32,993 results match your criteria Arsenic


Heavy metals in the Arctic: Distribution and enrichment of five metals in Alaskan soils.

PLoS One 2020 3;15(6):e0233297. Epub 2020 Jun 3.

Department of Natural Resources and the Environment, University of New Hampshire, Durham, New Hampshire, United States of America.

Metal contamination of food and water resources is a known public health issue in Arctic and sub-Arctic communities due to the proximity of many communities to mining and drilling sites. In addition, permafrost thaw may release heavy metals sequestered in previously frozen soils, potentially contaminating food and water resources by increasing the concentration of metals in freshwater, plants, and wildlife. Here we assess the enrichment of selected heavy metals in Alaskan soils by synthesizing publicly available data of soil metal concentrations. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0233297PLOS

Land Use in Habitat Affects Metal Concentrations in Wild Lizards Around a Former Lead Mining Site.

Environ Sci Technol 2020 Jun 3. Epub 2020 Jun 3.

We investigated the potential effects of different land use and other environment factors on animals living in a contaminated environment. The study site in Kabwe, Zambia, is currently undergoing urban expansion, while lead contamination from former mining activities is still prevalent. We focused on a habitat-generalist lizards (Trachylepis wahlbergii). Read More

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http://dx.doi.org/10.1021/acs.est.0c00150DOI Listing

Health risk assessment of heavy metals and strontium in groundwater used for drinking and cooking in 58 villages of Prakasam district, Andhra Pradesh, India.

Environ Geochem Health 2020 Jun 2. Epub 2020 Jun 2.

Food Safety Division, Department of Food Toxicology, ICMR-National Institute of Nutrition, Jamai Osmania PO, Tarnaka, Hyderabad, India.

Groundwater is one of the most important sources of water for drinking and cooking in rural India. A total of 382 groundwater samples were collected from 58 villages and analyzed for HMs and Sr by inductively coupled plasma mass spectrometer. The average concentrations of HMs and Sr in water was in the order of strontium (Sr) > arsenic (As) > chromium (Cr) > lead (Pb) > mercury (Hg) > cadmium (Cd). Read More

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http://dx.doi.org/10.1007/s10653-020-00596-1DOI Listing

The interception effect of heavy metals in different types of Chinese fir plantations.

Environ Geochem Health 2020 Jun 1. Epub 2020 Jun 1.

College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, 410004, China.

The aim of this research is to investigate the interception effect of heavy metals, such as zinc (Zn), copper (Cu), lead (Pb), arsenic (As), and cadmium (Cd) in different ages of Chinese fir plantations. The study was conducted in 21-year-old (CF21, near mature stand) and 29-year-old (CF29, old stand) pure Chinese fir forest stands (CF) as well as a mixed coniferous and broad-leaved forest stand (MF) in Huitong from November 2016 to October 2017. The study results revealed the variation ranges of interception of Cu, Zn, Cd, As, and Pb by the research forest stands were respectively, 3. Read More

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http://dx.doi.org/10.1007/s10653-020-00586-3DOI Listing

Microcosm based analysis of arsenic release potential of Bacillus sp. strain IIIJ3-1 under varying redox conditions.

World J Microbiol Biotechnol 2020 Jun 2;36(6):87. Epub 2020 Jun 2.

Environmental Microbiology and Genomics Laboratory, Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India.

The role of indigenous bacteria in mobilization of sediment bound arsenic (As) into groundwater is investigated using subsurface sediment from Brahmaputra River Basin (BRB) and the Bacillus sp. strain IIIJ3-1, an indigenous species to BRB. Anaerobic sediment microcosms with varying organic carbon sources and terminal electron acceptors (TEAs) are used to illustrate the role of the test bacterium in As mobilization. Read More

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http://dx.doi.org/10.1007/s11274-020-02860-zDOI Listing

Low Doses of Arsenic in a Mouse Model of Human Exposure and in Neuronal Culture Lead to S-Nitrosylation of Synaptic Proteins and Apoptosis via Nitric Oxide.

Int J Mol Sci 2020 May 31;21(11). Epub 2020 May 31.

Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.

Background: Accumulating public health and epidemiological literature support the hypothesis that arsenic in drinking water or food affects the brain adversely.

Methods: Experiments on the consequences of nitric oxide (NO) formation in neuronal cell culture and mouse brain were conducted to probe the mechanistic pathways of nitrosative damage following arsenic exposure.

Results: After exposure of mouse embryonic neuronal cells to low doses of sodium arsenite (SA), we found that Ca was released leading to the formation of large amounts of NO and apoptosis. Read More

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http://dx.doi.org/10.3390/ijms21113948DOI Listing

Shifting the Specificity of Biosensor from Inorganic Arsenic to Phenylarsine Oxide through Genetic Engineering.

Sensors (Basel) 2020 May 30;20(11). Epub 2020 May 30.

Department of Environmental Health Science, Konkuk University, Seoul 05029, Korea.

It has recently been discovered that organic and inorganic arsenics could be detrimental to human health. Although organic arsenic is less toxic than inorganic arsenic, it could form inorganic arsenic through chemical and biological processes in environmental systems. In this regard, the availability of tools for detecting organic arsenic species would be beneficial. Read More

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http://dx.doi.org/10.3390/s20113093DOI Listing

Germanium as a tool to dissect boron toxicity effects in barley and wheat.

Funct Plant Biol 2013 Jul;40(6):618-627

Australian Centre for Plant Functional Genomics, School of Agriculture, Food and Wine, The University of Adelaide, Urrbrae, SA 5064, Australia.

Tolerance to boron (B) toxicity in barley (Hordeum vulgare L.) is partially attributable to HvNIP2;1, an aquaporin with permeability to B, as well as to silicon, arsenic and germanium (Ge). In this study, we mapped leaf symptoms of Ge toxicity in a doubled-haploid barley population (Clipper×Sahara 3771). Read More

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http://dx.doi.org/10.1071/FP12329DOI Listing

Spatial analysis and GIS mapping of regional hotspots and potential health risk of fluoride concentrations in groundwater of northern Tanzania.

Sci Total Environ 2020 May 21;735:139584. Epub 2020 May 21.

International Network for Environment and Health (INEH), School of Geography and Archaeology & Ryan Institute, National University of Ireland, Galway, Ireland.

Safe drinking water supply systems in naturally contaminated hydrogeological environments require precise geoinformation on contamination hotspots. Spatial statistical methods and GIS were used to study fluoride occurrence in groundwater and identify significant spatial patterns using fluoride concentrations. The global and local Morans I indices were used. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.139584DOI Listing

Comment on "Thioarsenite Detection and Implications for Arsenic Transport in Groundwater".

Environ Sci Technol 2020 Jun 2. Epub 2020 Jun 2.

Department of Environmental Geochemistry, Bayreuth Center for Ecology and Environmental Research (BAYCEER), University of Bayreuth, 95440 Bayreuth, Germany.

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http://dx.doi.org/10.1021/acs.est.0c01641DOI Listing

Nature of the Arsonium-Ylide Ph3As=CH2 and a Uranium(IV) Arsonium-Carbene Complex.

Angew Chem Int Ed Engl 2020 Jun 2. Epub 2020 Jun 2.

The University of Manchester, School of Chemistry, UNITED KINGDOM.

Treatment of [Ph3EMe][I] with [Na{N(SiMe3)2}] affords the ylides [Ph3E=CH2] (E = As, 1As; P, 1P). For 1As this overcomes prior difficulties in the synthesis of this classical arsonium-ylide that have historically impeded its wider study. The structure of 1As has now been determined, 45 years after it was first convincingly isolated, and compared to 1P, confirming the long-proposed hypothesis of increasing pyramidalisation of the ylide-carbon, highlighting the increasing dominance of E+-C- dipolar resonance form (sp3-C) over the E=C ene p-bonded form (sp2-C), as group 15 is descended. Read More

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http://dx.doi.org/10.1002/anie.202004983DOI Listing

Recommended Sampling Intervals for Arsenic in Private Wells.

Ground Water 2020 Jun 2. Epub 2020 Jun 2.

Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, 10964.

Geogenic arsenic in drinking water is a worldwide problem. For private well owners, testing (e.g. Read More

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http://dx.doi.org/10.1111/gwat.13020DOI Listing

In-vitro bioaccessibility and bioavailability of heavy metals in mineral clay complex used in natural health products.

Sci Rep 2020 Jun 1;10(1):8823. Epub 2020 Jun 1.

Food, Nutrition, and Health, Faculty of Land & Food Systems. 2205 East Mall, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada.

Commercial mineral clays that claim to have healing properties are also known to contain trace amounts of heavy metals, albeit the risk of consuming many of them is not entirely known. The primary objective of this study was to evaluate the in vitro bioaccessibility and bioavailability of Arsenic (As), Cadmium (Cd) and Lead (Pb) in mineral clay samples collected from the Sierra Mountains (USA) using the Unified Bioaccessibility Research Group of Europe (UBM) method and the Caco-2 permeability assay, respectively. After UMB-gastric (UBM-G) digestion, As and Pb bioaccessibility were lower compared to Cd and decreased further in the UMB-gastrointestinal (UBM-GI) assay. Read More

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http://dx.doi.org/10.1038/s41598-020-65449-4DOI Listing

Accumulation and bioaccessibility of toxic metals in root tubers and soils from gold mining and farming communities in the Ashanti region of Ghana.

Int J Environ Health Res 2020 Jun 2:1-11. Epub 2020 Jun 2.

School of Environment and Sustainability, Royal Roads University , Victoria, Canada.

The presence of metal contaminants in agricultural soils and subsequent uptake by food crops can pose serious human health risk. In this study, we assessed the levels of toxic metals - arsenic, chromium, copper, iron, manganese, nickel, and zinc - in soils and some edible root tuber crops from two gold mining and two non-mining communities in Ghana to evaluate the potential human health risks associated with exposure to these metals. Concentrations of the metals in 154 soil and edible root tuber samples were analyzed using field portable x-ray fluorescence spectrometer prior to confirmation by inductively coupled plasma mass spectrometry. Read More

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http://dx.doi.org/10.1080/09603123.2020.1772203DOI Listing

Exogenous application of methyl jasmonate alleviates arsenic toxicity by modulating its uptake and translocation in rice (Oryza sativa L.).

Ecotoxicol Environ Saf 2020 May 29;201:110735. Epub 2020 May 29.

Molecular Biology and Biotechnology Division, Council of Scientific & Industrial Research-National Botanical Research Institute (CSIR-NBRI), Lucknow, 226001, India. Electronic address:

Methyl jasmonate (Me-JA) is a plant growth regulator known for modulating plant responses to various abiotic and biotic stresses. The unavoidable arsenic (As) contamination in rice (Oryza sativa) results in reduced crop yield and greater carcinogenic risk to humans. The present work examines the significance of Me-JA induced molecular signaling and tolerance towards arsenic toxicity in rice. Read More

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http://dx.doi.org/10.1016/j.ecoenv.2020.110735DOI Listing

Characterization of sediment contaminants in Arctic lagoons and estuaries.

Mar Pollut Bull 2020 Mar 17;152:110873. Epub 2020 Feb 17.

University of Alaska Fairbanks, Institute of Marine Science, 905 N. Koyukuk Dr. 245 O'Neill Building, Fairbanks, AK 99775-7220, United States of America.

Baseline characterizations of estuarine sediments in Chukchi and Beaufort Seas, were conducted. Concentrations of 194 organic and elemental chemicals were analyzed in sediment and fish, plus stable isotopes of carbon and nitrogen. The estuaries are shallow embayments, with little shoreline relief. Read More

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http://dx.doi.org/10.1016/j.marpolbul.2019.110873DOI Listing

Response to Comment on "Thioarsenite Detection and Implications for Arsenic Transport in Groundwater".

Environ Sci Technol 2020 Jun 1. Epub 2020 Jun 1.

U.S. Environmental Protection Agency, Center for Environmental Solutions and Emergency Response, Groundwater Characterization and Remediation Division, 919 Kerr Research Drive, Ada, Oklahoma 74820, United States.

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http://dx.doi.org/10.1021/acs.est.0c02771DOI Listing

[Effects of exogenous arsenic stress on bacterial and archaeal communities in two types of soils].

Ying Yong Sheng Tai Xue Bao 2020 Feb;31(2):615-624

Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences/Key Laboratory of Agricultural Environment, Ministry of Agriculture, Beijing 100081, China.

Mining, smelting and other activities result in arsenic accumulation in soils, with adverse impacts on the quality and safety of agricultural products and soil microorganisms. We monitored the changes of available arsenic content with incubation time after the addition of exogenous arsenic to the yellow soil (YS) and soil derived from purple sandy shale (RS). The community changes of bacteria and archaea in soils without spiked arsenic and soils after 1, 30 and 360 days of exogenous arsenic stress were measured by MiSeq high-throughput sequencing, to investigate the community adaptative mechanism of bacteria and archaea in soil under arsenic stress. Read More

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http://dx.doi.org/10.13287/j.1001-9332.202002.031DOI Listing
February 2020

Effects of Selenium on Arsenic-Induced Liver Lesions in Broilers.

Biol Trace Elem Res 2020 May 31. Epub 2020 May 31.

College of Veterinary Medicine, Sichuan Province Key Laboratory of Animal Disease & Human Health; Key Laboratory of Environmental Hazard and Human Health of Sichuan Province, Sichuan Agricultural University, Ya'an, 625014, China.

The aim of the present study was to investigate the abilities of selenium to counteract the toxic damage of arsenic (As). Two hundred 1-day-old healthy male broilers were randomly divided into five groups and fed the following diets: control group (0.1 mg/kg As + 0. Read More

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http://dx.doi.org/10.1007/s12011-020-02222-8DOI Listing

Enormous enhancement of p-orbital magnetism and band gap in the lightly doped carbyne.

Phys Chem Chem Phys 2020 Jun 1. Epub 2020 Jun 1.

Institute of Physics and Technology, Ural Federal University, Yekaterinburg, Russia.

This paper presents a path to tailor adapted magnetic and electronic properties in carbyne. Although p-orbital magnetism is generally much weaker than d-orbital magnetism, we demonstrate that the charge fluctuation of the free radical electrons triggered by a time-varying electric dipole moment leads to enormous p-orbital magnetism. By introducing 25% arsenic and 12. Read More

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http://dx.doi.org/10.1039/d0cp02274hDOI Listing

MiADMSA ameliorate arsenic induced urinary bladder carcinogenesis in vivo and in vitro.

Biomed Pharmacother 2020 May 28;128:110257. Epub 2020 May 28.

Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research Raebareli, New Transit Campus, Bijnor-Sisendi Road, Sarojini Nagar, Near CRPF Base Camp, Lucknow, U.P., 226002, India. Electronic address:

Background And Purpose: Arsenicosis is a major threat to public health and is a major cause of the development of urinary bladder cancer. Oxidative/ nitrosative stress is one of the key factors for these effects but the involvement of other associated factors is less known. There is a lack of data for the efficacy of chelator against urinary bladder carcinogenesis. Read More

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http://dx.doi.org/10.1016/j.biopha.2020.110257DOI Listing

Is arsenic responsible for the toxicity of the hyperaccumulating mushroom Sarcosphaera coronaria?

Sci Total Environ 2020 May 22;736:139524. Epub 2020 May 22.

Institute of Chemistry, University of Graz, Universitaetsplatz 1, 8010 Graz, Austria. Electronic address:

The Violet Crown Cup, Sarcosphaera coronaria, is a rather inconspicuous mushroom, but with an interesting and unresolved mystery. In earlier days, the mushroom was considered edible, but several poisonings were reported in the early 20 century. The reason for the seemingly sporadic toxicity of S. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.139524DOI Listing

Trace and rare earth elements in monofloral and multifloral honeys from Northwestern Italy; A first attempt of characterization by a multi-elemental profile.

J Trace Elem Med Biol 2020 May 20;61:126556. Epub 2020 May 20.

Chemistry Department, CReAA,Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Turin, Italy.

Background: Metals are a minor constituent in honey, but they have been suggested to be a potential tool to characterize honeys according to their botanical or geographical origin.

Methods: A total of 40 metals were analyzed by Inductively Coupled Plasma-Mass Spectrometry in monofloral and multifloral honeys from Northwestern Italy. PCA and ANOVA were used to discriminate honeys according to the various floral types. Read More

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http://dx.doi.org/10.1016/j.jtemb.2020.126556DOI Listing

Microbial sulfate reduction facilitates seasonal variation of arsenic concentration in groundwater of Jianghan Plain, Central China.

Sci Total Environ 2020 May 11;735:139327. Epub 2020 May 11.

School of Environmental Studies, China University of Geosciences, Wuhan 430074, PR China; State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, PR China.

Bacterial sulfate reduction (BSR) plays a vital but complex role in regulating groundwater arsenic concentration. A quarterly hydro-biogeochemical investigation was conducted to clarify how BSR participated in arsenic dynamics in the geogenic As-contaminated alluvial aquifers of the Jianghan Plain, central Yangtze River Basin. Anthropogenic input of sulfate was identified in the transitional season with higher Cl concentrations and Cl/Br molar ratios compared to the monsoon season. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.139327DOI Listing

Temporal dynamics of heavy metal distribution and associated microbial community in ambient aerosols from vanadium smelter.

Sci Total Environ 2020 May 12;735:139360. Epub 2020 May 12.

School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing 100083, PR China.

Heavy metals (HMs) such as vanadium (V), zinc (Zn), arsenic (As), chromium (Cr), copper (Cu) and nickel (Ni) are released into atmosphere during V smelting activities, resulting in their co-existence with airborne microbes. However, little is known about HMs distributions and associated microbes in aerosols from such industrial districts. This study reveals seasonal dynamics of HMs and microbes in ambient aerosols from V smelter in Panzhihua, China. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.139360DOI Listing

A Highly Selective and Sensitive Chemiluminescent Probe for Real-Time Monitoring of Hydrogen Peroxide in Cells and Animals.

Angew Chem Int Ed Engl 2020 May 29. Epub 2020 May 29.

Tel Aviv University, School of Chemistry, ISRAEL.

Selective and sensitive molecular probes for hydrogen peroxide (H 2 O 2 ), which plays diverse roles in oxidative stress and redox signalling, are urgently needed to investigate the physiological and pathological effects of H 2 O 2 . A lack of reliable tools for in vivo imaging has hampered the development of H 2 O 2 mediated therapeutics. By combining a specific tandem Payne/Dakin reaction with a chemiluminescent scaffold, H 2 O 2 -CL-510 was developed as a highly selective and sensitive probe for detection of H 2 O 2 both in vitro and in vivo . Read More

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http://dx.doi.org/10.1002/anie.202005429DOI Listing

Isolation of a methane oxidising bacterium that bioremediates hexavalent chromium from a formerly industrialised suburban river.

Lett Appl Microbiol 2020 May 29. Epub 2020 May 29.

Biomolecular Sciences Research Centre, College of Heath, Wellbeing and Life Sciences, Sheffield Hallam University, Sheffield, UK.

Sediment samples were taken from sediment adjacent to an urban river in Sheffield in Northern England that had suffered heavy metal pollution due to previous activity of the steel industry (between the 17th and 19th centuries). The most abundant heavy metals found in the samples were lead, chromium, nickel, arsenic and cobalt, with maximum concentrations of 412.80 mg kg 25. Read More

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http://dx.doi.org/10.1111/lam.13330DOI Listing

Perspectives from the Society for Pediatric Research: contaminants of water and children's health: Can we do better?

Pediatr Res 2020 May 29. Epub 2020 May 29.

Division of General Pediatrics, Children's Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.

Children are uniquely susceptible to the health consequences of water contamination. In this review, we summarize the existing, robust literature supporting the importance of examining specific water contaminants (i.e. Read More

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http://dx.doi.org/10.1038/s41390-020-0985-4DOI Listing

One-pot synthesis of nZVI-embedded biochar for remediation of two mining arsenic-contaminated soils: Arsenic immobilization associated with iron transformation.

J Hazard Mater 2020 May 15;398:122901. Epub 2020 May 15.

School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China; Shanghai Engineering Research Center of Solid Waste Treatment and Resource Recovery, Shanghai Jiao Tong University, Shanghai, 200240, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200090, China. Electronic address:

Waste biomass derived biochar has been proven as an effective and friendly amendment for remediation of heavy metals-contaminated soil. However, biochar is less effective for soil arsenic (As) immobilization in most cases. To improve the ability of biochar for As immobilization, in this study, the composite of biochar embedded with nano zero valent iron (nZVI/BC) was prepared through simple one-step pyrolysis of biomass sawdust and FeO mixture and then applied for amendment of two mining As-contaminated soils. Read More

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http://dx.doi.org/10.1016/j.jhazmat.2020.122901DOI Listing

Using rice as a remediating plant to deplete bioavailable arsenic from paddy soils.

Environ Int 2020 May 26;141:105799. Epub 2020 May 26.

Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China.

Rice plant is efficient in arsenic (As) accumulation due to enhanced soil As release under flooded condition and its effective As uptake. Therefore, rice plant can be used to remove bioavailable As from paddy soil. In this study, the depleting dynamics of soil As with rice growth was mapped two-dimensionally with the zirconium-oxide diffusive gradients in thin films (DGT) technique. Read More

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http://dx.doi.org/10.1016/j.envint.2020.105799DOI Listing

Influence of the digestive process on intestinal toxicity of polystyrene microplastics as determined by in vitro Caco-2 models.

Chemosphere 2020 May 24;256:127204. Epub 2020 May 24.

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

The digestive tract is an important target organ for microplastics (MPs). However, little is known about the effects of digestive treatment on the intestinal toxicity of MPs. In this study, an in vitro digestive process was applied to transform 100 nm and 5 μm polystyrene microplastics (PS-MPs). Read More

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http://dx.doi.org/10.1016/j.chemosphere.2020.127204DOI Listing

Determination of arsenicals in mouse tissues after simulated exposure to arsenic from rice for sixteen weeks and the effects on histopathological features.

Ecotoxicol Environ Saf 2020 May 26;200:110742. Epub 2020 May 26.

Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, 523808, China. Electronic address:

The accumulation of arsenic in rice has become a worldwide concern. In this study, dose-dependency in tissues (intestine, liver and kidney) and blood distribution of inorganic arsenicals and their methylated metabolites were investigated in male C57BL/6 mice exposed to four arsenic species (arsenite [iAs], arsenate [iAs], monomethylarsonate [MMA], and dimethylarsinate [DMA]) at four doses (control [C]: 0 μg/g, simulation [S]: 0.91 μg/g, medium [M]: 9. Read More

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http://dx.doi.org/10.1016/j.ecoenv.2020.110742DOI Listing

Arsenic induced alteration in Mrp-1 like activity leads to zebrafish hepatocyte apoptosis: the cellular GSH connection.

Environ Toxicol Pharmacol 2020 May 26:103427. Epub 2020 May 26.

Immunobiology Laboratory, Department of Zoology, University of Delhi, Delhi 110007, India. Electronic address:

Multidrug-resistance protein-1 facilitates the efflux of arsenic conjugated with reduced glutathione nonetheless; the relation between Mrp-1 ATPase activity and cellular GSH levels is contentious. To study this, Mrp-1-ATPase activity was measured in 5 µM arsenic trioxide exposed zebrafish hepatocytes (ZFH) and correlated with intracellular GSH levels. Alongside, mrp-1 gene expression as well as Mrp-1 protein level was also monitored. Read More

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http://dx.doi.org/10.1016/j.etap.2020.103427DOI Listing

Extreme arsenic and antimony uptake and tolerance in toad tadpoles during development in highly contaminated wetlands.

Environ Sci Technol 2020 May 29. Epub 2020 May 29.

The effects of extreme concentrations of toxic metalloids, such as arsenic (As) and antimony (Sb), on larval amphibians are not well understood. We sampled Western Toad tadpoles (Anaxyrus boreas) living in As- and Sb-contaminated wetlands throughout their development. Although the tadpoles completed metamorphosis, they accumulated among the highest concentrations of As and Sb ever reported for a living vertebrate (3866. Read More

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http://dx.doi.org/10.1021/acs.est.0c00558DOI Listing

Impacts of the Samarco tailing dam collapse on metals and arsenic concentration in freshwater fish muscle from Doce River, southeastern Brazil.

Integr Environ Assess Manag 2020 May 29. Epub 2020 May 29.

Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, MG, Brazil.

On November 2015, Samarco tailings dam in Mariana MG, Brazil, collapsed, releasing 62 million tons of tailings that advanced through 668 km of the Doce River and adjacent floodplain. Although being the worst environmental disaster in Brazil, little is known about consequences to aquatic biota. Here we evaluate the effects of the tailings mudflow on metal and arsenic concentration in fish and how concentration correlates with water and fish characteristics. Read More

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http://dx.doi.org/10.1002/ieam.4289DOI Listing

Mercury and arsenic in processed fins from nine of the most traded shark species in the Hong Kong and China dried seafood markets: The potential health risks of shark fin soup.

Mar Pollut Bull 2020 May 29;157:111281. Epub 2020 May 29.

Department of Biological Sciences, Florida International University, 3000 NE 151st Street, North Miami, FL 33181, United States of America.

Shark fin is one of Asia's most valued dried seafood products, with over 80 shark species traded in Hong Kong [HK]. We analyzed processed shark fins from mainland China and HK markets (n = 267) for mercury, methyl‑mercury, and arsenic, to inform consumers, policy makers and public health officials on the health risks of ingesting fins from nine of the most common shark species in the fin trade. Fins from all species frequently exceed Hg limits established by HK authorities. Read More

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http://dx.doi.org/10.1016/j.marpolbul.2020.111281DOI Listing

Hydrogeochemical investigation of arsenic in drinking water of schools and age dependent risk assessment in Vehari District, Punjab Pakistan: a multivariate analysis.

Environ Sci Pollut Res Int 2020 May 28. Epub 2020 May 28.

Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad, 38040, Pakistan.

Globally, a large number of school-aged children is suffering from water-borne diseases, particularly in low-income countries. Arsenic (As) is a hazardous and potentially carcinogenic metal(loid) in drinking water. Nowadays, alarming levels of As have been reported in the groundwater of Vehari District, Punjab Pakistan. Read More

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http://dx.doi.org/10.1007/s11356-020-09334-7DOI Listing

Speciation analysis of arsenic in edible mushrooms by high-performance liquid chromatography hyphenated to inductively coupled plasma mass spectrometry.

Food Chem 2020 May 19;327:127033. Epub 2020 May 19.

West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China; Provincial Key Laboratory for Food Safety Monitoring and Risk Assessment of Sichuan, Chengdu 610041, China. Electronic address:

Some varieties of edible mushrooms can accumulate high contents of arsenic, which is a public health concern. In this study, we developed a high-performance liquid chromatography method linked to inductively coupled plasma triple quadrupole mass spectrometry (HPLC-ICP-MS/MS) for sensitive and accurate determination of arsenite, arsenate, monomethylarsonic acid, dimethylarsinic acid, arsenocholine and arsenobetaine in edible mushrooms. The six arsenic species were extracted ultrasonically from mushrooms using ultrapure water at 60 °C as the solvent, separated on a PRP-X100 anion exchange column (4. Read More

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http://dx.doi.org/10.1016/j.foodchem.2020.127033DOI Listing

Curcumin alleviates arsenic-induced toxicity in PC12 cells via modulating autophagy/apoptosis.

Ecotoxicol Environ Saf 2020 May 25;200:110756. Epub 2020 May 25.

Graduate School of Environmental Science, Hokkaido University, Sapporo, 060-0810, Japan; Faculty of Environmental Earth Science, Hokkaido University, Sapporo, 060-0810, Japan. Electronic address:

Arsenic is a recognized highly toxic contaminant, responsible for numerous human diseases and affecting many millions of people in different parts of the world. Contrarily, curcumin is a natural dietary polyphenolic compound and the main active ingredient in turmeric. Recently it has drawn great attention due to its diverse biological activities, strong antioxidant properties and therapeutic potential against many human ailments. Read More

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http://dx.doi.org/10.1016/j.ecoenv.2020.110756DOI Listing
May 2020
2.762 Impact Factor

Blood Parameters in Treatment with Arsenic Trioxide in Acute Promyelocytic Leukemia: Systematic Review.

Int J Hematol Oncol Stem Cell Res 2020 Apr;14(2):130-139

Cancer Molecular Pathology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.

Acute promyelocytic leukemia (APL) is a subtype of acute myeloid leukemia (AML). APL is famed with some special blood coagulation disorders such as disseminated intravascular coagulation (DIC). The therapeutic methods of APL contain All Trans Retinoic Acid (ATRA), arsenic trioxide (ATO) or/and chemotherapy. Read More

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7231793PMC

Multidisciplinary approach to assess the toxicities of arsenic and barium in drinking water.

Environ Health Prev Med 2020 May 27;25(1):16. Epub 2020 May 27.

Departments of Occupational and Environmental Health, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan.

Well water could be a stable source of drinking water. Recently, the use of well water as drinking water has been encouraged in developing countries. However, many kinds of disorders caused by toxic elements in well drinking water have been reported. Read More

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http://dx.doi.org/10.1186/s12199-020-00855-8DOI Listing

Arsenic fractionation in sediments and speciation in muscles of fish, Chrysichthys nigrodigitatus from a contaminated tropical Lagoon, Nigeria.

Chemosphere 2020 May 20;256:127134. Epub 2020 May 20.

Global Centre for Environmental Remediation (GCER), Faculty of Science, The University of Newcastle, Callaghan Campus, Callaghan, NSW, 2308, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC CARE), ATC Building, Callaghan, NSW, 2308, Australia.

This study assesses arsenic (As) fractionation in sediments and speciation in muscle tissues of Bagrid catfish, Chrysichthys nigrodigitatus from Lagos Lagoon, southwest Nigeria to determine risks to ecological receptors and humans. Residual As was the predominant geochemical fraction (86.2%) in sediments. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2020.127134DOI Listing

Chronic arsenic exposure lowered sperm motility via impairing ultra-microstructure and key proteins expressions of sperm acrosome and flagellum formation during spermiogenesis in male mice.

Sci Total Environ 2020 May 19;734:139233. Epub 2020 May 19.

Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China. Electronic address:

Arsenic (As) poisoning and its potential reproductive functional lesions are a global environmental concern. Recent studies shown that spermiogenesis tends to be a major target process in arsenic-induced male infertility, however, the underlying mechanisms are not fully illuminated. In the present study, 32 fertility related indices including sperm motility, dynamic acrosome formation and sperm flagellum during spermiogenesis in testes were evaluated in adult male mice treated with 0, 0. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.139233DOI Listing
May 2020
4.099 Impact Factor

Effects of selenium on antioxidant enzyme activity and bioaccessibility of arsenic in arsenic-stressed radish.

Ecotoxicol Environ Saf 2020 May 24;200:110768. Epub 2020 May 24.

Jiangxi Provincial Key Laboratory for Restoration of Degraded Ecosystems & Watershed Ecohydrology, Nanchang Institute of Technology, Nanchang, 330099, China.

Consuming arsenic (As)-contaminated vegetables is the main route of As exposure in humans. The present study focused on the alterations in antioxidant enzymatic activities and As bioaccessibility in As-contaminated radish subjected to Se. Compared to the CK group, the total As content in raw radish was reduced by 27. Read More

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http://dx.doi.org/10.1016/j.ecoenv.2020.110768DOI Listing

Toxicological assessment of arsenic-containing phosphatidylcholines in HepG2 cells.

Metallomics 2020 May 27. Epub 2020 May 27.

Department of Food Chemistry, Institute of Nutritional Science, University of Potsdam, Nuthetal, 14558, Germany. and TraceAge-DFG Research Unit on Interactions of Essential Trace Elements in Healthy and Diseased Elderly, Potsdam-Berlin-Jena, Germany.

Arsenolipids include a wide range of organic arsenic species that occur naturally in seafood and thereby contribute to human arsenic exposure. Recently arsenic-containing phosphatidylcholines (AsPCs) were identified in caviar, fish, and algae. In this first toxicological assessment of AsPCs, we investigated the stability of both the oxo- and thioxo-form of an AsPC under experimental conditions, and analyzed cell viability, indicators of genotoxicity and biotransformation in human liver cancer cells (HepG2). Read More

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http://dx.doi.org/10.1039/d0mt00073fDOI Listing

Soil heavy metal contamination assessment in the Hun-Taizi River watershed, China.

Sci Rep 2020 May 26;10(1):8730. Epub 2020 May 26.

CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110164, China.

The Hun-Taizi River watershed includes the main part of the Liaoning central urban agglomeration, which contains six cities with an 80-year industrial history. A total of 272 samples were collected from different land use areas within the study area to estimate the concentration levels, spatial distributions and potential sources of arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), mercury (Hg), nickel (Ni), lead (Pb) and zinc (Zn) with a geographic information system (GIS), principal component analysis (PCA) and canonical correspondence analysis (CCA). Only the concentration of Cd was over the national standard value (GB 15618-2018). Read More

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http://dx.doi.org/10.1038/s41598-020-65809-0DOI Listing

Phytoremediation Potential, Photosynthetic and Antioxidant Response to Arsenic-Induced Stress of L. Sown on Fly Ash Deposits.

Plants (Basel) 2020 May 22;9(5). Epub 2020 May 22.

Department of Ecology, Institute for Biological Research "Siniša Stanković", National Institute of Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11060 Belgrade, Serbia.

Arsenic (As) from coal fly ash can be released into soil/groundwater, presenting a global threat to the environment and human health. To overcome this environmental problem, phytoremediation represents an urgent need, providing 'green' cleanup of contaminated lands. The present study focused on As concentrations in fly ash and plants, evaluation of phytoremediation potential of sown on fly ash deposits together with its photosynthetic activity, and oxidative and antioxidative response to As stress. Read More

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http://dx.doi.org/10.3390/plants9050657DOI Listing

PLZF-RAR, NPM1-RAR, and Other Acute Promyelocytic Leukemia Variants: The PETHEMA Registry Experience and Systematic Literature Review.

Cancers (Basel) 2020 May 21;12(5). Epub 2020 May 21.

Hospital Universitari I Politècnic La Fe, Department of Hematology, 46-009 Valencia, Spain.

It has been suggested that 1-2% of acute promyelocytic leukemia (APL) patients present variant rearrangements of retinoic acid receptor alpha (RARα) fusion gene, with the promyelocytic leukaemia zinc finger (PLZF)/RAR being the most frequent. Resistance to all-trans-retinoic acid (ATRA) and arsenic trioxide (ATO) has been suggested in PLZF/RAR and other variant APLs. Herein, we analyze the incidence, characteristics, and outcomes of variant APLs reported to the multinational PETHEMA (Programa para el Tratamiento de Hemopatias Malignas) registry, and we perform a systematic review in order to shed light on strategies to improve management of these extremely rare diseases. Read More

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http://dx.doi.org/10.3390/cancers12051313DOI Listing

Selenite Foliar Application Alleviates Arsenic Uptake, Accumulation, Migration and Increases Photosynthesis of Different Upland Rice Varieties.

Int J Environ Res Public Health 2020 May 21;17(10). Epub 2020 May 21.

Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China.

This study investigates how arsenic (As) uptake, accumulation, and migration responds to selenium (Se) foliar application (0-5.0 mg × kg). Rice varieties known to accumulate low (DOURADOAGULHA) and high (SINALOAA68) concentrations of arsenic were chosen to grow on soil with different As concentrations (20. Read More

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http://dx.doi.org/10.3390/ijerph17103621DOI Listing