PMID- 36470031 OWN - NLM STAT- MEDLINE DCOM- 20230201 LR - 20230202 IS - 1525-3171 (Electronic) IS - 0032-5791 (Print) IS - 0032-5791 (Linking) VI - 102 IP - 2 DP - 2023 Feb TI - Selenium regulates Nrf2 signaling to prevent hepatotoxicity induced by hexavalent chromium in broilers. PG - 102335 LID - S0032-5791(22)00629-0 [pii] LID - 10.1016/j.psj.2022.102335 [doi] LID - 102335 AB - Hexavalent chromium (Cr(Ⅵ)) is considered to be a common environmental pollutant, which widely exists in industrial effluents and wastes and then potentially noxious effects to the health of the poultry. Studies have reported that selenium (Se), which is one of the essential trace elements of the poultry and participates in the oxidative metabolism, can alleviate Cr(Ⅵ)-induced organ damage by inhibiting oxidative stress, but its specific molecular mechanism remains unclear. Herein, animal models of Cr(Ⅵ)- and Se-exposure were constructed using broilers to investigate the antagonistic mechanism of Se to Cr(Ⅵ)-induced hepatotoxicity. In this experiment, the four groups of broiler models were used as the research objects: control, Se, Se plus Cr, and Cr groups. Histopathology and ultrastructure liver changes were observed. Liver-somatic index, serum biochemistry, oxidative stress, Nrf2 pathway related factors, and autophagy-related genes were also determined. Overall, Se was found to ameliorate the disorganized structure, hepatic insufficiency, and oxidative damage caused by Cr(Ⅵ) exposure. Electron microscopy analysis further showed that the number of autophagosomes was obviously decreased after Se treatment compared to Cr group. Furthermore, gene and protein expression analyses illustrated that the levels of Nrf2, glutathione peroxidase 1 (GPx-1), NAD(P)H: quinone oxidoreductase 1 (NQO1), and mechanistic target of rapamycin (mTOR) in the Se&Cr group was upregulated, along with decreased expression of Beclin 1, ATG5 and LC3 compared to the Cr group. These suggest that Se can repair the oxidative lesion and autophagy induced by Cr(Ⅵ) exposure in broiler livers by upregulating the Nrf2 signaling pathway. CI - Copyright (c) 2022. Published by Elsevier Inc. FAU - Wang, Jingqiu AU - Wang J AD - College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Jinzhong, 030801, P. R. China. FAU - Liu, Ci AU - Liu C AD - College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Jinzhong, 030801, P. R. China. Electronic address: liuci1988@163.com. FAU - Zhao, Yanbing AU - Zhao Y AD - College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Jinzhong, 030801, P. R. China. FAU - Wang, Jinglu AU - Wang J AD - College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Jinzhong, 030801, P. R. China. FAU - Li, Jianhui AU - Li J AD - College of Animal Science, Shanxi Agricultural University, Taigu, Jinzhong, 030801, P. R. China. FAU - Zheng, Mingxue AU - Zheng M AD - College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Jinzhong, 030801, P. R. China. LA - eng PT - Journal Article DEP - 20221112 PL - England TA - Poult Sci JT - Poultry science JID - 0401150 RN - H6241UJ22B (Selenium) RN - 18540-29-9 (chromium hexavalent ion) RN - 0 (NF-E2-Related Factor 2) RN - 0R0008Q3JB (Chromium) SB - IM MH - Animals MH - *Selenium/pharmacology/metabolism MH - Chickens/metabolism MH - NF-E2-Related Factor 2/genetics/metabolism MH - Chromium/toxicity/metabolism MH - Oxidative Stress MH - *Chemical and Drug Induced Liver Injury/prevention & control/veterinary MH - Signal Transduction PMC - PMC9719864 OTO - NOTNLM OT - Nrf2 signaling pathway OT - autophagy OT - hepatotoxicity OT - hexavalent chromium OT - selenium EDAT- 2022/12/06 06:00 MHDA- 2023/02/02 06:00 PMCR- 2022/11/12 CRDT- 2022/12/05 18:17 PHST- 2022/04/11 00:00 [received] PHST- 2022/11/05 00:00 [revised] PHST- 2022/11/08 00:00 [accepted] PHST- 2022/12/06 06:00 [pubmed] PHST- 2023/02/02 06:00 [medline] PHST- 2022/12/05 18:17 [entrez] PHST- 2022/11/12 00:00 [pmc-release] AID - S0032-5791(22)00629-0 [pii] AID - 102335 [pii] AID - 10.1016/j.psj.2022.102335 [doi] PST - ppublish SO - Poult Sci. 2023 Feb;102(2):102335. doi: 10.1016/j.psj.2022.102335. Epub 2022 Nov 12.