344,650 results match your criteria Biometals : an international journal on the role of metal ions in biology biochemistry and medicine[Journal]


Enhancement and improvement of selenium in soil to the resistance of rape stem against Sclerotinia sclerotiorum and the inhibition of dissolved organic matter derived from rape straw on mycelium.

Environ Pollut 2020 May 19;265(Pt A):114827. Epub 2020 May 19.

College of Resources and Environment, Huazhong Agricultural University, Hubei Provincial Engineering Laboratory for New-Type Fertilizer, Research Center of Trace Elements, Hubei Key Laboratory of Soil Environment and Pollution Remediation, Wuhan, 430070, China; Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Wuhan, 430070, China. Electronic address:

Sclerotinia stem rot (SSR), caused by Sclerotinia sclerotiorum (S. sclerotiorum), one of the most destructive diseases in many crops including Brassica napus L. The extensive use of fungicides to control S. Read More

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http://dx.doi.org/10.1016/j.envpol.2020.114827DOI Listing

Microelement composition of serum in Dolgans, indigenous inhabitants of the Russian Arctic, in the conditions of industrial development of territories.

Int J Circumpolar Health 2020 Dec;79(1):1764304

M.K. Ammosov North-Eastern Federal University , Yakutsk, Russia.

The geochemical conditions of landscapes are the content in the environment of certain chemical elements and their compounds, the lack or excess of which causes deviations in the state of human health. This problem has arisen in connection with the extraction of alluvial diamonds and the forthcoming development of the Tomtor deposit of rare-earth metals in the territories where the indigenous peoples of the North live. The study included 107 indigenous people of the North, belonging to the ethnic group of Dolgans living in the village of Yuryung-Khaya, Anabar district, Yakutia of Russia. Read More

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http://dx.doi.org/10.1080/22423982.2020.1764304DOI Listing
December 2020

Removal of boron and silicon by a modified resin and their competitive adsorption mechanisms.

Environ Sci Pollut Res Int 2020 May 25. Epub 2020 May 25.

School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, 518055, China.

Boron and silicon are essential trace elements for living organisms. However, these are undesirable in excess amounts owing to the toxic effects of boron on plants, animals, and humans, and the silica scale formation by silicon in water treatment processes. Herein, a new diol-type adsorbent (T-resin) was synthesized by grafting tiron (disodium 4,5-dihydroxy-1,3-benzenedisulfonate) onto an ion-exchange resin (grafting amount is 1. Read More

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http://dx.doi.org/10.1007/s11356-020-09308-9DOI Listing

Non-invasive identification of potato varieties and prediction of the origin of tuber cultivation using spatially offset Raman spectroscopy.

Anal Bioanal Chem 2020 May 25. Epub 2020 May 25.

Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, 77843, USA.

High starch content, simplicity of cultivation, and high productivity make potatoes (Solanum tuberosum) a staple in the diet of people around the world. On average, potatoes are composed of 83% water and 12% carbohydrates, and the remaining 4% includes proteins, vitamins, and other trace elements. These proportions vary depending on the type of potato and location where they were cultivated. Read More

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http://dx.doi.org/10.1007/s00216-020-02706-5DOI Listing

CrVI and Trace Element Contaminated Groundwater Systems Connected with Ophiolitic Rocks.

Bull Environ Contam Toxicol 2020 May 25. Epub 2020 May 25.

Hydrogeological Engineering Section, Department of Geological Engineering, Hacettepe University, 06532, Ankara, Turkey.

The level and distribution of chromium (as total chromium and CrVI) and other trace elements were investigated from surface and groundwater samples collected over three periods (n = 155) from Mersin (Turkey) in terms of their origins and potential health risk. The maximum total chromium is 41 µg/L and some of the samples have CrVI contents above 5 µg/L, which is the maximum permissible level of CrVI under Italian regulations. The dominant water facies are Ca-HCO and Mg-HCO types based on the Piper diagram. Read More

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http://dx.doi.org/10.1007/s00128-020-02887-wDOI Listing

Global diversity of dietary intakes and standards for zinc, iron, and copper.

J Trace Elem Med Biol 2020 May 4;61:126515. Epub 2020 May 4.

T.S Painter Hall 3.18, The University of Texas at Austin, Department of Nutritional Sciences, College of Natural Sciences, 103W 24th St A2703, Austin, TX, 78712, United States. Electronic address:

Background: The essentiality of trace elements in human diets is well recognized and adequate levels are a critical component of optimal health. To date, public health efforts have focused primarily on macronutrients or trace minerals that are easily analyzed. The goal of this research is to provide assessment of the dietary standards developed for Zn, Fe, and Cu in 100+ developed, marginal, and developing countries. Read More

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http://dx.doi.org/10.1016/j.jtemb.2020.126515DOI Listing

Particle-induced oxidative damage by indoor size-segregated particulate matter from coal-burning homes in the Xuanwei lung cancer epidemic area, Yunnan Province, China.

Chemosphere 2020 May 11;256:127058. Epub 2020 May 11.

School of Biosciences, Cardiff University, Museum Avenue, Cardiff, CF10, 3US, UK. Electronic address:

Size-segregated samples of airborne particulate matter were collected at the coal-burning homes of the Hutou high lung cancer epidemic village and a comparison site Xize village of the Xuanwei County, Yuanan Province, by an Anderson Cascade Impact Sampler in winter and spring to study the toxicological characteristics of different-sized particles. The DNA damage caused by the water-soluble fractions of these size-segregated particles was analyzed by the plasmid scission assay, and the trace element compositions were determined by Inductively Coupled Plasma Mass Spectrometry. The DNA damage rate from the airborne particles in the high lung cancer incidence area was higher than that in Xize village. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2020.127058DOI Listing

Carbapenem Resistance-Encoding and Virulence-Encoding Conjugative Plasmids in Klebsiella pneumoniae.

Trends Microbiol 2020 May 21. Epub 2020 May 21.

Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong. Electronic address:

Klebsiella pneumoniae has an exceptional ability to acquire exogenous resistance-encoding and hypervirulence-encoding genetic elements. In this review we trace the key evolutionary routes of plasmids involved in the dissemination of such elements; we observed diverse, but convergent, evolutionary paths that eventually led to the emergence of conjugative plasmids which simultaneously encode carbapenem resistance and hypervirulence. One important evolutionary feature of these plasmids is that they contain a wide range of transposable elements that enable them to undergo frequent genetic transposition, resulting in plasmid fusion and presumably better adaptation of the plasmid to the bacterial host. Read More

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http://dx.doi.org/10.1016/j.tim.2020.04.012DOI Listing

Cytosolic and Metallothionein-Bound Hepatic Metals and Detoxification in a Sentinel Teleost, Dules auriga, from Southern Rio de Janeiro, Brazil.

Biol Trace Elem Res 2020 May 23. Epub 2020 May 23.

Laboratório de Biologia e Tecnologia Pesqueira, Departamento de Biologia Marinha, Instituto de Biologia, UFRJ, Av. Carlos Chagas Filho, 373, CCS, Bl. A., Rio de Janeiro, Rio de Janeiro, 21941-541, Brazil.

Dules auriga, a native Brazilian teleost, was applied as a sentinel species regarding metal contamination at Ilha Grande Bay, previously considered a reference site in Southeastern Brazil. Cytosolic (S50) and metallothionein-bound (HTS50) hepatic iron (Fe), zinc (Zn), copper (Cu), manganese (Mn), cadmium (Cd), and silver (Ag) were determined by inductively coupled plasma optical emission spectrometry (ICP-OES), while metallothionein (MT) concentrations were determined by polarography. Ag concentrations in both cytosolic fractions were below the limit of detection. Read More

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http://dx.doi.org/10.1007/s12011-020-02195-8DOI Listing

Emission control strategies of hazardous trace elements from coal-fired power plants in China.

J Environ Sci (China) 2020 Jul 9;93:66-90. Epub 2020 Mar 9.

School of Energy and Environmental Engineering, Tianjin Key Laboratory of Clean Energy Utilization and Pollution Control, Hebei University of Technology, Tianjin, China.

China's energy dependents on coal due to the abundance and low cost of coal. Coal provides a secure and stable energy source in China. Over-dependence on coal results in the emission of Hazardous Trace Elements (HTEs) including selenium (Se), mercury (Hg), lead (Pb), arsenic (As), etc. Read More

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http://dx.doi.org/10.1016/j.jes.2020.02.025DOI Listing

Effect of natural organic matter on thallium and silver speciation.

J Environ Sci (China) 2020 Jul 16;93:185-192. Epub 2020 Apr 16.

Université de Paris, Institut de physique du globe de Paris, CNRS, F-75005 Paris, France. Electronic address:

Natural organic matter (NOM) is known to play an important role in the transport and binding of trace metal elements in aquatic and soil systems. Thallium is a pollutant for which the extent of the role played by NOM is poorly known. Consequently, this study investigates thallium(I) and its complexation to a purified humic substance as proxy for NOM. Read More

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http://dx.doi.org/10.1016/j.jes.2020.04.001DOI Listing

On-line microcolumn-based dynamic leaching method for investigation of lead bioaccessibility in shooting range soils.

Chemosphere 2020 May 10;256:127022. Epub 2020 May 10.

School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore; Nanyang Environment and Water Research Institute, Residues and Resources Reclamation Center, 1 Cleantech Loop, CleanTech One, Singapore 637141, Singapore. Electronic address:

In this work, a miniaturized flow-through leaching test is presented for rapid screening of potential chemical extractants to explore the bioaccessibility of lead (Pb) in contaminated shooting range soils in Valkeala, Finland. The method combines the versatility of microcolumn-based extraction methods with on-line inductively coupled plasma optical emission spectrometry (ICP OES) analysis for expedient assessment of the magnitude of the bioaccessible pools and the leaching kinetics of lead from polluted soils under variable physicochemical scenarios. Acids and salt solutions were studied as potential extractants. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2020.127022DOI Listing

Medium term post-bariatric surgery deficit of vitamin B12 is predicted by deficit at time of surgery.

Clin Nutr 2020 Apr 25. Epub 2020 Apr 25.

Inserm UMRS 1256 N-GERE (Nutrition-Genetics-Environmental Risks) - University de Lorraine, Faculty of Medicine, Nancy, France; Department of Endocrinology Diabetology and Nutrition, Regional University Hospital of Nancy (CHRU Nancy), Nancy, France. Electronic address:

Background: Patients with morbid obesity have a high risk of deficits in micronutrients, after bariatric surgery. The reasons why systematic use of multivitamin and trace element supplements cannot prevent all deficits are complex and should deserve more attention. Little is known about the influence of micronutrient deficits at surgery. Read More

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http://dx.doi.org/10.1016/j.clnu.2020.04.029DOI Listing
April 2020
4.476 Impact Factor

Health risk-oriented source apportionment of PM-associated trace metals.

Environ Pollut 2020 Jul 23;262:114655. Epub 2020 Apr 23.

Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong; The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China. Electronic address:

In health-oriented air pollution control, it is vital to rank the contributions of different emission sources to the health risks posed by hazardous components in airborne fine particulate matters (PM), such as trace metals. Towards this end, we investigated the PM-associated metals in two densely populated regions of China, the Yangtze River Delta (YRD) and Pearl River Delta (PRD) regions, across land-use gradients. Using the positive matrix factorization (PMF) model, we performed an integrated source apportionment to quantify the contributions of the major source categories underlying metal-induced health risks with information on the bioaccessibility (using simulated lung fluid) and speciation (using synchrotron-based techniques) of metals. Read More

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http://dx.doi.org/10.1016/j.envpol.2020.114655DOI Listing

Breaking down insect stoichiometry into chitin-based and internal elemental traits: Patterns and correlates of continent-wide intraspecific variation in the largest European saproxylic beetle.

Environ Pollut 2020 Jul 13;262:114064. Epub 2020 Mar 13.

Hebelstraße 12, D-69190, Walldorf, Germany. Electronic address:

Stoichiometric, trophic and ecotoxicological data have traditionally been acquired from patterns of variation in elemental traits of whole invertebrate bodies, whereas the critical issue of the extracellular origin of some portion of elements, such as those present in ingested food and internal organs, has been ignored. Here we investigated an unexplored, yet crucial, question relating to whether, and to what degree, metals from two major body fractions: exoskeleton (elytra) and internal (body organs with gut material present in abdomens), are correlated with each other in wild populations of the largest European saproxylic insect, the Stag Beetle Lucanus cervus, and how metals from these two fractions vary with insect size and local habitat conditions. We examined the continent-wide variation in the concentrations of 12 chemical elements (Ca, Mg, K, Na, Mn, Fe, Zn, Cu, As, Cd, Pb and Ni) measured in the elytra and abdomen of specimens from 28 populations inhabiting an urban-woodland habitat gradient across the species' entire distributional range from Spain to Russia. Read More

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http://dx.doi.org/10.1016/j.envpol.2020.114064DOI Listing

Distribution of Trace Metals in Street Dusts and Tree Leaves and Their Source Identification in a Mid-Populated Anatolian City.

Bull Environ Contam Toxicol 2020 May 21. Epub 2020 May 21.

Department of Physics, Faculty of Science and Letters, Yildiz Technical University, Davutpaşa Campus, 34220, Istanbul, Turkey.

Sivas is a central Anatolian city in Turkey with mid-population. Due to its geographical structure high air pollution episodes can be observed in the atmosphere of Sivas. A study with city wide sampling campaign can help to identify the possible sources. Read More

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http://dx.doi.org/10.1007/s00128-020-02882-1DOI Listing

Hair trace element concentrations in autism spectrum disorder (ASD) and attention deficit/hyperactivity disorder (ADHD).

J Trace Elem Med Biol 2020 Apr 28;61:126539. Epub 2020 Apr 28.

Yaroslavl State University, Sovetskaya St., 14, 150003, Yaroslavl, Russia; IM Sechenov First Moscow State Medical University, Bolshaya Pirogovskaya St., 9, 119146, Moscow, Russia; RUDN University, Miklukho-Maklaya St., 6, 117198, Moscow, Russia. Electronic address:

Background: The existing data demonstrate that alteration of trace element and mineral status in children with neurodevelopmental disorders including ASD and ADHD. However, comparative analysis of the specific patterns of trace element and mineral metabolism in children with ASD and ADHD was not performed. Therefore, the primary objective of the present study was to assess hair trace element and mineral levels in boys with ADHD, ASD, as well as ADHD with ASD. Read More

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http://dx.doi.org/10.1016/j.jtemb.2020.126539DOI Listing

The relevance of particle size distribution and bioaccessibility on human health risk assessment for trace elements measured in indoor dust.

Sci Total Environ 2020 Mar 25;733:137931. Epub 2020 Mar 25.

Department of Earth and Environmental Sciences, Faculty of Science & Engineering, Macquarie University, Sydney, NSW 2109, Australia. Electronic address:

Trace metal contaminants in indoor dust pose a significant potential exposure risk to people because of the time spent indoors and the readily ingested and inhaled fine-grained composition of indoor dusts. However, there is limited trace metal data available on the specific interaction of dust particle size fraction and their respective bioaccessibility/bioavailability and its consequent effect on health risk assessment. This study addresses this knowledge gap by examining bioaccessible and bioavailable trace element concentrations (As, Cr, Cu, Mn, Ni, Pb, Zn) in 152 discrete size fractions from 38 indoor vacuum samples from a larger dataset (n = 376) of indoor dust from Sydney, Australia. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.137931DOI Listing

Chemical assessment of marine sediments in vicinity of Norwegian fish farms - A pilot study.

Sci Total Environ 2020 May 4;732:139130. Epub 2020 May 4.

Department of Chemistry, Norwegian University of Science and Technology, NTNU, Trondheim 7491, Norway.

While aquaculture is growing rapidly all over the world and generating many economic benefits, so have the environmental concerns about the externalities posed by the fish-farming industry. The distribution profiles of organic compounds and inorganic elements were explored in marine surface sediments collected in proximity of two active Norwegian fish farms, Hestøya and Nørholmen (<200-1100 m from the perimeter edge of the installations). Overall, the sediment organic matter (SOM) content was 7. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.139130DOI Listing

Pollution assessment and spatial distribution of trace elements in soils of Arak industrial area, Iran: Implications for human health.

Environ Res 2020 Apr 25;187:109577. Epub 2020 Apr 25.

Department of Environmental Chemistry, IDAEA-CSIC, c/Jordi Girona, 18-26, E-08034 Barcelona, Spain. Electronic address:

Emerging industrial hubs have resulted in soil and dust pollution by trace elements, being a potential source and pathway for human exposure to nearby cities. The aim of this study was to determine the spatial distribution, levels, sources and health risk assessment of metals and arsenic in soils of Arak industrial area, Iran. A total of 235 topsoil (0-5 cm) samples were collected from the vicinity of Arak, and the concentrations of As, Zn, Ni, Pb, Cu and Cd were 152, 104, 93, 38, 14 and 1. Read More

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http://dx.doi.org/10.1016/j.envres.2020.109577DOI Listing

Assessment of potential human health risk of trace element in wild edible mushroom species collected from Yunnan Province, China.

Environ Sci Pollut Res Int 2020 May 20. Epub 2020 May 20.

Institute of Quality Standards and Testing Technology, Yunnan Academy of Agricultural Sciences, Kunming, 650223, China.

Wild edible mushrooms are rich in nutritions and popular among people, but wild edible mushrooms easily accumulate potentially harmful trace elements, and excessive intake will harm health. The aim of this study was to investigate the potential health hazards of long-term intake of wild edible mushrooms in Yunnan Province, China. The concentrations of trace element (As, Cd, Cr, Cu, Hg, Pb, Ni, and Zn) in 19 species of wild edible mushrooms in Yunnan Province were determined by inductively coupled plasma mass spectrometry (ICP-MS). Read More

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http://dx.doi.org/10.1007/s11356-020-09242-wDOI Listing

Esterase Inhibition and Copper Release from Copper Iodide Dental Adhesives - An In Vitro Study.

J Adhes Dent 2020 ;22(3):265-274

Purpose: To investigate whether dental adhesives modified with polyacrylic acid copper iodide particles could inhibit esterase activity in vitro and the copper release rate from resin matrices, as well as the correlation between the two variables.

Materials And Methods: Different concentrations of copper iodide (0.1, 0. Read More

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http://dx.doi.org/10.3290/j.jad.a44550DOI Listing

Integration of transcriptome-wide association study and messenger RNA expression profile to identify genes associated with osteoarthritis.

Bone Joint Res 2020 Mar 16;9(3):130-138. Epub 2020 May 16.

Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, School of Public Health, Health Science Center, Xi'an Jiaotong University, Xi'an, China.

Aims: Osteoarthritis (OA) is the most prevalent joint disease. However, the specific and definitive genetic mechanisms of OA are still unclear.

Methods: Tissue-related transcriptome-wide association studies (TWAS) of hip OA and knee OA were performed utilizing the genome-wide association study (GWAS) data of hip OA and knee OA (including 2,396 hospital-diagnosed hip OA patients versus 9,593 controls, and 4,462 hospital-diagnosed knee OA patients versus 17,885 controls) and gene expression reference to skeletal muscle and blood. Read More

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http://dx.doi.org/10.1302/2046-3758.93.BJR-2019-0137.R1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7229301PMC

ICP-MS trace element analysis in serum and whole blood.

PLoS One 2020 20;15(5):e0233357. Epub 2020 May 20.

Furtwangen University, Institute of Precision Medicine, VS-Schwenningen, Germany.

Trace elements and minerals are compounds that are essential for the support of a variety of biological functions and play an important role in the formation of and the defense against oxidative stress. Here we describe a technique, allowing sequential detection of the trace elements (K, Zn, Se, Cu, Mn, Fe, Mg) in serum and whole blood by an ICP-MS method using single work-up, which is a simple, quick and robust method for the sequential measurement and quantification of the trace elements Sodium (Na), Potassium (K), Calcium (Ca), Zinc (Zn), Selenium (Se), Copper (Cu), Iron (Fe), Manganese (Mn) and Magnesium (Mg) in whole blood as well as Copper (Cu), Selenium (Se), Zinc (Zn), Iron (Fe), Magnesium (Mg), Manganese (Mn), Chromium (Cr), Nickel (Ni), Gold (Au) and Lithium (Li) in human serum. For analysis, only 100 μl of serum or whole blood is sufficient, which make this method suitable for detecting trace element deficiency or excess in newborns and infants. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0233357PLOS

Biomolecular approaches to understanding metal tolerance and hyperaccumulation in plants.

Metallomics 2020 May 20. Epub 2020 May 20.

Molecular Genetics and Physiology of Plants, Faculty of Biology and Biotechnology, Ruhr University Bochum, 44801 Bochum, Germany.

Trace metal elements are essential for plant growth but become toxic at high concentrations, while some non-essential elements, such as Cd and As, show toxicity even in traces. Thus, metal homeostasis is tightly regulated in plants. Plant species colonising metalliferous soils have evolved mechanisms to hypertolerate metals and, in rare cases, can hyperaccumulate them in excess amounts in their shoots. Read More

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http://dx.doi.org/10.1039/d0mt00043dDOI Listing

A Comprehensive Characterization of Particulate Matter, Trace Elements and Gaseous Emissions of Piston-Engine Aircraft.

Environ Sci Technol 2020 May 19. Epub 2020 May 19.

The gaseous and PM emissions of a piston-engine aircraft during ground operations at different engine states (six engine speed points and three air/fuel mixtures) representing certain flight phases were concurrently measured from the exhaust duct. PM emissions were sampled on a 47 mm-diameter polytetrafluoroethylene (PTFE) filter in order to be analyzed with an Inductively Coupled Plasma Mass Spectrometry (ICP-MS/MS) to identify the presence and level of forty-eight elements. The most abundant element is found to be Pb (med=4. Read More

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http://dx.doi.org/10.1021/acs.est.0c00815DOI Listing

Concentrations of toxic metals and essential trace elements vary among individual neurons in the human locus ceruleus.

PLoS One 2020 19;15(5):e0233300. Epub 2020 May 19.

School of Chemistry and Sydney Analytical, The University of Sydney, Sydney, New South Wales, Australia.

Objective: Damage to locus ceruleus neurons could play a part in the pathogenesis of neurodegenerative disorders such as Alzheimer's disease, Parkinson's disease, and multiple sclerosis because of impairment of the blood-brain barrier and enhanced neuroinflammation. The locus ceruleus has connections throughout the brain and spinal cord, so the characteristic widespread multifocal pathology in these disorders could be due to damage to different subsets of locus ceruleus neurons. Previous studies have shown that only certain locus ceruleus neurons accumulate the neurotoxic metal mercury. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0233300PLOS

Morphological, elemental, and boron isotopic insights into pathophysiology of diseased coral growth anomalies.

Sci Rep 2020 May 19;10(1):8252. Epub 2020 May 19.

Grice Marine Laboratory, Department of Biology, College of Charleston, 205 Fort Johnson Rd., Charleston, SC, 29412, USA.

Coral growth anomalies (GAs) are tumor-like lesions that are detrimental to colony fitness and are commonly associated with high human population density, yet little is known about the disease pathology or calcification behavior. SEM imagery, skeletal trace elements and boron isotopes (δB) have been combined as a novel approach to study coral disease. Low Mg/Ca, and high U/Ca, Mo/Ca, and V/Ca potentially suggest a decreased abundance of "centers of calcification" and nitrogen-fixation in GAs. Read More

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http://dx.doi.org/10.1038/s41598-020-65118-6DOI Listing

Understanding Metal Dynamics Between Cancer Cells and Macrophages: Competition or Synergism?

Front Oncol 2020 30;10:646. Epub 2020 Apr 30.

Laboratory of Tumor Inflammation and Angiogenesis, Center for Cancer Biology (CCB), VIB, Leuven, Belgium.

Metal ions, such as selenium, copper, zinc, and iron are naturally present in the environment (air, drinking water, and food) and are vital for cellular functions at chemical, molecular, and biological levels. These trace elements are involved in various biochemical reactions by acting as cofactors for many enzymes and control important biological processes by binding to the receptors and transcription factors. Moreover, they are essential for the stabilization of the cellular structures and for the maintenance of genome stability. Read More

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http://dx.doi.org/10.3389/fonc.2020.00646DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7203474PMC

Monosaccharides and carbon nanosphere obtained by acidic concentrated LiBr treatment of raw crop residues via optimizing the synthesis process.

Bioresour Technol 2020 Aug 11;310:123522. Epub 2020 May 11.

State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China; School of Bioengineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China. Electronic address:

The by-product from acidic concentrated LiBr hydrolyzed (ALBH) crop residues, as ALBH biochar, showed great potential as adsorbent for removing heavy metal pollution. By optimizing the treatment conditions, this study indicated that 22.44% of cellulose was hydrolyzed to glucose, and the residues showed 86. Read More

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http://dx.doi.org/10.1016/j.biortech.2020.123522DOI Listing

Dynamics of major and trace elements during seawater intrusion in a coastal sedimentary aquifer impacted by anthropogenic activities.

J Contam Hydrol 2020 May 5;232:103653. Epub 2020 May 5.

Lesser y Asociados, S.A. de C.V., Queretaro, Mexico.

This study analyzed the dynamics of major ions and trace elements along the groundwater flow path of the coastal sedimentary Todos Santos aquifer in Baja California Sur, Mexico, moderately impacted by anthropogenic activities. The results indicate that the elements Ca, Mg, Ba, Sr and Li are mobilized from the aquifer matrix during seawater intrusion, whereas the alkali-elements Na, K and Rb are removed from solution, possibly due to cationic exchange process. The anions HCO and SO and the elements I and B are mobilized due to carbonate mineral weathering, whereas dissolved silica and the halides Br and F behave conservatively during salinization. Read More

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http://dx.doi.org/10.1016/j.jconhyd.2020.103653DOI Listing

Submarine karstic springs as a source of nutrients and bioactive trace metals for the oligotrophic Northwest Mediterranean Sea.

Sci Total Environ 2020 May 5;732:139106. Epub 2020 May 5.

LEGOS, Laboratoire d'Etudes en Géophysique et Océanographie Spatiales, Université de Toulouse, CNES, CNRS, IRD, UPS, Observatoire Midi Pyrénées, 14 Ave Edouard Belin, 31400 Toulouse, France.

Groundwater springs in karstified carbonate aquifers are known to transport carbon, nutrients and trace elements to the coastal ocean. The biogeochemical significance of submarine karstic springs and their impact on coastal primary production are often difficult to quantify. We investigated several karstic springs, including the first-order Port-Miou spring, in an urbanized watershed that is also severely impacted by sewage effluent (Calanques of Marseille-Cassis, France). Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.139106DOI Listing

Assessment of iron-based and calcium-phosphate nanomaterials for immobilisation of potentially toxic elements in soils from a shooting range berm.

J Environ Manage 2020 Aug 6;267:110640. Epub 2020 May 6.

Department of Plant Biology and Soil Science, Área de Edafoloxía e Química Agrícola, Facultade de Ciencias, Universidade de Vigo, As Lagoas 1, 32004, Ourense, Spain.

Shooting range facilities in military areas have been indicated as a hotspot of land degradation with high contents of Potentially Toxic Elements (PTEs). Currently, based on the new nanomaterials with specific characteristics, nanoremediation technologies are used to immobilise and to reduce the availability of PTEs in field and laboratory conditions. In this study, the effects of nano-hydroxyapatite and/or hematite on PTEs immobilisation (As, Cd, Cu, Pb, Sb and Zn) in military shooting range soils were assessed through the measure of available and leachable forms with three single-extractions: calcium chloride (0. Read More

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http://dx.doi.org/10.1016/j.jenvman.2020.110640DOI Listing

Environmental radioactivity and trace metals in surficial sediments from estuarine systems in Ghana (Equatorial Africa), impacted by artisanal gold-mining.

J Environ Radioact 2020 Jul 31;218:106260. Epub 2020 Mar 31.

Department of Marine and Fisheries Sciences, University of Ghana, Legon, Ghana; Vice Chancellor of the Regional Maritime University, Acra, Ghana.

This paper reports concentrations of γ-emitter radionuclides (K, Cs, Pb, Ra, Ra, Th and Th) and some metals (Al, Cr, Fe, Co, Ni, Cu, Zn, As, Sr, Cd, Sb, Cs, Pb, Th and U) in surficial sediments from the Ankobra, Pra and Volta estuaries, in Ghana. Artisanal gold-mining in the Ankobra and Pra basins promoted moderate enrichments of As, Sb, Cu, Cs and Cr in their estuarine sediments, with respect to the reference background of the Volta Estuary. Radionuclide concentrations were in the range found in the Earth's crust. Read More

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http://dx.doi.org/10.1016/j.jenvrad.2020.106260DOI Listing

Detoxification and immobilization of chromite ore processing residue using the alkali-activated cementitious materials mixed with ascorbic acid.

J Environ Manage 2020 Jul 27;265:110350. Epub 2020 Apr 27.

State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China; College of Resource and Environmental Science, Chongqing University, Chongqing, 400044, China. Electronic address:

The existence of leachable Cr(Ⅵ) in chromite ore processing residue (COPR) makes it hazardous waste. Therefore, resourceful utilization of COPR is necessary to protect the ecosystem and living biota from hazardous effect of Cr(Ⅵ) caused by its leaching. In this study, detoxification and immobilization of COPR was carried out through introduction of ascorbic acid (AA) in alkali-activated cementitious materials. Read More

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http://dx.doi.org/10.1016/j.jenvman.2020.110350DOI Listing

Toxic and essential trace element concentrations in fish species in the Lower Amazon, Brazil.

Sci Total Environ 2020 Apr 30;732:138983. Epub 2020 Apr 30.

Department of Animal Pathology, Veterinary Faculty, Universidade de Santiago de Compostela, 27002 Lugo, Spain.

The Lower Amazon region (Western Pará, northern Brazil) is greatly affected by mining exploitations (particularly artisanal gold mines) and other industrial and intensive agricultural activities with potentially strong impacts on aquatic ecosystems. Although such impacts include contamination with various toxic elements, to date only the effects of Hg have been considered. In this study, toxic and trace element concentrations were determined in the flesh of 351 fish specimens, including detritivores (Acarí, Pterygoplichthys pardalis), omnivores (Piranha, Pygocentrus nattereri; Pirarucu, Arapaima sp. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.138983DOI Listing

Characterization of subsurface media from locations up- and down-gradient of a uranium-contaminated aquifer.

Chemosphere 2020 May 10;255:126951. Epub 2020 May 10.

Oak Ridge National Laboratory, Biosciences Division, Oak Ridge, TN, USA; University of Tennessee, Departments of Earth & Planetary Sciences, Microbiology, Civil & Environmental Engineering, Methane Center, Knoxville, TN, USA. Electronic address:

The processing of sediment to accurately characterize the spatially-resolved depth profiles of geophysical and geochemical properties along with signatures of microbial density and activity remains a challenge especially in complex contaminated areas. This study processed cores from two sediment boreholes from background and contaminated core sediments and surrounding groundwater. Fresh core sediments were compared by depth to capture the changes in sediment structure, sediment minerals, biomass, and pore water geochemistry in terms of major and trace elements including pollutants, cations, anions, and organic acids. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2020.126951DOI Listing

Association of twenty-three plasma elements with fasting serum glucose among Chinese population from four areas with different pollution level.

J Trace Elem Med Biol 2020 May 11;61:126510. Epub 2020 May 11.

Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha, 410078, China. Electronic address:

Background: Association between fasting serum glucose (FSG) and certain mineral elements has been extensively reported. Investigation regarding multi-element exposure among subjects with different exposure level is warranted to confirm the association and further explore dose-dependent relationship.

Methods: A total of 3488 participants were recruited from four counties of Hunan province, South China. Read More

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http://dx.doi.org/10.1016/j.jtemb.2020.126510DOI Listing

Potential bio-indicators for assessment of mineral status in elephants.

Sci Rep 2020 May 15;10(1):8032. Epub 2020 May 15.

Inorganic Geochemistry, Centre for Environmental Geochemistry, British Geological Survey, Nicker Hill, Keyworth, Nottingham, United Kingdom.

The aim of this study was two-fold: (1) identify suitable bio-indicators to assess elemental status in elephants using captive elephant samples, and (2) understand how geochemistry influences mineral intake. Tail hair, toenail, faeces, plasma and urine were collected quarterly from 21 elephants at five UK zoos. All elephant food, soil from enclosure(s), and drinking water were also sampled. Read More

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http://dx.doi.org/10.1038/s41598-020-64780-0DOI Listing

Fluorescent Janus emulsions for biosensing of .

Proc Natl Acad Sci U S A 2020 May 15. Epub 2020 May 15.

Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139;

Here we report a sensing method for based on the agglutination of all-liquid Janus emulsions. This two-dye assay enables the rapid detection of trace in less than 2 h via an emissive signal produced in response to binding. The biorecognition interface between the Janus emulsions is assembled by attaching antibodies to a functional surfactant polymer with a tetrazine/transcyclooctene click reaction. Read More

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http://dx.doi.org/10.1073/pnas.2002623117DOI Listing

Total metal content and chemical speciation analysis of iron, copper, zinc and iodine in human breast milk using high-performance liquid chromatography separation and inductively coupled plasma mass spectrometry detection.

Food Chem 2020 May 6;326:126978. Epub 2020 May 6.

Physical and Analytical Chemistry Department, Faculty of Chemistry, University of Oviedo, Oviedo, Spain.

The aim of this research was to quantify essential trace elements (iron, copper, zinc and iodine) and establish their speciation in human milk. Both the element and the species are important in new-born nutrition. Colostrum, and transitional and mature milks (25) were collected from 18 mothers of pre-term or full-term infants. Read More

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http://dx.doi.org/10.1016/j.foodchem.2020.126978DOI Listing

Associations between source-resolved PM and airway inflammation at urban and rural locations in Beijing.

Environ Int 2020 May 12;139:105635. Epub 2020 May 12.

Department of Anesthesiology, Pain Medicine and Critical Care Medicine, Aviation General Hospital of China Medical University, Beijing, China.

Background: A large number of research studies have explored the health effects of exposure to atmospheric particulate matter. However, limited quantitative evidence has linked specific sources of personal PM directly to adverse health effects. This study was conducted in order to examine the association between airway inflammation and personal exposure to PM mass, components, and sources among two healthy cohorts living in both urban and rural areas of Beijing, China. Read More

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http://dx.doi.org/10.1016/j.envint.2020.105635DOI Listing

Origin identification of migratory pests (European Starling) using geochemical fingerprinting.

PeerJ 2020 4;8:e8962. Epub 2020 May 4.

Earth, Environmental and Geographic Sciences, University of British Columbia, Kelowna, British Columbia, Canada.

The European Starling (Sturnidae: L.) is an invasive bird in North America where it is an agricultural pest. In British Columbia (Canada), the starling population increases in orchards and vineyards in autumn, where they consume and damage ripening fruits. Read More

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http://dx.doi.org/10.7717/peerj.8962DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7204882PMC

Flux estimation, temporal trends and source determination of trace metal contamination in a major tributary of the Seine estuary, France.

Sci Total Environ 2020 Jul 28;724:138249. Epub 2020 Mar 28.

Normandie Univ, Rouen, UMR CNRS, 6014 COBRA, 55 Rue Saint Germain, 27000 Evreux, France.

Anthropogenic impacts on rivers have increased significantly over the past ~150 years, particularly at the beginning of the industrial revolution. Among other signs, this impact is manifested through the addition of trace metals and metalloid elements to rivers. The Eure River watershed in France covers an area of 6017 km and is a major tributary of the Seine estuary. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.138249DOI Listing

Screening of Chinese mustard (Brassica juncea L.) cultivars for the phytoremediation of Cd and Zn based on the plant physiological mechanisms.

Environ Pollut 2020 Jun 22;261:114213. Epub 2020 Feb 22.

College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China. Electronic address:

Brassica juncea L. is an attractive species in PTMs contaminated soil remediation ascribing to its high tolerance under stress and great accumulation capacity of metals. To identify the potential Cd/Zn accumulators from numerous different Chinese mustard cultivars for practical phytoremediation is a promising strategy in China. Read More

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http://dx.doi.org/10.1016/j.envpol.2020.114213DOI Listing

Analysis of free aniline in chrome-free leather accelerated aging.

Spectrochim Acta A Mol Biomol Spectrosc 2020 Apr 23;238:118402. Epub 2020 Apr 23.

The National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China. Electronic address:

Under acidic conditions, aniline can react with nitrite diazotization, then diazotization can reaction products under the condition of alkaline naphthol coupled with armor and color. The product of this reaction has a maximum absorption at 495 nm. By using a series of optimized experiments, we obtained the optimum instrument operation parameters and reaction conditions to analyze aniline in leather extract solutions. Read More

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http://dx.doi.org/10.1016/j.saa.2020.118402DOI Listing

Method validation for a multi-element panel in serum by inductively coupled plasma mass spectrometry (ICP-MS).

Clin Biochem 2020 May 11. Epub 2020 May 11.

ARUP Laboratories, Salt Lake City, UT, United States.

Background: Laboratory testing for trace and toxic elements is important to diagnose metal toxicity and nutritional deficiency. There are several essential elements that are necessary for biological function and non-essential elements that can pose risk from exposure. Both essential and nonessential elements can be toxic if concentrations exceed a certain threshold. Read More

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http://dx.doi.org/10.1016/j.clinbiochem.2020.05.002DOI Listing

Chronic Use of Long-Acting Somatostatin Analogues (SSAs) and Exocrine Pancreatic Insufficiency (EPI) in Patients with Gastroenteropancreatic Neuroendocrine Tumors (GEP-NETs): An Under-recognized Adverse Effect.

Cancer Med J 2020 27;3(2):75-84. Epub 2020 Apr 27.

Tufts Medical Center, Boston, MA, USA.

Background: Somatostatin Analogues (SSAs) are used to treat Gastroenteropancreatic neuroendocrine tumors (GEP-NETs) and acromegaly. Side effects of SAAs usually include biliary disorders, gastrointestinal disorders, injection-site pain and hyperglycemia. Exocrine Pancreatic Insufficiency (EPI) is often misdiagnosed as disease progression or failure to SAAs or diagnosed after a delay in patients receiving SAAs. Read More

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7219785PMC

Environmental risk of trace elements in mangrove ecosystems: An assessment of natural vs oil and urban inputs.

Sci Total Environ 2020 May 4;730:138643. Epub 2020 May 4.

Unidad Academica de Ecología y Biodiversidad Acuática, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, 04510, México.

The petrochemical industry and urban activities are widely recognized worldwide as a source of pollution to mangrove environments. They can supply pollutants such as trace elements that can modify the ecosystem structure and associated services, as well as human populations. Through geochemical data, multivariate statistical analysis and pollution indices such as the enrichment factor (EF), geo-accumulation index (Igeo), adverse effect index (AEI) and the pollution load index (PLI), we evaluated the factors that control trace element distribution, punctual sources and determined the pollution level of sediments and their potential biological impact in the mangrove ecosystem of Isla del Carmen, Mexico. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.138643DOI Listing

Serum Levels of Selenium, Zinc, Copper, Manganese, and Iron in Prostate Cancer Patients.

Curr Urol 2020 Mar 20;14(1):44-49. Epub 2020 Mar 20.

Department of Surgery, Faculty of Medicine, Umm Al-Qura University, Mecca, Saudi Arabia.

Backgrounds: Variations of trace element contents may be associated with several diseases including metabolic disorders, cellular growth disturbance, mutation and tumorigenesis. Prostate cancer is the second most common male cancer worldwide and stand fifth most common male cancer in Saudi Arabia.

Objective: In the present study, Serum levels of selenium, zinc, copper, manganese, and iron were measured in patients with BPH and prostate cancer aiming to explore the association between these elements and prostate cancer. Read More

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http://dx.doi.org/10.1159/000499261DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7206590PMC