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nickel toxicity

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https://www.readbyqxmd.com/read/29043797/metal-oxides-in-surface-sediment-control-nickel-bioavailability-to-benthic-macroinvertebrates
#1
Raissa Marques Mendonca, Jennifer M Daley, Michelle L Hudson, Christian Schlekat, G Allen Burton, David Costello
In aquatic ecosystems, the cycling and toxicity of nickel (Ni) are coupled to other elemental cycles that can limit its bioavailability. Current sediment risk assessment approaches consider acid-volatile sulfide (AVS) as the major binding phase for Ni, but have not yet incorporated ligands that are present in oxic sediments. Our study aimed to assess how metal oxides play a role in Ni bioavailability in surficial sediments exposed to effluent from two mine sites. We coupled spatially explicit sediment geochemistry (i...
October 18, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/29040823/urea-increased-nickel-and-copper-accumulation-in-the-leaves-of-egeria-densa-planch-casp-and-ceratophyllum-demersum-l-during-short-term-exposure
#2
Maria Maleva, Galina Borisova, Nadezhda Chukina, Adarsh Kumar
In the present study, two fresh water plant species Egeria densa (Planch.) Casp. and Ceratophyllum demersum L. were subjected to separate and combined action of urea (2mМ) and metals (Ni and Cu, 10μM) to investigate the phytoremediation potential of these two submerged macrophytes during short-term experiments (48h). Both submerged macrophytes demonstrated high accumulative potential for Ni and Cu (average bioconcentration factors were 2505 for Ni and 3778 for Cu). The urea (2 mM) was not significantly toxic for studied plant species...
October 14, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29036859/from-awareness-to-action-sudbury-mining-and-occupational-disease-in-a-time-of-change
#3
Desre M Kramer, D Linn Holness, Emily Haynes, Keith McMillan, Colin Berriault, Sheila Kalenge, Nancy Lightfoot
BACKGROUND: Miners work in highly hazardous environments, but surprisingly, there are more fatalities from occupational diseases, including cancers, than from fatalities from injuries. Over the last few decades, the mining environment has become safer with fewer injuries and less exposure to the toxins that lead to occupational disease. There have been improvements in working conditions, and a reduction in the number of workers exposed, together with an overall improvement in the health of miners...
October 8, 2017: Work: a Journal of Prevention, Assessment, and Rehabilitation
https://www.readbyqxmd.com/read/29032515/oxidative-stress-and-heavy-metals-in-plants
#4
Radka Fryzova, Miroslav Pohanka, Pavla Martinkova, Hana Cihlarova, Martin Brtnicky, Jan Hladky, Jindrich Kynicky
Oxidative stress is a pathological process related to not only animal kingdom but also plants. Regarding oxidative stress in plants, heavy metals are frequently discussed as causative stimuli with relevance to ecology. Because heavy metals have broad technological importance, they can easily contaminate the environment. Much of previous effort regarding the harmful impact of the heavy metals was given to their toxicology in the animals and humans. Their implication in plant pathogeneses is less known and remains underestimated...
October 15, 2017: Reviews of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29028538/nitric-oxide-induces-rice-tolerance-to-excessive-nickel-by-regulating-nickel-uptake-reactive-oxygen-species-detoxification-and-defense-related-gene-expression
#5
Muhammad Rizwan, Mohammad Golam Mostofa, Muhammad Zulfiqar Ahmad, Muhammad Imtiaz, Sajid Mehmood, Muhammad Adeel, Zhihua Dai, Zheyong Li, Omar Aziz, Yihui Zhang, Shuxin Tu
Soil contamination with nickel (Ni) is a persistent threat to crop production worldwide. The present study examined the putative roles of nitric oxide (NO) in improving Ni-tolerance in rice. Our findings showed that application of exogenous sodium nitroprusside (SNP), a NO donor, significantly improved the growth performance of rice seedlings when grown under excessive Ni. The enhanced Ni-tolerance of rice prompted by SNP could be ascribed to its ability to regulate Ni uptake, decrease Ni-induced oxidative stress as evidenced by reduced levels of hydrogen peroxide, malondialdehyde, and electrolyte leakage in Ni-stressed plants...
September 30, 2017: Chemosphere
https://www.readbyqxmd.com/read/29019667/mixture-toxicity-of-nickel-and-microplastics-with-different-functional-groups-on-daphnia-magna
#6
Dokyung Kim, Yooeun Chae, Youn-Joo An
In recent years, discarded plastic has become an increasingly prevalent pollutant in aquatic ecosystems. These plastic wastes decompose into microplastics, which not only pose a direct threat to aquatic organisms but also an indirect threat via adsorption of other aquatic pollutants. In this study, we investigated the toxicities of variable and fixed combinations of two types of microplastics [one coated with a carboxyl group (PS-COOH) and the other lacking this functional group (PS)] with the heavy metal nickel (Ni) on Daphnia magna and calculated mixture toxicity using a toxic unit model...
October 11, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28994612/metal-concentrations-in-samples-of-frozen-cephalopods-cuttlefish-octopus-squid-and-shortfin-squid-an-evaluation-of-dietary-intake
#7
D Sangiuliano, C Rubio, A J Gutiérrez, D González-Weller, C Revert, A Hardisson, E Zanardi, S Paz
Cephalopods are an important source of nutrients and some of the most widely consumed marine foods. However, because of contamination of the oceans and the bioaccumulative nature of toxic metals, these foods may pose a health risk. For this reason, the concentrations of some trace elements (chromium [Cr], lithium, strontium [Sr], copper [Cu], and nickel) and toxic metals (aluminum [Al], cadmium, and lead) were determined in 65 frozen samples of cuttlefish, octopus, common squid, and shortfin squid by inductively coupled plasma optical emission spectrometry to evaluate dietary intake and toxic risk...
October 10, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28990266/nickel-catalyzed-cyanation-of-aryl-chlorides-and-triflates-using-butyronitrile-merging-retro-hydrocyanation-with-cross-coupling
#8
Peng Yu, Bill Morandi
We describe here a nickel-catalyzed cyanation reaction of aryl (pseudo)halides that employs butyronitrile as a cyanating reagent instead of highly toxic cyanide salts. A dual catalytic cycle merging retro-hydrocyanation and cross-coupling enables the conversion of a broad array of aryl chlorides and aryl/vinyl triflates into their corresponding nitriles. This new reaction provides a strategically distinct approach to the safe preparation of aryl cyanides, which are essential compounds in agrochemistry and medicinal chemistry...
October 8, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28988324/potential-sex-differences-relative-to-autism-spectrum-disorder-and-metals
#9
REVIEW
Aisha S Dickerson, Ran S Rotem, MacKinsey A Christian, Vy T Nguyen, Aaron J Specht
PURPOSE OF REVIEW: This study aims to summarize the current body of literature on the relationship between various toxic metals exposures (i.e., aluminum, antimony, arsenic, beryllium, cadmium, chromium, lead, manganese, and nickel) and autism spectrum disorder (ASD), with a focus on potential sex differences in these associations. RECENT FINDINGS: Sex differences in ASD diagnosis and mutagenic effects of toxic exposures indicate that sex differences may play a major part in the causal relationship of any potential associations seen; however, we were only able to find three studies that reported on sex differences in observed associations with toxic metals exposure and ASD...
October 7, 2017: Current Environmental Health Reports
https://www.readbyqxmd.com/read/28975699/toxicity-of-nickel-to-tropical-freshwater-and-sediment-biota-a-critical-literature-review-and-gap-analysis
#10
REVIEW
Monique T Binet, Merrin S Adams, Francesca Gissi, Lisa A Golding, Chris Schlekat, Emily Garman, Graham Merrington, Jennifer L Stauber
Over two-thirds of the world's nickel lateritic deposits are in tropical regions, and just less than half are within South-East Asia and Melanesia (SEAM). With increasing nickel mining and processing in SEAM, environmental risk assessment tools are required to ensure sustainable development. Currently, there are no tropical-specific water or sediment quality guideline values (GVs) for nickel, and the appropriateness of applying GVs derived for temperate systems (e.g. Europe) to tropical ecosystems is unknown...
October 3, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28975566/fate-of-toxic-metals-during-estuarine-mixing-of-fresh-water-with-saline-water
#11
Hamed Farajnejad, Abdolreza Karbassi, Mehdi Heidari
Metals are among the most common environmental pollutants, and their presence in high concentration in waters and biota have devastating effects on flora, fauna, and human health. Flocculation process of metals during estuarine mixing can reduce the environmental hazards of metals and also can provide micronutrients to the aquatic system. The present investigation provides a thorough study of eliminating colloidal elements of copper, manganese, nickel, lead, and zinc during estuarine mixing of Shalmanrood River water with Caspian Sea water in Iran...
October 4, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28966480/the-memory-lymphocyte-immunostimulation-assay-in-immune-system-disorders-is-useful-or-useless
#12
Maria Vadalà, Carmen Laurino, Beniamino Palmieri
AIM: The aim of the study was to evaluate the clinical relevance, sensitivity and specificity of in vitro blood test, Memory Lymphocyte ImmunoStimulation Assay (MELISA(®)), in genetically predisposed patients that suffer by autoimmune/inflammatory syndrome induced by adjuvants, after HPV-vaccination and that could have a high metal hypersensitivity. MATERIALS AND METHODS: Sixteen girls (aged 12-24 years) that developed long-lasting and invalidating somatoform symptoms occurring within 20 days postvaccination are included in this descriptive study...
October 2017: Journal of Laboratory Physicians
https://www.readbyqxmd.com/read/28961501/nanoparticles-and-modified-clays-influenced-distribution-of-heavy-metals-fractions-in-a-light-textured-soil-amended-with-sewage-sludges
#13
Morteza Feizi, Mohsen Jalali, Giancarlo Renella
We comparatively assessed the effect of modified clays (MCs) (zeolite and bentonite) and nanoparticles (NPs) (ZnO and MgO) on the distribution of cadmium (Cd), copper (Cu), nickel (Ni) and zinc (Zn) fractions in a light-textured soil amended with five sewage sludges (SSs) differed in chemical properties during a 92-day incubation experiment in the laboratory. Results indicated that presence of adsorbents and incubation time were critical parameters in stabilizing metals in SS-amended soil. The adsorbents that significantly decreased the easily soluble and exchangeable of metals in SS-amended soil (rate 2%) were bentonite, ZnO and MgO for Cd and Cu, ZnO and MgO for Ni, and bentonite and MgO for Zn...
September 18, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28957765/zerovalent-iron-in-conjunction-with-surfactants-to-remediate-sediments-contaminated-by-polychlorinated-biphenyls-and-nickel
#14
Yingxin Wu, Yu Wang, Xiongfei Huang, Siyuan Chen, Xi Zhong, Zhuobiao Ni, Xinde Cai, Xiaowen Liu, Marie-Odile Simonnot, Rongliang Qiu
Dredging and disposal is commonly used for cleanup of contaminated sediments, leaving the relocated sediments still in need of remediation. In this study, the feasibility of two approaches to using zerovalent iron (ZVI) in conjunction with surfactants to remediate sediments contaminated by polychlorinated biphenyls (PCBs) and Ni was investigated. Approach A is surfactant desorption followed by ZVI treatment and approach B is a simple mixture of ZVI and sediment in surfactant solution. Results of approach A show that 65...
September 13, 2017: Chemosphere
https://www.readbyqxmd.com/read/28957501/genomics-of-adaptation-depends-on-the-rate-of-environmental-change-in-experimental-yeast-populations
#15
Florien A Gorter, Martijn F L Derks, Joost van den Heuvel, Mark G M Aarts, Bas J Zwaan, Dick de Ridder, J Arjan G M de Visser
The rate of directional environmental change may have profound consequences for evolutionary dynamics and outcomes. Yet, most evolution experiments impose a sudden large change in the environment, after which the environment is kept constant. We previously cultured replicate Saccharomyces cerevisiae populations for 500 generations in the presence of either gradually increasing or constant high concentrations of the heavy metals cadmium, nickel, and zinc. Here, we investigate how each of these treatments affected genomic evolution...
October 1, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28947985/survey-of-urinary-nickel-in-peritoneal-dialysis-patients
#16
Ya-Ching Huang, Hsiao-Chen Ning, Shang-Syuan Chen, Chia-Ni Lin, I-Kwan Wang, Shu-Man Weng, Cheng-Hao Weng, Ching-Wei Hsu, Wen-Hung Huang, Jang-Jih Lu, Tsu-Lan Wu, Tzung-Hai Yen
This study surveyed urinary nickel concentrations in peritoneal dialysis (PD) patients, and analyzed the association of urinary nickel concentrations with clinical outcomes and inflammatory biomarkers. In total, 50 PD patients and 50 healthy controls were recruited for this study. All participants were examined for the presence of toxic trace elements (antimony, arsenic, bismuth, cadmium, copper, manganese, mercury, nickel, lead, tellurium, thallium and zinc) in their urine by using inductively coupled plasma mass spectrometry (ICP-MS)...
September 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28941199/capped-mesoporous-silica-nanoparticles-for-the-selective-and-sensitive-detection-of-cyanide
#17
Sameh El Sayed, Maurizio Licchelli, Ramón Martínez-Máñez, Félix Sancenón
The development of easy and affordable methods for the detection of cyanide is of great significance due to the high toxicity of this anion and the potential risks associated with its pollution. Herein, optical detection of cyanide in water has been achieved by using a hybrid organic-inorganic nanomaterial. Mesoporous silica nanoparticles were loaded with [Ru(bipy)3 ](2+) , functionalized with macrocyclic nickel(II) complex subunits, and capped with a sterically hindering anion (hexametaphosphate). Cyanide selectively induces demetallation of nickel(II) complexes and the removal of capping anions from the silica surface, allowing the release of the dye and the consequent increase in fluorescence intensity...
September 22, 2017: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/28915486/ultrathin-beta-nickel-hydroxide-nanosheets-grown-along-multi-walled-carbon-nanotubes-a-novel-nanohybrid-for-enhancing-flame-retardancy-and-smoke-toxicity-suppression-of-unsaturated-polyester-resin
#18
Yun Hai, Saihua Jiang, Xiaodong Qian, Shuidong Zhang, Ping Sun, Bo Xie, Ningning Hong
Novel nanohybrid (β-Ni(OH)2-CNTs) obtained by ultrathin Beta-Nickel hydroxide (β-Ni(OH)2) nanosheets grown along multi-walled carbon nanotubes (CNTs) was successfully synthesized and then incorporated into UPR to prepare UPR/β-Ni(OH)2-CNTs nanocomposites. Structure of β-Ni(OH)2-CNTs nanohybrid was confirmed by X-ray diffraction, scanning electron microscopy measurements. Compared with single CNTs or β-Ni(OH)2, the dispersion of β-Ni(OH)2-CNTs in UPR was improved greatly. And the UPR/β-Ni(OH)2-CNTs nanocomposites exhibited significant improvements in flame retardancy, smoke suppression, and mechanical properties, including decreased peak heat release rate by 39...
September 7, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28902984/fine-and-clean-photothermally-controlled-nir-drug-delivery-from-biocompatible-nickel-bis-dithiolene-containing-liposomes
#19
Kenny Mebrouk, Mathieu Ciancone, Thomas Vives, Sandrine Cammas-Marion, Thierry Benvegnu, Catherine Le Goff-Gaillard, Yannick Arlot-Bonnemains, Marc Fourmigué, Franck Camerel
This work demonstrates that metal-bis(dithiolene) complexes can be efficiently incorporated inside organic nanocarriers and, that under near-infrared (NIR) irradiation, their high photothermal activity can be finely used to release encapsulated drugs on demand. In contrast to gold nanoparticles and other organic NIR dyes, nickel-bis(dithiolene) complexes do not produce singlet oxygen under irradiation, a highly desirable characteristic to preserve the chemical integrity and activity of the loaded drug during the NIR-triggered release from the nanocarriers...
September 13, 2017: ChemMedChem
https://www.readbyqxmd.com/read/28898751/treatment-of-model-solutions-and-wastewater-containing-selected-hazardous-metal-ions-using-a-chitin-lignin-hybrid-material-as-an-effective-sorbent
#20
Przemysław Bartczak, Łukasz Klapiszewski, Marcin Wysokowski, Izabela Majchrzak, Weronika Czernicka, Adam Piasecki, Hermann Ehrlich, Teofil Jesionowski
A chitin/lignin material with defined physicochemical and morphological properties was used as an effective adsorbent of environmentally toxic metals from model systems. Particularly significant is its use in the neutralization of real industrial wastes. The ions Ni(2+), Cu(2+), Zn(2+) and Pb(2+) were adsorbed on the functional sorbent, confirming the high sorption capacity of the newly obtained product, primarily due to the presence on its surface of numerous active functional groups from the component biopolymers...
December 15, 2017: Journal of Environmental Management
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