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Dissolved oxygen and ammonia affect ammonia production via GDH/AMPK signaling pathway and alter flesh quality in Chinese perch (Siniperca chuatsi)
The dissolved oxygen (DO) and ammonia are crucial to the growth of Chinese perch ( Siniperca chuatsi ). Information on the effects of DO and total...
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Ammonia-oxidizing bacteria and archaea exhibit differential nitrogen source preferences
Ammonia-oxidizing microorganisms (AOM) contribute to one of the largest nitrogen fluxes in the global nitrogen budget. Four distinct lineages of AOM:...
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Gut microbiome-derived ammonia modulates stress vulnerability in the host
Ammonia has been long recognized as a metabolic waste product with well-known neurotoxic effects. However, little is known about the beneficial...
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A review of dietary approaches for ammonia toxicity remediation in fish
We reviewed available data regarding the benefits of feed additives for mitigation of ammonia toxicity in fish. We first emphasized the toxic effects...
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Adaptive Mechanisms of Fish under Conditions of Ammonia Toxicity
AbstractAmmonia is the main excretory substance resulting from the catabolism of proteins and amino acids in most aquatic animals, especially in...
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Nitrification and beyond: metabolic versatility of ammonia oxidising archaea
Ammonia oxidising archaea are among the most abundant living organisms on Earth and key microbial players in the global nitrogen cycle. They carry...
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Ammonia excretion by the fish gill: discoveries and ideas that shaped our current understanding
The fish gill serves many physiological functions, among which is the excretion of ammonia, the primary nitrogenous waste in most fishes. Although it...
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Amino acids downregulate SIRT4 to detoxify ammonia through the urea cycle
Ammonia production via glutamate dehydrogenase is inhibited by SIRT4, a sirtuin that displays both amidase and non-amidase activities. The processes...
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Effects of water ammonia nitrogen on hemolymph and intestinal microbiota of Litopenaeus vannamei
Ammonia stress was detrimental to shrimp, but how water ammonia nitrogen (ammonia-N) influences the shrimp’s health remains unclear. Thus, this study...
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Acute toxicity of ammonia and nitrite to Siamese fighting fish (Betta splendens)
The acute toxicity and sublethal effects of ammonia and nitrite on the air-beathing Siamese fighting fish, betta ( Betta splendens ) was studied for...
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Isolation of Ammonia Oxidizing Bacteria
Ammonia oxidizing bacteria (AOB) oxidize ammonia to nitrate and play significant role in nitrogen cycle. Isolation and cultivation of AOB poses...
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Impaired Enzymatic Antioxidant Defense in Erythrocytes of Rats with Ammonia-Induced Encephalopathy: Role of NMDA Receptors
AbstractHepatic encephalopathy (HE), a neuropsychiatric disorder develo** in patients with severe hepatic dysfunction, has been known for more than...
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Integrated physiological, metabolome, and transcriptome analysis of the hepatopancreas in Penaeus vannamei under ammonia stress
Ammonia nitrogen is a common environmental factor in aquaculture systems. High levels of ammonia nitrogen threaten the health of shrimp. This study...
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Syntrophic entanglements for propionate and acetate oxidation under thermophilic and high-ammonia conditions
Propionate is a key intermediate in anaerobic digestion processes and often accumulates in association with perturbations, such as elevated levels of...
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Early onset of urea synthesis and ammonia detoxification pathways in three terrestrially develo** frogs
Frogs evolved terrestrial development multiple times, necessitating mechanisms to avoid ammonia toxicity at early stages. Urea synthesis from ammonia...
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Unexpected complexity of the ammonia monooxygenase in archaea
Ammonia oxidation, as the first step of nitrification, constitutes a critical process in the global nitrogen cycle. However, fundamental knowledge of...
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15N-DNA stable isotope probing reveals niche differentiation of ammonia oxidizers in paddy soils
AbstractChemoautotrophic canonical ammonia oxidizers (ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB)) and complete ammonia...
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Autonomous electrochemical system for ammonia oxidation reaction measurements at the International Space Station
An autonomous electrochemical system prototype for ammonia oxidation reaction (AOR) measurements was efficiently done inside a 4'' x 4'' x 8'' 2U...
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Rapid ammonia build-up in small individually ventilated mouse cages cannot be overcome by adjusting the amount of bedding
We sought to investigate if varying levels of bedding had an effect on intra-cage ammonia levels in individually ventilated mouse cages (Euro...
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Canonical ammonia oxidizers and comammox Clade A play active roles in nitrification in a black soil at different pH and ammonium concentrations
The discovery of complete ammonia oxidizers (comammox) challenged our cognition of the nitrification process. Ammonia oxidizing archaea (AOA),...
