30,294 results match your criteria Arsenic


Well-dispersed TiO nanoparticles anchored on FeO magnetic nanosheets for efficient arsenic removal.

J Environ Manage 2019 Feb 18;237:63-74. Epub 2019 Feb 18.

Department of Chemical & Biochemical Engineering, The College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P. R. China. Electronic address:

Magnetic iron-titanium binary oxide as an effective adsorbent for arsenic contaminant is a challenge primarily because of their bulk structure and agglomeration effect. Herein, a novel and uniform sandwich-like magnetic FeO@TiO sheets were synthesized by utilizing a facile strategy involving amorphous-to-crystalline transformation and reduction in H, to achieve dispersed anatase TiO nanoparticles with a small size of ∼8 nm anchored on FeO sheets. The resultant FeO@TiO sheets nanocomposite possessing a high specific surface area of ∼89. Read More

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http://dx.doi.org/10.1016/j.jenvman.2019.02.037DOI Listing
February 2019

Arsenic volatilization by Aspergillus sp. and Penicillium sp. isolated from rice rhizosphere as a promising eco-safe tool for arsenic mitigation.

J Environ Manage 2019 Feb 19;237:170-179. Epub 2019 Feb 19.

Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados 5001, 09210-580, Santo André, SP, Brazil. Electronic address:

Arsenic (As) is a non-threshold human carcinogenic. This element can be volatilized either by nature or anthropogenic sources. In the present study, the analytical performance of an As volatile species trapping system was evaluated to assess the As volatilization promoted by Penicillium sp. Read More

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http://dx.doi.org/10.1016/j.jenvman.2019.02.060DOI Listing
February 2019

Human health risk assessment of groundwater arsenic contamination in Jinghui irrigation district, China.

J Environ Manage 2019 Feb 19;237:163-169. Epub 2019 Feb 19.

School of Land Engineering, Chang'an University, No. 126 Yanta Road, Xi'an, 710054, Shaanxi, China. Electronic address:

The groundwater is an important route of human exposure to kinds of contaminants. This study was carried out to investigate the occurrence and spatial distribution of groundwater arsenic in the Jinghui irrigation district in Shaanxi Province, China. The water contamination was assessed for drinking purposes by comparing it to national guidelines, and the impacts of arsenic on human health were quantified using the health risk assessment model recommended by the USEPA. Read More

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http://dx.doi.org/10.1016/j.jenvman.2019.02.067DOI Listing
February 2019

Health risk assessment of potentially toxic elements in soils along the Central Elbe River, Germany.

Environ Int 2019 Feb 18;126:76-88. Epub 2019 Feb 18.

Wilhelm-Raabe-Straße 9, 06118, Halle (Saale), Germany.

Floodplain soils across Central Elbe River (CER), Germany, vary considerably in potentially toxic element (PTE) content. However, there has never been a comprehensive study that links PTE levels with human health risk for children and adults. Our objective was to determine the contamination of 13 PTEs in 94 soil profiles along CER and assess the associated health risk via diverse indices for adults and children. Read More

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http://dx.doi.org/10.1016/j.envint.2019.02.011DOI Listing
February 2019
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Reducing arsenic in rice grains by leonardite and arsenic-resistant endophytic bacteria.

Chemosphere 2019 Feb 11;223:448-454. Epub 2019 Feb 11.

Division of Biotechnology, School of Bioresources and Technology, King Mongkut's University of Technology Thonburi, Bangkok, 10150, Thailand.

Arsenic contaminated in rice plants can cause many physiological, biochemical and productivity in rice. This also had a negative impact on human health. To decrease arsenic in grains, a combination of leonardite as amendment and arsenic-resistance endophytic bacteria was investigated. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.02.054DOI Listing
February 2019

Combination of soil organic and inorganic amendments helps plants overcome trace element induced oxidative stress and allows phytostabilisation.

Chemosphere 2019 Feb 13;223:223-231. Epub 2019 Feb 13.

Department of Soil and Water Conservation and Organic Waste Management, CEBAS-CSIC, Spain.

Trace element (TE)-contaminated soils require the improvement of their physico-chemical properties in order to allow their restoration through phytostabilization technologies. This study aimed to determine the usefulness of oxidative stress related parameters to validate the suitability of two different combinations of organic (solid fraction of pig slurry) and inorganic (paper mill sludge or a commercial red mud derivative) amendments for the phytostabilization of an acidic (4.2) TE-contaminated mine soil from SE Spain. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.02.056DOI Listing
February 2019

Editorial: Effects of metal contamination on ammonia-oxidizing microorganisms in a freshwater reservoir.

J Environ Sci (China) 2019 May;79:364-366

Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine & Dentistry, University of Alberta, Edmonton T6G 2G3, Canada. Electronic address:

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http://dx.doi.org/10.1016/j.jes.2019.02.005DOI Listing
May 2019
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Editorial: Effect of root anatomy and apoplastic barrier development on cadmium uptake in rice.

J Environ Sci (China) 2019 May;79:361-363

Department of Chemistry, University of Alberta, Edmonton T6G 2G3, Canada; Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton T6G 2G3, Canada. Electronic address:

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https://linkinghub.elsevier.com/retrieve/pii/S10010742193041
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http://dx.doi.org/10.1016/j.jes.2019.02.004DOI Listing
May 2019
3 Reads

Factors Affecting Transfer of the Heavy Metals Arsenic, Lead, and Cadmium from Diatomaceous-Earth Filter Aids to Alcoholic Beverages during Laboratory-Scale Filtration.

J Agric Food Chem 2019 Feb 20. Epub 2019 Feb 20.

Center for Food Safety and Applied Nutrition, Office of Food Safety, Division of Food Processing Science and Technology , U.S. Food and Drug Administration , 6502 South Archer Road , Bedford Park , Illinois 60501 , United States.

Filtration methods for alcoholic fermented beverages often use filter aids such as diatomaceous earth (DE), which may contain elevated amounts of the heavy metals arsenic (As), lead (Pb), and cadmium (Cd). Here, we evaluated factors affecting transfer of these heavy metals from DE to beer and wine. A laboratory-scale filtration system was used to process unfiltered ale, lager, red wine, and white wine with three types of food-grade DE. Read More

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http://dx.doi.org/10.1021/acs.jafc.8b06062DOI Listing
February 2019

Arsenic-induced inflammation in workers.

Mol Biol Rep 2019 Feb 19. Epub 2019 Feb 19.

Department of Medical Biochemistry, Faculty of Medicine, Ankara Yildirim Beyazit University, Ankara, Turkey.

Occupational and environmental exposures to metal and metalloids can result in neurotoxicity and immunotoxicity. Selenium (Se) is essential for the proper functioning of neutrophils, macrophages, natural killer (NK) cells, T-lymphocytes and other immune mechanisms, while zinc (Zn) is a trace element essential for basic cell activities, including cell growth and differentiation. Arsenic (As) may lead to different types of immunosuppressive effects. Read More

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http://dx.doi.org/10.1007/s11033-019-04694-xDOI Listing
February 2019
2 Reads

Intake of Heated Leaf Extract of Coriandrum sativum Contributes to Resistance to Oxidative Stress via Decreases in Heavy Metal Concentrations in the Kidney.

Plant Foods Hum Nutr 2019 Feb 19. Epub 2019 Feb 19.

Department of Neurophysiology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka, 422-8526, Japan.

Coriandrum sativum (coriander) is an annual herb of the Apiaceae family and has been used as a traditional remedy. Here we examined whether heated leaf extract of coriander decreases the concentrations of heavy metals in tissues. Male ddY mice were given a drinking water containing 0. Read More

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http://dx.doi.org/10.1007/s11130-019-00720-2DOI Listing
February 2019
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Refined assessment of heavy metal-associated health risk due to the consumption of traditional animal medicines in humans.

Environ Monit Assess 2019 Feb 19;191(3):171. Epub 2019 Feb 19.

Xi'an Jiaotong University, No. 28 Xianning Xi Road, Xi'an, 710049, Shanxi, China.

Little is known about the extent of heavy metal accumulation in traditional Chinese medicines (TCMs). In this study, the levels of lead (Pb), cadmium (Cd), arsenic (As), and mercury (Hg) in traditional animal medicines were monitored using inductively coupled plasma mass spectroscopy (ICP-MS). Additionally, for the first time, a heavy metal risk assessment strategy was used to evaluate the potential risks of traditional animal medicines by calculating estimated daily intake (EDI), target hazard quotient (THQ), and cancer risk (CR). Read More

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http://dx.doi.org/10.1007/s10661-019-7270-1DOI Listing
February 2019

Effects of backwashing strategy and dissolved oxygen on arsenic removal to meet drinking water standards in a sulfidogenic attached growth reactor.

J Hazard Mater 2019 Feb 8;369:309-317. Epub 2019 Feb 8.

Department of Civil Engineering, IIT Guwahati, Guwahati, India. Electronic address:

Efficiency and feasibility of two backwashing methods (water-nitrogen and water-air assisted) on arsenic and its co-pollutants removal were assessed through running a sulfidogenic attached growth reactor (AGR) treating arsenic spiked simulated groundwater for about 600 days. Replacing water with nitrogen assisted backwashing (WNAB) by water with air assisted backwashing (WAAB) introduced dissolved oxygen (DO) as an additional electron acceptor, which required an increased empty bed contact time (EBCT) to retain the entire terminal electron accepting zones (DO, nitrate, arsenate and sulfate) within the reactor. Removal of arsenic to below 10 μg/L required a longer EBCT at higher influent DO in backwash water. Read More

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http://dx.doi.org/10.1016/j.jhazmat.2019.02.018DOI Listing
February 2019

Environmental Risk Factors Associated with Child Stunting: A Systematic Review of the Literature.

Ann Glob Health 2018 Nov 5;84(4):551-562. Epub 2018 Nov 5.

Child Health Research Centre, The University of Queensland, Center for Children's Health Research South Brisbane, AU.

Background: Stunting, a form of malnutrition characterized by impaired linear growth in the first two years of life, affects one quarter of children globally. While nutritional status remains the key cause of stunting, there is evidence that environmental risk factors are associated with stunting.

Objective: The objective of this review is to explore the current literature and compile the environmental risk factors that have been associated with stunting. Read More

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http://dx.doi.org/10.9204/aogh.2361DOI Listing
November 2018

The geochemistry of geophagic material consumed in Onangama Village, Northern Namibia: a potential health hazard for pregnant women in the area.

Environ Geochem Health 2019 Feb 18. Epub 2019 Feb 18.

Department of Geology, University of Johannesburg, Johannesburg, South Africa.

Ingestion of geophagic materials might affect human health and induce diseases by different ways. The purpose of this study is to determine the geochemical composition of geophagic material consumed especially by pregnant women in Onangama Village, Northern Namibia and to assess its possible health effects. X-ray fluorescence and inductively coupled plasma mass spectrometry were used in order to determine the major, and trace elements as well as anions concentrations of the consumed material. Read More

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http://dx.doi.org/10.1007/s10653-019-00253-2DOI Listing
February 2019

Immobilisation of high-arsenic-containing tailings by using metallurgical slag-cementing materials.

Chemosphere 2019 Feb 8;223:117-123. Epub 2019 Feb 8.

School of Civil and Resource Engineering, University of Science and Technology Beijing, 100083, China; Key Laboratory of High-efficient Mining and Safety of Metal Mines, Ministry of Education, Beijing 100083, China; Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing, 100083, China. Electronic address:

The mixture of finely ground blast furnace slag (BFS), basic oxygen furnace (BOF) steel slag (SS), and flue gas desulfurisation (FGD) gypsum could be used as cement to solidify heavy metals. In this study, these cementitious materials were combined with high-arsenic-containing tailings to form cemented backfill material (CBM). The results indicated that the optimal design of CBM was that of specimen CBM2 which showed good early strength (10. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.02.030DOI Listing
February 2019

Changes in blood pressure associated with lead, manganese, and selenium in a Bangladeshi cohort.

Environ Pollut 2019 Feb 7;248:28-35. Epub 2019 Feb 7.

Division of Epidemiology and Biostatistics, University of Illinois at Chicago, School of Public Health, Chicago, IL, USA. Electronic address:

Background: Heavy metal contamination is widespread in Bangladesh. Previous studies have observed lead increases blood pressure over time. However, the role of other metal contaminants and essential micronutrients, which could also adversely affect blood pressure or act as protective factors, is understudied. Read More

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http://dx.doi.org/10.1016/j.envpol.2019.01.129DOI Listing
February 2019
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EVI1 promotes epithelial-to-mesenchymal transition, cancer stem cell features and chemo-/radioresistance in nasopharyngeal carcinoma.

J Exp Clin Cancer Res 2019 Feb 15;38(1):82. Epub 2019 Feb 15.

Department of Radiotherapy, People's Hospital of Shanxi Province, Taiyuan, China.

Background: Aberrant EVI1 expression is frequently reported in cancer studies; however, its role in nasopharyngeal carcinoma (NPC) has not been examined in detail. The aim of the present study is to investigate the involvement of EVI1 in progression and prognosis of NPC.

Methods: RT-PCR, immunohistochemistry and western blot assays were used to examine the expression of EVI1 in NPC tissues and cell lines. Read More

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http://dx.doi.org/10.1186/s13046-019-1077-3DOI Listing
February 2019

Strategies to inhibit arsenic trioxide-induced cardiotoxicity in acute promyelocytic leukemia.

J Cell Physiol 2019 Feb 15. Epub 2019 Feb 15.

Thalassemia and Hemoglobinopathy Research Center, Research Institute of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.

Objective: Arsenic trioxide (ATO) is a drug commonly used for the treatment of acute promyelocytic leukemia (APL). Although ATO has been shown to cause significant improvement in patients, it is associated with serious side effects, which sometimes lead to the patient's death. In this review paper, we examine the reports of ATO-induced cardiotoxicity in APL patients and evaluate the strategies to reduce the incidence of such toxicity. Read More

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http://dx.doi.org/10.1002/jcp.28292DOI Listing
February 2019
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Study on Speciation of As, Cr, and Sb in Bottled Flavored Drinking Water Samples Using Advanced Analytical Techniques IEC/SEC-HPLC/ICP-DRC-MS and ESI-MS/MS.

Molecules 2019 Feb 14;24(4). Epub 2019 Feb 14.

Department of Trace Element Analysis by Spectroscopy Method, Faculty of Chemistry, Adam Mickiewicz University in Poznan, 89b Umultowska Street, 61-614 Poznan, Poland.

The main aim of the research was to develop a complementary analytical approach consisting of bespoke speciation analysis and non-targeted speciation analysis of As, Sb, and Cr in flavored bottled drinking water samples using HPLC/ICP-DRC-MS and ESI-MS/MS. The scope of two previously developed analytical procedures, (1) multielemental speciation procedure for As, As, Cr, Sb, and Sb analysis and (2) arsenic speciation procedure for AsB, As, DMA, MMA, and As quantification, was extended to the analysis of a new sample type in terms of bespoke speciation analysis. As for the non-targeted speciation, analysis size exclusion chromatography was used with ICP-MS and a complementary technique, ESI-MS/MS, was used for the organic species of As, Sb, and Cr screening. Read More

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http://dx.doi.org/10.3390/molecules24040668DOI Listing
February 2019
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Circulating miRNA-126, -145 and -155 levels in Mexican women exposed to inorganic arsenic via drinking water.

Environ Toxicol Pharmacol 2019 Feb 7;67:79-86. Epub 2019 Feb 7.

Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico; Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico; Unidad Académica Multidisciplinaria Zona Media, Universidad Autónoma de San Luis Potosí, Rio-verde, San Luis Potosí, Mexico. Electronic address:

The aim of this research was to investigate circulating expression levels of three miRNAs (miR-126, miR-155, and miR-145) proposed as predictive CVD biomarkers in Mexican women exposed to inorganic arsenic via drinking water. Mean UAs concentration of 19.5 ± 14. Read More

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http://dx.doi.org/10.1016/j.etap.2019.02.004DOI Listing
February 2019

Mangiferin alleviates arsenic induced oxidative lung injury via upregulation of the Nrf2-HO1 axis.

Food Chem Toxicol 2019 Feb 12;126:41-55. Epub 2019 Feb 12.

Division of Molecular Medicine, Bose Institute, P-1/12, CIT Scheme VII M, Kolkata, 700054, India. Electronic address:

Arsenic contaminated drinking water consumption is a serious health issue around the world. Chronic inorganic arsenic exposure has been associated with respiratory dysfunctions. It exerts various detrimental effects, disrupting normal cellular homeostasis and turning on severe pulmonary complications. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S02786915193007
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http://dx.doi.org/10.1016/j.fct.2019.02.022DOI Listing
February 2019
2 Reads

Toward Candidate Proteomic Biomarkers in Clinical Monitoring of Acute Promyelocytic Leukemia Treatment with Arsenic Trioxide.

OMICS 2019 Feb;23(2):119-130

2 School of Medical and Health Sciences, Edith Cowan University, Perth, Australia.

The introduction of arsenic trioxide (ATO) in treatment of acute promyelocytic leukemia (APL) has resulted in high clinical complete remission (CR) rates over 90%. On the contrary, the risk for early death (ED) in APL patients treated with ATO continues to have a negative impact for optimization of APL therapeutics. There is an urgent need for precision medicine and biomarkers in clinical monitoring of ATO toxicity in APL, and ED in particular. Read More

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http://dx.doi.org/10.1089/omi.2018.0178DOI Listing
February 2019
1 Read

Elevated level of arsenic negatively influences nifH gene expression of isolated soil bacteria in culture condition as well as soil system.

Environ Geochem Health 2019 Feb 14. Epub 2019 Feb 14.

Department of Microbiology, University of Kalyani, Kalyani, West Bengal, 741235, India.

Comprehensive studies on the effect of arsenic (As) on free-living diazotrophs that play a crucial role in soil fertility by nitrogen fixation are still scanty. Here, we isolated three free-living bacteria from rice field with potential nitrogen-fixing ability and investigated the impact of As on their nifH gene expression and extracellular polysaccharide (EPS) production in culture condition and soil system. 16S rRNA sequence analysis showed that the isolated bacteria were affiliated to β-Proteobacteria, γ-Proteobacteria and Firmicutes. Read More

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http://dx.doi.org/10.1007/s10653-019-00261-2DOI Listing
February 2019
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Functional Nanostructured Material for Wastewater Decontamination.

J Nanosci Nanotechnol 2019 Jul;19(7):4338-4343

Department of Chemistry - Centro Federal de Educação Tecnológica de Minas Gerais (CEFET-MG) - Av. Amazonas, 5253, Nova Suíça - 30421-169 - Belo, Horizonte, Minas Gerais, Brazil.

In this study, an iron oxyhydroxide nanocomposite with magnetic properties has been successfully synthesized. The quantification of the phases determined by Rietveld refinement has shown the presence of 74% of -FeOOH (akaganeite) and 26% of Fe₃O₄ (magnetite). TEM images show aggregates of around 5-15 nm Fe₃O₄ nanoparticles with cubic morphology and -FeOOH somatoids and nanorods with length and width of 100-200 nm and 10-50 nm, respectively. Read More

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http://dx.doi.org/10.1166/jnn.2019.16285DOI Listing

Homoharringtonine potentiates the antileukemic activity of arsenic trioxide against acute myeloid leukemia cells.

Exp Cell Res 2019 Feb 11. Epub 2019 Feb 11.

Central Laboratory, The Union Hospital of Fujian Medical University, Fuzhou, China. Electronic address:

Relapse of minimal residual disease (MRD) is a major problem after conventional chemotherapy in patients with acute myeloid leukemia (AML). The bone marrow stroma can protect AML cells from insults of chemotherapy, partly contributing to AML relapse. Arsenic trioxide (ATO) is the main component of arsenical traditional Chinese medicines and has been widely used for the treatment of hematologic malignancies particularly acute promyelocytic leukemia over the past three decades. Read More

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http://dx.doi.org/10.1016/j.yexcr.2019.02.008DOI Listing
February 2019
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The effects of dietary selenomethionine on tissue-specific accumulation and toxicity of dietary arsenite in rainbow trout (Oncorhynchus mykiss) during chronic exposure.

Metallomics 2019 Feb 14. Epub 2019 Feb 14.

Department of Biology, University of Saskatchewan, Saskatoon, SK, Canada. and Toxicology Centre, University of Saskatchewan, Saskatoon, SK, Canada.

The interactive effects of different doses of dietary selenium [as selenomethionine; 1.8 μg g-1 (control), 10 μg g-1 and 40 μg g-1 diet] on the toxicity of dietary arsenic [as arsenite (As3+); 80 μg As per g diet] were investigated in rainbow trout over an exposure period of 30 days. Fish fed with As3+ alone showed an increased hepatic lipid peroxidation (LPO) and a concomitant decline in cellular redox potential (determined as GSH:GSSG) in the liver tissue relative to the control fish. Read More

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http://dx.doi.org/10.1039/c8mt00309bDOI Listing
February 2019
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Estimation of arsenic bioaccessibility in raw and cooked radish using simulated in vitro digestion.

Food Funct 2019 Feb 14. Epub 2019 Feb 14.

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

Consumption of arsenic (As)-contaminated vegetables is a major As exposure pathway for humans. However, little is known about plant As uptake characteristics and the bioaccessibility of As after ingestion of As-contaminated radish. The present study investigated As concentrations and species in As-contaminated radish and assessed the effects of steamed, griddled and boiled cooking on the bioaccessibility of As in radish using in vitro digestion. Read More

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http://dx.doi.org/10.1039/c8fo02003eDOI Listing
February 2019

Changes in rhizosphere bacterial communities during remediation of heavy metal-accumulating plants around the Xikuangshan mine in southern China.

Sci Rep 2019 Feb 13;9(1):1947. Epub 2019 Feb 13.

College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, 100083, China.

Mining and smelting activities are the major sources of antimony (Sb) contamination. The soil around Xikuangshan (XKS), one of the largest Sb mines in the world, has been contaminated with high concentrations of Sb and other associated metals, and has attracted extensive scholarly attention. Phytoremediation is considered a promising method for removing heavy metals, and the diversity and structure of rhizosphere microorganisms may change during the phytoremediation process. Read More

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http://dx.doi.org/10.1038/s41598-018-38360-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6374380PMC
February 2019

Airborne metals and polycyclic aromatic hydrocarbons in relation to mammographic breast density.

Breast Cancer Res 2019 Feb 13;21(1):24. Epub 2019 Feb 13.

Departments of Surgery and Radiology, University of Vermont, Burlington, VT, USA.

Background: Breast density is strongly related to breast cancer. Identifying associations between environmental exposures and density may elucidate relationships with breast cancer. Metals and polycyclic aromatic hydrocarbons (PAHs) may influence breast density via oxidative stress or endocrine disruption. Read More

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http://dx.doi.org/10.1186/s13058-019-1110-7DOI Listing
February 2019
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Heavy metal pollution and potential health risks of commercially available Chinese herbal medicines.

Sci Total Environ 2019 Feb 30;653:748-757. Epub 2018 Oct 30.

Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.

A survey was conducted to investigate the pollution and health risks of copper (Cu), cadmium (Cd), lead (Pb), arsenic (As), mercury (Hg) and zinc (Zn) in 60 Chinese herbal medicines (CHMs) collected from a market in Kunming City, Yunnan Province, China. Furthermore, eight CHMs (Cyathulae radix, Drynariae rhizoma, Peucedani radix, Homalomenae rhizoma, Dryopteris setosa, Polygonati rhizoma, Lilii bulbus, and Linderae radix) containing high Cd concentrations were selected to further analyse their Cd chemical forms. Additionally, the dissolution rates of six heavy metals in decoction liquid were also analysed for four CHMs (Typhonii rhizoma, Linderae radix, Homalomenae rhizoma, and Cyathulae radix), and the health risks of heavy metals in CHMs were evaluated. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2018.10.388DOI Listing
February 2019
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Effects of acidification on the optical properties of dissolved organic matter from high and low arsenic groundwater and surface water.

Sci Total Environ 2019 Feb 5;653:1326-1332. Epub 2018 Nov 5.

Department of Geology, Kansas State University, Manhattan, KS, USA.

The optical properties of bulk dissolved organic matter (DOM) at ambient pH and upon acidification (pH ~2) by hydrochloric acid (HCl) or nitric acid (HNO) were examined in groundwater and surface water samples from the Bengal Basin. Samples of shallow high arsenic (As) and deep low As groundwaters and surface waters from the same geographic area were collected and preserved with HCl and HNO. The optical properties of groundwater samples responded to acidification differently than those of the surface water samples. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2018.11.040DOI Listing
February 2019

Trace metals in Northern New England streams: Evaluating the role of road salt across broad spatial scales with synoptic snapshots.

PLoS One 2019 13;14(2):e0212011. Epub 2019 Feb 13.

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

Mobilization of trace metals from soils to surface waters can impact both human and ecosystem health. This study resamples a water sample archive to explore the spatial pattern of streamwater total concentrations of arsenic, cadmium, copper, lead, and zinc and their associations with biogeochemical controls in northern New England. Road deicing appears to result in elevated trace metal concentrations, as trace metal concentrations are strongly related to sodium concentrations and are most elevated when the sodium: chloride ratio is near 1. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0212011PLOS
February 2019
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Oxidative addition of arsenic halides to platinum(0).

Dalton Trans 2019 Feb 13. Epub 2019 Feb 13.

Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany. and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.

Reaction of AsCl3 with Pt(0) complexes [Pt(PCy3)2], [Pt(PCy3)(IMes)] and [Pt(IMes)2] (IMes = 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene) resulted in oxidative addition of As-Cl bonds at the Pt centres to form complexes of the form trans-[PtCl(AsCl2)L2]. Two of these compounds were characterised by X-ray diffraction, making them the first structurally characterised examples of AsX2 ligands (X = halogen). AsBr3 also underwent oxidative addition to [Pt(PCy3)2], forming trans-[PtBr(AsBr2)(PCy3)2] in situ, as judged by 31P NMR spectroscopy. Read More

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http://dx.doi.org/10.1039/c8dt04995eDOI Listing
February 2019

Non-invasive structure-function assessment of the liver by 2D time-harmonic elastography and the dynamic Liver MAximum capacity (LiMAx) test.

J Gastroenterol Hepatol 2019 Feb 13. Epub 2019 Feb 13.

Department of Radiology, Charité - Universitätsmedizin Berlin, Berlin, Germany.

Background And Aim: Accurate assessment of structural and functional characteristics of the liver could improve the diagnosis and the clinical management of patients with chronic liver diseases. However, the structure-function relationship in the progression of chronic liver disease remains elusive. The aim of this study is the combined measurement of liver function by the C-methacetin Liver MAximum capacity (LiMAx) test and tissue-structure related stiffness by 2D time-harmonic elastography (THE) for the assessment of liver disease progression. Read More

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http://dx.doi.org/10.1111/jgh.14629DOI Listing
February 2019
2 Reads

Ionomic profile and arsenic speciation in Semisulcospira cancellata, a freshwater shellfish from a mine-impacted river in China.

Environ Sci Pollut Res Int 2019 Feb 12. Epub 2019 Feb 12.

Hunan Engineering Technology Research Center of Featured Aquatic Resources Utilization, College of Animal Science and Technology, Hunan Agricultural University, Changsha, 410128, China.

Freshwater aquatic environment close to cities and industrial areas is more sensitive than marine environment. The freshwater shellfish Semisulcospira cancellate was introduced as a bioindicator to monitor the heavy metal contamination in the river through ionomic profiles and arsenic speciation. The shellfish samples were collected near four cities along the Xiang River in China. Read More

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http://dx.doi.org/10.1007/s11356-019-04489-4DOI Listing
February 2019

A candidate for lung cancer treatment: arsenic trioxide.

Authors:
W Huang Y C Zeng

Clin Transl Oncol 2019 Feb 12. Epub 2019 Feb 12.

Department of Medical Oncology, Shengjing Hospital of China Medical University, 39 Huaxiang Road, Shenyang, 110022, China.

Arsenic trioxide (ATO), a highly effective drug in treating acute promyelocytic leukemia with low toxicity, demonstrates a significant effect on lung cancer. The anti-cancer mechanisms of ATO include inhibition of cancer stem-like cells, induction of apoptosis, anti-angiogenesis, sensitization of chemotherapy and radiotherapy, anti-cancer effects of hypoxia, and immunoregulation properties. In addition, some studies have reported that different lung cancers respond differently to ATO. Read More

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http://dx.doi.org/10.1007/s12094-019-02054-6DOI Listing
February 2019
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Effect of chronic exposure to inorganic arsenic on intestinal cells.

J Appl Toxicol 2019 Feb 12. Epub 2019 Feb 12.

Instituto de Agroquímica y Tecnología de Alimentos (IATA-CSIC), Calle Agustín Escardino 7, 46980, Paterna, Valencia, Spain.

Chronic exposure to inorganic arsenic (As)-As(III) + As(V)-is associated with type 2 diabetes, vascular diseases and various types of cancer. Although the oral route is the main way of exposure to inorganic As, the adverse gastrointestinal effects produced by chronic exposure are not well documented. The aim of the present study is to evaluate the effect of chronic exposure to As(III) on the intestinal epithelium. Read More

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http://dx.doi.org/10.1002/jat.3778DOI Listing
February 2019

Inorganic Arsenic as an Endocrine Disruptor: Modulation of the Glucocorticoid Receptor Pathway in Placental Cells via CpG methylation.

Chem Res Toxicol 2019 Feb 12. Epub 2019 Feb 12.

Prenatal exposure to inorganic arsenic (iAs) has been associated with adverse developmental and reproductive outcomes. These outcomes may be tied to altered functionality of nuclear transcription factors such as the glucocorticoid receptor (GR) in the placenta and associated gene expression. The GR pathway is integral for proper fetal and placental development, and perturbations in this pathway may underlie observed associations between prenatal iAs exposure and adverse birth outcomes. Read More

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http://dx.doi.org/10.1021/acs.chemrestox.8b00352DOI Listing
February 2019

Synergistic anti-tumor effects of arsenic trioxide and blue LED irradiation on human osteosarcoma.

Int J Biol Sci 2019 1;15(2):386-394. Epub 2019 Jan 1.

Department of Orthopedics, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China.

Arsenic trioxide (ATO) has been well recognized as an anti-tumor agent for various human cancers. Recently, the blue light emitting diodes (LEDs)-based therapy has also been demonstrated to be potential therapeutic strategies for several cancers. However, the combination effects of ATO and blue LED on tumor suppression are still unclear. Read More

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http://dx.doi.org/10.7150/ijbs.28356DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6367547PMC
January 2019
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Genome-wide epigenetic signatures of childhood adversity in early life: Opportunities and challenges.

J Dev Orig Health Dis 2019 Feb 12:1-8. Epub 2019 Feb 12.

1Department of Physiology,University of Toronto,Toronto,ON,Canada.

Maternal adversity and fetal glucocorticoid exposure has long-term effects on cardiovascular, metabolic and behavioral systems in offspring that can persist throughout the lifespan. These data, along with other environmental exposure data, implicate epigenetic modifications as potential mechanisms for long-term effects of maternal exposures on adverse health outcomes in offspring. Advances in microarray, sequencing and bioinformatic approaches have enabled recent studies to examine the genome-wide epigenetic response to maternal adversity. Read More

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http://dx.doi.org/10.1017/S2040174418000843DOI Listing
February 2019

[Application of spatial statistics in studying the distribution of food contamination].

Zhonghua Liu Xing Bing Xue Za Zhi 2019 Feb;40(2):241-246

Risk Communication Department, China National Center for Food Safety Risk Assessment, Beijing 100022, China; Post-doctoral Station, Guizhou Academy of Sciences, Guiyang 550001, China.

Based on data related to arsenic contents in paddy rice, as part of the food safety monitoring programs in 2017, to discuss and explore the application of spatial analysis used for food safety risk assessment. One province was chosen to study the spatial visualization, spatial point model estimation, and kernel density estimation. Moran's statistic of spatial autocorrelation methods was used to analyze the spatial distribution at the county level. Read More

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http://dx.doi.org/10.3760/cma.j.issn.0254-6450.2019.02.022DOI Listing
February 2019

Total Arsenic and Arsenic Species Determination in Freshwater Fish by ICP-DRC-MS and HPLC/ICP-DRC-MS Techniques.

Molecules 2019 Feb 9;24(3). Epub 2019 Feb 9.

Department of Trace Element Analysis by Spectroscopy Methods, Faculty of Chemistry, Adam Mickiewicz University in Poznań, 89b Umultowska Street, 61-614 Poznań, Poland.

Analytical methods for the determination of total arsenic (TAs) and arsenic species (arsenite-As(III), arsenate-As(V), monomethylarsenic acid-MMA, dimethylarsenic acid-DMA and arsenobetaine-AsB) in freshwater fish samples were developed. Inductively coupled plasma mass spectrometry with dynamic reaction cell (ICP-DRC-MS) and high-performance liquid chromatography hyphenated to ICP-DRC-MS were used for TAs and arsenic species determination, respectively. The DRC with oxygen as a reaction gas was used. Read More

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http://dx.doi.org/10.3390/molecules24030607DOI Listing
February 2019

High arsenic and low lead concentrations in fish and reptiles from Taim wetlands, a Ramsar site in southern Brazil.

Sci Total Environ 2019 Apr 8;660:1004-1014. Epub 2019 Jan 8.

Laboratório de Toxicologia, Instituto de Ciências Biológicas (ICB), Universidade Federal do Rio Grande - FURG, 96203-900 Rio Grande, RS, Brazil. Electronic address:

The pollution caused by heavy metals and metalloids represent an emerging threat to wetlands worldwide. Herein we examined the concentrations of arsenic (As) and lead (Pb) in fish and aquatic/semi-aquatic reptiles from Taim wetlands, a Ramsar site located at the southernmost Brazilian coastal plain. A total of 82 individuals from six fish and three reptile species from varied trophic levels were analysed through furnace graphite atomic absorption spectrophotometry. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2019.01.031DOI Listing

Field tests of in-well electrolysis removal of arsenic from high phosphate and iron groundwater.

Sci Total Environ 2018 Dec 20;644:1630-1640. Epub 2018 Jul 20.

State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, 388 Lumo Road, Wuhan 430074, PR China.

Subsurface arsenic (As) removal has been proposed for in situ immobilizing As in aquifers at a low cost and without post-disposal of As-containing wastes. However, the results reported for field tests are very limited, particularly when high As, phosphate (P) and iron (Fe) coexist in the groundwater. Herein the performance of single- and multiple-well operations was evaluated for in situ removing groundwater As in Jianghan Plain, central China. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2018.07.230DOI Listing
December 2018

Biogeochemical phosphorus cycling in groundwater ecosystems - Insights from South and Southeast Asian floodplain and delta aquifers.

Sci Total Environ 2018 Dec 23;644:1357-1370. Epub 2018 Jul 23.

Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland.

The biogeochemical cycling of phosphorus (P) in South and Southeast Asian floodplain and delta aquifers has received insufficient attention in research studies, even though dissolved orthophosphate (PO) in this region is closely linked with the widespread contamination of groundwater with toxic arsenic (As). The overarching aim of this study was to characterize the enrichment of P in anoxic groundwater and to provide insight into the biogeochemical mechanisms underlying its mobilization, subsurface transport, and microbial cycling. Detailed groundwater analyses and in situ experiments were conducted that focused on three representative field sites located in the Red River Delta (RRD) of Vietnam and the Bengal Delta Plain (BDP) in West Bengal, India. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2018.07.056DOI Listing
December 2018
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Disturbance of trace element and gut microbiota profiles as indicators of autism spectrum disorder: A pilot study of Chinese children.

Environ Res 2019 Apr 5;171:501-509. Epub 2019 Feb 5.

State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, PR China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China; National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, Jiangsu 214122, PR China; Beijing Innovation Centre of Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing 100048, PR China. Electronic address:

Autism spectrum disorder (ASD) is a neuro-developmental disorder that is characterized by impairments of reciprocal social interaction and restricted stereotyped repetitive behavior. The goal of the present study was to investigate the trace element and gut microbiota profiles of Chinese autistic children and screen out potential metallic or microbial indicators of the disease. One hundred and thirty-six children (78 with ASD and 58 healthy controls) aged from 3 to 7 years were enrolled. Read More

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http://dx.doi.org/10.1016/j.envres.2019.01.060DOI Listing
April 2019
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Toxicity of As in Crassostrea virginica (Gmelin, 1791) from the Northern Gulf of Mexico at the presence of Zn and its antioxidant defense mechanisms.

Ecotoxicol Environ Saf 2019 May 8;172:514-522. Epub 2019 Feb 8.

Environmental Science Ph.D. program, Jackson State University, 1400 J.R. Lynch Street, Jackson, MS, United States.

Reactive oxygen species (ROS) such as the free radicals (e.g. hydroxyl, nitric acid, superoxide) cause damage to lipids, proteins and DNA. Read More

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http://dx.doi.org/10.1016/j.ecoenv.2019.02.009DOI Listing
May 2019
2 Reads

GABA mediated reduction of arsenite toxicity in rice seedling through modulation of fatty acids, stress responsive amino acids and polyamines biosynthesis.

Ecotoxicol Environ Saf 2019 Feb 8;173:15-27. Epub 2019 Feb 8.

CSIR-National Botanical Research Institute, Lucknow, India. Electronic address:

γ-aminobutyric acid (GABA) is a free amino acid, which helps to counteract biotic and abiotic stresses in plants. In the present study, two concentrations of GABA, i.e. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S01476513193016
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http://dx.doi.org/10.1016/j.ecoenv.2019.02.017DOI Listing
February 2019
3 Reads

Nrf2 deficiency aggravates the increase in osteoclastogenesis and bone loss induced by inorganic arsenic.

Toxicol Appl Pharmacol 2019 Feb 8;367:62-70. Epub 2019 Feb 8.

School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China. Electronic address:

Arsenic exposure increases the risk of various bone disorders. For instance, chronic exposure to low level arsenic can cause bone resorption by promoting osteoclast differentiation. Osteoclast precursor cells produce hydrogen peroxide after low level arsenic exposure and then undergo differentiation, producing cells which break down bone matrix. Read More

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http://dx.doi.org/10.1016/j.taap.2019.02.003DOI Listing
February 2019