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Baia-da-Silva DC, Mendes PFS, Silva DCBD, Chemelo VS, Bittencourt LO, Padilha PM, Oriá RB, Aschner M, Lima RR. What does scientometry tell us about mercury toxicology and its biological impairments? Heliyon 2024; 10:e27526. [PMID: 38586377 PMCID: PMC10998116 DOI: 10.1016/j.heliyon.2024.e27526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 02/29/2024] [Accepted: 03/01/2024] [Indexed: 04/09/2024] Open
Abstract
Mercury is a toxic pollutant that poses risks to both human and environmental health, making it a pressing public health concern. This study aimed to summarize the knowledge on mercury toxicology and the biological impairments caused by exposure to mercury in experimental studies and/or diagnosis in humans. The research was conducted on the main collection of Web of Science, employing as a methodological tool a bibliometric analysis. The selected articles were analyzed, and extracted data such as publication year, journal, author, title, number of citations, corresponding author's country, keywords, and the knowledge mapping was performed about the type of study, chemical form of mercury, exposure period, origin of exposure, tissue/fluid of exposure measurement, mercury concentration, evaluation period (age), mercury effect, model experiments, dose, exposure pathway, and time of exposure. The selected articles were published between 1965 and 2021, with Clarkson TW being the most cited author who has also published the most articles. A total of 38% of the publications were from the USA. These studies assessed the prenatal and postnatal effects of mercury, emphasizing the impact of methylmercury on neurodevelopment, including motor and cognitive evaluations, the association between mercury and autism, and an evaluation of its protective effects against mercury toxicity. In observational studies, the blood, umbilical cord, and hair were the most frequently used for measuring mercury levels. Our data analysis reveals that mercury neurotoxicology has been extensively explored, but the association among the outcomes evaluated in experimental studies has yet to be strengthened. Providing metric evidence on what is unexplored allows for new studies that may help governmental and non-governmental organizations develop guidelines and policies.
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Affiliation(s)
- Daiane Claydes Baia-da-Silva
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, PA, Brazil
| | - Paulo Fernando Santos Mendes
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, PA, Brazil
| | - Diane Cleydes Baia da Silva
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, PA, Brazil
| | - Victória Santos Chemelo
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, PA, Brazil
| | - Leonardo Oliveira Bittencourt
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, PA, Brazil
| | - Pedro Magalhães Padilha
- School of Veterinary Medicine and Animal Science, Institute of Biosciences, São Paulo State University, Botucatu, SP, Brazil
| | - Reinaldo Barreto Oriá
- Laboratory of Tissue Healing, Ontogeny and Nutrition, Department of Morphology, School of Medicine, Institute of Biomedicine, Federal University of Ceara, Fortaleza, CE, Brazil
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Rafael Rodrigues Lima
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, PA, Brazil
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2
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Rajendran HK, Deen MA, Ray JP, Singh A, Narayanasamy S. Harnessing the Chemical Functionality of Metal-Organic Frameworks Toward Removal of Aqueous Pollutants. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:3963-3983. [PMID: 38319923 DOI: 10.1021/acs.langmuir.3c02668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
Wastewater treatment has been bestowed with a plethora of materials; among them, metal-organic frameworks (MOFs) are one such kind with exceptional properties. Besides their application in gas adsorption and storage, they are applied in many fields. In orientation toward wastewater treatment, MOFs have been and are being successfully employed to capture a variety of aqueous pollutants, including both organic and inorganic ones. This review sheds light on the postsynthetic modifications (PSMs) performed over MOFs to adsorb and degrade recalcitrant. Modifications performed on the metal nodes and the linkers have been explained with reference to some widely used chemical modifications like alkylation, amination, thiol addition, tandem modifications, and coordinate modifications. The boost in pollutant removal efficacy, reaction rate, adsorption capacity, and selectivity for the modified MOFs is highlighted. The rationale and the robustness of micromotor MOFs, i.e., MOFs with motor activity, and their potential application in the capture of toxic pollutants are also presented for readers. This review also discusses the challenges and future recommendations to be considered in performing PSM over a MOF concerning wastewater treatment.
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Affiliation(s)
- Harish Kumar Rajendran
- Biochemical and Environmental Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Mohammed Askkar Deen
- Biochemical and Environmental Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Jyoti Prakash Ray
- Biochemical and Environmental Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Anushka Singh
- Biochemical and Environmental Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Selvaraju Narayanasamy
- Biochemical and Environmental Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
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3
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Huertas-Abril PV, Jurado J, Prieto-Álamo MJ, García-Barrera T, Abril N. Proteomic analysis of the hepatic response to a pollutant mixture in mice. The protective action of selenium. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 903:166558. [PMID: 37633382 DOI: 10.1016/j.scitotenv.2023.166558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 08/22/2023] [Accepted: 08/23/2023] [Indexed: 08/28/2023]
Abstract
Metals and pharmaceuticals contaminate water and food worldwide, forming mixtures where they can interact to enhance their individual toxicity. Here we use a shotgun proteomic approach to evaluate the toxicity of a pollutant mixture (PM) of metals (As, Cd, Hg) and pharmaceuticals (diclofenac, flumequine) on mice liver proteostasis. These pollutants are abundant in the environment, accumulate in the food chain, and are toxic to humans primarily through oxidative damage. Thus, we also evaluated the putative antagonistic effect of low-dose dietary supplementation with the antioxidant trace element selenium. A total of 275 proteins were affected by PM treatment. Functional analyses revealed an increased abundance of proteins involved in the integrated stress response that promotes translation, the inflammatory response, carbohydrate and lipid metabolism, and the sustained expression of the antioxidative response mediated by NRF2. As a consequence, a reductive stress situation arises in the cell that inhibits the RICTOR pathway, thus activating the early stage of autophagy, impairing xenobiotic metabolism, and potentiating lipid biosynthesis and steatosis. PM exposure-induced hepato-proteostatic alterations were significantly reduced in Se supplemented mice, suggesting that the use of this trace element as a dietary supplement may at least partially ameliorate liver damage caused by exposure to environmental mixtures.
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Affiliation(s)
- Paula V Huertas-Abril
- Department of Biochemistry and Molecular Biology, University of Córdoba, Campus de Rabanales, Edificio Severo Ochoa, E-14071 Córdoba, Spain
| | - Juan Jurado
- Department of Biochemistry and Molecular Biology, University of Córdoba, Campus de Rabanales, Edificio Severo Ochoa, E-14071 Córdoba, Spain
| | - María-José Prieto-Álamo
- Department of Biochemistry and Molecular Biology, University of Córdoba, Campus de Rabanales, Edificio Severo Ochoa, E-14071 Córdoba, Spain
| | - Tamara García-Barrera
- Research Center of Natural Resources, Health, and the Environment (RENSMA), Department of Chemistry, Faculty of Experimental Sciences, Campus El Carmen, University of Huelva, Fuerzas Armadas Ave., 21007 Huelva, Spain
| | - Nieves Abril
- Department of Biochemistry and Molecular Biology, University of Córdoba, Campus de Rabanales, Edificio Severo Ochoa, E-14071 Córdoba, Spain.
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4
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Cyr AP, Drew KA, Corsetti S, Seitz AC, Sutton TM, López JA, Wooller MJ, O'Hara T. Ecotoxicology of mercury concentrations in arctic lamprey (Lethenteron camtschaticum). ENVIRONMENTAL RESEARCH 2023; 237:116955. [PMID: 37643685 PMCID: PMC10838160 DOI: 10.1016/j.envres.2023.116955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 08/10/2023] [Accepted: 08/21/2023] [Indexed: 08/31/2023]
Abstract
Arctic lamprey (Lethenteron camtschaticum) is an important dietary resource for rural and indigenous communities in parts of Alaska, with some commercial use. As with many fish species harvested for human consumption, there are concerns regarding mercury concentrations ([Hg]) in Arctic lamprey that may impact human health. To date, information regarding the life cycle and diet of Arctic lamprey is scarce, with no published studies examining [Hg] in Arctic lamprey tissues. Our goals were to investigate the feeding ecology of Arctic lamprey from the Bering Sea, determine how diet and potential dietary shifts might influence [Hg] in muscle, and determine if current [Hg] may pose a human health risk. The mean total [Hg] in Arctic lamprey muscle (n = 98) was 19 ng/g wet-weight. Log transformed total [Hg] were not associated with any measured biological variables including length, mass, δ13C values, or δ15N values. A stable isotope mixing model estimated that capelin (Mallotus villosus) accounted for 40.0 ± 4.0% of the Arctic lamprey diet, while Pacific sand lance (Ammodytes hexapterus) and Pacific herring (Clupea pallasii) accounted for 37.8 ± 3.1% and 22.2 ± 3.5% respectively. Finally, diet percentage compositions shifted based on size class (i.e., medium versus large). These results indicated that feeding location, bioaccumulation, and biomagnification are not important drivers of [Hg] in Arctic lamprey and current [Hg] do not pose a human health risk. Taken together, this research further expands our knowledge of Arctic lamprey trophic ecology in the eastern Bering Sea.
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Affiliation(s)
- Andrew P Cyr
- Department of Veterinary Medicine, University of Alaska Fairbanks, 901 Koyukuk Drive, Fairbanks, AK 99775-7750, USA.
| | - Katie A Drew
- College of Fisheries and Ocean Sciences, 2150 Koyukuk Drive, Fairbanks, AK 99775-7220, USA
| | - Sierra Corsetti
- Department of Biology and Wildlife, PO Box 756100, Fairbanks, AK 99775-6100, USA
| | - Andrew C Seitz
- College of Fisheries and Ocean Sciences, 2150 Koyukuk Drive, Fairbanks, AK 99775-7220, USA
| | - Trent M Sutton
- College of Fisheries and Ocean Sciences, 2150 Koyukuk Drive, Fairbanks, AK 99775-7220, USA
| | - J Andrés López
- College of Fisheries and Ocean Sciences, 2150 Koyukuk Drive, Fairbanks, AK 99775-7220, USA; University of Alaska Museum of the North, University of Alaska, Fairbanks, 907 Yukon Drive, Fairbanks, AK 99775-6960, USA
| | - Matthew J Wooller
- College of Fisheries and Ocean Sciences, 2150 Koyukuk Drive, Fairbanks, AK 99775-7220, USA; Water and Environmental Research Center, Institute of Northern Engineering, 306 Tanana Loop, Fairbanks, AK 99775-5910, USA; Alaska Stable Isotope Facility, University of Alaska, Fairbanks, 907 Yukon Drive, Fairbanks, AK 99775-5910, USA
| | - Todd O'Hara
- Water and Environmental Research Center, Institute of Northern Engineering, 306 Tanana Loop, Fairbanks, AK 99775-5910, USA; Bilingual Laboratory of Toxicology, Veterinary Integrative Biosciences, School of Veterinary Medicine & Biomedical Sciences, Texas A&M University, College Station, TX, 77843, USA
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5
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Doroudian M, Thibault ME, Gailer J. N-Acetylcysteine Displaces Glutathionyl-Moieties from Hg 2+ and MeHg + to Form More Hydrophobic Complexes at Near-Physiological Conditions. Molecules 2023; 28:6762. [PMID: 37836605 PMCID: PMC10574133 DOI: 10.3390/molecules28196762] [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: 08/19/2023] [Revised: 09/19/2023] [Accepted: 09/19/2023] [Indexed: 10/15/2023] Open
Abstract
The anthropogenic release of Hg is associated with an increased human exposure risk. Since Hg2+ and MeHg+ have a high affinity for thiols, their interaction with L-glutathione (GSH) within mammalian cells is fundamentally involved in their toxicological chemistry and excretion. To gain insight into the interaction of these mercurials with multiple small molecular weight thiols, we have investigated their competitive interactions with GSH and N-acetylcysteine (NAC) at near-physiological conditions, using a liquid chromatographic approach. This approach involved the injection of each mercurial onto a reversed-phase (RP)-HPLC column (37 °C) using a PBS buffer mobile phase containing 5.0 mM GSH to simulate cytosolic conditions with Hg being detected in the column effluent by an inductively coupled plasma atomic emission spectrometer (ICP-AES). When the 5.0 mM GSH mobile phase was amended with up to 10 mM NAC, gradually increasing retention times of both mercurials were observed. To explain this behavior, the experiment with 5.0 mM NAC and 5.0 mM GSH was replicated using 50 mM Tris buffer (pH 7.4), and the Hg-containing fractions were analyzed by electrospray ionization mass spectrometry. The results revealed the presence of Hg(GS)(NAC) and Hg(NAC)2 for Hg2+ and MeHg(GS) and MeHg(NAC) for MeHg+, which suggests that the coordination/displacement of GS-moieties from each mercurial by the more hydrophobic NAC can explain their retention behavior. Since the biotransformations of both mercurials were observed at near-physiological conditions, they are of toxicological relevance as they provide a biomolecular explanation for some results that were obtained when animals were administered with each mercurial and NAC.
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Affiliation(s)
| | | | - Jürgen Gailer
- Department of Chemistry, University of Calgary, Calgary, AB T2N 1N4, Canada; (M.D.); (M.E.T.)
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6
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Dey A, Flajšhans M, Pšenička M, Gazo I. DNA repair genes play a variety of roles in the development of fish embryos. Front Cell Dev Biol 2023; 11:1119229. [PMID: 36936683 PMCID: PMC10014602 DOI: 10.3389/fcell.2023.1119229] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 02/14/2023] [Indexed: 03/08/2023] Open
Abstract
Embryogenesis is one of the most important life stages because it determines an organism's healthy growth. However, embryos of externally fertilizing species, such as most fish, are directly exposed to the environment during development and may be threatened by DNA damaging factors (pollutants, UV, reactive oxygen species). To counteract the negative effects of DNA fragmentation, fish embryos evolved complex damage response pathways. DNA repair pathways have been extensively studied in some fish species, such as zebrafish (Danio rerio). Our literature review, on the other hand, revealed a paucity of knowledge about DNA damage response and repair in non-model aquaculture fish species. Further, several pieces of evidence underlie the additional role of DNA repair genes and proteins in organogenesis, spatiotemporal localization in different tissue, and its indispensability for normal embryo development. In this review, we will summarize features of different DNA repair pathways in course of fish embryo development. We describe how the expression of DNA repair genes and proteins is regulated during development, their organogenetic roles, and how the expression of DNA repair genes changes in response to genotoxic stress. This will aid in addressing the link between genotoxic stress and embryo phenotype. Furthermore, available data indicate that embryos can repair damaged DNA, but the effects of early-life stress may manifest later in life as behavioral changes, neoplasia, or neurodegeneration. Overall, we conclude that more research on DNA repair in fish embryos is needed.
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7
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Yoo JW, Jeon M, Lee KW, Jung JH, Jeong CB, Lee YM. The single and combined effects of mercury and polystyrene plastic beads on antioxidant-related systems in the brackish water flea: toxicological interaction depending on mercury species and plastic bead size. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2022; 252:106325. [PMID: 36242789 DOI: 10.1016/j.aquatox.2022.106325] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 08/29/2022] [Accepted: 10/09/2022] [Indexed: 06/16/2023]
Abstract
Plastics are considered as a major threat to marine environments owing their high usage, persistence, and negative effects on aquatic organisms. Although they often exist as mixtures in combination with other pollutants (e.g., mercury (Hg)) in aquatic ecosystems, the combined effects of plastics and ambient pollutants remain unclear. Therefore, in the present study, we investigated the toxicological interactions between Hg and plastics using two Hg species (HgCl2 and MeHgCl) and different-sized polystyrene (PS) beads (diameter: 0.05, 0.5, and 6-μm) in the brackish water flea Diaphanosoma celebensis. The single and combined effects of Hg and PS beads on mortality were investigated, and changes in the antioxidant system and lipid peroxidation were further analyzed. After 48-h exposure to single Hg, HgCl2 induced a higher mortality rate than MeHgCl. The combined exposure test showed that 0.05-μm PS beads can enhance the toxicity of both the Hg species. The expression of GST-mu, glutathione S-transferease (GST) activity and malondialdehyde (MDA) content increased significantly after exposure to Hg alone (HgCl2 or MeHgCl) exposure. Combined exposure with PS beads modulated the effects of Hg on the antioxidant system depending on bead size and the Hg species. In particular, the 0.05-μm beads significantly increased the expression level of GST-mu, GST activity and MDA content, regardless of Hg species. These findings suggest that toxicological interactions between Hg and PS beads depend on the type of Hg species and the size of PS beads; nano-sized 0.05-μm PS beads can induce synergistic toxicity with Hg.
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Affiliation(s)
- Je-Won Yoo
- Department of Biotechnology, College of Convergence Engineering, Sangmyung University, Seoul, 03016, Republic of Korea
| | - MinJeong Jeon
- Department of Biotechnology, College of Convergence Engineering, Sangmyung University, Seoul, 03016, Republic of Korea
| | - Kyun-Woo Lee
- Korea Institute of Ocean Science and Technology, 385, Haeyang-ro, Youngdo, Busan, 49111, South Korea
| | - Jee-Hyun Jung
- Risk Assessment Research Center, Korea Institute of Ocean Science and Technology, Geoje, 53201, Republic of Korea; Department of Ocean Science, Korea University of Science and Technology, Daejeon, 34113, Republic of Korea
| | - Chang-Bum Jeong
- Department of Marine Science, College of Natural Sciences, Incheon National University, Incheon, 22012, Republic of Korea.
| | - Young-Mi Lee
- Department of Biotechnology, College of Convergence Engineering, Sangmyung University, Seoul, 03016, Republic of Korea.
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8
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Berntsson E, Sardis M, Noormägi A, Jarvet J, Roos PM, Tõugu V, Gräslund A, Palumaa P, Wärmländer SKTS. Mercury Ion Binding to Apolipoprotein E Variants ApoE2, ApoE3, and ApoE4: Similar Binding Affinities but Different Structure Induction Effects. ACS OMEGA 2022; 7:28924-28931. [PMID: 36033665 PMCID: PMC9404194 DOI: 10.1021/acsomega.2c02254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 07/29/2022] [Indexed: 06/15/2023]
Abstract
Mercury intoxication typically produces more severe outcomes in people with the APOE-ε4 gene, which codes for the ApoE4 variant of apolipoprotein E, compared to individuals with the APOE-ε2 and APOE-ε3 genes. Why the APOE-ε4 allele is a risk factor in mercury exposure remains unknown. One proposed possibility is that the ApoE protein could be involved in clearing of heavy metals, where the ApoE4 protein might perform this task worse than the ApoE2 and ApoE3 variants. Here, we used fluorescence and circular dichroism spectroscopies to characterize the in vitro interactions of the three different ApoE variants with Hg(I) and Hg(II) ions. Hg(I) ions displayed weak binding to all ApoE variants and induced virtually no structural changes. Thus, Hg(I) ions appear to have no biologically relevant interactions with the ApoE protein. Hg(II) ions displayed stronger and very similar binding affinities for all three ApoE isoforms, with K D values of 4.6 μM for ApoE2, 4.9 μM for ApoE3, and 4.3 μM for ApoE4. Binding of Hg(II) ions also induced changes in ApoE superhelicity, that is, altered coil-coil interactions, which might modify the protein function. As these structural changes were most pronounced in the ApoE4 protein, they could be related to the APOE-ε4 gene being a risk factor in mercury toxicity.
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Affiliation(s)
- Elina Berntsson
- Department
of Chemistry and Biotechnology, Tallinn
University of Technology, 12618 Tallinn, Estonia
- Department
of Biochemistry and Biophysics, Stockholm
University, 106 91 Stockholm, Sweden
| | - Merlin Sardis
- Department
of Chemistry and Biotechnology, Tallinn
University of Technology, 12618 Tallinn, Estonia
| | - Andra Noormägi
- Department
of Chemistry and Biotechnology, Tallinn
University of Technology, 12618 Tallinn, Estonia
| | - Jüri Jarvet
- Department
of Biochemistry and Biophysics, Stockholm
University, 106 91 Stockholm, Sweden
- The
National Institute of Chemical Physics and Biophysics, 12618 Tallinn, Estonia
- CellPept
Sweden AB, Kvarngatan
10B, 118 47 Stockholm, Sweden
| | - Per M. Roos
- Institute
of Environmental Medicine, Karolinska Institutet, 171 77 Stockholm, Sweden
- Department
of Clinical Physiology, Capio Saint Göran
Hospital, 112 19 Stockholm, Sweden
| | - Vello Tõugu
- Department
of Chemistry and Biotechnology, Tallinn
University of Technology, 12618 Tallinn, Estonia
| | - Astrid Gräslund
- Department
of Biochemistry and Biophysics, Stockholm
University, 106 91 Stockholm, Sweden
- CellPept
Sweden AB, Kvarngatan
10B, 118 47 Stockholm, Sweden
| | - Peep Palumaa
- Department
of Chemistry and Biotechnology, Tallinn
University of Technology, 12618 Tallinn, Estonia
| | - Sebastian K. T. S. Wärmländer
- Department
of Biochemistry and Biophysics, Stockholm
University, 106 91 Stockholm, Sweden
- CellPept
Sweden AB, Kvarngatan
10B, 118 47 Stockholm, Sweden
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9
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Malankar GS, Shelar DS, M M, Patra M, Butcher RJ, Manjare ST. A BOPHY based fluorescent probe for Hg 2+via NTe 2 chelation. Dalton Trans 2022; 51:10069-10076. [PMID: 35727017 DOI: 10.1039/d2dt01086k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A BOPHY-based organotellurium-containing probe was synthesized and characterized via single crystal XRD for the selective and sensitive detection of Hg2+ over other metal ions. The probe detects Hg2+ in less than 1 s with a 2.5-fold enhancement in fluorescent intensity. Due to the chalcogenophilicity of mercury, Hg2+ was facilely trapped in the NTe2 chelating cavity of the probe. The probe can detect Hg2+ in the nanomolar range (62 nM) and it showed reversibility with S2- ions. The sensitivity of the probe for the detection of Hg2+ was confirmed in living HeLa cells.
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Affiliation(s)
- Gauri S Malankar
- Department of Chemistry, University of Mumbai, Mumbai, 400098, India.
| | - Divyesh S Shelar
- Department of Chemistry, University of Mumbai, Mumbai, 400098, India.
| | - Manikandan M
- Department of Chemical Science, Tata Institute of Fundamental Research, Mumbai, 400005, India.
| | - Malay Patra
- Department of Chemical Science, Tata Institute of Fundamental Research, Mumbai, 400005, India.
| | | | - Sudesh T Manjare
- Department of Chemistry, University of Mumbai, Mumbai, 400098, India.
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10
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Forero-Rodríguez LJ, Josephs-Spaulding J, Flor S, Pinzón A, Kaleta C. Parkinson's Disease and the Metal-Microbiome-Gut-Brain Axis: A Systems Toxicology Approach. Antioxidants (Basel) 2021; 11:71. [PMID: 35052575 PMCID: PMC8773335 DOI: 10.3390/antiox11010071] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 12/02/2021] [Accepted: 12/17/2021] [Indexed: 12/14/2022] Open
Abstract
Parkinson's Disease (PD) is a neurodegenerative disease, leading to motor and non-motor complications. Autonomic alterations, including gastrointestinal symptoms, precede motor defects and act as early warning signs. Chronic exposure to dietary, environmental heavy metals impacts the gastrointestinal system and host-associated microbiome, eventually affecting the central nervous system. The correlation between dysbiosis and PD suggests a functional and bidirectional communication between the gut and the brain. The bioaccumulation of metals promotes stress mechanisms by increasing reactive oxygen species, likely altering the bidirectional gut-brain link. To better understand the differing molecular mechanisms underlying PD, integrative modeling approaches are necessary to connect multifactorial perturbations in this heterogeneous disorder. By exploring the effects of gut microbiota modulation on dietary heavy metal exposure in relation to PD onset, the modification of the host-associated microbiome to mitigate neurological stress may be a future treatment option against neurodegeneration through bioremediation. The progressive movement towards a systems toxicology framework for precision medicine can uncover molecular mechanisms underlying PD onset such as metal regulation and microbial community interactions by developing predictive models to better understand PD etiology to identify options for novel treatments and beyond. Several methodologies recently addressed the complexity of this interaction from different perspectives; however, to date, a comprehensive review of these approaches is still lacking. Therefore, our main aim through this manuscript is to fill this gap in the scientific literature by reviewing recently published papers to address the surrounding questions regarding the underlying molecular mechanisms between metals, microbiota, and the gut-brain-axis, as well as the regulation of this system to prevent neurodegeneration.
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Affiliation(s)
- Lady Johanna Forero-Rodríguez
- Research Group Bioinformatics and Systems Biology, Instituto de Genetica, Universidad Nacional de Colombia, Bogotá 111321, Colombia; (L.J.F.-R.); (A.P.)
- Research Group Medical Systems Biology, Christian-Albrechts-Universität Kiel, Brunswiker Straße 10, 24105 Kiel, Germany; (S.F.); (C.K.)
| | - Jonathan Josephs-Spaulding
- Research Group Medical Systems Biology, Christian-Albrechts-Universität Kiel, Brunswiker Straße 10, 24105 Kiel, Germany; (S.F.); (C.K.)
| | - Stefano Flor
- Research Group Medical Systems Biology, Christian-Albrechts-Universität Kiel, Brunswiker Straße 10, 24105 Kiel, Germany; (S.F.); (C.K.)
| | - Andrés Pinzón
- Research Group Bioinformatics and Systems Biology, Instituto de Genetica, Universidad Nacional de Colombia, Bogotá 111321, Colombia; (L.J.F.-R.); (A.P.)
| | - Christoph Kaleta
- Research Group Medical Systems Biology, Christian-Albrechts-Universität Kiel, Brunswiker Straße 10, 24105 Kiel, Germany; (S.F.); (C.K.)
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11
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Khair A, Awal MA, Hoque MN, Talukder AK, Das ZC, Rao DR, Shamsuddin M. Spirulina ameliorates arsenic induced reproductive toxicity in male rats. Anim Reprod 2021; 18:e20210035. [PMID: 34868368 PMCID: PMC8628875 DOI: 10.1590/1984-3143-ar2021-0035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 10/06/2021] [Indexed: 11/22/2022] Open
Abstract
Spirulina (Spirulina platensis), has numerous health benefits including antioxidant, immunomodulatory, and anti-inflammatory activities, works against heavy metal toxicity, and is often used as a food supplement in human, animals, birds and fishes. This study aimed to evaluate the protective ability of the dietary spirulina against the toxic effects of inorganic arsenic (iAs) on male reproductive parameters in rats. Seventy-two mature Long-Evans male rats, dividing into six groups (T0, T1, T2, T3, T4 and T5) (12 rats/group) were included in this study. The T3, T4 and T5 group rats were treated with three consecutive doses (1.0 g, 1.5 g and 2.0 g/kg feed) of spirulina in feed along with 3.0 mg NaAsO2/kg body weight (BW) in drinking water (DW) daily for 90 days. Each rat of group T1 received NaAsO2 (3.0 mg/kg BW) in DW, and those of T2 group were fed with spirulina (2.0 g/kg feed) daily for 90 days. The rats of group T0 served as the control with normal feed and water. Total arsenic (tAs) contents, reproductive parameters (testicular weight, sperm motility and morphology), and histological changes in the testicles were evaluated in these rats. Arsenic dosing significantly (p=0.003, Kruskal-Wallis test) increased the tAs contents in the testicles, decreased testes weight, sperm morphology and motility compared to the controls. The effect of arsenic dosing was also evidenced by the histological changes like decreased germinal layers in the seminiferous tubules of the treated rats. Moreover, dietary spirulina (2.0 g/kg feed) supplementation significantly (p=0.011, Kruskal-Wallis test) lowered tAs contents in testicles and increases testes weights, sperm motility and morphology. Therefore, spirulina can be used as an effective dietary supplement to ameliorate the adverse effects of arsenic induced reproductive toxicities. However, further study is required to elucidate the underlying molecular mechanisms of reduction of arsenic induced reproductive toxicity by spirulina.
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Affiliation(s)
- Abul Khair
- Quality Control Laboratory, Department of Livestock Services, Savar, Dhaka, Bangladesh.,Department of Pharmacology, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Mohammed Abdul Awal
- Department of Pharmacology, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Mohammed Nazmul Hoque
- Department of Gynecology, Obstetrics & Reproductive Health, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
| | - Anup Kumar Talukder
- Department of Gynecology, Obstetrics & Reproductive Health, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
| | - Ziban Chandra Das
- Department of Gynecology, Obstetrics & Reproductive Health, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
| | | | - Mohammed Shamsuddin
- Livestock Officer, Food and Agriculture Organization of the United Nations, Rome, Italy
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Singh A, Singh A, Kociok‐Köhn G, Trivedi M, Kumar A. New mercury(II) halide complexes with neutral ferrocene functionalized thiazolidine‐2‐thiones: Crystallographic and computational analyses. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6299] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Ayushi Singh
- Department of Chemistry, Faculty of Science University of Lucknow Lucknow 226007 India
| | - Amita Singh
- Department of Chemistry, Faculty of Science University of Lucknow Lucknow 226007 India
- Department of Chemistry Dr. Ram Manohar Lohiya Avadh University Ayodhya 224001 India
| | - Gabriele Kociok‐Köhn
- Materials and Chemical Characterisation Facility MC2 University of Bath Bath BA2 7AY UK
| | - Manoj Trivedi
- Department of Chemistry, Sri Venkateswara College University of Delhi Delhi 110021 India
| | - Abhinav Kumar
- Department of Chemistry, Faculty of Science University of Lucknow Lucknow 226007 India
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13
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The Aging Kidney-As Influenced by Heavy Metal Exposure and Selenium Supplementation. Biomolecules 2021; 11:biom11081078. [PMID: 34439746 PMCID: PMC8391790 DOI: 10.3390/biom11081078] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 07/12/2021] [Accepted: 07/16/2021] [Indexed: 12/29/2022] Open
Abstract
The aging process in the kidneys has been well studied. It is known that the glomerular filtration rate (GFR) declines with age in subjects older than 50–60 years. However, there is still insufficient knowledge regarding the response of the aged kidney to environmental toxicants such as mercury, cadmium, and lead. Here, we present a review on the functional decline and proposed mechanisms in the aging kidney as influenced by metal pollutants. Due to the prevalence of these toxicants in the environment, human exposure is nearly unavoidable. Further, it is well known that acute and chronic exposures to toxic metals may be detrimental to kidneys of normal adults, thus it may be hypothesized that exposure of individuals with reduced GFR will result in additional reductions in renal function. Individuals with compromised renal function, either from aging or from a combination of aging and disease, may be particularly susceptible to environmental toxicants. The available data appear to show an association between exposure to mercury, cadmium and/or lead and an increase in incidence and severity of renal disease in elderly individuals. Furthermore, some physiological thiols, as well as adequate selenium status, appear to exert a protective action. Further studies providing improved insight into the mechanisms by which nephrotoxic metals are handled by aging kidneys, as well as possibilities of therapeutic protection, are of utmost importance.
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Zhang L, Xing L, Liu J, Qi T, Li M, Wang L. Synchronous catalysis of sulfite oxidation and abatement of Hg2+ in wet desulfurization using one-pot synthesized Co-TUD-1/S. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118546] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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15
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Christakis CA, Barkay T, Boyd ES. Expanded Diversity and Phylogeny of mer Genes Broadens Mercury Resistance Paradigms and Reveals an Origin for MerA Among Thermophilic Archaea. Front Microbiol 2021; 12:682605. [PMID: 34248899 PMCID: PMC8261052 DOI: 10.3389/fmicb.2021.682605] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 05/28/2021] [Indexed: 11/13/2022] Open
Abstract
Mercury (Hg) is a highly toxic element due to its high affinity for protein sulfhydryl groups, which upon binding, can destabilize protein structure and decrease enzyme activity. Prokaryotes have evolved enzymatic mechanisms to detoxify inorganic Hg and organic Hg (e.g., MeHg) through the activities of mercuric reductase (MerA) and organomercury lyase (MerB), respectively. Here, the taxonomic distribution and evolution of MerAB was examined in 84,032 archaeal and bacterial genomes, metagenome assembled genomes, and single-cell genomes. Homologs of MerA and MerB were identified in 7.8 and 2.1% percent of genomes, respectively. MerA was identified in the genomes of 10 archaeal and 28 bacterial phyla previously unknown to code for this functionality. Likewise, MerB was identified in 2 archaeal and 11 bacterial phyla previously unknown to encode this functionality. Surprisingly, homologs of MerB were identified in a number of genomes (∼50% of all MerB-encoding genomes) that did not encode MerA, suggesting alternative mechanisms to detoxify Hg(II) once it is generated in the cytoplasm. Phylogenetic reconstruction of MerA place its origin in thermophilic Thermoprotei (Crenarchaeota), consistent with high levels of Hg(II) in geothermal environments, the natural habitat of this archaeal class. MerB appears to have been recruited to the mer operon relatively recently and likely among a mesophilic ancestor of Euryarchaeota and Thaumarchaeota. This is consistent with the functional dependence of MerB on MerA and the widespread distribution of mesophilic microorganisms that methylate Hg(II) at lower temperature. Collectively, these results expand the taxonomic and ecological distribution of mer-encoded functionalities, and suggest that selection for Hg(II) and MeHg detoxification is dependent not only on the availability and type of mercury compounds in the environment but also the physiological potential of the microbes who inhabit these environments. The expanded diversity and environmental distribution of MerAB identify new targets to prioritize for future research.
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Affiliation(s)
- Christos A. Christakis
- Department of Microbiology and Immunology, Montana State University, Bozeman, MT, United States
| | - Tamar Barkay
- Department of Biochemistry and Microbiology, Rutgers, The State University of New Jersey, New Brunswick, NJ, United States
| | - Eric S. Boyd
- Department of Microbiology and Immunology, Montana State University, Bozeman, MT, United States
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Rahimzadeh MR, Rahimzadeh MR, Kazemi S, Moghadamnia AA. Zinc Poisoning - Symptoms, Causes, Treatments. Mini Rev Med Chem 2021; 20:1489-1498. [PMID: 32286942 DOI: 10.2174/1389557520666200414161944] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 11/14/2019] [Accepted: 01/02/2020] [Indexed: 01/19/2023]
Abstract
Zinc poisoning has been reported from many parts of the world. It is one of the global health problems that affect many organs, if exposed by inhalation of zinc vapors or by consumption of contaminated food and water. Long term exposure to zinc compounds from different sources such as air, water, soil, and food, lead to toxic effects on body systems, especially digestive, respiratory, and nerve systems, and also causes cancer. Zinc levels can be determined in blood, urine, hair, and nails. Patients with zinc toxicity need chelating agents, other pharmacological treatment, protective lung ventilation, extracorporeal membrane oxygenation (ECMO), and supportive care.
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Affiliation(s)
- Mehrdad Rafati Rahimzadeh
- Mobility Impairment Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
| | | | - Sohrab Kazemi
- Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
| | - Ali Akbar Moghadamnia
- Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
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Spiller HA, Hays HL, Casavant MJ. Rethinking treatment of mercury poisoning: the roles of selenium, acetylcysteine, and thiol chelators in the treatment of mercury poisoning: a narrative review. TOXICOLOGY COMMUNICATIONS 2021. [DOI: 10.1080/24734306.2020.1870077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Affiliation(s)
- Henry A. Spiller
- Central Ohio Poison Center, Nationwide Children’s Hospital, Columbus, OH, USA
- Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Hannah L. Hays
- Central Ohio Poison Center, Nationwide Children’s Hospital, Columbus, OH, USA
- Departments of Emergency Medicine and Pediatrics, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Marcel J. Casavant
- Central Ohio Poison Center, Nationwide Children’s Hospital, Columbus, OH, USA
- Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, USA
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18
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Blood donation and heavy metal poisoning in developing nations: Any link? Transfus Apher Sci 2021; 60:103067. [PMID: 33541762 DOI: 10.1016/j.transci.2021.103067] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 01/04/2021] [Accepted: 01/09/2021] [Indexed: 11/24/2022]
Abstract
Long term health effects of heavy metal exposure from both occupational and environmental settings involve multi-organ toxicities including but not limited to disturbances of neurological, cognitive, and metabolic processes, immune system dysregulation, carcinogenesis and sometimes permanent disabilities. Humans are exposed to toxic metals through various sources and routes of entry. The risk of heavy metal poisoning from donor blood has been the subject of many scientific investigations. In this review we highlight how the access to a safe and adequate blood transfusion with minimal risk of toxic metals to recipients is a public health challenge, especially in developing nations. For quality assurance purposes, blood donors are screened for various blood-borne pathogens, but screening for toxic metal levels is not routine. Evidence from scientific studies used in this review lends credence to the risk of heavy metal poisoning from donors with high blood concentrations of these heavy metals. The risk of toxicity is exceptionally high in vulnerable populations such as neonates and preterm infants, as well as in pregnant women and other individuals with conditions requiring multiple blood transfusions. This is worse in developing countries where some members of the population engage in illegal refining and artisanal mining activities. In order to reduce toxic metal exposure in vulnerable populations, blood meant for transfusion in vulnerable subjects, e.g. children, should be routinely screened for heavy metal concentrations. Patients receiving multiple blood transfusions should also be monitored for iron overload and its attendant toxicities.
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Associations of Metabolic Genes ( GSTT1, GSTP1, GSTM1) and Blood Mercury Concentrations Differ in Jamaican Children with and without Autism Spectrum Disorder. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18041377. [PMID: 33546147 PMCID: PMC7913200 DOI: 10.3390/ijerph18041377] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 01/27/2021] [Accepted: 01/30/2021] [Indexed: 12/12/2022]
Abstract
We investigated interactive roles of three metabolic glutathione S-transferase (GST) genes (GSTP1, GSTT1, and GSTM1) and autism spectrum disorder (ASD) status in relation to blood Hg concentrations (BHC) of Jamaican children. We used data from 266 children (2-8 years) with ASD and their 1:1 age- and sex-matched typically developing (TD) controls. After adjusting General Linear Models for child’s age, socioeconomic status, consumption of leafy vegetables, fried plantain, canned fish, and the interaction between GSTP1 and GSTT1, we found significant interactions between GSTP1 and ASD status in relation to BHC either in a co-dominant or dominant genetic model for GSTP1(P < 0.001, P = 0.007, respectively). In the co-dominant model for the Ile105Val GSTP1 polymorphism, geometric mean (GM) BHC in ASD cases with genotype Ile/Ile were significantly higher than in cases with the Ile/Val genotype (0.73 vs. 0.48 µg/L, P = 0.01). In contrast, in TD controls with the Ile/Val genotype GM BHC were significantly higher than in those with the Ile/Ile genotype (0.72 vs. 0.49 µg/L, P = 0.03) or the Val/Val genotype (0.72 vs. 0.51 µg/L, P = 0.04). Although our findings are consistent with the role of GSTP1 in detoxification of Hg, replication in other populations is warranted.
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20
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Branco V, Aschner M, Carvalho C. Neurotoxicity of mercury: an old issue with contemporary significance. ADVANCES IN NEUROTOXICOLOGY 2021; 5:239-262. [PMID: 34263092 PMCID: PMC8276940 DOI: 10.1016/bs.ant.2021.01.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Mercury exerts a variety of toxic effects, depending on the specific compound and route of exposure. However, neurotoxicity in virtue of its consequence to health causes the greatest concern for toxicologists. This is particularly true regarding fetal development, where neurotoxic effects are much more severe than in adults, and the toxicity threshold is lower. Here, we review the major concepts regarding the neurotoxicity of mercury compounds (mercury vapor; methylmercury and ethylmercury), from exposure routes to toxicokinetic particularities leading to brain deposition and the development of neurotoxic effects. Albeit research on the neurotoxicity of mercury compounds has significantly advanced from the second half of the twentieth century onwards, several grey areas regarding the mechanism of toxicity still exist. Thus, we emphasize research advances during the last two decades concerning the molecular interactions of mercury which cause neurotoxic effects. Highlights include the disruption of glutamate signaling and excitotoxicity resulting from exposure to mercury and the interaction with redox active residues such as cysteines and selenocysteines which are the premise accounting for the disruption of redox homeostasis caused by mercurials. We also address how immunotoxic effects at the CNS, namely microglia and astrocyte activation modulate developmental neurotoxicity, a major topic in contemporary research.
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Affiliation(s)
- Vasco Branco
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, USA
| | - Cristina Carvalho
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
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Rajak C, Singh N, Parashar P. Metal toxicity and natural antidotes: prevention is better than cure. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:43582-43598. [PMID: 32951168 DOI: 10.1007/s11356-020-10783-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 09/09/2020] [Indexed: 06/11/2023]
Abstract
Toxicity due to heavy metals (HM), specifically mercury (Hg), arsenic (As), lead (Pb), and cadmium (Cd) remains a challenge to scientists till date. This review gives insights into natural antidotes for the management and prevention of HM toxicity. Various databases such as PubMed, Embase, and Science Direct were searched for available facts on natural antidotes and their commercial products against HM toxicity till date. Toxicity owing to such metals needs prevention rather than therapy. Natural antidotes, fruits and vegetables, rich in antioxidant are the answers to such toxicities. Synthetic chelators impart a major drawback of removing essential metals required for normal body function, along with the toxic one. Natural antioxidants are bestowed with scavenging and chelation properties and can be alternative for synthetic chelating agents. Natural compounds are abundantly available, economic, and have minimal side effects when compared with classical chelators. Prevention is better than cure and thus adding plentiful vegetables and fruits to our diet can combat HM toxicity-related illness. Graphical abstract.
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Affiliation(s)
- Chetan Rajak
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Near CRPF Base Camp, Ahmadpur urf Kamlapur, Bijnor-Sisendi Road, Sarojini Nagar, Lucknow, Uttar Pradesh, 226002, India
| | - Neelu Singh
- Department of Pharmaceutical Sciences, Babasaheb Bhimrao Ambedkar University (A Central University), Vidya Vihar, Raebareli Road, Lucknow, UP, 226025, India
| | - Poonam Parashar
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Near CRPF Base Camp, Ahmadpur urf Kamlapur, Bijnor-Sisendi Road, Sarojini Nagar, Lucknow, Uttar Pradesh, 226002, India.
- Department of Pharmaceutical Sciences, Babasaheb Bhimrao Ambedkar University (A Central University), Vidya Vihar, Raebareli Road, Lucknow, UP, 226025, India.
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Piscopo M, Notariale R, Tortora F, Lettieri G, Palumbo G, Manna C. Novel Insights into Mercury Effects on Hemoglobin and Membrane Proteins in Human Erythrocytes. Molecules 2020; 25:molecules25143278. [PMID: 32707650 PMCID: PMC7397049 DOI: 10.3390/molecules25143278] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 07/16/2020] [Accepted: 07/18/2020] [Indexed: 12/20/2022] Open
Abstract
Mercury (Hg) is a global environmental pollutant that affects human and ecosystem health. With the aim of exploring the Hg-induced protein modifications, intact human erythrocytes were exposed to HgCl2 (1-60 µM) and cytosolic and membrane proteins were analyzed by SDS-PAGE and AU-PAGE. A spectrofluorimetric assay for quantification of Reactive Oxygen Species (ROS) generation was also performed. Hg2+ exposure induces alterations in the electrophoretic profile of cytosolic proteins with a significant decrease in the intensity of the hemoglobin monomer, associated with the appearance of a 64 kDa band, identified as a mercurized tetrameric form. This protein decreases with increasing HgCl2 concentrations and Hg-induced ROS formation. Moreover, it appears resistant to urea denaturation and it is only partially dissociated by exposure to dithiothreitol, likely due to additional protein-Hg interactions involved in aggregate formation. In addition, specific membrane proteins, including band 3 and cytoskeletal proteins 4.1 and 4.2, are affected by Hg2+-treatment. The findings reported provide new insights into the Hg-induced possible detrimental effects on erythrocyte physiology, mainly related to alterations in the oxygen binding capacity of hemoglobin as well as decreases in band 3-mediated anion exchange. Finally, modifications of cytoskeletal proteins 4.1 and 4.2 could contribute to the previously reported alteration in cell morphology.
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Affiliation(s)
- Marina Piscopo
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy;
- Correspondence: (M.P.); (C.M.)
| | - Rosaria Notariale
- Department of Precision Medicine, School of Medicine, University of Campania “Luigi Vanvitelli”, via Luigi de Crecchio, 80138 Naples, Italy; (R.N.); (F.T.)
| | - Fabiana Tortora
- Department of Precision Medicine, School of Medicine, University of Campania “Luigi Vanvitelli”, via Luigi de Crecchio, 80138 Naples, Italy; (R.N.); (F.T.)
| | - Gennaro Lettieri
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy;
| | - Giancarlo Palumbo
- Department of Economics, Management, Institutions, University of Naples Federico II, via Cupa Nuova Cinthia, 80126 Naples, Italy;
| | - Caterina Manna
- Department of Precision Medicine, School of Medicine, University of Campania “Luigi Vanvitelli”, via Luigi de Crecchio, 80138 Naples, Italy; (R.N.); (F.T.)
- Correspondence: (M.P.); (C.M.)
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Kazdal F, Bahadori F, Celik B, Ertas A, Topcu G. Inhibition of Amyloid β Aggregation Using Optimized Nano-Encapsulated Formulations of Plant Extracts with High Metal Chelator Activities. Curr Pharm Biotechnol 2020; 21:681-701. [DOI: 10.2174/1389201021666191210125851] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Revised: 08/02/2019] [Accepted: 11/21/2019] [Indexed: 12/21/2022]
Abstract
Background:
The role of Fe+2, Cu+2 and Zn+2 in facilitating aggregation of Amyloid β (Aβ)
and consequently, the progression of Alzheimer's disease (AD) is well established.
Objective:
Development of non-toxic metal chelators is an emerging era in the treatment of AD, in
which complete success has not been fully achieved. The purpose of this study was to determine plant
extracts with high metal chelator and to encapsulate them in nano-micellar systems with the ability to
pass through the Blood Brain Barrier (BBB).
Method:
Extracts of 36 different Anatolian plants were prepared, total phenolic and flavonoid contents
were determined, and the extracts with high content were examined for their Fe+2, Cu+2 and Zn+2
chelating activities. Apolipoprotein E4 (Apo E) decorated nano-formulations of active extracts were
prepared using Poly (Lactide-co-Glycolide) (PLGA) (final product ApoEPLGA) to provide BBB penetrating
property.
Results:
Verbascum flavidum aqueous extract was found as the most active sample, incubation of
which, with Aβ before and after metal-induced aggregation, resulted in successful inhibition of aggregate
formation, while re-solubilization of pre-formed aggregates was not effectively achieved. The
same results were obtained using ApoEPLGA.
Conclusion:
An optimized metal chelator nano-formulation with BBB penetrating ability was prepared
and presented for further in-vivo studies.
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Affiliation(s)
- Fatma Kazdal
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Bezmialem Vakif University, 34093, Fatih-Istanbul, Turkey
| | - Fatemeh Bahadori
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Bezmialem Vakif University, 34093, Fatih-Istanbul, Turkey
| | - Burak Celik
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Bezmialem Vakif University, 34093, Fatih-Istanbul, Turkey
| | - Abdulselam Ertas
- Department of Pharmacognosy, Faculty of Pharmacy, Dicle University, 21280 Diyarbakır, Turkey
| | - Gulacti Topcu
- Department of Pharmacognosy, Faculty of Pharmacy, Bezmialem Vakif University, 34093, Fatih- Istanbul, Turkey
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Lead, Mercury and Cadmium in Fish and Shellfish from the Indian Ocean and Red Sea (African Countries): Public Health Challenges. JOURNAL OF MARINE SCIENCE AND ENGINEERING 2020. [DOI: 10.3390/jmse8050344] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The main aim of this review was to assess the incidence of Pb, Hg and Cd in seafood from African countries on the Indian and the Red Sea coasts and the level of their monitoring and control, where the direct consumption of seafood without quality control are frequently due to the poverty in many African countries. Some seafood from African Indian and the Red Sea coasts such as mollusks and fishes have presented Cd, Pb and Hg concentrations higher than permitted limit by FAOUN/EU regulations, indicating a possible threat to public health. Thus, the operationalization of the heavy metals (HM) monitoring and control is strongly recommended since these countries have laboratories with minimal conditions for HM analysis.
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Modified expression of antioxidant genes in lobster cockroach, Nauphoeta cinerea exposed to methylmercury and monosodium glutamate. Chem Biol Interact 2020; 318:108969. [DOI: 10.1016/j.cbi.2020.108969] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 01/19/2020] [Accepted: 01/27/2020] [Indexed: 12/21/2022]
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Chennuri K, Chakraborty P, Jayachandran S, Mohakud SK, Ishita I, Ramteke D, Padalkar PP, Babu PC, Babu KR. Operationally defined mercury (Hg) species can delineate Hg bioaccumulation in mangrove sediment systems: A case study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 701:134842. [PMID: 31734484 DOI: 10.1016/j.scitotenv.2019.134842] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 09/26/2019] [Accepted: 10/04/2019] [Indexed: 06/10/2023]
Abstract
This study investigated the linkage between mercury (Hg) speciation in the surficial sediments from a mangrove ecosystem of the Zuari Estuary, west coast of India, with Hg bioaccumulation in gastropods collected from the same area. Multiple operationally defined protocols and methods were used for determination of Hg speciation study in the mangrove sediments. Moderately low concentrations of Hg were observed in the sediments, ranging from 37.3 ± 1.9 to 79.6 ± 4.0 µg/kg. Geochemical fractionation showed that a significant part of sedimentary Hg was present within the structure of the sediment (residual fraction) and not bioavailable. Non-residual Hg was primarily associated with oxidizable (sedimentary organic matter (SOM) or sulfide) binding phase of the sediments, and ranged from 9.2 ± 0.3 to 78.5 ± 3.9 µg/kg. Concentration of methylmercury (MeHg) (a neurotoxin) in the sediments varied from 1.7 ± 0.1 to 4.4 ± 0.1 µg/kg. l-Cysteine, a suitable complexing ligand, extractable Hg concentration in the sediments ranged from 4.3 ± 0.1 to 15.9 ± 0.3 µg/kg. Statistical analysis suggested that MeHg was adsorbed on Fe/Mn oxyhydroxide phases in the sediments. l-Cysteine was found to extract sedimentary MeHg and thermodynamically less stable Hg-SOM complexes from the sediments. Concentrations of bioaccumulated Hg in soft tissues of the gastropod, Pirenella cingulata, ranged from 57.6 ± 4.4 to 224.4 ± 7.2 µg/kg. Positive correlations existed between the concentration of bioaccumulated Hg in the gastropods and the concentrations of Hg associated with the oxidizable phase, sedimentary MeHg and l-Cysteine extracted Hg in the sediments. This study indicated that operationally defined Hg species can be useful in estimating bioavailable Hg to obligatory deposit feeder in tropical mangrove systems.
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Affiliation(s)
- Kartheek Chennuri
- Geological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Goa 403004, India
| | - Parthasarathi Chakraborty
- Geological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Goa 403004, India; Centre for Oceans, Rivers, Atmosphere and Land Sciences, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India.
| | - Saranya Jayachandran
- Centre for Oceans, Rivers, Atmosphere and Land Sciences, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
| | - Sandip Kumar Mohakud
- Geological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Goa 403004, India
| | - Ishita Ishita
- Geological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Goa 403004, India
| | - Darwin Ramteke
- Geological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Goa 403004, India
| | - Prasad Pramod Padalkar
- Centre for Oceans, Rivers, Atmosphere and Land Sciences, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
| | - Prakash C Babu
- Geological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Goa 403004, India
| | - Korupolu Raghu Babu
- Department of Engineering Chemistry, Andhra University, Visakhapatnam, Andhra Pradesh 530003, India
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Ando M, Yamada T, Okinaga Y, Taguchi E, Sugimoto Y, Takeuchi A, Itoh T, Fukuda T, Tsukamasa Y. Evaluation of the inhibition of mercury absorption by vegetable juices using a red sea bream intestine model. Food Chem 2020; 303:125351. [DOI: 10.1016/j.foodchem.2019.125351] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 05/16/2019] [Accepted: 08/09/2019] [Indexed: 10/26/2022]
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Caglayan C, Kandemir FM, Darendelioğlu E, Yıldırım S, Kucukler S, Dortbudak MB. Rutin ameliorates mercuric chloride-induced hepatotoxicity in rats via interfering with oxidative stress, inflammation and apoptosis. J Trace Elem Med Biol 2019; 56:60-68. [PMID: 31442956 DOI: 10.1016/j.jtemb.2019.07.011] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 07/30/2019] [Accepted: 07/31/2019] [Indexed: 01/16/2023]
Abstract
OBJECTIVE Mercury is a global environmental pollutant and is responsible for several organ pathophysiology including oxidative stress-induced liver disorders. Therefore, the present study was conducted to evaluate the potential ameliorative effects of rutin on mercury chloride (HgCl2)-induced hepatotoxicity in adult male rats. METHODS HgCl2 was intraperitoneally injected at a dose of 1.23 mg/kg body weight for 7 days alone or in combination with the orally rutin (50 and 100 mg/kg body weight). RESULTS Rutin treatment significantly improved liver function tests [alkaline phosphatase (ALP), aspartate aminotransferase (AST) and alanine aminotransferase (ALT)], and increased activities of antioxidant defense system [catalase (CAT), superoxide dismutase (SOD) and glutathione peroxidase (GPx)] and glutathione (GSH) content. The histological alterations and epidermal growth factor receptor (EGFR) expression in the HgCl2-induced liver tissues were decreased by administration of rutin. Furthermore, rutin reversed the changes in levels of apoptosis and inflammation related proteins involving p53, Bcl-2 associated X protein (Bax), B-cell lymphoma-2 (Bcl-2), cytochrome c, nuclear factor kappa B (NF-κB), tumor necrosis factor-α (TNF-α), B-cell lymphoma-3(Bcl-3) and interleukin-1β (IL-1β), and inhibited p38α mitogen-activated protein kinase (MAPK) and cysteine aspartate specific protease-3 (caspase-3) activations. CONCLUSION The data of the present study suggest that rutin effectively suppress HgCl2-induced hepatotoxicity by ameliorating oxidative stress, inflammation and apoptosis.
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Affiliation(s)
- Cuneyt Caglayan
- Department of Biochemistry, Faculty of Veterinary Medicine, Bingol University, Bingol, 12000, Turkey.
| | - Fatih Mehmet Kandemir
- Department of Biochemistry, Faculty of Veterinary Medicine, Ataturk University, Erzurum, Turkey
| | - Ekrem Darendelioğlu
- Department of Molecular Biology and Genetics, Faculty of Science and Literature, Bingol University, Bingol, Turkey
| | - Serkan Yıldırım
- Department of Pathology, Faculty of Veterinary Medicine, Ataturk University, Erzurum, Turkey
| | - Sefa Kucukler
- Department of Biochemistry, Faculty of Veterinary Medicine, Ataturk University, Erzurum, Turkey
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Nobre P, Cabral MDF, Costa J, Castro-Caldas M, Carvalho C, Branco V. In Vitro Assessment of the Efficacy of a Macrocyclic Chelator in Reversing Methylmercury Toxicity. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16234817. [PMID: 31801208 PMCID: PMC6926914 DOI: 10.3390/ijerph16234817] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 11/22/2019] [Accepted: 11/28/2019] [Indexed: 12/25/2022]
Abstract
Methylmercury (MeHg) is a highly neurotoxic compound to which human populations are exposed via fish consumption. Once in cells, MeHg actively binds thiols and selenols, interfering with the activity of redox enzymes such as thioredoxin (Trx) and the selenoenzyme thioredoxin reductase (TrxR) which integrate the thioredoxin system. In fact, it has been shown that inhibition of this system by MeHg is a critical step in the unfolding of cell death. Current clinical approaches to mitigate the toxicity of MeHg rely on the use of chelators, such as meso-2,3-dimercaptosuccinic acid (DMSA) which largely replaced British anti-Lewisite or 2,3-dimercapto-1-propanol (BAL) as the prime choice. However, therapeutic efficacy is limited and therefore new therapeutic options are necessary. In this work, we evaluated the efficacy of a macrocyclic chelator, 1-thia-4,7,10,13-tetraazacyclopentadecane ([15]aneN4S), in preventing MeHg toxicity, namely by looking at the effects over relevant molecular targets, i.e., the thioredoxin system, using both purified enzyme solutions and cell experiments with human neuroblastoma cells (SH-SY5Y). Results showed that [15]aneN4S had a similar efficacy to DMSA and BAL in reversing the inhibition of MeHg over purified TrxR and Trx by looking at both the 5,5′-dithiobis(2-nitrobenzoic acid) (DTNB) reduction assay and insulin reduction capability. In experiments with cells, none of the chelating agents could reverse the inhibition of TrxR by MeHg, which corroborates the high affinity of MeHg to the selenol in TrxR active site. [15]aneN4S and BAL, unlike DMSA, could prevent inhibition of Trx, which allows the maintenance of downstream functions, although BAL showed higher toxicity to cells. Overall these findings highlight the potential of using [15]aneN4S in the treatment of MeHg poisoning and encourage further studies, namely in vivo.
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Affiliation(s)
- Paula Nobre
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal; (P.N.); (M.d.F.C.); (J.C.); (M.C.-C.); (C.C.)
| | - Maria de Fátima Cabral
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal; (P.N.); (M.d.F.C.); (J.C.); (M.C.-C.); (C.C.)
| | - Judite Costa
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal; (P.N.); (M.d.F.C.); (J.C.); (M.C.-C.); (C.C.)
| | - Margarida Castro-Caldas
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal; (P.N.); (M.d.F.C.); (J.C.); (M.C.-C.); (C.C.)
- UCIBIO, Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - Cristina Carvalho
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal; (P.N.); (M.d.F.C.); (J.C.); (M.C.-C.); (C.C.)
| | - Vasco Branco
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal; (P.N.); (M.d.F.C.); (J.C.); (M.C.-C.); (C.C.)
- Correspondence: ; Tel.:+351-217-946-400
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The Role of Xenobiotics and Trace Metals in Parkinson’s Disease. Mol Neurobiol 2019; 57:1405-1417. [DOI: 10.1007/s12035-019-01832-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 11/01/2019] [Indexed: 12/21/2022]
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Shayesteh MR, Haghi-Aminjan H, Mousavi MJ, Momtaz S, Abdollahi M. The Protective Mechanism of Cannabidiol in Cardiac Injury: A Systematic Review of Non-Clinical Studies. Curr Pharm Des 2019; 25:2499-2507. [DOI: 10.2174/2210327909666190710103103] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 06/26/2019] [Indexed: 11/22/2022]
Abstract
Background:
Cardiac disease is accounted as the leading cause of worldwide morbidity and mortality.
The disease is characterized by the overproduction of reactive oxygen and/or nitrogen species (ROS/RNS), and
induction of oxidative stress. Cannabidiol (CBD) is a non-psychoactive ingredient of marijuana that has been
reported to be safe and well tolerated in patients. Due to its pleiotropic effect, CBD has been shown to exert cytoprotective
effects. This study intended to clarify the mechanisms and the potential role of CBD regarding cardiac
injuries treatment.
Methods:
A systematic literature search was conducted, according to the Preferred Reporting Items for Systematic
Reviews and Meta-Analyses (PRISMA) guidelines, in the electronic databases including PubMed, Web of
Science, Scopus, and Embase up to June 2019 using predefined search terms in the titles and abstracts. Accordingly,
a set of pre-specified inclusion and exclusion criteria were considered and 8 articles were ultimately included
in this study.
Results:
Our findings demonstrate that CBD has multi-functional protective assets to improve cardiac injuries;
preliminary through scavenging of free radicals, and reduction of oxidative stress, apoptosis, and inflammation.
Conclusion:
CBD can protect against cardiac injuries, mainly through its antioxidative and antiapoptotic effects
on the basis of non-clinical studies. The cardioprotective effects of the CBD need to be further studied in welldesigned
clinical trials.
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Affiliation(s)
- Mohammad R.H. Shayesteh
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Hamed Haghi-Aminjan
- Pharmaceutical Sciences Research Center, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Mohammad J. Mousavi
- Department of Immunology, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Saeideh Momtaz
- Toxicology and Diseases Group (TDG), Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Abdollahi
- Toxicology and Diseases Group (TDG), Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, Tehran, Iran
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Xiang H, Tao Y, Zhang B, Liang C, Li Z, Feng L, Qi J, Pan W, Tong J, Yan S, Tao F. Protective effect of high zinc levels on preterm birth induced by mercury exposure during pregnancy: A birth cohort study in China. J Trace Elem Med Biol 2019; 55:71-77. [PMID: 31345369 DOI: 10.1016/j.jtemb.2019.06.004] [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: 01/19/2019] [Revised: 06/09/2019] [Accepted: 06/11/2019] [Indexed: 12/18/2022]
Abstract
OBJECTIVE The aims of our study were to determine whether prenatal mercury levels are associated with the risk of preterm birth (PTB) and whether high maternal serum zinc (Zn) levels alleviate any negative effects of maternal mercury (Hg) exposure regarding PTB. METHODS Serum concentrations of Zn and Hg were measured in 3025 pregnant women from the Ma'anshan Birth Cohort. Before the collection of blood samples, they underwent examinations via the completion of questionnaires. The delivery records of the women were obtained from a series of medical records. We divided the study population into tertiles according to the participants' Hg levels: the low-Hg group (the first tertile, <0.30 μg/L), the medium-Hg group (the second tertile, 0.30-0.43 μg/L) and the high-Hg group (the third tertile, ≥0.43 μg/L). The associations of Hg exposure with both the risk of PTB and gestational age (weeks) at birth were estimated using a binary logistic regression model and multivariable linear regression analysis, respectively. Afterwards, we conducted a repeated analyses test after the participants were stratified according to their Zn levels, using the 75th percentile division method. RESULTS Overall, the medians and the interquartile ranges of Hg and Zn in the second trimester were 0.36 (0.27, 0.48) μg/L and 812.34 (731.26, 896.59) μg/L, respectively. Hg levels were associated with PTB [adjusted odds ratio (OR) and 95% confidence interval (95% CI): 1.91 (1.17, 3.12) for the third tertile vs. the first tertile of the serum Hg levels]. In the stratification analysis of the participants in the low-Zn group, the high-Hg group exhibited a significant odds ratio of PTB [adjusted OR (95% CI): 1.87 (1.08, 3.24)], compared to the low-Hg group. However, in the participants from the high-Zn group, the high-Hg group exhibited a non-significant OR of PTB [adjusted OR (95% CI): 2.32 (0.73, 7.42)]. In the multivariate linear regression analysis, gestational age (weeks) at delivery was significantly and inversely associated with the ln-transformed Hg concentrations [adjusted β (95% CI): -0.16 (-0.26, -0.06)]. Similarly, after the stratification analysis in the high-Zn group, there were no significant associations between PTB and the Hg levels [adjusted β (95% CI): -0.12 (-0.33, 0.09)]. CONCLUSION Prenatal Hg exposure adversely affected PTB, and high Zn levels alleviate this effect, which indicates that a more stringent control of Hg and a sufficient intake of Zn are necessary to help birth outcomes.
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Affiliation(s)
- Haiyun Xiang
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China
| | - Yiran Tao
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China
| | - Baoli Zhang
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China
| | - Chunmei Liang
- Anhui Provincial Key Laboratory of Population Health & Aristogenics, Hefei, China
| | - Zhijuan Li
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China
| | - Lanlan Feng
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China
| | - Juan Qi
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China
| | - Wan Pan
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China
| | - Juan Tong
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China
| | - Shuangqin Yan
- Ma'anshan Maternal and Child Health (MCH) Center, Ma'anshan, China
| | - Fangbiao Tao
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China; Anhui Provincial Key Laboratory of Population Health & Aristogenics, Hefei, China.
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Budanovic M, Tessensohn ME, Webster RD. Substantially higher concentrations of mercury are detected in airborne particulate matter when using a preservation agent during sample preparation steps. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 252:637-643. [PMID: 31185352 DOI: 10.1016/j.envpol.2019.05.152] [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: 03/13/2019] [Revised: 05/09/2019] [Accepted: 05/29/2019] [Indexed: 06/09/2023]
Abstract
Inductively coupled plasma - mass spectrometry (ICP-MS) analysis of airborne particulate bound mercury was carried out utilizing a high sulfur containing organic compound as a preservation agent to limit the negative bias that affects the determination of low levels of mercury. Between 600% and 1000% more Hg was detected with the use of the additive, lithium tetrathiafulvalene carboxylate (LiCTTF), during the microwave assisted acid digestion sample processing step without influencing the determination of other trace elements. The average Hg concentration was 0.05 ng m-3 and 0.4 ng m-3 in the absence and presence of LiCTTF, respectively. Stabilization of the mercury ions with the preservation agent resulted in higher precision for ICP-MS measurements with relative standard deviation (RSD) values ranging from 1.07% to 4.36%. The results obtained in this study emphasize the necessity of using a preservation agent in the atomic spectroscopic determination of mercury to prevent losses and is especially critical in low-level analyses such as those routinely performed in environmental mercury pollution trend assessments.
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Affiliation(s)
- Maja Budanovic
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Malcolm E Tessensohn
- Environmental Chemistry and Materials Centre, Nanyang Environment and Water Research Institute, 1 Cleantech Loop, CleanTech One #06-08, Singapore, 637141, Singapore
| | - Richard D Webster
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore; Environmental Chemistry and Materials Centre, Nanyang Environment and Water Research Institute, 1 Cleantech Loop, CleanTech One #06-08, Singapore, 637141, Singapore; The Cambridge Centre for Advanced Research and Education in Singapore, 1 Create Way, Singapore, 138602, Singapore.
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Tortora F, Notariale R, Maresca V, Good KV, Sorbo S, Basile A, Piscopo M, Manna C. Phenol-Rich Feijoa sellowiana (Pineapple Guava) Extracts Protect Human Red Blood Cells from Mercury-Induced Cellular Toxicity. Antioxidants (Basel) 2019; 8:antiox8070220. [PMID: 31336755 PMCID: PMC6680458 DOI: 10.3390/antiox8070220] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 06/21/2019] [Accepted: 07/08/2019] [Indexed: 02/06/2023] Open
Abstract
Plant polyphenols, with broadly known antioxidant properties, represent very effective agents against environmental oxidative stressors, including mercury. This heavy metal irreversibly binds thiol groups, sequestering endogenous antioxidants, such as glutathione. Increased incidence of food-derived mercury is cause for concern, given the many severe downstream effects, ranging from kidney to cardiovascular diseases. Therefore, the possible beneficial properties of Feijoa sellowiana against mercury toxicity were tested using intact human red blood cells (RBC) incubated in the presence of HgCl2. Here, we show that phenol-rich (10–200 µg/mL) extracts from the Feijoa sellowiana fruit potently protect against mercury-induced toxicity and oxidative stress. Peel and pulp extracts are both able to counteract the oxidative stress and thiol decrease induced in RBC by mercury treatment. Nonetheless, the peel extract had a greater protective effect compared to the pulp, although to a different extent for the different markers analyzed, which is at least partially due to the greater proportion and diversity of polyphenols in the peel. Furthermore, Fejioa sellowiana extracts also prevent mercury-induced morphological changes, which are known to enhance the pro-coagulant activity of these cells. These novel findings provide biochemical bases for the pharmacological use of Fejioa sellowiana-based functional foods in preventing and combating mercury-related illnesses.
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Affiliation(s)
- Fabiana Tortora
- Department of Precision Medicine, School of Medicine, University of Campania "Luigi Vanvitelli", via Luigi de Crecchio, 80138 Naples, Italy
| | - Rosaria Notariale
- Department of Precision Medicine, School of Medicine, University of Campania "Luigi Vanvitelli", via Luigi de Crecchio, 80138 Naples, Italy
| | - Viviana Maresca
- Department of Biology, University of Naples Federico II, via Cupa Nuova Cinthia, 80126 Naples, Italy
| | - Katrina Vanessa Good
- Department of Biochemistry & Microbiology, University of Victoria, Victoria, BC V8W 3R4, Canada
| | - Sergio Sorbo
- Ce.S.M.A, Microscopy Section, University of Naples Federico II, via Cupa Nuova Cinthia, 80126 Naples, Italy
| | - Adriana Basile
- Department of Biology, University of Naples Federico II, via Cupa Nuova Cinthia, 80126 Naples, Italy
| | - Marina Piscopo
- Department of Biology, University of Naples Federico II, via Cupa Nuova Cinthia, 80126 Naples, Italy.
| | - Caterina Manna
- Department of Precision Medicine, School of Medicine, University of Campania "Luigi Vanvitelli", via Luigi de Crecchio, 80138 Naples, Italy.
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Kim JJ, Kim YS, Kumar V. Heavy metal toxicity: An update of chelating therapeutic strategies. J Trace Elem Med Biol 2019; 54:226-231. [PMID: 31109617 DOI: 10.1016/j.jtemb.2019.05.003] [Citation(s) in RCA: 230] [Impact Index Per Article: 46.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 03/25/2019] [Accepted: 05/06/2019] [Indexed: 01/19/2023]
Abstract
AIM This review illustrates heavy metals toxicity, currently available therapies and the role and efficacy of chelation therapy for its management. SUMMARY Heavy metals are necessary for various biological processes, but they become harmful in excess. Specifically, they induce oxidative stress by generating free radicals and reducing antioxidant levels. Heavy metals also alter the confirmation of protein and DNA and inhibit their function. Chelation therapy is commonly used to treat metals toxicity. Chelation is a chemical process that occurs when interaction between a central metal atom/ion and ligand leads to formation of a complex ring-like structure. The ligand has a donor ion/molecule, which has a lone pair of electrons and may be monodentate to polydentate. Each metal has a different reactivity with a ligand, so a specific chelation agent is required for each metal. Combination therapy with a chelating agent and an antioxidant led to improved outcome. CONCLUSION Heavy metal poisoning is a common health problem because of mining, smelting, industrial, agricultural and sewage waste. Heavy metals can be efficiently excreted from the body following treatment with proper chelation agents.
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Affiliation(s)
- Jong-Joo Kim
- Department of Biotechnology, Yeungnam University, Gyeongbuk, Republic of Korea
| | - You-Sam Kim
- Department of Biotechnology, Yeungnam University, Gyeongbuk, Republic of Korea
| | - Vijay Kumar
- Department of Biotechnology, Yeungnam University, Gyeongbuk, Republic of Korea.
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Insights on alpha lipoic and dihydrolipoic acids as promising scavengers of oxidative stress and possible chelators in mercury toxicology. J Inorg Biochem 2019; 195:111-119. [DOI: 10.1016/j.jinorgbio.2019.03.019] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 03/19/2019] [Accepted: 03/20/2019] [Indexed: 12/11/2022]
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GC-MS Chemical Characterization and In Vitro Evaluation of Antioxidant and Toxic Effects Using Drosophila melanogaster Model of the Essential Oil of Lantana montevidensis (Spreng) Briq. ACTA ACUST UNITED AC 2019; 55:medicina55050194. [PMID: 31126036 PMCID: PMC6572660 DOI: 10.3390/medicina55050194] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 03/27/2019] [Accepted: 05/15/2019] [Indexed: 11/17/2022]
Abstract
Background and objectives: Natural products such as essential oils with antioxidant potential can reduce the level of oxidative stress and prevent the oxidation of biomolecules. In the present study, we investigated the antioxidant potential of Lantana montevidensis leaf essential oil (EOLM) in chemical and biological models using Drosophila melanogaster. Materials and methods: in addition, the chemical components of the oil were identified and quantified by gas chromatography coupled to mass spectrometry (GC-MS), and the percentage compositions were obtained from electronic integration measurements using flame ionization detection (FID). Results: our results demonstrated that EOLM is rich in terpenes with Germacrene-D (31.27%) and β-caryophyllene (28.15%) as the major components. EOLM (0.12-0.48 g/mL) was ineffective in scavenging DPPH radical, and chelating Fe(II), but showed reducing activity at 0.24 g/mL and 0.48 g/mL. In in vivo studies, exposure of D. melanogaster to EOLM (0.12-0.48 g/mL) for 5 h resulted in 10% mortality; no change in oxidative stress parameters such as total thiol, non-protein thiol, and malondialdehyde contents, in comparison to control (p > 0.05). Conclusions: taken together, our results indicate EOLM may not be toxic at the concentrations tested, and thus may not be suitable for the development of new botanical insecticides, such as fumigants or spray-type control agents against Drosophila melanogaster.
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Maqbool F, Bahadar H, Hassani S, Niaz K, Baeeri M, Rahimifard M, Ghasemi-Niri SF, Abdollahi M. Biochemical evidence on the potential role of methyl mercury in hepatic glucose metabolism through inflammatory signaling and free radical pathways. J Cell Biochem 2019; 120:16195-16205. [PMID: 31081130 DOI: 10.1002/jcb.28899] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Revised: 03/12/2019] [Accepted: 03/22/2019] [Indexed: 12/18/2022]
Abstract
Methylmercury (MeHg) is an extremely important environmental toxicant posing serious health risks to human health and a big source of environmental pollutant. Numerous evidence available showing a link between nervous system toxicity and MeHg exposure. Other forms of mercury are reason of metabolic toxic effects and alteration of DNA in the human body. The sources of exposure could be occupational or other environmental settings. In the present study MeHg was orally gavaged to mice, at doses of 2.5, 5, and 10 mg/kg for 4 weeks. Fasting hyperglycemia, activity of hepatic phoshphoenolpyruvate carboxykinase and glucose 6-phoshphate were reported high as compared to control group. Inflammatory markers like, tumor necrosis factor α, the actual end product of inflammatory mediators' cascade pathway was also raised in comparison to control group. Hyperinsulinemia observed in serum showed clear understanding of mercury induced insulin resistance. Moreover, tissue damage due to increased oxidative stress markers like, hepatic lipid peroxidation, 8-deoxygunosine, reactive oxygen species, and carbonyl groups was significantly higher as compared to control group. MeHg caused a significant reduction in antioxidant markers like ferric reducing antioxidant power and total thiol molecules. The present study highlighted that activity of key enzymes involved in glucose metabolism is changed, owing to MeHg induced toxicity in the liver. Induction of similar toxic effects assumed to be stimulated by the production of high quantity free radicals.
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Affiliation(s)
- Faheem Maqbool
- Toxicology and Diseases Group, The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, Tehran, Iran.,Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Haji Bahadar
- Toxicology and Diseases Group, The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, Tehran, Iran.,Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.,Department of Pharmacology, Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Pakistan
| | - Shokoufeh Hassani
- Toxicology and Diseases Group, The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, Tehran, Iran.,Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Kamal Niaz
- Toxicology and Diseases Group, The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, Tehran, Iran.,Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Maryam Baeeri
- Toxicology and Diseases Group, The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, Tehran, Iran.,Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahban Rahimifard
- Toxicology and Diseases Group, The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, Tehran, Iran.,Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyedeh Farnaz Ghasemi-Niri
- Toxicology and Diseases Group, The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, Tehran, Iran.,Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Abdollahi
- Toxicology and Diseases Group, The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, Tehran, Iran.,Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
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Merlo E, Schereider IRG, Simões MR, Vassallo DV, Graceli JB. Mercury leads to features of polycystic ovary syndrome in rats. Toxicol Lett 2019; 312:45-54. [PMID: 31071422 DOI: 10.1016/j.toxlet.2019.05.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 04/11/2019] [Accepted: 05/05/2019] [Indexed: 01/28/2023]
Abstract
Mercury (Hg) is a heavy metal and Hg exposure is associated with various neural, immune, and cardiovascular abnormalities. However, few studies have evaluated Hg's toxicologic effect on reproductive and metabolic functions. In this study, we assessed whether Hg exposure results in reproductive and metabolic abnormalities. Hg was administered to adult female Wistar rats, mimicking the Hg levels found in exposed human blood, and their reproductive and metabolic function was assessed. Rats exposed to Hg displayed abnormal estrous cyclicity and ovarian follicular development, with a reduction in ovarian antral follicles and an increase in atretic and cystic ovarian follicles. Uterine atrophy with the presence of inflammatory cells was observed in Hg-exposed rats. The presence of abnormal ovarian fat accumulation, as well as increased ovarian lipid drops accumulation, was observed in Hg-exposed rats. Ovarian oxidative stress was also present in the Hg-exposed rats. High fasting glucose levels, glucose, and insulin intolerance were observed in Hg-exposed rats. Thus, these data suggest that Hg exposure led to abnormal reproductive and metabolic features similar to those found in the polycystic ovary syndrome (PCOS) rat models.
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Affiliation(s)
- Eduardo Merlo
- Dept of Morphology, Federal University of Espírito Santo, Brazil
| | | | - Maylla R Simões
- Dept of Physiology, Federal University of Espírito Santo, Brazil
| | | | - Jones B Graceli
- Dept of Morphology, Federal University of Espírito Santo, Brazil.
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Pourreza N, Ghomi M. Green synthesized carbon quantum dots from Prosopis juliflora leaves as a dual off-on fluorescence probe for sensing mercury (II) and chemet drug. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 98:887-896. [DOI: 10.1016/j.msec.2018.12.141] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 12/26/2018] [Accepted: 12/31/2018] [Indexed: 12/15/2022]
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Akkaya B, Kucukal E, Little JA, Gurkan UA. Mercury leads to abnormal red blood cell adhesion to laminin mediated by membrane sulfatides. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2019; 1861:1162-1171. [PMID: 30890469 DOI: 10.1016/j.bbamem.2019.03.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 03/12/2019] [Accepted: 03/14/2019] [Indexed: 12/27/2022]
Abstract
Exposure to mercury is associated with numerous health problems, affecting different parts of the human body, including the nervous and cardiovascular systems in adults and children; however, the underlying mechanisms are yet to be fully elucidated. We investigated the role of membrane sulfatide on mercuric ion (Hg2+) mediated red blood cell (RBC) adhesion to a sub-endothelial matrix protein, laminin, using a microfluidic system that mimics microphysiological flow conditions. We exposed whole blood to mercury (HgCl2), at a range of concentrations to mimic acute (high dose) and chronic (low dose) exposure, and examined RBC adhesion to immobilized laminin in microchannels at physiological flow conditions. Exposure of RBCs to both acute and chronic levels of Hg2+ resulted in elevated adhesive interactions between RBCs and laminin depending on the concentration of HgCl2 and exposure duration. BCAM-Lu chimer significantly inhibited the adhesion of RBCs that had been treated with 50 μM of HgCl2 solution for 1 h at 37 °C, while it did not prevent the adhesion of 3 h and 24 h Hg2+-treated RBCs. Sulfatide significantly inhibited the adhesion of RBC that had been treated with 50 μM of HgCl2 solution for 1 h at 37 °C and 0.5 μM of HgCl2 solution for 24 h at room temperature (RT). We demonstrated that RBC BCAM-Lu and RBC sulfatides bind to immobilized laminin, following exposure of RBCs to mercuric ions. The results of this study are significant considering the potential associations between sulfatides, red blood cells, mercury exposure, and cardiovascular diseases.
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Affiliation(s)
- Birnur Akkaya
- Science Faculty, Department of Molecular Biology and Genetics Department, Cumhuriyet University, Sivas, Turkey; Case Biomanufacturing and Microfabrication Laboratory, Mechanical and Aerospace Engineering Department, Case Western Reserve University, Cleveland, OH, USA
| | - Erdem Kucukal
- Case Biomanufacturing and Microfabrication Laboratory, Mechanical and Aerospace Engineering Department, Case Western Reserve University, Cleveland, OH, USA
| | - Jane A Little
- Department of Hematology and Oncology, School of Medicine, Case Western Reserve University, Cleveland, OH, USA; University Hospitals Cleveland Medical Center, Cleveland, OH, USA
| | - Umut A Gurkan
- Case Biomanufacturing and Microfabrication Laboratory, Mechanical and Aerospace Engineering Department, Case Western Reserve University, Cleveland, OH, USA; Biomedical Engineering Department, Case Western Reserve University, Cleveland, OH, USA; Department of Orthopaedics, Case Western Reserve University, Cleveland, OH, USA.
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Insights into the Potential Role of Mercury in Alzheimer's Disease. J Mol Neurosci 2019; 67:511-533. [PMID: 30877448 DOI: 10.1007/s12031-019-01274-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 01/30/2019] [Indexed: 12/18/2022]
Abstract
Mercury (Hg), which is a non-essential element, is considered a highly toxic pollutant for biological systems even when present at trace levels. Elevated Hg exposure with the growing release of atmospheric pollutant Hg and rising accumulations of mono-methylmercury (highly neurotoxic) in seafood products have increased its toxic potential for humans. This review aims to highlight the potential relationship between Hg exposure and Alzheimer's disease (AD), based on the existing literature in the field. Recent reports have hypothesized that Hg exposure could increase the potential risk of developing AD. Also, AD is known as a complex neurological disorder with increased amounts of both extracellular neuritic plaques and intracellular neurofibrillary tangles, which may also be related to lifestyle and genetic variables. Research reports on AD and relationships between Hg and AD indicate that neurotransmitters such as serotonin, acetylcholine, dopamine, norepinephrine, and glutamate are dysregulated in patients with AD. Many researchers have suggested that AD patients should be evaluated for Hg exposure and toxicity. Some authors suggest further exploration of the Hg concentrations in AD patients. Dysfunctional signaling pathways in AD and Hg exposure appear to be interlinked with some driving factors such as arachidonic acid, homocysteine, dehydroepiandrosterone (DHEA) sulfate, hydrogen peroxide, glucosamine glycans, glutathione, acetyl-L carnitine, melatonin, and HDL. This evidence suggests the need for a better understanding of the relationship between AD and Hg exposure, and potential mechanisms underlying the effects of Hg exposure on regional brain functions. Also, further studies evaluating brain functions are needed to explore the long-term effects of subclinical and untreated Hg toxicity on the brain function of AD patients.
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Ahmad S, Mahmood R. Mercury chloride toxicity in human erythrocytes: enhanced generation of ROS and RNS, hemoglobin oxidation, impaired antioxidant power, and inhibition of plasma membrane redox system. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:5645-5657. [PMID: 30612358 DOI: 10.1007/s11356-018-04062-5] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 12/20/2018] [Indexed: 06/09/2023]
Abstract
Mercury is among the most toxic heavy metals and a widespread environmental pollutant. Mercury chloride (HgCl2) is an inorganic compound of mercury which is easily absorbed in the gastrointestinal tract and then enters the blood where it can interact with erythrocytes. In this study, the effect of HgCl2 on human erythrocytes was studied under in vitro conditions. Erythrocytes were treated with different concentrations of HgCl2 (1-100 μM) for 1 h at 37 °C. Cell lysates were prepared and assayed for several biochemical parameters. HgCl2 treatment resulted in oxidation of ferrous iron of hemoglobin to ferric form giving methemoglobin which is inactive as an oxygen transporter. However, the activity of methemoglobin reductase was increased. Hemoglobin oxidation was accompanied by heme degradation and the release of free iron. Protein oxidation was greatly increased with a simultaneous decrease in free amino and sulfhydryl groups and glutathione content. The antioxidant power of HgCl2-treated erythrocytes was impaired resulting in lowered metal reducing and free radical quenching ability of these cells. This suggests that HgCl2 induces oxidative stress in human erythrocytes. This was confirmed when superoxide anion, hydrogen peroxide, peroxynitrite, and nitric oxide generation were found to be dose-dependently increased in HgCl2-treated erythrocytes. Glycolysis and pentose phosphate pathway, the two major pathways of glucose metabolism in erythrocytes, were also inhibited. HgCl2 treatment also inhibited the plasma membrane redox system while the activities of AMP deaminase and glyoxalase-I were increased. These results show that HgCl2 induces oxidative and nitrosative stress, oxidizes hemoglobin, impairs the antioxidant defense mechanism, and alters metabolic pathways in human erythrocytes.
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Affiliation(s)
- Shahbaz Ahmad
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, U.P., 202002, India
| | - Riaz Mahmood
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, U.P., 202002, India.
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Cariccio VL, Samà A, Bramanti P, Mazzon E. Mercury Involvement in Neuronal Damage and in Neurodegenerative Diseases. Biol Trace Elem Res 2019; 187:341-356. [PMID: 29777524 DOI: 10.1007/s12011-018-1380-4] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 05/07/2018] [Indexed: 12/11/2022]
Abstract
Neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis, and multiple sclerosis are characterized by a chronic and selective process of neuronal cell death. Although the causes of neurodegenerative diseases remain still unknown, it is now a well-established idea that more factors, such as genetic, endogenous, and environmental, are involved. Among environmental causes, the accumulation of mercury, a heavy metal considered a toxic agent, was largely studied as a probable factor involved in neurodegenerative disease course. Mercury exists in three main forms: elemental mercury, inorganic mercury, and organic mercury (methylmercury and ethylmercury). Sources of elemental mercury can be natural (volcanic emission) or anthropogenic (coal-fired electric utilities, waste combustion, hazardous-waste incinerators, and gold extraction). Moreover, mercury is still used as an antiseptic, as a medical preservative, and as a fungicide. Dental amalgam can emit mercury vapor. Mercury vapor, being highly volatile and lipid soluble, can cross the blood-brain barrier and the lipid cell membranes and can be accumulated into the cells in its inorganic forms. Also, methylmercury can pass through blood-brain and placental barriers, causing serious damage in the central nervous system. This review describes the toxic effects of mercury in cell cultures, in animal models, and in patients with neurodegenerative diseases. In vitro experiments showed that mercury exposure was principally involved in oxidative stress and apoptotic processes. Moreover, motor and cognitive impairment and neural loss have been confirmed in various studies performed in animal models. Finally, observational studies on patients with neurodegenerative diseases showed discordant data about a possible mercury involvement.
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Affiliation(s)
- Veronica Lanza Cariccio
- IRCCS Centro Neurolesi "Bonino Pulejo", Via Provinciale Palermo, Contrada Casazza, 98124, Messina, Italy
| | - Annalisa Samà
- IRCCS Centro Neurolesi "Bonino Pulejo", Via Provinciale Palermo, Contrada Casazza, 98124, Messina, Italy
| | - Placido Bramanti
- IRCCS Centro Neurolesi "Bonino Pulejo", Via Provinciale Palermo, Contrada Casazza, 98124, Messina, Italy
| | - Emanuela Mazzon
- IRCCS Centro Neurolesi "Bonino Pulejo", Via Provinciale Palermo, Contrada Casazza, 98124, Messina, Italy.
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Karri R, Chalana A, Das R, Rai RK, Roy G. Cytoprotective effects of imidazole-based [S 1] and [S 2]-donor ligands against mercury toxicity: a bioinorganic approach. Metallomics 2019; 11:213-225. [PMID: 30488926 DOI: 10.1039/c8mt00237a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Here we report the coordination behaviour of an imidazole-based [S1]-donor ligand, 1,3-dimethyl-imidazole-2(3H)-thione (L1), and [S2]-donor ligand, 3,3'-methylenebis(1-methyl-imidazole-2(3H)-thione) (L2) or 4,4'-(3,3'-methylenebis-(2-thioxo-2,3-dihydro-imidazole-3,1-diyl))dibutanoic acid (L3), with HgX2 (X = Cl, Br or I) in solution and the solid state. NMR, UV-Vis spectroscopic, and single crystal X-ray studies demonstrated that L1 or L2 coordinated rapidly and reversibly to the mercury center of HgX2 through the thione moiety. Treatment of L2 with HgCl2 or HgBr2 afforded 16-membered metallacycle k1-(L2)2Hg2Cl4 or k1-(L2)2Hg2Br4 where two Cl or Br atoms are located inside the ring. In contrast, treatment of L2 with HgI2 afforded a chain-like structure of k1-[L2Hgl2]n, possibly due to the large size of the iodine atom. Interestingly, [S1] and [S2]-donor ligands (L1, L2, and L3) showed an excellent efficacy to protect liver cells against HgCl2 induced toxicity and the strength of their efficacy is in the order of L3 > L2 > L1. 30% decrease of ROS production was observed when liver cells were co-treated with HgCl2 and L1 in comparison to those cells treated with HgCl2 only. In contrast, 45% and 60% decrease of ROS production was observed in the case of cells co-treated with HgCl2 and thiones L2 and L3, respectively, indicating that [S2]-donor ligands L2 and L3 have better cytoprotective effects against oxidative stress induced by HgCl2 than [S1]-donor ligand L1. Water-soluble ligand L3 with N-(CH2)3CO2H substituents showed a better cytoprotective effect against HgCl2 toxicity than L2 in liver cells.
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Affiliation(s)
- Ramesh Karri
- Department of Chemistry, School of Natural Sciences, Shiv Nadar University, NH91, Dadri, Gautam Buddha Nagar, UP 201314, India.
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Singh P, Tiwari D, Mishra M, Kumar D. Molecular Mechanisms of Heavy Metal Toxicity in Cancer Progression. NETWORKING OF MUTAGENS IN ENVIRONMENTAL TOXICOLOGY 2019. [DOI: 10.1007/978-3-319-96511-6_3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Strohmidel P, Sperling M, Karst U. Investigations on the binding of ethylmercury from thiomersal to proteins in influenza vaccines. J Trace Elem Med Biol 2018; 50:100-104. [PMID: 30262265 DOI: 10.1016/j.jtemb.2018.06.011] [Citation(s) in RCA: 8] [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: 03/09/2018] [Revised: 05/07/2018] [Accepted: 06/15/2018] [Indexed: 01/01/2023]
Abstract
This study investigates the binding of ethylmercury (EtHg+) released from the preservative thiomersal by hydrolysis to proteins in influenza vaccines via ultrafiltration and subsequent total reflection x-ray fluorescence (TXRF) analysis as well as size exclusion chromatography (SEC) hyphenated to inductively coupled plasma-mass spectrometry (ICP-MS). Binding of EtHg+ to the protein fraction was shown by means of ultrafiltration and TXRF in a qualitative matter. SEC/ICP-MS was applied to gain more information about the molecular weight of the bound protein and quantitative information. First experiments showed the necessity of a rinsing step during elution with a thiol-containing compound to prevent unspecific binding or mercury species to the chromatographic system. Adduct formation of EtHg+ and a high-molecular compound could be observed for different concentrations of EtHg+ applied. The mercury-containing fraction was larger than 133 kDa, indicating binding to hemagglutinin, which is the active ingredient in influenza vaccines. The applied SEC/ICP-MS method allowed for external calibration with EtHg+ and a binding of 141 μg L-1 Hg was shown for a vaccine solution that was incubated with EtHg+ (25 mg L-1 Hg).
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Affiliation(s)
- Philipp Strohmidel
- Institute of Inorganic and Analytical Chemistry, University of Münster, Corrensstr. 28/30, 48149 Münster, Germany
| | - Michael Sperling
- Institute of Inorganic and Analytical Chemistry, University of Münster, Corrensstr. 28/30, 48149 Münster, Germany; European Virtual Institute for Speciation Analysis (EVISA), Mendelstr. 11, 48149 Münster, Germany
| | - Uwe Karst
- Institute of Inorganic and Analytical Chemistry, University of Münster, Corrensstr. 28/30, 48149 Münster, Germany.
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da Luz Fiuza T, Leitemperger J, Severo ES, Marins AT, do Amaral AB, Pereira ME, Loro VL. Effects of diphenyl diselenide diet on a model of mercury poisoning. Mol Biol Rep 2018; 45:2631-2639. [DOI: 10.1007/s11033-018-4433-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 10/09/2018] [Indexed: 01/18/2023]
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Abstract
Mercury (Hg) is a global pollutant emitted primarily as gaseous Hg0 that is deposited in aquatic and terrestrial ecosystems following its oxidation to HgII. From that point, microbes play a key role in determining Hg’s fate in the environment by participating in sequestration, oxidation, reduction, and methylation reactions. A wide diversity of chemotrophic and phototrophic microbes occupying oxic and anoxic habitats are known to participate directly in Hg cycling. Over the last few years, new findings have come to light that have greatly improved our mechanistic understanding of microbe-mediated Hg cycling pathways in the environment. In this review, we summarize recent advances in microbially mediated Hg cycling and take the opportunity to compare the relatively well-studied chemotrophic pathways to poorly understood phototrophic pathways. We present how the use of genomic and analytical tools can be used to understand Hg transformations and the physiological context of recently discovered cometabolic Hg transformations supported in anaerobes and phototrophs. Finally, we propose a conceptual framework that emphasizes the role that phototrophs play in environmental Hg redox cycling and the importance of better characterizing such pathways in the face of the environmental changes currently underway.
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Affiliation(s)
- Daniel S. Grégoire
- Biology Department, University of Ottawa, 30 Marie Curie, Ottawa, ON K1N 6N5, Canada
| | - Alexandre J. Poulain
- Biology Department, University of Ottawa, 30 Marie Curie, Ottawa, ON K1N 6N5, Canada
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Bai L, Wu M, Chen B, Ding Y, Zhou J, Ge J, Zhang C, Fu Z, Li L, Huang W. Membrane-Targetable Probes for Hg2+Detection in Live Cells and Paper-Based Devices. ChemistrySelect 2018. [DOI: 10.1002/slct.201801619] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Lei Bai
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM); Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM); Nanjing Tech University (NanjingTech); Nanjing 211816 China
| | - Meirong Wu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM); Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM); Nanjing Tech University (NanjingTech); Nanjing 211816 China
| | - Buxiang Chen
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM); Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM); Nanjing Tech University (NanjingTech); Nanjing 211816 China
| | - Yaqi Ding
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM); Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM); Nanjing Tech University (NanjingTech); Nanjing 211816 China
| | - Jia Zhou
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM); Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM); Nanjing Tech University (NanjingTech); Nanjing 211816 China
| | - Jingyan Ge
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province; College of Biotechnology and Bioengineering; Zhejiang University of Technology, Hangzhou; 310014, P. R. China
| | - Chengwu Zhang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM); Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM); Nanjing Tech University (NanjingTech); Nanjing 211816 China
| | - Zhenqian Fu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM); Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM); Nanjing Tech University (NanjingTech); Nanjing 211816 China
| | - Lin Li
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM); Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM); Nanjing Tech University (NanjingTech); Nanjing 211816 China
| | - Wei Huang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM); Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM); Nanjing Tech University (NanjingTech); Nanjing 211816 China
- Shaanxi Institute of Flexible Electronics (SIFE); Northwestern Polytechnical University; 127 West Youyi Road Xi'an 710072, P. R
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