PMID- 33176947 OWN - NLM STAT- MEDLINE DCOM- 20201218 LR - 20201218 IS - 1873-6424 (Electronic) IS - 0269-7491 (Linking) VI - 268 IP - Pt A DP - 2021 Jan 1 TI - Effects of nanoplastics on energy metabolism in the oriental river prawn (Macrobrachium nipponense). PG - 115890 LID - S0269-7491(20)36579-9 [pii] LID - 10.1016/j.envpol.2020.115890 [doi] AB - Nanoplastics are common pollutants in aquatic environments and have attracted widespread research attention. However, few studies focus on the effects of nanoplastic exposure on energy metabolism in crustaceans. Accordingly, we exposed juvenile oriental river prawns (Macrobrachium nipponense) to different concentrations of 75-nm polystyrene nanoplastics (0, 5, 10, 20, and 40 mg/L) for 7, 14, 21, or 28 days. Thereafter, the effects of nanoplastic exposure on metabolite content, energy metabolism-related enzyme activity, and gene expression were evaluated. Our results showed that (1) with increasing nanoplastic concentration and exposure time, the survival rate decreased, while weight gain rate and molting number increased and then decreased; glycogen, triglyceride, and total cholesterol content all declined while lactic acid content increased with higher exposure to nanoplastic concentrations; (2) the activities of acetyl-CoA carboxylase (ACC), hexokinase (HK), carnitine palmitoyl transferase-1, pyruvate kinase (PK), lipase, and fatty acid synthase tended to decrease, while the activity of lactate dehydrogenase (LDH) increased. In particular, the activity of 6-phosphofructokinase exposed to 5 mg/L nanoplastics increased significantly (P < 0.05). (3) Expression of the metabolism-related genes 6-phosphate glucokinase (G-6-Pase), HK, PK, ACC, Acetyl-CoA-binding protein (ACBP), CPT-1, and fatty-acid-binding protein 10 (FABP 10) increased and then decreased, while expression of the LDH gene showed an upward trend. These results indicate that nanoplastics affect growth, enzyme activity, and the gene expression of energy metabolism in M. nipponense, and that high concentrations of nanoplastics have a negative impact on energy metabolism. CI - Copyright (c) 2020 Elsevier Ltd. All rights reserved. FAU - Li, Yiming AU - Li Y AD - School of Life Science, East China Normal University, Shanghai, 200241, China. FAU - Liu, Zhiquan AU - Liu Z AD - School of Life Science, East China Normal University, Shanghai, 200241, China. FAU - Yang, Yuan AU - Yang Y AD - School of Life Science, East China Normal University, Shanghai, 200241, China. FAU - Jiang, Qichen AU - Jiang Q AD - Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, 210017, China. FAU - Wu, Donglei AU - Wu D AD - School of Life Science, East China Normal University, Shanghai, 200241, China. FAU - Huang, Youhui AU - Huang Y AD - School of Life Science, East China Normal University, Shanghai, 200241, China. FAU - Jiao, Yang AU - Jiao Y AD - School of Life Science, East China Normal University, Shanghai, 200241, China. FAU - Chen, Qiang AU - Chen Q AD - School of Life Science, East China Normal University, Shanghai, 200241, China. FAU - Huang, Yinying AU - Huang Y AD - School of Life Science, East China Normal University, Shanghai, 200241, China. FAU - Zhao, Yunlong AU - Zhao Y AD - School of Life Science, East China Normal University, Shanghai, 200241, China; State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, 200241, China. Electronic address: ylzhao426@163.com. LA - eng PT - Journal Article DEP - 20201030 PL - England TA - Environ Pollut JT - Environmental pollution (Barking, Essex : 1987) JID - 8804476 RN - 0 (2-cyclohexylidenhydrazo-4-phenyl-thiazole) RN - 0 (Microplastics) RN - 0 (Thiazoles) SB - IM MH - Animals MH - Energy Metabolism MH - Microplastics MH - Molting MH - *Palaemonidae MH - Thiazoles OTO - NOTNLM OT - Energy metabolism OT - Enzyme activity OT - Gene expression OT - Macrobrachium nipponense OT - Nanoplastics 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- 2020/11/13 06:00 MHDA- 2020/12/19 06:00 CRDT- 2020/11/12 05:32 PHST- 2020/04/22 00:00 [received] PHST- 2020/10/10 00:00 [revised] PHST- 2020/10/15 00:00 [accepted] PHST- 2020/11/13 06:00 [pubmed] PHST- 2020/12/19 06:00 [medline] PHST- 2020/11/12 05:32 [entrez] AID - S0269-7491(20)36579-9 [pii] AID - 10.1016/j.envpol.2020.115890 [doi] PST - ppublish SO - Environ Pollut. 2021 Jan 1;268(Pt A):115890. doi: 10.1016/j.envpol.2020.115890. Epub 2020 Oct 30.