3,117 results match your criteria Toxicity Ammonia


Hyper-ammonia stress causes induction of inducible nitric oxide synthase gene and more production of nitric oxide in air-breathing magur catfish, Clarias magur (Hamilton).

Fish Physiol Biochem 2018 Dec 8. Epub 2018 Dec 8.

Biochemical Adaptation Laboratory, Department of Zoology, North-Eastern Hill University, Shillong, 793022, India.

Nitric oxide (NO) is an important signalling molecule that plays diverse physiological functions in several vertebrates including that of adaptation to various stressful stimuli. The air-breathing magur catfish (Clarias magur) is known to tolerate a very high external ammonia (HEA) stress in its natural habitats. We report here the possible induction of inducible nitric oxide (inos) gene and more generation of NO in magur catfish exposed to HEA. Read More

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http://dx.doi.org/10.1007/s10695-018-0593-yDOI Listing
December 2018
1 Read

Physiological insights into largemouth bass (Micropterus salmoides) survival during long-term exposure to high environmental ammonia.

Aquat Toxicol 2018 Nov 30;207:72-82. Epub 2018 Nov 30.

Department of Aquaculture and Fisheries, University of Arkansas at Pine Bluff, 1200 North University Drive, Pine Bluff, 71601, AR, USA. Electronic address:

Waterborne ammonia is an environmental pollutant that is toxic to all aquatic animals. However, ammonia induced toxicity as well as compensatory mechanisms to defend against high environmental ammonia (HEA) are not well documented at present for largemouth bass (Micropterus salmoides), a high value fish for culture and sport fisheries in the United States. To provide primary information on the sensitivity of this species to ammonia toxicity, a 96 h-LC test was conducted. Read More

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http://dx.doi.org/10.1016/j.aquatox.2018.11.027DOI Listing
November 2018

Performance of semi-continuous anaerobic co-digestion of poultry manure with fruit and vegetable waste and analysis of digestate quality: A bench scale study.

Waste Manag 2018 Dec 30;82:276-284. Epub 2018 Oct 30.

Department of Environmental Engineering, Democritus University of Thrace, Xanthi, Greece. Electronic address:

Poultry manure (PM) can contain ammonium and ammonia nitrogen, which may inhibit the anaerobic process. The aim of this work was to evaluate the performance of anaerobic digestion of PM co-digested with fruit and vegetable waste. Two semi-continuous bench scale (19L) stirred tank reactors were used. Read More

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http://dx.doi.org/10.1016/j.wasman.2018.10.041DOI Listing
December 2018

Inactivation of Salmonella during dry co-digestion of food waste and pig manure.

Waste Manag 2018 Dec 28;82:231-240. Epub 2018 Oct 28.

Department of Science, Waterford Institute of Technology, Waterford, Ireland.

Extremely high volatile fatty acids (VFAs) and ammonia concentrations can accumulate during dry co-digestion of organic wastes, which may inactivate pathogenic microorganisms. In this study, inactivation of Salmonella during dry co-digestion of pig manure (PM) and food waste (FW), which are both reservoirs of zoonotic pathogens, was examined. The effects of pH, VFAs, ammonia and their interactions were assessed on three inoculated Salmonella serotypes. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S0956053X183065
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http://dx.doi.org/10.1016/j.wasman.2018.10.037DOI Listing
December 2018
2 Reads

In vitro proteomic analysis of methapyrilene toxicity in rat hepatocytes reveals effects on intermediary metabolism.

Arch Toxicol 2018 Nov 22. Epub 2018 Nov 22.

Dept. Food Safety, German Federal Institute for Risk Assessment, Max-Dohrn-Str. 8-10, 10589, Berlin, Germany.

The antihistaminic drug methapyrilene was withdrawn from the market in 1979 because of hepatocarcinogenicity in rats. Since then, the drug has been used as a model hepatotoxin especially for transcriptomic analyses using material from in vivo studies. Much less transcriptomics data are available from in vitro studies, and no studies have investigated proteomic effects of methapyrilene in vitro. Read More

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http://dx.doi.org/10.1007/s00204-018-2360-3DOI Listing
November 2018
9 Reads

Evaluation of reduction estrogenic activity in the combined treatment of landfill leachate and sanitary sewage.

Waste Manag 2018 Oct 25;80:339-348. Epub 2018 Sep 25.

School of Chemistry, Federal University of Rio de Janeiro. 149 Athos da Silveira Ramos Avenue, Room E206, 21941-909 Rio de Janeiro, RJ, Brazil.

Combined treatment of urban solid waste leachate and domestic sewage has emerged in Brazil and worldwide as an alternative to minimize the difficulties of treating landfill leachate. Landfill leachate is a complex matrix of organic and inorganic substances, recalcitrant material and xenobiotic organic compounds that are considered to be highly toxic, as well as endocrine disrupting compounds (EDC) that contribute to increased estrogenic activity. Although combined treatment is feasible for removal of organic matter, ammonia and toxicity, the efficiency of the removal of estrogenic substance is poorly investigated. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S0956053X183055
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http://dx.doi.org/10.1016/j.wasman.2018.09.018DOI Listing
October 2018
2 Reads

Effects of acclimation and pH on ammonia inhibition for mesophilic methanogenic microflora.

Waste Manag 2018 Oct 17;80:218-223. Epub 2018 Sep 17.

School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea. Electronic address:

This work evaluated the toxicity of ammonia toward mesophilic methanogenic microflora, with respect to the acclimation and pH. Microflora acclimated to total ammonia nitrogen (TAN) concentrations of 1.0-2. Read More

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http://dx.doi.org/10.1016/j.wasman.2018.09.016DOI Listing
October 2018
1 Read

Cultivation of Chlorella vulgaris in manure-free piggery wastewater with high-strength ammonium for nutrients removal and biomass production: Effect of ammonium concentration, carbon/nitrogen ratio and pH.

Bioresour Technol 2018 Nov 7;273:203-211. Epub 2018 Nov 7.

MOE Biomass Energy Research Center and College of Food Science and Technology and State Key Laboratory of Food Science and Technology, Nanchang University, 235 East Nanjing Road, Nanchang, Jiangxi 330047, People's Republic of China; Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Avenue, St. Paul, MN 55108, United States.

Ammonia toxicity is a major disadvantage of microalgal growth when high-strength ammonium wastewaters like manure-free piggery wastewater (MFPW) were used as microalgal growth medium. In the present study, the effect of ammonium concentration, carbon/nitrogen ratio, and pH on ammonia toxicity of Chlorella vulgaris cultivated in the MFPW and nutrients removal was investigated. The three important parameters affected ammonia toxicity of C. Read More

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http://dx.doi.org/10.1016/j.biortech.2018.11.019DOI Listing
November 2018

Freshwater chronic ammonia toxicity: a tropical-to-temperate comparison.

Environ Toxicol Chem 2018 Nov 17. Epub 2018 Nov 17.

Environmental Research Institute of the Supervising Scientist, Australian Government Department of the Environment and Energy, Darwin, NT, Australia.

The chronic toxicity of ammonia to tropical freshwater species is under-represented, leading to the use of temperate species to derive water quality guideline values (GV) for tropical regions. Such practices may lead to under-protective GVs due to differences in toxicities observed between tropical and temperate species. Additionally, there are limited studies assessing the toxicity of ammonia in low ionic strength waters, which may also result in higher toxicity. Read More

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http://dx.doi.org/10.1002/etc.4313DOI Listing
November 2018
1 Read

The Role of Temperature, Ammonia and Nitrite to bioluminescence of Aliivibrio fischeri: towards a new sensor for aquaculture.

Conf Proc IEEE Eng Med Biol Soc 2018 Jul;2018:4209-4212

Recirculating Aquaculture Systems (RAS) present an innovative, clean and practical way of producing fish intensively. Stress caused by high concentrations of chemical species such as nitrite and un-ionized ammonia, affects fish health and growth and therefore the sustainability of RAS would require an online monitoring for those chemical stressors. This work reveals a study on the suitability of Aliivibrio fischeri as a toxicity sensor for un-ionized ammonia and nitrite. Read More

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http://dx.doi.org/10.1109/EMBC.2018.8513283DOI Listing
July 2018
1 Read

Alogliptin abates memory injuries of hepatic encephalopathy induced by acute paracetamol intoxication via switching-off autophagy-related apoptosis.

Life Sci 2018 Dec 1;215:11-21. Epub 2018 Nov 1.

Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt. Electronic address:

Aims: Hepatic encephalopathy (HE) is a complex neuropsychiatric syndrome. Paracetamol (APAP) causes, in high doses, a hepatic injury. Alogliptin (ALO), with its 100% oral bioavailability, may be able to reverse the acute hepatic injury and memory impairments. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00243205183070
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http://dx.doi.org/10.1016/j.lfs.2018.10.069DOI Listing
December 2018
3 Reads

Use of a New LC-MS Method for The Determination of Pyrrolizidine Alkaloids in Feeds.

J Vet Res 2018 Jun 24;62(2):183-191. Epub 2018 Oct 24.

Department of Hygiene of Animal Feedingstuffs, National Veterinary Research Institute, 24-100 Pulawy, Poland.

Introduction: Pyrrolizidine alkaloids (PAs) are secondary metabolites produced by many plant species. Due to their toxicity PAs can pose a risk to human and animal health. To detect the toxic compounds in feed materials a sensitive method based on liquid chromatography coupled with mass spectrometry has been developed. Read More

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http://dx.doi.org/10.2478/jvetres-2018-0028DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6200292PMC
June 2018
1 Read

Effects of diphenyl diselenide diet on a model of mercury poisoning.

Mol Biol Rep 2018 Oct 23. Epub 2018 Oct 23.

Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.

This work investigated the preventive effect of diphenyl diselenide [(PhSe)] against the toxic effects of mercury in silver catfish (Rhamdia quelen). The animals were treated during 30 consecutive days with a (PhSe) supplemented feed (3.0 mg kg) or commercial feed. Read More

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http://dx.doi.org/10.1007/s11033-018-4433-zDOI Listing
October 2018
1 Read

Wastewater degradation by iron/copper nanoparticles and the microorganism growth rate.

J Environ Sci (China) 2018 Dec 7;74:19-31. Epub 2018 Feb 7.

Earth System Science and Technology, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasuga-Koen Kasuga, Fukuoka, 816-8580, Japan.

Nowadays, trends in wastewater treatment by zero-valent iron (ZVI) were turned to use bimetallic NZVI particles by planting another metal onto the ZVI surface to increase its reactivity. Nano size zero-valent iron/copper (NZVI/Cu) bimetallic particles were synthesized in order to examine its toxicity effects on the wastewater microbial life, kinetics of phosphorus, ammonia stripping and the reduction of chemical oxygen demand (COD). Various concentrations of NZVI/Cu and operation conditions both aerobic and anaerobic were investigated and compared with pure NZVI experiment. Read More

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http://dx.doi.org/10.1016/j.jes.2018.01.028DOI Listing
December 2018
10 Reads

16s rRNA gene sequencing and radioisotopic analysis reveal the composition of ammonia acclimatized methanogenic consortia.

Bioresour Technol 2019 Jan 26;272:54-62. Epub 2018 Sep 26.

Department of Environmental Engineering, Technical University of Denmark, Bygningstorvet Bygning 115, DK-2800 Kgs. Lyngby, Denmark.

Different mesophilic and thermophilic methanogenic consortia were acclimatised and enriched to extreme total ammonia (9.0 and 5.0 g NH-N L, respectively) and free ammonia (1. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S09608524183138
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http://dx.doi.org/10.1016/j.biortech.2018.09.128DOI Listing
January 2019
5 Reads

The food additive BHA modifies energy metabolism in the perfused rat liver.

Toxicol Lett 2018 Dec 9;299:191-200. Epub 2018 Oct 9.

Department of Biochemistry, Maringá University, 87020900 Maringá, Brazil. Electronic address:

A study of the effects of butylated hydroxyanisole (BHA) on the hepatic metabolism was conducted with emphasis on parameters linked to energy metabolism and mitochondrial reactive oxygen species production. The experimental systems were the isolated perfused rat liver and isolated mitochondria. It was found that BHA inhibits biosynthetic pathways (gluconeogenesis) and ammonia detoxification, which are dependent on ATP generated within the mitochondria. Read More

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http://dx.doi.org/10.1016/j.toxlet.2018.10.005DOI Listing
December 2018
5 Reads

Nitrogen excretion during marsupial development in the terrestrial isopod Armadillidium vulgare.

Comp Biochem Physiol A Mol Integr Physiol 2019 Jan 5;227:92-99. Epub 2018 Oct 5.

Department of Biology, Pomona College, 175 West 6th Street, Claremont, CA 91711, USA. Electronic address:

Marsupial embryos of Armadillidium vulgare (Isopoda: Oniscidea) were collected at different stages of development and assayed for products of nitrogen excretion. Stages were classified as early stage one, late stage one (clear embryo and somite differentiation), early stage two (chorion shed, prior to blastokinesis), late stage two (following blastokinesis), and mancae (vitelline membrane shed; second embryonic molt). Stage one and stage two embryos were primarily ammonotelic. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S10956433183019
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http://dx.doi.org/10.1016/j.cbpa.2018.09.029DOI Listing
January 2019
2 Reads

Biodegradation study of methadone by adapted activated sludge: Elimination kinetics, transformation products and ecotoxicological evaluation.

Chemosphere 2019 Jan 28;214:719-728. Epub 2018 Sep 28.

Division of Marine and Environmental Research, Rudjer Boskovic Institute, Bijenicka 54, 10000, Zagreb, Croatia. Electronic address:

The biotransformation study of difficult-to-degrade opioid analgesic methadone (MTHD) was performed by activated sludge culture adapted to high concentration of methadone (10 mg/L). The study included determination of elimination kinetics of the parent compound, taxonomic characterization of microbial culture, identification of biotransformation products (TPs) and assessment of ecotoxicological effects of biotransformation processes. The chemical analyses were performed by ultra-performance liquid chromatography/quadrupole-time-of-flight mass spectrometry, whereas the ecotoxicological assessment was made based on determinations of toxicity to freshwater algae. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00456535183181
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http://dx.doi.org/10.1016/j.chemosphere.2018.09.153DOI Listing
January 2019
2 Reads

Use of integrated biomarker indexes for assessing the impact of receiving waters on a native neotropical teleost fish.

Sci Total Environ 2019 Feb 27;650(Pt 2):1779-1786. Epub 2018 Sep 27.

Programa de Ecofisiología Aplicada, Instituto de Ecología y Desarrollo Sustentable (PRODEA-INEDES-CONICET), Universidad Nacional de Lujan (UNLu), PO Box 221, B6700ZBA Luján, Argentina. Electronic address:

In the field of aquatic ecotoxicology, indexes obtained from a battery of biomarkers have proved to be a useful tool for assessing quantifiable and integrated health responses of organisms exposed to pollutants. The objective of this work was to evaluate the effects of exposure to the Reconquista River water (RR) on adults of Cnesterodon decemmaculatus using different integrated indexes. We conducted a 12-d laboratory assay involving the exposure of fish to RR, a negative control (moderately hard water - MHW medium), and a positive control (for genotoxicity with MHW + Cyclophosphamide, CP). Read More

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http://dx.doi.org/10.1016/j.scitotenv.2018.09.342DOI Listing
February 2019
2 Reads

Practical approach to the evaluation of industrial wastewater treatment by the application of advanced microbiological techniques.

Ecotoxicol Environ Saf 2018 Dec 25;166:123-131. Epub 2018 Sep 25.

Plataforma Solar de Almería-CIEMAT, Carretera de Senés Km 4, 04200 Tabernas, Almería, Spain; CIESOL, Joint Centre of the University of Almería-CIEMAT, 04120 Almería, Spain.

In cork industry, the operation of boiling raw cork generates large volumes of wastewater named Cork Boiling Wastewater (CBW). The main characteristics are the low biodegradability and medium to low acute toxicity, resulting in the necessity of designing advanced biological treatments by possible conventional activated sludge adaptation. In order to evaluate the variation of bacterial population along that process, a study based on optical microscopy, plate count, DNA extraction, qPCR and massive sequencing techniques was performed. Read More

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http://dx.doi.org/10.1016/j.ecoenv.2018.09.044DOI Listing
December 2018

Transcriptomic evidence of adaptive tolerance to high environmental ammonia in mudskippers.

Genomics 2018 11 24;110(6):404-413. Epub 2018 Sep 24.

Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI Academy of Marine Sciences, BGI Marine, BGI, Shenzhen, China; BGI Zhenjiang Institute of Hydrobiology, Zhenjiang, China; Laboratory of Aquatic Genomics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China. Electronic address:

Mudskippers are typical amphibious fishes and possess various strategies to ameliorate ammonia toxicity during exposure to environmental ammonia. The present study aimed to provide transcriptomic evidence through profiling the gill and liver transcriptomes of Boleophthalmus pectinirostris (BP) and Periophthalmus magnuspinnatus (PM), which were subjected to treatment with high environmental ammonia for up to 72 h. The results of gene function annotation showed that most of the differentially expressed genes were involved in metabolic pathways. Read More

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http://dx.doi.org/10.1016/j.ygeno.2018.09.001DOI Listing
November 2018
2 Reads

Life cycle cost and environmental assessment for resource-oriented toilet systems.

J Clean Prod 2018 Sep;196:1188-1197

School of Environment, Tsinghua University, Beijing, 100084, PR China.

The rich content of nutrients in human waste provides an outlook for turning it from pollutants to potential resources. The pilot-scale resource-oriented toilet with forward osmosis technology was demonstrated to have advantages to recover clean water, nitrogen, phosphorus, potassium, biogas, and heat from urine and feces. For the possibility of further full-scale implementation in different scenarios, six resource-oriented toilet systems and one conventional toilet system were designed in this study. Read More

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http://dx.doi.org/10.1016/j.jclepro.2018.06.129DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6106690PMC
September 2018
1 Read

Toxicity evaluation of textile dyeing effluent and its possible relationship with chemical oxygen demand.

Ecotoxicol Environ Saf 2018 Dec 21;166:56-62. Epub 2018 Sep 21.

Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China.

Textile dyeing wastewater was the focus of much research because of its adverse effect on aquatic biota. In the present research, textile dyeing influent and effluent samples were collected from four textile dyeing wastewater treatment plants (TDPs) in Guangdong province, China, and their conventional indicators and toxicity were examined to reveal relationships. The relationship between toxicity and chemical oxygen demand (COD) was clearly established at individual TDPs. Read More

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http://dx.doi.org/10.1016/j.ecoenv.2018.08.106DOI Listing
December 2018
1 Read

Long-term effects of environmentally relevant concentrations of silver nanoparticles on major soil bacterial phyla of a loamy soil.

Environ Sci Eur 2018 31;30(1):31. Epub 2018 Aug 31.

Department of Soil Science, Faculty of Regional and Environmental Science, University of Trier, Campus II, Behringstraße 21, 54296 Trier, Germany.

Background: The growing production and use of engineered AgNP in industry and private households make increasing concentrations of AgNP in the environment unavoidable. Although we already know the harmful effects of AgNP on pivotal bacterial driven soil functions, information about the impact of silver nanoparticles (AgNP) on the soil bacterial community structure is rare. Hence, the aim of this study was to reveal the long-term effects of AgNP on major soil bacterial phyla in a loamy soil. Read More

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https://enveurope.springeropen.com/articles/10.1186/s12302-0
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http://dx.doi.org/10.1186/s12302-018-0160-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6132800PMC
August 2018
7 Reads

Piercing the haze.

Authors:
Jason Plautz

Science 2018 Sep;361(6407):1060-1063

Salt Lake City.

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http://dx.doi.org/10.1126/science.361.6407.1060DOI Listing
September 2018

Transcriptome reveals involvement of immune defense, oxidative imbalance, and apoptosis in ammonia-stress response of the black tiger shrimp (Penaeus monodon).

Fish Shellfish Immunol 2018 Dec 8;83:162-170. Epub 2018 Sep 8.

South China Sea Resource Exploitation and Protection Collaborative Innovation Center (SCS-REPIC)/School of Marine Sciences, Sun Yat-sen University, Guangzhou, China; South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, Guangzhou, China. Electronic address:

Ammonia is a major aquatic environmental pollutant that negatively impacts shrimp health and commercial productivity. However, we currently do not fully understand the underlying molecular mechanisms of ammonia stress in shrimp. We therefore performed transcriptomic analysis of hepatopancreas from black tiger shrimp (Penaeus monodon) treated with ammonia-stress. Read More

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http://dx.doi.org/10.1016/j.fsi.2018.09.026DOI Listing
December 2018
2 Reads

A Comparison of the chemical sensitivities between in vitro and in vivo propagated juvenile freshwater mussels: Implications for standard toxicity testing.

Environ Toxicol Chem 2018 Dec 15;37(12):3077-3085. Epub 2018 Nov 15.

Frankfort Field Office, US Fish and Wildlife Service, Frankfort, Kentucky, USA.

Unionid mussels are ecologically important and are globally imperiled. Toxicants contribute to mussel declines, and toxicity tests using juvenile mussels-a sensitive life stage-are valuable in determining thresholds used to set water quality criteria. In vitro culture methods provide an efficient way to propagate juveniles for toxicity testing, but their relative chemical sensitivity compared with in vivo propagated juveniles is unknown. Read More

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http://dx.doi.org/10.1002/etc.4270DOI Listing
December 2018

Bioavailability of biosolids-borne ciprofloxacin and azithromycin to terrestrial organisms: Microbial toxicity and earthworm responses.

Sci Total Environ 2019 Feb 3;650(Pt 1):18-26. Epub 2018 Sep 3.

Metropolitan Water Reclamation District, Chicago, IL 60611, United States of America.

Information on bioavailability of two antibiotic TOrCs, ciprofloxacin (CIP) and azithromycin (AZ), to terrestrial organisms is severely limited, especially in the biosolids context. Responses of two terrestrial organisms, earthworms and microbes, to a range of environmentally relevant concentrations of biosolids-borne CIP and AZ were assessed in laboratory incubation studies involving H-labeled compounds. Earthworm assessments were based on the Earthworm Sub-chronic Toxicity Test (OCSPP 850. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00489697183342
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http://dx.doi.org/10.1016/j.scitotenv.2018.09.004DOI Listing
February 2019
6 Reads

Blame it on the metabolite: 3,5-dichloraniline rather than the parent compound is responsible for decreasing diversity and function of soil microorganisms.

Appl Environ Microbiol 2018 Sep 7. Epub 2018 Sep 7.

Universita Cattolica del Sacro Cuore, Department for Sustainable Food Process, Piacenza 29122, Italy

Pesticides are key stressors of soil microorganisms with reciprocal effects on ecosystem functioning. These effects have been mainly attributed to the parent compounds, while the impact of their transformation products (TPs) has been largely overlooked. We assessed, in a meadow soil (A),the transformation of iprodione and its toxicity on the (i) abundance of functional microbial groups, (ii) activity of key microbial enzymes and (iii) diversity of bacteria, fungi and ammonia-oxidizing microorganisms (AOM) using amplicon sequencing. Read More

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http://aem.asm.org/lookup/doi/10.1128/AEM.01536-18
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http://dx.doi.org/10.1128/AEM.01536-18DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6210116PMC
September 2018
9 Reads

Air-breathing and excretory nitrogen metabolism in fishes.

Acta Histochem 2018 Oct 2;120(7):680-690. Epub 2018 Sep 2.

Natural Sciences and Science Education, National Institute of Education, Nanyang Technological University, 1 Nanyang Walk, Singapore 637616, Republic of Singapore.

During water-land transition, ancient fishes acquired the ability to breathe air, but air-breathing engendered problems in nitrogenous waste excretion. Nitrogen is a fundamental component of amino acids, proteins, and nucleic acids, and the degradation of these nitrogen-containing compounds releases ammonia. Ammonia is toxic and must be removed. Read More

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http://dx.doi.org/10.1016/j.acthis.2018.08.013DOI Listing
October 2018

Do we know how best to disinfect child care sites in the United States? A review of available disinfectant efficacy data and health risks of the major disinfectant classes.

Am J Infect Control 2018 Aug 29. Epub 2018 Aug 29.

University of California San Francisco Division of Occupational and Environmental Medicine, San Francisco, CA; Western States Pediatric Environmental Health Specialty Unit-University of California San Francisco, San Francisco, CA.

Background: Children in child care settings have a high infectious burden. They are frequently exposed to sanitizing and disinfecting agents, whose toxicities have not been studied in these settings. Current guidance on the preferred disinfection agents for child care is vague. Read More

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http://dx.doi.org/10.1016/j.ajic.2018.06.013DOI Listing
August 2018
1 Read

Monitoring Aquaculture Water Quality: Design of an Early Warning Sensor with and Predictive Models.

Sensors (Basel) 2018 Aug 29;18(9). Epub 2018 Aug 29.

Centre for Environmental Radioactivity (CERAD CoE), Norwegian University of Life Sciences (NMBU), Faculty of Environmental Sciences and Natural Resource Management, P.O. Box 5003, NO-1432 Ås, Norway.

A novel toxicity-warning sensor for water quality monitoring in recirculating aquaculture systems (RAS) is presented. The design of the sensor system mainly comprises a whole-cell biosensor. , a luminescent bacterium widely used in toxicity analysis, was tested for a mixture of known fish-health stressors, namely nitrite, un-ionized ammonia, copper, aluminum and zinc. Read More

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http://www.mdpi.com/1424-8220/18/9/2848
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http://dx.doi.org/10.3390/s18092848DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6164392PMC
August 2018
7 Reads

Ecological response of nitrification to oil spills and its impact on the nitrogen cycle.

Environ Microbiol 2018 Aug 22. Epub 2018 Aug 22.

Department of Biological Sciences, University of Alabama, Tuscaloosa, AL, 35487, USA.

Marine oil spills are catastrophic events that cause massive damage to ecosystems at all trophic levels. While most of the research has focused on carbon-degrading microorganisms, the potential impacts of hydrocarbons on microbes responsible for nitrification have received far less attention. Nitrifiers are sensitive to hydrocarbon toxicity: ammonia-oxidizing bacteria and archaea being 100 and 1000 times more sensitive than typical heterotrophs respectively. Read More

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http://dx.doi.org/10.1111/1462-2920.14391DOI Listing
August 2018
2 Reads

Effect of tumor necrosis factor-α on the expression of the ammonia transporter Rhcg in the brain in mice with acute liver failure.

J Neuroinflammation 2018 Aug 22;15(1):234. Epub 2018 Aug 22.

Department of Infectious Diseases, The First Affiliated Hospital of China Medical University, 155 Nanjing North Street, Shenyang, 110001, Liaoning Province, People's Republic of China.

Background: Ammonia and tumor necrosis factor-alpha (TNF-α) play important roles in the mechanisms of hepatic encephalopathy (HE). Rhesus glycoprotein C (Rhcg) is important for ammonia transport especially in the kidney. The aim of the present study was to investigate the role of Rhcg in the brain in acute liver failure (ALF) and the effect of TNF-α on Rhcg expression. Read More

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http://dx.doi.org/10.1186/s12974-018-1264-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6106833PMC
August 2018
6 Reads
5.410 Impact Factor

Formation and speciation of chlorinated, brominated, and iodinated haloacetamides in chloraminated iodide-containing waters.

Water Res 2018 11 31;145:103-112. Epub 2018 Jul 31.

State Key Laboratory of Pollution Control and Resources Reuse, National Centre for International Research of Sustainable Urban Water System, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China.

Haloacetamides (HAMs), an emerging class of disinfection by-products, have received increasing attention due to their elevated cyto- and genotoxicity. However, only limited information is available regarding the iodinated analogues. This study investigated the formation and speciation of iodinated haloacetamides (I-HAMs) and their chlorinated/brominated analogues during the chloramination of bromide and/or iodide-containing waters and a model compound solution over various time periods. Read More

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http://dx.doi.org/10.1016/j.watres.2018.07.074DOI Listing
November 2018
7 Reads

HepaRG-Progenitor Cell Derived Hepatocytes Cultured in Bioartificial Livers Are Protected from Healthy- and Acute Liver Failure-Plasma Induced Toxicity.

Cell Physiol Biochem 2018 15;48(5):2189-2204. Epub 2018 Aug 15.

Tytgat Institute for Liver and Intestinal Research, Academic Medical Center (AMC), Amsterdam, the Netherlands.

Background/aims: For applicability of cell-based therapies aimed at the treatment of liver failure, such as bioartificial livers (BALs) and hepatocyte transplantation, it is essential that the applied hepatocytes tolerate exposure to the patient plasma. However, plasma from both healthy donors and acute liver failure (ALF) patients is detrimental to hepatocytes and hepatic cell lines, such as HepaRG. We aimed to elucidate the underlying mechanisms of plasma-induced toxicity against HepaRG cells in order to ultimately develop methods to reduce this toxicity and render HepaRG-BAL treatment more effective. Read More

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http://dx.doi.org/10.1159/000492560DOI Listing
September 2018
8 Reads

Effect of dietary alanyl-glutamine dipeptide against chronic ammonia stress induced hyperammonemia in the juvenile yellow catfish (Pelteobagrus fulvidraco).

Comp Biochem Physiol C Toxicol Pharmacol 2018 Nov 11;213:55-61. Epub 2018 Aug 11.

School of Marine Sciences, Ningbo University, Ningbo 315211, China.

Triplicate groups of juvenile yellow catfish (1.98 ± 0.01 g) were fed diets supplemented with 0% and 1% alanyl-glutamine dipeptide (AGD) for 56 days under three ammonia concentrations (0. Read More

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http://dx.doi.org/10.1016/j.cbpc.2018.08.001DOI Listing
November 2018
9 Reads

Electrochemical DNA biosensor for potential carcinogen detection in food sample.

Food Chem 2018 Dec 5;269:503-510. Epub 2018 Jul 5.

School of Biomedical Sciences, Faculty of Health Science, Universiti Kebangsaan Malaysia, 43650 Bandar Baru Bangi Selangor Darul Ehsan, Malaysia. Electronic address:

The presence of carcinogens in food is a major food safety concern. A nanocomposite-based electrochemical DNA biosensor was constructed for potential carcinogen detection in food samples by immobilizing amine terminated single stranded DNA onto silica nanospheres deposited onto a screen-printed electrode modified using gold nanoparticles. The effect of three different DNA sequences: 15-base guanine, 24-base guanine and 24-base adenine-thymine rich DNA on carcinogen (formaldehyde and acrylamide) detection was evaluated. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S03088146183117
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http://dx.doi.org/10.1016/j.foodchem.2018.07.035DOI Listing
December 2018
15 Reads

Ureases in the gastrointestinal tracts of ruminant and monogastric animals and their implication in urea-N/ammonia metabolism: A review.

J Adv Res 2018 Sep 26;13:39-50. Epub 2018 Feb 26.

Institute of Veterinary Physiology, Freie Universität Berlin, Oertzenweg 19b, 14163 Berlin, Germany.

Urea in diets of ruminants has been investigated to substitute expensive animal and vegetable protein sources for more than a century, and has been widely incorporated in diets of ruminants for many years. Urea is also recycled to the fermentative parts of the gastrointestinal (GI) tracts through saliva or direct secretory flux from blood depending upon the dietary situations. Within the GI tracts, urea is hydrolyzed to ammonia by urease enzymes produced by GI microorganisms and subsequent ammonia utilization serves the synthesis of microbial protein. Read More

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http://dx.doi.org/10.1016/j.jare.2018.02.005DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6077136PMC
September 2018
1 Read

Alternative Risk Assessment for Dangerous Chemicals in South Korea Regulation: Comparing Three Modeling Programs.

Int J Environ Res Public Health 2018 07 28;15(8). Epub 2018 Jul 28.

Department of Health Science, Korea University, Anam-ro 145, Seongbuk-gu, Seoul 02841, Korea.

Unlike other countries, the Korean chemical industry does not clearly distinguish between industrial sites and residential areas. The 2012 Gumi Hydrogen Fluoride Accident revealed that chemical accidents could cause damage to nearby residents. Accordingly, the Chemicals Control Act was enacted in 2015, which requested industrial sites using chemicals to perform a risk assessment for all chemical facilities and to distribute the results to the local residents and governments. Read More

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http://dx.doi.org/10.3390/ijerph15081600DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6121683PMC
July 2018
3 Reads

Evaluating toxicity of 1-octyl-3-methylimidazolium hexafluorophosphate to microorganisms in soil.

Chemosphere 2018 Nov 19;210:762-768. Epub 2018 Jul 19.

College of Resources and Environment, Shandong Agricultural University, Key Laboratory of Agricultural Environment in Universities of Shandong, National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Taian, 271018, China. Electronic address:

Ionic liquids (ILs) were widely applied because of their excellent properties. The present investigation studied the toxicity of the IL 1-octyl-3-methylimidazolium hexafluorophosphate ([Omim]PF) to the soil microbial population and community diversity with dose (1.0, 2. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00456535183137
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http://dx.doi.org/10.1016/j.chemosphere.2018.07.105DOI Listing
November 2018
12 Reads

Tradeoffs between pathogen inactivation and disinfection byproduct formation during sequential chlorine and chloramine disinfection for wastewater reuse.

Water Res 2018 10 31;143:579-588. Epub 2018 May 31.

Department of Civil and Environmental Engineering, Stanford University, 473 Via Ortega, Stanford, CA 94305, United States. Electronic address:

Treatment of fully nitrified municipal wastewater effluents with chlorine followed by chloramines (i.e., sequential chlorine disinfection) upstream of advanced treatment trains can contribute pathogen inactivation credits for potable reuse while leaving a chloramine residual to control biofouling on membrane units in the advanced treatment train. Read More

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http://dx.doi.org/10.1016/j.watres.2018.05.050DOI Listing
October 2018
4 Reads

Surface Pore Engineering of Covalent Organic Frameworks for Ammonia Capture through Synergistic Multivariate and Open Metal Site Approaches.

ACS Cent Sci 2018 Jun 6;4(6):748-754. Epub 2018 Jun 6.

Key Laboratory of Polyoxometalate Science of Ministry of Education, Northeast Normal University, Changchun 130024, P. R. China.

Ammonia (NH) is a commonly used industrial gas, but its corrosiveness and toxicity are hazardous to human health. Although many adsorbents have been investigated for NH sorption, limited ammonia uptake remains an urgent issue yet to be solved. In this article, a series of multivariate covalent organic frameworks (COFs) are explored which are densely functionalized with various active groups, such as -N-H, -C=O, and carboxyl group. Read More

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http://dx.doi.org/10.1021/acscentsci.8b00232DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6026774PMC
June 2018
3 Reads

Sulfur and Calcium Simultaneously Regulate Photosynthetic Performance and Nitrogen Metabolism Status in As-Challenged L. Seedlings.

Front Plant Sci 2018 19;9:772. Epub 2018 Jun 19.

Ranjan Plant Physiology and Biochemistry Laboratory, Department of Botany, University of Allahabad, Allahabad, India.

In the present study, the role of sulfur (KSO: S; 60 mg S kg sand) and/or calcium (CaCl: Ca; 250 mg Ca kg sand) applied alone as well as in combination on growth, photosynthetic performance, indices of chlorophyll fluorescence, nitrogen metabolism, and protein and carbohydrate contents of Indian mustard ( L.) seedlings in the absence and presence of arsenic (NaHAsO.7HO: As; 15 mg As kg sand and As; 30 mg As kg sand) stress was analyzed. Read More

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http://dx.doi.org/10.3389/fpls.2018.00772DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6018418PMC
June 2018
9 Reads

[Aerobic Degradation and Microbial Community Succession of Coking Wastewater with Municipal Sludge].

Huan Jing Ke Xue 2017 Sep;38(9):3807-3815

School of Environment and Energy, South China University of Technology, Guangzhou 510006, China.

Coking wastewater is a typical industrial wastewater with high toxicity. Its treatment with biological processes is often challenging because it contains constituents inhibiting microbial activity. To study the inhibitory effect and possible acclimation of microbes in coking wastewater treatment, municipal sludge was inoculated into coking wastewater. Read More

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http://dx.doi.org/10.13227/j.hjkx.201702146DOI Listing
September 2017
9 Reads

[Effect of on Ammoxidation and Denitrification Microorganisms in Eutrophic Freshwaters].

Huan Jing Ke Xue 2017 Oct;38(10):4253-4261

State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China.

The water hyacinth, , is widely used for the ecological restoration of eutrophic freshwater bodies, but little is known about its microbial interactions and nitrogen removal potential. In this study, we compared the relative importance of and bacteria in nitrogen removal. We also examined the plant's ability to modulate the abundance and diversity of nitrifying and denitrifying bacteria. Read More

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http://dx.doi.org/10.13227/j.hjkx.201701179DOI Listing
October 2017
2 Reads

Attenuation of pharmaceuticals, nutrients and toxicity in a rural sewage lagoon system integrated with a subsurface filtration technology.

Chemosphere 2018 Oct 19;209:767-775. Epub 2018 Jun 19.

Department of Environment and Geography, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada; Escuela de Química, Instituto Tecnológico de Costa Rica, Cartago, 159-7050, Costa Rica; Richardson College for the Environment, Department of Environmental Studies and Sciences and Department of Chemistry, The University of Winnipeg, Winnipeg, MB, R3B 2E9, Canada. Electronic address:

Although many studies have addressed the ability of subsurface filtration systems to remove emerging contaminants from wastewater at micro- and mesocosm-scale, little is known about their performance on full-scale wastewater treatment facilities. To understand better how effective these systems can be for municipal wastewater polishing, we assessed the ability of a full-scale lagoon-subsurface filter system located in Dunnottar, Manitoba, Canada, to attenuate regulatory wastewater parameters, nutrients, pharmaceuticals, and toxicity over the course of the discharge periods in 2015 and 2016 (June-October). Pharmaceuticals included β-blockers, anticonvulsant drugs, and macrolide and sulfonamide antibiotics. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2018.06.119DOI Listing
October 2018
2 Reads

"Candidatus Nitrosotenuis aquarius," an Ammonia-Oxidizing Archaeon from a Freshwater Aquarium Biofilter.

Appl Environ Microbiol 2018 Oct 17;84(19). Epub 2018 Sep 17.

Department of Biology, University of Waterloo, Waterloo, Ontario, Canada

Ammonia is a metabolic waste product excreted by aquatic organisms that causes toxicity when it accumulates. Aquaria and aquaculture systems therefore use biological filters that promote the growth of nitrifiers to convert ammonia to nitrate. Ammonia-oxidizing bacteria (AOB) have been isolated from aquarium biofilters and are available as commercial supplements, but recent evidence suggests that ammonia-oxidizing archaea (AOA) are abundant in aquarium biofilters. Read More

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http://dx.doi.org/10.1128/AEM.01430-18DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6146995PMC
October 2018
10 Reads

Long-term effects of environmentally relevant concentrations of silver nanoparticles on microbial biomass, enzyme activity, and functional genes involved in the nitrogen cycle of loamy soil.

J Environ Sci (China) 2018 Jul 22;69:12-22. Epub 2018 Apr 22.

Faculty of Regional and Environmental Sciences, Department of Soil Science, University of Trier, Trier, Germany.

The increasing production and use of engineered silver nanoparticles (AgNP) in industry and private households are leading to increased concentrations of AgNP in the environment. An ecological risk assessment of AgNP is needed, but it requires understanding the long term effects of environmentally relevant concentrations of AgNP on the soil microbiome. Hence, the aim of this study was to reveal the long-term effects of AgNP on soil microorganisms. Read More

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http://dx.doi.org/10.1016/j.jes.2018.04.013DOI Listing
July 2018
9 Reads

Characterising and modelling free ammonia and ammonium inhibition in anaerobic systems.

Water Res 2018 10 14;143:127-135. Epub 2018 Jun 14.

Advanced Water Management Centre, The University of Queensland, Brisbane, 4072, QLD, Australia.

Inhibition by ammoniacal nitrogen, consisting of free ammonia (NH) and ammonium ion (NH), has been widely investigated for anaerobic digestion. However, despite the large amount of research on the subject, ammoniacal nitrogen inhibition still threatens many anaerobic digesters. This paper presents (i) a method to reliably characterise ammoniacal nitrogen inhibition and (ii) a robust inhibition modelling approach. Read More

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http://dx.doi.org/10.1016/j.watres.2018.06.021DOI Listing
October 2018
6 Reads