PMID- 29656250 OWN - NLM STAT- MEDLINE DCOM- 20180829 LR - 20181202 IS - 1873-6424 (Electronic) IS - 0269-7491 (Linking) VI - 239 DP - 2018 Aug TI - Exposure to environmental level phenanthrene induces a NASH-like phenotype in new born rat. PG - 261-271 LID - S0269-7491(17)34956-4 [pii] LID - 10.1016/j.envpol.2018.04.030 [doi] AB - More and more evidence indicates that persistent organic pollutants (POPs) are a risk factor for non-alcoholic fatty liver disease (NAFLD) and non-alcoholic steatohepatitis (NASH). Phenanthrene (Phe) is a kind of POP which existed extensively in the environment, but whose toxicity on mammals has so far received less focus. Subcutaneously injection of Phe (0.5, 5, 50 mug/kg) for 21 days induced significant NAFLD/NASH symptoms in new born rats. Exposure to environmental levels of Phe decreased body weight and liver-somatic index; impaired histology of liver; influenced the peroxisome proliferator-activated receptor gamma (PPARgamma) signaling and lipid metabolism in liver; stimulated oxidative stress in the rats' liver; induced the variation of NFkappaB pathway and liver inflammatory response; and caused liver fibrosis via transforming growth factor beta1 (tgfbeta1). We speculated that the subcutaneously injected Phe was transferred to the liver through blood circulation, which may have induced the elevation of PPARgamma directly or indirectly, leading to liver steatosis. Excess lipid, acting as the first hit, stimulated the second hit factors - oxidative stress, inflammatory response and lipid peroxidation, and finally resulted in steatohepatitis and liver fibrosis. CI - Copyright (c) 2018 Elsevier Ltd. All rights reserved. FAU - Guo, Jiaojiao AU - Guo J AD - State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen, 361005, China. FAU - Wang, Chonggang AU - Wang C AD - State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen, 361005, China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361005, China. FAU - Guo, Zhizhun AU - Guo Z AD - State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen, 361005, China. FAU - Zuo, Zhenghong AU - Zuo Z AD - State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen, 361005, China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361005, China. Electronic address: zuozhenghong@xmu.edu.cn. LA - eng PT - Journal Article DEP - 20180413 PL - England TA - Environ Pollut JT - Environmental pollution (Barking, Essex : 1987) JID - 8804476 RN - 0 (Environmental Pollutants) RN - 0 (Phenanthrenes) RN - 448J8E5BST (phenanthrene) SB - IM MH - Animals MH - Environmental Pollutants/*toxicity MH - Lipid Metabolism MH - Lipid Peroxidation MH - Liver/metabolism MH - Male MH - Non-alcoholic Fatty Liver Disease/*chemically induced MH - Oxidative Stress MH - Phenanthrenes/metabolism/*toxicity MH - Phenotype MH - Rats MH - Signal Transduction OTO - NOTNLM OT - Liver fibrosis OT - NFkappaB OT - Non-alcoholic steatohepatitis OT - PPARgamma OT - Phenanthrene EDAT- 2018/04/16 06:00 MHDA- 2018/08/30 06:00 CRDT- 2018/04/16 06:00 PHST- 2017/11/29 00:00 [received] PHST- 2018/03/25 00:00 [revised] PHST- 2018/04/06 00:00 [accepted] PHST- 2018/04/16 06:00 [pubmed] PHST- 2018/08/30 06:00 [medline] PHST- 2018/04/16 06:00 [entrez] AID - S0269-7491(17)34956-4 [pii] AID - 10.1016/j.envpol.2018.04.030 [doi] PST - ppublish SO - Environ Pollut. 2018 Aug;239:261-271. doi: 10.1016/j.envpol.2018.04.030. Epub 2018 Apr 13.