Physiological responses to heat stress in the liver of rainbow trout (Oncorhynchus mykiss) revealed by UPLC-QTOF-MS metabolomics and biochemical assays
文献类型： 外文期刊
作者： Li, Shanwei 1 ; Liu, Yingjie 1 ; Li, Bolun 3 ; Ding, Lu 1 ; Wei, Xiaofeng 1 ; Wang, Peng 1 ; Chen, Zhongxiang 1 ; Han, Shicheng 1 ; Huang, Tianqing 1 ; Wang, Bingqian 1 ; Sun, Yanchun 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Heilongjiang River Fisheries Res Inst, Lab Qual & Safety Risk Assessment Aquat Prod Harbi, Minist Agr & Rural Areas, Harbin 150070, Peoples R China
2.Shanghai Ocean Univ, Coll Food Sci & Technol, Shanghai 201306, Peoples R China
3.Northeast Agr Univ, Coll Life Sci, Harbin 150030, Heilongjiang, Peoples R China
4.Dalian Ocean Univ, Coll Food Sci & Engn, Dalian 116023, Peoples R China
关键词： Heat stress; Rainbow trout; Metabolomics; Antioxidant defense; Immune response
期刊名称：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY （ 影响因子：7.129； 五年影响因子：7.284 ）
ISSN： 0147-6513
年卷期： 2022 年 242 卷
页码：
收录情况： SCI
摘要： Rainbow trout (Oncorhynchus mykiss) is one of the world's most widely farmed cold-water fish. However, the rise in water temperature caused by global warming has seriously restricted the development of rainbow trout aquaculture. In this study, we investigated the physiological responses in the liver of rainbow trout exposed to 20 degrees C and 24 degrees C and returning to the initial temperature (14 degrees C) by combining biochemical analyses and UPLC-QTOF-MS metabolomics. The results of the biochemical analysis showed that serum aminotransferase, lysozyme, total bilirubin, alkaline phosphatase and liver superoxide dismutase, glutathione peroxidase, and malondialde-hyde in rainbow trout under heat stress changed significantly. Even after the temperature recovery, some of the above indicators were still affected. Compared to the control group, 115, 130, and 121 differentially expressed metabolites were identified in the 20 degrees C, 24 degrees C, and recovery groups, respectively. Further pathway enrichment of these metabolites revealed that heat stress mainly affected the linoleic acid metabolism, alpha-linolenic acid metabolism, glycerophospholipid metabolism, and sphingolipid metabolism in the liver of rainbow trout, and continuously affected these metabolic pathways during the recovery period. Notably, the enrichment of gluta-thione metabolic pathways was consistent with the changes in glutathione peroxidase in the biochemical results. The results above suggest that heat stress can induce immune responses and oxidative stress inside the rainbow trout. After temperature recovery, some of the hepatic functions of fish return to normal gradually. The biochemical analysis and UPLC-QTOF-MS metabolomics tools provide insight into the physiological regulation of rainbow trout in response to heat stress.
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