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nickel toxicity

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https://www.readbyqxmd.com/read/28542385/cadmium-toxicity-induced-contrasting-patterns-of-concentrations-of-free-sarcosine-specific-amino-acids-and-selected-microelements-in-two-noccaea-species
#1
Veronika Zemanová, Milan Pavlík, Daniela Pavlíková
Cadmium (Cd) toxicity affects numerous metabolic processes in plants. In the presence of Cd, plants accumulate specific amino acids which may be beneficial to developing Cd tolerance. Our study aimed to characterize the changes in the metabolism of selected free amino acids that are associated with Cd tolerance, and investigate the levels of selected microelements in order to relate these changes to the adaptation strategies of two metallophytes-Noccaea caerulescens (Redlschlag, Austria) and Noccaea praecox (Mežica, Slovenia)...
2017: PloS One
https://www.readbyqxmd.com/read/28528650/the-role-of-intermetal-competition-and-mis-metalation-in-metal-toxicity
#2
Anna Barwinska-Sendra, Kevin J Waldron
The metals manganese, iron, cobalt, nickel, copper and zinc are essential for almost all bacteria, but their precise metal requirements vary by species, by ecological niche and by growth condition. Bacteria thus must acquire each of these essential elements in sufficient quantity to satisfy their cellular demand, but in excess these same elements are toxic. Metal toxicity has been exploited by humanity for centuries, and by the mammalian immune system for far longer, yet the mechanisms by which these elements cause toxicity to bacteria are not fully understood...
2017: Advances in Microbial Physiology
https://www.readbyqxmd.com/read/28525708/affinity-based-assembly-of-peptides-on-plasmonic-nanoparticles-delivered-intracellularly-with-light-activated-control
#3
Demosthenes P Morales, William Wonderly, Xiao Huang, Meghan McAdams, Amanda Chron, Norbert O Reich
We report a universal strategy for functionalizing near-infrared light-responsive nanocarriers with both a peptide "cargo" and an orthogonal cell-penetrating peptide. Modularity of both the cargo and internalization peptide attachment are an important feature of these materials relying on the robust affinity of polyhistidine tags to nitrilotriacetic acid in the presence of nickel as well as the affinity of biotin labeled peptides to streptavidin. Attachment to the gold surface uses thiol labeled scaffolds terminated with the affinity partner...
May 19, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28497332/toxicity-of-nickel-to-soil-microbial-community-with-and-without-the-presence-of-its-mineral-collectors-a-calorimetric-approach
#4
Prudence Bararunyeretse, Hongbing Ji, Jun Yao
The toxicity of nickel and three of its main collectors, sodium isopropyl xanthate (SIPX), sodium ethyl xanthate (SEX), and potassium ethyl xanthate (PEX) to soil microbial activity, was analyzed, individually and as a binary combination of nickel and each of the collectors. The investigation was performed through the microcalorimetric analysis method. For the single chemicals, all power-time curves exhibited lag, exponential, stationary, and death phases of microbial growth. Different parameters exhibited a significant adverse effect of the analyzed chemicals on soil microbial activity, with a positive relationship between the inhibitory ratio and the chemical dose (p < 0...
May 11, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28488336/hazard-assessment-of-nickel-nanoparticles-in-soil-the-use-of-a-full-life-cycle-test-with-enchytraeus-crypticus
#5
Fátima C F Santos, Susana I L Gomes, Janeck J Scott-Fordsmand, Valéria Freitas Mónica J B
Nanoparticles (NPs) such as nickel (Ni) are widely used in several applications. Nevertheless the environmental effects of NiNPs are still poorly understood. In the present study, the toxicity of NiNPs and NiNO3 was assessed using the standard test species in soil ecotoxicology Enchytraeus crypticus (Oligochaeta) in a Full Life Cycle test, adding the endpoints hatching, growth and time to reach maturity, besides survival and reproduction as in the standard OECD Guideline 220 and/or ISO 16387. Overall, NiNO3 was more toxic than NiNPs and toxicity seemed to occur via different mechanisms...
May 10, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28483535/a-battery-of-assays-as-an-integrated-approach-to-evaluate-fungal-and-mycotoxin-inhibition-properties-and-cytotoxic-genotoxic-side-effects-for-the-prioritization-in-the-screening-of-thiosemicarbazone-derivatives
#6
Claudia Zani, Franco Bisceglie, Francesco Maria Restivo, Donatella Feretti, Marianna Pioli, Francesca Degola, Serena Montalbano, Serena Galati, Giorgio Pelosi, Gaia V C Viola, Mauro Carcelli, Dominga Rogolino, Elisabetta Ceretti, Annamaria Buschini
Aflatoxins represent a serious problem for a food economy based on cereal cultivations used to fodder animal and for human nutrition. The aims of our work are two-fold: first, to perform an evaluation of the activity of newly synthesized thiosemicarbazone compounds as antifungal and anti-mycotoxin agents and, second, to conduct studies on the toxic and genotoxic hazard potentials with a battery of tests with different endpoints. In this paper we report an initial study on two molecules: S-4-isopropenylcyclohexen-1-carbaldehydethiosemicarbazone and its metal complex, bis(S-4-isopropenylcyclohexen-1-carbaldehydethiosemicarbazonato)nickel (II)...
May 5, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28473991/toxicity-of-nickel-oxide-nanoparticles-on-a-freshwater-green-algal-strain-of-chlorella-vulgaris
#7
Abdallah Oukarroum, Wassila Zaidi, Mahshid Samadani, David Dewez
A freshwater microalga strain of Chlorella vulgaris was used to investigate toxic effects induced by nickel oxide nanoparticles (NiO-NPs) in suspension. Algal cells were exposed during 96 h to 0-100 mg L(-1) of NiO-NPs and analyzed by flow cytometry. Physicochemical characterization of nanoparticles in tested media showed a soluble fraction (free Ni(2+)) of only 6.42% for 100 mg L(-1) of NiO-NPs, indicating the low solubility capacity of these NPs. Toxicity analysis showed cellular alterations which were related to NiO-NPs concentration, such as inhibition in cell division (relative cell size and granularity), deterioration of the photosynthetic apparatus (chlorophyll synthesis and photochemical reactions of photosynthesis), and oxidative stress (ROS production)...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28452357/solid-state-synthesis-of-ordered-mesoporous-carbon-catalysts-via-a-mechanochemical-assembly-through-coordination-cross-linking
#8
Pengfei Zhang, Li Wang, Shize Yang, Jennifer A Schott, Xiaofei Liu, Shannon M Mahurin, Caili Huang, Yu Zhang, Pasquale F Fulvio, Matthew F Chisholm, Sheng Dai
Ordered mesoporous carbons (OMCs) have demonstrated great potential in catalysis, and as supercapacitors and adsorbents. Since the introduction of the organic-organic self-assembly approach in 2004/2005 until now, the direct synthesis of OMCs is still limited to the wet processing of phenol-formaldehyde polycondensation, which involves soluble toxic precursors, and acid or alkali catalysts, and requires multiple synthesis steps, thus restricting the widespread application of OMCs. Herein, we report a simple, general, scalable and sustainable solid-state synthesis of OMCs and nickel OMCs with uniform and tunable mesopores (∼4-10 nm), large pore volumes (up to 0...
April 28, 2017: Nature Communications
https://www.readbyqxmd.com/read/28448768/toxicity-identification-and-evaluation-tie-of-a-petroleum-refinery-wastewater
#9
Sarah D A Daflon, Igor L Guerra, Márcia V Reynier, Ana C Cerqueira, Clarice R Botta, Juacyara C Campos
Petroleum refineries generate large amounts of wastewaters, which can have acute/chronic toxicity toward aquatic organisms. Previous studies have shown that many contaminants can be responsible for this toxicity, among them ammonia, sulfide, cyanide, phenols and hydrocarbons. In the study reported herein, the cause of the chronic toxicity of a biotreated petroleum refinery wastewater was investigated by applying the TIE methodology using the microcrustacean Ceriodaphnia dubia. Five samples were analyzed, and the results suggest that copper is the primary toxicant, showing a strong correlation with wastewater toxicity in Phase III...
April 27, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28447152/expression-changes-in-metal-resistance-genes-in-microbacterium-liquefaciens-under-nickel-and-vanadium-exposure
#10
Grisel Fierros-Romero, José A Wrosek-Cabrera, Marlenne Gómez-Ramírez, Reynaldo C Pless, A M Rivas-Castillo, Norma G Rojas-Avelizapa
Microbacterium liquefaciens MNSH2-PHGII-2 is a nickel-vanadium-resistant bacterium isolated from mine tailings located in Guanajuato, Mexico. In PHGII liquid media, M. liquefaciens has the ability to remove 29.5 ppm of Ni and 168.3 ppm of V. The present study reports, for the first time in M. liquefaciens, the presence of the genes nccA (Ni-Co-Cd resistance), hant (high-affinity nickel transporter), smtA, a metal-binding protein gene, and VAN2 (V resistance), which showed an increased expression under exposure to 200 ppm of Ni and 200 ppm of V during the logarithmic growth phase of the microorganism in PHGII liquid media...
April 27, 2017: Current Microbiology
https://www.readbyqxmd.com/read/28444474/compost-and-sulfur-affect-the-mobilization-and-phyto-availability-of-cd-and-ni-to-sorghum-and-barnyard-grass-in-a-spiked-fluvial-soil
#11
Sabry M Shaheen, Ali A Balbaa, Alaa M Khatab, Jörg Rinklebe
Soil reclamation via additives can cause contradictory effects on the mobilization of toxic elements in soils under dry and wet conditions. Therefore, our aim was to investigate the impact of compost and sulfur in two rates (1.25 and 2.5%) on fractionation, mobilization, and phyto-availability of cadmium (Cd) and nickel (Ni) to sorghum (dry soil) and barnyard grass (wet soil) in a fluvial soil spiked with 25 mg Cd or 200 mg Ni/kg soil. Compost decreased the solubility and mobilization of Cd (especially in dry soil) and Ni (in both soils)...
April 25, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28442728/hybrid-energy-storage-of-ni-oh-2-coated-n-doped-graphene-aerogel-n-doped-graphene-aerogel-for-the-replacement-of-nicd-and-nimh-batteries
#12
Pichamon Sirisinudomkit, Pawin Iamprasertkun, Atiweena Krittayavathananon, Tanut Pettong, Peerapan Dittanet, Montree Sawangphruk
Although Nickel-Cadmium (NiCd) and Nickel-metal hydride (NiMH) batteries have been widely used, their drawbacks including toxic Cd and expensive La alloy at the negative electrodes, low energy density (40-60 Wh/kg for NiCd and 140-300 Wh/L for NiMH), low power density (150 W/kg for NiCd and 1000 W/kg for NiMH), and low working potential (1.2 V) limit their applications. In this work, Cd and La alloy were replaced with N-doped reduced graphene oxide aerogel (N-rGOae) providing a hybrid energy storage (HES) having the battery and supercapacitor effects...
April 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28433597/prediction-of-toxicity-of-zinc-and-nickel-mixtures-to-artemia-sp-at-various-salinities-from-additivity-to-antagonism
#13
Évila Pinheiro Damasceno, Lívia Pitombeira de Figuerêdo, Marcionília Fernandes Pimentel, Susana Loureiro, Letícia Veras Costa-Lotufo
Few studies have examined the toxicity of metal mixtures to marine organisms exposed to different salinities. The aim of the present study was to investigate the acute toxicity of zinc and nickel exposures singly and in combination to Artemia sp. under salinities of 10, 17, and 35 psu. The mixture concentrations were determined according to individual toxic units (TUs) to follow a fixed ratio design. Zinc was more toxic than nickel, and both their individual toxicities were higher at lower salinities. These changes in toxicity can be attributed to the Biotic Ligand Model (BLM) rather than to metal speciation...
August 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28412490/serpentine-soils-affect-heavy-metal-tolerance-but-not-genetic-diversity-in-a-common-mediterranean-ant
#14
Filippo Frizzi, Alberto Masoni, Mine Çelikkol, Enrico Palchetti, Claudio Ciofi, Guido Chelazzi, Giacomo Santini
Natural habitats with serpentine soils are rich in heavy metal ions, which may significantly affect ecological communities. Exposure to metal pollutants results, for instance, in a reduction of population genetic diversity and a diffused higher tolerance towards heavy metals. In this study, we investigated whether chronic exposure to metals in serpentine soils affect accumulation patterns, tolerance towards metal pollutants, and genetic diversity in ants. In particular, we studied colonies of the common Mediterranean ant, Crematogaster scutellaris, along a contamination gradient consisting of two differently contaminated forests and a reference soil with no geogenic contamination...
April 10, 2017: Chemosphere
https://www.readbyqxmd.com/read/28412307/the-9th-conference-on-metal-toxicity-and-carcinogenesis-the-conference-overview
#15
James T F Wise, Lei Wang, Zhuo Zhang, Xianglin Shi
Heavy metals, such as arsenic, chromium, cadmium, nickel, mercury, and uranium are known to cause many human diseases and health complications after occupational or environmental exposure. Consequently, metals are environmental health concerns. This manuscript is an overview of the 9th Conference on Metal Toxicity and Carcinogenesis held in October 2016 in Lexington, Kentucky. Since 2000, this biennial meeting brings together experts in the field to discuss current and prospective research in an effort to advance research pertaining to metal toxicity and carcinogenesis...
April 12, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28379009/general-and-mild-nickel-catalyzed-cyanation-of-aryl-heteroaryl-chlorides-with-zn-cn-2-key-roles-of-dmap
#16
Xingjie Zhang, Aiyou Xia, Haoyi Chen, Yuanhong Liu
A new and general nickel-catalyzed cyanation of hetero(aryl) chlorides using less toxic Zn(CN)2 as the cyanide source has been developed. The reaction relies on the use of inexpensive NiCl2·6H2O/dppf/Zn as the catalytic system and DMAP as the additive, allowing the cyanation to occur under mild reaction conditions (50-80 °C) with wide functional group tolerance. DMAP was found to be crucial for successful transformation, and the reaction likely proceeds via a Ni(0)/Ni(II) catalysis based on mechanistic studies...
April 5, 2017: Organic Letters
https://www.readbyqxmd.com/read/28372752/ultrasensitive-and-selective-4-aminophenol-chemical-sensor-development-based-on-nickel-oxide-nanoparticles-decorated-carbon-nanotube-nanocomposites-for-green-environment
#17
Mohammad Musarraf Hussain, Mohammed M Rahman, Abdullah M Asiri
Nickel oxide nanoparticles decorated carbon nanotube nanocomposites (NiO·CNT NCs) were prepared in a basic medium by using facile wet-chemical routes. The optical, morphological, and structural properties of NiO·CNT NCs were characterized using Fourier transformed infra-red (FT-IR), Ultra-violet visible (UV/Vis) spectroscopy, field-emission scanning electron microscopy (FESEM), X-ray energy dispersed spectroscopy (XEDS), X-ray photoelectron spectroscopy (XPS), and powder X-ray diffraction (XRD) methods. Selective 4-aminophenol (4-AP) chemical sensor was developed by a flat glassy carbon electrode (GCE, surface area: 0...
March 2017: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/28371710/redox-chemistry-of-nickel-in-soils-and-sediments-a-review
#18
Jörg Rinklebe, Sabry M Shaheen
Knowledge on the redox geochemistry of Ni is behind in comparison to other heavy metals. Hence, this article reviews the direct and indirect impact of redox potential (EH) on mobilization and release dynamics of Ni in soils and sediments across the world. Nickel can show a different behavior in response to EH. Mobilization of Ni increased at low EH in various soils; however, oxic conditions can lead to an increased mobilization of Ni in other soils. Those differences occur because the mobilization of Ni is often indirectly affected by EH, e...
July 2017: Chemosphere
https://www.readbyqxmd.com/read/28342047/blood-toxic-metals-and-hemoglobin-levels-in-mexican-children
#19
Guadalupe López-Rodríguez, Marcos Galván, Marco González-Unzaga, Juan Hernández Ávila, M Pérez-Labra
Metal toxicity can cause hematologic abnormalities and hemolysis. To evaluate the relationship of anemia with metal contamination in children, the following elements were quantified in dry blood: silicon, chromium, lead, titanium, vanadium, nickel, arsenic, manganese, and cadmium. A total of 88 samples of anemic children and 208 of non-anemic children aged 6-12 years were analyzed. Lead (35.1%), chromium (24.3%), vanadium (24.3%), nickel (45.6%), and silicon (48.6%) were identified in the samples, with titanium only detected in anemic children...
April 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28340386/constructed-ils-coated-porous-magnetic-nickel-cobaltate-hexagonal-nanoplates-sensing-materials-for-the-simultaneous-detection-of-cumulative-toxic-metals
#20
Yuanyuan Dong, Lei Zhang
The different morphologies of magnetic nickel cobaltate (NiCo2O4) electrocatalysts, consisting of nanoparticles (NiCo2O4-N), nanoplates (NiCo2O4-P) and microspheres (NiCo2O4-S) were fabricated. It was found that the electrocatalytic properties of the sensing materials were strongly dependent on morphology and specific surface area. The porous NiCo2O4 hexagonal nanoplates coupled with ILs as modified materials (ILs@NiCo2O4-P) for the simultaneous determination of thallium (Tl(+)), lead (Pb(2+)) and copper (Cu(2+)), exhibited high sensitivity, long-time stability and good repeatability...
March 18, 2017: Journal of Hazardous Materials
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