PMID- 20371285 OWN - NLM STAT- MEDLINE DCOM- 20100617 LR - 20181201 IS - 1879-3177 (Electronic) IS - 0887-2333 (Linking) VI - 24 IP - 4 DP - 2010 Jun TI - Participation of lipid transport and fatty acid metabolism in valproate sodium-induced hepatotoxicity in HepG2 cells. PG - 1086-91 LID - 10.1016/j.tiv.2010.03.014 [doi] AB - The hepatotoxicity induced by valproic acid (VPA) has been described in many clinical studies and the related mechanism has been partly elucidated. The objective of this study is to investigate the hepatotoxicity and its underlying mechanism of valproic acid on human hepatoma carcinoma cell line HepG2. The cell viability was evaluated by 3-(4,5-dimethyltyiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. The activities of alanine aminotransferase (ALT), aspartate aminotransferase (AST) and lactate dehydrogenase (LDH) in the medium were detected using spectrophotometry. The gene expressions of cytochrome P450 1 A1 (CYP1A1), ATP-binding cassette transporter G1 (ABCG1) and carnitine palmitoyltransferase 1 (CPT1A), related to lipid transport and fatty acid metabolism, were measured by quantitative real-time reverse transcriptase-PCR. Treatment with valproate sodium obviously decreased the viability of HepG2 cells, accompanied by the increased leakages of ALT, AST and LDH in a dose-dependent manner. Furthermore, the gene expressions of CYP1A1, ABCG1 and CPT1A were almost up-regulated in the treated groups. In conclusion, these data suggest that VPA-induced hepatotoxicity was critically enhanced with the elevation of valproate sodium, which may be correlated with up-regulated gene expressions of CYP1A1, ABCG1 and CPT1A. CI - Copyright 2010 Elsevier Ltd. All rights reserved. FAU - Ji, Qiaoli AU - Ji Q AD - Department of Pharmacology and Pharmacy, Key Laboratory of Environment and Genes Related to Diseases, School of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China. FAU - Shi, Xiaolian AU - Shi X FAU - Lin, Rong AU - Lin R FAU - Mao, Youhua AU - Mao Y FAU - Zhai, Xiaogang AU - Zhai X FAU - Lin, Qinqin AU - Lin Q FAU - Zhang, Jiye AU - Zhang J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20100403 PL - England TA - Toxicol In Vitro JT - Toxicology in vitro : an international journal published in association with BIBRA JID - 8712158 RN - 0 (ABCG1 protein, human) RN - 0 (ATP Binding Cassette Transporter, Subfamily G, Member 1) RN - 0 (ATP-Binding Cassette Transporters) RN - 0 (Anticonvulsants) RN - 0 (Fatty Acids) RN - 614OI1Z5WI (Valproic Acid) RN - EC 1.1.1.27 (L-Lactate Dehydrogenase) RN - EC 1.14.14.1 (Cytochrome P-450 CYP1A1) RN - EC 2.3.1.21 (Carnitine O-Palmitoyltransferase) RN - EC 2.6.1.1 (Aspartate Aminotransferases) RN - EC 2.6.1.2 (Alanine Transaminase) SB - IM MH - ATP Binding Cassette Transporter, Subfamily G, Member 1 MH - ATP-Binding Cassette Transporters/metabolism MH - Alanine Transaminase/metabolism MH - Anticonvulsants/*toxicity MH - Aspartate Aminotransferases/metabolism MH - Carnitine O-Palmitoyltransferase/metabolism MH - Cell Survival/drug effects MH - Cytochrome P-450 CYP1A1/metabolism MH - Fatty Acids/*metabolism MH - Gene Expression/drug effects MH - Hep G2 Cells MH - Humans MH - L-Lactate Dehydrogenase/metabolism MH - Lipid Metabolism/*drug effects MH - Liver/*drug effects/metabolism MH - Toxicity Tests MH - Valproic Acid/*toxicity EDAT- 2010/04/08 06:00 MHDA- 2010/06/18 06:00 CRDT- 2010/04/08 06:00 PHST- 2009/10/10 00:00 [received] PHST- 2010/03/08 00:00 [revised] PHST- 2010/03/25 00:00 [accepted] PHST- 2010/04/08 06:00 [entrez] PHST- 2010/04/08 06:00 [pubmed] PHST- 2010/06/18 06:00 [medline] AID - S0887-2333(10)00078-0 [pii] AID - 10.1016/j.tiv.2010.03.014 [doi] PST - ppublish SO - Toxicol In Vitro. 2010 Jun;24(4):1086-91. doi: 10.1016/j.tiv.2010.03.014. Epub 2010 Apr 3.