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Xu G, Li W, Zhao Y, Fan T, Gao Q, Wang Y, Zhang F, Gao M, An Z, Yang Z. Overexpression of Lias Gene Alleviates Cadmium-Induced Kidney Injury in Mice Involving Multiple Effects: Metabolism, Oxidative Stress, and Inflammation. Biol Trace Elem Res 2024; 202:2797-2811. [PMID: 37804446 DOI: 10.1007/s12011-023-03883-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 09/23/2023] [Indexed: 10/09/2023]
Abstract
Oxidative stress is an important mechanism underlying toxicity induced by cadmium (Cd) exposure. However, there are significant differences of the antioxidant baseline in different populations. This means that different human has different intensity of oxidative stress in vivo after exposure to toxicants. LiasH/H mouse is a specific model which is created by genetically modifying the Lias 3'-untranslated region (3'-UTR). LiasH/H mice express high levels of LA and have high endogenous antioxidant capacity which is approximately 150% higher than wild-type C57BL/6 J mice (WT, Lias+/+). But more importantly, they have dual roles of metal chelator and antioxidant. Here, we applied this mouse model to evaluate the effect of endogenous antioxidant levels in the body on alleviating Cd-induced renal injury including Cd metabolism, oxidative stress, and inflammation. In the experiment, mice drank water containing Cd (50 mg/L), for 12 weeks. Many biomarkers of Cd metabolism, oxidative stress, inflammation, and major pathological changes in the kidney were examined. The results showed overexpression of the Lias gene decreased Cd burden in the body of mice, mitigated oxidative stress, attenuated the inflammatory response, and subsequent alleviated cadmium-induced kidney injury in mice.
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Affiliation(s)
- Guangcui Xu
- School of Public Health, Xinxiang Medical University, Xinxiang, Henan Province, 453003, People's Republic of China.
| | - Weibing Li
- School of Public Health, Xinxiang Medical University, Xinxiang, Henan Province, 453003, People's Republic of China
| | - Yingzheng Zhao
- School of Public Health, Xinxiang Medical University, Xinxiang, Henan Province, 453003, People's Republic of China
| | - Ting Fan
- School of Public Health, Xinxiang Medical University, Xinxiang, Henan Province, 453003, People's Republic of China
| | - Qiyu Gao
- School of Public Health, Xinxiang Medical University, Xinxiang, Henan Province, 453003, People's Republic of China
| | - Yongbin Wang
- School of Public Health, Xinxiang Medical University, Xinxiang, Henan Province, 453003, People's Republic of China
| | - Fengquan Zhang
- School of Public Health, Xinxiang Medical University, Xinxiang, Henan Province, 453003, People's Republic of China
| | - Mingjing Gao
- School of Public Health, Xinxiang Medical University, Xinxiang, Henan Province, 453003, People's Republic of China
| | - Zhen An
- School of Public Health, Xinxiang Medical University, Xinxiang, Henan Province, 453003, People's Republic of China
| | - Zijiang Yang
- School of Public Health, Xinxiang Medical University, Xinxiang, Henan Province, 453003, People's Republic of China.
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Essig YJ, Leszczyszyn OI, Almutairi N, Harrison-Smith A, Blease A, Zeitoun-Ghandour S, Webb SM, Blindauer CA, Stürzenbaum SR. Juggling cadmium detoxification and zinc homeostasis: A division of labour between the two C. elegans metallothioneins. CHEMOSPHERE 2024; 350:141021. [PMID: 38151062 PMCID: PMC11134313 DOI: 10.1016/j.chemosphere.2023.141021] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 12/18/2023] [Accepted: 12/20/2023] [Indexed: 12/29/2023]
Abstract
The chemical properties of toxic cadmium and essential zinc are very similar, and organisms require intricate mechanisms that drive selective handling of metals. Previously regarded as unspecific "metal sponges", metallothioneins (MTLs) are emerging as metal selectivity filters. By utilizing C. elegans mtl-1 and mtl-2 knockout strains, metal accumulation in single worms, single copy fluorescent-tagged transgenes, isoform specific qPCR and lifespan studies it was possible to demonstrate that the handling of cadmium and zinc by the two C. elegans metallothioneins differs fundamentally: the MTL-2 protein can handle both zinc and cadmium, but when it becomes unavailable, either via a knockout or by elevated cadmium exposure, MTL-1 takes over zinc handling, leaving MTL-2 to sequester cadmium. This division of labour is reflected in the folding behaviour of the proteins: MTL-1 folded well in presence of zinc but not cadmium, the reverse was the case for MTL-2. These differences are in part mediated by a zinc-specific mononuclear His3Cys site in the C-terminal insertion of MTL-1; its removal affected the entire C-terminal domain and may shift its metal selectivity towards zinc. Overall, we uncover how metallothionein isoform-specific responses and protein properties allow C. elegans to differentiate between toxic cadmium and essential zinc.
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Affiliation(s)
- Yona J Essig
- Analytical, Environmental and Forensic Sciences Department, King's College London, London, UK
| | - Oksana I Leszczyszyn
- Analytical, Environmental and Forensic Sciences Department, King's College London, London, UK
| | - Norah Almutairi
- Analytical, Environmental and Forensic Sciences Department, King's College London, London, UK
| | | | - Alix Blease
- Analytical, Environmental and Forensic Sciences Department, King's College London, London, UK
| | | | - Sam M Webb
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | | | - Stephen R Stürzenbaum
- Analytical, Environmental and Forensic Sciences Department, King's College London, London, UK.
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3
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Sepulchro Mulher LCC, Simões RP, Rossi KA, Schereider IRG, Silva Nascimento CLD, Ávila RA, Padilha AS. In vitro cadmium exposure induces structural damage and endothelial dysfunction in female rat aorta. Biometals 2023; 36:1405-1420. [PMID: 37651061 DOI: 10.1007/s10534-023-00526-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 07/31/2023] [Indexed: 09/01/2023]
Abstract
Cadmium is a heavy metal that is widespread in the environment and has been described as a metalloestrogen and a cardiovascular risk factor. Experimental studies conducted in male animals have shown that cadmium exposure induces vascular dysfunction, which could lead to vasculopathies caused by this metal. However, it is necessary to investigate the vascular effects of cadmium in female rats to understand its potential sex-dependent impact on the cardiovascular system. While its effects on male rats have been studied, cadmium may act differently in females due to its potential as a metalloestrogen. In vitro studies conducted in a controlled environment allow for a direct assessment of cadmium's impact on vascular function, and the use of female rats ensures that sex-dependent effects are evaluated. Therefore, the aim of this study was to investigate the in vitro effects of Cadmium Chloride (CdCl2, 5 µM) exposure on vascular reactivity in the isolated aorta of female Wistar rats. Exposure to CdCl2 damaged the architecture of the vascular endothelium. CdCl2 incubation increased the production and release of O2•-, reduced the participation of potassium (K+) channels, and increased the participation of the angiotensin II pathway in response to phenylephrine. Moreover, estrogen receptors alpha (Erα) modulated vascular reactivity to phenylephrine in the presence of cadmium, supporting the hypothesis that cadmium could act as a metalloestrogen. Our results demonstrated that in vitro cadmium exposure induces damage to endothelial architecture and an increase in oxidative stress in the isolated aorta of female rats, which could precipitate vasculopathies. Graphical Abstract. Own source from Canva and Servier Medical Art servers.
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Affiliation(s)
- Lorraine Christiny Costa Sepulchro Mulher
- Physiological Sciences Post-Graduation Program, CCS/UFES, Federal University of Espírito Santo, Av. Marechal Campos, 1468, 26 Maruípe, Vitoria, ES, 29043-900, Brazil
| | - Rakel Passos Simões
- Physiological Sciences Post-Graduation Program, CCS/UFES, Federal University of Espírito Santo, Av. Marechal Campos, 1468, 26 Maruípe, Vitoria, ES, 29043-900, Brazil
| | - Karoline Alves Rossi
- Physiological Sciences Post-Graduation Program, CCS/UFES, Federal University of Espírito Santo, Av. Marechal Campos, 1468, 26 Maruípe, Vitoria, ES, 29043-900, Brazil
| | - Ingridy Reinholz Grafites Schereider
- Physiological Sciences Post-Graduation Program, CCS/UFES, Federal University of Espírito Santo, Av. Marechal Campos, 1468, 26 Maruípe, Vitoria, ES, 29043-900, Brazil
| | - Camilla Lóren da Silva Nascimento
- Physiological Sciences Post-Graduation Program, CCS/UFES, Federal University of Espírito Santo, Av. Marechal Campos, 1468, 26 Maruípe, Vitoria, ES, 29043-900, Brazil
| | - Renata Andrade Ávila
- Physiological Sciences Post-Graduation Program, CCS/UFES, Federal University of Espírito Santo, Av. Marechal Campos, 1468, 26 Maruípe, Vitoria, ES, 29043-900, Brazil
| | - Alessandra Simão Padilha
- Physiological Sciences Post-Graduation Program, CCS/UFES, Federal University of Espírito Santo, Av. Marechal Campos, 1468, 26 Maruípe, Vitoria, ES, 29043-900, Brazil.
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Lange A, Segner H. The Role of Glutathione and Sulfhydryl Groups in Cadmium Uptake by Cultures of the Rainbow Trout RTG-2 Cell Line. Cells 2023; 12:2720. [PMID: 38067148 PMCID: PMC10705847 DOI: 10.3390/cells12232720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 11/21/2023] [Accepted: 11/23/2023] [Indexed: 12/18/2023] Open
Abstract
The aim of this study is to investigate the role of cellular sulfhydryl and glutathione (GSH) status in cellular cadmium (Cd) accumulation using cultures of the rainbow trout cell line RTG-2. In a first set of experiments, the time course of Cd accumulation in RTG-2 cells exposed to a non-cytotoxic CdCl2 concentration (25 μM) was determined, as were the associated changes in the cellular sulfhydryl status. The cellular levels of total GSH, oxidized glutathione (GSSG), and cysteine were determined with fluorometric high-performance liquid chromatography (HPLC), and the intracellular Cd concentrations were determined with inductively coupled plasma mass spectrometry (ICP-MS). The Cd uptake during the first 24 h of exposure was linear before it approached a plateau at 48 h. The metal accumulation did not cause an alteration in cellular GSH, GSSG, or cysteine levels. In a second set of experiments, we examined whether the cellular sulfhydryl status modulates Cd accumulation. To this end, the following approaches were used: (a) untreated RTG-2 cells as controls, and (b) RTG-2 cells that were either depleted of GSH through pre-exposure to 1 mM L-buthionine-SR-sulfoximine (BSO), an inhibitor of glutathione synthesis, or the cellular sulfhydryl groups were blocked through treatment with 2.5 μM N-ethylmaleimide (NEM). Compared to the control cells, the cells depleted of intracellular GSH showed a 25% reduction in Cd accumulation. Likewise, the Cd accumulation was reduced by 25% in the RTG-2 cells with blocked sulfhydryl groups. However, the 25% decrease in cellular Cd accumulation in the sulfhydryl-manipulated cells was statistically not significantly different from the Cd accumulation in the control cells. The findings of this study suggest that the intracellular sulfhydryl and GSH status, in contrast to their importance for Cd toxicodynamics, is of limited importance for the toxicokinetics of Cd in fish cells.
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Trigo JP, Stedt K, Schmidt AEM, Kollander B, Edlund U, Nylund G, Pavia H, Abdollahi M, Undeland I. Mild blanching prior to pH-shift processing of Saccharina latissima retains protein extraction yields and amino acid levels of extracts while minimizing iodine content. Food Chem 2023; 404:134576. [PMID: 36265271 DOI: 10.1016/j.foodchem.2022.134576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 10/05/2022] [Accepted: 10/08/2022] [Indexed: 11/05/2022]
Abstract
The seaweed Saccharina latissima is often blanched to lower iodine levels, however, it is not known how blanching affects protein extraction. We assessed the effect of blanching or soaking (80/45/12 °C, 2 min) on protein yield and protein extract characteristics after pH-shift processing of S. latissima. Average protein yields and extract amino acid levels ranked treatments as follows: blanching-45 °C ∼ control > soaking ∼ blanching-80 °C. Although blanching-45 °C decreased protein solubilization yield at pH 12, it increased isoelectric protein precipitation yield at pH 2 (p < 0.05). The former could be explained by a higher ratio of large peptides/proteins in the blanched biomass as shown by HP-SEC, whereas the latter by blanching-induced lowering of ionic strength, as verified by a dialysis model. Moreover, blanching-45 °C yielded a protein extract with 49 % less iodine compared with the control extract. We recommend blanching-45 °C since it is effective at removing iodine and does not compromise total protein extraction yield.
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Affiliation(s)
- João P Trigo
- Department of Biology and Biological Engineering - Food and Nutrition Science, Chalmers University of Technology, SE 412 96 Gothenburg, Sweden.
| | - Kristoffer Stedt
- Tjärnö Marine Laboratory, Department of Marine Sciences, University of Gothenburg, Strömstad, Sweden
| | - Alina E M Schmidt
- Fibre and Polymer Technology, KTH Royal Institute of Technology, SE 100 44 Stockholm, Sweden
| | - Barbro Kollander
- Livsmedelsverket - Swedish Food Agency, Dag Hammarskjölds väg 56 A, Uppsala, Sweden
| | - Ulrica Edlund
- Fibre and Polymer Technology, KTH Royal Institute of Technology, SE 100 44 Stockholm, Sweden
| | - Göran Nylund
- Tjärnö Marine Laboratory, Department of Marine Sciences, University of Gothenburg, Strömstad, Sweden
| | - Henrik Pavia
- Tjärnö Marine Laboratory, Department of Marine Sciences, University of Gothenburg, Strömstad, Sweden
| | - Mehdi Abdollahi
- Department of Biology and Biological Engineering - Food and Nutrition Science, Chalmers University of Technology, SE 412 96 Gothenburg, Sweden
| | - Ingrid Undeland
- Department of Biology and Biological Engineering - Food and Nutrition Science, Chalmers University of Technology, SE 412 96 Gothenburg, Sweden.
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Rivetta A, Pesenti M, Sacchi GA, Nocito FF, Cocucci M. Cadmium Transport in Maize Root Segments Using a Classical Physiological Approach: Evidence of Influx Largely Exceeding Efflux in Subapical Regions. PLANTS (BASEL, SWITZERLAND) 2023; 12:992. [PMID: 36903851 PMCID: PMC10005225 DOI: 10.3390/plants12050992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 02/16/2023] [Accepted: 02/20/2023] [Indexed: 06/18/2023]
Abstract
The bidirectional fluxes of cadmium and calcium across the plasma membrane were assessed and compared in subapical maize root segments. This homogeneous material provides a simplified system for investigating ion fluxes in whole organs. The kinetic profile of cadmium influx was characterized by a combination of a saturable rectangular hyperbola (Km = 30.15) and a straight line (k = 0.0013 L h-1 g-1 fresh weight), indicating the presence of multiple transport systems. In contrast, the influx of calcium was described by a simple Michaelis-Menten function (Km = 26.57 µM). The addition of calcium to the medium reduced cadmium influx into the root segments, suggesting a competition between the two ions for the same transport system(s). The efflux of calcium from the root segments was found to be significantly higher than that of cadmium, which was extremely low under the experimental conditions used. This was further confirmed by comparing cadmium and calcium fluxes across the plasma membrane of inside-out vesicles purified from maize root cortical cells. The inability of the root cortical cells to extrude cadmium may have driven the evolution of metal chelators for detoxifying intracellular cadmium ions.
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7
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Mahmut K, Demiray GA, Sevgiler Y. Oxidative and osmoregulatory effects of imidacloprid, cadmium, and their combinations on Daphnia magna. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2022; 95:103963. [PMID: 36028165 DOI: 10.1016/j.etap.2022.103963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 08/16/2022] [Accepted: 08/18/2022] [Indexed: 06/15/2023]
Abstract
Oxidative stress and osmoregulatory system damage-inducing potential of binary mixtures of neonicotinoid insecticide imidacloprid (IMI) and Cd2+ in Daphnia magna were evaluated. Animals were subjected to subchronic (7 days) and acute (48 h) of IMI and Cd2+ effects with single and binary mixtures. ATPase and antioxidant enzyme activities with lipid peroxidation were measured. Morphometric characteristics were also evaluated. Response patterns showed variability due to the duration, concentration, and toxicant type. While the enzyme activities mostly showed a decreasing trend upon the subchronic IMI effect, there was an increasing trend after the Cd2+. Declined enzyme activities were more pronounced with the acute higher IMI+Cd2+ exposure. Ca2+-ATPase and CAT were the most sensitive biomarkers in the toxicity response. IMI+Cd2+ exposures are appeared to increase their toxic effects due to their oxidative potential. ATPase inhibition and antioxidant enzyme alterations with a decrease in morphometric characteristics in Daphnia even at their low concentrations of IMI and Cd2+ show evidence of their toxicities on aquatic life. It was emphasized that investigating the combined effects of toxicants at their environmental level based on the multi-biomarker approach is essential in toxicity evaluation.
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Affiliation(s)
- Kemal Mahmut
- Çukurova University, Biotechnology Center, Adana, Turkey
| | - Gülüzar Atli Demiray
- Çukurova University, Biotechnology Center, Adana, Turkey; Çukurova University, Vocational School of Imamoglu, Adana, Turkey.
| | - Yusuf Sevgiler
- Adıyaman University, Faculty of Science and Letters, Department of Biology, Adıyaman, Turkey.
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8
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Lussier-Price M, Wahba HM, Mascle XH, Cappadocia L, Bourdeau V, Gagnon C, Igelmann S, Sakaguchi K, Ferbeyre G, Omichinski J. Zinc controls PML nuclear body formation through regulation of a paralog specific auto-inhibition in SUMO1. Nucleic Acids Res 2022; 50:8331-8348. [PMID: 35871297 PMCID: PMC9371903 DOI: 10.1093/nar/gkac620] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 06/22/2022] [Accepted: 07/06/2022] [Indexed: 12/24/2022] Open
Abstract
SUMO proteins are important regulators of many key cellular functions in part through their ability to form interactions with other proteins containing SUMO interacting motifs (SIMs). One characteristic feature of all SUMO proteins is the presence of a highly divergent intrinsically disordered region at their N-terminus. In this study, we examine the role of this N-terminal region of SUMO proteins in SUMO–SIM interactions required for the formation of nuclear bodies by the promyelocytic leukemia (PML) protein (PML-NBs). We demonstrate that the N-terminal region of SUMO1 functions in a paralog specific manner as an auto-inhibition domain by blocking its binding to the phosphorylated SIMs of PML and Daxx. Interestingly, we find that this auto-inhibition in SUMO1 is relieved by zinc, and structurally show that zinc stabilizes the complex between SUMO1 and a phospho-mimetic form of the SIM of PML. In addition, we demonstrate that increasing cellular zinc levels enhances PML-NB formation in senescent cells. Taken together, these results provide important insights into a paralog specific function of SUMO1, and suggest that zinc levels could play a crucial role in regulating SUMO1-SIM interactions required for PML-NB formation and function.
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Affiliation(s)
- Mathieu Lussier-Price
- Département de Biochimie et Médicine Moléculaire, Université de Montréal , Montréal, QC, Canada
| | - Haytham M Wahba
- Département de Biochimie et Médicine Moléculaire, Université de Montréal , Montréal, QC, Canada
- Department of Biochemistry, Beni-Suef University , Beni-Suef, Egypt
| | - Xavier H Mascle
- Département de Biochimie et Médicine Moléculaire, Université de Montréal , Montréal, QC, Canada
| | - Laurent Cappadocia
- Département de Biochimie et Médicine Moléculaire, Université de Montréal , Montréal, QC, Canada
| | - Veronique Bourdeau
- Département de Biochimie et Médicine Moléculaire, Université de Montréal , Montréal, QC, Canada
| | - Christina Gagnon
- Département de Biochimie et Médicine Moléculaire, Université de Montréal , Montréal, QC, Canada
| | - Sebastian Igelmann
- Département de Biochimie et Médicine Moléculaire, Université de Montréal , Montréal, QC, Canada
| | - Kazuyasu Sakaguchi
- Department of Chemistry, Faculty of Science, Hokkaido University , Sapporo, Japan
| | - Gerardo Ferbeyre
- Département de Biochimie et Médicine Moléculaire, Université de Montréal , Montréal, QC, Canada
| | - James G Omichinski
- Département de Biochimie et Médicine Moléculaire, Université de Montréal , Montréal, QC, Canada
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9
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Review of recent advancements in fluorescent chemosensor for ion detection via coumarin derivatives. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02092-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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10
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Prakash S, Mishra AK. Photophysics of faecal pigments stercobilin and urobilin in aliphatic alcohols: introduction of a sensitive method for their detection using solvent phase extraction and fluorometry. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:5573-5588. [PMID: 34787126 DOI: 10.1039/d1ay01539g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Faecal pigments (FPs) are ubiquitous in the environment and are a primary contaminant in groundwater and surface water. This article presents a new analytical paradigm by a fluorescence coupled extraction-based method involving FP fluorescence enhancement and minimization of background fluorescence for high sensitivity detection. FPs show higher fluorescence intensity in aliphatic alcohols due to the breaking down of higher-order H-aggregates into lower-order H-aggregates (dimers). DFT studies using the B3LYP functional and LANL2DZ basis set show π-π stacking and hydrogen-bonding contributions towards forming H-aggregated dimers of FPs in the implicit and explicit solvent environments of 1-hexanol. This study is the first report on the extractability of FPs using 1-hexanol as an efficient extraction medium in comparison to higher-order aliphatic alcohols (1-butanol, 1-hexanol and 1-octanol). Furthermore, FP-Zn(II) complexes in 1-hexanol medium significantly enhance the fluorescence emission intensity (∼14-17 times), and the emission intensity remains stable over time. This further helps to increase the detection limit of FPs in the picomolar to sub-picomolar concentration range. This study proposes a protocol involving extraction of FPs by 1-hexanol followed by the complexation of FPs with Zn(II) in the alcohol media and subsequent fluorimetric detection of the FP-Zn(II) complex with a high level of sensitivity, enabled by reduced interference from the background fluorescence of humic acid. The complexation behaviour of FPs with various metal salts was also examined, which provided an understanding of the fluorescence behaviour of FPs with various other metal ions commonly present in natural environmental water. The proposed analytical method has been further validated using real water samples.
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Affiliation(s)
- Swayam Prakash
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
| | - Ashok Kumar Mishra
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
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11
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Le TTY, Grabner D, Nachev M, García MR, Balsa-Canto E, Peijnenburg WJGM, Hendriks AJ, Sures B. Development of a toxicokinetic-toxicodynamic model simulating chronic copper toxicity to the Zebra mussel based on subcellular fractionation. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2021; 241:106015. [PMID: 34753109 DOI: 10.1016/j.aquatox.2021.106015] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 10/04/2021] [Accepted: 10/29/2021] [Indexed: 06/13/2023]
Abstract
A toxicokinetic-toxicodynamic model based on subcellular metal partitioning is presented for simulating chronic toxicity of copper (Cu) from the estimated concentration in the fraction of potentially toxic metal (PTM). As such, the model allows for considering the significance of different pathways of metal sequestration in predicting metal toxicity. In the metabolically available pool (MAP), excess metals above the metabolic requirements and the detoxification and elimination capacity form the PTM fraction. The reversibly and irreversibly detoxified fractions were distinguished in the biologically detoxified compartment, while responses of organisms were related to Cu accumulation in the PTM fraction. The model was calibrated using the data on Cu concentrations in subcellular fractions and physiological responses measured by the glutathione S-transferase activity and the lipid peroxidation level during 24-day exposure of the Zebra mussel to Cu at concentrations of 25 and 50 µg/L and varying Na+ concentrations up to 4.0 mmol/L. The model was capable of explaining dynamics in the subcellular Cu partitioning, e.g. the trade-off between elimination and detoxification as well as the dependence of net accumulation, elimination, detoxification, and metabolism on the exposure level. Increases in the net accumulation rate in the MAP contributed to increased concentrations of Cu in this fraction. Moreover, these results are indicative of ineffective detoxification at high exposure levels and spill-over effects of detoxification.
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Affiliation(s)
- T T Yen Le
- Department of Aquatic Ecology and Centre for Water and Environmental Research (ZWU), Faculty of Biology, University of Duisburg-Essen, D-45141 Essen, Germany.
| | - Daniel Grabner
- Department of Aquatic Ecology and Centre for Water and Environmental Research (ZWU), Faculty of Biology, University of Duisburg-Essen, D-45141 Essen, Germany
| | - Milen Nachev
- Department of Aquatic Ecology and Centre for Water and Environmental Research (ZWU), Faculty of Biology, University of Duisburg-Essen, D-45141 Essen, Germany
| | - Míriam R García
- Process Engineering Group, Spanish Council for Scientific Research, IIM-CSIC, 36208 Vigo, Spain
| | - Eva Balsa-Canto
- Process Engineering Group, Spanish Council for Scientific Research, IIM-CSIC, 36208 Vigo, Spain
| | - Willie J G M Peijnenburg
- Center for Safety of Substances and Products, National Institute for Public Health and the Environment, Bilthoven, 3720 BA, the Netherlands; Institute for Environmental Sciences, Leiden university, 2311 EZ Leiden, the Netherlands
| | - A Jan Hendriks
- Department of Environmental Science, Faculty of Science, Radboud University Nijmegen, 6525 HP Nijmegen, the Netherlands
| | - Bernd Sures
- Department of Aquatic Ecology and Centre for Water and Environmental Research (ZWU), Faculty of Biology, University of Duisburg-Essen, D-45141 Essen, Germany
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12
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Witkowska D, Słowik J, Chilicka K. Heavy Metals and Human Health: Possible Exposure Pathways and the Competition for Protein Binding Sites. Molecules 2021; 26:molecules26196060. [PMID: 34641604 PMCID: PMC8511997 DOI: 10.3390/molecules26196060] [Citation(s) in RCA: 103] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 10/03/2021] [Accepted: 10/05/2021] [Indexed: 11/16/2022] Open
Abstract
Heavy metals enter the human body through the gastrointestinal tract, skin, or via inhalation. Toxic metals have proven to be a major threat to human health, mostly because of their ability to cause membrane and DNA damage, and to perturb protein function and enzyme activity. These metals disturb native proteins’ functions by binding to free thiols or other functional groups, catalyzing the oxidation of amino acid side chains, perturbing protein folding, and/or displacing essential metal ions in enzymes. The review shows the physiological and biochemical effects of selected toxic metals interactions with proteins and enzymes. As environmental contamination by heavy metals is one of the most significant global problems, some detoxification strategies are also mentioned.
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Yang H, Xiong Z, Xu Z, Liu R. Interactive Effects of Lanthanum and Calcium on Cadmium Accumulation in Wheat with Special Reference to TaNramp5 Expression Regulated by Calmodulin. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:6870-6878. [PMID: 34101455 DOI: 10.1021/acs.jafc.1c00365] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Lanthanum (La), calcium (Ca), and cadmium (Cd) have similar physical and chemical properties because of their similar ionic radius. Although the interactions between La, Ca, and Cd have been frequently reported in plants, few studies have investigated the interactive effects of La and Ca on the growth and Cd accumulation in plants. Therefore, we investigated the interactive effects of La and Ca on the growth and Cd accumulation in wheat under Cd exposure by a hydroponic experiment. The results indicated that wheat growth was significantly affected by La-Cd and La-Ca interactions. The accumulation of Cd in wheat was significantly affected by La-Ca and La-Cd interactions and La-Ca-Cd interplay. Correlation analysis indicated that Ca deficiency stimulated La to promote wheat growth and mitigate Cd toxicity. Simultaneously, a low Ca supply stimulated La to decrease Cd accumulation in wheat and induce TaNramp5 expression. In addition, Cd accumulation in wheat was significantly affected by the W7-La interaction and W7-La-Ca interplay. All of the results suggested that La, Ca, and Cd probably share the same binding sites in calmodulin (TaCaM) and La could affect Cd accumulation in wheat by interacting with TaCaM and then downregulating the expression of TaNramp5.
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Affiliation(s)
- Hua Yang
- School of Geography and Environmental Sciences, Guizhou Normal University, Guiyang, Guizhou 550025, People's Republic of China
- School of Resources and Environmental Science, Wuhan University, Wuhan, Hubei 430079, People's Republic of China
- State Key Laboratory Incubation Base for Karst Mountain Ecology Environment of Guizhou Province, Guiyang, Guizhou 550001, People's Republic of China
| | - Zhiting Xiong
- School of Resources and Environmental Science, Wuhan University, Wuhan, Hubei 430079, People's Republic of China
| | - Zhongrui Xu
- School of Resources and Environmental Science, Wuhan University, Wuhan, Hubei 430079, People's Republic of China
| | - Rongxiang Liu
- School of Resources and Environmental Science, Wuhan University, Wuhan, Hubei 430079, People's Republic of China
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14
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Saisree S, Aswathi R, Arya Nair JS, Sandhya KY. Radical sensitivity and selectivity in the electrochemical sensing of cadmium ions in water by polyaniline-derived nitrogen-doped graphene quantum dots. NEW J CHEM 2021. [DOI: 10.1039/d0nj03988h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
In the present work, the sensing capability of nitrogen-doped graphene quantum dots (N-GQDs) was explored for the first time toward hazardous heavy metal ions and they were found to be able to selectively detect cadmium ions (Cd(ii)).
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Affiliation(s)
- S. Saisree
- Department of Chemistry
- Indian Institute of Space Science and Technology Valiyamala
- Thiruvananthapuram 695547
- India
| | - R. Aswathi
- Department of Chemistry
- Indian Institute of Space Science and Technology Valiyamala
- Thiruvananthapuram 695547
- India
| | - J. S. Arya Nair
- Department of Chemistry
- Indian Institute of Space Science and Technology Valiyamala
- Thiruvananthapuram 695547
- India
| | - K. Y. Sandhya
- Department of Chemistry
- Indian Institute of Space Science and Technology Valiyamala
- Thiruvananthapuram 695547
- India
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15
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Zhang C, Huang Y, Talukder M, Ge J, Lv MW, Bi SS, Li JL. Selenium sources differ in their potential to alleviate the cadmium-induced testicular dysfunction. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 267:115610. [PMID: 33254640 DOI: 10.1016/j.envpol.2020.115610] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 08/17/2020] [Accepted: 09/03/2020] [Indexed: 06/12/2023]
Abstract
Cadmium (Cd), a major environmental contaminant, is closely associated with male reproductive health. Selenium (Se) has been recognized as an effective chemo-protectant against Cd toxicity, but the underlying mechanisms remain unclear. The objective of present study was to illustrate the toxic effect of Cd on testis, and then compare the antagonistic effect among different Se sources on growth performance, testicular damage, ion homeostasis, antioxidative potential, and the expression of selenotranscriptome and biosynthetic related factors in Cd-treated chicken. Male chickens were fed with (Ⅰ) Control group: basal diet; (Ⅱ) Cd group: basal diet with 140 mg/kg CdCl2; (Ⅲ) YSe + Cd group: basal diet with 140 mg/kg CdCl2 and 3 mg/kg Yeast-Se; (Ⅳ) NSe + Cd group: basal diet with 140 mg/kg CdCl2 and 1 mg/kg Nano-Se; (Ⅴ) SSe + Cd group: basal diet with 140 mg/kg CdCl2 and 3 mg/kg Na2SeO3. It was observed that different Se treatments dramatically alleviated Cd-induced testicular developmental disorder, ion homeostasis disorder, hormone secretion disorder and oxidative stress. Simultaneously, Se mitigated Cd-induced testicular toxicity by regulating selenoprotein biosynthetic related factors to promote selenoprotein transcription. Finally, this study indicated that dietary supplementation of Yeast-Se produced an acceptable Se form to protect testis from Cd exposure.
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Affiliation(s)
- Cong Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China; College of Animal Science and Veterinary Medicine, Henan Agricultural University, 450046, Zhengzhou, Henan, China
| | - Yan Huang
- Department of Animal Science, Division of Agriculture, University of Arkansas, Fayetteville, AR72701, USA
| | - Milton Talukder
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China; Department of Physiology and Pharmacology, Faculty of Animal Science and Veterinary Medicine, Patuakhali Science and Technology University, Barishal, 8210, Bangladesh
| | - Jing Ge
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Mei-Wei Lv
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Shao-Shuai Bi
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Jin-Long Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China; Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment, Northeast Agricultural University, Harbin, 150030, PR China; Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Northeast Agricultural University, Harbin, 150030, PR China.
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16
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Mouro VGS, de Melo FCSA, Martins ALP, de Lucca Moreira Gomes M, de Oliveira JM, de Freitas MBD, Demuner AJ, Leite JPV, da Matta SLP. Euterpe oleracea (Martius) Oil Reverses Testicular Alterations Caused after Cadmium Administration. Biol Trace Elem Res 2020; 197:555-570. [PMID: 31898307 DOI: 10.1007/s12011-019-02004-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 12/04/2019] [Indexed: 01/27/2023]
Abstract
Cadmium (Cd) is an environmental pollutant that induces reproductive toxicity by generating reactive oxygen species, which leads to oxidative stress. Euterpe oleracea fruits are known for being rich in oils containing triacylglycerol and phenolic compounds. They are considered as potent antioxidants to be used to counteract Cd effects within the testis. In the present study, adult males Swiss mice were treated with CdCl2 aqueous solution (4.28 mg/kg) by gavage for 7 days. The experimental groups were treated with Euterpe oleracea oil at the doses of 50, 100, and 150 mg/kg, for 42 days. The results showed that Cd intoxication led to increased tubular pathologies, such as reduction in epithelium height and area thus increasing both luminal diameter and tubule-epithelium ratio. Besides, Leydig cell's morphometry indicated reduction in nucleus and cytoplasm volumes of this cell type, which were recovered after E. oleracea oil intake. In addition, serum testosterone levels, testicular Mn and Zn concentrations, SOD and CAT activity, and germ cell viability increased after oil intake. Therefore, E. oleracea oil showed a regenerative effect in the testicular parenchyma negatively affected by Cd, mainly in the animals that received the highest oil concentration (150 mg/kg).
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Affiliation(s)
| | | | | | | | | | | | | | | | - Sérgio Luis Pinto da Matta
- Departament of General Biology, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil
- Departament of Animal Biology, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil
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17
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Almenara CCP, Oliveira TF, Padilha AS. The Role of Antioxidants in the Prevention of Cadmium-Induced Endothelial Dysfunction. Curr Pharm Des 2020; 26:3667-3675. [DOI: 10.2174/1381612826666200415172338] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 03/06/2020] [Indexed: 11/22/2022]
Abstract
Background:
Cadmium is a worldwide spread toxicant that accumulates in tissues and affects many
organs, mainly through oxidative damage. Oxidative stress is often associated with cardiovascular diseases and,
when it affects vessels, it induces endothelial dysfunction, which, in turn, could precipitate atherosclerosis and
hypertension. Therefore, it is reasonable to suggest antioxidant supplementation as a therapy against cadmiuminduced
endothelial dysfunction.
Objective:
This literature review aims to present the mechanisms involving oxidative stress in which cadmium
induces endothelial dysfunction and the benefits of antioxidant supplementation as a therapeutic strategy against
its harmful effects.
Methods:
On PubMed Central, articles that contemplated studies on cadmium intoxication and associated oxidative
stress with endothelial dysfunction as well as articles that reported the use of antioxidant supplementation in
an attempt to prevent or avoid endothelial dysfunction induced by cadmium exposure were selected.
Results:
Most of the studies that associated cadmium intoxication with endothelial dysfunction suggested oxidative
stress as the major mechanism for this damage. Furthermore, experimental studies also revealed that the
administration of substances with antioxidant properties, such as ascorbic acid and curcumin, has beneficial effects
on the prevention of such dysfunction, reducing reactive oxygen species within the vessels, preventing a
reduction in the amount of glutathione and the increase in blood pressure observed in animals exposed to cadmium.
Conclusion:
Antioxidant therapy demonstrated to be a potential treatment to reduce cardiovascular injuries provoked
by cadmium, but more studies are needed to determine the best antioxidant substance and dose to treat or
avoid this complication.
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Affiliation(s)
- Camila Cruz Pereira Almenara
- Department of Physiological Sciences, Federal University of Espírito Santo, Av. Marechal Campos 1468, Maruipe, 29042-755 - Vitoria, ES, Brazil
| | - Thiago F. Oliveira
- Department of Physiological Sciences, Federal University of Espírito Santo, Av. Marechal Campos 1468, Maruipe, 29042-755 - Vitoria, ES, Brazil
| | - Alessandra S. Padilha
- Department of Physiological Sciences, Federal University of Espírito Santo, Av. Marechal Campos 1468, Maruipe, 29042-755 - Vitoria, ES, Brazil
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18
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Cell organelles as targets of mammalian cadmium toxicity. Arch Toxicol 2020; 94:1017-1049. [PMID: 32206829 DOI: 10.1007/s00204-020-02692-8] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 02/25/2020] [Indexed: 02/07/2023]
Abstract
Ever increasing environmental presence of cadmium as a consequence of industrial activities is considered a health hazard and is closely linked to deteriorating global health status. General animal and human cadmium exposure ranges from ingestion of foodstuffs sourced from heavily polluted hotspots and cigarette smoke to widespread contamination of air and water, including cadmium-containing microplastics found in household water. Cadmium is promiscuous in its effects and exerts numerous cellular perturbations based on direct interactions with macromolecules and its capacity to mimic or displace essential physiological ions, such as iron and zinc. Cell organelles use lipid membranes to form complex tightly-regulated, compartmentalized networks with specialized functions, which are fundamental to life. Interorganellar communication is crucial for orchestrating correct cell behavior, such as adaptive stress responses, and can be mediated by the release of signaling molecules, exchange of organelle contents, mechanical force generated through organelle shape changes or direct membrane contact sites. In this review, cadmium effects on organellar structure and function will be critically discussed with particular consideration to disruption of organelle physiology in vertebrates.
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Mouro VGS, Siman VA, da Silva J, Dias FCR, Damasceno EM, Cupertino MDC, de Melo FCSA, da Matta SLP. Cadmium-Induced Testicular Toxicity in Mice: Subacute and Subchronic Route-Dependent Effects. Biol Trace Elem Res 2020; 193:466-482. [PMID: 31030385 DOI: 10.1007/s12011-019-01731-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 04/11/2019] [Indexed: 10/26/2022]
Abstract
This study aimed to compare Cd exposure by intraperitoneal (i.p.) and oral routes, evaluating the testicular subacute and subchronic effects. Adult male mice were separated into three groups subdivided according to the experimental period (7 and 42 days after Cd exposure: subacute and subchronic effects, respectively): one group received water and two groups received CdCl2 (1.2 mg/kg i.p. and 24 mg/kg oral). The testicular concentration of essential minerals and Cd, activity of antioxidant enzymes and markers of oxidative stress, histology, and testicular histomorphometry were evaluated. The subacute effect of oral Cd showed reduced Fe concentration, while Ca and Cu increased in this route. The subchronic effect promoted decreasing in Mg in i.p. and oral routes, whereas Zn decreased only in the oral, and the Fe concentration did not change. SOD activity decreased in the oral subacute evaluation and in both pathways, i.p. and oral routes, in the subchronic evaluation, while GST activity increased, and MDA concentration decreased. Labeling of apoptotic cells was increased in the subacute and subchronic evaluation. Seminiferous epithelium degeneration, death of germ cells, and Leydig cell damages occurred in i.p. and oral routes. However, these damages were more intense in the oral route, mainly evaluating the subchronic effects. The results confirm that the severity of Cd-induced testicular injury depends on the pathway, as well as the duration of exposure.
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Affiliation(s)
| | - Verônica Andrade Siman
- Department of Animal Biology, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil
| | - Janaína da Silva
- Department of General Biology, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil
| | | | | | | | | | - Sérgio Luis Pinto da Matta
- Department of General Biology, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil.
- Department of Animal Biology, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil.
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20
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Subacute Testicular Toxicity to Cadmium Exposure Intraperitoneally and Orally. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:3429635. [PMID: 31885783 PMCID: PMC6899267 DOI: 10.1155/2019/3429635] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 08/07/2019] [Accepted: 10/24/2019] [Indexed: 01/08/2023]
Abstract
The toxic effects of cadmium (Cd) on reproductive parameters are widely described in the literature. Experimental models often make use of the intraperitoneal route (i.p.), although human intoxication occurs preferentially by the oral route and can be continuous. However, little is known about the effect of Cd administration routes on the testicular structure. Thus, this study investigated the testicular impact of Cd exposure comparing both i.p. and oral routes, both single dose (SD), in addition to the oral route in fractional doses (FD). Swiss adult male mice received CdCl2 1.5 mg/kg i.p., 30 mg/kg oral SD, and 4.28 mg/kg oral FD for 7 consecutive days. The Cd bioaccumulation was observed in all routes, mainly in the oral FD route. The concentrations of testicular Ca and Cu decreased in all animals exposed to Cd, while Zn and Mn decreased only in the i.p. route. Testicular SOD activity was reduced in both routes of oral administration, while CAT increased in the i.p. route, and GST increased in all animals exposed to Cd. Changes in the tubular parameters and cell viability were observed in both routes of Cd administration but were more intense in the oral route, mainly in the FD. Serum testosterone concentration was reduced in both routes of oral administration. Tubular damage, such as the vacuolization of the seminiferous epithelium, germ cell detachment, and seminiferous tubule degeneration, occurred in all groups exposed to Cd. Therefore, the oral Cd administration presented greater potential to promote testicular damage, mainly when the metal was given in a fractionated way.
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21
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Mohamed NES. Effect of Aqueous Extract of Glycyrrhiza glabra on the Biochemical Changes Induced by Cadmium Chloride in Rats. Biol Trace Elem Res 2019; 190:87-94. [PMID: 30251228 DOI: 10.1007/s12011-018-1525-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 09/13/2018] [Indexed: 11/29/2022]
Abstract
Twenty four rats were divided into four groups (6 rats/group): 1-control group; 2-licorice (Glycyrrhiza glabra) extract: rats administered with an oral dose of licorice (3 mg/ml/kg/day) using stomach tube for 4 weeks; 3-cadmium chloride group: rats administered with an oral dose of CdCl2 (10 mg/kg/day) using stomach tube for 4 weeks; and 4-licorice extract + CdCl2 group: rats administered orally with both licorice (3 mg/ml/kg/day) and CdCl2 (10 mg/kg/day) using stomach tube for 4 weeks. Administration of CdCl2 induced significant increase in thiobarbituric acid reactive substance (TBARS), paraoxonase-1 (proxon-1), caspase-3 (casp-3) activities, and significant decrease in superoxide dismutase (SOD), catalase (CAT) activities, and glutathione (GSH) content in hepatic tissue. Significant increase in TBARS and kidney injury molecule-1 (KIM-1) and significant decrease in SOD, CAT activities, and GSH content in renal tissue were recorded. Significant increase in alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), gamma glutamyl transferase (GGT) activities, urea, creatinine, and significant decrease in butyryl choline esterase (BChE), total triiodothyronine (T3), and total thyroxin (T4) were recorded in serum. Histological investigation of renal cells showed vacuolations of endothelium lining glomerular tuffs and vacuolations of epithelium lining renal tubules. Investigation of ovarian tissue showed dilatation of interstitial blood vessels and congestion of multiple corpus luteum in CdCl2-treated rats. Significant improvements in the biochemical and histological changes were observed in CdCl2 + licorice extract group. It could be concluded that licorice extract alleviates the hazardous effects of cadmium chloride, which may be attributed to its antioxidant properties.
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Affiliation(s)
- Naglaa El-Shahat Mohamed
- Biological Applications Department, Nuclear Research Center, Atomic Energy Authority, P. No.13759, Abou Zaabel, Qalyoubiah, Egypt.
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22
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Pabis K, Gundacker C, Giacconi R, Basso A, Costarelli L, Piacenza F, Strizzi S, Provinciali M, Malavolta M. Zinc supplementation can reduce accumulation of cadmium in aged metallothionein transgenic mice. CHEMOSPHERE 2018; 211:855-860. [PMID: 30103140 DOI: 10.1016/j.chemosphere.2018.08.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 07/19/2018] [Accepted: 08/04/2018] [Indexed: 05/13/2023]
Abstract
Epidemiologic studies suggest that exposure to Cd is related to a multitude of age-related diseases. There is evidence that Cd toxicity emerges from an interference with Zn metabolism as they compete for the same binding sites of ligands. The most responsive proteins to Cd exposure are the metal-binding proteins termed metallothioneins (MTs), which display a much greater affinity for Cd than for Zn. Most studies have considered the effect of Zn on the accumulation of exogenous Cd and tissue damage, whereas observational studies have addressed the association between Zn intake and Cd levels in body fluids. However, it has not been addressed whether supplemental Zn can lower Cd levels in organs of healthy aged animals without affecting Cu stores, a question more pertinent to human aging. We therefore aimed to investigate the effect of Zn supplementation on Cd levels in liver and kidney of aged MT transgenic mice (MT1-tg) overexpressing MT1 at levels more comparable to those observed in humans than non-transgenic mice. We found a >30% reduction of kidney and liver Cd levels in Zn supplemented MT1-tg mice compared to non-supplemented controls, independently of the dose of Zn, without a significant reduction of Cu. Our data support the idea of a causal and inverse relationship between Zn intake and Cd content in organs of aged MT1-tg mice as suggested by observational studies in humans. Our work provides the rationale for interventional studies to address the effects of Zn supplementation on Cd burden in elderly people.
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Affiliation(s)
- Kamil Pabis
- Center for Pathobiochemistry and Genetics, Institute of Medical Genetics, Medical University of Vienna, 1090, Wien, Vienna, Austria
| | - Claudia Gundacker
- Center for Pathobiochemistry and Genetics, Institute of Medical Genetics, Medical University of Vienna, 1090, Wien, Vienna, Austria
| | - Robertina Giacconi
- Advanced Technology Center for Aging Research, Scientific Technological Area, IRCCS-INRCA, Ancona, Italy
| | - Andrea Basso
- Advanced Technology Center for Aging Research, Scientific Technological Area, IRCCS-INRCA, Ancona, Italy
| | - Laura Costarelli
- Advanced Technology Center for Aging Research, Scientific Technological Area, IRCCS-INRCA, Ancona, Italy
| | - Francesco Piacenza
- Advanced Technology Center for Aging Research, Scientific Technological Area, IRCCS-INRCA, Ancona, Italy
| | - Sergio Strizzi
- Department of Life and Environmental Sciences, Università Politecnica delle Marche, Ancona, Italy
| | - Mauro Provinciali
- Advanced Technology Center for Aging Research, Scientific Technological Area, IRCCS-INRCA, Ancona, Italy
| | - Marco Malavolta
- Advanced Technology Center for Aging Research, Scientific Technological Area, IRCCS-INRCA, Ancona, Italy.
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The mutagen and carcinogen cadmium is a high-affinity inhibitor of the zinc-dependent MutLα endonuclease. Proc Natl Acad Sci U S A 2018; 115:7314-7319. [PMID: 29941579 PMCID: PMC6048502 DOI: 10.1073/pnas.1807319115] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
MutLα (MLH1-PMS2 heterodimer) is an endonuclease that acts during an early step of eukaryotic mismatch repair. We show that human MutLα endonuclease copurifies with two equivalents of bound zinc, at least one of which resides within the endonuclease active site. We also show that cadmium, a known inhibitor of zinc-dependent enzymes and a potent mutagen and carcinogen, is a high-affinity inhibitor of MutLα endonuclease and that exogenous MutLα significantly reverses the mismatch repair defect in cadmium-treated human cell nuclear extract or nuclear extract prepared from cadmium-treated cells. Because the mutagenic action of cadmium is largely due to the selective inhibition of mismatch repair, these findings suggest that MutLα is a primary cadmium target for mutagenesis and presumably, carcinogenesis as well. MutLα (MLH1-PMS2 heterodimer), which acts as a strand-directed endonuclease during the initiation of eukaryotic mismatch repair, has been postulated to function as a zinc-dependent enzyme [Kosinski J, Plotz G, Guarné A, Bujnicki JM, Friedhoff P (2008) J Mol Biol 382:610–627]. We show that human MutLα copurifies with two bound zinc ions, at least one of which resides within the endonuclease active site, and that bound zinc is required for endonuclease function. Mutagenic action of the carcinogen cadmium, a known inhibitor of zinc-dependent enzymes, is largely due to selective inhibition of mismatch repair [Jin YH, et al. (2003) Nat Genet 34:326–329]. We show that cadmium is a potent inhibitor (apparent Ki ∼ 200 nM) of MutLα endonuclease and that cadmium inhibition is reversed by zinc. We also show that inhibition of mismatch repair in cadmium-treated nuclear extract is significantly reversed by exogenous MutLα but not by MutSα (MSH2-MSH6 heterodimer) and that MutLα reversal depends on integrity of the endonuclease active site. Exogenous MutLα also partially rescues the mismatch repair defect in nuclear extract prepared from cells exposed to cadmium. These findings indicate that targeted inhibition of MutLα endonuclease contributes to cadmium inhibition of mismatch repair. This effect may play a role in the mechanism of cadmium carcinogenesis.
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Vassallo DV, Almenara CCP, Broseghini-Filho GB, Teixeira AC, da Silva DCF, Angeli JK, Padilha AS. Preliminary Studies of Acute Cadmium Administration Effects on the Calcium-Activated Potassium (SKCa and BKCa) Channels and Na +/K +-ATPase Activity in Isolated Aortic Rings of Rats. Biol Trace Elem Res 2018; 183:325-334. [PMID: 28905315 DOI: 10.1007/s12011-017-1150-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 08/31/2017] [Indexed: 12/19/2022]
Abstract
Cadmium is an environmental pollutant closely linked with cardiovascular diseases that seems to involve endothelium dysfunction and reduced nitric oxide (NO) bioavailability. Knowing that NO causes dilatation through the activation of potassium channels and Na+/K+-ATPase, we aimed to determine whether acute cadmium administration (10 μM) alters the participation of K+ channels, voltage-activated calcium channel, and Na+/K+-ATPase activity in vascular function of isolated aortic rings of rats. Cadmium did not modify the acetylcholine-induced relaxation. After L-NAME addition, the relaxation induced by acetylcholine was abolished in presence or absence of cadmium, suggesting that acutely, this metal did not change NO release. However, tetraethylammonium (a nonselective K+ channels blocker) reduced acetylcholine-induced relaxation but this effect was lower in the preparations with cadmium, suggesting a decrease of K+ channels function in acetylcholine response after cadmium incubation. Apamin (a selective blocker of small Ca2+-activated K+ channels-SKCa), iberiotoxin (a selective blocker of large-conductance Ca2+-activated K+ channels-BKCa), and verapamil (a blocker of calcium channel) reduced the endothelium-dependent relaxation only in the absence of cadmium. Finally, cadmium decreases Na+/K+-ATPase activity. Our results provide evidence that the cadmium acute incubation unaffected the calcium-activated potassium channels (SKCa and BKCa) and voltage-calcium channels on the acetylcholine vasodilatation. In addition, acute cadmium incubation seems to reduce the Na+/K+-ATPase activity.
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Affiliation(s)
- Dalton V Vassallo
- Federal University of Espírito Santo, Graduate Program in Physiological Sciences, Vitória, ES, Brazil
| | - Camila C P Almenara
- Federal University of Espírito Santo, Graduate Program in Physiological Sciences, Vitória, ES, Brazil
| | | | - Ariane Calazans Teixeira
- Federal University of Espírito Santo, Graduate Program in Physiological Sciences, Vitória, ES, Brazil
| | - David Chaves F da Silva
- Federal University of Espírito Santo, Graduate Program in Physiological Sciences, Vitória, ES, Brazil
| | - Jhuli K Angeli
- Federal University of Espírito Santo, Graduate Program in Physiological Sciences, Vitória, ES, Brazil
| | - Alessandra S Padilha
- Federal University of Espírito Santo, Graduate Program in Physiological Sciences, Vitória, ES, Brazil.
- Programa de Pós-Graduação em Ciências Fisiológicas, CCS/UFES, Av. Marechal Campos, 1468. Maruípe, Vitoria, ES, 29040-091, Brazil.
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25
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Keypour H, Mahmoudabadi M, Shooshtari A, Bayat M, Mohsenzadeh F, Gable RW. Cadmium (II) macrocyclic Schiff-base complexes containing piperazine moiety: Synthesis, spectroscopic, X-ray structure, theoretical and antibacterial studies. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.10.074] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Kilicel F, Karapinar HS, Uğuz A. Determination of Some Heavy Metal Concentrations of Sage Tea with FAAS. INTERNATIONAL JOURNAL OF SECONDARY METABOLITE 2017. [DOI: 10.21448/ijsm.374637] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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de Angelis C, Galdiero M, Pivonello C, Salzano C, Gianfrilli D, Piscitelli P, Lenzi A, Colao A, Pivonello R. The environment and male reproduction: The effect of cadmium exposure on reproductive function and its implication in fertility. Reprod Toxicol 2017; 73:105-127. [PMID: 28774687 DOI: 10.1016/j.reprotox.2017.07.021] [Citation(s) in RCA: 152] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 07/11/2017] [Accepted: 07/26/2017] [Indexed: 12/22/2022]
Abstract
Cadmium is an environmental pollutant known as endocrine disruptor. Testis is particularly susceptible to cadmium, and testis injury occurs at high but even low levels of exposure. Cadmium reproductive toxicity is mediated by multiple mechanisms, including structural damage to testis vasculature and blood-testis barrier, inflammation, cytotoxicity on Sertoli and Leydig cells, oxidative stress mainly by means of mimicry and interference with essential ions, apoptosis, interference with selected signaling pathways and epigenetic regulation of genes involved in the regulation of reproductive function, and disturbance of the hypothalamus-pituitary-gonadal axis. The current review outlines epidemiological observational findings from environmental and occupational exposure in humans, and reports experimental studies in humans and animals. Lastly, a focus on the pathogenetic mechanisms of cadmium toxicity and on the specific mechanisms of cadmium sensitivity and resistance, particularly assessed in animal models, is included. Despite convincing experimental findings in animals and supporting evidences in humans identifying cadmium as reproductive toxicant, observational findings are controversial, suffering from heterogeneity of study design and pattern of exposure, and from co-exposure to multiple pollutants.
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Affiliation(s)
| | | | - Claudia Pivonello
- Dipartimento di Medicina Clinica e Chirurgia, Sezione di Endocrinologia, Università "Federico II" di Napoli, Naples, Italy.
| | - Ciro Salzano
- Dipartimento di Medicina Clinica e Chirurgia, Sezione di Endocrinologia, Università "Federico II" di Napoli, Naples, Italy.
| | - Daniele Gianfrilli
- Dipartimento di Medicina Sperimentale, Università di Roma "La Sapienza", Rome, Italy.
| | | | - Andrea Lenzi
- Dipartimento di Medicina Sperimentale, Università di Roma "La Sapienza", Rome, Italy.
| | - Annamaria Colao
- Dipartimento di Medicina Clinica e Chirurgia, Sezione di Endocrinologia, Università "Federico II" di Napoli, Naples, Italy.
| | - Rosario Pivonello
- Dipartimento di Medicina Clinica e Chirurgia, Sezione di Endocrinologia, Università "Federico II" di Napoli, Naples, Italy.
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Williams CR, MacDonald JW, Bammler TK, Paulsen MH, Simpson CD, Gallagher EP. From the Cover: Cadmium Exposure Differentially Alters Odorant-Driven Behaviors and Expression of Olfactory Receptors in Juvenile Coho Salmon (Oncorhynchus kisutch). Toxicol Sci 2016; 154:267-277. [PMID: 27621283 DOI: 10.1093/toxsci/kfw172] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Salmon exposed to waterborne metals can experience olfactory impairment leading to disrupted chemosensation. In the current study, we investigated the effects of cadmium (Cd) on salmon olfactory function by modeling an exposure scenario where juvenile salmon transiently migrate through a polluted waterway. Coho were exposed to environmentally relevant concentrations of waterborne Cd (2 and 30 µg/L) for 48 h and (0.3 and 2 μg/L) for 16 days, followed by a 16-day depuration associated with outmigration. Cadmium exposures inhibited behavioral responses towards L-cysteine and conspecific odorants, with effects persisting following the depuration. Behavioral alterations following the 30 µg/L exposure were associated with increased olfactory epithelial gene expression of metallothionein (mt1a) and heme oxygenase (hmox1); reduced expression of olfactory signal transduction (OST) molecules; and reduced expression of mRNAs encoding major coho odorant receptors (ORs). Salmon OR array analysis indicated that Cd preferentially impacted expression of OST and OR markers for ciliated olfactory sensory neurons (OSNs) relative to microvillus OSNs, suggesting a differential sensitivity of these two major OSN populations. Behavioral alterations on exposure to 0.3 and 2 µg/L Cd were associated with increased mt1a, but not with major histological or OR molecular changes, likely indicating disrupted OST as a major mechanism underlying the behavioral dysfunction at the low-level Cd exposures. Laser-ablation mass spectrometry analysis revealed that the OSN injury and behavioral dysfunction was associated with significant Cd bioaccumulation within the olfactory sensory epithelium. In summary, low-level Cd exposures associated with polluted waterways can induce differential and persistent olfactory dysfunction in juvenile coho salmon.
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Affiliation(s)
- Chase R Williams
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington 98105
| | - James W MacDonald
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington 98105
| | - Theo K Bammler
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington 98105
| | - Michael H Paulsen
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington 98105
| | - Christopher D Simpson
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington 98105
| | - Evan P Gallagher
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington 98105
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Choi S, Yu J. Understanding Interactions between Cellular Matrices and Metal Complexes: Methods To Improve Silver Nanodot-Specific Staining. Chemistry 2016; 22:12660-4. [DOI: 10.1002/chem.201602489] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Indexed: 01/14/2023]
Affiliation(s)
- Sungmoon Choi
- Department of Chemistry Education; Seoul National University; 1 Gwanak-Ro, Gwanak-Gu Seoul 151-742 South Korea
| | - Junhua Yu
- Department of Chemistry Education; Seoul National University; 1 Gwanak-Ro, Gwanak-Gu Seoul 151-742 South Korea
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Rajakumar S, Ravi C, Nachiappan V. Defect of zinc transporter ZRT1 ameliorates cadmium induced lipid accumulation in Saccharomyces cerevisiae. Metallomics 2016; 8:453-60. [PMID: 26999708 DOI: 10.1039/c6mt00005c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cadmium (Cd) is a non-essential divalent heavy metal that enters the cells by utilizing the transport pathways of the essential metals, like zinc (Zn), in Saccharomyces cerevisiae. This work focuses on Cd accumulation and its impact on deletion of Zn transporters Zrt1p and Zrt2p and lipid homeostasis. Cd exposure reduces the Zn levels in the mutant strains, and the effect was higher in zrt2Δ cells. Upon Cd exposure, the wild-type and zrt2Δ cells follow a similar pattern, but an opposite pattern was observed in zrt1Δ cells. The Cd influx and ROS levels were high in both wild-type cells and zrt2Δ cells but significantly reduced in zrt1Δ cells. Cd exposure led to accumulation of triacylglycerol and lipid droplets in wild-type cells and zrt2Δ cells but these levels were decreased in zrt1Δ cells. Hence, these studies suggest that the zrt1Δ cells provide resistance towards Cd and aid in the maintenance of lipid homeostasis in yeast cells.
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Affiliation(s)
- Selvaraj Rajakumar
- Biomembrane Lab, Department of Biochemistry, School of Life Sciences, Bharathidasan University, Tiruchirappalli 620024, Tamil Nadu, India.
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Treviño S, Andrade-García A, Herrera Camacho I, León-Chavez BA, Aguilar-Alonso P, Flores G, Brambila E. Chronic Cadmium Exposure Lead to Inhibition of Serum and Hepatic Alkaline Phosphatase Activity in Wistar Rats. J Biochem Mol Toxicol 2015. [PMID: 26214600 DOI: 10.1002/jbt.21732] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Alkaline phosphatase (ALP) activity in the serum and liver from rats administered with cadmium (Cd) in drinking water was studied. After metal administration, Cd showed a time-dependent accumulation in the liver, meanwhile metallothionein had a maximum increase at 1 month, remaining in this level until the end of the study. On the other hand, serum and liver ALP activity was decreased after 3 months exposure. To determine if Cd produced an inhibition on enzyme, apo-ALP prepared from both nonexposed and exposed rats was reactivated with Zn, showing 60% more activity as compared with the enzyme isolated from nonexposed rats. In vitro assays showed that Cd-ALP was partially reactivated with Zn; however, in the presence of cadmium, Zn-ALP was completely inhibited. Kinetic studies indicate a noncompetitive inhibition by Cd; these results suggest that Cd can substitute Zn, and/or Cd can interact with nucleophilic ligands essential for the enzymatic activity.
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Affiliation(s)
- Samuel Treviño
- Laboratorio de Investigaciones Químico Clínicas, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, México.
| | - Alejandra Andrade-García
- Laboratorio de Investigaciones Químico Clínicas, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, México
| | - Irma Herrera Camacho
- Área de Bioquímica y Biología Molecular, Instituto de Ciencias de la Benemérita Universidad Autónoma de Puebla, México
| | - Bertha Alicia León-Chavez
- Laboratorio de Investigaciones Químico Clínicas, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, México
| | - Patricia Aguilar-Alonso
- Laboratorio de Investigaciones Químico Clínicas, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, México
| | - Gonzalo Flores
- Instituto de Fisiología, Benemérita Universidad Autónoma de Puebla, México.,Departamento de Inorgánica, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, México
| | - Eduardo Brambila
- Laboratorio de Investigaciones Químico Clínicas, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, México
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Rosabal M, Pierron F, Couture P, Baudrimont M, Hare L, Campbell PGC. Subcellular partitioning of non-essential trace metals (Ag, As, Cd, Ni, Pb, and Tl) in livers of American (Anguilla rostrata) and European (Anguilla anguilla) yellow eels. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2015; 160:128-141. [PMID: 25635611 DOI: 10.1016/j.aquatox.2015.01.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 01/12/2015] [Accepted: 01/14/2015] [Indexed: 06/04/2023]
Abstract
We determined the intracellular compartmentalization of the trace metals Ag, As, Cd, Ni, Pb, and Tl in the livers of yellow eels collected from the Saint Lawrence River system in Canada (Anguilla rostrata) and in the area of the Gironde estuary in France (Anguilla anguilla). Differential centrifugation, NaOH digestion and thermal shock were used to separate eel livers into putative "sensitive" fractions (heat-denatured proteins, mitochondria and microsomes+lysosomes) and detoxified metal fractions (heat-stable peptides/proteins and granules). The cytosolic heat-stable fraction (HSP) was consistently involved in the detoxification of all trace metals. In addition, granule-like structures played a complementary role in the detoxification of Ni, Pb, and Tl in both eel species. However, these detoxification mechanisms were not completely effective because increasing trace metal concentrations in whole livers were accompanied by significant increases in the concentrations of most trace metals in "sensitive" subcellular fractions, that is, mitochondria, heat-denatured cytosolic proteins and microsomes+lysosomes. Among these "sensitive" fractions, mitochondria were the major binding sites for As, Cd, Pb, and Tl. This accumulation of non-essential metals in "sensitive" fractions likely represents a health risk for eels inhabiting the Saint Lawrence and Gironde environments.
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Affiliation(s)
- Maikel Rosabal
- Institut national de la recherche scientifique, Centre Eau Terre et Environnement (INRS-ETE), 490 de la Couronne, Québec (Québec) G1K 9A9, Canada
| | - Fabien Pierron
- Université de Bordeaux, UMR EPOC CNRS 5805, F-33400 Talence, France; CNRS, EPOC, UMR 5805, F-33400 Talence, France
| | - Patrice Couture
- Institut national de la recherche scientifique, Centre Eau Terre et Environnement (INRS-ETE), 490 de la Couronne, Québec (Québec) G1K 9A9, Canada
| | - Magalie Baudrimont
- Université de Bordeaux, UMR EPOC CNRS 5805, F-33400 Talence, France; CNRS, EPOC, UMR 5805, F-33400 Talence, France
| | - Landis Hare
- Institut national de la recherche scientifique, Centre Eau Terre et Environnement (INRS-ETE), 490 de la Couronne, Québec (Québec) G1K 9A9, Canada
| | - Peter G C Campbell
- Institut national de la recherche scientifique, Centre Eau Terre et Environnement (INRS-ETE), 490 de la Couronne, Québec (Québec) G1K 9A9, Canada.
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Ellairaja S, Manikandan R, Vijayan MT, Rajagopal S, Vasantha VS. A simple highly sensitive and selective TURN-ON fluorescent chemosensor for the detection of cadmium ions in physiological conditions. RSC Adv 2015. [DOI: 10.1039/c5ra10612e] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A very simple fluorophore was synthesized and applied as a chemosensor for Cd2+ion detection.
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Mera R, Torres E, Abalde J. Sulphate, more than a nutrient, protects the microalga Chlamydomonas moewusii from cadmium toxicity. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2014; 148:92-103. [PMID: 24463493 DOI: 10.1016/j.aquatox.2013.12.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Revised: 12/23/2013] [Accepted: 12/31/2013] [Indexed: 06/03/2023]
Abstract
Sulphur is an essential macroelement that plays important roles in living organisms. The thiol rich sulphur compounds, such as cysteine, γ-Glu-Cys, glutathione and phytochelatins participate in the tolerance mechanisms against cadmium toxicity. Plants, algae, yeasts and most prokaryotes cover their demand for reduced sulphur by reduction of inorganic sulphate. The aim of this study was to investigate, using a bifactorial experimental design, the effect of different sulphate concentrations in the nutrient solution on cadmium toxicity in the freshwater microalga Chlamydomonas moewusii. Cell growth, kinetic parameters of sulphate utilization and intracellular concentrations of low-molecular mass thiol compounds were determined. A mathematical model to describe the growth of this microalga based on the effects of sulphate and cadmium was obtained. An ANOVA revealed an interaction between them, 16% of the effect sizes was explained by this interaction. A higher amount of sulphate in the culture medium allowed a higher cadmium tolerance due to an increase in the thiol compound biosynthesis. The amount of low-molecular mass thiol compounds, mainly phytochelatins, synthesized by this microalga was significantly dependent on the sulphate and cadmium concentrations; the higher phytochelatin content was obtained in cultures with 4 mg Cd/L and 1mM sulphate. The maximum EC50 value (based on nominal cadmium concentration) reached for this microalga was 4.46 ± 0.42 mg Cd/L when the sulphate concentration added to the culture medium was also 1mM. An increase in the sulphate concentration, in deficient environments, could alleviate the toxic effect of this metal; however, a relative excess is also negative. The results obtained showed a substrate inhibition for this nutrient. An uncompetitive model for sulphate was chosen to establish the mathematical model that links both factors.
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Affiliation(s)
- Roi Mera
- Laboratorio de Microbiología, Facultad de Ciencias, Universidade da Coruña, Alejandro de La Sota, No. 1, 15008 La Coruña, Spain
| | - Enrique Torres
- Laboratorio de Microbiología, Facultad de Ciencias, Universidade da Coruña, Alejandro de La Sota, No. 1, 15008 La Coruña, Spain.
| | - Julio Abalde
- Laboratorio de Microbiología, Facultad de Ciencias, Universidade da Coruña, Alejandro de La Sota, No. 1, 15008 La Coruña, Spain
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Choong G, Liu Y, Templeton DM. Interplay of calcium and cadmium in mediating cadmium toxicity. Chem Biol Interact 2014; 211:54-65. [PMID: 24463198 DOI: 10.1016/j.cbi.2014.01.007] [Citation(s) in RCA: 161] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Revised: 12/31/2013] [Accepted: 01/13/2014] [Indexed: 01/30/2023]
Abstract
The environmentally important toxic metal, cadmium, exists as the Cd(2+) ion in biological systems, and in this state structurally resembles Ca(2+). Thus, although cadmium exerts a broad range of adverse actions on cells by virtue of its propensity to bind to protein thiol groups, it is now well appreciated that Cd(2+) participates in a number of Ca(2+)-dependent pathways, attributable to its actions as a Ca(2+) mimetic, with a central role for calmodulin, and the Ca(2+)/calmodlin-dependent protein kinase II (CaMK-II) that mediates effects on cytoskeletal dynamics and apoptotic cell death. Cadmium interacts with receptors and ion channels on the cell surface, and with the intracellular estrogen receptor where it binds competitively to residues shared by Ca(2+). It increases cytosolic [Ca(2+)] through several mechanisms, but also decreases transcript levels of some Ca(2+)-transporter genes. It initiates mitochondrial apoptotic pathways, and activates calpains, contributing to mitochondria-independent apoptosis. However, the recent discovery of the role CaMK-II plays in Cd(2+)-induced cell death, and subsequent implication of CaMK-II in Cd(2+)-dependent alterations of cytoskeletal dynamics, has opened a new area of mechanistic cadmium toxicology that is a focus of this review. Calmodulin is necessary for induction of apoptosis by several agents, yet induction of apoptosis by Cd(2+) is prevented by CaMK-II block, and Ca(2+)-dependent phosphorylation of CaMK-II has been linked to increased Cd(2+)-dependent apoptosis. Calmodulin antagonism suppresses Cd(2+)-induced phosphorylation of Erk1/2 and the Akt survival pathway. The involvement of CaMK-II in the effects of Cd(2+) on cell morphology, and particularly the actin cytoskeleton, is profound, favouring actin depolymerization, disrupting focal adhesions, and directing phosphorylated FAK into a cellular membrane. CaMK-II is also implicated in effects of Cd(2+) on microtubules and cadherin junctions. A key question for future cadmium research is whether cytoskeletal disruption leads to apoptosis, or rather if apoptosis initiates cytoskeletal disruption in the context of Cd(2+).
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Affiliation(s)
- Grace Choong
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto M5S 1A8, Canada
| | - Ying Liu
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto M5S 1A8, Canada
| | - Douglas M Templeton
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto M5S 1A8, Canada.
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Trabelsi H, Azzouz I, Ferchichi S, Tebourbi O, Sakly M, Abdelmelek H. Nanotoxicological evaluation of oxidative responses in rat nephrocytes induced by cadmium. Int J Nanomedicine 2013; 8:3447-53. [PMID: 24043937 PMCID: PMC3771854 DOI: 10.2147/ijn.s49323] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
The aim of this study was to investigate the interaction of cadmium chloride with mineral
elements in rat nephrocytes in terms of the biosynthesis of nanocomplexes. The results show that
selenium supplementation enhanced cadmium accumulation in kidneys. Analysis of the fluorescence
revealed an increase in red fluorescence in the kidneys of rats co-exposed to cadmium and selenium.
Interestingly, X-ray diffraction measurements carried out on kidney fractions of co-exposed rats
point to the biosynthesis of cadmium selenide and/or sulfide nanoparticles (about 62 nm in size).
Oxidative stress assays showed the ability of selenium to reduce lipid peroxidation and to restore
glutathione peroxidase and superoxide dismutase activity in kidneys. Hence, cadmium complexation
with selenium and sulfur at a nanoscale level could reduce oxidative stress induced by cadmium in
kidneys.
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Affiliation(s)
- Hamdi Trabelsi
- Laboratory of Integrative Physiology, Faculty of Sciences of Bizerte, Carthage University, Jarzouna, Tunisia
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López-Deber M, Aldrey A, Castro-Justo G, Fernández-Fernández MDC, García-González V, Bastida R, Macías A, Pérez-Lourido P, Valencia L. Cd(II) complexes with pendant armed oxa- and azamacrocyclic ligands. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.01.040] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Veljkovic AR, Nikolic RS, Kocic GM, Pavlovic DD, Cvetkovic TP, Sokolovic DT, Jevtovic TM, Basic JT, Laketic DM, Marinkovic MR, Stojanovic SR, Djordjevic BS, Krsmanovic MM. Protective effects of glutathione and lipoic acid against cadmium-induced oxidative stress in rat's kidney. Ren Fail 2012; 34:1281-7. [PMID: 23009295 DOI: 10.3109/0886022x.2012.723661] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Cadmium is a widespread, toxic industrial pollutant. The proximal tubule of the mammalian kidney is a major target of Cd-induced toxicity. We analyzed the effects of cadmium exposure on the model system of experimental animals, the thiobarbituric acid (TBA)-reactive substance (TBARS) level, and the activity of xanthine oxidase (XO) and catalase in kidney of rats, with and without glutathione and lipoic acid (LA). The experimental animals were classified into six groups, regarding cadmium, glutathione, and LA intake. The concentration of TBARSs in the homogenate was determined by spectrophotometric method according to Nabavi et al. The specific activity of XO was determined spectrophotometrically by the method of Aygul et al. Catalase activity in tissues was determined by spectrophotometric method according to Nabavi et al. The increased level of TBARS and the increased activity of XO in kidney tissue in cadmium poisoning are statistically significant compared to control (p < 0.001). Glutathione and LA applied along with cadmium lowered TBARS concentration and reduced XO activity (p < 0.001). Catalase activity in the kidney tissue was increased in the group, which was administered cadmium (p < 0.001). In conclusion, glutathione and LA, as physiological antioxidants applied with cadmium, have reduced the level of lipid peroxide and the activity of XO, and can be used as protectors in conditions of cadmium poisoning.
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Song Y, Zhang J, Yu S, Wang T, Cui X, Du X, Jia G. Effects of chronic chromium(vi) exposure on blood element homeostasis: an epidemiological study. Metallomics 2012; 4:463-72. [PMID: 22522219 DOI: 10.1039/c2mt20051a] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
One hundred chromate production workers chronically exposed to low-level of hexavalent chromium [Cr(vi)] and eighty healthy individuals free from Cr exposure were recruited to the study. Personal sampling of airborne Cr was conducted and Cr content was quantified by Flame Atomic Absorption Spectrometry (FAAS). At the end of the sampling shift, blood samples were collected and element concentrations were measured by inductively coupled plasma mass spectrometry (ICP-MS) for Cr, Cd, Cu, Mo and Se and inductively coupled plasma atomic emission spectrometry (ICP-AES) for Ca, Fe, Mg and Zn. According to our results, 90% of the chromate production workers were exposed to airborne Cr in a concentration lower than 50 μg m(-3), which is the threshold limit value recommended by the American Conference of Governmental Industrial Hygienists and Chinese Ministry of Health. After Cr(vi) exposure, a significant increase in blood Cr, Cd, Fe, Mg, Mo, Se and Zn concentrations was observed, as well as a significant decrease in Ca concentration. A decrease in blood Cu was only observed among female workers. Blood Cr concentrations of the exposed workers (median = 15.68 ng mL(-1)) was four times higher than that of the controls (median = 3.03 ng mL(-1)), and significantly correlated with airborne Cr (r = 0.568, P<0.001). In addition, the inter-element correlations exhibited significant differences between the two groups. Our findings of the related health effects suggested that the underlying mechanisms of chronic Cr(vi) exposure on blood element homeostasis might be partly explained by oxidative stress in the body, dysfunction of Fe metabolism and renal injury.
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Affiliation(s)
- Yanshuang Song
- Department of Occupational and Environmental Health Sciences, School of Public Health, Peking University, Beijing 100191, P R China
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Vlahović M, Mataruga VP, Ilijin L, Mrdaković M, Mirčić D, Todorović D, Lazarević J. Changes in activity of non-specific esterases in cadmium treated Lymantria dispar larvae. ECOTOXICOLOGY (LONDON, ENGLAND) 2012; 21:370-378. [PMID: 21983851 DOI: 10.1007/s10646-011-0798-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/20/2011] [Indexed: 05/31/2023]
Abstract
Many biochemical, physiological and histological criteria have been used as indicators of exposures and effects of the contaminants. These changes can indicate the response of an organism to a specific environmental stressor. In the present paper, the effect of the acute and chronic exposure to cadmium as well as recovery from two cadmium concentrations (10 and 30 μgCd/g dry food) on gypsy moth (Lymantria dispar) midgut esterases was investigated. The influence of cadmium on trait plasticity was also examined. Esterases showed great sensitivity to low metal concentrations during acute and chronic treatments. Their activities during short-term exposure and after recovery significantly depended on cadmium concentrations. The esterases had greater index of plasticity during chronic treatments with 10 and 30 μgCd/dry food. Five esterase isoforms between 64 and 250 kDa were detected. Isoforms of esterases exposed to any of the two cadmium effects differed among several egg-masses. Isozymes were distinguished in one egg-mass during different cadmium treatments. We conclude that these enzymes could be considered potential and sensitive non-selective biomarkers for the presence of cadmium in food.
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Affiliation(s)
- Milena Vlahović
- Department of Insect Physiology and Biochemistry, University of Belgrade, Belgrade, Serbia.
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Pillai P, Pandya C, Bhatt N, Gupta SS. Biochemical and reproductive effects of gestational/lactational exposure to lead and cadmium with respect to testicular steroidogenesis, antioxidant system, endogenous sex steroid and cauda-epididymal functions. Andrologia 2011; 44:92-101. [DOI: 10.1111/j.1439-0272.2010.01109.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Pandya C, Pillai P, Nampoothiri LP, Bhatt N, Gupta S, Gupta S. Effect of lead and cadmium co-exposure on testicular steroid metabolism and antioxidant system of adult male rats. Andrologia 2011; 44 Suppl 1:813-22. [PMID: 21933223 DOI: 10.1111/j.1439-0272.2010.01137.x] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
The mechanism of testicular toxicity of lead (Pb) and cadmium (Cd) is poorly understood. Previous studies focused on single metal-related changes in testicular toxicity. This study points towards the possible involvement of Pb- and Cd-induced oxidative stress in the suppression of steroidogenesis. The oxidative status of testis of adult male rats exposed to Pb acetate and cadmium acetate either alone or in combination at a dose of 0.025 mg kg(-1) body weight of metal intraperitoneally for 15 days was studied. Pb and Cd caused an increase in reactive oxygen species (ROS) by elevating testicular malondialdehydes (MDA) and decrease in activities of testicular antioxidant enzymes superoxide dismutase (SOD), catalase, glucose 6 phosphate dehydrogenase (G6PDH) and glutathione-S-transferase (GST) in mitochondrial and/or post-mitochondrial fraction. Activities of steroidogenic enzymes 3β and 17β-hydroxysteroid dehydrogenase also decreased significantly leading to altered testosterone production. Metal-exposed groups showed significantly decreased testicular and epididymal sperm count. Epididymal sperm motility and viability was also decreased on Pb and Cd exposure. Cd exposure showed more toxic effect than lead exposure, while combined exposure demonstrated least toxicity. In vitro experiments showed that vitamin C restores steroidogenic enzyme activities, suggesting that Pb- and Cd-induced ROS inhibits the testicular steroidogenesis.
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Affiliation(s)
- C Pandya
- Department of Biochemistry, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara, Gujarat, India
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Schmidt AC, Störr B, Kummer NA. Influence of one- and two-dimensional gel electrophoresis procedure on metal–protein bindings examined by electrospray ionization mass spectrometry, inductively coupled plasma mass spectrometry, and ultrafiltration. Talanta 2011; 85:1118-28. [DOI: 10.1016/j.talanta.2011.05.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2011] [Revised: 05/06/2011] [Accepted: 05/17/2011] [Indexed: 11/16/2022]
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Sheng L, Li L, Zhou J, Song G. Application of Cationic Gemini Surfactant 12-3-12 and Methylene Blue in Simple Detection of DNA and Investigation of Interaction Mechanism. J DISPER SCI TECHNOL 2011. [DOI: 10.1080/01932691.2010.488481] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Jemai H, Lachkar HA, Messaoudi I, Kerkeni A. Effects of zinc pre-treatment on blood glutathione, serum zinc and kidney histological organisation in male rats exposed to cadmium. J Trace Elem Med Biol 2010; 24:277-82. [PMID: 20833008 DOI: 10.1016/j.jtemb.2010.07.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2009] [Revised: 07/03/2010] [Accepted: 07/23/2010] [Indexed: 10/19/2022]
Abstract
The effects of sub-chronic exposure to cadmium (Cd) on the blood glutathione, serum zinc and on the kidney histological organisation in rats as well as the possible protective role of zinc (Zn) are the object of this study. For this purpose, 60 male Wistar rats (8 weeks old) were divided into three groups: the first group was exposed to Cd in the form of CdCl(2), administered in five doses (each of 0.4 mg Cd/kg b.w.) on days 5, 10, 15, 20 and 25, giving a total dose of 2mg Cd/kg b.w., i.p.; the second group was simultaneously exposed to Zn and Cd with the same timeline and the same doses of Cd as the first group but with, in addition, injections of Zn in the form of ZnCl(2), administered in doses of 0.8 mg Zn/kg b.w., giving a total dose of 4 mg Zn/kg b w, i.p.; a control group received 0.5 mL of physiological saline in an identical manner. Intoxication with Cd was followed by a significant decrease in blood glutathione, increase in oxidized glutathione as well as histological damage in kidneys. Pre-treatment with Zn exhibited a protective role against Cd toxicity with a significant decrease in serum zinc content. This fact may be explained by an excessive use of zinc in metallothionein synthesis as a cadmium detoxification agent.
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Affiliation(s)
- Hedya Jemai
- Laboratoire de Biophysique, Faculté de Médecine, 5000 Monastir, Tunisia.
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Alteration in the activity of oxidative enzymes in the tissues of male Wistar albino rats exposed to cadmium. Int J Occup Med Environ Health 2010; 23:55-62. [PMID: 20442063 DOI: 10.2478/v10001-010-0002-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
OBJECTIVE The objective of the present study was to investigate the effect of cadmium (Cd) on the activities of some oxidative enzymes [viz Aldehyde oxidase, AO (E.C. 1.2.3.1); Xanthine oxidase, XO (E.C. 1.2.3.2); Sulphite oxidase, SO (E.C.1.8.3.1.); and Monoamine oxidase, MO (E.C. 1.4.3.4)] in the liver and kidney. MATERIALS AND METHODS Male Wistar albino rats were administered 1, 2 and 4 mg Cd(2+)/kg body weight for one and three months. The activities of the oxidative enzymes were subsequently analyzed in the liver and kidney after both periods of exposure. RESULTS There was a dose dependent increase in liver and kidney Cd concentration in the test rats as compared to control after both periods of treatment with the liver retaining higher concentration of Cd than the kidney for each of the exposure dose. The oxidative enzymes were decreased in a dose dependent manner in the liver and kidney after both periods of treatment. The percentage inhibition of these enzymes was less in the liver of rats treated with Cd for three months relative to the one month treated rats for each of the exposure dose. Conversely, the inhibition of the activities of these enzymes in the kidney of rats in all the treatment groups was more pronounced after three months relative to the trend in the one month treated rats. However, the activities of the oxidative enzymes were higher in the liver as compared to the kidney in all the treatment groups after both durations of Cd treatment. CONCLUSION Based on the results obtained, it can be concluded that the inhibition of the oxidative enzymes by Cd may disturb metabolism of bioactive endogenous substances, exogenous components of food and some xenobiotics.
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Li Z, Gu JY, Wang XW, Fan QH, Geng YX, Jiao ZX, Hou YP, Wu WS. Effects of cadmium on absorption, excretion, and distribution of nickel in rats. Biol Trace Elem Res 2010; 135:211-9. [PMID: 19680608 DOI: 10.1007/s12011-009-8483-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2009] [Accepted: 07/21/2009] [Indexed: 10/20/2022]
Abstract
The effects of cadmium (Cd (II)) on absorption, excretion, and distribution of nickel (Ni (II)) were studied in rats using (63)Ni-NiCl(2) as radiotracer in the presence and absence of CdCl(2), through intraperitoneal injection (i.p.). The time-concentration curves in the blood were fitted with a two-compartment model. The peak time (t ((peak))) is 0.31 h in the absence of Cd (II), and it is 5.5 h in the presence of Cd (II). The levels of nickels were higher at 3 h and lower (close to zero) at 24 h in all organs of interest, except kidneys, in the absence of Cd (II). There still residue Ni (II) at 72 h post-injection in the presence of Cd (II). The Cd (II) did effect the total Ni (II) excretion 24 h post-injection. Our study showed that cadmium has a competitive effect on the absorption of nickel and an inhibitory effect on the elimination of it, so cadmium may induce the bioaccumulation of nickel in the body.
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Affiliation(s)
- Zhan Li
- Radiochemistry Laboratory, Lanzhou University, Lanzhou 73000, People's Republic of China
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Pandya CD, Pillai PP, Gupta SS. Lead and cadmium co-exposure mediated toxic insults on hepatic steroid metabolism and antioxidant system of adult male rats. Biol Trace Elem Res 2010; 134:307-17. [PMID: 19652923 DOI: 10.1007/s12011-009-8479-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2008] [Accepted: 07/17/2009] [Indexed: 11/27/2022]
Abstract
The redox status and steroid metabolism of liver of adult male rat exposed to lead (Pb) and cadmium (Cd) either alone or in co-exposure (0.025 mg/kg body weight intraperitoneally/15 days) was studied. Pb and Cd significantly accumulated in the liver. The activity of steroid metabolizing enzymes 17-betahydroxysteroid oxidoreductase and uridine diphosphate-glucuronyltransferase were decreased in experimental animals. 17-beta-Hydroxysteroid dehydrogenase was reduced to 33%, 38%, and 24% on treatment of Pb, Cd, and co-exposure (Pb + Cd). Furthermore, the activity of uridine diphosphate-glucuronosyltransferase was significantly reduced to 27% (Pb exposure), 36% (Cd exposure), and 25% (co-exposure of Pb + Cd). Cd exposure exhibited more toxic effect than Pb, while co-exposure demonstrated the least. The activities of antioxidant enzymes, superoxide dismutase, catalase, glutathione reductase, and glucose-6-phosphate dehydrogenase decreased and glutathione peroxidase increased in mitochondrial and post-mitochondrial fractions. The level of lipid peroxidation increased, and cellular glutathione concentration decreased. Hepatic DNA was decreased, whereas RNA content and the activity of alanine transaminase remained unchanged. Histological studies revealed that only Cd-exposed groups exhibited cytotoxic effect. These results suggest that when Pb and Cd are present together in similar concentrations, they exhibited relatively decreased toxic effect when compared to lead and cadmium in isolation with regard to decreased steroid metabolizing and antioxidant enzyme activities. This seems that the toxic effect of these metals is antagonized by co-exposure due to possible competition amongst Pb and Cd for hepatic accumulation.
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Affiliation(s)
- Chirayu D Pandya
- Department of Biochemistry, The Maharaja Sayajirao University of Baroda, Vadodara, Gujarat, India
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Sibous L, Bentouhami E, Maïza A, Bouet GM, Khan MA. Synthesis, Characterization and Electrochemical Behavior of CoII, NiII and CdII Complexes with N2O2 Donor Ligands Derived from 4,4′-Diaminobiphenyl and 2-Hydroxybenzaldehyde or 2,4-Dihydroxybenzaldehyde. J SOLUTION CHEM 2010. [DOI: 10.1007/s10953-010-9512-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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