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Untargeted LC-MS metabolomics approach reveals metabolic changes in genetically improved farmed tilapia (Oreochromis niloticus) with fatty liver induced by a high-fat diet

文献类型： 外文期刊

作者： Tao, Yi-Fan 1 ; Qiang, Jun 1 ; He, Jie 1 ; Zhu, Hao-Jun 1 ; Bao, Jing-Wen 1 ; Xu, Pao 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Minist Agr, Key Lab Freshwater Fisheries & Germplasm Resource, Wuxi 214081, Jiangsu, Peoples R China

关键词： fatty liver; GIFT; high-fat diet; metabolic change; metabolomic analysis

期刊名称：AQUACULTURE RESEARCH （ 影响因子：2.082； 五年影响因子：2.415 ）

ISSN： 1355-557X

年卷期：

页码：

收录情况： SCI

摘要： Hepatic steatosis commonly occurs in intensively farmed tilapia. This disease is harmful to fish growth and health, but knowledge of the metabolic changes in tilapia with fatty liver is limited. In the present study, we compared male genetically improved farmed tilapia (GIFT,Oreochromis niloticus) fed a high-fat diet (HFD) with those fed a normal-fat diet (NFD) for 8 weeks using LC-MS-based hepatic metabolomic assays and traditional nutritional assessments. Juvenile GIFT fed a HFD accumulated more fat in the liver than did those fed a NFD. The metabolomic analyses revealed 36 differentially accumulated metabolites between the two groups, and these metabolites were involved in 25 signalling pathways. Our results indicate that development of fatty liver severely impairs hepatic lipid metabolism, leading to blockage of the TCA cycle and further disruptions to protein and carbohydrate metabolism in GIFT. These physiological changes may be related to the lower growth rate of GIFT fed a HFD. Overall, our results reveal the details of metabolic disorders in GIFT fed a HFD and enhance our knowledge of the mechanism of fatty liver formation in GIFT.

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