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Bierla K, Szpunar J, Lobinski R, Sunde RA. Selenomethionine supplementation and expression of selenosugars, selenocysteine, and other selenometabolites in rat liver. Metallomics 2023; 15:mfad067. [PMID: 37898557 DOI: 10.1093/mtomcs/mfad067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 10/27/2023] [Indexed: 10/30/2023]
Abstract
Selenomethionine (SeMet) as a methionine analog can be incorporated into protein. In turkeys, we recently found that selenium (Se) as selenite is not metabolized to SeMet but rather to selenosugars (seleno-N-acetyl galactosamine) bound to protein as well as to selenocysteine (Sec) in selenoproteins. To characterize the metabolism of SeMet, we fed rats graded levels of SeMet from 0 to 5 µg Se/g in a Se-deficient diet for 4 wk, and investigated the fate and accumulation of liver Se using high pressure liquid chromatography (HPLC) coupled with Se-specific inductively coupled plasma mass spectrometry (ICP-MS) and molecule specific (Orbitrap MS/MS) detection. Up to 0.24 µg Se/g (Se requirement for maximal glutathione peroxidase activity), Sec accounted for ∼40% of total liver Se whereas SeMet only accounted for 3-11%. Analysis of water-soluble extracts found negligible low molecular weight (LMW) Se species in rats fed 0 and 0.08 µg Se/g, including no SeMet. At 0.24 µg Se/g and above, SeMet accounted for only 10% of LMW Se species, whereas methyl- and glutathionyl-selenosugars accounted for 70% of LMW Se species. Above the Se requirement, SeMet was ∼30% of the proteinaceous amino acids, whereas Sec levels fell to 5% in rats fed 5 µg Se/g as SeMet. Last, considerably less inorganic Se was bound to liver protein with high SeMet as compared to selenite in a parallel study. SeMet is efficiently metabolized and mixes with the common Se metabolite pool, where Se is preferentially incorporated into Sec and Sec-selenoproteins until selenoproteins plateau; with high SeMet intake, Se is increasingly accumulated as LMW selenosugars and as selenosugar-decorated proteins.
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Affiliation(s)
- Katarzyna Bierla
- Universite de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM UMR 5254, Helioparc, 64053 Pau, France
| | - Joanna Szpunar
- Universite de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM UMR 5254, Helioparc, 64053 Pau, France
| | - Ryszard Lobinski
- Universite de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM UMR 5254, Helioparc, 64053 Pau, France
- Chair of Analytical Chemistry, Faculty of Chemistry, Warsaw University of Technology, ul. Noakowskiego 3, 00-664 Warsaw, Poland
| | - Roger A Sunde
- Department of Nutritional Sciences, University of Wisconsin, Madison, WI 53706, USA
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Bierla K, Szpunar J, Lobinski R, Sunde RA. Effect of graded levels of selenium supplementation as selenite on expression of selenosugars, selenocysteine, and other selenometabolites in rat liver. Metallomics 2023; 15:mfad066. [PMID: 37898555 DOI: 10.1093/mtomcs/mfad066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 10/27/2023] [Indexed: 10/30/2023]
Abstract
Using high pressure liquid chromatography (HPLC) coupled with selenium-specific inductively coupled plasma mass spectrometry (ICP-MS) and molecule specific (Orbitrap MS/MS) detection, we previously found that far more selenium (Se) is present as selenosugar (seleno-N-acetyl galactosamine) in Se-adequate turkey liver than is present as selenocysteine (Sec) in true selenoproteins, and that selenosugars account for half of the Se in high-Se turkey liver. To expand these observations to mammals, we studied Se metabolism in rats fed graded levels of selenite from 0 to 5 μg Se/g for 4 wk. In Se-adequate (0.24 μg Se/g) rats, 43% of liver Se was present as Sec, 32% was present as selenosugars, and 22% as inorganic Se bound to protein. In liver of rats fed 5 μg Se/g as selenite, the quantity of Sec remained at the Se-adequate plateau (11% of total Se), 22% was present as low molecular weight (LMW) selenosugars with substantial additional selenosugars linked to protein, but 64% was present as inorganic Se bound to protein. No selenomethionine was found at any level of selenite supplementation. Below the Se requirement, Se is preferentially incorporated into Sec-selenoproteins. Above the dietary Se requirement, selenosugars become by far the major LMW water soluble Se species in liver, and levels of selenosugar-decorated proteins are far higher than Sec-selenoproteins, making these selenosugar-decorated proteins the major Se-containing protein species in liver with high Se supplementation. This accumulation of selenosugars linked to cysteines on proteins or the build-up of inorganic Se bound to protein may underlie Se toxicity at the molecular level.
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Affiliation(s)
- Katarzyna Bierla
- Universite de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM UMR 5254, Helioparc, 64053 Pau, France
| | - Joanna Szpunar
- Universite de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM UMR 5254, Helioparc, 64053 Pau, France
| | - Ryszard Lobinski
- Universite de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM UMR 5254, Helioparc, 64053 Pau, France
- Chair of Analytical Chemistry, Faculty of Chemistry, Warsaw University of Technology, ul. Noakowskiego 3, 00-664 Warsaw, Poland
| | - Roger A Sunde
- Department of Nutritional Sciences, University of Wisconsin, Madison, WI 53706, USA
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Riisom M, Jamieson SMF, Hartinger CG. Critical evaluation of cell lysis methods for metallodrug studies in cancer cells. Metallomics 2023; 15:mfad048. [PMID: 37596065 DOI: 10.1093/mtomcs/mfad048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 08/01/2023] [Indexed: 08/20/2023]
Abstract
Intracellular accumulation studies are a key step in metallodrug development but often variable results are obtained. Therefore, we aimed here to investigate different protocols for efficient and reproducible lysis of cancer cells in terms of protein content in lysates and in cell uptake studies of the Ru anticancer complex [chlorido(8-oxyquinolinato)(η6-p-cymene)ruthenium(II)] ([Ru(cym)(HQ)Cl]). The physical lysis methods osmosis and sonication were chosen for comparison with chemical lysis with the radioimmunoprecipitation assay (RIPA) buffer. Based on the protein content and the total Ru accumulated in the lysates, the latter determined using inductively coupled plasma-mass spectrometry, RIPA buffer was the most efficient lysis method. Measurements of plastic adsorption blanks revealed that the higher Ru content determined in the RIPA buffer lysis samples may be due a higher amount of Ru extracted from the plastic incubation plates compared with osmosis and sonication. Overall, we found that the choice of lysis method needs to be matched to the information sought and we suggest the least disruptive osmosis method might be the best choice for labile drug-biomolecule adducts. Minimal differences were found for experiments aimed at measuring the overall cell uptake of the Ru complex.
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Affiliation(s)
- Mie Riisom
- School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
- Auckland Cancer Society Research Centre, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Stephen M F Jamieson
- Auckland Cancer Society Research Centre, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
- Department of Pharmacology and Clinical Pharmacology, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Christian G Hartinger
- School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
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Rashaid AB, Alqhazo M, Newbury DF, Kanaan H, El-Khateeb M, Abukashabeh A, Al-Tamimi F. Evaluation of elements in hair samples of children with developmental language disorder (DLD). Nutr Neurosci 2023; 26:138-147. [PMID: 35034571 DOI: 10.1080/1028415x.2021.2022068] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
BACKGROUND Recent studies have highlighted a role for trace elements and toxic metals across neurodevelopmental disorders, including developmental stuttering, Autistic Spectrum Disorders (ASD), and Attention Deficit/Hyperactivity Disorder (ADHD). However, these environmental influences have yet to be explored in relation to Developmental Language Disorder (DLD). METHODS Elemental hair composition of seven elements; zinc (64Zn), magnesium (26Mg), iron (57Fe), potassium (39K), aluminum (27Al), lead (208Pb), and barium (138Ba) were analyzed in hair samples from 35 children affected by DLD and 35 controls with typical language development (TLD) using both inductive coupled plasma optical emission spectroscopy (ICP-OES) and inductive coupled plasma mass spectroscopy (ICP-MS). RESULTS The concentration of 64Zn was significantly lower in the hair of DLD group compared to the TLD control group. All other elements showed similar levels between cases and controls. This pilot study demonstrates the utility of trace elements and toxic metals screening in relation to language disorders and the use of hair samples in such investigations. CONCLUSION The finding that zinc levels differed between cases and controls could represent a clinically relevant result and should be replicated in larger sample size across time. A wider battery of related elements will help to better understand the role of trace elements and toxic metals in DLD.
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Affiliation(s)
- Ayat Bani Rashaid
- Department of Chemistry, Jordan University of Science and Technology, Irbid Jordan
| | - Mazin Alqhazo
- Department of Rehabilitation Sciences, Applied Medical Sciences, Jordan University of Science and Technology, Irbid Jordan
| | - Dianne F Newbury
- Department of Biological and Medical Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Oxford, UK
| | - Heba Kanaan
- Department of Chemistry, Jordan University of Science and Technology, Irbid Jordan
| | - Mohammad El-Khateeb
- Department of Chemistry, Jordan University of Science and Technology, Irbid Jordan
| | - Ahmad Abukashabeh
- Chemical and Physical Analyses Laboratories, Jordan Atomic Energy Commission, Amman, Jordan
| | - Feda Al-Tamimi
- Department of Rehabilitation Sciences, Applied Medical Sciences, Jordan University of Science and Technology, Irbid Jordan
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Gu Q, Dockery L, Daniel MC, Bieberich CJ, Ma R, Zhu L. Nanoparticle Delivery in Prostate Tumors Implanted in Mice Facilitated by Either Local or Whole-Body Heating. Fluids (Basel) 2021; 6:272. [PMID: 34651038 DOI: 10.3390/fluids6080272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This work discusses in vivo experiments that were performed to evaluate whether local or whole-body heating to 40 °C reduced interstitial fluid pressures (IFPs) and enhanced nanoparticle delivery to subcutaneous PC3 human prostate cancer xenograft tumors in mice. After heating, 0.2 mL of a previously developed nanofluid containing gold nanoparticles (10 mg Au/mL) was injected via the tail vein. The induced whole-body hyperthermia led to increases in tumor and mouse body blood perfusion rates of more than 50% and 25%, respectively, while the increases were much smaller in the local heating group. In the whole-body hyperthermia groups, the IFP reduction from the baseline at the tumor center immediately after heating was found to be statistically significant when compared to the control group. The 1 h of local heating group showed IFP reductions at the tumor center, while the IFPs increased in the periphery of the tumor. The intratumoral gold nanoparticle accumulation was quantified using inductively coupled plasma mass spectrometry (ICP-MS). Compared to the control group, 1 h or 4 h of experiencing whole-body hyperthermia resulted in an average increase of 51% or 67% in the gold deposition in tumors, respectively. In the 1 h of local heating group, the increase in the gold deposition was 34%. Our results suggest that 1 h of mild whole-body hyperthermia may be a cost-effective and readily implementable strategy for facilitating nanoparticle delivery to PC3 tumors in mice.
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Brauckmann C, Pramann A, Rienitz O, Schulze A, Phukphatthanachai P, Vogl J. Combining Isotope Dilution and Standard Addition-Elemental Analysis in Complex Samples. Molecules 2021; 26:molecules26092649. [PMID: 33946601 PMCID: PMC8124555 DOI: 10.3390/molecules26092649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 04/23/2021] [Accepted: 04/28/2021] [Indexed: 11/27/2022] Open
Abstract
A new method combining isotope dilution mass spectrometry (IDMS) and standard addition has been developed to determine the mass fractions w of different elements in complex matrices: (a) silicon in aqueous tetramethylammonium hydroxide (TMAH), (b) sulfur in biodiesel fuel, and (c) iron bound to transferrin in human serum. All measurements were carried out using inductively coupled plasma mass spectrometry (ICP–MS). The method requires the gravimetric preparation of several blends (bi)—each consisting of roughly the same masses (mx,i) of the sample solution (x) and my,i of a spike solution (y) plus different masses (mz,i) of a reference solution (z). Only these masses and the isotope ratios (Rb,i) in the blends and reference and spike solutions have to be measured. The derivation of the underlying equations based on linear regression is presented and compared to a related concept reported by Pagliano and Meija. The uncertainties achievable, e.g., in the case of the Si blank in extremely pure TMAH of urel (w(Si)) = 90% (linear regression method, this work) and urel (w(Si)) = 150% (the method reported by Pagliano and Meija) seem to suggest better applicability of the new method in practical use due to the higher robustness of regression analysis.
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Affiliation(s)
- Christine Brauckmann
- Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany; (C.B.); (O.R.); (A.S.)
| | - Axel Pramann
- Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany; (C.B.); (O.R.); (A.S.)
- Correspondence: ; Tel.: +49-531-592-3219
| | - Olaf Rienitz
- Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany; (C.B.); (O.R.); (A.S.)
| | - Alexander Schulze
- Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany; (C.B.); (O.R.); (A.S.)
| | - Pranee Phukphatthanachai
- Bundesanstalt für Materialforschung und-Prüfung (BAM), Richard-Willstätter-Str. 11, 12489 Berlin, Germany; (P.P.); (J.V.)
- National Institute of Metrology (Thailand) (NIMT), 3/4-5 Moo 3, Klong 5, Klong Luang, Pathumthani 12120, Thailand
| | - Jochen Vogl
- Bundesanstalt für Materialforschung und-Prüfung (BAM), Richard-Willstätter-Str. 11, 12489 Berlin, Germany; (P.P.); (J.V.)
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Garay-Baquero DJ, Rebellón-Sánchez DE, Prieto MD, Giraldo-Parra L, Navas A, Atkinson S, McDougall S, Gómez MA. Inductively coupled plasma mass spectrometry method for plasma and intracellular antimony quantification applied to pharmacokinetics of meglumine antimoniate. Bioanalysis 2021; 13:655-67. [PMID: 33829863 DOI: 10.4155/bio-2021-0013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Background A high-throughput method using inductively coupled plasma mass spectrometry (ICP–MS) was developed and validated for the quantitative analysis of antimony in human plasma and peripheral blood mononuclear cells from patients with cutaneous leishmaniasis undergoing treatment with meglumine antimoniate. Materials & methods Antimony was digested in clinical samples with 1% tetramethylammonium hydroxide/1% EDTA and indium was used as internal standard. Accuracy, precision and stability were evaluated. Conclusion Taking the lower limit of quantitation to be the lowest validation concentration with precision and accuracy within 20%, the current assay was successfully validated from 25 to 10000 ng/ml for antimony in human plasma and peripheral blood mononuclear cells. This protocol will serve as a baseline for future analytical designs, aiming to provide a reference method to allow inter-study comparisons. Lay abstract Cutaneous leishmaniasis is a disease caused by single-cell parasites in the genus Leishmania which results in painful skin ulcers and is spread by insect bites. Drugs containing antimony are the mainstay therapy for cutaneous leishmaniasis, but if and how the amount of these compounds in the cells can affect the success of the treatment, remains unknown. Validated methods to reliably measure these amounts in human cells are limited. Here we have developed a validated method that allows quantifying antimony in human plasma and peripheral blood cells from patients undergoing antileishmanial treatment. This protocol will serve as a baseline for future studies aiming to understand how antimonials work to treat leishmaniasis infections and how this therapy can be improved.
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Foroutan A, Fitzsimmons C, Mandal R, Piri-Moghadam H, Zheng J, Guo A, Li C, Guan LL, Wishart DS. The Bovine Metabolome. Metabolites 2020; 10:metabo10060233. [PMID: 32517015 PMCID: PMC7345087 DOI: 10.3390/metabo10060233] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 06/01/2020] [Accepted: 06/02/2020] [Indexed: 01/17/2023] Open
Abstract
From an animal health perspective, relatively little is known about the typical or healthy ranges of concentrations for many metabolites in bovine biofluids and tissues. Here, we describe the results of a comprehensive, quantitative metabolomic characterization of six bovine biofluids and tissues, including serum, ruminal fluid, liver, Longissimus thoracis (LT) muscle, semimembranosus (SM) muscle, and testis tissues. Using nuclear magnetic resonance (NMR) spectroscopy, liquid chromatography–tandem mass spectrometry (LC–MS/MS), and inductively coupled plasma–mass spectrometry (ICP–MS), we were able to identify and quantify more than 145 metabolites in each of these biofluids/tissues. Combining these results with previous work done by our team on other bovine biofluids, as well as previously published literature values for other bovine tissues and biofluids, we were able to generate quantitative reference concentration data for 2100 unique metabolites across five different bovine biofluids and seven different tissues. These experimental data were combined with computer-aided, genome-scale metabolite inference techniques to add another 48,628 unique metabolites that are biochemically expected to be in bovine tissues or biofluids. Altogether, 51,801 unique metabolites were identified in this study. Detailed information on these 51,801 unique metabolites has been placed in a publicly available database called the Bovine Metabolome Database.
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Affiliation(s)
- Aidin Foroutan
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada; (A.F.); (C.F.); (L.L.G.)
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada; (R.M.); (H.P.-M.); (J.Z.); (A.G.); (C.L.)
| | - Carolyn Fitzsimmons
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada; (A.F.); (C.F.); (L.L.G.)
- Agriculture and Agri-Food Canada, Edmonton, AB T6G 2P5, Canada
| | - Rupasri Mandal
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada; (R.M.); (H.P.-M.); (J.Z.); (A.G.); (C.L.)
| | - Hamed Piri-Moghadam
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada; (R.M.); (H.P.-M.); (J.Z.); (A.G.); (C.L.)
| | - Jiamin Zheng
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada; (R.M.); (H.P.-M.); (J.Z.); (A.G.); (C.L.)
| | - AnChi Guo
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada; (R.M.); (H.P.-M.); (J.Z.); (A.G.); (C.L.)
| | - Carin Li
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada; (R.M.); (H.P.-M.); (J.Z.); (A.G.); (C.L.)
| | - Le Luo Guan
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada; (A.F.); (C.F.); (L.L.G.)
| | - David S. Wishart
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada; (R.M.); (H.P.-M.); (J.Z.); (A.G.); (C.L.)
- Department of Computing Science, University of Alberta, Edmonton, AB T6G 2E8, Canada
- Correspondence:
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Pehoiu G, Radulescu C, Murarescu O, Dulama ID, Bucurica IA, Teodorescu S, Stirbescu RM. Health Risk Assessment Associated with Abandoned Copper and Uranium Mine Tailings. Bull Environ Contam Toxicol 2019; 102:504-510. [PMID: 30759262 DOI: 10.1007/s00128-019-02570-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 02/07/2019] [Indexed: 06/09/2023]
Abstract
This study aims to investigate the dose rate and pollution level of Ciudanovita, Lisava, Anina, and Moldova Noua mining tailing dumps. In order to accomplish this, soil samples were collected according to LUCAS 2009/2012, in the summer of 2017. To start with, these samples were measured in situ for dose rate and revealed some interesting aspects, following this, they were investigated in the laboratory using different physico-chemical methods for more complex data. Therefore, two techniques have been used for structural investigation that revealed some particularities in terms of morphology, color and shape (optical microscopy, scanning electron microscopy) and, two for chemical composition (Fourier transform infrared spectroscopy and inductive coupled plasma mass spectrometry), which provided the qualitative confirmation of chemical groups involved in soil composition along with the heavy and radioactive metals presence (i.e. Pb, U, Cu, Cr, Cd, Ni, Zn, and Mn), expressed also by contamination factor.
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Affiliation(s)
- Gica Pehoiu
- Faculty of Humanities, Valahia University of Targoviste, 130105, Targoviste, Romania
| | - Cristiana Radulescu
- Institute of Multidisciplinary Research for Science and Technology, Valahia University of Targoviste, 13 Sinaia Alley, 130004, Targoviste, Romania.
- Faculty of Sciences and Arts, Valahia University of Targoviste, 130004, Targoviste, Romania.
| | - Ovidiu Murarescu
- Faculty of Humanities, Valahia University of Targoviste, 130105, Targoviste, Romania
| | - Ioana Daniela Dulama
- Institute of Multidisciplinary Research for Science and Technology, Valahia University of Targoviste, 13 Sinaia Alley, 130004, Targoviste, Romania
| | - Ioan Alin Bucurica
- Institute of Multidisciplinary Research for Science and Technology, Valahia University of Targoviste, 13 Sinaia Alley, 130004, Targoviste, Romania
| | - Sofia Teodorescu
- Institute of Multidisciplinary Research for Science and Technology, Valahia University of Targoviste, 13 Sinaia Alley, 130004, Targoviste, Romania
| | - Raluca Maria Stirbescu
- Institute of Multidisciplinary Research for Science and Technology, Valahia University of Targoviste, 13 Sinaia Alley, 130004, Targoviste, Romania
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Galvez L, Theiner S, Grabarics M, Kowol CR, Keppler BK, Hann S, Koellensperger G. Critical assessment of different methods for quantitative measurement of metallodrug-protein associations. Anal Bioanal Chem 2018; 410:7211-7220. [PMID: 30155703 PMCID: PMC6208971 DOI: 10.1007/s00216-018-1328-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 07/13/2018] [Accepted: 08/15/2018] [Indexed: 01/18/2023]
Abstract
Quantitative screening for potential drug-protein binding is an essential step in developing novel metal-based anticancer drugs. ICP-MS approaches are at the core of this task; however, many applications lack in the capability of large-scale high-throughput screenings and proper validation. In this work, we critically discuss the analytical figures of merit and the potential method-based quantitative differences applying four different ICP-MS strategies to ex vivo drug-serum incubations. Two candidate drugs, more specifically, two Pt(IV) complexes with known differences of binding affinity towards serum proteins were selected. The study integrated centrifugal ultrafiltration followed by flow injection analysis, turbulent flow chromatography (TFC), and size exclusion chromatography (SEC), all combined with inductively coupled plasma-mass spectrometry (ICP-MS). As a novelty, for the first time, UHPLC SEC-ICP-MS was implemented to enable rapid protein separation to be performed within a few minutes at > 90% column recovery for protein adducts and small molecules. Graphical abstract Quantitative screening for potential drug-protein binding is an essential step in developingnovel metal-based anticancer drugs.
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Affiliation(s)
- Luis Galvez
- Institute of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 38, 1090, Vienna, Austria
| | - Sarah Theiner
- Institute of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 38, 1090, Vienna, Austria
| | - Márkó Grabarics
- Institute of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 38, 1090, Vienna, Austria
| | - Christian R Kowol
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 42, 1090, Vienna, Austria
| | - Bernhard K Keppler
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 42, 1090, Vienna, Austria
| | - Stephan Hann
- Department of Chemistry, Division of Analytical Chemistry, University of Natural Resources and Life Sciences - BOKU Vienna, Muthgasse 18, 1190, Vienna, Austria
| | - Gunda Koellensperger
- Institute of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 38, 1090, Vienna, Austria.
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Li W, Gong J, Wang C, Lin ZJ, Flarakos J. ICP-MS determination of serum aluminum in monkeys subcutaneously administered an alhydrogel-formulated drug candidate. Bioanalysis 2017; 9:1873-81. [PMID: 29171771 DOI: 10.4155/bio-2017-0177] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
AIM To develop and validate an inductively coupled plasma-mass spectrometry method for quantitative bioanalysis of aluminum (Al) in monkey serum in support of a GLP TOX study with alhydrogel-formulated drug candidate. METHODS & RESULTS The method was linear over a dynamic range of 10-1000 ng/ml using a 50-μl sample volume. The intra-/inter-run precision (%CV) of the quality control sample results were ≤7.9% (CV) and the accuracy (%bias) within ±11.0% across all quality control concentrations evaluated. Other validation parameters, including stability under various conditions, extraction recovery and matrix effect, all met the acceptance criteria. CONCLUSION The validated method was successfully implemented for the quantitative analysis of Al in monkey serum to assess the systemic exposure to Al.
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Morton J, Tan E, Suvarna SK. Multi-elemental analysis of human lung samples using inductively coupled plasma mass spectrometry. J Trace Elem Med Biol 2017; 43:63-71. [PMID: 27890402 DOI: 10.1016/j.jtemb.2016.11.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 11/09/2016] [Accepted: 11/16/2016] [Indexed: 11/21/2022]
Abstract
The aim of this study was to establish concentrations of a wide range of elements in human lung samples to allow better identification of potential exposures in subsequent cases. This study reports concentrations of 48 elements (Al, As, Au, B, Ba, Be, Bi, Br, Cd, Ce, Co, Cr, Cs, Cu, Fe, Ga, Gd, Ge, Hf, Hg, In, Li, Mn, Mo, Nb, Ni, Os, Pb, Pd, Pt, Rb, Re, Ru, Sb, Se, Sm, Sn, Sr, Ta, Te, Ti, Tl, Tm, V, W, Y, Zn and Zr) in fresh lung tissue samples from 54 hospital patients, of which 93% exhibited various forms of neoplasia. The lung samples were taken from unaffected, background tissue. The samples were stored as fresh tissue in alcohol, dried and microwave digested before analysis by inductively coupled mass spectrometry (ICP-MS). It was possible to establish 95th percentiles for all elements except for rhenium and for 40 elements mixed effects modelling was undertaken. Overall, the levels reported are commensurate with ranges for those elements that had been reported previously. The data were examined for gender, smoking and occupational exposures to metals. The results show that males have higher lung concentrations of Ni, Cr, Gd, Au and Be than females, but significantly lower lung concentrations of Co, Sn, W and In. Cadmium lung concentrations were significantly higher in smokers. Platinum lung concentrations were higher in those who had undergone chemotherapy and gadolinium concentrations were predictably high in those who had undergone imaging scans. More essential elements such as Cu, Br, Fe and also Ge varied the least within lung samples from individuals whilst Be, Hf and Pt had the greatest variances. Between individuals V and Li lung concentrations varied the most, whilst Cu varied least. Analysis of the data for those who reported as having previously worked with metals showed 24 of the 48 elements determined were higher than those from those who had not reported working with metals.
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Affiliation(s)
- Jackie Morton
- Health & Safety Executive, Harpur Hill, Buxton, Derbyshire, SK17 9JN, United Kingdom.
| | - Emma Tan
- Health & Safety Executive, Harpur Hill, Buxton, Derbyshire, SK17 9JN, United Kingdom
| | - S Kim Suvarna
- Histopathology, Sheffield Teaching Hospitals, Royal Hallamshire Hospital, Sheffield, S10 2JF, United Kingdom
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Diyabalanage S, Fonseka S, Dasanayake DMSNB, Chandrajith R. Environmental exposures of trace elements assessed using keratinized matrices from patients with chronic kidney diseases of uncertain etiology (CKDu) in Sri Lanka. J Trace Elem Med Biol 2017; 39:62-70. [PMID: 27908426 DOI: 10.1016/j.jtemb.2016.08.003] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Revised: 07/21/2016] [Accepted: 08/02/2016] [Indexed: 01/29/2023]
Abstract
An alarming increase in chronic kidney disease with unknown etiology (CKDu) has recently been reported in several provinces in Sri Lanka and chronic exposures to toxic trace elements were blamed for the etiology of this disease. Keratinized matrices such as hair and nails were investigated to determine the possible link between CKDu and toxic element exposures. Elements Li, B, Al, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Sr, Mo, Cd, Ba, Hg and Pb of hair and nails of patients and age that matched healthy controls were determined with Inductively Coupled Plasma Mass Spectrometry (ICP-MS). The results showed that trace element contents in the hair of patients varies in the order of Zn>Fe>Al>Mn>Cu>Ba>Sr>Ni>Pb>Cr>B>Hg>Se>Mo>Co>As>Li>Cd while Fe>Al>Zn>Ni>Cu>Mn>Cr>Ba>Sr>B>Pb>Se>Mo>Co>Hg>Li>As>Cd in nail samples. The hair As levels of 0.007-0.165μgg-1 were found in CKDu subjects. However, no significant difference was observed between cases and controls. The total Se content in hair of CKDu subjects ranged from 0.043 to 0.513μgg-1 while it was varied from 0.031 to 1.15μgg-1 in controls. Selenium in nail samples varied from 0.037μgg-1 to 4.10μgg-1 in CKDu subjects and from 0.042μgg-1 to 2.19μgg-1 in controls. This study implies that substantial proportions of Sri Lankan population are Se deficient irrespective of gender, age and occupational exposure. Although some cutaneous manifestations were observed in patient subjects, chemical analyses of hair and nails indicated that patients were not exposed to toxic levels of arsenic or the other studied toxic elements. Therefore the early suggested causative factors such as exposure to environmental As and Cd, can be ruled out.
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Affiliation(s)
- Saranga Diyabalanage
- Department of Geology, Faculty of Science, University of Peradeniya, Peradeniya, Sri Lanka; Postgraduate Institute of Science, University of Peradeniya, Peradeniya, Sri Lanka
| | - Sanjeewani Fonseka
- Department of Pharmacology, Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka
| | - D M S N B Dasanayake
- Department of Pharmacology, Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka
| | - Rohana Chandrajith
- Department of Geology, Faculty of Science, University of Peradeniya, Peradeniya, Sri Lanka.
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Aborode FA, Raab A, Voigt M, Costa LM, Krupp EM, Feldmann J. The importance of glutathione and phytochelatins on the selenite and arsenate detoxification in Arabidopsis thaliana. J Environ Sci (China) 2016; 49:150-161. [PMID: 28007170 DOI: 10.1016/j.jes.2016.08.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 08/08/2016] [Accepted: 08/13/2016] [Indexed: 05/24/2023]
Abstract
We investigated the role of glutathione (GSH) and phytochelatins (PCs) on the detoxification of selenite using Arabidopsis thaliana. The wild-type (WT) of Arabidopsis thaliana and its mutants (glutathione deficient Cad 2-1 and phytochelatins deficient Cad 1-3) were separately exposed to varying concentrations of selenite and arsenate and jointly to both toxicants to determine their sensitivities. The results of the study revealed that, the mutants were about 20-fold more sensitive to arsenate than the WT, an indication that the GSH and PCs affect arsenate detoxification. On the contrary, the WT and both mutants showed a similar level of sensitivity to selenite, an indication that the GSH and PCs do not significantly affect selenite detoxification. However, the WT is about 8 times more sensitive to selenite than to arsenate, and the mutants were more resistant to selenite than arsenate by a factor of 2. This could not be explained by the accumulation of both elements in roots and shoots in exposure experiments. The co-exposure of the WT indicates a synergistic effect with regards to toxicity since selenite did not induce PCs but arsenic and selenium compete in their PC binding as revealed by speciation analysis of the root extracts using HPLC-ICP-MS/ESI-MS. In the absence of PCs an antagonistic effect has been detected which might suggest indirectly that the formation of Se glutathione complex prevent the formation of detrimental selenopeptides. This study, therefore, revealed that PC and GSH have only a subordinate role in the detoxification of selenite.
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Affiliation(s)
- Fatai Adigun Aborode
- Trace Element Speciation Laboratory, Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, Scotland, UK.
| | - Andrea Raab
- Trace Element Speciation Laboratory, Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, Scotland, UK
| | - Matthias Voigt
- Trace Element Speciation Laboratory, Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, Scotland, UK
| | - Leticia Malta Costa
- Trace Element Speciation Laboratory, Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, Scotland, UK; Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte, MG CEP: 31270-901, Brazil
| | - Eva M Krupp
- Trace Element Speciation Laboratory, Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, Scotland, UK
| | - Joerg Feldmann
- Trace Element Speciation Laboratory, Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, Scotland, UK.
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Pantoja Munoz L, Purchase D, Jones H, Raab A, Urgast D, Feldmann J, Garelick H. The mechanisms of detoxification of As(III), dimethylarsinic acid (DMA) and As(V) in the microalga Chlorella vulgaris. Aquat Toxicol 2016; 175:56-72. [PMID: 26994369 DOI: 10.1016/j.aquatox.2016.02.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 02/24/2016] [Accepted: 02/26/2016] [Indexed: 06/05/2023]
Abstract
The response of Chlorella vulgaris when challenged by As(III), As(V) and dimethylarsinic acid (DMA) was assessed through experiments on adsorption, efflux and speciation of arsenic (reduction, oxidation, methylation and chelation with glutathione/phytochelatin [GSH/PC]). Our study indicates that at high concentrations of phosphate (1.62mM of HPO4(2-)), upon exposure to As(V), cells are able to shift towards methylation of As(V) rather than PC formation. Treatment with As(V) caused a moderate decrease in intracellular pH and a strong increase in the concentration of free thiols (GSH). Passive surface adsorption was found to be negligible for living cells exposed to DMA and As(V). However, adsorption of As(III) was observed to be an active process in C. vulgaris, because it did not show saturation at any of the exposure periods. Chelation of As(III) with GS/PC and to a lesser extent hGS/hPC is a major detoxification mechanism employed by C. vulgaris cells when exposed to As(III). The increase of bound As-GS/PC complexes was found to be strongly related to an increase in concentration of As(III) in media. C. vulgaris cells did not produce any As-GS/PC complex when exposed to As(V). This may indicate that a reduction step is needed for As(V) complexation with GSH/PC. C. vulgaris cells formed DMAS(V)-GS upon exposure to DMA independent of the exposure period. As(III) triggers the formation of arsenic complexes with PC and homophytochelatins (hPC) and their compartmentalisation to vacuoles. A conceptual model was devised to explain the mechanisms involving ABCC1/2 transport. The potential of C. vulgaris to bio-remediate arsenic from water appeared to be highly selective and effective without the potential hazard of reducing As(V) to As(III), which is more toxic to humans.
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Affiliation(s)
- L Pantoja Munoz
- Department of Natural Sciences, School of Science and Technology, Middlesex University, The Burroughs, London NW4 4BT, United Kingdom
| | - D Purchase
- Department of Natural Sciences, School of Science and Technology, Middlesex University, The Burroughs, London NW4 4BT, United Kingdom
| | - H Jones
- Department of Natural Sciences, School of Science and Technology, Middlesex University, The Burroughs, London NW4 4BT, United Kingdom
| | - A Raab
- College of Physical Sciences - Chemistry, Trace Element Speciation Laboratory (TESLA), University of Aberdeen, Meston Walk, Aberdeen AB24 3UE, United Kingdom
| | - D Urgast
- College of Physical Sciences - Chemistry, Trace Element Speciation Laboratory (TESLA), University of Aberdeen, Meston Walk, Aberdeen AB24 3UE, United Kingdom
| | - J Feldmann
- College of Physical Sciences - Chemistry, Trace Element Speciation Laboratory (TESLA), University of Aberdeen, Meston Walk, Aberdeen AB24 3UE, United Kingdom
| | - H Garelick
- Department of Natural Sciences, School of Science and Technology, Middlesex University, The Burroughs, London NW4 4BT, United Kingdom.
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Dallago BSL, Lima BAF, Braz SV, Mustafa VDS, McManus C, Paim TDP, Campeche A, Gomes EF, Louvandini H. Tissue accumulation and urinary excretion of Cr in chromium picolinate (CrPic)-supplemented lambs. J Trace Elem Med Biol 2016; 35:30-5. [PMID: 27049124 DOI: 10.1016/j.jtemb.2016.01.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Revised: 11/16/2015] [Accepted: 01/11/2016] [Indexed: 01/28/2023]
Abstract
Chromium (Cr) concentrations in liver, kidney, spleen, heart, lymph node, skeletal muscle, bone, testis and urine of lambs were measured to trace the biodistribution and bioaccumulation of Cr after oral supplementation with chromium picolinate (CrPic). Twenty-four Santa Inês lambs were treated with four different concentrations of CrPic: placebo, 0.250, 0.375 and 0.500 mg of CrPic/animal/day for 84 days. The basal diet consisted of Panicum maximum cv Massai hay and concentrate. Cr concentrations were measured by ICP-MS measuring (52)Cr as collected mass. There was a positive linear relationship between dose administered and the accumulation of Cr in the heart, lungs and testis. Urinary excretion of Cr occurred in a time and dose-dependent manner, so the longer or more dietary Cr provided, the greater excretion of the element. As some non-carcass components (such as lungs or heart) are added to bone and visceral meal to feed animals, there is a risk of bioaccumulation and biomagnification due to Cr offered as CrPic in the diet.
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Affiliation(s)
- Bruno Stéfano Lima Dallago
- Faculdade de Agronomia e Medicina Veterinária, Universidade de Brasília-UnB, Campus Universitário Darcy Ribeiro, ICC-Sul, Brasília/DF, CEP 70910-900, Brazil; Instituto Nacional de Ciência e Tecnologia-Informação Genético-Sanitária da Pecuária Brasileira (CNPq/INCT/IGSPB), Belo Horizonte/MG, Brazil.
| | - Bárbara Alcântara Ferreira Lima
- Laboratório de Geocronologia, Universidade de Brasília-UnB, Rede Geochronos, Campus Universitário Darcy Ribeiro, Brasília/DF, CEP 70910-900, Brazil.
| | - Shélida Vasconcelos Braz
- Laboratório de Microscopia Eletrônica, Instituto de Biologia, Universidade de Brasília-UnB, Campus Universitário Darcy Ribeiro, Brasília/DF, CEP 70910-900, Brazil.
| | - Vanessa da Silva Mustafa
- Laboratório de Patologia Veterinária, Universidade de Brasília-UnB, Campus Universitário Darcy Ribeiro, Hospital Veterinário L4-Norte, Brasília/DF, CEP 70910-900, Brazil.
| | - Concepta McManus
- Faculdade de Agronomia e Medicina Veterinária, Universidade de Brasília-UnB, Campus Universitário Darcy Ribeiro, ICC-Sul, Brasília/DF, CEP 70910-900, Brazil; Instituto Nacional de Ciência e Tecnologia-Informação Genético-Sanitária da Pecuária Brasileira (CNPq/INCT/IGSPB), Belo Horizonte/MG, Brazil.
| | - Tiago do Prado Paim
- Instituto Federal de Educação, Ciência e Tecnologia Goiano, Campus Iporá, Av. Oeste s/n, Iporá/GO, CEP 76200-000, Brazil.
| | - Aline Campeche
- Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Av. Centenário, n° 303, Caixa Postal 96, Piracicaba/SP, CEP 13400-970, Brazil.
| | - Edgard Franco Gomes
- Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Av. Centenário, n° 303, Caixa Postal 96, Piracicaba/SP, CEP 13400-970, Brazil.
| | - Helder Louvandini
- Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Av. Centenário, n° 303, Caixa Postal 96, Piracicaba/SP, CEP 13400-970, Brazil; Instituto Nacional de Ciência e Tecnologia-Informação Genético-Sanitária da Pecuária Brasileira (CNPq/INCT/IGSPB), Belo Horizonte/MG, Brazil.
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Du L, Turner J. Using PM(2.5) lanthanoid elements and nonparametric wind regression to track petroleum refinery FCC emissions. Sci Total Environ 2015; 529:65-71. [PMID: 26005750 DOI: 10.1016/j.scitotenv.2015.05.034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Revised: 05/06/2015] [Accepted: 05/09/2015] [Indexed: 06/04/2023]
Abstract
A long term air quality study is being conducted in Roxana, Illinois, USA, at the fenceline of a petroleum refinery. Measurements include 1-in-6 day 24-hour integrated ambient fine particulate matter (PM2.5) speciation following the Chemical Speciation Network (CSN) sampling and analysis protocols. Lanthanoid elements, some of which are tracers of fluidized-bed catalytic cracker (FCC) emissions, are also measured by inductively coupled plasma-mass spectrometry (ICP-MS) after extraction from PM2.5 using hot block-assisted acid digestion. Lanthanoid recoveries of 80-90% were obtained for two ambient particulate matter standard reference materials (NIST SRM 1648a and 2783). Ambient PM2.5 La patterns could be explained by a two-source model representing resuspended soil and FCC emissions with enhanced La/Ce ratios when impacted by the refinery. Nonparametric wind regression demonstrates that when the monitoring station was upwind of the refinery the mean La/Ce ratio is consistent with soil and when the monitoring station is downwind of the refinery the mean ratio is more than four times higher for bearings that corresponds to maximum impacts. Source apportionment modeling using EPA UNMIX and EPA PMF could not reliably apportion PM2.5 mass to the FCC emissions. However, the weight of evidence is that such contributions are small with no large episodes observed for the 164 samples analyzed. This study demonstrates the applicability of a hot block-assisted digestion protocol for the extraction of lanthanoid elements as well as insights obtained from long-term monitoring data including wind direction-based analyses.
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Affiliation(s)
- Li Du
- Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, Campus Box 1180, One Brookings Drive, St. Louis, MO 63130, USA
| | - Jay Turner
- Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, Campus Box 1180, One Brookings Drive, St. Louis, MO 63130, USA.
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Ahamad SR, Alhaider AQ, Raish M, Shakeel F. Metabolomic and elemental analysis of camel and bovine urine by GC-MS and ICP-MS. Saudi J Biol Sci 2015; 24:23-29. [PMID: 28053567 PMCID: PMC5198918 DOI: 10.1016/j.sjbs.2015.09.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 08/22/2015] [Accepted: 09/01/2015] [Indexed: 11/29/2022] Open
Abstract
Recent studies from the author’s laboratory indicated that camel urine possesses antiplatelet activity and anti-cancer activity which is not present in bovine urine. The objective of this study is to compare the volatile and elemental components of bovine and camel urine using GC–MS and ICP–MS analysis. We are interested to know the component that performs these biological activities. The freeze dried urine was dissolved in dichloromethane and then derivatization process followed by using BSTFA for GC–MS analysis. Thirty different compounds were analyzed by the derivatization process in full scan mode. For ICP–MS analysis twenty eight important elements were analyzed in both bovine and camel urine. The results of GC–MS and ICP–MS analysis showed marked difference in the urinary metabolites. GC–MS evaluation of camel urine finds a lot of products of metabolism like benzene propanoic acid derivatives, fatty acid derivatives, amino acid derivatives, sugars, prostaglandins and canavanine. Several research reports reveal the metabolomics studies on camel urine but none of them completely reported the pharmacology related metabolomics. The present data of GC–MS suggest and support the previous studies and activities related to camel urine.
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Affiliation(s)
- Syed Rizwan Ahamad
- Central Laboratory, Research Center, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Abdul Qader Alhaider
- Department of Pharmacology and Camel Biomedical Research Unit, College of Medicine, King Saud University, Riyadh 11461, Saudi Arabia
| | - Mohammad Raish
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Faiyaz Shakeel
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia; Center of Excellence in Biotechnology Research, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
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Tokumoto M, Kutsukake N, Yamanishi E, Katsuta D, Anan Y, Ogra Y. Arsenic (+3 oxidation state) methyltransferase is a specific but replaceable factor against arsenic toxicity. Toxicol Rep 2014; 1:589-595. [PMID: 28962272 PMCID: PMC5598430 DOI: 10.1016/j.toxrep.2014.08.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Revised: 08/22/2014] [Accepted: 08/23/2014] [Indexed: 01/31/2023] Open
Abstract
AS3MT catalyzed the methylation of arsenic. Selenium and tellurium were not methylated in the presence of AS3MT. AS3MT knockdown had no effect on the cytotoxicity of arsenic.
Inorganic metalloids, such as arsenic (As), antimony (Sb), selenium (Se), and tellurium (Te), are methylated in biota. In particular, As, Se, and Te are methylated and excreted in urine. The biomethylation is thought to be a means to detoxify the metalloids. The methylation of As is catalyzed by arsenic (+3 oxidation state) methyltransferase (AS3MT). However, it is still unclear whether AS3MT catalyzes the methylation of the other metalloids. It is also unclear whether other factors catalyze the As methylation instead of AS3MT. Recombinant human AS3MT (rhAS3MT) was prepared and used in the in vitro methylation of As, Se, and Te. As, but not Se and Te, was specifically methylated in the presence of rhAS3MT. Then, siRNA targeting AS3MT was introduced into human hepatocarcinoma (HepG2) cells. Although AS3MT protein expression was completely silenced by the gene knockdown, no increase in As toxicity was found in the HepG2 cells transfected with AS3MT-targeting siRNA. We conclude that AS3MT catalyzes the methylation of As and not other biomethylatable metalloids, such as Se and Te. We speculate that other methylation enzyme(s) also catalyze the methylation of As in HepG2 cells.
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Affiliation(s)
| | | | | | | | | | - Yasumitsu Ogra
- Corresponding author. Tel.: +81 42 721 1563; fax: +81 42 721 1563
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Ossipov K, Scaffidi-Domianello YY, Seregina IF, Galanski MS, Keppler BK, Timerbaev AR, Bolshov MA. Inductively coupled plasma mass spectrometry for metallodrug development: albumin binding and serum distribution of cytotoxic cis- and trans-isomeric platinum(II) complexes. J Inorg Biochem 2014; 137:40-5. [PMID: 24803025 DOI: 10.1016/j.jinorgbio.2014.04.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Revised: 04/11/2014] [Accepted: 04/11/2014] [Indexed: 01/31/2023]
Abstract
Binding to plasma proteins is one of the major metabolic pathways of metallodrugs. In the case of platinum-based anticancer drugs, it is the interaction with serum albumin that affects most strongly their in vivo behavior. Since both the configuration, i.e. cis-trans-isomerism, and the nature of leaving groups have an effect on the reactivity of Pt(II) coordination compounds toward biomolecules, a set of cis- and trans-configured complexes with halide leaving groups (Cl(-), Br(-), and I(-)) and 2-propanone oxime as carrier ligands was chosen for this study. Binding experiments were performed both with albumin and human serum and the Pt content in ultrafiltrates was quantified using inductively coupled plasma mass spectrometry. In order to shed light on the binding mechanism, the albumin binding constant (KHSA) and the octanol-water partition coefficient (P) were experimentally determined and relationships between log KHSA and log P were explored. The correlation was found significant only for cis-configured platinum complexes (R(2)=0.997 and standard deviation=0.02), indicating a certain contribution of the nonspecific binding which is largely dominated by the lipophilicity of compounds. In contrast, for trans-complexes a specific molecular recognition element plays a significant role. The participation of albumin in drug distribution in blood serum was assessed using an equilibrium distribution model and by comparing the percentage binding in the albumin and serum-protein fractions. Irrespective of the compound polarity, albumin contributes from 85 to 100% to the overall binding in serum.
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Affiliation(s)
- Konstantin Ossipov
- Division of Analytical Chemistry, Chemistry Department, Moscow State University, Leninskie Gory 1, 119992 Moscow, Russia
| | | | - Irina F Seregina
- Division of Analytical Chemistry, Chemistry Department, Moscow State University, Leninskie Gory 1, 119992 Moscow, Russia
| | - Mathea S Galanski
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria
| | - Bernhard K Keppler
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria
| | - Andrei R Timerbaev
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria; Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, Kosygin Str. 19, 119991 Moscow, Russia.
| | - Mikhail A Bolshov
- Division of Analytical Chemistry, Chemistry Department, Moscow State University, Leninskie Gory 1, 119992 Moscow, Russia; Institute for Spectroscopy, Russian Academy of Sciences, Fizicheskaya 5, 142190 Troitsk (Moscow Region), Russia
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Calderon RL, Hudgens EE, Carty C, He B, Le XC, Rogers J, Thomas DJ. Biological and behavioral factors modify biomarkers of arsenic exposure in a U.S. population. Environ Res 2013; 126:134-44. [PMID: 23777639 DOI: 10.1016/j.envres.2013.04.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2012] [Revised: 04/01/2013] [Accepted: 04/19/2013] [Indexed: 05/21/2023]
Abstract
Although consumption of drinking water contaminated with inorganic arsenic is usually considered the primary exposure route, aggregate exposure to arsenic depends on direct consumption of water, use of water in food preparation, and the presence in arsenicals in foods. To gain insight into the effects of biological and behavioral factors on arsenic exposure, we determined arsenic concentrations in urine and toenails in a U.S. population that uses public or private water supplies containing inorganic arsenic. Study participants were 904 adult residents of Churchill County, Nevada, whose home tap water supplies contained <3 to about 1200 µg of arsenic per liter. Biomarkers of exposure for this study were summed urinary concentrations of inorganic arsenic and its methylated metabolites (speciated arsenical), of all urinary arsenicals (total arsenical), and of all toenail arsenicals (total arsenical). Increased tap water arsenic concentration and consumption were associated with significant upward trends for urinary speciated and total and toenail total arsenical concentrations. Significant gender differences in concentrations of speciated and total arsenicals in urine and toenails reflected male-female difference in water intake. Both recent and higher habitual seafood consumption significantly increased urinary total but not speciated arsenical concentration. In a stepwise general linear model, seafood consumption significantly predicted urinary total arsenical but not urinary speciated or toenail total arsenical concentrations. Smoking behavior significantly predicted urinary speciated or total arsenical concentration. Gender, tap water arsenic concentration, and primary drinking water source significantly predicted urinary speciated and total concentrations and toenail total arsenical concentrations. These findings confirm the primacy of home tap water as a determinant of arsenic concentration in urine and toenails. However, biological and behavioral factors can modify exposure-response relations for these biomarkers. Refining estimates of the influence of these factors will permit better models of dose-response relations for this important environmental contaminant.
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Affiliation(s)
- Rebecca L Calderon
- Environmental Public Health Division, National Health and Environmental Effects Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, NC 27709, USA
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Zheng LN, Wang M, Wang B, Chen HQ, Ouyang H, Zhao YL, Chai ZF, Feng WY. Determination of quantum dots in single cells by inductively coupled plasma mass spectrometry. Talanta 2013; 116:782-7. [PMID: 24148474 DOI: 10.1016/j.talanta.2013.07.075] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Revised: 07/22/2013] [Accepted: 07/27/2013] [Indexed: 01/19/2023]
Abstract
In order to assess cytotoxicity of quantum dots (QDs), new reliable analytical techniques that can provide comparative information at a single-cell level are required. In this study, a single cell ICP-MS (SC-ICP-MS) method was established to determine intracellular QDs in single cells after exposure. Uptake kinetics of QDs into cells was studied using the established method. The results were compared and validated by flow cytometry and cell digestion methods. In contrast to other methods, SC-ICP-MS can directly detect QDs and their degradation products via elements, and thus is a promising complement to available methods for single cell analysis and is expected to be a critical tool in the future.
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Amaral CDB, Nóbrega JA, Nogueira ARA. Sample preparation for arsenic speciation in terrestrial plants--a review. Talanta 2013; 115:291-9. [PMID: 24054594 DOI: 10.1016/j.talanta.2013.04.072] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Revised: 04/24/2013] [Accepted: 04/25/2013] [Indexed: 12/31/2022]
Abstract
Arsenic is an element widely present in nature. Additionally, it may be found as different species in several matrices and therefore it is one of the target elements in chemical speciation. Although the number of studies in terrestrial plants is low, compared to matrices such as fish or urine, this number is raising due to the fact that this type of matrix are closely related to the human food chain. In speciation analysis, sample preparation is a critical step and several extraction procedures present drawbacks. In this review, papers dealing with extraction procedures, analytical methods, and studies of species conservation in plants cultivated in terrestrial environment are critically discussed. Analytical procedures based on extractions using water or diluted acid solutions associated with HPLC-ICP-MS are good alternatives, owing to their versatility and sensitivity, even though less expensive strategies are shown as feasible choices.
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Affiliation(s)
- Clarice D B Amaral
- Group of Applied Instrumental Analysis, Department of Chemistry, Federal University of São Carlos, PO Box 676, 13560-970 São Carlos, SP, Brazil; Embrapa Southeast Livestock, PO Box 339, 13560-970 São Carlos, SP, Brazil
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Millour S, Noël L, Kadar A, Chekri R, Vastel C, Sirot V, Leblanc JC, Guérin T. Pb, Hg, Cd, As, Sb and Al levels in foodstuffs from the 2nd French total diet study. Food Chem 2010; 126:1787-99. [PMID: 25213958 DOI: 10.1016/j.foodchem.2010.12.086] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2010] [Revised: 11/19/2010] [Accepted: 12/17/2010] [Indexed: 12/01/2022]
Abstract
In 2006, the French Food Safety Agency (AFSSA) conducted the second French total diet study (TDS) to estimate dietary exposures of main minerals and trace elements from 1319 samples of foods habitually consumed by the French population. The foodstuffs were analysed by ICP-MS after microwave-assisted digestion. Contamination data for lead, mercury, cadmium, arsenic, antimony and aluminium were reported and compared with results from the previous French total diet study. The results are comparable with those from the rest of Europe. "Fish and fish products" and "sweeteners, honey and confectionery" were the food groups showing the highest cumulated contents in Pb, Hg, Cd, As, Al and Sb. However, observed levels remained low and were generally well below the maximum levels set by the current European regulation for lead, cadmium and mercury.
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Affiliation(s)
- Sandrine Millour
- Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail, ANSES unités CIME et AQR-PC, ANSES-LSA 23, Avenue du Général de Gaulle, F-94706 Maisons-Alfort, France
| | - Laurent Noël
- Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail, ANSES unités CIME et AQR-PC, ANSES-LSA 23, Avenue du Général de Gaulle, F-94706 Maisons-Alfort, France
| | - Ali Kadar
- Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail, ANSES unités CIME et AQR-PC, ANSES-LSA 23, Avenue du Général de Gaulle, F-94706 Maisons-Alfort, France
| | - Rachida Chekri
- Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail, ANSES unités CIME et AQR-PC, ANSES-LSA 23, Avenue du Général de Gaulle, F-94706 Maisons-Alfort, France
| | - Christelle Vastel
- Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail, ANSES unités CIME et AQR-PC, ANSES-LSA 23, Avenue du Général de Gaulle, F-94706 Maisons-Alfort, France
| | - Véronique Sirot
- Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail, ANSES unités CIME et AQR-PC, ANSES-LSA 23, Avenue du Général de Gaulle, F-94706 Maisons-Alfort, France
| | - Jean-Charles Leblanc
- Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail, ANSES unités CIME et AQR-PC, ANSES-LSA 23, Avenue du Général de Gaulle, F-94706 Maisons-Alfort, France
| | - Thierry Guérin
- Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail, ANSES unités CIME et AQR-PC, ANSES-LSA 23, Avenue du Général de Gaulle, F-94706 Maisons-Alfort, France.
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