Urea Synthesis
Postprandial increases in nitrogenous excretion and urea synthesis in the giant mudskipper Periophthalmodon schlosseri
... 58.1·µmol urea produced during the 24·h period post-feeding (see ...of urea, at most 39·µmol of urea could be produced through argininolysis, based on the highly unlikely assumption that both free ...
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The Chinese soft shelled turtle, Pelodiscus sinensis, decreases nitrogenous excretion, reduces urea synthesis and suppresses ammonia production during emersion
... decreased urea synthesis occurred concurrently with an unchanged or decreased rate of ammonia excretion during ...decreased urea synthesis and ammonia production could contribute to an overall ...
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Arginine, an indispensable amino acid for patients with inborn errors of urea synthesis
... argininosuccinate synthetase, and argininosuccinase. Within 15-68 h after arginine deprivation nitrogen accumulated as ammonium or glutamine or both, but glutamine was quantitatively the largest nitrogen accumulation ...
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Effect of bradykinin on nitric oxide production, urea synthesis and viability of rat hepatocyte cultures
... either to its direct cytotoxicity or its reaction with superox- ide to produce the toxic nitrogen metabolite peroxynitrite [19]. Oldenburg et al. [20], demonstrated in other cell types, like cardiomyocytes, that ...
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New Approaches to the Diagnosis and Treatment of Inborn Errors of Urea Synthesis
... strategy: (1) the intake of an optimal combination of protein, amino acids, and/or their nitrogen-free analogues will supply sufficient nitrogen and carbon skeletons of essential amino a[r] ...
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Urea synthesis after oral protein ingestion in man
... between urea production and serum amino acid concentration was linear (urea production in milligram urea nitrogen/kilogram lean body mass/hour = ...
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A comparison of the effects of environmental ammonia exposure on the Asian freshwater stingray Himantura signifer and the Amazonian freshwater stingray Potamotrygon motoro
... synthesizing urea for both water retention (osmoregulation) and ammonia detoxification prescribes a high rate of urea synthesis de novo, the former dictates the majority of the urea ...
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Studies on the Source of Urea Carbon
... Carbamyl glutamic acid, when tested in homogenate does not donate its carbon atoms to urea synthesis.(This paper). It exhibi t s the typical behavior of an amino a[r] ...
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Original Article ITE enhances the CYP450s activities of rat hepatocytes in a bioreactor
... Abstract: Actually all hepatocyte cell lines are lack of major cytochrome P450 (CYP)-related enzyme activities, mak- ing them unrepresentative of in vivo hepatocytes. To evaluate the effects of ...
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Induction of carbamoyl phosphate synthetase III and glutamine synthetase mRNA during confinement stress in gulf toadfish (Opsanus beta)
... CPSase I in amphibians and mammals does not require glutamine as its substrate, but instead feeds ammonia nitrogen directly into carbamoyl phosphate and urea synthesis (for a review, see Anderson, 1995b). ...
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Amphibious fishes: evolution and phenotypic plasticity
... to urea synthesis expend energy to increase the expression of OUC enzymes, but also pay maintenance costs to retain the regulatory machinery to induce this pathway even in water when it is not ...
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Maximal Rates of Excretion and Synthesis of Urea in Normal and Cirrhotic Subjects
... accelerate urea excretion, but prolong the duration of MRUE to 28 h (after dose ...Blood urea N (BUN) rises by 7-20 mg/100 ml during the first 8 h after dose C to E, and remains stable within ±5 mg/100 ml ...
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Synthesis and in vitro and in vivo evaluation of urea-based PSMA inhibitors with increased lipophilicity
... The PSMA inhibitors 1–9 (Fig. 1) were synthesized in a combined solution and solid-phase synthesis strategy. The acetylated three-amino acid peptides (amino acid spacer in Fig. 1) were assembled using ...
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ONE POT SYNTHESIS OF 3, 4 TETRAHYDROPYRIMIDINE 5 CARBOXYLATE USING LANTHANUM (III) CHLORIDE (LACL3 7H2O) AS A CATALYST
... direct synthesis of 3, 4- tetrahydropyrimidine-5-carboxylate using Lanthanum (III) chloride heptahydrate, one-step procedure from the Biginelli reaction under reflex condition an excellent yield in a ethanol ...
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Synthesis and Sintering Behaviour of ?Strontium? Substituted Pbzro3 by Urea-Nitrate Combustion Technique
... by the combustion of the corresponding metal nitrates-urea mixtures. In this process, Lead nitrate, strontium nitrate and zirconium nitrate were used as oxidizers and urea was used as fuel. The ...
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Complexes of Urea with Fe (II) Metal Ions and Synthesis of Fe(II) Complexes
... Metal ion analysis was carry out by the dissolution of solid complex in hot concentrated nitric acid. Further diluting with distilled water and filtered to remove the precipitated organic ligands . remaining solution was ...
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Evolution of urea transporters in vertebrates: adaptation to urea's multiple roles and metabolic sources
... generating urea in the OUC allows for the detoxification of noxious ammonia produced by amino acid ...and urea production to avoid ...synthesize urea), so these pathways are silenced near the time of ...
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Facile synthesis, molecular docking, and biological screening of 1,3 disubstituted urea derivatives
... that, urea carbonyl group that binds with phenolic hydrogen from Tyr465 and Tyr381; and carboxylate of Asp333 that binds with urea NH group resulted in steric clashes between the two aryl groups of the ...
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Synthesis, characterization and in vitro biological evaluation of urea analogue of tetrazolo[1,5 a]pyrimidine
... Synthesis of Ethyl 7-(4-methoxyphenyl)-5-methyl-4,7-dihydrotetrazolo[1,5-a]Pyrimidine-6-carboxylate (2).To a stirred solution of Ethylacetoacetate(14.8 ml, 0.11mol) in ethanol (120 ml) was added ...
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Essential Amino Acids in the Treatment of Advanced Uremia: Twenty-Two Months' Experience in a 5-Year-Old Girl
... nous urea nitrogen for prOtein synthesis when a low-protein, energy-rich diet is supplemented with adequate amounts of essential amino acids (or protein of high biological value).. By th[r] ...
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