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Liu YC, Limbu SM, Wang JG, Wang M, Chen LQ, Qiao F, Luo Y, Zhang ML, Du ZY. Dietary docosahexaenoic acid reduces fat deposition and alleviates liver damage induced by D-galactosamine and lipopolysaccharides in Nile tilapia (Oreochromis niloticus). Comp Biochem Physiol C Toxicol Pharmacol 2023; 268:109603. [PMID: 36906246 DOI: 10.1016/j.cbpc.2023.109603] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 02/13/2023] [Accepted: 03/06/2023] [Indexed: 03/11/2023]
Abstract
Liver health is important to maintain survival and growth of fish. Currently, the role of dietary docosahexaenoic acid (DHA) in improving fish liver health is largely unknown. This study investigated the role of DHA supplementation in fat deposition and liver damage caused by D-galactosamine (D-GalN) and lipopolysaccharides (LPS) in Nile tilapia (Oreochromis niloticus). Four diets were formulated as control diet (Con), Con supplemented with 1 % DHA, 2 % DHA and 4 % DHA diets, respectively. The diets were fed to 25 Nile tilapia (2.0 ± 0.1 g, average initial weight) in triplicates for four weeks. After the four weeks, 20 fish in each treatment were randomly selected and injected with a mixture of 500 mg D-GalN and 10 μL LPS per mL to induce acute liver injury. The results showed that the Nile tilapia fed on DHA diets decreased visceral somatic index, liver lipid content and serum and liver triglyceride concentrations than those fed on the Con diet. Moreover, after D-GalN/LPS injection, the fish fed on DHA diets decreased alanine aminotransferase and aspartate transaminase activities in the serum. The results of liver qPCR and transcriptomics assays together showed that the DHA diets feeding improved liver health by downregulating the expression of the genes related to toll-like receptor 4 (TLR4) signaling pathway, inflammation and apoptosis. This study indicates that DHA supplementation in Nile tilapia alleviates the liver damage caused by D-GalN/LPS through increasing lipid catabolism, decreasing lipogenesis, TLR4 signaling pathway, inflammation, and apoptosis. Our study provides novel knowledge on the role of DHA in improving liver health in cultured aquatic animals for sustainable aquaculture.
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Affiliation(s)
- Yi-Chan Liu
- LANEH, School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Samwel Mchele Limbu
- Department of Aquaculture Technology, School of Aquatic Sciences and Fisheries Technology, University of Dar es Salaam, P. O. Box 60091, Dar es Salaam, Tanzania; UDSM-ECNU Joint Research Center for Aquaculture and Fish Biology (JRCAFB), Dar es Salaam, Tanzania
| | - Jin-Gang Wang
- LANEH, School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Mai Wang
- LANEH, School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Li-Qiao Chen
- LANEH, School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Fang Qiao
- LANEH, School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Yuan Luo
- LANEH, School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Mei-Ling Zhang
- LANEH, School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Zhen-Yu Du
- LANEH, School of Life Sciences, East China Normal University, Shanghai, PR China; ECNU-UDSM Joint Research Center for Aquaculture and Fish Biology (JRCAFB), Shanghai, PR China.
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Liu XJ, Xie L, Du K, Liu C, Zhang NP, Gu CJ, Wang Y, Abdelmalek MF, Dong WY, Liu XP, Niu C, Yang C, Diehl AM, Wu J. Succinate-GPR-91 receptor signalling is responsible for nonalcoholic steatohepatitis-associated fibrosis: Effects of DHA supplementation. Liver Int 2020; 40:830-843. [PMID: 31903720 PMCID: PMC9990138 DOI: 10.1111/liv.14370] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 12/02/2019] [Accepted: 12/30/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND AIMS Treatment of non-alcoholic steatohepatitis (NASH) is challenging, because suppressing fibrotic progression has not been achieved consistently by drug candidates currently in clinical trials. The aim of this study was to investigate the molecular interplays underlying NASH-associated fibrosis in a mouse NASH model and human specimens. METHODS Mice were divided into 4 groups: Controls; NASH (high fat/Calorie diet plus high fructose and glucose in drinking water, HFCD-HF/G) for 16 weeks; HFCD-HF/G plus docosahexaenoic acid (DHA) for 16 or 8 weeks. RESULTS Along with NASH progression, fibrotic deposition was documented in HFCD-HF/G-fed mice. Liver succinate content was significantly increased along with decreased expression of succinate dehydrogenase-A (SDH-A) in these mice; whereas, GPR-91 receptor expression was much enhanced in histology compared to control mice, and co-localized histologically with hepatic stellate cells (HSCs). Succinate content was increased in fatty acid-overloaded primary hepatocytes with significant oxidant stress and lipotoxicity. Exposure to succinate led to up-regulation of GPR-91 receptor in primary and immortalized HSCs. In contrast, suppression of GPR-91 receptor expression abolished succinate stimulatory role in GPR-91 expression and extracellular matrix production in HSCs. All these changes were minimized or abrogated by DHA supplementation in vivo or in vitro. Moreover, GPR-91 receptor expression correlates with severity of fibrosis in human NASH biopsy specimens. CONCLUSION Succinate accumulation in steatotoic hepatocytes may result in HSC activation through GPR-91 receptor signalling in NASH progression, and the cross-talk between hepatocytes and HSC through GPR-91 signalling is most likely to be the molecular basis of fibrogenesis in NASH.
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Affiliation(s)
- Xue-Jing Liu
- Department of Medical Microbiology, MOE/NHC/CAMS Key Laboratory of Medical Molecular Virology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Li Xie
- Department of Medical Microbiology, MOE/NHC/CAMS Key Laboratory of Medical Molecular Virology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Kuo Du
- Division of Gastroenterology, Department of Medicine, Duke University Medical Center, Durham, NC, USA
| | - Chang Liu
- Department of Medical Microbiology, MOE/NHC/CAMS Key Laboratory of Medical Molecular Virology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Ning-Ping Zhang
- Shanghai Institute of Liver Diseases, Fudan University Shanghai Medical College, Shanghai, China.,Dept. of Gastroenterology & Hepatology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Chen-Jian Gu
- Department of Medical Microbiology, MOE/NHC/CAMS Key Laboratory of Medical Molecular Virology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Ying Wang
- Division of Gastroenterology, Department of Medicine, Duke University Medical Center, Durham, NC, USA
| | - Manal F Abdelmalek
- Division of Gastroenterology, Department of Medicine, Duke University Medical Center, Durham, NC, USA
| | - Wen-Yue Dong
- Shanghai Institute of Plant Physiology and Ecology, Shanghai Institutes of Biologic Sciences (SIBS), Chinese Academy of Sciences, Shanghai, China.,University of Chinese Academy of Science, Beijing, China
| | - Xiu-Ping Liu
- Department of Pathology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Chen Niu
- Department of Medical Microbiology, MOE/NHC/CAMS Key Laboratory of Medical Molecular Virology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Chen Yang
- Shanghai Institute of Plant Physiology and Ecology, Shanghai Institutes of Biologic Sciences (SIBS), Chinese Academy of Sciences, Shanghai, China
| | - Anna Mae Diehl
- Division of Gastroenterology, Department of Medicine, Duke University Medical Center, Durham, NC, USA
| | - Jian Wu
- Department of Medical Microbiology, MOE/NHC/CAMS Key Laboratory of Medical Molecular Virology, School of Basic Medical Sciences, Fudan University, Shanghai, China.,Shanghai Institute of Liver Diseases, Fudan University Shanghai Medical College, Shanghai, China.,Dept. of Gastroenterology & Hepatology, Zhongshan Hospital, Fudan University, Shanghai, China
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Adkins Y, Belda BJ, Pedersen TL, Fedor DM, Mackey BE, Newman JW, Kelley DS. Dietary Docosahexaenoic Acid and trans-10, cis-12-Conjugated Linoleic Acid Differentially Alter Oxylipin Profiles in Mouse Periuterine Adipose Tissue. Lipids 2017; 52:399-413. [DOI: 10.1007/s11745-017-4252-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Accepted: 04/04/2017] [Indexed: 02/08/2023]
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