PMID- 34638088 OWN - NLM STAT- MEDLINE DCOM- 20211101 LR - 20211204 IS - 1879-1514 (Electronic) IS - 0166-445X (Linking) VI - 240 DP - 2021 Nov TI - Zinc antagonizes common carp (Cyprinus carpio) intestinal arsenic poisoning through PI3K/AKT/mTOR signaling cascade and MAPK pathway. PG - 105986 LID - S0166-445X(21)00245-9 [pii] LID - 10.1016/j.aquatox.2021.105986 [doi] AB - Arsenic (As) pollution is a serious and longstanding problem, which has obvious threaten to aquatic organisms. The study aimed to explore the mitigation effect of natural antioxidant zinc (Zn) on As toxicity in the foregut and midgut of common carp (Cyprinus carpio L.), and in-depth disclose related signal cascade. Carps were treated with Zn(2+) (1 mg/L) and/or As(3+) (2.83 mg/L) for a period of 30 days. Under As exposure, the foregut and midgut showed obvious burst of reactive oxygen species (ROS) and breakdown of antioxidant system. What followed is the activation of the endogenous and exogenous apoptotic pathways, and the rise of autophagy level prompted by the increase in LC3 II and the down-regulation of p62. Mitochondrial swelling, cristae fragmentation and autophagosomes were observed under the electron microscope, which also means the occurrence of apoptosis and autophagy. In addition, As induced the activation of p38 mitogen-activated protein kinase (MAPK), c-Jun N-terminal kinase (JNK) and the inhibition of extracellular signal-related kinase (ERK) in MAPK signaling, and up-regulated the level of autophagy through the inhibition of the phosphatidylinositol 3 kinase (PI3K)/AKT/ mammalian target of rapamycin (mTOR) signaling cascade. However, Zn supplementation has clearly reversed the above phenomenon, and it basically has no effect on foregut and midgut. In conclusion, this study shows that Zn can alleviate the damage caused by subchronic As exposure, which provides a reference for the use of Zn preparations in aquaculture. CI - Copyright (c) 2021 Elsevier B.V. All rights reserved. FAU - Guo, Menghao AU - Guo M AD - College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, Heilongjiang, PR China. FAU - Wang, Yu AU - Wang Y AD - College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, Heilongjiang, PR China. FAU - Zhao, Hongjing AU - Zhao H AD - College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, Heilongjiang, PR China. FAU - Wang, Dongxu AU - Wang D AD - College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, Heilongjiang, PR China. FAU - Yin, Kai AU - Yin K AD - College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, Heilongjiang, PR China. FAU - Liu, Yachen AU - Liu Y AD - College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, Heilongjiang, PR China. FAU - Li, Baoying AU - Li B AD - College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, Heilongjiang, PR China. FAU - Xing, Mingwei AU - Xing M AD - College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, Heilongjiang, PR China. Electronic address: xingmingwei@nefu.edu.cn. LA - eng PT - Journal Article DEP - 20211005 PL - Netherlands TA - Aquat Toxicol JT - Aquatic toxicology (Amsterdam, Netherlands) JID - 8500246 RN - 0 (Reactive Oxygen Species) RN - 0 (Water Pollutants, Chemical) RN - EC 2.7.1.137 (Phosphatidylinositol 3-Kinase) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - EC 2.7.11.24 (Extracellular Signal-Regulated MAP Kinases) RN - J41CSQ7QDS (Zinc) SB - IM MH - Animals MH - Apoptosis MH - *Arsenic Poisoning MH - *Carps MH - Extracellular Signal-Regulated MAP Kinases MH - Phosphatidylinositol 3-Kinase MH - Phosphatidylinositol 3-Kinases MH - Proto-Oncogene Proteins c-akt MH - Reactive Oxygen Species MH - TOR Serine-Threonine Kinases MH - *Water Pollutants, Chemical/toxicity MH - Zinc OTO - NOTNLM OT - Antagonist OT - Apoptosis OT - Aquatic environment OT - Autophagy OT - Carp OT - Oxidative stress EDAT- 2021/10/13 06:00 MHDA- 2021/11/03 06:00 CRDT- 2021/10/12 20:24 PHST- 2021/07/08 00:00 [received] PHST- 2021/09/28 00:00 [revised] PHST- 2021/09/29 00:00 [accepted] PHST- 2021/10/13 06:00 [pubmed] PHST- 2021/11/03 06:00 [medline] PHST- 2021/10/12 20:24 [entrez] AID - S0166-445X(21)00245-9 [pii] AID - 10.1016/j.aquatox.2021.105986 [doi] PST - ppublish SO - Aquat Toxicol. 2021 Nov;240:105986. doi: 10.1016/j.aquatox.2021.105986. Epub 2021 Oct 5.