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Wang BL, Zhang CW, Wang L, Tang KL, Tanaka N, Gonzalez FJ, Xu Y, Fang ZZ. Lipidomics reveal aryl hydrocarbon receptor (Ahr)-regulated lipid metabolic pathway in alpha-naphthyl isothiocyanate (ANIT)-induced intrahepatic cholestasis. Xenobiotica 2018; 49:591-601. [PMID: 29737914 DOI: 10.1080/00498254.2018.1467065] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
1. Ultra-performance liquid chromatography coupled with electrospray ionization quadrupole mass spectrometry (UPLC-ESI-QTOF MS)-based lipidomics was employed to elucidate new mechanism of alpha-naphthyl isothiocyanate (ANIT)-induced intrahepatic cholestasis in mice. 2. Multiple lipid components significantly increased in ANIT-induced intrahepatic cholestasis, including PC 16:0, 20:4, PC 16:0, 22:6, PC 16:0, 18:2, LPC 18:2, PC 18:2, LPC 18:1, PC 18:1, 14:0, SM 18:1, 16:0, oleoylcarnitine and palmitoylcarnitine. This alteration of lipid profile was induced by the changed expression of genes choline kinase (Chk) a, sphingomyelin phosphodiesterase (SMPD) and stearoyl-coenzyme A desaturase 1 (SCD1). 3. Knockout of aryl hydrocarbon receptor (Ahr) in mice can significantly reverse ANIT-induced intrahepatic cholestasis, as indicated by lowered ALT, AST and ALP activity, and liver histology. Aryl hydrocarbon receptor knockout significantly reversed ANIT-induced lipid metabolism alteration through regulating the expression of Chka. 4. In conclusion, this study demonstrated ANIT-induced lipid metabolism disruption might be the potential pathogenesis of ANIT-induced intrahepatic cholestasis in mice.
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Affiliation(s)
- Bao-Long Wang
- a Department of Urology , The Second Hospital of Tianjin Medical University, Tianjin Institute of Urology , Tianjin , China.,b Department of Urology , General Hospital of Tianjin Medical University , Tianjin , China
| | - Chang-Wen Zhang
- a Department of Urology , The Second Hospital of Tianjin Medical University, Tianjin Institute of Urology , Tianjin , China
| | - Liang Wang
- b Department of Urology , General Hospital of Tianjin Medical University , Tianjin , China
| | - Kun-Long Tang
- b Department of Urology , General Hospital of Tianjin Medical University , Tianjin , China
| | - Naoki Tanaka
- c Laboratory of Metabolism , Center for Cancer Research, National Institutes of Health , Bethesda , MD , USA.,d Department of Metabolic Regulation , Shinshu University Graduate School of Medicine , Matsumoto , Japan
| | - Frank J Gonzalez
- c Laboratory of Metabolism , Center for Cancer Research, National Institutes of Health , Bethesda , MD , USA
| | - Yong Xu
- a Department of Urology , The Second Hospital of Tianjin Medical University, Tianjin Institute of Urology , Tianjin , China
| | - Zhong-Ze Fang
- c Laboratory of Metabolism , Center for Cancer Research, National Institutes of Health , Bethesda , MD , USA.,e Department of Toxicology, School of Public Health , Tianjin Medical University , Tianjin , China.,f Key Laboratory of Liaoning Tumor Clinical Metabolomics (KLLTCM) , Jinzhou , China.,g Department of Immunology, Tianjin Key Laboratory of Cellular and Molecular Immunology , Tianjin Medical University , Tianjin , China
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Protective Effect of Brazilian Propolis against Liver Damage with Cholestasis in Rats Treated with α-Naphthylisothiocyanate. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 2013:302720. [PMID: 23710219 PMCID: PMC3654703 DOI: 10.1155/2013/302720] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Revised: 03/24/2013] [Accepted: 03/25/2013] [Indexed: 01/22/2023]
Abstract
We examined the protective effect of Brazilian propolis against liver damage with cholestasis in rats treated with α-naphthylisothiocyanate (ANIT) in comparison with that of vitamin E (VE). Rats orally received Brazilian propolis ethanol extract (BPEE) (25, 50, or 100 mg/kg), VE (250 mg/kg) or vehicle at 12 h after intraperitoneal injection of ANIT (75 mg/kg) and were killed 24 h after the injection. Vehicle-treated rats showed liver cell damage and cholestasis, judging from the levels of serum marker enzymes and components. The vehicle group had increased serum total cholesterol, triglyceride, phospholipid, and lipid peroxide levels, increased hepatic lipid peroxide, reduced glutathione, and ascorbic acid levels and myeloperoxidase activity, and decreased hepatic superoxide dismutase activity. BPEE (50 mg/kg) administered to ANIT-treated rats prevented liver cell damage and cholestasis and attenuated these serum and hepatic biochemical changes except hepatic ascorbic acid, although administered BPEE (25 or 100 mg/kg) was less effective. VE administered to ANIT-treated rats prevented liver cell damage, but not cholestasis, and attenuated increased serum lipid peroxide level, increased hepatic lipid peroxide level and myeloperoxidase activity, and decreased hepatic superoxide dismutase activity. These results indicate that BPEE protects against ANIT-induced liver damage with cholestasis in rats more effectively than VE.
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Moreira C, Souza S, Barini A, Araújo E, Fioravanti M. Serum γ-glutamyltransferase activity as an indicator of chronic liver injury in cattle with no clinical signs. ARQ BRAS MED VET ZOO 2012. [DOI: 10.1590/s0102-09352012000600001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
This study aimed to determine the power of the serum aspartate aminotransferase (AST) and gamma-glutamyltransferasase (GGT) activities and of the albumin and cholesterol dosages for detecting hepatic histopathological injuries. A total of 220 healthy male Nelore cattle that had been extensively bred were evaluated. Blood and liver samples were collected on the day of slaughter for biochemical and histopathological tests. The results showed that the sensitivity to AST, GGT, albumin, and cholesterol tests were respectively 22.4%, 22.4%, 36%, and 37.2%. The specificity of AST, GGT, albumin, and cholesterol tests was respectively 78.8%, 90.4%, 75.6%, and 68.3%. In short, the detection of minor liver injuries through biochemical tests is limited; however, the high specificity of the GGT allows its use as an indicator of hepatic chronic injuries in cattle herds.
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Abstract
Schizophrenia is one of the most severe psychiatric disorders affecting 1% of the world population. There is yet no empirical method to validate the diagnosis of the disease. The identification of an underlying molecular alteration could lead to an improved disease understanding and may yield an objective panel of biomarkers to aid in the diagnosis of this devastating disease. Presented is the largest reported liquid chromatography-mass spectrometry-based proteomic profiling study investigating serum samples taken from first-onset drug-naive patients compared with samples collected from healthy volunteers. The results of this large-scale study are presented along with enzyme-linked immunosorbent assay-based validation data.
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Ohta Y, Kongo-Nishimura M, Imai Y, Kitagawa A. Melatonin attenuates disruption of serum cholesterol status in rats with a single alpha-naphthylisothiocyanate treatment. J Pineal Res 2007; 42:159-65. [PMID: 17286748 DOI: 10.1111/j.1600-079x.2006.00397.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The present study was performed to examine whether melatonin attenuates disruption of serum cholesterol status in rats treated once with alpha-naphthylisothiocyanate (ANIT). In the serum of rats treated with ANIT (75 mg/kg, i.p.), increases in total cholesterol, free cholesterol (F-Chol), low-density lipoprotein cholesterol, very low-density lipoprotein cholesterol, and total bile acid concentrations and a decrease in the ratio of esterified cholesterol concentration to F-Chol concentration occurred 24 hr, but not 12 hr, after the treatment. In the liver of ANIT-treated rats, a decrease in cholesterol concentration and an increase in total bile acid concentration occurred 24 hr, after 12 hr, after the treatment. When melatonin (10 or 100 mg/kg, p.o.) was administered to ANIT-treated rats at 12 hr after the treatment, all these changes found in the serum and liver at 24 hr after the treatment were significantly attenuated at the higher dose. Melatonin (100 mg/kg) administered to ANIT-untreated rats in the same manner increased the serum F-Chol and high-density lipoprotein cholesterol concentrations significantly. These results indicate that orally administered melatonin attenuates the disruption of serum cholesterol status in rats treated once with ANIT possibly by maintaining cholesterol metabolism and transport in the serum and liver.
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Affiliation(s)
- Yoshiji Ohta
- Department of Chemistry, School of Medicine, Fujita Health University, Toyoake, Aichi, Japan.
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