Effects of Saline-Alkaline Stress on Metabolome, Biochemical Parameters, and Histopathology in the Kidney of Crucian Carp (Carassius auratus)
文献类型： 外文期刊
作者： Ding, Lu 1 ; Liu, Yingjie 1 ; Wei, Xiaofeng 1 ; Geng, Chuanye 1 ; Liu, Wenzhi 1 ; Han, Lin 1 ; Yuan, Fangying 1 ; Wang, Peng 1 ; Sun, Yanchun 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Minist Agr & Rural Areas, Heilongjiang River Fisheries Res Inst, Lab Qual & Safety Risk Assessment Aquat Prod, Harbin 150070, Peoples R China
2.Shanghai Ocean Univ, Coll Food Sci & Technol, Dept Food Sci & Engn, Shanghai 201306, Peoples R China
3.Dalian Ocean Univ, Coll Food Sci & Engn, Dept Food Sci & Engn, Dalian 116023, Peoples R China
4.Harbin Univ Sci & Technol, Coll Mat & Chem Engn, Dept Chem Engn & Technol, Harbin 150080, Peoples R China
关键词： saline-alkaline stress; crucian carp; kidney; metabolomics; histopathology
期刊名称：METABOLITES （ 影响因子：4.1； 五年影响因子：4.5 ）
ISSN：
年卷期： 2023 年 13 卷 2 期
页码：
收录情况： SCI
摘要： The salinization of the water environment caused by human activities and global warming has increased which has brought great survival challenges to aquatic animals. Crucian carp (Carassius auratus) is an essential freshwater economic fish with superior adaptability to saline-alkali water. However, the physiological regulation mechanism of crucian carp adapting to saline-alkali stress remains still unclear. In this study, crucian carp were exposed to freshwater or 20, 40, and 60 mmol/L NaHCO3 water environments for 30 days, the effects of saline-alkali stress on the kidney were evaluated by histopathology, biochemical assays and metabolomics analysis from renal function, antioxidant capacity and metabolites level. Our results showed different degrees of kidney damage at different exposure concentrations, which were characterized by glomerular atrophy and swelling, renal tubular degranulation, obstruction and degeneration, renal interstitial edema, renal cell proliferation and necrosis. Saline-alkali stress could change the levels of several physiological parameters with renal function and antioxidant capacity, including creatinine (CREA), urea nitrogen (BUN), superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-Px) and malondialdehyde (MDA). In addition, metabolomics analysis showed that differential metabolites (DMs) were involved in various metabolic pathways, including phenylalanine, tyrosine, and tryptophan biosynthesis, aminoacyl-tRNA biosynthesis, purine metabolism, glycerophospholipid metabolism, sphingolipid metabolism, glycolysis/gluconeogenesis and the TCA cycle. In general, our study revealed that saline-alkaline stress could cause significant changes in renal function and metabolic profiles, and induce severe damage in the crucian carp kidney through destroying the anti-oxidant system and energy homeostasis, inhibiting protein and amino acid catabolism, as well as disordering purine metabolism and lipid metabolism. This study could contribute to a deeper understanding the adverse effects of saline-alkali stress on crucian carp kidney and the regulatory mechanism in the crucian carp of saline-alkali adaptation at the metabolic level.
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