthalung, P; Tvarijonaviciute, A; Trindade, T; Soares, AMVM; Tort, L; Oliveira, M
nationality International
journal AQUATIC TOXICOLOGY
author keywords Gold nanoparticles; Fish; Transcriptional levels; Biochemical; Integrated biomarker response
keywords SHORT-TERM EXPOSURE; OXIDATIVE STRESS; SCROBICULARIA-PLANA; FISH; TOXICITY; TIME; ZEBRAFISH; PCR; BIOACCUMULATION; NORMALIZATION
abstract Gold nanoparticles (AuNP) are increasingly employed in a variety of applications and are likely to be increasing in the environment, posing a potential emerging environmental threat. Information on possible hazardous effects of engineered nanoparticles is urgently required to ensure human and environmental safety and promote the safe use of novel nanotechnologies. Nevertheless, there is a lack of comprehensive knowledge on AuNP effects in marine species. The present study aimed to assess AuNP effects in a marine teleost, Sparus aurata, by combining endpoints at different biological levels (molecular and biochemical). For that purpose, fish were exposed via water for 96 h to 4, 80 and 1600 mu g L-1 of AuNP (similar to 40 nm) coated with citrate or polyvinylpyrrolidone (PVP). Results revealed a significant impact of AuNP-PVP in the hepatic expression of antioxidant, immune and apoptosis related genes. Total oxidative status was increased in plasma after exposure to the lowest concentration of AuNP-PVP, although without altering the total antioxidant capacity. Furthermore, AuNP did not induce significant damage in the liver since the activity of neither hepatic indicator (aspartate aminotransferase and alkaline phosphatase) increased. Overall, the present study demonstrated that AuNP, even with a biocompatible coating is able to alter oxidative status and expression of relevant target genes in marine fish. Another important finding is that effects are mainly induced by the lowest and intermediate concentrations of the PVP coated AuNP revealing the importance of different coatings. (C) 2016 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 0166-445X
year published 2016
volume 177
beginning page 125
ending page 135
digital object identifier (doi) 10.1016/j.aquatox.2016.05.015
web of science category Marine & Freshwater Biology; Toxicology
subject category Marine & Freshwater Biology; Toxicology
unique article identifier WOS:000381529700014
  ciceco authors
  impact metrics
times cited (wos core): 5
journal impact factor (jcr 2016): 4.129
5 year journal impact factor (jcr 2016): 4.425
category normalized journal impact factor percentile (jcr 2016): 93.646
altmetrics:



 


Events
Sponsors

1suponsers_list_ciceco.jpg