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Li JB, Li D, Liu YY, Cao A, Wang H. Cytotoxicity of vanadium dioxide nanoparticles to human embryonic kidney cell line: Compared with vanadium(IV/V) ions. Environ Toxicol Pharmacol 2024; 106:104378. [PMID: 38295964 DOI: 10.1016/j.etap.2024.104378] [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] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Accepted: 01/24/2024] [Indexed: 02/13/2024]
Abstract
Vanadium dioxide (VO2) is a class of thermochromic material with potential applications in various fields. Massive production and wide application of VO2 raise the concern of its potential toxicity to human, which has not been fully understood. Herein, a commercial VO2 nanomaterial (S-VO2) was studied for its potential toxicity to human embryonic kidney cell line HEK293, and two most common vanadium ions, V(IV) and V(V), were used for comparison to reveal the related mechanism. Our results indicate that S-VO2 induces dose-dependent cellular viability loss mainly through the dissolved V ions of S-VO2 outside the cell rather than S-VO2 particles inside the cell. The dissolved V ions of S-VO2 overproduce reactive oxygen species to trigger apoptosis and proliferation inhibition via several signaling pathways of cell physiology, such as MAPK and PI3K-Akt, among others. All bioassays indicate that the differences in toxicity between S-VO2, V(IV), and V(V) in HEK293 cells are very small, supporting that the toxicity is mainly due to the dissolved V ions, in the form of V(V) and/or V(IV), but the V(V)'s behavior is more similar to S-VO2 according to the gene expression analysis. This study reveals the toxicity mechanism of nanosized VO2 at the molecular level and the role of dissolution of VO2, providing valuable information for safe applications of vanadium oxides.
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Affiliation(s)
- Jia-Bei Li
- Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, China
| | - Dan Li
- Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, China
| | - Yuan-Yuan Liu
- Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, China
| | - Aoneng Cao
- Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, China
| | - Haifang Wang
- Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, China.
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2
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Wang Y, Lu W, Wang L, Li Y, Wu H, Zhu X, Zhang C, Wang K. Vanadate-based Fe-MOFs as promising negative electrode for hybrid supercapacitor device. Nanotechnology 2024; 35:205402. [PMID: 38198714 DOI: 10.1088/1361-6528/ad1d12] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 01/10/2024] [Indexed: 01/12/2024]
Abstract
In the supercapacitor field, negative electrodes are mainly concentrated in carbon-based materials, such as activated carbon, carbon nanotubes, graphene, and so forth. However, materials based on metal-organic frameworks (MOFs) as negative active components are relatively rare. Herein, a series of composite materials based on graphene oxide (GO) and vanadate-based Fe-organic frameworks have been prepared by hydrothermal method namely GO/Fe-VO4-BIPY. The deposition amount of polyoxometalate-based metal-organic frameworks (POMOFs) on the surface of graphene is adjusted by changing the content of POMOFs. Through the deposition, it can effectively reduce the accumulation between graphene, and increase the dispersion of POMOFs. As a result, the charge storage performance of the as-obtained materials is greatly improved. Among these materials, GO/Fe-VO4-BIPY-1 has the most prominent performance, with a specific capacitance of 190 F g-1at 0.5 A g-1, which is attributed to the excellent synergistic effect between the Faraday chemical reaction and electric double-layer capacitance. In comparison with pristine Fe-VO4-BIPY, GO/Fe-VO4-BIPY-1 delivers more excellent surface area and therefore exhibits abundant redox reaction sites, achieving better electrochemical performance the best. After assembly with the positive Ni(OH)2electrode, the maximum energy density of 46.84 W h kg-1at a power density of 850 W kg-1is achieved.
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Affiliation(s)
- Yuting Wang
- Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, People's Republic of China
| | - Wenjie Lu
- Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, People's Republic of China
| | - Lianchao Wang
- Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, People's Republic of China
| | - Yihao Li
- Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, People's Republic of China
| | - Hua Wu
- Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, People's Republic of China
| | - Xudong Zhu
- Department of Physics, College of Sciences, Nanjing Agricultural University, Nanjing 210095, People's Republic of China
| | - Cheng Zhang
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou, 215009, People's Republic of China
| | - Kuaibing Wang
- Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, People's Republic of China
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de Castro DT, Ferreira I, Oliveira VC, Schiavon MA, Dos Reis AC. Denture Adhesives Associated with Silver Vanadate: Antimicrobial Approach Against Multi- Species Biofilms on Acrylic Resin Surfaces. Eur J Prosthodont Restor Dent 2024. [PMID: 38373220 DOI: 10.1922/ejprd_2640decastro09] [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] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 01/17/2024] [Indexed: 02/21/2024]
Abstract
Alternatives have been sought to add an antimicrobial property to denture adhesives. This study evaluated the antimicrobial potential of adhesives associated with nanostructured silver vanadate decorated with silver nanoparticles (β-AgVO3). Specimens in acrylic resin were treated with the adhesives associated with β-AgVO3 (1%, 2.5%, 5% and 10%). As control, specimens treated only with Ultra Corega Cream (UCC) or Ultra Corega Powder (UCP) adhesive were used. Multispecies biofilm of Candida albicans, Candida glabrata, Streptococcus mutans and Staphylococcus aureus was evaluated by counting colony forming units per milliliter (CFU/mL), colorimetric assay and fluorescence microscopy. The data were analyzed using the two-way analysis of variance (ANOVA) and Bonferroni multiple comparisons test (α=0.05). For both adhesives, a small amount of β-AgVO3 (1%) completely inhibited S. mutans (P⟨0.05). For the other microorganisms, there was a reduction in metabolic activity and complete inhibition in the groups with intermediate or greater amounts of nanomaterial (P⟨0.05), except for C. albicans, which was reduced (P⟨0.05) but not completely inhibited in UCP. Microscopy that showed less biofilm in the groups with β-AgVO3 and in the UCC than UCP. Denture adhesives in powder and cream form with β-AgVO3 showed potential antimicrobial activity against multispecies biofilm. Powder adhesive showed higher biofilm formation.
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Affiliation(s)
- D T de Castro
- Postdoctorate, Department of Dental Materials and Prosthodontics, Ribeirao Preto School of Dentistry, University of Sao Paulo, Ribeirao Preto- SP, Brazil
| | - I Ferreira
- Graduate Student, Department of Dental Materials and Prosthodontics, Ribeirao Preto School of Dentistry, University of Sao Paulo, Ribeirao Preto-SP, Brazil
| | - V C Oliveira
- Specialized Laboratory Technician, Department of Dental Materials and Prosthodontics, Ribeirao Preto School of Dentistry, University of Sao Paulo, Ribeirao Preto-SP, Brazil
| | - M A Schiavon
- Titular Professor, Department of Natural Sciences, Federal University of São Joao Del-Rei (UFSJ), São Joao Del-Rei (MG), Brazil
| | - A C Dos Reis
- Associated Professor, Department of Dental Materials and Prosthodontics, Ribeirao Preto School of Dentistry, University of Sao Paulo, Ribeirao Preto-SP, Brazil
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Brooke H, Ghoshray M, Ibrahim A, Lloyd MD. Steady-state kinetic analysis of reversible enzyme inhibitors: A case study on calf intestine alkaline phosphatase. Methods Enzymol 2023; 690:39-84. [PMID: 37858536 DOI: 10.1016/bs.mie.2023.06.015] [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] [Indexed: 10/21/2023]
Abstract
Enzymes are important drug targets and inhibition of enzymatic activity is an important therapeutic strategy. Enzyme assays measuring catalytic activity are utilized in both the discovery and development of new drugs. Colorimetric assays based on the release of 4-nitrophenol from substrates are commonly used. 4-Nitrophenol is only partly ionized to 4-nitrophenolate under typical assay conditions (pH 7-9) leading to under-estimation of product formation rates due to the much lower extinction coefficient of 4-nitrophenol compared to 4-nitrophenolate. Determination of 4-nitrophenol pKa values based on absorbance at 405 nm as a function of experimental pH values is reported, allowing for calculation of a corrected extinction coefficient at the assay pH. Characterization of inhibitor properties using steady-state enzyme kinetics is demonstrated using calf intestine alkaline phosphatase and 4-nitrophenyl phosphate as substrate at pH ∼8.2. The following kinetic parameters were determined: Km= 40±3 µM; Vmax= 72.8±1.2 µmolmin-1mg protein-1; kcat= 9.70±0.16 s-1; kcat/Km= 2.44±0.16 × 105 M-1s-1 (mean± SEM, N = 4). Sodium orthovanadate and EDTA were used as model inhibitors and the following pIC50 values were measured using dose-response curves: 6.61±0.08 and 3.07±0.03 (mean±SEM, N = 4). Rapid dilution experiments determined that inhibition was reversible for sodium orthovanadate and irreversible for EDTA. A Ki value for orthovanadate of 51±8 nM (mean±SEM, N = 3) was determined. Finally, data analysis and statistical design of experiments are discussed.
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Affiliation(s)
- Henry Brooke
- Department of Life Sciences, University of Bath, Claverton Down, Bath, United Kingdom
| | - Meghna Ghoshray
- Department of Life Sciences, University of Bath, Claverton Down, Bath, United Kingdom
| | - Archad Ibrahim
- Department of Life Sciences, University of Bath, Claverton Down, Bath, United Kingdom
| | - Matthew D Lloyd
- Department of Life Sciences, University of Bath, Claverton Down, Bath, United Kingdom.
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Dejene FB. Sol-gel produced Zn 2V 2O 7 phosphors' improved luminous properties: The role of thermal treatment. Heliyon 2023; 9:e13878. [PMID: 36879967 PMCID: PMC9984857 DOI: 10.1016/j.heliyon.2023.e13878] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 02/11/2023] [Accepted: 02/14/2023] [Indexed: 02/22/2023] Open
Abstract
Zn2V2O7 phosphor was made using a sol-gel technique and then annealed at temperatures ranging from 700 to 850 °C. The x-ray diffraction (XRD) results revealed that Zn2V2O7 exhibits a single monoclinic phase. The width at half-maximum of the (022) XRD peak shrank overall resulting in improved crystallinity of the Zn2V2O7 phosphors with higher annealing temperatures. Because of the good crystallinity of Zn2V2O7, scanning electron microscopy (SEM) indicates that grain size increases as the annealing temperature rises. When the temperature was raised from 35 °C to 500 °C, TGA findings revealed a total weight loss of approximately 65%. The photoluminescence emission spectra of annealed Zn2V2O7 powders revealed a wide green-yellowish emission in the range of 400 nm-800 nm. As the annealing temperature was raised, the crystallinity improved, resulting in an increase in PL intensity. The peak of the PL emission shifts from green to yellow emission.
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Affiliation(s)
- Francis Birhanu Dejene
- Department of Chemical and Physical Sciences, Walter Sisulu University, Private Bag X1, Code 5117, Mthatha, South Africa
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Waidyanatha S, Weber FX, Fallacara DM, Harrington JM, Levine K, Robinson VG, Sparrow BR, Stout MD, Fernando R, Hooth MJ, Xie G, Roberts GK. Corrigendum to "Systemic exposure and urinary excretion of vanadium following perinatal subchronic exposure to vanadyl sulfate and sodium metavanadate via drinking water" [Toxicol. Lett. 360 (2022) 53-61]. Toxicol Lett 2023; 373:210. [PMID: 36435680 DOI: 10.1016/j.toxlet.2022.11.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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He X, Jarrell ZR, Liang Y, Ryan Smith M, Orr ML, Marts L, Go YM, Jones DP. Vanadium pentoxide induced oxidative stress and cellular senescence in human lung fibroblasts. Redox Biol 2022; 55:102409. [PMID: 35870339 PMCID: PMC9307685 DOI: 10.1016/j.redox.2022.102409] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 06/30/2022] [Accepted: 07/12/2022] [Indexed: 11/25/2022] Open
Abstract
Both environmental exposure to vanadium pentoxide (V2O5, V+5 for its ionic counterparts) and fibroblast senescence are associated with pulmonary fibrosis, but whether V+5 causes fibroblast senescence remains unknown. We found in a dose-response study that 2-40 μM V+5 caused human lung fibroblasts (HLF) senescence with increased senescence-associated β-galactosidase activity and p16 expression, while cell death occurred at higher concentration (LC50, 82 μM V+5). Notably, measures of reactive oxygen species (ROS) production with fluorescence probes showed no association of ROS with V+5-dependent senescence. Preloading catalase (polyethylene-conjugated), a H2O2 scavenger, did not alleviate the cellular senescence induced by V+5. Analyses of the cellular glutathione (GSH) system showed that V+5 oxidized GSH, increased GSH biosynthesis, stimulated cellular GSH efflux and increased protein S-glutathionylation, and addition of N-acetyl cysteine inhibited V+5-elevated p16 expression, suggesting that thiol oxidation mediates V+5-caused senescence. Moreover, strong correlations between GSSG/GSH redox potential (Eh), protein S-glutathionylation, and cellular senescence (R2 > 0.99, p < 0.05) were present in V+5-treated cells. Studies with cell-free and enzyme-free solutions showed that V+5 directly oxidized GSH with formation of V+4 and GSSG in the absence of O2. Analyses of V+5 and V+4 in HLF and culture media showed that V+5 was reduced to V+4 in cells and that a stable V+4/V+5 ratio was rapidly achieved in extracellular media, indicating ongoing release of V+4 and reoxidation to V+5. Together, the results show that V+5-dependent fibroblast senescence is associated with a cellular/extracellular redox cycling mechanism involving the GSH system and occurring under conditions that do not cause cell death. These results establish a mechanism by which environmental vanadium from food, dietary supplements or drinking water, can cause or contribute to lung fibrosis in the absence of high-level occupational exposures and cytotoxic cell death.
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Affiliation(s)
- Xiaojia He
- Division of Pulmonary, Allergy and Critical Care Medicine, Emory University, Atlanta, GA, 30322, USA
| | - Zachery R Jarrell
- Division of Pulmonary, Allergy and Critical Care Medicine, Emory University, Atlanta, GA, 30322, USA
| | - Yongliang Liang
- Division of Pulmonary, Allergy and Critical Care Medicine, Emory University, Atlanta, GA, 30322, USA
| | - Matthew Ryan Smith
- Division of Pulmonary, Allergy and Critical Care Medicine, Emory University, Atlanta, GA, 30322, USA
| | - Michael L Orr
- Division of Pulmonary, Allergy and Critical Care Medicine, Emory University, Atlanta, GA, 30322, USA
| | - Lucian Marts
- Division of Pulmonary, Allergy and Critical Care Medicine, Emory University, Atlanta, GA, 30322, USA
| | - Young-Mi Go
- Division of Pulmonary, Allergy and Critical Care Medicine, Emory University, Atlanta, GA, 30322, USA.
| | - Dean P Jones
- Division of Pulmonary, Allergy and Critical Care Medicine, Emory University, Atlanta, GA, 30322, USA.
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Waidyanatha S, Weber FX, Fallacara DM, Harrington JM, Levine K, Robinson VG, Sparrow BR, Stout MD, Fernando R, Hooth MJ, Xie G, Roberts GK. Systemic exposure and urinary excretion of vanadium following perinatal subchronic exposure to vanadyl sulfate and sodium meta vanadate via drinking water. Toxicol Lett 2022; 360:53-61. [PMID: 35331842 PMCID: PMC9036617 DOI: 10.1016/j.toxlet.2022.03.004] [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: 11/28/2021] [Revised: 02/17/2022] [Accepted: 03/17/2022] [Indexed: 11/19/2022]
Abstract
Vanadium is a ubiquitous environmental contaminant although there are limited data to assess potential adverse human health impact following oral exposure. In support of studies investigating the subchronic toxicity of vanadyl sulfate (V4+) and sodium metavanadate (V5+) following perinatal exposure via drinking water in male and female rats, we have determined the internal exposure and urinary excretion of total vanadium at the end of study. Water consumption decreased with increasing exposure concentration following exposure to both compounds. Plasma and urine vanadium concentration normalized to total vanadium consumed per day increased with the exposure concentration of vanadyl sulfate and sodium metavanadate suggesting absorption increased as the exposure concentration increased. Additionally, females had higher concentrations than males (in plasma only for vanadyl sulfate exposure). Animals exposed to sodium metavanadate had up to 3-fold higher vanadium concentration in plasma and urine compared to vanadyl sulfate exposed animals, when normalized to total vanadium consumed per day, demonstrating differential absorption, distribution, metabolism, and excretion properties between V5+ and V4+ compounds. These data will aid in the interpretation of animal toxicity data of V4+ and V5+ compounds and determine the relevance of animal toxicity findings to human exposures.
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Affiliation(s)
- Suramya Waidyanatha
- Division of the National Toxicology Program, NIEHS, Research Triangle Park, NC, United States.
| | - Frank X Weber
- RTI International, Research Triangle Park, NC, United States
| | | | | | - Keith Levine
- RTI International, Research Triangle Park, NC, United States
| | - Veronica G Robinson
- Division of the National Toxicology Program, NIEHS, Research Triangle Park, NC, United States
| | | | - Matthew D Stout
- Division of the National Toxicology Program, NIEHS, Research Triangle Park, NC, United States
| | - Reshan Fernando
- RTI International, Research Triangle Park, NC, United States
| | - Michelle J Hooth
- Division of the National Toxicology Program, NIEHS, Research Triangle Park, NC, United States
| | - Guanhua Xie
- Social and Scientific Systems, Durham, NC, United States
| | - Georgia K Roberts
- Division of the National Toxicology Program, NIEHS, Research Triangle Park, NC, United States
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Zhang H, Zhang B, Gao Y, Wang Y, Lu J, Chen J, Chen D, Deng Q. The role of available phosphorous in vanadate decontamination by soil indigenous microbial consortia. Environ Pollut 2021; 289:117839. [PMID: 34340179 DOI: 10.1016/j.envpol.2021.117839] [Citation(s) in RCA: 1] [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: 04/17/2021] [Revised: 06/14/2021] [Accepted: 07/21/2021] [Indexed: 06/13/2023]
Abstract
Indigenous microbial consortia are closely associated with soil inherent components including nutrients and minerals. Although indigenous microbial consortia present great prospects for bioremediation of vanadate [V(V)] contaminated soil, influences of some key components, such as available phosphorus (AP), on V(V) biodetoxification are poorly understood. In this study, surface soils sampled from five representative vanadium smelter sites were employed as inocula without pretreatment. V(V) removal efficiency ranged from 81.7 ± 1.4% to 99.5 ± 0.2% in batch experiment, and the maximum V(V) removal rates were positively correlated with AP contents. Long-term V(V) removal was achieved under fluctuant hydrodynamic and hydrochemical conditions in column experiment. Geobacter and Bacillus, which were found in both original soils and bioreactors, catalytically reduced V(V) to insoluble tetravalent vanadium. Phosphate-solubilizing bacterium affiliated to Gemmatimonadaceae were also identified abundantly. Microbial functional characterization indicated the enrichment of phosphate ABC transporter, which could accelerate V(V) transfer into intercellular space for efficient reduction due to the structural similarity of V(V) and phosphate. This study reveals the critical role of AP in microbial V(V) decontamination and provides promising strategy for in situ bioremediation of V(V) polluted soil.
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Affiliation(s)
- Han Zhang
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, PR China
| | - Baogang Zhang
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, PR China.
| | - Yueqi Gao
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, PR China
| | - Yu Wang
- School of Engineering and Technology, China University of Geosciences (Beijing), Beijing, 100083, PR China
| | - Jianping Lu
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, PR China
| | - Junlin Chen
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, PR China
| | - Dandan Chen
- School of Biological and Chemical Engineering, Panzhihua University, Panzhihua, 617000, PR China
| | - Qingling Deng
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, PR China
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Gogoi H, Zhang R, Matusik J, Leiviskä T, Rämö J, Tanskanen J. Vanadium removal by cationized sawdust produced through iodomethane quaternization of triethanolamine grafted raw material. Chemosphere 2021; 278:130445. [PMID: 33838423 DOI: 10.1016/j.chemosphere.2021.130445] [Citation(s) in RCA: 3] [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] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 03/05/2021] [Accepted: 03/28/2021] [Indexed: 05/09/2023]
Abstract
In this study, two-step surface modification of sawdust using triethanolamine (at 180 °C) and iodomethane (at 42 °C) was performed to produce a novel quaternized biosorbent, TEA-I-SD. The characterization studies revealed significant morphological changes in the sawdust and successful quaternization with a nitrogen content of 5.75%. The highest vanadium removal (96.2%) was achieved at pH 4 (dosage 1 g/L, initial vanadium concentration 19.1 mg/L). Equilibrium was achieved within 8 h of contact time and the adsorption kinetics were well fitted with the pseudo-second-order model. Both film diffusion and intra-particle diffusion contributed to the adsorption process, while the latter was the rate-limiting step. The maximum vanadium adsorption capacity of TEA-I-SD (35.0 mg/g, pH 4) was close to the theoretical value obtained from the Langmuir model. The best fit was achieved with the Redlich-Peterson model, exhibiting a monolayer adsorption phenomenon. Tests with real mine water containing 11 mg/L of vanadium also confirmed its high removal (91.3%, dosage 1 g/L) using TEA-I-SD at pH 4. The TEA-I-SD could be reused three times without significant capacity loss after regeneration, although the desorption efficiency was rather low (synthetic solution: 38.5-40.5% and mine water: 26.2-43.1%).
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Affiliation(s)
- Harshita Gogoi
- Chemical Process Engineering, P.O. Box 4300, 90014, University of Oulu, Oulu, Finland
| | - Ruichi Zhang
- Chemical Process Engineering, P.O. Box 4300, 90014, University of Oulu, Oulu, Finland
| | - Jakub Matusik
- Department of Mineralogy, Petrography and Geochemistry, Faculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059, Krakow, Poland
| | - Tiina Leiviskä
- Chemical Process Engineering, P.O. Box 4300, 90014, University of Oulu, Oulu, Finland.
| | - Jaakko Rämö
- Chemical Process Engineering, P.O. Box 4300, 90014, University of Oulu, Oulu, Finland
| | - Juha Tanskanen
- Chemical Process Engineering, P.O. Box 4300, 90014, University of Oulu, Oulu, Finland
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11
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Singha M, Gupta R. Transport properties of ZnV 2O 4and its correlation to the doping at the cationic sites. J Phys Condens Matter 2021; 33:375701. [PMID: 34192687 DOI: 10.1088/1361-648x/ac101d] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 06/30/2021] [Indexed: 06/13/2023]
Abstract
We investigate the effect of Fe and Cr doping at Zn and V sites, respectively, on the electrical transport behavior of polycrystalline spinel ZnV2O4. The resistivity studies as a function of temperature reveal the presence of two different transport mechanisms: Arrhenius conduction (170-300 K) and Mott variable range hopping conduction (VRH) (80-170 K). The results also show that Fe doping at Zn sites has a pronounced effect on the electrical transport property together with the V-V distance, accompanied by a decreasing magnetic transition temperature,TN. Cr doping, on the other hand, shows a contrasting Arrhenius transport behavior with decreasing V-V distance as well as a decreasingTN. In the VRH transport regime, a systematic variation of the values of the Mott parameters due to the change in the localization length along the V-V chains is observed. Further, x-ray Photoelectron spectroscopy studies supporting the stabilization of the doped cation phases are presented in this paper.
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Affiliation(s)
| | - Rajeev Gupta
- Materials Science Programme, IIT Kanpur 208016, India
- Department of Physics, IIT Kanpur 208016, India
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Nishiyama Y, Morita A, Wang B, Sakai T, Ramadhani D, Satoh H, Tanaka K, Sasatani M, Ochi S, Tominaga M, Ikushima H, Ueno J, Nenoi M, Aoki S. Evaluation of sodium ortho vanadate as a radioprotective agent under total-body irradiation and partial-body irradiation conditions in mice. Int J Radiat Biol 2021; 97:1241-1251. [PMID: 34125648 DOI: 10.1080/09553002.2021.1941377] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
PURPOSE Our previous study indicated that sodium orthovanadate (vanadate), a strong inhibitor of p53, effectively suppressed the lethality from the hematopoietic (HP) and gastrointestinal (GI) syndromes after 12 Gy total-body irradiation (TBI) in mice. This conclusion, however, was inconsistent with the fact that p53 plays a radioprotective role in the intestinal epithelium. The death after TBI of around 12 Gy was attributed to a combined effect of HP and GI syndromes. To verify the effect from prophylactic administration of p53 inhibitor on protection of HP and GI syndromes, in this study, the radioprotective effects from vanadate were investigated in TBI and lower half-body irradiation (partial-body irradiation: PBI) mouse models. METHODS Female ICR mice were given a single injection of vanadate or vehicle, followed by a lethal dose of TBI or PBI. Radioprotective effects of vanadate against the irradiations were evaluated by analyzing survival rate, body weight, hematopoietic parameters, and histological changes in the bone marrow and intestinal epithelium. RESULTS TBI-induced HP syndrome was effectively suppressed by vanadate treatment. After TBI, the vanadate-treated mice retained better bone marrow cellularity and showed markedly higher survival rate compared to the vehicle-treated animals. In contrast, vanadate did not relieve loss of intestinal crypts and failed to rescue mice from GI death after PBI. CONCLUSION Vanadate is a p53 inhibitor that has been shown to be beneficial as a radiation protective agent against HP but was not effective in protecting against acute GI radiation injury.
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Affiliation(s)
- Yuichi Nishiyama
- Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Akinori Morita
- Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Bing Wang
- National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Takuma Sakai
- Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Dwi Ramadhani
- National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan.,Center for Radiation Safety Technology and Metrology, National Nuclear Energy Agency of Indonesia, Jakarta, Indonesia
| | - Hidetoshi Satoh
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Kaoru Tanaka
- National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Megumi Sasatani
- Research Center for Radiation Genome Medicine, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - Shintaro Ochi
- Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Masahide Tominaga
- Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Hitoshi Ikushima
- Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Junji Ueno
- Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Mitsuru Nenoi
- National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Shin Aoki
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
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Scior T, Abdallah HH, Mustafa SFZ, Guevara-García JA, Rehder D. Are vanadium complexes druggable against the main protease M pro of SARS-CoV-2? - A computational approach. Inorganica Chim Acta 2021; 519:120287. [PMID: 33589845 PMCID: PMC7875704 DOI: 10.1016/j.ica.2021.120287] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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: 10/24/2020] [Revised: 01/30/2021] [Accepted: 02/02/2021] [Indexed: 12/16/2022]
Abstract
In silico techniques helped explore the binding capacities of the SARS-CoV-2 main protease (Mpro) for a series of metalloorganic compounds. Along with small size vanadium complexes a vanadium-containing derivative of the peptide-like inhibitor N3 (N-[(5-methylisoxazol-3-yl)carbonyl]alanyl-l-valyl-N1-((1R,2Z)-4-(benzyloxy)-4-oxo-1-{[(3R)-2-oxopyrrolidin-3-yl] methyl }but-2-enyl)-l-leucinamide) was designed from the crystal structure with PDB entry code 6LU7. On theoretical grounds our consensus docking studies evaluated the binding affinities at the hitherto known binding site of Chymotrypsin-like protease (3CLpro) of SARS-CoV-2 for existing and designed vanadium complexes. This main virus protease (Mpro) has a Cys-His dyad at the catalytic site that is characteristic of metal-dependent or metal-inhibited hydrolases. Mpro was compared to the human protein-tyrosine phosphatase 1B (hPTP1B) with a comparable catalytic dyad. HPTP1B is a key regulator at an early stage in the signalling cascade of the insulin hormone for glucose uptake into cells. The vanadium-ligand binding site of hPTP1B is located in a larger groove on the surface of Mpro. Vanadium constitutes a well-known phosphate analogue. Hence, its study offers possibilities to design promising vanadium-containing binders to SARS-CoV-2. Given the favourable physicochemical properties of vanadium nuclei, such organic vanadium complexes could become drugs not only for pharmacotherapy but also diagnostic tools for early infection detection in patients. This work presents the in silico design of a potential lead vanadium compound. It was tested along with 20 other vanadium-containing complexes from the literature in a virtual screening test by docking to inhibit Mpro of SARS-CoV-2.
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Affiliation(s)
- Thomas Scior
- Departamento de Farmacia, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla. 72000 Puebla, Pue., Mexico,Corresponding author
| | - Hassan H. Abdallah
- Chemistry Department, College of Education, Salahaddin University Erbil, 44001 Erbil, Iraq
| | | | - José Antonio Guevara-García
- Facultad de Ciencias Básicas, Campus Ingeniería y Tecnología, Universidad Autónoma de Tlaxcala, 90401 Apizaco, Tlax., Mexico
| | - Dieter Rehder
- Chemistry Department, University of Hamburg, D-22087 Hamburg, Germany
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He C, Zhang B, Lu J, Qiu R. A newly discovered function of nitrate reductase in chemoautotrophic vanadate transformation by natural mackinawite in aquifer. Water Res 2021; 189:116664. [PMID: 33249309 DOI: 10.1016/j.watres.2020.116664] [Citation(s) in RCA: 70] [Impact Index Per Article: 23.3] [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: 09/21/2020] [Revised: 11/16/2020] [Accepted: 11/20/2020] [Indexed: 06/12/2023]
Abstract
Mackinawite (FeS), a widely-distributed natural reducing mineral, can donate electron for various (bio)processes. However, little is known about mackinawite-driven chemoautotrophic bioreduction of toxic vanadate [V(V)] in aquifer. This study demonstrates that V(V) is successfully bioreduced by mackinawite under anaerobic condition via 150-d operation of constructed aquifer. Complete V(V) removal was achieved at the initial concentration of 10 mg/L and flow rate of 0.125 mL/min. Fluctuant hydrochemistry and hydrodynamics affected V(V) removal performance. Biotic activity was identified as the major contribution to V(V) transformation (76.4 ± 1.01%). Chemoautotrophic genera (e.g., Thiobacillus) could oxidize FeS coupled to direct V(V) reduction independently. Heterotrophic V(V) reducers (e.g., Pseudomonas and Spirochaeta) could also achieve V(V) detoxification by utilizing metabolic intermediates synthesized by autotrophic Fe(II) oxidizers (e.g., Thiobacillus) and S(-II) oxidizing genera (e.g., Sulfuricurvum). Gene abundance and enzymatic activity tests confirmed that nitrate reductase gene napA functioned crucially in chemoautotrophic V(V) reduction by Fe(II) and S(-II) donating electron. V(V) was reduced to insoluble V(IV) while elements in mackinawite were oxidized to Fe(III) and SO42-. This study reveals the coupling of iron, sulfur and vanadium in biogeochemical cycling, and offers a promising strategy for remediation of V(V)-polluted aquifer.
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Affiliation(s)
- Chao He
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, PR China
| | - Baogang Zhang
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, PR China.
| | - Jianping Lu
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, PR China
| | - Rui Qiu
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, PR China
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Dabizha A, Bahr C, Kersten M. Predicting breakthrough of vanadium in fixed-bed absorbent columns with complex groundwater chemistries: A multi-component granular ferric hydroxide- vanadate-arsenate-phosphate-silicic acid system. Water Res X 2020; 9:100061. [PMID: 32817931 PMCID: PMC7426449 DOI: 10.1016/j.wroa.2020.100061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 07/09/2020] [Accepted: 08/03/2020] [Indexed: 06/11/2023]
Abstract
Granular ferric hydroxide (GFH) is often used for fixed bed adsorbent (FBA) columns in groundwater purification units around the world to remove arsenate contaminations. Groundwater can contain also other toxic (e.g., antimonite and vanadate) and non-toxic oxo-anions (phosphate and silicic acid) that are known to affect FBA lifetimes. Therefore, understanding the breakthrough of toxic compounds intended for removal by FBA is essential to their design, and is important to predict accurately breakthrough curves (BTCs) for FBAs in waterworks to plan future operating costs. Rapid small-scale column tests (RSCCT) and pilot-scale FBA were used to simulate vanadate BTCs for complex groundwater chemistries. The BTCs were simulated successfully using a homogeneous surface diffusion model (HSDM) combining equilibrium chemical adsorption and kinetic mass transfer. Adsorption parameters for various groundwater compositions were predicted using the CD-MUSIC surface complexation model, which was set up for the first time for akaganéite-based granular ferric hydroxide with a competitive multi-solute system. The results indicated that V(V) is less prone to competitive adsorption effects, and use of the homogeneous surface diffusion model to predict the BTCs requires then the kinetic mass transfer Biot number to be used as the only fitting parameter. On the other hand, a concentration overshoot could be observed for the two weaker absorbed oxo-anions arsenate and phosphate because of displacement by the vanadate. Results of pilot scale test column BTCs of vanadate for three waterworks with different groundwater compositions could be favorably extrapolated with a unique Freundlich constant kF of 3.2 derived on basis of the multi-solute CD-MUSIC model, and a unique Biot number of 37 fixed for all three different test sites.
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Affiliation(s)
- Anna Dabizha
- Geosciences Institute, Johannes Gutenberg-University, Becherweg 21, Mainz, 55099, Germany
| | - Carsten Bahr
- GEH Wasserchemie GmbH & Co. KG, Adolf-Köhne-Straße 4, Osnabrück, 49090, Germany
| | - Michael Kersten
- Geosciences Institute, Johannes Gutenberg-University, Becherweg 21, Mainz, 55099, Germany
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Shi J, Zhang B, Cheng Y, Peng K. Microbial vanadate reduction coupled to co-metabolic phenanthrene biodegradation in groundwater. Water Res 2020; 186:116354. [PMID: 32882455 DOI: 10.1016/j.watres.2020.116354] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [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: 06/23/2020] [Revised: 08/19/2020] [Accepted: 08/28/2020] [Indexed: 05/13/2023]
Abstract
Vanadate [V(V)] and phenanthrene (PHE) commonly coexist in groundwater aquifer, posing potential threats to ecological environment and public health. However, little is known about the complicated biogeochemical processes involving microbial V(V) reduction coupled with co-metabolic PHE biodegradation. Herein we demonstrated that synchronous removal of V(V) and PHE could be realized under anaerobic condition. Complete V(V) removal and PHE degradation efficiency of 82.0 ± 0.8% were achieved in 7-d operation in batch experiment. 250-d continuous column experiment implied that hydrochemical condition affected V(V) and PHE removals. V(V) was reduced to insoluble vanadium (IV) and PHE was degraded into small molecule organics (e.g. salicylic acid). Geobacter and Acetobacterium used methanol and intermediates from PHE degradation as electron donors for V(V) reduction. PHE was decomposed by Mycobacterium and Clostridium with methanol as co-metabolic substrate and V(V) as electron acceptor. Genes encoding proteins for V(V) reduction (omcA, omcB and mtrC) and PHE degradation (phnAc) were upregulated. Cytochrome c and nicotinamide adenine dinucleotide promoted electron transfer for V(V) and PHE detoxification. Extracellular polymeric substances could bind V(V) and improve the bioavailability of PHE. Our findings provide a robust strategy for remediation of V(V) and PHE co-contaminated groundwater.
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Affiliation(s)
- Jiaxin Shi
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing 100083, P. R. China
| | - Baogang Zhang
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing 100083, P. R. China.
| | - Yutong Cheng
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing 100083, P. R. China
| | - Kejian Peng
- Hunan Research Academy of Environmental Sciences, Changsha 410004, P. R. China
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17
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Hong BV, Lee JH, Rice RH. Off-target effects of protein tyrosine phosphatase inhibitors on oncostatin M-treated human epidermal keratinocytes: the phosphatase targeting STAT1 remains unknown. PeerJ 2020; 8:e9504. [PMID: 32864202 PMCID: PMC7430265 DOI: 10.7717/peerj.9504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 02/24/2020] [Accepted: 06/17/2020] [Indexed: 12/11/2022] Open
Abstract
Cytokine signaling in the epidermis has an important role in maintaining barrier function and is perturbed in pathological conditions. Environmental exposures, such as to metal compounds, are of interest for their potential contribution to skin disease. Present work explores the possibility that vanadate is a more effective protein tyrosine phosphatase inhibitor in human keratinocytes than previously observed in fibroblasts. It focuses on the state of phosphorylation of signal transducer and activator of transcription 1 (STAT1) on tyrosine 701 upon treatment of cultured human keratinocytes with the cytokine oncostatin M, a cutaneous inflammatory mediator that is highly effective in suppressing several differentiation markers and in preserving proliferative potential of keratinocytes. Exposure to sodium vanadate in the medium greatly prolonged the phosphorylation of STAT1, but only at high concentration (>30 µM). Inhibitors of protein tyrosine phosphatases known to dephosphorylate STAT1 (SHP2, TCPTP, PTP1B) were ineffective in mimicking the action of vanadate. The irreversible protein tyrosine phosphatase inhibitor phenyl vinyl sulfonate alone induced STAT1 phosphorylation and appeared to induce its limited cleavage. It also inhibited cross-linked envelope formation, a characteristic step of keratinocyte terminal differentiation, likely due to its reaction with the active site cysteine of keratinocyte transglutaminase. Thus, the key protein tyrosine phosphatase responsible for STAT1 dephosphorylation remains to be identified, and an off-target effect of a potential inhibitor was revealed.
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Affiliation(s)
- Brian V Hong
- Department of Environmental Toxicology and Forensic Science Program, University of California, Davis, CA, United States of America
| | - Ji H Lee
- Department of Environmental Toxicology and Forensic Science Program, University of California, Davis, CA, United States of America
| | - Robert H Rice
- Department of Environmental Toxicology and Forensic Science Program, University of California, Davis, CA, United States of America
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18
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Zhang B, Jiang Y, Zuo K, He C, Dai Y, Ren ZJ. Microbial vanadate and nitrate reductions coupled with anaerobic methane oxidation in groundwater. J Hazard Mater 2020; 382:121228. [PMID: 31561197 DOI: 10.1016/j.jhazmat.2019.121228] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [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: 07/28/2019] [Revised: 09/11/2019] [Accepted: 09/12/2019] [Indexed: 05/13/2023]
Abstract
Vanadate contaminant in groundwater receives increasing attentions, but little is known on its biogeochemical transformation with gaseous electron donors. This study investigated bio-reduction of vanadate coupled with anaerobic methane oxidation and its relationship with nitrate reduction. Results showed 95.8 ± 3.1% of 1 mM vanadate was removed within 7 days using methane as the sole electron donor. Tetravalent vanadium compounds were the main reduction products, which precipitated naturally in groundwater environment. The introduction of nitrate inhibited vanadate reduction, though both were reduced in parallel. Accumulations of volatile fatty acids (VFAs) were observed from methane oxidation. Preliminary microbial community structure and metabolite analyses indicated that vanadate was likely reduced via Methylomonas coupled with methane oxidation or through synergistic relationships between methane oxidizing bacteria and heterotrophic vanadate reducers with VFAs served as the intermediates.
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Affiliation(s)
- Baogang Zhang
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, PR China; Department of Civil, Environmental, and Architectural Engineering, University of Colorado Boulder, Boulder, Co, 80309, United States.
| | - Yufeng Jiang
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, PR China
| | - Kuichang Zuo
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, PR China
| | - Chao He
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, PR China
| | - Yunrong Dai
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, PR China
| | - Zhiyong Jason Ren
- Department of Civil, Environmental, and Architectural Engineering, University of Colorado Boulder, Boulder, Co, 80309, United States; Department of Civil and Environmental Engineering, Princeton University, NJ, 08540, United States.
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Šimuneková M, Schwendt P, Gyepes R, Krivosudský L. Heterometallic Copper-Vanadium Compounds: Crystal Structures of Polymers [Cu( im) 4(V 2O 4( mand) 2)] n and [Cu( im) 4(V 2O 4(( S)- mand) 2)] n ·2 nH 2O ( im = imidazole, mand = mandelato 2-). J Chem Crystallogr 2019; 50:373-380. [PMID: 33184555 PMCID: PMC7603452 DOI: 10.1007/s10870-019-00810-8] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 10/05/2019] [Indexed: 06/11/2023]
Abstract
ABSTRACT Two new 1D polymeric heterometallic copper-vanadium compounds were prepared. The polymers are constructed from [Cu(im)4]2+ cations that are coordinated to two terminal oxido ligands of [V2O4(mand)2]2- anions. The stronger coordination in [Cu(im)4V2O4(mand)2] n (1) that contains the racemic mandelato ligand is manifested by a shorter Cu‒O bond distance 2.4095(12) Å, while the weaker interaction in [Cu(im)4(V2O4((S)-mand)2)] n ·2nH2O (2) is exhibited by Cu‒O bond distances 2.4547(16) Å and 2.5413(16) Å. The vanadate anion in compound 2 carries only the (S)-enantiomer of the initial mandelic acid and differs from the anion in 1 in parallel cis orientation of the phenyl groups of the mandelato ligand. FT-IR spectroscopy was used for the confirmation of the coordination mode of mandelato ligand. Strong bands corresponding to the vibrations of carboxyl groups can be observed around 1650 and at 1344 cm-1. The stretching vibration of deprotonated hydroxyl group in the mandelato ligand occurs at 1045 and 1065 cm-1 for 1 and 2, respectively. In addition, the very strong, characteristic band corresponding to ν(V=O) vibration can be observed at 931 cm-1 for 1 and 925 cm-1 for 2, as well as in Raman spectrum. GRAPHIC ABSTRACT The polymeric structures of two new vanadium-copper heterometallic complexes are constructed from [Cu(imidazole)4]2+ cations that are coordinated to two terminal oxido ligands of [V2O4(mandelato)2]2- anions with different orientation of the phenyl groups depending on the chirality of the mandelato ligand.
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Affiliation(s)
- Mária Šimuneková
- Comenius University in Bratislava, Faculty of Natural Sciences, Department of Inorganic Chemistry, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia
| | - Peter Schwendt
- Comenius University in Bratislava, Faculty of Natural Sciences, Department of Inorganic Chemistry, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia
| | - Róbert Gyepes
- Charles University, Faculty of Science, Department of Inorganic Chemistry, Hlavova 2030, 128 00 Prague, Czech Republic
| | - Lukáš Krivosudský
- Comenius University in Bratislava, Faculty of Natural Sciences, Department of Inorganic Chemistry, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstraße 14, 1090 Vienna, Austria
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Bortoli S, Collinet M, Desbuquois B. Vanadate inhibits transcription of the rat insulin receptor gene via a proximal sequence of the 5'flanking region. Biochim Open 2018; 7:26-32. [PMID: 30416963 PMCID: PMC6205930 DOI: 10.1016/j.biopen.2018.09.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 09/30/2018] [Indexed: 11/16/2022]
Abstract
Vanadate, a protein tyrosine phosphatase inhibitor which elicits insulin-like effects, has previously been shown to inhibit expression of the insulin receptor gene at the transcriptional level in rat hepatoma cells. In an attempt to identify the DNA sequence and transcription factors potentially involved in this effect, a fragment of the proximal 5'flanking region of the IR gene (-1143/-252 upstream the ATG codon) has been cloned and functionally characterized. RNase protection allowed the identification of several transcription start sites in the conserved region of the gene, among which two major sites at -455 and -396. Upon fusion to the luciferase gene and transient transfection into hepatoma cells, the -1143/-252 fragment showed promoter activity. This was unaffected by deletion of the -1143/-761 sequence, but markedly decreased (90%) by additional deletion of the -760/-465 sequence. Treatment of hepatoma cells with vanadate led to a dose-dependent decrease in promoter activity of the 1143/-252, -760/-252 and -464/-252 constructs (change relative to untreated cells, 40, 55 and 23% at 125 μM, and 70, 85 and 62% at 250 μM, respectively). These data suggest that although the entire DNA sequence upstream the transcription start sites is probably involved in vanadate-induced inhibition, the short sequence downstream of position -464 and is sufficient for inhibition. Potential targets of vanadate are the transcription factors FoxO1 and HMGA1, two downstream targets of the insulin signaling pathway which have been shown to mediate the inhibitory effect of insulin on IR gene expression.
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Key Words
- C/EBPβ, C/CAAT/enhancer binding protein β
- FoxO1, Forkhead box protein O1
- Gene transcription
- HMGA1, high mobility group A1 protein
- HNF4, hepatocyte nuclear factor 4
- Hepatoma cells
- IGFBP-1, insulin-like growth factor binding protein 1
- IR, insulin receptor
- Insulin receptor
- Liver
- PEPCK, phosphoenolpyruvate carboxykinase
- PI3K, phosphatidyl inositol 3-kinase
- Rat
- SINE, short interspersed nuclear element
- STZ, streptozotocin
- Sp1, specificity protein 1
- TCF7L2, T-cell specific transcription factor 7-like 2
- Vanadate
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Affiliation(s)
- Sylvie Bortoli
- INSERM UMR 1124, UFR des Sciences Fondamentales et Biomédicales, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Martine Collinet
- INSERM UMR 1124, UFR des Sciences Fondamentales et Biomédicales, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Bernard Desbuquois
- INSERM U1016, Institut Cochin, CNRS UMR8104, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
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Mukhopadhyay AG, Dey CS. Effect of inhibition of axonemal dynein ATPases on the regulation of flagellar and ciliary waveforms in Leishmania parasites. Mol Biochem Parasitol 2018; 225:27-37. [PMID: 30145318 DOI: 10.1016/j.molbiopara.2018.08.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 07/21/2018] [Accepted: 08/06/2018] [Indexed: 11/18/2022]
Abstract
Trypanosomes of the genus Leishmania swim by undulating motions of a single flagellum driven by axonemal dynein ATPases, essential for parasite survival and infectivity. The flagellum possesses two waveforms; flagellar (tip-to-base) responsible for forward movements and ciliary (base-to-tip) possibly responsible for reorientation in response to changes in surroundings. However, the role of dyneins in regulating the two waveforms remains unknown. Moreover, the unpredictable nature of the parasite ciliary waveform makes it difficult to study. We have previously reported a detergent-extracted, ATP-reactivated model ideal for investigating flagellar motility regulation in Leishmania that allows one to generate reactivated Leishmania flagella with constitutively beating ciliary waves in presence of cyclic-AMP. Here, using three dynein inhibitors [erythro-9-(2-hydroxy-3-nonyl) adenine, ciliobrevin A and vanadate] we investigated the role of dyneins in regulating the two waveforms of Leishmania. Using high speed videomicroscopy we observed differential inhibition of beat frequencies and waveforms of flagellar and ciliary beats in live (in vivo) and ATP-reactivated (in vitro) parasites. Beat frequency of flagellar waveform was more strongly reduced than ciliary waveform. Surprisingly, inhibition of the ciliary waveform led to an altered phenotype with the distal half of the flagellum paralysed. ATPase assays confirmed that dynein activity of flagellar cells was more strongly inhibited compared to ciliary cells irrespective of the mechanism of inhibition. Possibly the two different waveforms are an outcome of changes in the mechanical properties of axonemal dyneins present at the tip of the flagellum that contains a sliding resistive structure. Our study suggests that dyneins responsible for the two waveforms in Leishmania bear different structural and functional conformations. Moreover, during ciliary beating, there is heterogeneity along the flagellum.
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Affiliation(s)
- Aakash Gautam Mukhopadhyay
- Kusuma School of Biological Sciences, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Chinmoy Sankar Dey
- Kusuma School of Biological Sciences, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
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Harvey CM, O'Toole KH, Allen KN. Crystallization of Liganded Phosphatases in the HAD Superfamily. Methods Enzymol 2018; 607:157-84. [PMID: 30149857 DOI: 10.1016/bs.mie.2018.06.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Phosphotransferases catalyze reactions on chemically diverse molecules in organisms from all domains of life. The haloalkanoate dehalogenase superfamily (HADSF) is a model system for phosphoryl transfer enzymes as members catalyze phosphoester hydrolase, phosphonate hydrolase, and phosphomutase reactions on sugars, lipids, nucleotides, and peptides. Because these reactions are fundamental to essential metabolic transformations, understanding the mechanism and determinants of substrate specificity in the HADSF is critical. Structure/function relationships in the superfamily have also been leveraged in the development of methodologies for the assignment of enzyme function. Enzyme complexes with substrate, product, and analogs of the ground state or intermediate/transition state can be studied via high-resolution macromolecular crystallography to provide insight to the relative location of residues and ligands, as well as associated enzyme conformational states. This knowledge can aid in inhibitor design for phosphohydrolase reactions and target-specific therapeutics. Here we describe experimental approaches to capture liganded X-ray crystallographic structures of HADSF members. A number of these methods can be employed generally, including other families of phosphohydrolases and enzymes catalyzing phosphoryl transfer.
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Eiam-Ong S, Nakchui Y, Chaipipat M, Eiam-Ong S. Vanadate-Induced Renal cAMP and Malondialdehyde Accumulation Suppresses Alpha 1 Sodium Potassium Adenosine Triphosphatase Protein Levels. Toxicol Res 2018; 34:143-150. [PMID: 29686776 PMCID: PMC5903140 DOI: 10.5487/tr.2018.34.2.143] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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: 07/26/2017] [Revised: 01/10/2018] [Accepted: 03/13/2018] [Indexed: 11/25/2022] Open
Abstract
It has been demonstrated that vanadate causes nephrotoxicity. Vanadate inhibits renal sodium potassium adenosine triphosphatase (Na, K-ATPase) activity and this is more pronounced in injured renal tissues. Cardiac cyclic adenosine monophosphate (cAMP) is enhanced by vanadate, while increased cAMP suppresses Na, K-ATPase action in renal tubular cells. There are no in vivo data collectively demonstrating the effect of vanadate on renal cAMP levels; on the abundance of the alpha 1 isoform (α1) of the Na, K-ATPase protein or its cellular localization; or on renal tissue injury. In this study, rats received a normal saline solution or vanadate (5 mg/kg BW) by intraperitoneal injection for 10 days. Levels of vanadium, cAMP, and malondialdehyde (MDA), a marker of lipid peroxidation were measured in renal tissues. Protein abundance and the localization of renal α1-Na, K-ATPase was determined by Western blot and immunohistochemistry, respectively. Renal tissue injury was examined by histological evaluation and renal function was assessed by blood biochemical parameters. Rats treated with vanadate had markedly increased vanadium levels in their plasma, urine, and renal tissues. Vanadate significantly induced renal cAMP and MDA accumulation, whereas the protein level of α1-Na, K-ATPase was suppressed. Vanadate caused renal damage, azotemia, hypokalemia, and hypophosphatemia. Fractional excretions of all studied electrolytes were increased with vanadate administration. These in vivo findings demonstrate that vanadate might suppress renal α1-Na, K-ATPase protein functionally by enhancing cAMP and structurally by augmenting lipid peroxidation.
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Affiliation(s)
- Somchit Eiam-Ong
- Department of Physiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Yuyen Nakchui
- School of Medicine, Walailak University, Nakhonsrithammarat, Thailand
| | - Mookda Chaipipat
- Department of Pathology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Somchai Eiam-Ong
- Division of Nephrology, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
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Machado LESF, Page R, Peti W. 1H, 15N and 13C sequence specific backbone assignment of the vanadate inhibited hematopoietic tyrosine phosphatase. Biomol NMR Assign 2018; 12:5-9. [PMID: 28856606 PMCID: PMC5832517 DOI: 10.1007/s12104-017-9770-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Accepted: 08/28/2017] [Indexed: 06/07/2023]
Abstract
The sequence-specific backbone assignment of hematopoietic protein tyrosine phosphatase (HePTP; PTPN7) in presence of vanadate has been determined, based on triple-resonance experiments using uniformly [13C,15N]-labeled protein. These assignments facilitate further studies of HePTP in the presence of inhibitors to target leukemia and provide further insights into the function of protein tyrosine phosphatases.
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Affiliation(s)
- Luciana E S F Machado
- Department of Molecular Pharmacology, Physiology and Biotechnology, Brown University, Providence, RI, 02912, USA
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, AZ, 85721, USA
| | - Rebecca Page
- Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, Providence, RI, 02912, USA
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, AZ, 85721, USA
| | - Wolfgang Peti
- Department of Molecular Pharmacology, Physiology and Biotechnology, Brown University, Providence, RI, 02912, USA.
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, AZ, 85721, USA.
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25
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Solecka U, Bajda T, Topolska J, Zelek-Pogudz S, Manecki M. Raman and Fourier transform infrared spectroscopic study of pyromorphite-vanadinite solid solutions. Spectrochim Acta A Mol Biomol Spectrosc 2018; 190:96-103. [PMID: 28917163 DOI: 10.1016/j.saa.2017.08.061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 08/24/2017] [Accepted: 08/26/2017] [Indexed: 06/07/2023]
Abstract
Due to the great range of the application fields for apatites, there is a strong need to complete the data set determining the properties of these minerals. In this study, Raman and Infrared spectra of the phases from pyromorphite Pb5(PO4)3Cl - vanadinite Pb5(VO4)3Cl series were investigated. Totally, 9 samples (2 end-members and 7 solid solutions of the series) were synthesized at 25°C and pH=3.5, and analyzed. In the Raman and Infrared spectra of the studied Pb-apatites, the bands typical for the vibrations in the PO4 and the VO4 tetrahedra appeared. The bands attributed to the stretching vibrations (ν1, ν3) occurred in the 1050-910cm-1 and 830-720cm-1 regions, whereas the bending vibrations (ν2, ν4) were visible at the 580-540cm-1, 430-380cm-1 and 370-290cm-1 range. The position of the bands depended on the P/(P+V) ratio in the analyzed solid, since there are differences in the ionic radii and the atomic mass of P5+ and V5+, which affect the bong lengths, bond forces and the banding energies of the substituting tetrahedra. The analysis allowed observing gradual shifts of the bands caused by the replacement of phosphorous with vanadium in the studied phases. The positions and the intensities of selected bands are proposed to serve as a semi-quantitative estimation of the chemical composition of the phases from the pyromorphite - vanadinite series.
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Affiliation(s)
- Urszula Solecka
- AGH - University of Science and Technology, Faculty of Geology, Geophysics and Environment Protection, Department of Mineralogy, Petrography and Geochemistry, Mickiewicza 30 Ave., 30-059 Krakow, Poland.
| | - Tomasz Bajda
- AGH - University of Science and Technology, Faculty of Geology, Geophysics and Environment Protection, Department of Mineralogy, Petrography and Geochemistry, Mickiewicza 30 Ave., 30-059 Krakow, Poland
| | - Justyna Topolska
- AGH - University of Science and Technology, Faculty of Geology, Geophysics and Environment Protection, Department of Mineralogy, Petrography and Geochemistry, Mickiewicza 30 Ave., 30-059 Krakow, Poland
| | - Sylwia Zelek-Pogudz
- AGH - University of Science and Technology, Faculty of Geology, Geophysics and Environment Protection, Department of Mineralogy, Petrography and Geochemistry, Mickiewicza 30 Ave., 30-059 Krakow, Poland
| | - Maciej Manecki
- AGH - University of Science and Technology, Faculty of Geology, Geophysics and Environment Protection, Department of Mineralogy, Petrography and Geochemistry, Mickiewicza 30 Ave., 30-059 Krakow, Poland
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Hill T, Rice RH. DUOX expression in human keratinocytes and bronchial epithelial cells: Influence of vanadate. Toxicol In Vitro 2018; 46:257-264. [PMID: 29031483 PMCID: PMC5683910 DOI: 10.1016/j.tiv.2017.10.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 05/30/2017] [Revised: 09/06/2017] [Accepted: 10/06/2017] [Indexed: 01/10/2023]
Abstract
Dual oxygenases (DUOX) 1 and 2, expressed in many animal tissues, participate in host defense at mucosal surfaces and may have important signaling roles through generation of reactive oxygen. Present work addresses their expression in cultured human epidermal keratinocytes and effects of cytokines and metal/metalloid compounds. Both DUOX1 and 2 were expressed at much higher levels after confluence than in the preconfluent state. Maximal DUOX1 mRNA levels were 50 fold those of DUOX2. DUOX1 and 2 were induced ≈3 fold by interleukin 4, but only DUOX1 was induced by interferon gamma (IFNγ). In human bronchial HBE1 cells, by contrast, interleukin 4 induced only DUOX 1, and IFNγ induced only DUOX2. A survey in the keratinocytes of metal/metalloid compounds showed that arsenite, antimonite, chromate, cadmium, copper, lead and vanadate suppressed DUOX1 levels but did not prevent interleukin 4 stimulation. Effects on DUOX2 were less dramatic, except that vanadate potentiated the stimulation by IFNγ up to 7 fold. The results indicate that epithelial cell types of different tissue origins can differ in their cytokine regulation and that epidermal cells can exhibit striking alterations in response due to certain metal/metalloid exposures.
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Affiliation(s)
- Thomas Hill
- Department of Environmental Toxicology, University of California at Davis, USA
| | - Robert H Rice
- Department of Environmental Toxicology, University of California at Davis, USA.
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Chukova OV, Nedilko SG, Slepets AA, Nedilko SA, Voitenko TA. Synthesis and Properties of the La 1 - x - y Eu y Ca x VO 4 (0 ≤ x, y ≤ 0.2) Compounds. Nanoscale Res Lett 2017; 12:340. [PMID: 28486797 PMCID: PMC5422220 DOI: 10.1186/s11671-017-2116-7] [Citation(s) in RCA: 3] [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] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Accepted: 04/27/2017] [Indexed: 06/07/2023]
Abstract
The La1 - x Ca x VO4 and La1 - x - y Eu y Ca x VO4 (0 ≤ x, y ≤ 0.2) micro/nanosized powders were prepared by aqueous nitrate-citrate sol-gel synthesis. Phase composition of the sample depends on the x and y values. The La0.9Ca0.1VO4 is crystallized in monoclinic structure up to the x = 0.1. The La0.9Eu0.05Ca0.05VO4 sample was also attributed to the monoclinic structure. Increasing concentration of europium and calcium ions in La1 - x - yEu y Ca x VO4 solid solutions leads to the change of the crystal structure, and subsequently, stabilization of the tetragonal phase takes place.The obtained samples were characterized by XRD analysis, SEM microscopy, and IR spectroscopy. Luminescence properties of the synthesized powders were studied. Emission of the La1 - x Ca x VO4 samples is weak and consists of wide bands in the 450-800 nm spectral range. The observed bands at 570 and 630 were ascribed to electron transitions in the distorted VO43- vanadate groups. Emission of the La1 - x - y Eu y Ca x VO4 samples consists of narrow spectral lines in the 550-730 nm spectral range. The lines are caused by the 5D0 → 7FJ electron transitions in the Eu3+ ions. The Ca2+ ions incorporation increases the intensity of the Eu3+ ions luminescence. Structure of the spectra depends on Ca2+ concentration and excitation wave length. The carried out analysis has revealed that Eu3+ ions form at least two different types of emission centers in the La1 - x - y Eu y Ca x VO4 samples. The assumption is made that type I centers are formed by the Eu3+ ions in their regular positions in the crystal lattice, while the type II centers have complex structure and consist of Eu3+ ions, Ca2+ cations, and oxygen vacancies.
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Affiliation(s)
- O. V. Chukova
- Faculty of Physics, Taras Shevchenko National University of Kyiv, 64/13, Volodymyrska Str, 01601 Kyiv, Ukraine
| | - S. G. Nedilko
- Faculty of Physics, Taras Shevchenko National University of Kyiv, 64/13, Volodymyrska Str, 01601 Kyiv, Ukraine
| | - A. A. Slepets
- Faculty of Chemistry, Taras Shevchenko National University of Kyiv, 64/13, Volodymyrska Str, 01601 Kyiv, Ukraine
| | - S. A. Nedilko
- Faculty of Chemistry, Taras Shevchenko National University of Kyiv, 64/13, Volodymyrska Str, 01601 Kyiv, Ukraine
| | - T. A. Voitenko
- Faculty of Chemistry, Taras Shevchenko National University of Kyiv, 64/13, Volodymyrska Str, 01601 Kyiv, Ukraine
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28
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Larsson MA, Hadialhejazi G, Gustafsson JP. Vanadium sorption by mineral soils: Development of a predictive model. Chemosphere 2017; 168:925-932. [PMID: 27816283 DOI: 10.1016/j.chemosphere.2016.10.117] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [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: 09/06/2016] [Revised: 10/25/2016] [Accepted: 10/27/2016] [Indexed: 05/11/2023]
Abstract
The toxicity of vanadium in soils depends on its sorption to soil components. Here we studied the vanadate(V) sorption properties of 26 mineral soils. The data were used to optimise parameters for a Freundlich equation with a pH term. Vanadium K-edge XANES spectroscopy for three selected soils confirmed that the added vanadate(V) had accumulated mostly as adsorbed vanadate(V) on Fe and Al hydrous oxides, with only minor contributions from organically complexed vanadium(IV). Data on pH-dependent V solubility for seven soils showed that on average 0.36 H+ accompanied each V during adsorption and desorption. The resulting model provided reasonable fits to the V sorption data, with r2 > 0.99 for 20 of 26 soils. The observed KdS value, i.e. the ratio of total to dissolved V, was strongly dependent on V addition and soil; it varied between 3 and 4 orders of magnitude. The model was used to calculate the Freundlich sorption strength (FSS), i.e. the amount of V sorbed at [V] = 2.5 mg L-1, in the concentration range of observed plant toxicities. A close relationship between FSS and oxalate-extractable Fe and Al was found (r2 = 0.85) when one acidic soil was removed from the regression. The FSS varied between 27 and 8718 mg V kg-1, showing that the current environmental guidelines can be both under- and overprotective for vanadium.
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Affiliation(s)
- Maja A Larsson
- Department of Soil and Environment, Swedish University of Agricultural Sciences, Box 7014, 750 07, Uppsala, Sweden
| | - Golshid Hadialhejazi
- Division of Land and Water Resources Engineering, KTH Royal Institute of Technology, Teknikringen 76, 100 44, Stockholm, Sweden
| | - Jon Petter Gustafsson
- Department of Soil and Environment, Swedish University of Agricultural Sciences, Box 7014, 750 07, Uppsala, Sweden; Division of Land and Water Resources Engineering, KTH Royal Institute of Technology, Teknikringen 76, 100 44, Stockholm, Sweden.
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Hazard SW, Zwemer CF, Mackay DR, Koduru SV, Ravnic DJ, Ehrlich HP. Topical vanadate enhances the repair of median laparotomy incisions. J Surg Res 2016; 207:102-107. [PMID: 27979464 DOI: 10.1016/j.jss.2016.08.078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 05/11/2016] [Revised: 08/01/2016] [Accepted: 08/24/2016] [Indexed: 11/30/2022]
Abstract
BACKGROUND There are over two million laparotomies performed in the United States each year with an incisional hernia rate between 2% and 11%. A total of 100,000 ventral hernia repairs are undertaken each year with recurrences as high as 50%. MATERIALS AND METHODS Full thickness midline fascia incisions from the xiphoid to the pubic symphysis were made in rats. The fascia and/or muscular layer was sutured closed and a gel with 300 μM of sodium orthovanadate or saline was placed over the suture line with the skin closed over it. On day 10, 1-cm strips from the superior, middle, and inferior regions of the abdominal wall were tested for breaking strength and processed for histology. RESULTS The mean wound breaking strength of vanadate-treated wounds was 18.6 ± 2.7 N compared with 9.4 ± 3.6 N for controls (P < 0.0001). Similar quantities of granulation tissue were deposited in treated and control wounds. Fine green birefringence patterns, characteristic of immature connective tissue, were seen in control samples viewed with polarized light. In contrast, vanadate-treated wounds showed thick yellow-orange birefringence patterns characteristics of more mature connective tissue. Using α-smooth muscle actin immunostaining, myofibroblasts were prominent in control incisions, but few were identified in vanadate-treated incisions. CONCLUSIONS In rat laparotomy wounds, a single application of vanadate increases wound breaking strength, through enhanced connective tissue organization. These combined data suggest topical application of vanadate immediately after fascial closure will increase wound strength, possibly reducing hernia recurrences in the repaired abdominal wall.
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Affiliation(s)
- Sprague W Hazard
- Department of Anesthesia, Penn State Hershey Medical Center, Hershey, Pennsylvania; Department of Biology, Dickinson College, Carlisle, Pennsylvania
| | - Charles F Zwemer
- Department of Biology, Dickinson College, Carlisle, Pennsylvania
| | - Donald R Mackay
- Department of Surgery, Penn State Hershey Medical Center, Hershey, Pennsylvania
| | - Srinivas V Koduru
- Department of Surgery, Penn State Hershey Medical Center, Hershey, Pennsylvania
| | - Dino J Ravnic
- Department of Surgery, Penn State Hershey Medical Center, Hershey, Pennsylvania.
| | - H Paul Ehrlich
- Department of Surgery, Penn State Hershey Medical Center, Hershey, Pennsylvania
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Blumrich EM, Kadam R, Dringen R. The Protein Tyrosine Kinase Inhibitor Tyrphostin 23 Strongly Accelerates Glycolytic Lactate Production in Cultured Primary Astrocytes. Neurochem Res 2016; 41:2607-18. [PMID: 27278759 DOI: 10.1007/s11064-016-1972-3] [Citation(s) in RCA: 5] [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] [Received: 03/01/2016] [Revised: 05/29/2016] [Accepted: 06/01/2016] [Indexed: 02/07/2023]
Abstract
Tyrphostin 23 (T23) is a well-known inhibitor of protein tyrosine kinases. To investigate potential acute effects of T23 on the viability and the glucose metabolism of brain cells, we exposed cultured primary rat astrocytes to T23 for up to 4 h. While the viability and the morphology of the cultured astrocytes were not acutely affected by the presence of T23 in concentrations of up to 300 µM, this compound caused a rapid, time- and concentration-dependent increase in glucose consumption and lactate release. Maximal effects on glycolytic flux were found for incubations with 100 µM T23 for 2 h which doubled both glucose consumption and lactate production. The stimulation of glycolytic flux by T23 was reversible, completely abolished upon removal of the compound and not found in presence of other known inhibitors of endocytosis. Structurally related compounds such as tyrphostin 25 and catechol or modulators of AMP kinase activity did neither affect the basal nor the T23-stimulated lactate production by astrocytes. In contrast, the presence of the phosphatase inhibitor vanadate completely abolished the stimulation by T23 of astrocytic lactate production in a concentration-dependent manner. These data suggest that T23-sensitive phosphorylation/dephosphorylation events are involved in the regulation of astrocytic glycolysis.
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Rehder D. The (biological) speciation of vanadate(V) as revealed by (51)V NMR: A tribute on Lage Pettersson and his work. J Inorg Biochem 2015; 147:25-31. [PMID: 25592749 DOI: 10.1016/j.jinorgbio.2014.12.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Revised: 12/10/2014] [Accepted: 12/10/2014] [Indexed: 11/22/2022]
Abstract
Four decades of research carried out by Lage Pettersson, his group and his coworkers are reviewed, research that has been directed predominantly towards the speciation of vanadate and systems containing, along with vanadate and co-reactants such as phosphate and peroxide, biologically relevant organics. In particular, those organics have been addressed that either are (potential) ligands for vanadate-derived coordination compounds generated at physiological conditions and/or function as constituents in medicinally interesting oxidovanadium compounds. Examples for molecules introduced in the context of the physiological vanadate-ligand interaction include the dipeptides Pro-Ala, Ala-Gly, Ala-His and Ala-Ser, the serum constituents lactate and citrate, and the nucleobases adenosine and uridine. The speciation in the vanadate-picolinate and vanadate-maltol systems is geared towards insulin-enhancing vanadium drugs. The speciation as a function of pH, ionic strength and the concentration of vanadate and the ligand(s) is based on potentiometric and (51)V NMR investigations, a methodical combination that allows reliable access to composition, formation constants and, to some extent, also structural details for the manifold of species present in aqueous media at physiological pH and beyond. The time frame 1971 to 2014 is reviewed, emphasizing the interval 1985 to 2006, and thus focusing on biologically interesting vanadium systems. Figurative representations from the original literature have been included.
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Clark O, Park I, Di Florio A, Cichon AC, Rustin S, Jugov R, Maeshima R, Stoker AW. Oxovanadium-based inhibitors can drive redox-sensitive cytotoxicity in neuroblastoma cells and synergise strongly with buthionine sulfoximine. Cancer Lett 2014; 357:316-327. [PMID: 25444896 DOI: 10.1016/j.canlet.2014.11.039] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [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: 07/02/2014] [Revised: 11/17/2014] [Accepted: 11/18/2014] [Indexed: 12/30/2022]
Abstract
In a wide range of neuroblastoma-derived lines oxovanadium compounds such as bis(maltolato)oxovanadium(IV) (BMOV) are cytotoxic. This is not explained by oxidative stress or inhibition of ion channels. Genotoxicity is unlikely given that a p53 response is absent and p53-mutant lines are also sensitive. Cytotoxicity is inhibited by N-acetyl cysteine and glutathione ester, indicating that BMOV action is sensitive to cytoplasmic redox and thiol status. Significantly, combining BMOV with glutathione synthesis inhibition greatly enhances BMOV-induced cell death. This combination treatment triggers high AKT pathway activation, highlighting the potential functional importance of PTP inhibition by BMOV. AKT activation itself, however, is not required for cytotoxicity. Oxovanadium compounds may thus represent novel leads as p53-independent therapeutics for neuroblastoma.
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Affiliation(s)
- Owen Clark
- Cancer Section, Developmental Biology & Cancer Programme, UCL Institute of Child Health, 30 Guilford Street, London WC1N 1EH, UK
| | - Inhye Park
- Cancer Section, Developmental Biology & Cancer Programme, UCL Institute of Child Health, 30 Guilford Street, London WC1N 1EH, UK
| | - Alessia Di Florio
- Cancer Section, Developmental Biology & Cancer Programme, UCL Institute of Child Health, 30 Guilford Street, London WC1N 1EH, UK
| | - Ann-Christin Cichon
- Cancer Section, Developmental Biology & Cancer Programme, UCL Institute of Child Health, 30 Guilford Street, London WC1N 1EH, UK
| | - Sarah Rustin
- Cancer Section, Developmental Biology & Cancer Programme, UCL Institute of Child Health, 30 Guilford Street, London WC1N 1EH, UK
| | - Roman Jugov
- Cancer Section, Developmental Biology & Cancer Programme, UCL Institute of Child Health, 30 Guilford Street, London WC1N 1EH, UK
| | - Ruhina Maeshima
- Cancer Section, Developmental Biology & Cancer Programme, UCL Institute of Child Health, 30 Guilford Street, London WC1N 1EH, UK
| | - Andrew W Stoker
- Cancer Section, Developmental Biology & Cancer Programme, UCL Institute of Child Health, 30 Guilford Street, London WC1N 1EH, UK.
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Yayama K, Sasahara T, Ohba H, Funasaka A, Okamoto H. Ortho vanadate-induced vasocontraction is mediated by the activation of Rho-kinase through Src-dependent transactivation of epidermal growth factor receptor. Pharmacol Res Perspect 2014; 2:e00039. [PMID: 25505586 PMCID: PMC4184709 DOI: 10.1002/prp2.39] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [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: 12/19/2013] [Revised: 02/25/2014] [Accepted: 02/28/2014] [Indexed: 01/26/2023] Open
Abstract
Orthovanadate (OVA), a protein tyrosine phosphatase (PTPase) inhibitor, exerts contractile effects on smooth muscle in a Rho-kinase-dependent manner, but the precise mechanisms are not elucidated. The aim of this study was to determine the potential roles of Src and epidermal growth factor receptor (EGFR) in the OVA-induced contraction of rat aortas and the phosphorylation of myosin phosphatase target subunit 1 (MYPT1; an index of Rho-kinase activity) in vascular smooth muscle cells (VSMCs). Aortic contraction by OVA was significantly blocked not only by Rho kinase inhibitors Y-27632 [R-[+]-trans-N-[4-pyridyl]-4-[1-aminoethyl]-cyclohexanecarboxamide] and hydroxyfasudil [1-(1-hydroxy-5-isoquinolinesulfonyl)homopiperazine] but also by Src inhibitors PP2 [4-amino-3-(4-chlorophenyl)-1-(t-butyl)-1H-pyrazolo[3,4-d]pyrimidine] and Src inhibitor No. 5 [4-(3′-methoxy-6′-chloro-anilino)-6-methoxy-7(morpholino-3-propoxy)-quinazoline], and the EGFR inhibitors AG1478 [4-(3-chloroanilino)-6,7-dimethoxyquinazoline] and EGFR inhibitor 1 [cyclopropanecarboxylic acid-(3-(6-(3-trifluoromethyl-phenylamino)-pyrimidin-4-ylamino)-phenyl)-amide]. OVA induced rapid increases in the phosphorylation of MYPT1 (Thr-853), Src (Tyr-416), and EGFR (Tyr-1173) in VSMCs, and Src inhibitors abolished these effects. OVA-induced Src phosphorylation was abrogated by Src inhibitors, but not affected by inhibitors of EGFR and Rho-kinase. Inhibitors of Src and EGFR, but not Rho-kinase, also blocked OVA-induced EGFR phosphorylation. Furthermore, a metalloproteinase inhibitor TAPI-0 [N-(R)-[2-(hydroxyaminocarbonyl) methyl]-4-methylpentanoyl-l-naphthylalanyl-l-alanine amide] and an inhibitor of heparin-binding EGF (CRM 197) not only abrogated the OVA-induced aortic contraction, but also OVA-induced EGFR and MYPT1 phosphorylation, suggesting the involvement of EGFR transactivation. OVA also induced EGFR phosphorylation at Tyr-845, one of residues phosphorylated by Src. These results suggest that OVA-induced vasocontraction is mediated by the Rho-kinase-dependent inactivation of myosin light-chain phosphatase via signaling downstream of Src-induced transactivation of EGFR.
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Affiliation(s)
- Katsutoshi Yayama
- Laboratory of Cardiovascular Pharmacology, Department of Biopharmaceutical Sciences, Kobe Gakuin University Minatojima 1-1-3, Chuo-ku, Kobe, 650-8586, Japan
| | - Tomoya Sasahara
- Laboratory of Cardiovascular Pharmacology, Department of Biopharmaceutical Sciences, Kobe Gakuin University Minatojima 1-1-3, Chuo-ku, Kobe, 650-8586, Japan
| | - Hisaaki Ohba
- Laboratory of Cardiovascular Pharmacology, Department of Biopharmaceutical Sciences, Kobe Gakuin University Minatojima 1-1-3, Chuo-ku, Kobe, 650-8586, Japan
| | - Ayaka Funasaka
- Laboratory of Cardiovascular Pharmacology, Department of Biopharmaceutical Sciences, Kobe Gakuin University Minatojima 1-1-3, Chuo-ku, Kobe, 650-8586, Japan
| | - Hiroshi Okamoto
- Laboratory of Cardiovascular Pharmacology, Department of Biopharmaceutical Sciences, Kobe Gakuin University Minatojima 1-1-3, Chuo-ku, Kobe, 650-8586, Japan
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Gable ME, Abdallah SL, Najjar SM, Liu L, Askari A. Digitalis-induced cell signaling by the sodium pump: on the relation of Src to Na(+)/K(+)-ATPase. Biochem Biophys Res Commun 2014; 446:1151-4. [PMID: 24667596 DOI: 10.1016/j.bbrc.2014.03.071] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [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: 03/05/2014] [Accepted: 03/17/2014] [Indexed: 11/15/2022]
Abstract
In addition to performing its essential transport function, the sodium pump also activates multiple cell signaling pathways in response to digitalis drugs such as ouabain. Based mainly on cell-free studies with mixtures of purified Src kinase and Na(+)/K(+)-ATPase, a well-advocated hypothesis on how ouabain initiates the activation of signaling pathways is that there is a preexisting physiological complex of inactive Src bound to the α-subunit of Na(+)/K(+)-ATPase, and that ouabain binding to this subunit disrupts the bound Src and activates it. Because of the published disagreements of the results of such cell-free experiments of two other laboratories, our aim was to attempt the resolution of these discrepancies. We reexamined the effects of ouabain, vanadate, and oligomycin on mixtures of Src, Na(+)/K(+)-ATPase, Mg(2+), and ATP as specified in prior studies; and assayed for Src-418 autophosphorylation as the measure of Src activation. In contrast to the findings of the proponents of the above hypothesis, our results showed similar effects of the three inhibitors of Na(+)/K(+)-ATPase; indicating that Src activation in such experiments is primarily due to the ATP-sparing effect of the ATPase inhibitor on the mixture of two enzymes competing for ATP. We conclude that there is no solid evidence for direct molecular interaction of Src with Na(+)/K(+)-ATPase under physiological conditions.
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Affiliation(s)
- Marjorie E Gable
- Department of Biochemistry and Cancer Biology, College of Medicine and Life Sciences, University of Toledo, Health Science Campus, Toledo, OH 43614, USA
| | - Simon L Abdallah
- Department of Physiology and Pharmacology and the Center for Diabetes and Endocrine Research, University of Toledo, Health Science Campus, Toledo, OH 43614, USA
| | - Sonia M Najjar
- Department of Physiology and Pharmacology and the Center for Diabetes and Endocrine Research, University of Toledo, Health Science Campus, Toledo, OH 43614, USA
| | - Lijun Liu
- Department of Biochemistry and Cancer Biology, College of Medicine and Life Sciences, University of Toledo, Health Science Campus, Toledo, OH 43614, USA
| | - Amir Askari
- Department of Biochemistry and Cancer Biology, College of Medicine and Life Sciences, University of Toledo, Health Science Campus, Toledo, OH 43614, USA.
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Mangialavori IC, Ferreira-Gomes MS, Saffioti NA, González-Lebrero RM, Rossi RC, Rossi JPFC. Conformational changes produced by ATP binding to the plasma membrane calcium pump. J Biol Chem 2013; 288:31030-41. [PMID: 24025327 DOI: 10.1074/jbc.m113.494633] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The aim of this work was to study the plasma membrane calcium pump (PMCA) reaction cycle by characterizing conformational changes associated with calcium, ATP, and vanadate binding to purified PMCA. This was accomplished by studying the exposure of PMCA to surrounding phospholipids by measuring the incorporation of the photoactivatable phosphatidylcholine analog 1-O-hexadecanoyl-2-O-[9-[[[2-[(125)I]iodo-4-(trifluoromethyl-3H-diazirin-3-yl)benzyl]oxy]carbonyl]nonanoyl]-sn-glycero-3-phosphocholine to the protein. ATP could bind to the different vanadate-bound states of the enzyme either in the presence or in the absence of Ca(2+) with high apparent affinity. Conformational movements of the ATP binding domain were determined using the fluorescent analog 2'(3')-O-(2,4,6-trinitrophenyl)adenosine 5'-triphosphate. To assess the conformational behavior of the Ca(2+) binding domain, we also studied the occlusion of Ca(2+), both in the presence and in the absence of ATP and with or without vanadate. Results show the existence of occluded species in the presence of vanadate and/or ATP. This allowed the development of a model that describes the transport of Ca(2+) and its relation with ATP hydrolysis. This is the first approach that uses a conformational study to describe the PMCA P-type ATPase reaction cycle, adding important features to the classical E1-E2 model devised using kinetics methodology only.
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Affiliation(s)
- Irene C Mangialavori
- From the Instituto de Química y Fisicoquímica Biologicas, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Junín 956 (1113) Buenos Aires, Argentina
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Wang B, Tanaka K, Morita A, Ninomiya Y, Maruyama K, Fujita K, Hosoi Y, Nenoi M. Sodium ortho vanadate (vanadate), a potent mitigator of radiation-induced damage to the hematopoietic system in mice. J Radiat Res 2013; 54:620-9. [PMID: 23349341 PMCID: PMC3709668 DOI: 10.1093/jrr/rrs140] [Citation(s) in RCA: 18] [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] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Revised: 12/07/2012] [Accepted: 12/24/2012] [Indexed: 05/31/2023]
Abstract
Previous in vitro and in vivo studies have shown that sodium orthovanadate (vanadate), an inorganic vanadium compound, could effectively suppress radiation-induced p53-mediated apoptosis via both transcription-dependent and transcription-independent pathways. As a potent radiation protector administered at a dose of 20 mg/kg body weight (20 mg/kg) prior to total body irradiation (TBI) by intra-peritoneal (ip) injection, it completely protected mice from hematopoietic syndrome and partially from gastrointestinal syndrome. In the present study, radiation mitigation effects from vanadate were investigated by ip injection of vanadate after TBI in mice. Results showed that a single administration of vanadate at a dose of 20 mg/kg markedly improved the 30-day survival rate and the peripheral blood hemogram, relieved bone marrow aplasia and decreased occurrence of the bone marrow micronucleated erythrocytes in the surviving animals. The dose reduction factor was 1.2 when a single dose of 20 mg/kg was administered 15 min after TBI in mice using the 30-day survival test as the endpoint. Results also showed that either doubling the vanadate dose (40 mg/kg) in a single administration or continuing the vanadate treatment (after a single administration at 20 mg/kg) from the following day at a dose of 5 mg/kg per day for 4 consecutive days further significantly improved the efficacy for rescuing bone marrow failure in the 30-day survival test. Taken together, these findings indicate that vanadate would be a potent mitigator suppressing the acute lethality (hematopoietic syndrome) and minimizing the detrimental effects (anhematopoiesis and delayed genotoxic effects) induced by TBI in mice.
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Affiliation(s)
- Bing Wang
- Radiation Risk Reduction Research Program, Research Center for Radiation Protection, National Institute of Radiological Sciences, Anagawa 4-9-1, Inage-ku, Chiba 263-8555, Japan
| | - Kaoru Tanaka
- Radiation Risk Reduction Research Program, Research Center for Radiation Protection, National Institute of Radiological Sciences, Anagawa 4-9-1, Inage-ku, Chiba 263-8555, Japan
| | - Akinori Morita
- Research Institute for Radiation Biology and Medicine, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima 734-8553, Japan
| | - Yasuharu Ninomiya
- Radiation Risk Reduction Research Program, Research Center for Radiation Protection, National Institute of Radiological Sciences, Anagawa 4-9-1, Inage-ku, Chiba 263-8555, Japan
| | - Kouichi Maruyama
- Radiation Risk Reduction Research Program, Research Center for Radiation Protection, National Institute of Radiological Sciences, Anagawa 4-9-1, Inage-ku, Chiba 263-8555, Japan
| | - Kazuko Fujita
- School of Medicine, Faculty of Medicine, Toho University, Omorinishi 5-21-16, Ota-ku, Tokyo 143-8540, Japan
| | - Yoshio Hosoi
- Research Institute for Radiation Biology and Medicine, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima 734-8553, Japan
| | - Mitsuru Nenoi
- Radiation Risk Reduction Research Program, Research Center for Radiation Protection, National Institute of Radiological Sciences, Anagawa 4-9-1, Inage-ku, Chiba 263-8555, Japan
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Mohamad Shahi M, Haidari F, Shiri MR. Comparison of effect of resveratrol and vanadium on diabetes related dyslipidemia and hyperglycemia in streptozotocin induced diabetic rats. Adv Pharm Bull 2011; 1:81-6. [PMID: 24312761 DOI: 10.5681/apb.2011.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2011] [Accepted: 11/24/2011] [Indexed: 12/15/2022] Open
Abstract
PURPOSE Resveratrol a natural polyphenolicstilbene derivative has wide variety of biological activities. There is also a large body of evidence demonstrating positive effect of resveratrol in treatment of various metabolic complications including metabolic syndrome, obesity, diabetes and dyslipidemia in adults. The purpose of this study was to investigate anti-hyperglycemic and anti-dyslipidemic effects of resveratrol. METHODS We used 40 diabetic streptozotocin Wistar rats. Rats were randomly divided into 5 treatment groups (n=8 in each) including normal control, normal treated with resveratrol, diabetic control, diabetic treated with vanadium , diabetic treated with resveratrol . Resveratrol (25 mg/kgbw) and vanadate (0.2 mg/kgbw) was orally gavaged for 40 days and blood samples were directly collected from heart. RESULTS Diabetic rats treated with resveratrol in comparison to control diabetic rats demonstrated a significant (p = 0.001) decline in serum glucose concentration, and high plasma concentrations of total cholesterol and LDL-c were reduced (p = 0.031, p = 0.004 respectively). Furthermore, body weight loss trend that observed in diabetic rats alleviated by resveratrol and vanadate. However triglyceride, VLDL-c and HDL-c levels did not changed significantly. CONCLUSION In conclusion Resveratrol ameliorated dyslipidemia and hyperglycemia in diabetic rats. However further investigations in peculiar human studies are required.
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Affiliation(s)
- Majid Mohamad Shahi
- Nutrition Research Center, Ahvaz Jundishapour University of Medical Sciences, Ahvaz, Iran
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Abstract
The number of papers about decavanadate has doubled in the past decade. In the present review, new insights into decavanadate biochemistry, cell biology, and antidiabetic and antitumor activities are described. Decameric vanadate species (V10) clearly differs from monomeric vanadate (V1), and affects differently calcium pumps, and structure and function of myosin and actin. Only decavanadate inhibits calcium accumulation by calcium pump ATPase, and strongly inhibits actomyosin ATPase activity (IC50 = 1.4 μmol/L, V10), whereas no such effects are detected with V1 up to 150 μmol/L; prevents actin polymerization (IC50 of 68 μmol/L, whereas no effects detected with up to 2 mmol/L V1); and interacts with actin in a way that induces cysteine oxidation and vanadate reduction to vanadyl. Moreover, in vivo decavanadate toxicity studies have revealed that acute exposure to polyoxovanadate induces different changes in antioxidant enzymes and oxidative stress parameters, in comparison with vanadate. In vitro studies have clearly demonstrated that mitochondrial oxygen consumption is strongly affected by decavanadate (IC50, 0.1 μmol/L); perhaps the most relevant biological effect. Finally, decavanadate (100 μmol/L) increases rat adipocyte glucose accumulation more potently than several vanadium complexes. Preliminary studies suggest that decavanadate does not have similar effects in human adipocytes. Although decavanadate can be a useful biochemical tool, further studies must be carried out before it can be confirmed that decavanadate and its complexes can be used as anticancer or antidiabetic agents.
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Takeda S, Prajapati D, Mochizuki S, Elimban V, Dhalla NS. Attenuation of ischemia-reperfusion induced changes in cardiac performance and sarcoplasmic reticulum function by vanadate. Exp Clin Cardiol 2003; 8:134-138. [PMID: 19641705 PMCID: PMC2716274] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
By virtue of its ability to enhance glucose uptake and oxidation in the cell, vanadate is known to exert an insulin-like action in the body. Because defects in substrate use and energy generation are considered to play an important role in cardiac contractile dysfunction as a consequence of ischemia-reperfusion (I/R), this study was carried out to examine the effects of vanadate on I/R-induced changes in cardiac performance and sarcoplasmic reticulum (SR) function. For this purpose, isolated rat hearts were subjected to global ischemia for 30 min and then reperfused for 30 min with normal perfusion medium in the absence or presence of different concentrations of vanadate. The left ventricular developed pressure, rate of contraction and rate of relaxation were depressed, whereas the left ventricular end-diastolic pressure was increased in the ischemic-reperfused heart. However, these abnormalities were attenuated on treatment of the heart with 1 muM and 4 muM of vanadate. The SR preparation isolated from the ischemic-reperfused hearts showed a marked depression in calcium uptake and ryanodine binding (calcium release channel) activities; these defects were attenuated by the addition of vanadate to the perfusion medium. The results demonstrate beneficial effects of vanadate on cardiac dysfunction and changes in SR calcium transport due to I/R injury.
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Affiliation(s)
- Satoshi Takeda
- Institute of Cardiovascular Sciences, St Boniface General Hospital Research Centre, and Department of Physiology, Faculty of Medicine, University of Manitoba, Winnipeg, Manitoba
| | - Dashang Prajapati
- Department of Medicine, Jikei University School of Medicine, Tokyo, Japan
| | - Seibu Mochizuki
- Institute of Cardiovascular Sciences, St Boniface General Hospital Research Centre, and Department of Physiology, Faculty of Medicine, University of Manitoba, Winnipeg, Manitoba
| | - Vijayan Elimban
- Department of Medicine, Jikei University School of Medicine, Tokyo, Japan
| | - Naranjan S Dhalla
- Department of Medicine, Jikei University School of Medicine, Tokyo, Japan
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