PMID- 33618313 OWN - NLM STAT- MEDLINE DCOM- 20210421 LR - 20210421 IS - 1879-1026 (Electronic) IS - 0048-9697 (Linking) VI - 775 DP - 2021 Jun 25 TI - Uptake and effects of graphene oxide nanomaterials alone and in combination with polycyclic aromatic hydrocarbons in zebrafish. PG - 145669 LID - S0048-9697(21)00737-3 [pii] LID - 10.1016/j.scitotenv.2021.145669 [doi] AB - Because of its surface characteristics, once in the aquatic environment, graphene could act as a carrier of pollutants, such as polycyclic aromatic hydrocarbons (PAHs), to aquatic organisms. In this study we aimed to (1) assess the capacity of graphene oxide (GO) to sorb PAHs and (2) to evaluate the toxicity of GO alone and in combination with PAHs on zebrafish embryos and adults. GO showed a high sorption capacity for benzo(a)pyrene (B(a)P) (98% of B(a)P sorbed from a nominal concentration of 100 mug/L) and for other PAHs of the water accommodated fraction (WAF) of a naphthenic North Sea crude oil, depending on their log K(ow) (95.7% of phenanthrene, 84.4% of fluorene and 51.5% of acenaphthene). In embryos exposed to different GO nanomaterials alone and with PAHs, no significant mortality was recorded for any treatment. Nevertheless, malformation rate increased significantly in embryos exposed to the highest concentrations (5 or 10 mg/L) of GO and reduced GO (rGO) alone and with sorbed B(a)P (GO-B(a)P). On the other hand, adults were exposed for 21 days to 2 mg/L of GO, GO-B(a)P and GO co-exposed with WAF (GO + WAF) and to 100 mug/L B(a)P. Fish exposed to GO presented GO in the intestine lumen and liver vacuolisation. Transcription level of genes related to cell cycle regulation and oxidative stress was not altered, but the slight up-regulation of cyp1a measured in fish exposed to B(a)P for 3 days resulted in a significantly increased EROD activity. Fish exposed to GO-B(a)P and to B(a)P for 3 days and to GO + WAF for 21 days showed significantly higher catalase activity in the gills than control fish. Significantly lower acetylcholinesterase activity, indicating neurotoxic effects, was also observed in all fish treated for 21 days. Results demonstrated the capacity of GO to carry PAHs and to exert sublethal effects in zebrafish. CI - Copyright (c) 2021 The Authors. Published by Elsevier B.V. All rights reserved. FAU - Martinez-Alvarez, Ignacio AU - Martinez-Alvarez I AD - University of Bordeaux, EPOC-LPTC, UMR 5805 CNRS, F-33405 Talence Cedex, France; CBET research group, Dept. of Zoology and Animal Cell Biology, Research Centre for Experimental Marine Biology and Biotechnology PiE and Science and Technology Faculty, University of the Basque Country (UPV/EHU), Sarriena z/g, E-48940 Leioa, Basque Country, Spain. FAU - Le Menach, Karyn AU - Le Menach K AD - University of Bordeaux, EPOC-LPTC, UMR 5805 CNRS, F-33405 Talence Cedex, France. FAU - Devier, Marie-Helene AU - Devier MH AD - University of Bordeaux, EPOC-LPTC, UMR 5805 CNRS, F-33405 Talence Cedex, France. FAU - Barbarin, Iranzu AU - Barbarin I AD - POLYMAT and University of the Basque Country UPV/EHU, Joxe Mari Korta Center - Avda. Tolosa, 72, 20018 San Sebastian, Spain. FAU - Tomovska, Radmila AU - Tomovska R AD - POLYMAT and University of the Basque Country UPV/EHU, Joxe Mari Korta Center - Avda. Tolosa, 72, 20018 San Sebastian, Spain; IKERBASQUE, Basque Foundation of Science, Plaza Euskadi, 5, Bilbao 48009, Spain. FAU - Cajaraville, Miren P AU - Cajaraville MP AD - CBET research group, Dept. of Zoology and Animal Cell Biology, Research Centre for Experimental Marine Biology and Biotechnology PiE and Science and Technology Faculty, University of the Basque Country (UPV/EHU), Sarriena z/g, E-48940 Leioa, Basque Country, Spain. FAU - Budzinski, Helene AU - Budzinski H AD - University of Bordeaux, EPOC-LPTC, UMR 5805 CNRS, F-33405 Talence Cedex, France. FAU - Orbea, Amaia AU - Orbea A AD - CBET research group, Dept. of Zoology and Animal Cell Biology, Research Centre for Experimental Marine Biology and Biotechnology PiE and Science and Technology Faculty, University of the Basque Country (UPV/EHU), Sarriena z/g, E-48940 Leioa, Basque Country, Spain. Electronic address: amaia.orbea@ehu.eus. LA - eng PT - Journal Article DEP - 20210206 PL - Netherlands TA - Sci Total Environ JT - The Science of the total environment JID - 0330500 RN - 0 (Polycyclic Aromatic Hydrocarbons) RN - 0 (Water Pollutants, Chemical) RN - 0 (graphene oxide) RN - 7782-42-5 (Graphite) SB - IM MH - Animals MH - *Graphite/toxicity MH - *Nanostructures MH - North Sea MH - *Polycyclic Aromatic Hydrocarbons/analysis/toxicity MH - *Water Pollutants, Chemical/toxicity MH - Zebrafish OTO - NOTNLM OT - Adsorption OT - Aquatic nanotoxicity OT - Carbon based nanomaterials OT - Organic pollutants COIS- Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2021/02/23 06:00 MHDA- 2021/04/22 06:00 CRDT- 2021/02/22 20:17 PHST- 2020/10/27 00:00 [received] PHST- 2021/01/18 00:00 [revised] PHST- 2021/02/02 00:00 [accepted] PHST- 2021/02/23 06:00 [pubmed] PHST- 2021/04/22 06:00 [medline] PHST- 2021/02/22 20:17 [entrez] AID - S0048-9697(21)00737-3 [pii] AID - 10.1016/j.scitotenv.2021.145669 [doi] PST - ppublish SO - Sci Total Environ. 2021 Jun 25;775:145669. doi: 10.1016/j.scitotenv.2021.145669. Epub 2021 Feb 6.