Changes in free amino acid synthesis in the perfused liver of an air-breathing walking catfish,Clarias batrachus infused with ammonium chloride: A strategy to adapt under hyperammonia stress

Saha, Nirmalendu; Dutta, Supiya; Häussinger, Dieter

doi:10.1002/(sici)1097-010x(20000101)286:1<13::aid-jez2>3.0.co;2-x

Cited by 43 publications

(16 citation statements)

References 30 publications

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“…Taurine cannot be part of translated peptide chains (Bittner, Win, & Gupta, ; Lähdesmäki, ), but regulated the size of free amino acid pool (Boonyoung et al., ; Matsunari, Furuita, et al., ; Matsunari, Yamamoto, et al., ; Wang, ; Zhou et al., ). Some amino acids, such as glycine and arginine, involved in osmoregulation (Li, Mai, Trushenski, & Wu, ) of aquatic animals, could be spared by taurine to participate in protein synthesis (Ballatori & Boyer, ; Huxtable, ; King, Beyenbach, & Goldstein, ; Saha, Dutta, & Bhattacharjee, ; Saha, Dutta, & Haussinger, ; Takagi, Murata, Goto, Hayashi, et al., ). However, excessive taurine supplementation caused excessive loss of free amino acids and reduced the utilization efficiency of amino acids in fish (Matsunari, Furuita, et al., ; Zhou et al., ).…”

Section: Discussionmentioning

confidence: 99%

The tolerance and safety assessment of taurine as additive in a marine carnivorous fish, Scophthalmus maximus L.

Liu

Yang

et al. 2017

Aquacult Nutr

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The effects of dietary taurine on growth performance, liver and intestine morphology, serum physiological and antioxidant parameters, serum thyroid hormone level, muscle taurine content and fatty acid composition of turbot were first evaluated, for the safe utilization in marine fish feed and for human food safety. Four experimental diets were formulated to contain 0, 10, 50 and 100 g/kg taurine. Each diet was randomly assigned to six replicates of 30 juvenile turbot (initial mean weight of 7.46 g). The feeding trial lasted for 10 weeks. The growth performance of fish was significantly enhanced by 10 g/kg dietary taurine. The integrity of the distal intestine was impaired and the absorptive surface was found to be significantly reduced by 100 g/kg dietary taurine. The obvious pathological changes in liver were observed in fish fed 100 g/kg taurine. Dietary taurine with 10 and 50 g/kg significantly increased the activities of serum superoxide dismutase, lysozyme and thyroid hormone. The taurine content in muscle was found to be significantly increased by dietary taurine; however, no significant differences were observed among taurine‐supplemented treatments. This study suggested that 10 g/kg taurine was safe in turbot feed, and fivefold of safety margin was obtained.

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Section: Discussionmentioning

confidence: 99%

The tolerance and safety assessment of taurine as additive in a marine carnivorous fish, Scophthalmus maximus L.

Liu

Yang

et al. 2017

Aquacult Nutr

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“…Because taurine comprises 30–>50% of the free amino acid pool in blood, muscles and brains of animals, including fish (Jacobsen & Smith ; Saha et al . , ), it may play a significant osmoregulatory role in the cellular and central nervous system of marine fish species such as flounder (( Pseudopleuronectes americanus ) (King et al . ) and skate ( Raja erinacea ) (Ballatori & Boyer ) as well as freshwater fish such as walking catfish ( Clarias batrachus ) (Saha et al .…”

Section: Physiological Functions Of Taurine In Fishmentioning

confidence: 99%

“…) and skate ( Raja erinacea ) (Ballatori & Boyer ) as well as freshwater fish such as walking catfish ( Clarias batrachus ) (Saha et al . ), tilapia and carps (Takeuchi et al . , ).…”

Section: Physiological Functions Of Taurine In Fishmentioning

confidence: 99%

Is dietary taurine supplementation beneficial for farmed fish and shrimp? a comprehensive review

El‐Sayed

2013

Reviews in Aquaculture

135

106

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Taurine is a neutral β‐amino acid derived from the metabolism of sulphur‐containing amino acids. It is present in high concentrations in animal tissues, especially heart, retina, skeletal muscle, brain, large intestines, plasma, blood cells and leucocytes. Therefore, this amino acid plays significant roles in many physiological functions, including membrane stabilization, antioxidation, detoxification, modulation of immune response, calcium transport, myocardial contractility, retina development, bile acid metabolism, osmotic regulation and endocrine functions. Historically, taurine has not been considered as an essential nutrient for fish. However, recent studies have indicated that taurine synthesis widely differs between fish species and demonstrated that it plays a key role in aquaculture and nutrition of freshwater and marine fish and shrimp. Animal proteins are rich in taurine, whereas plant proteins are taurine‐deficient. Therefore, fish fed plant protein–based food may require exogenous taurine for maintaining their physiological functions. Nevertheless, taurine may be conditionally indispensable for fish and shrimp, depending on dietary protein source, fish species and size, feeding habits, previous histories and the rate of metabolism of its precursors, namely cysteine and methionine. It is my belief that taurine functions in, and benefits for, farmed fish and shrimp are now more than worthy of critical review and analysis. This review summarizes the current knowledge on the roles of taurine in fish, particularly farmed fish and shrimp, with emphasis on taurine structure and biosynthesis, physiological functions, the effects of dietary taurine on fish performance and health and live food enrichment with taurine.

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“…It has been demonstrated in mammals that hepatic GDH mRNA expression is up-regulated in the pericentral zones, resulting in increases in GDH activity and consequently glutamate production in support of the increased detoxification of ammonia to glutamine after feeding (Boon et al, 1999). In fish, such as the scale-less carp Gymnocypris przewalskii (Wang et al, 2003) and the air-breathing catfish Clarias batrachus (Saha et al, 2000), hepatic Gdh activities are up-regulated following exposure to ammonia. Thus, the initial up-regulation of hepatic gdh1a mRNA expression in the liver of M. albus exposed to terrestrial conditions or ammonia could be an adaptation to increase glutamate synthesis in preparation of the detoxification of ammonia to glutamine.…”

Section: Discussionmentioning

confidence: 99%

Gene Cloning and mRNA Expression of Glutamate Dehydrogenase in the Liver, Brain, and Intestine of the Swamp Eel, Monopterus albus (Zuiew), Exposed to Freshwater, Terrestrial Conditions, Environmental Ammonia, or Salinity Stress

Tok¹,

Chew²,

Ip³

2011

Front. Physio.

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The swamp eel, Monopterus albus, is an obligatory air-breathing teleost which can undergo long period of emersion, has high environmental and tissue ammonia tolerance, and can survive in brackish water. We obtained a cDNA sequence of glutamate dehydrogenase (gdh), which consisted of a 133-bp 5′ UTR, a complete coding sequence region spanning 1629 bp and a 3′ UTR of approximately 717 bp, from the liver, intestine, and brain of M. albus. The translated Gdh amino acid sequence had 542 residues, and it formed a monophyletic clade with Bostrychus sinensis Gdh1a, Tetraodon nigroviridis Gdh1a, Chaenocephalus aceratus Gdh1a, Salmo salar Gdh1a1 and Gdh1a2, and O. mykiss Gdh1a. One day of exposure to terrestrial conditions or 75 mmol l−1 NH4Cl, but not to water at salinity 20, resulted in a significant increase in mRNA expression of gdh1a and Gdh amination activity in the liver of M. albus. However, exposure to brackish water, but not to terrestrial conditions or 75 mmol l−1 NH4Cl, led to a significant increase in the mRNA expression of gdh1a and Gdh amination activity in the intestine. By contrast, all the three experimental conditions had no significant effects on the mRNA expression of gdh1a in the brain of M. albus, despite a significant decrease in the Gdh amination activity in the brain of fish exposed to 75 mmol l−1 NH4Cl for 6 days. Our results indicate for the first time that the mRNA expression of gdh1a was differentially up-regulated in the liver and intestine of M. albus in response to ammonia toxicity and salinity stress, respectively. The increases in mRNA expression of gdh1a and Gdh amination activity would probably lead to an increase in glutamate production in support of increased glutamine synthesis for the purpose of ammonia detoxification or cell volume regulation under these two different environmental conditions.

show abstract

Changes in free amino acid synthesis in the perfused liver of an air-breathing walking catfish,Clarias batrachus infused with ammonium chloride: A strategy to adapt under hyperammonia stress

Cited by 43 publications

References 30 publications

The tolerance and safety assessment of taurine as additive in a marine carnivorous fish, Scophthalmus maximus L.

The tolerance and safety assessment of taurine as additive in a marine carnivorous fish, Scophthalmus maximus L.

Is dietary taurine supplementation beneficial for farmed fish and shrimp? a comprehensive review

Gene Cloning and mRNA Expression of Glutamate Dehydrogenase in the Liver, Brain, and Intestine of the Swamp Eel, Monopterus albus (Zuiew), Exposed to Freshwater, Terrestrial Conditions, Environmental Ammonia, or Salinity Stress

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