PMID- 36435242 OWN - NLM STAT- MEDLINE DCOM- 20221214 LR - 20221222 IS - 1879-1026 (Electronic) IS - 0048-9697 (Linking) VI - 859 IP - Pt 2 DP - 2023 Feb 10 TI - Polystyrene nanoplastics enhance the toxicological effects of DDE in zebrafish (Danio rerio) larvae. PG - 160457 LID - S0048-9697(22)07559-3 [pii] LID - 10.1016/j.scitotenv.2022.160457 [doi] AB - Anthropogenic releases of plastics, persistent organic pollutants (POPs), and heavy metals can impact the environment, including aquatic ecosystems. Nanoplastics (NPs) have recently emerged as pervasive environmental pollutants that have the ability to adsorb POPs and can cause stress in organisms. Among POPs, DDT and its metabolites are ubiquitous environmental pollutants due to their long persistence. Despite the discontinued use of DDT in Europe, DDT and its metabolites (primarily p,p'-DDE) are still found at detectable levels in fish feed used in salmon aquaculture. Our study aimed to look at the individual and combined toxicity of NPs (50 mg/L polystyrene) and DDE (100 mug/L) using zebrafish larvae as a model. We found no significant morphological, cardiac, respiratory, or behavioural changes in zebrafish larvae exposed to NPs alone. Conversely, morphological, cardiac and respiratory alterations were observed in zebrafish larvae exposed to DDE and NPs + DDE. Interestingly, behavioural changes were only observed in zebrafish larvae exposed to NPs + DDE. These findings were supported by RNA-seq results, which showed that some cardiac, vascular, and immunogenic pathways were downregulated only in zebrafish larvae exposed to NPs + DDE. In summary, we found an enhanced toxicological impact of DDE when combined with NPs. CI - Copyright (c) 2022 The Authors. Published by Elsevier B.V. All rights reserved. FAU - Varshney, Shubham AU - Varshney S AD - Faculty of Biosciences and Aquaculture, Nord University, Bodo, Norway. FAU - Gora, Adnan H AU - Gora AH AD - Faculty of Biosciences and Aquaculture, Nord University, Bodo, Norway. FAU - Kiron, Viswanath AU - Kiron V AD - Faculty of Biosciences and Aquaculture, Nord University, Bodo, Norway. FAU - Siriyappagouder, Prabhugouda AU - Siriyappagouder P AD - Faculty of Biosciences and Aquaculture, Nord University, Bodo, Norway. FAU - Dahle, Dalia AU - Dahle D AD - Faculty of Biosciences and Aquaculture, Nord University, Bodo, Norway. FAU - Kogel, Tanja AU - Kogel T AD - Institute of Marine Research, Bergen, Norway; Faculty of Mathematics and Natural Sciences, University of Bergen, Norway. FAU - Ornsrud, Robin AU - Ornsrud R AD - Institute of Marine Research, Bergen, Norway. FAU - Olsvik, Pal A AU - Olsvik PA AD - Faculty of Biosciences and Aquaculture, Nord University, Bodo, Norway; Institute of Marine Research, Bergen, Norway. Electronic address: pal.a.olsvik@nord.no. LA - eng PT - Journal Article DEP - 20221123 PL - Netherlands TA - Sci Total Environ JT - The Science of the total environment JID - 0330500 RN - 0 (Polystyrenes) RN - 0 (Water Pollutants, Chemical) RN - 0 (Environmental Pollutants) SB - IM MH - Animals MH - Zebrafish/metabolism MH - Larva MH - Polystyrenes/toxicity/metabolism MH - Ecosystem MH - *Water Pollutants, Chemical/metabolism MH - *Environmental Pollutants/metabolism OTO - NOTNLM OT - Behavioural toxicity OT - Cardiotoxicity OT - DDT OT - DanioVision system OT - Respiration COIS- Declaration of competing interest The authors declare no conflict of interest. EDAT- 2022/11/27 06:00 MHDA- 2022/12/15 06:00 CRDT- 2022/11/26 19:24 PHST- 2022/09/21 00:00 [received] PHST- 2022/11/15 00:00 [revised] PHST- 2022/11/20 00:00 [accepted] PHST- 2022/11/27 06:00 [pubmed] PHST- 2022/12/15 06:00 [medline] PHST- 2022/11/26 19:24 [entrez] AID - S0048-9697(22)07559-3 [pii] AID - 10.1016/j.scitotenv.2022.160457 [doi] PST - ppublish SO - Sci Total Environ. 2023 Feb 10;859(Pt 2):160457. doi: 10.1016/j.scitotenv.2022.160457. Epub 2022 Nov 23.