1. 1. Changes with time of ammonia and urea concentrations and the ratios of urea-N:ammonia-N in the blood, liver, muscle, skin and gills of P. cantonensis and B. pectinirostris were studied in order to clarify whether or not conversion from ammonia to urea is performed in the fish ...
57 Genetic evidence links circulating glycine levels to ammonia detoxification via the urea cycle, suggesting that glycine depletion may reflect competitive inhibition of its synthesis by upregulated amino acid catabolism.58 However, genetics also suggest that low glycine levels may reflect progressive ...
PAL, phenylalanine ammonia lyase; C4H, trans-cinnamate 4-monooxygenase; 4CL, 4-coumarate-CoA ligase; CCR, cinnamoyl-CoA reductase; POD, peroxidase. The orange colour indicates a downregulated protein. Full size image As the first step of the phenylpropanoid pathway, PAL mainly breaks down ...
The virulence of urease-producing bacteria depends on the ability of urease to degrade urea into ammonia and thereby to alkalinize the urine. Infections caused by urease-producing organisms such as Proteus mirabilis are particularly diff... CL Parsons,C Stauffer,SG Mulholland,... - 《Journal of...
The metabolic significance of the Orn/Arg ratio reflects arginase activity, an enzyme converting Arg into Orn and urea. Thus, the action of this enzyme is important both to produce Orn and to help to detoxify ammonia. It has been noted that hyperammonaemia may be a cause of psychosis in ...
However, crop residue could be upgraded to improve its intake and digestibility by using low-technology treatments such as ammonia generated from fertilizer urea (Sundstol et al. 1978). In recent years, pastoralists need to pay in order to get access to crop residue in the agricultural land. ...
This research investigated the occurrence of ammonia fungi, and changes in soil conditions and the decay rates of bamboo (Phyllostachys bambusoides) culm pieces in response to application of urea (800 g/m^2) on the floor of a bamboo (P. bambusoides) grove. Research was conducted in Chiba...
Longer exposures at higher chlorhexidine concentrations of 1–2 per cent inhibited ammonia production from urea. These results indicate that, in vitro, chlorhexidine can inhibit aspects of plaque activity associated with continued plaque accumulation, caries and periodontal disease and at concentrations ...
Orn is a key substrate in the urea cycle that is required for ammonia detoxification in the mitochondria due to dea- mination of adenosine monophosphate and branched-chain amino acids as energy sources used by contracting muscle47. Indeed, oral supplementation of Orn has been shown to attenuate ...
The significantly decreased levels of ornithine and putrescine in untreated HIV patients also hints at a reduced urea cycle and thus ammonia clearance in these patients compared to controls. Additionally, decreased levels of alanine, asparagine, α-aminobutyric acid, tyrosine, and methionine were also ...