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Metabolic responses in Scophthalmus maximus kidney subjected to thermal stress. 2020

Shuangshuang Yang, and Tingting Zhao, and Aijun Ma, and Zhihui Huang, and Zhifeng Liu, and Wenxiao Cui, and Jinsheng Zhang, and Chunyue Zhu, and Xiaoli Guo, and Chenhao Yuan
Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shandong Key Laboratory of Marine Fisheries Biotechnology and Genetic Breeding, Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao, 266071, China; Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266237, China.

Turbot (Scophthalmus maximus) is an economically important marine fish cultured in China. In this study, fish in the experimental group were exposed to four temperatures: 15, 20, 25 and 28 °C. Metabolomics analysis and quantitative real-time PCR were used to assess changes in metabolic profiling and gene expression associated with thermal stress. The results showed the levels of heat shock protein 70 (HSP70), heat shock protein 90 (HSP90), blood creatinine and cortisol in S. maximus were all significantly upregulated (P < 0.05), indicating a stress response at 25 °C or higher. Challenge with thermal stress significantly increased expression levels of succinate dehydrogenase (SDH), fructose-1, 6-bisphosphatase (FBPase), malate dehydrogenase (MDH), cytosolic phosphoenolpyruvate carboxykinase (cPEPCK), glucose-6-phosphatase (G6Pase) and aspartate aminotransferase (AST) (P < 0.05). However, there was no effect on the expression levels of lactate dehydrogenase (LDH), alanine aminotransferase (ALT) and mitochondrial phosphoenolpyruvate carboxykinase (mPEPCK). Moreover, high temperature decreased levels of glycogenic amino acids, including histidine, threonine, glutamine, phenylalanine, arginine, serine, tyrosine, methionine and isoleucine. These findings suggest a significant correlation between gene expression and regulation of carbohydrate and amino acid metabolism in heat-stressed S. maximus kidney. In addition, the maintenance of aerobic metabolism and activation of gluconeogenesis appeared to be a critical metabolic strategy in combating heat stress in turbot kidney.

UI MeSH Term Description Entries
D007668 Kidney Body organ that filters blood for the secretion of URINE and that regulates ion concentrations. Kidneys
D005412 Flatfishes Common name for the order Pleuronectiformes. A very distinctive group in that during development they become asymmetrical, i.e., one eye migrates to lie adjacent to the other. They swim on the eyeless side. FLOUNDER, sole, and turbot, along with several others, are included in this order. Pleuronectiformes,Scophthalmus maximus,Turbot,Psetta maxima,Solea,Turbots
D006360 Heat-Shock Proteins Proteins which are synthesized in eukaryotic organisms and bacteria in response to hyperthermia and other environmental stresses. They increase thermal tolerance and perform functions essential to cell survival under these conditions. Stress Protein,Stress Proteins,Heat-Shock Protein,Heat Shock Protein,Heat Shock Proteins,Protein, Stress
D006403 Hematologic Tests Tests used in the analysis of the hemic system. Blood Tests,Hematologic Test,Hematological Tests,Test, Hematologic,Tests, Hematologic,Blood Test,Hematological Test,Test, Blood,Test, Hematological,Tests, Blood,Tests, Hematological
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D055432 Metabolomics The systematic identification and quantitation of all the metabolic products of a cell, tissue, organ, or organism under varying conditions. The METABOLOME of a cell or organism is a dynamic collection of metabolites which represent its net response to current conditions. Metabonomics,Metabolomic,Metabonomic
D055442 Metabolome The dynamic collection of metabolites which represent a cell's or organism's net metabolic response to current conditions. Metabolic Profile,Metabolic Profiles,Metabolomes,Profile, Metabolic,Profiles, Metabolic
D060888 Real-Time Polymerase Chain Reaction Methods used for detecting the amplified DNA products from the polymerase chain reaction as they accumulate instead of at the end of the reaction. Kinetic Polymerase Chain Reaction,Quantitative Real-Time PCR,Quantitative Real-Time Polymerase Chain Reaction,Real-Time PCR,PCR, Quantitative Real-Time,PCR, Real-Time,PCRs, Quantitative Real-Time,PCRs, Real-Time,Quantitative Real Time PCR,Quantitative Real Time Polymerase Chain Reaction,Quantitative Real-Time PCRs,Real Time PCR,Real Time Polymerase Chain Reaction,Real-Time PCR, Quantitative,Real-Time PCRs,Real-Time PCRs, Quantitative
D018869 Heat-Shock Response A sequence of responses that occur when an organism is exposed to excessive heat. In humans, an increase in skin temperature triggers muscle relaxation, sweating, and vasodilation. Heat-Shock Reaction,Heat Shock,Heat Shock Stress,Heat Stress,Heat-Stress Reaction,Heat-Stress Response,Heat Shock Reaction,Heat Shock Response,Heat Shock Stresses,Heat Shocks,Heat Stress Reaction,Heat Stress Response,Heat Stresses,Heat-Shock Reactions,Heat-Shock Responses,Heat-Stress Reactions,Heat-Stress Responses,Shock, Heat,Stress, Heat,Stress, Heat Shock

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