30,617 results match your criteria Arsenic


Arsenic volatilization in flooded paddy soil by the addition of Fe-Mn-modified biochar composites.

Sci Total Environ 2019 Apr 11;674:327-335. Epub 2019 Apr 11.

The New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch 8140, New Zealand.

We investigated the potential role of Fe-Mn-modified biochar composites (FMBCs) in the volatilization of toxic arsenic (As) in flooded paddy soil, by considering As fractionation, enzyme activities, and bacterial abundance. The results indicated that the addition of FMBCs reduced As volatilization from polluted soil, and this effect was more pronounced at higher dosages. Two types of FMBCs (i. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00489697193167
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http://dx.doi.org/10.1016/j.scitotenv.2019.04.144DOI Listing
April 2019
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Arsenic trioxide inhibits EMT in hepatocellular carcinoma by promoting lncRNA MEG3 via PKM2.

Biochem Biophys Res Commun 2019 Apr 16. Epub 2019 Apr 16.

Department of Interventional Radiology, Zhongshan Hospital, Fudan University, China. Electronic address:

Hepatocellular carcinoma (HCC) presents a great burden for patients worldwide, and metastasis of HCC remains problematic. Arsenic trioxide is a traditional drug that has shown excellent efficacy when applied as cancer therapy. Our study explored the antimetastatic mechanism of arsenic trioxide in HCC. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S0006291X193072
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http://dx.doi.org/10.1016/j.bbrc.2019.04.081DOI Listing
April 2019
1 Read

Bioaccumulation and human health implications of essential and toxic metals in freshwater products of Northeast China.

Sci Total Environ 2019 Apr 9;673:768-776. Epub 2019 Apr 9.

CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China. Electronic address:

Bioaccumulation and human health risks of essential and toxic metals in ten species of freshwater products from Northeast China were investigated in this study. The concentrations (mg/kg wet weight) of target metals in aquatic products were: Fe (4.6-165. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2019.04.099DOI Listing

A simple treatment method for phenylarsenic compounds: Oxidation by ferrate (VI) and simultaneous removal of the arsenate released with in situ formed Fe(III) oxide-hydroxide.

Environ Int 2019 Apr 16;127:730-741. Epub 2019 Apr 16.

MOE Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China. Electronic address:

p-Arsanilic acid (p-ASA) and roxarsone (ROX) are two major phenylarsenic feed additives that are still widely used in many countries, and the land application of animal waste containing these compounds could introduce large quantities of arsenic into the environment. In this study, we proposed a treatment scheme for animal waste that involves leaching of p-ASA/ROX out of the manure first by water, then oxidation by ferrate (Fe(VI)) and removal of the arsenate released by in situ formed Fe(III) oxide-hydroxide. The effects of solution pH, dosage of Fe(VI), solution ionic strength, and matrix species on the treatment performance were systematically evaluated. Read More

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http://dx.doi.org/10.1016/j.envint.2019.03.059DOI Listing

Ecotoxicological effects of lanthanum in Mytilus galloprovincialis: Biochemical and histopathological impacts.

Aquat Toxicol 2019 Mar 25;211:181-192. Epub 2019 Mar 25.

Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal. Electronic address:

Inappropriate processing and disposal of electronic waste contributes to the contamination of aquatic systems by various types of pollutants such as the rare-earth elements (REE) in which lanthanum (La) is included. Knowledge on the toxicity of these elements in marine organisms is still scarce when compared to other metals such as mercury (Hg) and arsenic (As). Therefore, this study aims to assess the toxicity of La on the mussel Mytilus galloprovincialis, considered a good bioindicator of aquatic pollution, through the analysis of metabolic, oxidative stress, neurotoxicity and histopathological markers. Read More

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http://dx.doi.org/10.1016/j.aquatox.2019.03.017DOI Listing
March 2019
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Regulation of the Unfolded Protein Response in Yeast by Oxidative Stress.

FEBS Lett 2019 Apr 19. Epub 2019 Apr 19.

Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, United States of America.

In the unfolded protein response (UPR), Ire1 activates Hac1 to coordinate the transcription of hundreds of genes to mitigate ER stress. Recent work in C. elegans suggests that oxidative stress inhibits this canonical Ire1 signaling pathway, activating instead an anti-oxidant stress response. Read More

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https://onlinelibrary.wiley.com/doi/abs/10.1002/1873-3468.13
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http://dx.doi.org/10.1002/1873-3468.13389DOI Listing
April 2019
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Synergistic effect of arsenic trioxide, vismodegib and temozolomide on glioblastoma.

Oncol Rep 2019 Apr 4. Epub 2019 Apr 4.

Department of Medical Joint Materials, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890‑8520, Japan.

The treatment of glioblastoma is a critical health issue, owing to its resistance to chemotherapy. The current standard of treatment is surgical resection, followed by adjuvant radiotherapy and temozolomide treatment. Long‑term local treatment of glioblastoma is rarely achieved and the majority of the patients undergo relapse. Read More

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http://www.spandidos-publications.com/10.3892/or.2019.7100
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http://dx.doi.org/10.3892/or.2019.7100DOI Listing
April 2019
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Novel Ionic Grafts that Enhance Arsenic Removal via Forward Osmosis.

ACS Appl Mater Interfaces 2019 Apr 19. Epub 2019 Apr 19.

Current forward osmosis (FO) membranes are unsuitable for arsenic removal from water because of their poor arsenic selectivity. In this study, we designed and synthesized a series of novel imidazolium-based ionic liquids via one-step quaternization reactions and grafted these novel compounds on to conventional thin-film composite FO membranes for treatment of arsenic-containing water. The newly developed ionic membranes contained a functionalized selective polyamide layer grafted with either carboxylic acid/carboxylate or sulfonate groups that drastically enhanced membrane hydrophilicity and thus FO water permeation. Read More

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http://pubs.acs.org/doi/10.1021/acsami.9b03991
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http://dx.doi.org/10.1021/acsami.9b03991DOI Listing
April 2019
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Sulforaphane Potentially Ameliorates Arsenic Induced Hepatotoxicity in Albino Wistar Rats: Implication of PI3K/Akt/Nrf2 Signaling Pathway.

Cell Physiol Biochem 2019 ;52(5):1203-1222

Department of Zoology, Bharathiar University, Coimbatore, India.

Background/aims: Agriculture and industrial expansion in recent years have resulted in the undue discharge of arsenic into the environment, building arsenic toxicity a major worldwide anxiety. Oxidative stress is considered as the most conspicuous effect of arsenic toxicity. The current study was designed to evaluate the protective ability of sulforaphane (SFN) against arsenic (As) induced hepatotoxicity by activation of PI3K induced Akt and Nrf2 mediated signaling pathway. Read More

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http://dx.doi.org/10.33594/000000082DOI Listing
January 2019

Correlation of arsenic level in drinking water and hair of male respondents of district Sheikhupura.

J Pak Med Assoc 2019 Apr;69(4):499-503

Lahore College For Women University, Lahore, Pakistan.

Objective: To find out the correlation between arsenic concentration in drinking water and biological samples of young male respondents.

Methods: The cross-sectional study was conducted at Lahore College for Women University, Lahore, Pakistan, from March 2013 to February 2015, and comprised biological samples i.e. Read More

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Natural arsenic with a unique order structure: potential for new quantum materials.

Sci Rep 2019 Apr 18;9(1):6275. Epub 2019 Apr 18.

Institute for Materials Research, Tohoku Univ, Sendai, 980-8577, Japan.

Study of arsenic (As) provides guidelines for the development of next-generation materials. We clarify the unique structure of the third crystalline polymorph of natural As (Pnm2-As) by crystallographical experiment and the electronic structure by first-principles computational method. The crystal structure of Pnm2-As is a novel structure in which the basic portions of semi-metalic grey-As and semi-conductor black-As are alternately arranged at the atomic level. Read More

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http://www.nature.com/articles/s41598-019-42561-8
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http://dx.doi.org/10.1038/s41598-019-42561-8DOI Listing
April 2019
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A rapid on-line non-chromatographic hydride generation atomic fluorescence spectrometry technique for speciation of inorganic arsenic in drinking water.

Food Chem 2019 Aug 25;290:10-15. Epub 2019 Mar 25.

Gazi University, Faculty of Pharmacy, Analytical Chemistry Department, 06330 Ankara, Turkey.

A rapid on-line non-chromatographic hydride generation atomic fluorescence spectrometry is described and determination of inorganic arsenic (iAs (III) and iAs (V)) species is achieved within a single run. Thioglycolic acid (TGA) was used for on-line pre-reduction of iAs (V) and quantification of arsenic species was accomplished via calibration with one As form; as iAs (III). Samples and calibration standards were prepared in Tris buffer (pH:7. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S03088146193060
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http://dx.doi.org/10.1016/j.foodchem.2019.03.119DOI Listing
August 2019
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Bone char as a green sorbent for removing health threatening fluoride from drinking water.

Environ Int 2019 Apr 15;127:704-719. Epub 2019 Apr 15.

Research and Engineering Services, Toowoomba, QLD, 4350, Australia.

Millions of people around the world suffer from or prone to health problems caused by high concentration of fluoride in drinking water sources. One of the environmentally friendly and cost-effective ways for removing fluoride is the use of bone char. In this review, the structural properties and binding affinity of fluoride ions from different water sources was critically discussed. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S01604120183316
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http://dx.doi.org/10.1016/j.envint.2019.03.065DOI Listing
April 2019
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Arsenic-tolerant microbial consortia from sediments of Copahue Geothermal System with potential applications in bioremediation.

J Basic Microbiol 2019 Apr 18. Epub 2019 Apr 18.

CINDEFI (Centro de Investigación y Desarrollo en Fermentaciones Industriales), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Calle 50 Nº 227, (1900), La Plata, Argentina.

Although arsenic (As) is recognized as a toxic element for living species, some microorganisms have the ability to tolerate and transform it; recent studies have proposed to take advantage of such capacity to develop sustainable bioremediation strategies. In this work, we evaluated the adaptation to increasing concentrations of As(III) and As(V) of three metabolically-different microbial cultures (heterotrophic, autotrophic-acidophilic and anaerobic) obtained from a sample with low soluble As content from the Copahue geothermal system. At the end of the adaptation process, the heterotrophic culture was able to grow at 20 mM and 450 mM of As(III) and As(V), respectively; the autotrophic-acidophilic culture showed tolerance to 15 mM of As(III) and 150 mM of As(V) while the anaerobic culture only developed in As(V) at concentrations up to 50 mM. Read More

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http://dx.doi.org/10.1002/jobm.201800628DOI Listing

Isolation of arsenic accumulating bacteria from garbage leachates for possible application in bioremediation.

Iran J Microbiol 2019 Feb;11(1):60-66

Department of Microbiology and Immunology, Faculty of Medicine, Qom University of Medical Sciences, Qom, Iran.

Background And Objectives: Bioremediation is a process to reduce toxic heavy-metals, such as arsenic, in the environment using microorganisms. This study aimed to isolate arsenic remediating microbial strains from garbage leachates and to evaluate the effects of several factors on bioremediation by isolated strains.

Materials And Methods: After isolating arsenic-resistant bacteria from garbage leachates and determining their MIC values, Taguchi design of experiments was used to evaluate the effect of arsenic concentration, pH solution, temperature, and contact time on arsenic bioremediation by isolated bacteria. Read More

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6462274PMC
February 2019
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A novel NPM1-RARG-NPM1 chimeric fusion in acute myeloid leukaemia resembling acute promyelocytic leukaemia but resistant to all-trans retinoic acid and arsenic trioxide.

Br J Cancer 2019 Apr 18. Epub 2019 Apr 18.

Department of Hematology, The 2nd Affiliated Hospital of Harbin Medical University, 150001, Harbin, China.

The RARG gene is a member of the nuclear hormone receptor superfamily and shares high homology with RARA and RARB. RARA is involved in translocation with PML in acute promyelocytic leukaemia (APL). Little is known about RARB or RARG rearrangement. Read More

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http://www.nature.com/articles/s41416-019-0456-z
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http://dx.doi.org/10.1038/s41416-019-0456-zDOI Listing
April 2019
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Importance of point defect reactions for the atomic-scale roughness of III-V nanowire sidewalls.

Nanotechnology 2019 Apr 17. Epub 2019 Apr 17.

Departement Physique, Institut Superieur d'Electronique du Nord, 41 Boulevard Vauban, F-59046 Lille Cedex, Lille, FRANCE.

The surface morphology of III-V semiconductor nanowires protected by an arsenic cap and subsequently evaporated in ultrahigh vacuum is investigated with scanning tunneling microscopy and scanning transmission electron microscopy. We show that the changes of the surface morphology as a function of the nanowire composition and the nature of the seed particles are intimately related to the formation and reaction of surface point defects. Langmuir evaporation close to the congruent evaporation temperature causes the formation of vacancies which nucleate and form vacancy islands on {110} sidewalls of self-catalysed InAs nanowires. Read More

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http://dx.doi.org/10.1088/1361-6528/ab1a4eDOI Listing
April 2019
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Chemistry of Layered Pnictogens: Phosphorus, Arsenic, Antimony, and Bismuth.

Angew Chem Int Ed Engl 2019 Apr 17. Epub 2019 Apr 17.

Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technicka 5, 166 28, Prague 6, Czech Republic.

Materials with few layers have been subjected to extensive research for the last few decades owing to their remarkable properties as for example catalysts, optical and electrical devices, or sensors. The properties and electronic structure of these materials can be tailored by the introduction of substituents. In the case of more reactive species, the modification also can improve stability, which is also an important factor with respect to device fabrication. Read More

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http://doi.wiley.com/10.1002/anie.201900811
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http://dx.doi.org/10.1002/anie.201900811DOI Listing
April 2019
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A curious association of chronic homeopathic arsenic ingestion with nonspecific symptoms in a Swiss teenager.

Authors:
Sergio U Dani

Swiss Med Wkly 2019 Apr 17;149:w20071. Epub 2019 Apr 17.

Medawar Institute for Medical and Environmental Research, Acangau Foundation, Paracatu, MG, Brazil, and PizolCare Praxis Sargans, Switzerland.

Arsenic is a toxicant that has no dose threshold below which exposures are not harmful. Here I report a curious association of chronic homeopathic arsenic ingestion with nonspecific symptoms in a Swiss teenager. For about 4 years she had taken globules of a freely purchasable homeopathic remedy containing inorganic arsenic (iAs), infinitesimally diluted to D6 (average arsenic content per single globule: 0. Read More

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https://doi.emh.ch/smw.2019.20071
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http://dx.doi.org/10.4414/smw.2019.20071DOI Listing
April 2019
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Maternal heavy metal exposure, thyroid hormones, and birth outcomes: a prospective cohort study.

J Clin Endocrinol Metab 2019 Apr 17. Epub 2019 Apr 17.

State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, Hubei, China.

Context: Maternal thyroid hormones during pregnancy play a critical role in fetal development. However, whether maternal heavy metal exposure affects their thyroid hormones and the effects on fetal growth are still unclear.

Objective: To explore the impact of heavy metal exposure on maternal thyroid hormones and the potential mediation role of thyroid hormones on birth outcomes. Read More

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https://academic.oup.com/jcem/advance-article/doi/10.1210/jc
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http://dx.doi.org/10.1210/jc.2018-02492DOI Listing
April 2019
2 Reads

Arsenic in Rice Bran Products: In Vitro Oral Bioaccessibility, Arsenic Transformation by Human Gut Microbiota, and Human Health Risk Assessment.

J Agric Food Chem 2019 Apr 16. Epub 2019 Apr 16.

Despite rice consumption, rice bran as a byproduct of rice milling contains higher arsenic (As). The present study evaluated the metabolic potency of in vitro cultured human colon microbiota toward As from 5 rice bran products with 0.471-1. Read More

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http://dx.doi.org/10.1021/acs.jafc.9b02008DOI Listing
April 2019
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Modifying the Parboiling of Rice to Remove Inorganic Arsenic, While Fortifying with Calcium.

Environ Sci Technol 2019 Apr 17. Epub 2019 Apr 17.

Institute for Global Food Security , Queen's University Belfast , David Keir Building, Malone Road , Belfast BT9 5BN , Northern Ireland.

Using village-based rice processing plants in rural Bangladesh, this study considered how parboiling rice could be altered to reduce the content of the carcinogen inorganic arsenic. Parboiling is normally conducted with rough rice (i.e. Read More

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http://dx.doi.org/10.1021/acs.est.8b06548DOI Listing
April 2019
4 Reads

Arsinothricin, an arsenic-containing non-proteinogenic amino acid analog of glutamate, is a broad-spectrum antibiotic.

Commun Biol 2019 15;2:131. Epub 2019 Apr 15.

1Department of Cellular Biology and Pharmacology, Florida International University, Herbert Wertheim College of Medicine, Miami, FL 33199 USA.

The emergence and spread of antimicrobial resistance highlights the urgent need for new antibiotics. Organoarsenicals have been used as antimicrobials since Paul Ehrlich's salvarsan. Recently a soil bacterium was shown to produce the organoarsenical arsinothricin. Read More

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http://dx.doi.org/10.1038/s42003-019-0365-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6465285PMC
April 2019
1 Read

[Research progress in mineral Chinese medicine realgar].

Zhongguo Zhong Yao Za Zhi 2019 Feb;44(3):433-440

School of Chinese Materia Medica, Beijing University of Chinese Medicine Beijing 102488, China.

Realgar is a mineral traditional medicine with definite efficacy. The function of realgar is detoxicating, insecticiding, eliminating dampness and phlegm, etc. It is widely applied in clinical practice by compatibility medicines. Read More

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http://www.cnki.net/kcms/doi/10.19540/j.cnki.cjcmm.20181121.
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http://dx.doi.org/10.19540/j.cnki.cjcmm.20181121.001DOI Listing
February 2019
2 Reads

A case-control analysis of maternal diet and risk of neural tube defects in Bangladesh.

Birth Defects Res 2019 Apr 15. Epub 2019 Apr 15.

Department of Neurology, Boston Children's Hospital, Boston, Massachusetts.

Objectives: Mothers need a nutrient-rich diet for healthy neural tube development. Neural tube defect risk can be reduced through fortifying grain products with folic acid and taking folic acid supplements. Fortification is not required in Bangladesh. Read More

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https://onlinelibrary.wiley.com/doi/abs/10.1002/bdr2.1505
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http://dx.doi.org/10.1002/bdr2.1505DOI Listing
April 2019
2 Reads

Chronic arsenic poisoning from traditional Chinese medicine.

CMAJ 2019 Apr;191(15):E424

Department of Occupational and Environmental Health (Spilchuk, Thompson), University of Toronto, St. Michael's Hospital; Department of Environmental and Occupational Health (Spilchuk), Public Health Ontario, Toronto, Ont.

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http://www.cmaj.ca/lookup/doi/10.1503/cmaj.181176
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http://dx.doi.org/10.1503/cmaj.181176DOI Listing
April 2019
2 Reads

Arsenic in cooked rice foods: Assessing health risks and mitigation options.

Environ Int 2019 Apr 12;127:584-591. Epub 2019 Apr 12.

School of Civil Engineering and Surveying, Faculty of Health, Engineering and Sciences, University of Southern Queensland, West Street, Toowoomba, Queensland, 4350, Australia; UNESCO Chair on Groundwater Arsenic within the 2030 Agenda for Sustainable Development, University of Southern Queensland, West Street, Toowoomba, Queensland, 4350, Australia. Electronic address:

Human exposure to arsenic (As) through the consumption of rice (Oryza sativa L.) is a worldwide health concern. In this paper, we evaluated the major causes for high inorganic As levels in cooked rice foods, and the potential of post-harvesting and cooking options for decreasing inorganic As content in cooked rice, focusing particularly on As endemic areas. Read More

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http://dx.doi.org/10.1016/j.envint.2019.04.004DOI Listing
April 2019
4 Reads
5.559 Impact Factor

Chronic Arsenicosis: Cases from a Nonendemic Area of South Rajasthan.

Indian J Dermatol 2019 Mar-Apr;64(2):164

Department of Dermatology, Rajmata Vijaya Raje Scindia Government Medical College, Bhilwara, Rajasthan, India.

Two adult patients from a village of district Bhilwara, Rajasthan, consulted Skin Department of R. N. T. Read More

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http://www.e-ijd.org/text.asp?2019/64/2/164/254170
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http://dx.doi.org/10.4103/ijd.IJD_704_16DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6440183PMC
April 2019
3 Reads

GLI inhibitors overcome Erlotinib resistance in human pancreatic cancer cells by modulating E-cadherin.

J Chemother 2019 Apr 14:1-9. Epub 2019 Apr 14.

a Cellular and Molecular Research Center , Yasuj University of Medical Sciences , Yasuj , Iran.

Inhibition of hedgehog (Hh) signalling pathway, including its end effector GLI1, can reverse epithelial-to-mesenchymal transition (EMT) which plays an important role in drug resistance of pancreatic cancer cells to Erlotinib (ETB). This study investigated the effect of GLI inhibitors Forskolin (FSK), GANT-61 (GNT), and Arsenic trioxide (ATX) on suppressing the resistance of pancreatic cancer cells to ETB. The effect of GLI inhibitors was evaluated by measuring mRNA expression levels of EMT factors using quantitative RT-PCR. Read More

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https://www.tandfonline.com/doi/full/10.1080/1120009X.2019.1
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http://dx.doi.org/10.1080/1120009X.2019.1584422DOI Listing
April 2019
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MicroRNA-204 potentiates the sensitivity of acute myeloid leukemia cells to arsenic trioxide.

Oncol Res 2019 Apr 8. Epub 2019 Apr 8.

Department of Hematology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shanxi Province, People's Republic of China.

Although arsenic trioxide (ATO) is a well-known anti-leukemic drug used for acute promyelocytic leukemia treatment, the development of ATO resistance is still a big challenge. We previously reported that microRNA-204 (miR-204) was involved in the regulation of acute myeloid leukemia (AML) cell apoptosis, but its role in chemoresistance is poorly understood. In the present study, we showed that miR-204 was significantly increased in AML cells after ATO treatment. Read More

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http://dx.doi.org/10.3727/096504019X15528367532612DOI Listing
April 2019
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Anaerobic digestion to reduce biomass and remove arsenic from As-hyperaccumulator Pteris vittata.

Environ Pollut 2019 Apr 2;250:23-28. Epub 2019 Apr 2.

Soil and Water Sciences Department, University of Florida, Gainesville, FL, 32611, United States; Institute of Environment Remediation and Human Health, South West Forestry University, Yunnan, 650224, China. Electronic address:

The lack of efficient methods to treat As-rich biomass is a drawback for phytoremediation technology. In this study, we applied anaerobic digestion to reduce biomass and remove As from As-rich Pteris vittata biomass. P. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S02697491193019
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http://dx.doi.org/10.1016/j.envpol.2019.03.117DOI Listing
April 2019
6 Reads

Health risk apportionment of arsenic from multiple exposure pathways in Paracatu, a gold mining town in Brazil.

Sci Total Environ 2019 Apr 5;673:36-43. Epub 2019 Apr 5.

Department of Metallurgical and Materials Engineering, Universidade Federal de Minas Gerais, Brazil; National Institute of Science and Technology on Minerals Resources, Water and Biodiversity, INCT-Acqua, Brazil.

This study assessed various exposure pathways of arsenic and their health risk apportionment to the residents of Paracatu, a gold mining town in Brazil. We measured arsenic concentrations in 50 groundwater and surface town water samples from nearby residences, 38 surface soil dust from residential/commercial dwellings and roadside of Paracatu, and 600 airborne dust samples including PM and total suspended particulates (TSP), in additional to a previous reported food survey containing 90 samples from 15 major food categories. For the surface soil dust, bioaccessibility of arsenic as a surrogate of bioavailability was determined using an in vitro physiologically based extraction test (PBET). Read More

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http://dx.doi.org/10.1016/j.scitotenv.2019.04.048DOI Listing
April 2019
2 Reads

Autophagy as a molecular target for cancer treatment.

Eur J Pharm Sci 2019 Apr 11. Epub 2019 Apr 11.

Sabanci University Nanotechnology Research and Application Center (SUNUM), Istanbul 34956, Turkey. Electronic address:

Autophagy is an evolutionarily conserved catabolic mechanism, by which eukaryotic cells recycle or degrades internal constituents through membrane-trafficking pathway. Thus, autophagy provides the cells with a sustainable source of biomolecules and energy for the maintenance of homeostasis under stressful conditions such as tumor microenvironment. Recent findings revealed a close relationship between autophagy and malignant transformation. Read More

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http://dx.doi.org/10.1016/j.ejps.2019.04.011DOI Listing
April 2019
2 Reads

Estimates of the 2015 global and regional disease burden from four foodborne metals - arsenic, cadmium, lead and methylmercury.

Environ Res 2018 Dec 25. Epub 2018 Dec 25.

Department of Epidemiology and Public Health, Sciensano, Brussels, Belgium; Department of Veterinary Public Health and Food Safety, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium. Electronic address:

The impact of foodborne metals on the burden of disease has been largely overlooked, in comparison to the attention on acute diseases associated with infectious foodborne agents. Four articles in this special section describe in detail the burden of disease from foodborne lead, methylmercury, arsenic, and cadmium. Ingested lead and methylmercury are causally associated with lifelong intellectual disability. Read More

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http://dx.doi.org/10.1016/j.envres.2018.12.062DOI Listing
December 2018
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Spatial and interspecies differences in concentrations of eight trace elements in wild freshwater fishes at different trophic levels from middle and eastern China.

Sci Total Environ 2019 Mar 11;672:883-892. Epub 2019 Mar 11.

State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China. Electronic address:

There have been numerous studies on concentrations of trace elements in aquatic ecosystems, but few have been conducted at a large spatial scale. This study collected 410 samples of five wild freshwater fishes at different trophic levels from middle and eastern China. Concentrations of eight trace elements, chromium (Cr), iron (Fe), nickel (Ni), copper (Cu), zinc (Zn), arsenic (As), lead (Pb) and cadmium (Cd) and stable isotope ratios (δC and δN) were determined in dorsal muscle of fishes. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2019.03.134DOI Listing
March 2019
2 Reads

Genetic, epigenetic, and developmental toxicity of Chironomus riparius raised in metal-contaminated field sediments: A multi-generational study with arsenic as a second challenge.

Sci Total Environ 2019 Apr 3;672:789-797. Epub 2019 Apr 3.

School of Environmental Engineering, University of Seoul, 163 Seoulsiripdae-ro, Dongdaemun-gu, Seoul 02504, Republic of Korea. Electronic address:

Ecotoxicity tests conducted under well-controlled lab conditions often do not reflect the real environmental conditions. To this end, we designed an ecotoxicity test using an aquatic midge, Chironomus riparius, raised in metal-contaminated field sediments (MCFS), which reflect the real environmental conditions, for five consecutive generations (F0-F4) followed by a toxic response to arsenic exposure (as a second challenge). The toxic responses (i. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2019.04.013DOI Listing
April 2019
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Exposure to arsenic during embryogenesis impairs olfactory sensory neuron differentiation and function into adulthood.

Toxicology 2019 Apr 10;420:73-84. Epub 2019 Apr 10.

Environmental Toxicology Graduate Program, Clemson University, Clemson, SC, USA; Department of Biological Sciences, Clemson University, Clemson, SC, USA. Electronic address:

Arsenic is a contaminant of food and drinking water. Epidemiological studies have reported correlations between arsenic exposure and neurodevelopmental abnormalities, such as reduced sensory functioning, while in vitro studies have shown that arsenic reduces neurogenesis and alters stem cell differentiation. The goal of this study was assess whether arsenic exposure during embryogenesis reduced olfactory stem cell function and/or numbers, and if so, whether those changes persist into adulthood. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S0300483X183069
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http://dx.doi.org/10.1016/j.tox.2019.04.005DOI Listing
April 2019
5 Reads

Rapid detection of heavy metal-induced toxicity in water using a fed-batch sulfur-oxidizing bacteria (SOB) bioreactor.

J Microbiol Methods 2019 Apr 9. Epub 2019 Apr 9.

Department of Biological Environment, Kangwon National University, 192-1 Hyoja-dong, Gangwon-do, Chuncheon-si 200-701, Republic of Korea. Electronic address:

A fed-batch bioreactor based on sulfur-oxidizing bacteria (SOB) was tested for rapid detection of heavy metal-induced toxicity in water. For this evaluation, SOB were exposed to water contaminated by selenium, mercury, hexavalent chromium, arsenic, cyanide, cadmium, and lead for 2 h and their inhibition rates were analyzed based on changes in electrical conductivity (EC). The results demonstrate that SOB were highly inhibited by selenium, mercury, hexavalent chromium, and arsenic but not by cyanide, cadmium, and lead. Read More

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http://dx.doi.org/10.1016/j.mimet.2019.04.007DOI Listing
April 2019
2 Reads

Sex-Specific Differences in Cognitive Abilities Associated with Childhood Cadmium and Manganese Exposures in School-Age Children: a Prospective Cohort Study.

Biol Trace Elem Res 2019 Apr 11. Epub 2019 Apr 11.

School of Public Health/Key Laboratory of Public Health Safety of Ministry of Education/Key Lab of Health Technology Assessment, National Health Commission of the People's Republic of China, Fudan University, No. 130 Dong'an Road, Shanghai, 200032, China.

To examine sex-specific associations of neonatal and childhood exposure to eight trace elements with cognitive abilities of school-age children. The association between exposure and effects was assessed among 296 school-age children from a population-based birth cohort study, who had manganese (Mn), cadmium (Cd), and lead (Pb) exposure measured in cord blood and chromium (Cr), manganese, cobalt (Co), copper (Cu), arsenic (As), selenium (Se), cadmium, and lead exposure quantified in spot urine. Cognitive abilities were assessed using the Wechsler Intelligence Scale for Children-Chinese Revised (WISC-CR). Read More

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http://dx.doi.org/10.1007/s12011-019-01703-9DOI Listing
April 2019
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The Relationship Between Human Adenovirus and Metals and Semimetals in the Waters of the Rio Doce, Brazil.

Arch Environ Contam Toxicol 2019 Apr 11. Epub 2019 Apr 11.

Department of Civil Engineering, Escola de Minas, Federal University of Ouro Preto, Campus Universitário Morro do Cruzeiro, s/n, Ouro Preto, MG, 35400-000, Brazil.

The 2015 rupture of the Fundão dam near the district of Bento Rodrigues in Mariana, Minas Gerais, Brazil, released around 50 million m of iron ore tailings. The first tributary of the Rio Doceto receive this waste was the Gualaxo do Norte River. Many groups in Brazil and from around the world have studied the environmental and social impacts of this disaster. Read More

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http://dx.doi.org/10.1007/s00244-019-00625-wDOI Listing
April 2019
2 Reads

Production and characteristics of sewage sludge in Italy.

Water Sci Technol 2019 Feb;79(4):619-626

UTILITALIA Association of the Water, Energy and Environment Utilities, Rome, Italy.

Results of an extended survey on the production and quality of sewage sludge produced in Italy are herewith reported and discussed. Data are relevant to 2015. They were provided by 84 Italian water utilities responsible for municipal wastewater treatment serving approximately 35 million persons. Read More

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https://iwaponline.com/wst/article/79/4/619/65979/Production
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http://dx.doi.org/10.2166/wst.2019.064DOI Listing
February 2019
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Maternal exposure to arsenic and mercury in small-scale gold mining areas of Northern Tanzania.

Environ Res 2019 Mar 19;173:432-442. Epub 2019 Mar 19.

Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, 3280 Hospital Drive NW, Calgary, AB, T2N 4Z6, Canada; Department of Pediatrics, Cumming School of Medicine, University of Calgary, 28 Oki Drive NW, Calgary, AB, T3A 6A8, Canada; Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Room 294, Heritage Medical Research Building, 3330 Hospital Drive, NW, Calgary, AB, T2N 4N1, Canada. Electronic address:

Artisanal and small-scale gold mining (ASGM) in Tanzania results in occupational exposures and environmental contamination to toxic chemical elements such as arsenic and mercury. Populations living in such areas may be exposed by various routes, and prenatal exposure to arsenic and mercury has been associated with adverse birth outcomes and developmental delays. The aim of this study was to determine if levels of arsenic and mercury differed among pregnant women living in areas with and without ASGM activities in Northern Tanzania. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00139351193015
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http://dx.doi.org/10.1016/j.envres.2019.03.031DOI Listing
March 2019
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Synthesis and characterization of zeolite-based composites functionalized with nanoscale zero-valent iron for removing arsenic in the presence of selenium from water.

J Hazard Mater 2019 Apr 1;373:810-819. Epub 2019 Apr 1.

Center for the Development of Nanoscience and Nanotechnology, CEDENNA, 9170124, Santiago, Chile; Facultad de Química y Biología, Universidad de Santiago de Chile, Av. B. O'Higgins, 3363, Santiago, Chile.

We studied the sorption of As(V) in single and multi-component (As(V)-Se(VI)) aqueous systems using nanoscale zero-valent iron (nZVI) and nZVI-functionalized zeolite (Z-nZVI) adsorbents. Morphological and physico-chemical characterization of the adsorbents was conducted using X-ray diffraction (XRD), scanning electron microscopy (SEM), surface area and electrophoretic mobility measurements. SEM and XRD analyses showed that Fe-nanoparticle size and crystallinity were better preserved in Z-nZVI than nZVI after As(V) sorption. Read More

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http://dx.doi.org/10.1016/j.jhazmat.2019.03.125DOI Listing
April 2019
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Understanding major NOM properties controlling its interactions with phosphorus and arsenic at goethite-water interface.

Water Res 2019 Mar 29;157:372-380. Epub 2019 Mar 29.

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

Among natural organic matter (NOM), oxyanions and metal (hydr)oxides, a complicated interaction exists in natural aquatic and terrestrial systems and in waste waters. Effects of seven types of NOM (four humic acids (HA), three fulvic acids (FA)) that vary in properties on the adsorption of oxyanions, including phosphate, arsenate and arsenite, at goethite-water interface were quantitatively studied. Results show that the adsorption of oxyanions to goethite is decreased by the presence of NOM, especially for phosphate and arsenate at low pH. Read More

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http://dx.doi.org/10.1016/j.watres.2019.03.077DOI Listing
March 2019
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Arsenic migration during co-processing of secondary residues from ammonium paratungstate production in cement kiln.

Environ Sci Pollut Res Int 2019 Apr 10. Epub 2019 Apr 10.

Jiangsu Power Design Institute Co, Ltd. of China Energy Engineering Group, Nanjing, 211102, China.

To reduce the environmental pollution caused by ammonium paratungstate (APT) production in the Ganzhou area in China, simulated experiments in laboratory and field experiments in cement kilns were performed. The migration characteristics of As in secondary residues (thermometallurgy and hydrometallurgy residues) from APT production in cement kilns were similar, and As in the residues existed in the form of sulfides. When the residues were fed at the kiln inlet, the As in the residues was completely distributed in the clinker after a new mass balance of As was reestablished in a very short time. Read More

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http://dx.doi.org/10.1007/s11356-019-04821-yDOI Listing
April 2019
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Exploring telomere length in mother-newborn pairs in relation to exposure to multiple toxic metals and potential modifying effects by nutritional factors.

BMC Med 2019 Apr 11;17(1):77. Epub 2019 Apr 11.

Institute of Environmental Medicine, Karolinska Institutet, P.O. Box 210, SE-171 77, Stockholm, Sweden.

Background: The uterine environment may influence telomere length at birth, which is essential for cellular function, aging, and disease susceptibility over the lifespan. However, little is known about the impact of toxic chemicals on early-life telomeres. Therefore, we assessed the potential impact of multiple toxic metals on relative telomere length (rTL) in the maternal blood, cord blood, and placenta, as well as the potential modifying effects of pro-oxidants. Read More

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http://dx.doi.org/10.1186/s12916-019-1309-6DOI Listing
April 2019
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A transferable spectroscopic diagnosis model for predicting arsenic contamination in soil.

Sci Total Environ 2019 Jun 14;669:964-972. Epub 2019 Mar 14.

The Key Laboratory of Metalorganic Prediction of Nonferrous Metals and Geological Environment Monitoring, School of Geosciences and Info-Physic Central South University, Changsha, Hunan 410083, China.

Visible and near-infrared reflectance (VNIR) spectroscopy is considered to be a potential and efficient means for monitoring soil arsenic (As) contamination. While current studies mainly focus on the evaluation of models' performance when training and verification samples are collected from the same region, whether the model developed at a specific region can be transferred to other regions is still unclear. To answer this question, this study collected a total of 247 samples for training and verification from regions with different geographical conditions, which are Yuanping and Baoding in northern China, Chenzhou and Hengyang in southern China. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2019.03.186DOI Listing
June 2019
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Toward Realizing Multifunctionality: Photoactive and Selective Adsorbents for the Removal of Inorganics in Water Treatment.

Acc Chem Res 2019 Apr 10. Epub 2019 Apr 10.

School of Forestry and Environmental Studies , Yale University , 195 Prospect Street , New Haven , Connecticut 06511 , United States.

Persistent and potentially toxic inorganic oxoanions (e.g., arsenic and selenium) are one class of contaminants of concern in drinking water for which treatment technologies must be improved. Read More

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http://dx.doi.org/10.1021/acs.accounts.8b00668DOI Listing

Tracing the Dynamic Changes of Element Profiles by Novel Soil Porewater Samplers with Ultralow Disturbance to Soil-Water Interface.

Environ Sci Technol 2019 Apr 19. Epub 2019 Apr 19.

Department of Health and Environmental Sciences , Xi'an Jiaotong-Liverpool University , 111 Ren'ai Road , Suzhou , Jiangsu 215123 , P. R. China.

In flooded soils, soil-water interface (SWI) is the key zone controlling biogeochemical dynamics. Chemical species and concentrations vary greatly at micro- to cm-scales. Techniques able to track these changing element profiles both in space and over time with appropriate resolution are rare. Read More

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http://pubs.acs.org/doi/10.1021/acs.est.8b05390
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http://dx.doi.org/10.1021/acs.est.8b05390DOI Listing
April 2019
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Selective and Efficient Arsenic Recovery from Water through Quaternary Amino-Functionalized Silica.

Polymers (Basel) 2018 Jun 7;10(6). Epub 2018 Jun 7.

Laboratory of Asymmetric Synthesis, Instituto de Química de Recursos Naturales, Universidad de Talca, 3460000 Talca, Chile.

The free-radical graft polymerization of acryloxyethyl-trimethylammonium chloride onto commercial silica particles was studied experimentally for extraction of arsenic ions from water. Two steps were used to graft acryloxyethyl-trimethylammonium chloride (Q) onto the surface of nanosilica: anchoring vinyltrimethoxysilane (VTMSO) onto the surface of silica to modify it with double bonds and then grafting Q onto the surface of silica with potassium persulfate as an initiator. The products were characterized by Fourier-transform infrared (FT-IR), the thermogravimetric analysis (TGA), scanning electron microscopy (SEM), C, Si nuclear magnetic resonance (NMR), and X-ray powder diffraction (XRD). Read More

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http://www.mdpi.com/2073-4360/10/6/626
Publisher Site
http://dx.doi.org/10.3390/polym10060626DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6404077PMC
June 2018
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