1
|
Nazir R, Soleja N, Agrawal N, Siddiqi TO, Mohsin M. A ratiometric fluorescent probe based on FRET for selective monitoring of tungsten in living cells. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
2
|
Sachdeva S, Maret W. Comparative outcomes of exposing human liver and kidney cell lines to tungstate and molybdate. Toxicol Mech Methods 2021; 31:690-698. [PMID: 34320920 DOI: 10.1080/15376516.2021.1956031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Tungsten has no known function in humans and is a relatively new contaminant, whereas molybdenum, its congener in the periodic table, is a nutritionally essential element. In addition to early studies on molybdosis in ruminants, their toxic effects in the form of tungstate and molybdate have been addressed primarily in rodents and are predominantly mediated by inducing oxidative stress in various tissues. The purpose of this study was to evaluate the differences between tungstate and molybdate in human liver (HepG2) and kidney (HEK293) cell lines in terms of retention in cells, effect on reactive oxygen species, and activities of xanthine oxidase and phosphatases. The cell lines were exposed to tungstate or molybdate (1 µM to 10 mM) for 24 h, lysed and analyzed for the above biochemical parameters. Despite the chemical similarity of the two anions, cell-specific differential effects were observed. At all concentrations, tungstate was retained more in HEK293 cells while molybdate was retained more in HepG2 cells. HepG2 cells were more sensitive to tungstate than molybdate, showing reduced viability at concentrations as low as 10 µM. Exposure to either anion resulted in the inhibition of protein tyrosine phosphatases at 1 mM and an increased production of reactive oxygen species (ROS) at 100 µM despite their inhibition of the ROS-producing molybdenum enzyme xanthine oxidase. In conclusion, the results indicate that excess of nutritionally essential molybdate or non-essential tungstate causes toxicity by affecting ROS- and phosphorylation-dependent signaling pathways and ensuing gene expression.
Collapse
Affiliation(s)
- Sherry Sachdeva
- Division of Regulatory Toxicology, Defence Research Development Establishment, Gwalior, India
| | - Wolfgang Maret
- Department of Nutritional Sciences, Faculty of Life Sciences and Medicine, School of Life Course Sciences, King's College London, London, UK
| |
Collapse
|
3
|
Abstract
The increasing use of tungsten in the production of green energy in the aerospace and military industries, and in many other hi-tech applications, may increase the content of this element in soil. This overview examines some aspects of the behavior of tungsten in soil, such as the importance of characteristics of soils in relation to bioavailability processes, the chemical approaches to evaluate tungsten mobility in the soil environment and the importance of adsorption and desorption processes. Tungsten behavior depends on soil properties of which the most important is soil pH, which determines the solubility and polymerization of tungstate ions and the characteristics of the adsorbing soil surfaces. During the adsorption and desorption of tungsten, iron, and aluminum oxides, and hydroxides play a key role as they are the most important adsorbing surfaces for tungsten. The behavior of tungsten compounds in the soil determines the transfer of this element in plants and therefore in the food chain. Despite the growing importance of tungsten in everyday life, environmental regulations concerning soil do not take this element into consideration. The purpose of this review is also to provide some basic information that could be useful when considering tungsten in environmental legislation.
Collapse
|
4
|
George I, Uboldi C, Bernard E, Sobrido MS, Dine S, Hagège A, Vrel D, Herlin N, Rose J, Orsière T, Grisolia C, Rousseau B, Malard V. Toxicological Assessment of ITER-Like Tungsten Nanoparticles Using an In Vitro 3D Human Airway Epithelium Model. NANOMATERIALS 2019; 9:nano9101374. [PMID: 31557883 PMCID: PMC6836029 DOI: 10.3390/nano9101374] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 09/11/2019] [Accepted: 09/18/2019] [Indexed: 01/08/2023]
Abstract
The International Thermonuclear Experimental Reactor (ITER) is an international project aimed at the production of carbon-free energy through the use of thermonuclear fusion. During ITER operation, in case of a loss-of-vacuum-accident, tungsten nanoparticles (W-NPs) could potentially be released into the environment and induce occupational exposure via inhalation. W-NPs toxicity was evaluated on MucilAir™, a 3D in vitro cell model of the human airway epithelium. MucilAir™ was exposed for 24 h to metallic ITER-like milled W-NPs, tungstate (WO42−) and tungsten carbide cobalt particles alloy (WC-Co). Cytotoxicity and its reversibility were assessed using a kinetic mode up to 28 days after exposure. Epithelial tightness, metabolic activity and interleukin-8 release were also evaluated. Electron microscopy was performed to determine any morphological modification, while mass spectrometry allowed the quantification of W-NPs internalization and of W transfer through the MucilAir™. Our results underlined a decrease in barrier integrity, no effect on metabolic activity or cell viability and a transient increase in IL-8 secretion after exposure to ITER-like milled W-NPs. These effects were associated with W-transfer through the epithelium, but not with intracellular accumulation. We have shown that, under our experimental conditions, ITER-like milled W-NPs have a minor impact on the MucilAir™ in vitro model.
Collapse
Affiliation(s)
- Isabelle George
- CEA, SCBM, Université Paris Saclay, 91191 Gif-sur-Yvette, France.
| | - Chiara Uboldi
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, 13005 Marseille, France.
| | | | - Marcos Sanles Sobrido
- CNRS, Aix Marseille Univ, IRD, INRA, Coll France, CEREGE, 13545, Aix en Provence, France.
| | - Sarah Dine
- Université Paris 13, Sorbonne Paris Cité; Laboratoire des Sciences des Procédés et des Matériaux, UPR 3407-CNRS, 99 avenue J.-B. Clément 93430 Villetaneuse, France.
| | - Agnès Hagège
- Université de Lyon, CNRS, Université Claude Bernard Lyon I, Institute of Analytical Sciences (ISA), UMR 5280, 5, rue de la Doua, 69100 Villeurbanne, France.
| | - Dominique Vrel
- Université Paris 13, Sorbonne Paris Cité; Laboratoire des Sciences des Procédés et des Matériaux, UPR 3407-CNRS, 99 avenue J.-B. Clément 93430 Villetaneuse, France.
| | - Nathalie Herlin
- NIMBE, IRAMIS, Université Paris Saclay, 91191 Gif sur Yvette CEDEX, France.
| | - Jerome Rose
- CNRS, Aix Marseille Univ, IRD, INRA, Coll France, CEREGE, 13545, Aix en Provence, France.
| | - Thierry Orsière
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, 13005 Marseille, France.
| | | | - Bernard Rousseau
- CEA, SCBM, Université Paris Saclay, 91191 Gif-sur-Yvette, France.
| | - Véronique Malard
- Aix Marseille Univ, CEA, CNRS, BIAM, UMR7265, EIPM, F-13108 Saint Paul-Lez-Durance, France.
| |
Collapse
|
5
|
Preiner J, Wienkoop S, Weckwerth W, Oburger E. Molecular Mechanisms of Tungsten Toxicity Differ for Glycine max Depending on Nitrogen Regime. FRONTIERS IN PLANT SCIENCE 2019; 10:367. [PMID: 31001297 PMCID: PMC6454624 DOI: 10.3389/fpls.2019.00367] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 03/08/2019] [Indexed: 05/06/2023]
Abstract
Tungsten (W) finds increasing application in military, aviation and household appliance industry, opening new paths into the environment. Since W shares certain chemical properties with the essential plant micronutrient molybdenum (Mo), it is proposed to inhibit enzymatic activity of molybdoenzymes [e.g., nitrate reductase (NR)] by replacing the Mo-ion bound to the co-factor. Recent studies suggest that W, much like other heavy metals, also exerts toxicity on its own. To create a comprehensive picture of tungsten stress, this study investigated the effects of W on growth and metabolism of soybean (Glycine max), depending on plant nitrogen regime [nitrate fed (N fed) vs. symbiotic N2 fixation (N fix)] by combining plant physiological data (biomass production, starch and nutrient content, N2 fixation, nitrate reductase activity) with root and nodule proteome data. Irrespective of N regime, NR activity and total N decreased with increasing W concentrations. Nodulation and therefore also N2 fixation strongly declined at high W concentrations, particularly in N fix plants. However, N2 fixation rate (g N fixed g-1 nodule dwt) remained unaffected by increasing W concentrations. Proteomic analysis revealed a strong decline in leghemoglobin and nitrogenase precursor levels (NifD), as well as an increase in abundance of proteins involved in secondary metabolism in N fix nodules. Taken together this indicates that, in contrast to the reported direct inhibition of NR, N2 fixation appears to be indirectly inhibited by a decrease in nitrogenase synthesis due to W induced changes in nodule oxygen levels of N fix plants. Besides N metabolism, plants exhibited a strong reduction of shoot (both N regimes) and root (N fed only) biomass, an imbalance in nutrient levels and a failure of carbon metabolic pathways accompanied by an accumulation of starch at high tungsten concentrations, independent of N-regime. Proteomic data (available via ProteomeXchange with identifier PXD010877) demonstrated that the response to high W concentrations was independent of nodule functionality and dominated by several peroxidases and other general stress related proteins. Based on an evaluation of several W responsive proteotypic peptides, we identified a set of protein markers of W stress and possible targets for improved stress tolerance.
Collapse
Affiliation(s)
- Julian Preiner
- Division of Molecular Systems Biology, Department of Ecogenomics and Systems Biology, University of Vienna, Vienna, Austria
- Department of Forest and Soil Sciences, Institute of Soil Research, University of Natural Resources and Life Sciences Vienna, Tulln, Austria
| | - Stefanie Wienkoop
- Division of Molecular Systems Biology, Department of Ecogenomics and Systems Biology, University of Vienna, Vienna, Austria
| | - Wolfram Weckwerth
- Division of Molecular Systems Biology, Department of Ecogenomics and Systems Biology, University of Vienna, Vienna, Austria
| | - Eva Oburger
- Department of Forest and Soil Sciences, Institute of Soil Research, University of Natural Resources and Life Sciences Vienna, Tulln, Austria
- Division of Terrestrial Ecosystem Research, Department of Microbiology and Ecosystem Science, University of Vienna, Vienna, Austria
| |
Collapse
|
6
|
Ribeiro MJ, Maria VL, Soares AMVM, Scott-Fordsmand JJ, Amorim MJB. Fate and Effect of Nano Tungsten Carbide Cobalt (WCCo) in the Soil Environment: Observing a Nanoparticle Specific Toxicity in Enchytraeus crypticus. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:11394-11401. [PMID: 30193070 DOI: 10.1021/acs.est.8b02537] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Tungsten carbide cobalt (WCCo) nanoparticles (NPs) are widely used in hard metal industries. Pulmonary diseases and risk of cancer are associated with occupational exposure, but knowledge about the environmental fate and effects is virtually absent. In this study, the fate and effects of crystalline WCCo NPs, WC, and Co2+ were assessed in the soil model Enchytraeus crypticus, following the standard Enchytraeid Reproduction Test (ERT). An additional 28 day exposure period compared to the ERT (i.e., a total of 56 days) was performed to assess longer-term effects. WCCo NPs affected reproduction at a concentration higher than the corresponding Co based (EC50 = 1500 mg WCCo/kg, equivalent to 128 mg Co/kg). WC showed no negative effect up to 1000 mg W/kg. Maximum uptake of Co was 10-fold higher for CoCl2 compared to WCCo exposed organisms. Overall toxicity seems to be due to a combined effect between WC and Co. This is supported by the soil bioavailable fraction and biological tissue measurements. Last, results highlight the need to consider longer exposure period of NPs for comparable methods standardized for conventional chemicals.
Collapse
Affiliation(s)
- Maria J Ribeiro
- Department of Biology and CESAM , University of Aveiro , 3810-193 Aveiro , Portugal
| | - Vera L Maria
- Department of Biology and CESAM , University of Aveiro , 3810-193 Aveiro , Portugal
| | - Amadeu M V M Soares
- Department of Biology and CESAM , University of Aveiro , 3810-193 Aveiro , Portugal
| | - Janeck J Scott-Fordsmand
- Department of Bioscience , Aarhus University , Vejlsovej 25 , PO BOX 314, DK-8600 Silkeborg , Denmark
| | - Mónica J B Amorim
- Department of Biology and CESAM , University of Aveiro , 3810-193 Aveiro , Portugal
| |
Collapse
|
7
|
Abstract
PURPOSE OF REVIEW Tungsten is an emerging environmental toxicant, yet our understanding of the potential risks of exposure on human health is still limited. RECENT FINDINGS In this review, we will discuss populations most at risk of exposure to high concentrations of tungsten. In addition, we will highlight what is known about the toxicity profile of tungsten compounds, based on epidemiological, in vitro, and in vivo studies, focusing on bone, immune, pulmonary, and cancer outcomes. Of note, emerging evidence indicates that tungsten can augment the effects of other stimulants, stressors, and toxicants. Of particular importance may be tungsten-cobalt mixtures that seem to be more toxic than either metal alone. This is important because it means that we cannot just evaluate the toxicity of tungsten in isolation. Finally, we still have limited information of how many of the in vitro and in vivo findings translate to human populations, so it will be important to conduct epidemiology studies in highly exposed populations to adequately address the potential risks of tungsten exposure on human health. Together, we discuss recent findings that support further investigation into the toxicities of tungsten alone and in combination with other metals.
Collapse
|
8
|
Bolt AM, Grant MP, Wu TH, Flores Molina M, Plourde D, Kelly ADR, Negro Silva LF, Lemaire M, Schlezinger JJ, Mwale F, Mann KK. Tungsten Promotes Sex-Specific Adipogenesis in the Bone by Altering Differentiation of Bone Marrow-Resident Mesenchymal Stromal Cells. Toxicol Sci 2016; 150:333-46. [PMID: 26865663 DOI: 10.1093/toxsci/kfw008] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Tungsten is a naturally occurring metal that increasingly is being incorporated into industrial goods and medical devices, and is recognized as an emerging contaminant. Tungsten preferentially and rapidly accumulates in murine bone in a concentration-dependent manner; however the effect of tungsten deposition on bone biology is unknown. Other metals alter bone homeostasis by targeting bone marrow-derived mesenchymal stromal cell (MSC) differentiation, thus, we investigated the effects of tungsten on MSCsin vitroandin vivoIn vitro, tungsten shifted the balance of MSC differentiation by enhancing rosiglitazone-induced adipogenesis, which correlated with an increase in adipocyte content in the bone of tungsten-exposed, young, male mice. Conversely, tungsten inhibited osteogenesis of MSCsin vitro; however, we found no evidence that tungsten inhibited osteogenesisin vivo Interestingly, two factors known to influence adipogenesis are sex and age of mice. Both female and older mice have enhanced adipogenesis. We extended our study and exposed young female and adult (9-month) male and female mice to tungsten for 4 weeks. Although tungsten accumulated to a similar extent in young female mice, it did not promote adipogenesis. Interestingly, tungsten did not accumulate in the bone of older mice; it was undetectable in adult male mice, and just above the limit of detect in adult female mice. Surprisingly, tungsten enhanced adipogenesis in adult female mice. In summary, we found that tungsten alters bone homeostasis by altering differentiation of MSCs, which could have significant implications for bone quality, but is highly dependent upon sex and age.
Collapse
Affiliation(s)
- Alicia M Bolt
- *Lady Davis Institute for Medical Research; Department of Oncology
| | | | - Ting Hua Wu
- *Lady Davis Institute for Medical Research; Division of Experimental Medicine
| | | | | | | | | | - Maryse Lemaire
- *Lady Davis Institute for Medical Research; Department of Oncology
| | - Jennifer J Schlezinger
- Department of Environmental Health, Boston University School of Public Health, Boston, Massachusetts, USA
| | - Fackson Mwale
- *Lady Davis Institute for Medical Research; Faculty of Medicine; Department of Surgery, McGill University, Montréal, Québec, Canada; and
| | - Koren K Mann
- *Lady Davis Institute for Medical Research; Department of Oncology; Division of Experimental Medicine;
| |
Collapse
|
9
|
Sachdeva S, Pant SC, Kushwaha P, Bhargava R, Flora SJ. Sodium tungstate induced neurological alterations in rat brain regions and their response to antioxidants. Food Chem Toxicol 2015; 82:64-71. [DOI: 10.1016/j.fct.2015.05.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Revised: 05/06/2015] [Accepted: 05/07/2015] [Indexed: 01/01/2023]
|
10
|
Lemus R, Venezia CF. An update to the toxicological profile for water-soluble and sparingly soluble tungsten substances. Crit Rev Toxicol 2015; 45:388-411. [PMID: 25695728 PMCID: PMC4732414 DOI: 10.3109/10408444.2014.1003422] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 12/28/2014] [Indexed: 12/08/2022]
Abstract
Tungsten is a relatively rare metal with numerous applications, most notably in machine tools, catalysts, and superalloys. In 2003, tungsten was nominated for study under the National Toxicology Program, and in 2011, it was nominated for human health assessment under the US Environmental Protection Agency's (EPA) Integrated Risk Information System. In 2005, the Agency for Toxic Substances and Disease Registry (ATSDR) issued a toxicological profile for tungsten, identifying several data gaps in the hazard assessment of tungsten. By filling the data gaps identified by the ATSDR, this review serves as an update to the toxicological profile for tungsten and tungsten substances. A PubMed literature search was conducted to identify reports published during the period 2004-2014, in order to gather relevant information related to tungsten toxicity. Additional information was also obtained directly from unpublished studies from within the tungsten industry. A systematic approach to evaluate the quality of data was conducted according to published criteria. This comprehensive review has gathered new toxicokinetic information and summarizes the details of acute and repeated-exposure studies that include reproductive, developmental, neurotoxicological, and immunotoxicological endpoints. Such new evidence involves several relevant studies that must be considered when regulators estimate and propose a tungsten reference or concentration dose.
Collapse
Affiliation(s)
- Ranulfo Lemus
- International Tungsten Industry Association (ITIA), London, UK
| | | |
Collapse
|
11
|
Sachdeva S, Flora SJS. Efficacy of some antioxidants supplementation in reducing oxidative stress post sodium tungstate exposure in male wistar rats. J Trace Elem Med Biol 2014; 28:233-239. [PMID: 24613855 DOI: 10.1016/j.jtemb.2014.01.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Revised: 01/06/2014] [Accepted: 01/28/2014] [Indexed: 11/24/2022]
Abstract
This study aimed to evaluate the protective efficacy of some antioxidants against sodium tungstate induced oxidative stress in male wistar rats. Animals were sub-chronically exposed to sodium tungstate (100ppm in drinking water) for three months except for control group. In the same time, many rats were supplemented orally with different antioxidants (alpha-lipoic acid (ALA), n-acetylcysteine (NAC), quercetin or naringenin (0.30mM)) for five consecutive days a week for the same mentioned period before. Exposure to sodium tungstate significantly (P<0.05) inhibit blood δ-aminolevulinic acid dehydratase (ALAD) activity, liver and blood reduced glutathione (GSH) levels and an increase in oxidized glutathione (GSSG) and thiobarbituric acid reactive species (TBARS) levels in tissues. ALA acid and NAC supplementation post sodium tungstate exposure increased GSH and also, was beneficial in the recovery of altered superoxide dismutase and catalase activity, besides, significantly reducing blood and tissue reactive oxygen species and TBARS levels. The results suggest a more pronounced efficacy of ALA acid and NAC supplementation than quercetin or naringenin supplementation post sodium tungstate exposure in preventing induced oxidative stress in rats.
Collapse
Affiliation(s)
- S Sachdeva
- Division of Regulatory Toxicology, Defence Research and Development Establishment, Jhansi Road, Gwalior 474 002, India
| | - S J S Flora
- Division of Regulatory Toxicology, Defence Research and Development Establishment, Jhansi Road, Gwalior 474 002, India.
| |
Collapse
|
12
|
1H NMR spectroscopic analysis detects metabolic disturbances in rat urine on acute exposure to heavy metal tungsten alloy based metals salt. Chem Biol Interact 2014; 211:20-8. [DOI: 10.1016/j.cbi.2013.12.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 12/13/2013] [Accepted: 12/30/2013] [Indexed: 02/02/2023]
|
13
|
Tyrrell J, Galloway TS, Abo-Zaid G, Melzer D, Depledge MH, Osborne NJ. High urinary tungsten concentration is associated with stroke in the National Health and Nutrition Examination Survey 1999-2010. PLoS One 2013; 8:e77546. [PMID: 24244278 PMCID: PMC3823878 DOI: 10.1371/journal.pone.0077546] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Accepted: 09/09/2013] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND In recent years there has been an exponential increase in tungsten demand, potentially increasing human exposure to the metal. Currently, the toxicology of tungsten is poorly understood, but mounting evidence suggests that both the elemental metal and its alloys have cytotoxic effects. Here, we investigate the association between tungsten and cardiovascular disease (CVD) or stroke using six waves of the National Health and Nutrition Examination Survey (NHANES). METHODS We investigated associations using crude and adjusted logistic regression models in a cohort of 8614 adults (18-74 years) with 193 reported stroke diagnoses and 428 reported diagnoses of CVD. We also stratified our data to characterize associations in a subset of younger individuals (18-50 years). RESULTS Elevated tungsten concentrations were strongly associated with an increase in the prevalence of stroke, independent of typical risk factors (Odds Ratio (OR): 1.66, 95% Confidence Interval (95% CI): 1.17, 2.34). The association between tungsten and stroke in the young age category was still evident (OR: 2.17, 95% CI: 1.33, 3.53). CONCLUSION This study represents the most comprehensive analysis of the human health effects of tungsten to date. Individuals with higher urinary tungsten concentrations have double the odds of reported stroke. We hypothesize that the pathological pathway resulting from tungsten exposure may involve oxidative stress.
Collapse
Affiliation(s)
- Jessica Tyrrell
- European Centre for Environment and Human Health, University of Exeter Medical School, Truro, United Kingdom
| | - Tamara S. Galloway
- College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom
| | - Ghada Abo-Zaid
- European Centre for Environment and Human Health, University of Exeter Medical School, Truro, United Kingdom
| | - David Melzer
- Epidemiology and Public Health, University of Exeter Medical School, Exeter, United Kingdom
| | - Michael H. Depledge
- European Centre for Environment and Human Health, University of Exeter Medical School, Truro, United Kingdom
| | - Nicholas J. Osborne
- European Centre for Environment and Human Health, University of Exeter Medical School, Truro, United Kingdom
- * E-mail:
| |
Collapse
|
14
|
Osterburg AR, Robinson CT, Mokashi V, Stockelman M, Schwemberger SJ, Chapman G, Babcock GF. Oral tungstate (Na2WO4) exposure reduces adaptive immune responses in mice after challenge. J Immunotoxicol 2013; 11:148-59. [DOI: 10.3109/1547691x.2013.816394] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
15
|
Adamakis IDS, Panteris E, Eleftheriou EP. Tungsten Toxicity in Plants. PLANTS (BASEL, SWITZERLAND) 2012; 1:82-99. [PMID: 27137642 PMCID: PMC4844263 DOI: 10.3390/plants1020082] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2012] [Revised: 11/09/2012] [Accepted: 11/13/2012] [Indexed: 11/17/2022]
Abstract
Tungsten (W) is a rare heavy metal, widely used in a range of industrial, military and household applications due to its unique physical properties. These activities inevitably have accounted for local W accumulation at high concentrations, raising concerns about its effects for living organisms. In plants, W has primarily been used as an inhibitor of the molybdoenzymes, since it antagonizes molybdenum (Mo) for the Mo-cofactor (MoCo) of these enzymes. However, recent advances indicate that, beyond Mo-enzyme inhibition, W has toxic attributes similar with those of other heavy metals. These include hindering of seedling growth, reduction of root and shoot biomass, ultrastructural malformations of cell components, aberration of cell cycle, disruption of the cytoskeleton and deregulation of gene expression related with programmed cell death (PCD). In this article, the recent available information on W toxicity in plants and plant cells is reviewed, and the knowledge gaps and the most pertinent research directions are outlined.
Collapse
Affiliation(s)
| | - Emmanuel Panteris
- Department of Botany, School of Biology, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece.
| | - Eleftherios P Eleftheriou
- Department of Botany, School of Biology, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece.
| |
Collapse
|
16
|
Kühnel D, Scheffler K, Wellner P, Meißner T, Potthoff A, Busch W, Springer A, Schirmer K. Comparative evaluation of particle properties, formation of reactive oxygen species and genotoxic potential of tungsten carbide based nanoparticles in vitro. JOURNAL OF HAZARDOUS MATERIALS 2012; 227-228:418-26. [PMID: 22698683 DOI: 10.1016/j.jhazmat.2012.04.070] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Revised: 04/27/2012] [Accepted: 04/29/2012] [Indexed: 05/25/2023]
Abstract
Tungsten carbide (WC) and cobalt (Co) are constituents of hard metals and are used for the production of extremely hard tools. Previous studies have identified greater cytotoxic potential of WC-based nanoparticles if particles contained Co. The aim of this study was to investigate whether the formation of reactive oxygen species (ROS) and micronuclei would help explain the impact on cultured mammalian cells by three different tungsten-based nanoparticles (WC(S), WC(L), WC(L)-Co (S: small; L: large)). The selection of particles allowed us to study the influence of particle properties, e.g. surface area, and the presence of Co on the toxicological results. WC(S) and WC(L)/WC(L)-Co differed in their crystalline structure and surface area, whereas WC(S)/WC(L) and WC(L)-Co differed in their cobalt content. WC(L) and WC(L)-Co showed neither a genotoxic potential nor ROS induction. Contrary to that, WC(S) nanoparticles induced the formation of both ROS and micronuclei. CoCl(2) was tested in relevant concentrations and induced no ROS formation, but increased the rate of micronuclei at concentrations exceeding those present in WC(L)-Co. In conclusion, ROS and micronuclei formation could not be associated with the presence of Co in the WC-based particles. The contrasting responses elicited by WC(S) vs. WC(L) appear to be due to large differences in crystalline structure.
Collapse
Affiliation(s)
- Dana Kühnel
- Department of Bioanalytical Ecotoxicology, Helmholtz-Centre for Environmental Research Leipzig-UFZ, Leipzig, Germany.
| | | | | | | | | | | | | | | |
Collapse
|
17
|
Verma R, Xu X, Jaiswal MK, Olsen C, Mears D, Caretti G, Galdzicki Z. In vitro profiling of epigenetic modifications underlying heavy metal toxicity of tungsten-alloy and its components. Toxicol Appl Pharmacol 2011; 253:178-87. [DOI: 10.1016/j.taap.2011.04.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2011] [Revised: 03/29/2011] [Accepted: 04/04/2011] [Indexed: 01/04/2023]
|