PMID- 27173049 OWN - NLM STAT- MEDLINE DCOM- 20170323 LR - 20211203 IS - 1618-0631 (Electronic) IS - 0344-0338 (Linking) VI - 212 IP - 6 DP - 2016 Jun TI - ER stress contributes to alpha-naphthyl isothiocyanate-induced liver injury with cholestasis in mice. PG - 560-7 LID - S0344-0338(16)30081-4 [pii] LID - 10.1016/j.prp.2016.05.001 [doi] AB - Endoplasmic reticulum (ER) stress is involved in the development of several liver diseases and tumors. This study investigated the underlying mechanisms of alpha-naphthyl isothiocyanate (ANIT)-induced liver injury with cholestasis in mice and found ER stress contributes to the injury. All animals were randomly divided into three groups. In the ANIT-intoxicated group, mice were intragastrically given 100mg/kg ANIT (dissolved in corn oil), while the other groups received an equal volume of vehicle as control. After 24 and 48h of ANIT administration, blood samples and liver tissues of all animals were collected for serum biochemistry and hepatic histopathological examinations to evaluate liver injuries with cholestasis. Hepatocellular apoptosis was assessed by the terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) assay. The expression of hepatic ER stress-related markers was determined by real-time PCR, immunohistochemical assay and Western blot. ANIT was found to significantly induce liver injury with cholestasis compared with control mice as evidenced by the increase of serum transaminases and total bilirubin (TBil), and histopathological changes in mice. ANIT remarkably induced hepatocellular apoptosis, upregulated the expression of caspase-9 and cytochrome c, and inhibited the gene and protein expression of proliferating cell nuclear antigen (PCNA). The gene expression of ER stress-related markers, including glucose-regulated protein 78 (GRP78), protein kinase R-like ER kinase (PERK), eukaryotic initiation factor 2alpha (eIF2alpha), inositol requiring enzyme-1alpha (IRE-1alpha) and activating transcription factor 6 (ATF6) was upregulated by ANIT in mice. ANIT also upregulated the protein expression of GRP78 and activated the phosphorylation of IRE1. These results suggested that ANIT induced liver injury with cholestasis partly due to its ability to activate the ER stress pathway. CI - Copyright (c) 2016 Elsevier GmbH. All rights reserved. FAU - Yao, Xiaomin AU - Yao X AD - Faculty of Pharmacy, Zhejiang Pharmaceutical College, Ningbo, 315100, China. Electronic address: 630088408@qq.com. FAU - Li, Yue AU - Li Y AD - Beijing Centre For Physical & Chemical Analysis, Beijing, 100050, China. FAU - Cheng, Xiaoyan AU - Cheng X AD - Beijing Centre For Physical & Chemical Analysis, Beijing, 100050, China. FAU - Li, Hongwei AU - Li H AD - Faculty of Pharmacy, Zhejiang Pharmaceutical College, Ningbo, 315100, China. LA - eng PT - Journal Article DEP - 20160503 PL - Germany TA - Pathol Res Pract JT - Pathology, research and practice JID - 7806109 RN - 0 (Endoplasmic Reticulum Chaperone BiP) RN - 0 (Hspa5 protein, mouse) RN - 0 (Isocyanates) RN - 0 (Naphthalenes) RN - 5LH2P0691E (alpha-naphthyl isocyanate) RN - 9007-43-6 (Cytochromes c) RN - EC 3.4.22.- (Caspase 9) SB - IM MH - Animals MH - Apoptosis/physiology MH - Caspase 9/metabolism MH - Chemical and Drug Induced Liver Injury/complications/*metabolism/pathology MH - Cholestasis/chemically induced/complications/*metabolism/pathology MH - Cytochromes c/metabolism MH - Endoplasmic Reticulum Chaperone BiP MH - Endoplasmic Reticulum Stress/*physiology MH - Isocyanates MH - Liver/*metabolism/pathology MH - Male MH - Mice MH - Mice, Inbred ICR MH - Naphthalenes OTO - NOTNLM OT - Alpha-naphthyl isothiocyanate OT - Apoptosis OT - Cholestasis OT - ER stress OT - Liver injury EDAT- 2016/05/14 06:00 MHDA- 2017/03/24 06:00 CRDT- 2016/05/14 06:00 PHST- 2016/02/18 00:00 [received] PHST- 2016/04/28 00:00 [revised] PHST- 2016/05/02 00:00 [accepted] PHST- 2016/05/14 06:00 [entrez] PHST- 2016/05/14 06:00 [pubmed] PHST- 2017/03/24 06:00 [medline] AID - S0344-0338(16)30081-4 [pii] AID - 10.1016/j.prp.2016.05.001 [doi] PST - ppublish SO - Pathol Res Pract. 2016 Jun;212(6):560-7. doi: 10.1016/j.prp.2016.05.001. Epub 2016 May 3.