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Iijima Y, Miki R, Takasugi N, Fujimura M, Uehara T. Characterization of pathological changes in the olfactory system of mice exposed to methylmercury. Arch Toxicol 2024; 98:1163-1175. [PMID: 38367039 PMCID: PMC10944439 DOI: 10.1007/s00204-024-03682-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 01/15/2024] [Indexed: 02/19/2024]
Abstract
Methylmercury (MeHg) is a well-known environmental neurotoxicant that causes severe brain disorders such as Minamata disease. Although some patients with Minamata disease develop olfactory dysfunction, the underlying pathomechanism is largely unknown. We examined the effects of MeHg on the olfactory system using a model of MeHg poisoning in which mice were administered 30 ppm MeHg in drinking water for 8 weeks. Mice exposed to MeHg displayed significant mercury accumulation in the olfactory pathway, including the nasal mucosa, olfactory bulb, and olfactory cortex. The olfactory epithelium was partially atrophied, and olfactory sensory neurons were diminished. The olfactory bulb exhibited an increase in apoptotic cells, hypertrophic astrocytes, and amoeboid microglia, mainly in the granular cell layer. Neuronal cell death was observed in the olfactory cortex, particularly in the ventral tenia tecta. Neuronal cell death was also remarkable in higher-order areas such as the orbitofrontal cortex. Correlation analysis showed that neuronal loss in the olfactory cortex was strongly correlated with the plasma mercury concentration. Our results indicate that MeHg is an olfactory toxicant that damages the central regions involved in odor perception. The model described herein is useful for analyzing the mechanisms and treatments of olfactory dysfunction in MeHg-intoxicated patients.
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Affiliation(s)
- Yuta Iijima
- Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, 700‑8530, Japan
| | - Ryohei Miki
- Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, 700‑8530, Japan
| | - Nobumasa Takasugi
- Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, 700‑8530, Japan
| | - Masatake Fujimura
- Department of Basic Medical Science, National Institute for Minamata Disease, Kumamoto, 867‑0008, Japan
| | - Takashi Uehara
- Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, 700‑8530, Japan.
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2
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Weng M, Dolgova NV, Vogt LI, Qureshi M, Sokaras D, Kroll T, Saitō H, O'Donoghue JL, Watson GE, Myers GJ, Sekikawa T, Pickering IJ, George GN. Synchrotron speciation of umbilical cord mercury and selenium after environmental exposure in Niigata. Neurotoxicology 2024; 100:117-123. [PMID: 38128735 DOI: 10.1016/j.neuro.2023.12.011] [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: 10/02/2023] [Revised: 12/09/2023] [Accepted: 12/17/2023] [Indexed: 12/23/2023]
Abstract
The insidious and deadly nature of mercury's organometallic compounds is informed by two large scale poisonings due to industrial mercury pollution that occurred decades ago in Minamata and Niigata, Japan. The present study examined chemical speciation for both mercury and selenium in a historic umbilical cord sample from a child born to a mother who lived near the Agano River in Niigata. The mother had experienced mercury exposure leading to more than 50 ppm mercury measured in her hair and was symptomatic 9 years prior to the birth. We sought to determine the mercury and selenium speciation in the child's cord using Hg Lα1 and Se Kα1 high-energy resolution fluorescence detected X-ray absorption spectroscopy, the chemical speciation of mercury was found to be predominantly organometallic and coordinated to a thiolate. The selenium was found to be primarily in an organic form and at levels higher than those of mercury, with no evidence of mercury-selenium chemical species. Our results are consistent with mercury exposure at Niigata being due to exposure to organometallic mercury species.
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Affiliation(s)
- Monica Weng
- Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, Saskatchewan S7N 5E2, Canada
| | - Natalia V Dolgova
- Calibr - California Institute for Biomedical Research, Scripps Research, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Linda I Vogt
- Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, Saskatchewan S7N 5E2, Canada
| | - Muhammad Qureshi
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Dimosthenis Sokaras
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Thomas Kroll
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | | | - John L O'Donoghue
- Department of Environmental Medicine, School of Medicine and Dentistry, University of Rochester, Rochester, NY, USA
| | - Gene E Watson
- Department of Environmental Medicine, School of Medicine and Dentistry, University of Rochester, Rochester, NY, USA; Eastman Institute for Oral Health, School of Medicine and Dentistry, University of Rochester, Rochester, NY, USA
| | - Gary J Myers
- Department of Environmental Medicine, School of Medicine and Dentistry, University of Rochester, Rochester, NY, USA; Departments of Neurology and Pediatrics, School of Medicine and Dentistry, University of Rochester, Rochester, NY, USA
| | - Tomoko Sekikawa
- Department of Internal Medicine, Nuttari Clinic, 6-4-12 Nuttarihigasi, Chuo-ku, Niigata 950-0075, Japan
| | - Ingrid J Pickering
- Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, Saskatchewan S7N 5E2, Canada; Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan, Canada; Department of Chemistry, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Graham N George
- Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, Saskatchewan S7N 5E2, Canada; Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan, Canada; Department of Chemistry, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
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3
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Nakamura M, Taulu S, Tachimori H, Tomo Y, Kawashima T, Miura Y, Itatani M, Tobimatsu S. Single-trial neuromagnetic analysis reveals somatosensory dysfunction in chronic Minamata disease. Neuroimage Clin 2023; 38:103422. [PMID: 37163912 PMCID: PMC10189551 DOI: 10.1016/j.nicl.2023.103422] [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: 02/10/2023] [Revised: 04/16/2023] [Accepted: 04/24/2023] [Indexed: 05/12/2023]
Abstract
Methylmercury pollution is a global problem, and Minamata disease (MD) is a stark reminder that exposure to methylmercury can cause irreversible neurological damage. A "glove and stocking type" sensory disturbance due to injured primary sensory cortex (SI) (central somatosensory disturbance) is the most common neurologic sign in MD. As this sign is also prevalent in those with polyneuropathy, we aimed to develop an objective assessment for detecting central somatosensory disturbances in cases of chronic MD. We selected 289 healthy volunteers and 42 patients with MD. We recorded the sensory nerve action potentials (SNAPs) and somatosensory evoked magnetic fields (SEFs) to median nerve stimulation with magnetoencephalography. Single-trial epochs were classified into three categories (N20m, non-response, and P20m epochs) based on the cross-correlation between averaged sensor SEFs and individual epochs. We assessed SI responses (the appearance rate of P20m [P20m rate] and non-response epochs [non-response rate]) and early somatosensory cortical processing (N20m amplitude, reproducibility of N20m in single-trial responses [cross-correlation value], and induced gamma-band oscillations of the SI [gamma response] of single epochs excluding non-response epochs). Receiver operating characteristic curve analyses were used to examine the diagnostic accuracy of each parameter. We found that SNAPs exerted a marginal effect on the N20m. The N20m amplitude, cross-correlation value, and gamma response were significantly reduced in the MD group on either side (p < 0.0001), suggestive of altered early somatosensory cortical processing. Interestingly, the P20m rate and non-response rate were significantly increased in the MD group on either side (p < 0.0001), thereby suggesting impaired SI responses. Notably, P20m and absent N20m peaks were observed in 6 and 11 patients with MD, respectively, which may be attributed to increased numbers of P20m epochs. The cross-correlation value exhibited the highest correlation with the P20m rate or non-response rate. Thus, reduced reproducibility of N20m may play an important role in chronic MD. The cross-correlation value exhibited the highest correlation with the gamma response for both SI parameters in early somatosensory cortical processing. The area under the curve was > 0.77 (range: 0.77-0.79) for all parameters. Their confidence intervals overlapped with each other; thus, each SEF parameter likely had an approximately equivalent discrimination ability. In conclusion, chronic MD is characterized by impaired SI responses and alterations in early somatosensory cortical processing. Thus, single-trial neuromagnetic analysis of somatosensory function may be useful for detecting central somatosensory disturbance and elucidating the relevant pathophysiological mechanisms even in the context of chronic MD.
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Affiliation(s)
- Masaaki Nakamura
- Department of Clinical Medicine, National Institute for Minamata Disease, Kumamoto, Japan.
| | - Samu Taulu
- Department of Physics, University of Washington, Seattle, WA, USA; Institute for Learning and Brain Sciences, University of Washington, Seattle, WA, USA.
| | - Hisateru Tachimori
- Department of Clinical Data Science, Clinical Research & Education Promotion Division, National Center of Neurology and Psychiatry, Tokyo, Japan; Endowed Course for Health System Innovation, Keio University School of Medicine, Tokyo, Japan.
| | - Yui Tomo
- Department of Clinical Data Science, Clinical Research & Education Promotion Division, National Center of Neurology and Psychiatry, Tokyo, Japan.
| | - Takahiro Kawashima
- Department of Clinical Data Science, Clinical Research & Education Promotion Division, National Center of Neurology and Psychiatry, Tokyo, Japan.
| | - Yoko Miura
- Department of Clinical Medicine, National Institute for Minamata Disease, Kumamoto, Japan.
| | - Mina Itatani
- Department of Clinical Medicine, National Institute for Minamata Disease, Kumamoto, Japan.
| | - Shozo Tobimatsu
- Department of Orthoptics, Faculty of Medical Science, Fukuoka International University of Health and Welfare, Fukuoka, Japan.
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Naija A, Yalcin HC. Evaluation of cadmium and mercury on cardiovascular and neurological systems: Effects on humans and fish. Toxicol Rep 2023; 10:498-508. [PMID: 37396852 PMCID: PMC10313869 DOI: 10.1016/j.toxrep.2023.04.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 04/09/2023] [Accepted: 04/17/2023] [Indexed: 07/04/2023] Open
Abstract
Chemicals are at the top of public health concerns and metals have received much attention in terms of toxicological studies. Cadmium (Cd) and mercury (Hg) are among the most toxic heavy metals and are widely distributed in the environment. They are considered important factors involved in several organ disturbances. Heart and brain tissues are not among the first exposure sites to Cd and Hg but they are directly affected and may manifest intoxication reactions leading to death. Many cases of human intoxication with Cd and Hg showed that these metals have potential cardiotoxic and neurotoxic effects. Human exposure to heavy metals is through fish consumption which is considered as an excellent source of human nutrients. In the current review, we will summarize the most known cases of human intoxication with Cd and Hg, highlight their toxic effects on fish, and investigate the common signal pathways of both Cd and Hg to affect heart and brain tissues. Also, we will present the most common biomarkers used in the assessment of cardiotoxicity and neurotoxicity using Zebrafish model.
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Cusset F, Reynolds SJ, Carravieri A, Amouroux D, Asensio O, Dickey RC, Fort J, Hughes BJ, Paiva VH, Ramos JA, Shearer L, Tessier E, Wearn CP, Cherel Y, Bustamante P. A century of mercury: Ecosystem-wide changes drive increasing contamination of a tropical seabird species in the South Atlantic Ocean. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 323:121187. [PMID: 36736563 DOI: 10.1016/j.envpol.2023.121187] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 01/10/2023] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
Mercury (Hg) is a highly toxic metal that adversely impacts human and wildlife health. The amount of Hg released globally in the environment has increased steadily since the Industrial Revolution, resulting in growing contamination in biota. Seabirds have been extensively studied to monitor Hg contamination in the world's oceans. Multidecadal increases in seabird Hg contamination have been documented in polar, temperate and subtropical regions, whereas in tropical regions they are largely unknown. Since seabirds accumulate Hg mainly from their diet, their trophic ecology is fundamental in understanding their Hg exposure over time. Here, we used the sooty tern (Onychoprion fuscatus), the most abundant tropical seabird, as bioindicator of temporal variations in Hg transfer to marine predators in tropical ecosystems, in response to trophic changes and other potential drivers. Body feathers were sampled from 220 sooty terns, from museum specimens (n = 134) and free-living birds (n = 86) from Ascension Island, in the South Atlantic Ocean, over 145 years (1876-2021). Chemical analyses included (i) total- and methyl-Hg, and (ii) carbon (δ1³C) and nitrogen (δ15N) stable isotopes, as proxies of foraging habitat and trophic position, respectively, to investigate the relationship between trophic ecology and Hg contamination over time. Despite current regulations on its global emissions, mean Hg concentrations were 58.9% higher in the 2020s (2.0 μg g-1, n = 34) than in the 1920s (1.2 μg g-1, n = 107). Feather Hg concentrations were negatively and positively associated with δ1³C and δ15N values, respectively. The sharp decline of 2.9 ‰ in δ1³C values over time indicates ecosystem-wide changes (shifting primary productivity) in the tropical South Atlantic Ocean and can help explain the observed increase in terns' feather Hg concentrations. Overall, this study provides invaluable information on how ecosystem-wide changes can increase Hg contamination of tropical marine predators and reinforces the need for long-term regulations of harmful contaminants at the global scale.
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Affiliation(s)
- Fanny Cusset
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS - La Rochelle Université, 2 Rue Olympe de Gouges, 17000, La Rochelle, France; Centre d'Études Biologiques de Chizé (CEBC), UMR 7372 CNRS - La Rochelle Université, 79360, Villiers-en Bois, France.
| | - S James Reynolds
- Centre for Ornithology, School of Biosciences, College of Life & Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, UK; Army Ornithological Society (AOS), c/o Prince Consort Library, Knollys Road, Aldershot, Hampshire, UK
| | - Alice Carravieri
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS - La Rochelle Université, 2 Rue Olympe de Gouges, 17000, La Rochelle, France; Centre d'Études Biologiques de Chizé (CEBC), UMR 7372 CNRS - La Rochelle Université, 79360, Villiers-en Bois, France
| | - David Amouroux
- Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et Les Matériaux (IPREM), UMR, 5254, CNRS, Université de Pau et des Pays de l'Adour, Pau, France
| | - Océane Asensio
- Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et Les Matériaux (IPREM), UMR, 5254, CNRS, Université de Pau et des Pays de l'Adour, Pau, France
| | - Roger C Dickey
- Army Ornithological Society (AOS), c/o Prince Consort Library, Knollys Road, Aldershot, Hampshire, UK
| | - Jérôme Fort
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS - La Rochelle Université, 2 Rue Olympe de Gouges, 17000, La Rochelle, France
| | - B John Hughes
- Centre for Ornithology, School of Biosciences, College of Life & Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, UK; Army Ornithological Society (AOS), c/o Prince Consort Library, Knollys Road, Aldershot, Hampshire, UK
| | - Vitor H Paiva
- University of Coimbra, MARE - Marine and Environmental Sciences Centre / ARNET - Aquatic Research Network, Department of Life Sciences, Calçada Martim de Freitas, 3000-456, Coimbra, Portugal
| | - Jaime A Ramos
- University of Coimbra, MARE - Marine and Environmental Sciences Centre / ARNET - Aquatic Research Network, Department of Life Sciences, Calçada Martim de Freitas, 3000-456, Coimbra, Portugal
| | - Laura Shearer
- Ascension Island Government Conservation and Fisheries Directorate (AIGCFD), Georgetown, Ascension Island, South Atlantic Ocean, UK
| | - Emmanuel Tessier
- Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et Les Matériaux (IPREM), UMR, 5254, CNRS, Université de Pau et des Pays de l'Adour, Pau, France
| | - Colin P Wearn
- The Royal Air Force Ornithological Society (RAFOS), High Wycombe, Buckinghamshire, UK
| | - Yves Cherel
- Centre d'Études Biologiques de Chizé (CEBC), UMR 7372 CNRS - La Rochelle Université, 79360, Villiers-en Bois, France
| | - Paco Bustamante
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS - La Rochelle Université, 2 Rue Olympe de Gouges, 17000, La Rochelle, France; Institut Universitaire de France (IUF), 1 Rue Descartes, 75005 Paris, France
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Moradi R, Mohammadi Ziarani G, Badiei A. Green synthesis and application of spiro[indoline-3,4′-pyrano[2,3-c]pyrazoles] as selective Hg (II) fluorescence sensor. RESEARCH ON CHEMICAL INTERMEDIATES 2023. [DOI: 10.1007/s11164-022-04900-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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7
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Kumar Rai R, Shankar Pati R, Islam A, Roy G. Detoxification of organomercurials by thiones and selones: A short review. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.120980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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8
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Shen Q, Kong X, Li K, Wan T, Dong J, Wu H. A highly sensitive fluorescent 1,8‐naphthalimide Schiff base probe for detection of Hg
2+. J CHIN CHEM SOC-TAIP 2022. [DOI: 10.1002/jccs.202200135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Qinqin Shen
- School of Chemistry and Chemical Engineering Lanzhou Jiaotong University Lanzhou People's Republic of China
| | - Xiaoxia Kong
- School of Chemistry and Chemical Engineering Lanzhou Jiaotong University Lanzhou People's Republic of China
| | - Kaiyi Li
- School of Chemistry and Chemical Engineering Lanzhou Jiaotong University Lanzhou People's Republic of China
| | - Tiantian Wan
- School of Chemistry and Chemical Engineering Lanzhou Jiaotong University Lanzhou People's Republic of China
| | - Jianping Dong
- School of Chemistry and Chemical Engineering Lanzhou Jiaotong University Lanzhou People's Republic of China
| | - Huilu Wu
- School of Chemistry and Chemical Engineering Lanzhou Jiaotong University Lanzhou People's Republic of China
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9
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Colorimetric detection of Hg2+ ion using fluorescein/thiourea sensor as a receptor in aqueous medium. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2021.113569] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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10
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Dunham-Cheatham SM, Klingler KB, Estrada MV, Gustin MS. Using a next-generation sequencing approach to DNA metabarcoding for identification of adulteration and potential sources of mercury in commercial cat and dog foods. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 778:146102. [PMID: 33714808 DOI: 10.1016/j.scitotenv.2021.146102] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 02/20/2021] [Accepted: 02/21/2021] [Indexed: 06/12/2023]
Abstract
Studies have demonstrated that some commercial pet (i.e., cat and dog) food products contain high concentrations of mercury (Hg), and some products have Hg concentrations that are higher than expected based on the ingredients included in the package ingredient list. Additionally, concentrations of methylmercury, a particularly toxic form of Hg commonly associated with fish-based ingredients, are largely unstudied despite the widespread use of such ingredients in pet food products. This study aimed to quantify total Hg and methylmercury in a variety of commercial pet food products (n = 127), and use genetic tools to determine if specific ingredients contributed to high Hg concentrations in the final product. Results indicate that total Hg concentrations were above suggested maximum tolerable limits in three of the tested pet food products, and that methylmercury concentrations were at safe levels in all tested products. Next-generation amplicon sequencing using ten barcode primers was conducted to target distinct taxa and to determine if one primer set outperformed the others in amplifying the often heavily degraded DNA found in pet food products. The 16sUniF_16sUniR primer set generated a relatively higher number of reads across the broadest set of taxa, although several of the primer sets were useful in identifying common animal- and plant-based ingredients in commercial pet food products. Combined with the Hg results, it was demonstrated that pet food product ingredients are consistent among and between product lots. However, these results also revealed that adulteration is prevalent in pet food products.
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Affiliation(s)
- Sarrah M Dunham-Cheatham
- Department of Natural Resources and Environmental Science, University of Nevada, Reno 89557, NV, USA.
| | - Kelly B Klingler
- Department of Biology, University of Nevada, Reno 89557, NV, USA; Department of Environmental Conservation, University of Massachusetts, Amherst 01003, MA, USA
| | - Margarita Vargas Estrada
- Department of Natural Resources and Environmental Science, University of Nevada, Reno 89557, NV, USA
| | - Mae Sexauer Gustin
- Department of Natural Resources and Environmental Science, University of Nevada, Reno 89557, NV, USA
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11
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A free nitrogen-containing Sm-MOF for selective detection and facile removal of mercury(II). Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126484] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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12
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Sarker A. Ecological perspectives on water, food, and health security linkages: the Minamata case in Japan. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:10.1007/s11356-021-14207-8. [PMID: 33931814 DOI: 10.1007/s11356-021-14207-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Accepted: 04/27/2021] [Indexed: 06/12/2023]
Abstract
Extant studies address water, food, and health security issues considerably separately and within narrow disciplinary confines. This study investigates the links among these three issues from an ecological viewpoint with a multidisciplinary approach in a modified Millennium Ecosystem Assessment framework developed by the United Nations. The modified framework includes water, food, and health security considerations as the three constituents of human well-being from an ecological (more specifically, ecosystem services) viewpoint. This study examines the links through published data associated with the Minamata incident, which was a historic and horrific methylmercury-induced water, food, and health poisoning crisis in Japan. The results show that when heavy metal pollution changes one component (marine water) of the provisioning ecosystem services, this change subsequently affects another component (seafood) of the services. This then defines the linkages among water, food, and health security as the three constituents of human well-being within the modified framework. The links can have immediate and far-reaching economic, social, legal, ethical, and justice implications within and across generations. This study provides important evidence for emerging economies that ignore the water-food-health security nexus.
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Affiliation(s)
- Ashutosh Sarker
- Department of Economics, School of Business, Monash University (Malaysia Campus), 47500, Sunway City, Selangor, Malaysia.
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13
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Tümay SO, Yeşilot S. Highly selective “turn-on” fluorescence determination of mercury ion in food and environmental samples through novel anthracene and pyrene appended Schiff bases. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2020.113093] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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14
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Seenan S, Manickam S, Kulathu Iyer S. Fluorescent chemosensors for Hg 2+ ions based on a pyridine-attached phenanthridine probe. NEW J CHEM 2021. [DOI: 10.1039/d1nj03561d] [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
The sensor probe detects selectively Hg2+ ions in semi-aqueous medium. Probe showed ratiometric response with low detection limit. We observed that 1 : 1 binding mode between probe and Hg2+ ions. Additionally, this probe was utilized for various practical applications.
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Affiliation(s)
- Shanthi Seenan
- Department of Chemistry, School of Advanced Sciences and Vellore Institute of Technology, Vellore-632014, India
| | - Saravanakumar Manickam
- Department of Chemistry, School of Advanced Sciences and Vellore Institute of Technology, Vellore-632014, India
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Marumoto M, Sakamoto M, Marumoto K, Tsuruta S, Komohara Y. Mercury and Selenium Localization in the Cerebrum, Cerebellum, Liver, and Kidney of a Minamata Disease Case. Acta Histochem Cytochem 2020; 53:147-155. [PMID: 33437101 PMCID: PMC7785461 DOI: 10.1267/ahc.20-00009] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 11/13/2020] [Indexed: 11/22/2022] Open
Abstract
Minamata disease is a methylmercury poisoning caused by consumption of marine food contaminated by man-made methylmercury environmental pollution, and its most prominent feature is marked pathological changes in the central nervous system. Morphological alterations are less pronounced in the liver and the kidney, although their mercury levels are higher than those of the brain. In marine mammals, methylmercury is known to be easily converted to inorganic mercury and it combines with selenium forming mercury selenide, which may counteract the toxicity of mercury. However, little is known about the formation of mercury and selenium complex in human organs. In the present study, we examined the cerebrum, cerebellum, liver, and kidney of a Minamata disease case to study the mercury and selenium localization using electron probe microanalysis. Our results indicated the mercury and selenium localization in the specified tissue of the brain, liver, and kidney such as glial cells, Kupffer cells, and renal tubules.
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Affiliation(s)
| | | | | | - Shozo Tsuruta
- Department of Dental Material Science, School of Dentistry, Aichi Gakuin University
| | - Yoshihiro Komohara
- Department of Cell Pathology, Graduate School of Medical Sciences, Faculty of Life Sciences, Kumamoto University
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16
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Raymond LJ, Ralston NV. Mercury: selenium interactions and health implications. Neurotoxicology 2020; 81:294-299. [DOI: 10.1016/j.neuro.2020.09.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Li R, Wu H, Ding J, Li N, Fu W, Gan L, Li Y. Transgenic merA and merB expression reduces mercury contamination in vegetables and grains grown in mercury-contaminated soil. PLANT CELL REPORTS 2020; 39:1369-1380. [PMID: 32712731 DOI: 10.1007/s00299-020-02570-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 07/16/2020] [Indexed: 06/11/2023]
Abstract
Arabidopsis, tobacco, tomato and rice with merA/merB expressed reduced mercury concentration of leaves, fruits or grains. These mercury-breathing plants produce agricultural products with acceptable levels of mercury from contaminated soil. Mercury contamination in plant food products can cause serious health risks to consumers. Transgenic approaches to enhance mercury phytoremediation have been accomplished with expression of bacterial merA and merB genes to convert toxic organic mercury to less toxic elemental mercury. However, little is known whether these genes can be used to produce safe foods from plants grown on mercury-contaminated land. We have used Arabidopsis and tobacco as model plants for leafy vegetables, and tomato and rice as representative fruit and grain crops to investigate whether merA and merB expression allows for production of safe foods from mercury-contaminated soils. Our results show that grown on heavily contaminated land with mercury, merA and merB expressing transgenic plants can produce vegetables, fruits and grains safe for human and animal consumption, while the wild-type plants cannot. The merA and merB transgenic plants can also efficiently remove mercury from soil. With increasing mercury contamination problems for the agricultural land worldwide, the use of the merA and merB genes can help produce safe food from mercury-polluted land and also remediate contaminated soils.
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Affiliation(s)
- Rui Li
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Han Wu
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jing Ding
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Nan Li
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Weimin Fu
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Lijun Gan
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Yi Li
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China.
- Department of Plant Science and Landscape Architecture, University of Connecticut, Storrs, CT, 06269, USA.
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18
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Queipo-Abad S, Lagane C, Point D. Sensitive determination of methylmercury δ 13C compound specific stable isotopic analysis by purge and trap gas chromatography combustion isotope ratio mass spectrometry. J Chromatogr A 2020; 1617:460821. [PMID: 31932087 DOI: 10.1016/j.chroma.2019.460821] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 12/17/2019] [Accepted: 12/19/2019] [Indexed: 11/17/2022]
Abstract
Despite several decades of mercury research, answering fundamental questions on where and how methylmercury (CH3Hg) toxin is naturally produced in aquatic ecosystems, is still highly challenging. Investigating complex and/or coupled processes in the context of global changes requires new high-resolution analytical tools. The purpose of the compound specific carbon stable isotopic analysis (δ13C-CSIA) of the methyl group of methylmercury (CH3Hg), is to explore how the carbon cycle contributes to CH3Hg sources and formation pathways. The main problem associated with recent CH3Hg δ13C-CSIA methods is the limited sensitivity when using Liquid Injection (LI)-GC-C-IRMS techniques, requiring several micrograms of CH3Hg (as Hg). In this work, we present the development and application of an original Purge-&-Trap system (PT) coupled to a GC-C-IRMS with the purpose of transferring and analyzing the total amount of CH3Hg available in a sample vial in the low nanogram range. The new PT-GC-C-IRMS system enhance the sensitivity by a factor better than 200, relative to LI-GC-C-IRMS, by minimizing the sample mass requirements. The δ13CCH3Hg values obtained, following the same sample derivatization approach coupled to PT-GC-C-IRMS (-53.5 ± 1.9 ‰), were in good agreement with the ones obtained in a previous study (-53.8 ± 1.1 ‰). The standard solution was prepared from the same salt, requesting only 25-200 ng of CH3Hg (as Hg). This new methodology represents a milestone towards the analysis of large array of biological samples displaying CH3Hg concentrations in the low-mid ng g-1 range, in order to explore the meaning of the carbon stable isotopic signature of CH3Hg in the environment.
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Affiliation(s)
- Silvia Queipo-Abad
- Department of Physical and Analytical Chemistry, University of Oviedo, Julián Clavería, 8, 33006 Oviedo Spain
| | - Christelle Lagane
- Observatoire Midi-Pyrénées, Géosciences Environnement Toulouse, UMR CNRS 5563/IRD 234/Université Paul Sabatier Toulouse 3, 14 avenue Edouard Belin, 31400 Toulouse, France
| | - David Point
- Observatoire Midi-Pyrénées, Géosciences Environnement Toulouse, UMR CNRS 5563/IRD 234/Université Paul Sabatier Toulouse 3, 14 avenue Edouard Belin, 31400 Toulouse, France.
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19
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James AK, Nehzati S, Dolgova NV, Sokaras D, Kroll T, Eto K, O'Donoghue JL, Watson GE, Myers GJ, Krone PH, Pickering IJ, George GN. Rethinking the Minamata Tragedy: What Mercury Species Was Really Responsible? ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:2726-2733. [PMID: 31951385 DOI: 10.1021/acs.est.9b06253] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Industrial release of mercury into the local Minamata environment with consequent poisoning of local communities through contaminated fish and shellfish consumption is considered the classic case of environmental mercury poisoning. However, the mercury species in the factory effluent has proved controversial, originally suggested as inorganic, and more recently as methylmercury species. We used newly available methods to re-examine the cerebellum of historic Cat 717, which was fed factory effluent mixed with food to confirm the source. Synchrotron high-energy-resolution fluorescence detection-X-ray absorption spectroscopy revealed sulfur-bound organometallic mercury with a minor β-HgS phase. Density functional theory indicated energetic preference for α-mercuri-acetaldehyde as a waste product of aldehyde production. The consequences of this alternative species in the "classic" mercury poisoning should be re-evaluated.
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Affiliation(s)
- Ashley K James
- Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, Saskatchewan S7N 5E2, Canada
- Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5B3, Canada
| | - Susan Nehzati
- Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, Saskatchewan S7N 5E2, Canada
| | - Natalia V Dolgova
- Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, Saskatchewan S7N 5E2, Canada
| | - Dimosthenis Sokaras
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Stanford University, Menlo Park, California 94025, United States
| | - Thomas Kroll
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Stanford University, Menlo Park, California 94025, United States
| | - Komyo Eto
- National Institute for Minamata Disease, Ministry of the Environment,, Kumamoto 867-0008, Japan
| | - John L O'Donoghue
- Department of Environmental Medicine, School of Medicine and Dentistry, University of Rochester, Rochester, New York 14642, United States
| | - Gene E Watson
- Department of Environmental Medicine, School of Medicine and Dentistry, University of Rochester, Rochester, New York 14642, United States
- Eastman Institute for Oral Health, School of Medicine and Dentistry, University of Rochester, Rochester, New York 14642, United States
| | - Gary J Myers
- Department of Environmental Medicine, School of Medicine and Dentistry, University of Rochester, Rochester, New York 14642, United States
- Departments of Neurology and Pediatrics, School of Medicine and Dentistry, University of Rochester, Rochester, New York 14642, United States
| | - Patrick H Krone
- Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, Saskatchewan S7N 5E2, Canada
- Department of Anatomy, Physiology and Pharmacology, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada
| | - Ingrid J Pickering
- Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, Saskatchewan S7N 5E2, Canada
- Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5B3, Canada
- Department of Chemistry, University of Saskatchewan, Saskatoon, SK S7N 5C9, Canada
| | - Graham N George
- Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, Saskatchewan S7N 5E2, Canada
- Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5B3, Canada
- Department of Chemistry, University of Saskatchewan, Saskatoon, SK S7N 5C9, Canada
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20
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Li M, Ruan S, Yang H, Zhang Y, Yang Y, Song J, Xu X, Wang Z, Wang S. Nopinone-based AIE-active dual-functional fluorescent chemosensor for Hg2+ and Cu2+ and its environmental and biological applications. Dalton Trans 2020; 49:15299-15309. [DOI: 10.1039/d0dt02888f] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A nopinone-based dual-functional fluorescent probe for Hg2+ and Cu2+ and its applications in environmental analysis and bioimaging.
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Affiliation(s)
- Mingxin Li
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources
- College of Chemical Engineering
- College of Light Industry and Food
- Nanjing Forestry University
- Nanjing
| | - Shutang Ruan
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources
- College of Chemical Engineering
- College of Light Industry and Food
- Nanjing Forestry University
- Nanjing
| | - Haiyan Yang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources
- College of Chemical Engineering
- College of Light Industry and Food
- Nanjing Forestry University
- Nanjing
| | - Yan Zhang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources
- College of Chemical Engineering
- College of Light Industry and Food
- Nanjing Forestry University
- Nanjing
| | - Yiqin Yang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources
- College of Chemical Engineering
- College of Light Industry and Food
- Nanjing Forestry University
- Nanjing
| | - Jie Song
- Department of Chemistry and Biochemistry
- University of Michigan-Flint
- Flint
- USA
| | - Xu Xu
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources
- College of Chemical Engineering
- College of Light Industry and Food
- Nanjing Forestry University
- Nanjing
| | - Zhonglong Wang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources
- College of Chemical Engineering
- College of Light Industry and Food
- Nanjing Forestry University
- Nanjing
| | - Shifa Wang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources
- College of Chemical Engineering
- College of Light Industry and Food
- Nanjing Forestry University
- Nanjing
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21
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Dunham-Cheatham SM, Klingler K, Peacock M, Teglas MB, Gustin MS. What is in commercial cat and dog food? The case for mercury and ingredient testing. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 684:276-280. [PMID: 31153074 DOI: 10.1016/j.scitotenv.2019.05.337] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 05/19/2019] [Accepted: 05/22/2019] [Indexed: 06/09/2023]
Abstract
Commercial pet foods should be safe for long-term feeding. However, recent recalls and lawsuits have eroded public trust in pet food companies and products. Recent studies have identified high concentrations of mercury, a potent neurotoxin, in pet food products. Here we posit that pet food products require independent testing to verify safety and compliance with developed Food and Drug Administration and Association of American Feed Control Officials standards, and initiate a discussion as to why including quantification of mercury and methylmercury, as well as the identification of adulteration, are important to such testing protocols. The outcomes of these discussions will be multi-faceted: initiating the impetus to investigate the quality and label accuracy of pet foods; ensuring product safety; promoting transparency within the pet food industry; informing veterinary practices regarding pet food recommendations; providing data for evidence-based policy and regulatory enforcement; and working toward fulfilling the National Research Council's call for research that identifies levels of contaminants in animal feeds and residues in human foods.
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Affiliation(s)
- Sarrah M Dunham-Cheatham
- Department of Natural Resources and Environmental Science, University of Nevada, Reno, NV 89557, USA.
| | - Kelly Klingler
- Department of Biology, University of Nevada, Reno, NV 89557, USA
| | - Mary Peacock
- Department of Biology, University of Nevada, Reno, NV 89557, USA
| | - Michael B Teglas
- Department of Agriculture, Veterinary and Range Sciences, University of Nevada, Reno, NV 89557, USA
| | - Mae Sexauer Gustin
- Department of Natural Resources and Environmental Science, University of Nevada, Reno, NV 89557, USA.
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22
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Zhang Y, Zhang C, Wu Y, Zhao B, Wang L, Song B. A novel water-soluble naked-eye probe with a large Stokes shift for selective optical sensing of Hg 2+ and its application in water samples and living cells. RSC Adv 2019; 9:23382-23389. [PMID: 35514512 PMCID: PMC9067316 DOI: 10.1039/c9ra03924d] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 07/24/2019] [Indexed: 12/11/2022] Open
Abstract
A water-soluble and colorimetric fluorescent probe with a large Stokes shift (139 nm) for rapidly detecting Hg2+, namely Hcy-mP, was synthesized by using an indole derivative and 2,4-dihydroxybenzaldehyde as starting materials. This probe demonstrates good selectivity for Hg2+ over other metal ions including Ag+, Pb2+, Cd2+, Cr3+, Zn2+, Fe3+, Co2+, Ni2+, Cu2+, K+, Na+, Mg2+, and Ca2+ in aqueous solution. With the increase in concentration of Hg2+, the color of the solution changed from pale yellow to pink and the fluorescence intensity decreased slightly. When 5-equivalents of EDTA were added to the solution with Hg2+, the fluorescence intensity of this probe was restored. The probe has been applied to the detection of Hg2+ in real water samples. Moreover, this probe was confirmed to have low cytotoxicity and excellent cell membrane permeability. The effect of Hcy-mP-Hg2+ towards living cells by confocal fluorescence was also investigated.
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Affiliation(s)
- Yingying Zhang
- College of Chemistry and Chemical Engineering, Qiqihar University Qiqihar 161006 Heilongjiang China +86 13946272680
| | - Chao Zhang
- College of Chemistry and Chemical Engineering, Qiqihar University Qiqihar 161006 Heilongjiang China +86 13946272680
| | - Yingnan Wu
- Institute of Molecular Sciences and Engineering, Shandong University Qingdao 266237 Shandong China
| | - Bing Zhao
- College of Chemistry and Chemical Engineering, Qiqihar University Qiqihar 161006 Heilongjiang China +86 13946272680
| | - Liyan Wang
- College of Chemistry and Chemical Engineering, Qiqihar University Qiqihar 161006 Heilongjiang China +86 13946272680
| | - Bo Song
- College of Chemistry and Chemical Engineering, Qiqihar University Qiqihar 161006 Heilongjiang China +86 13946272680
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23
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Queipo-Abad S, González PR, Martínez-Morillo E, Davis WC, García Alonso JI. Concentration of mercury species in hair, blood and urine of individuals occupationally exposed to gaseous elemental mercury in Asturias (Spain) and its comparison with individuals from a control group formed by close relatives. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 672:314-323. [PMID: 30959298 DOI: 10.1016/j.scitotenv.2019.03.367] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 03/22/2019] [Accepted: 03/23/2019] [Indexed: 06/09/2023]
Abstract
Between November 19th, 2012 and December 3rd, 2012, 50 workers were intoxicated with gaseous Hg in San Juan de Nieva (Asturias, Spain) during the maintenance of a heat exchanger of a zinc manufacturer. We have quantified the concentration of methylmercury (MeHg), ethylmercury (EtHg) and Hg(II) in blood, hair and urine samples of those individuals taken three years after the accident. Blood, hair and urine of their closest relatives were also analyzed to assess whether the mercury burden present in the intoxicated individuals was due to the occupational exposure or to environmental or lifestyle-related factors. The determination of the mercury species in the samples was carried out applying multiple spiking Isotope Dilution GC-ICP-MS. This procedure corrects for possible interconversion reactions between the Hg species during the sample preparation procedure. Linear correlations were observed for both groups when plotting MeHg in blood vs MeHg in hair, and MeHg in hair vs Hg (II) in urine. The concentrations of Hg species in the intoxicated individuals were not significantly different from those obtained in the control group except for MeHg in blood. Significantly higher levels of MeHg in blood were obtained in some of the intoxicated individuals who had not consumed fish or seafood since the accident. A different correlation between MeHg in hair and MeHg in blood was obtained for these individuals compared to the control group who showed a hair-to-blood ratio consistent with the reported value for people exposed to Hg via fish consumption. Our results suggest that ingested MeHg followed the same pathway of deposition in hair in exposed and non-exposed individuals. However, the exposed individuals with high MeHg levels in blood showed a significantly different extent of MeHg deposition in hair compared to the control group.
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Affiliation(s)
- Silvia Queipo-Abad
- Department of Physical and Analytical Chemistry, University of Oviedo, Julián Clavería, 8, 33006 Oviedo, Spain
| | - Pablo Rodríguez González
- Department of Physical and Analytical Chemistry, University of Oviedo, Julián Clavería, 8, 33006 Oviedo, Spain.
| | - Eduardo Martínez-Morillo
- Service of Clinical Biochemistry, Laboratory of Medicine, Central University Hospital of Asturias (HUCA), 33011 Oviedo, Spain
| | - W Clay Davis
- Chemical Sciences Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
| | - José Ignacio García Alonso
- Department of Physical and Analytical Chemistry, University of Oviedo, Julián Clavería, 8, 33006 Oviedo, Spain
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24
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A smart optical probe for detection and discrimination of Zn2+, Cd2+ and Hg2+ at nano-molar level in real samples. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.04.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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25
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Gao T, Huang X, Huang S, Dong J, Yuan K, Feng X, Liu T, Yu K, Zeng W. Sensitive Water-Soluble Fluorescent Probe Based on Umpolung and Aggregation-Induced Emission Strategies for Selective Detection of Hg 2+ in Living Cells and Zebrafish. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:2377-2383. [PMID: 30707026 DOI: 10.1021/acs.jafc.8b06895] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Using Hg2+-induced umpolung reaction and aggregation induced emission (AIE), we have rationally developed a water-soluble fluorescent probe 2,2'-(((4-(4,5-bis(4-methoxyphenyl)-1-phenyl-1H-imidazol-2-yl)phenyl)methylene)bis(sulfanediyl))diethanol (MPIPBS) for Hg2+ detection. MPIPBS was found to have high selectivity and sensitivity toward Hg2+ detection. The mechanism of MPIPBS response to Hg2+ was verified by 1H NMR titration, HPLC, and HRMS spectroscopy. The detection limit was examined to be 1.45 nM, which is lower than most reported probes for Hg2+. Taking advantage of excellent optical properties of AIEgen, a paper based sensor for Hg2+ detection was fabricated by immobilizing the MPIPBS on Waterman test paper. Meanwhile, MPIPBS showed satisfactory analytical performance in real water and urine samples. Further, thanks to the high water solubility, cell membrane permeability and low cytotoxicity, MPIPBS was further used to detect Hg2+ both in living cells and zebrafish. We anticipate that the prepared probe was available to detect Hg2+ in environment and biosamples.
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Affiliation(s)
- Tang Gao
- Xiangya School of Pharmaceutical Sciences , Central South University , Changsha 410013 , China
| | - Xueyan Huang
- Xiangya School of Pharmaceutical Sciences , Central South University , Changsha 410013 , China
| | - Shuai Huang
- Xiangya School of Pharmaceutical Sciences , Central South University , Changsha 410013 , China
| | - Jie Dong
- Central South University of Forestry and Technology , Changsha 410004 , China
| | - Kai Yuan
- Xiangya Hospital , Central South University , Changsha 410078 , China
| | - Xueping Feng
- Xiangya Hospital , Central South University , Changsha 410078 , China
| | - Tingting Liu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica , Chinese Academy of Sciences , Shanghai 201203 , China
| | - Kunqian Yu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica , Chinese Academy of Sciences , Shanghai 201203 , China
| | - Wenbin Zeng
- Xiangya School of Pharmaceutical Sciences , Central South University , Changsha 410013 , China
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26
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Huang Y, Ren J, Qu X. Nanozymes: Classification, Catalytic Mechanisms, Activity Regulation, and Applications. Chem Rev 2019; 119:4357-4412. [PMID: 30801188 DOI: 10.1021/acs.chemrev.8b00672] [Citation(s) in RCA: 1492] [Impact Index Per Article: 298.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Because of the high catalytic activities and substrate specificity, natural enzymes have been widely used in industrial, medical, and biological fields, etc. Although promising, they often suffer from intrinsic shortcomings such as high cost, low operational stability, and difficulties of recycling. To overcome these shortcomings, researchers have been devoted to the exploration of artificial enzyme mimics for a long time. Since the discovery of ferromagnetic nanoparticles with intrinsic horseradish peroxidase-like activity in 2007, a large amount of studies on nanozymes have been constantly emerging in the next decade. Nanozymes are one kind of nanomaterials with enzymatic catalytic properties. Compared with natural enzymes, nanozymes have the advantages such as low cost, high stability and durability, which have been widely used in industrial, medical, and biological fields. A thorough understanding of the possible catalytic mechanisms will contribute to the development of novel and high-efficient nanozymes, and the rational regulations of the activities of nanozymes are of great significance. In this review, we systematically introduce the classification, catalytic mechanism, activity regulation as well as recent research progress of nanozymes in the field of biosensing, environmental protection, and disease treatments, etc. in the past years. We also propose the current challenges of nanozymes as well as their future research focus. We anticipate this review may be of significance for the field to understand the properties of nanozymes and the development of novel nanomaterials with enzyme mimicking activities.
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Affiliation(s)
- Yanyan Huang
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun , Jilin 130022 , China.,College of Light Industry and Food Engineering , Nanjing Forestry University , Nanjing 210037 , China
| | - Jinsong Ren
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun , Jilin 130022 , China
| | - Xiaogang Qu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun , Jilin 130022 , China
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27
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Padhan SK, Palei J, Rana P, Murmu N, Sahu SN. Sequential displacement strategy for selective and highly sensitive detection of Zn 2+, Hg 2+ and S 2- ions: An approach toward a molecular keypad lock. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 208:271-284. [PMID: 30340207 DOI: 10.1016/j.saa.2018.10.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 10/07/2018] [Accepted: 10/11/2018] [Indexed: 05/14/2023]
Abstract
A thiocarbonohydrazone locked salicylidene based macrocycle ligand L has been synthesized and its ion sensing properties were examined by UV-visible and fluorescence spectroscopy. The macrocycle serves as a highly selective colorimetric sensor for Hg2+ ions while it acts as an excellent fluorescent sensor for Zn2+ ions by exhibiting a green fluorescence at 498 nm even in the presence of interfering ions. A detailed analysis of binding characteristics such as complex stoichiometry, association constant and detection limits of L toward Hg2+ and Zn2+ ions were evaluated by UV-visible and fluorescence experiments which revealed a stronger binding affinity and higher detection limit of L toward the mercury ions. Further, the sequential displacement strategy for the chromofluorogenic detection of Zn2+, Hg2+ and S2- ions by ligand L, has been studied comprehensively. Finally, the ion-responsive fluorescence output signal of L were employed to design a molecular keypad lock which could be accessible by two users having two different set of chemical passwords (inputs) through distinguishable optical trajectories.
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Affiliation(s)
- Subrata Kumar Padhan
- School of Chemistry, Sambalpur University, Jyoti Vihar, Burla 768 019, Odisha, India
| | - Jitendra Palei
- School of Chemistry, Sambalpur University, Jyoti Vihar, Burla 768 019, Odisha, India
| | - Punam Rana
- School of Chemistry, Sambalpur University, Jyoti Vihar, Burla 768 019, Odisha, India
| | - Narayan Murmu
- School of Chemistry, Sambalpur University, Jyoti Vihar, Burla 768 019, Odisha, India
| | - Satya Narayan Sahu
- School of Chemistry, Sambalpur University, Jyoti Vihar, Burla 768 019, Odisha, India.
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28
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Tang L, Yu H, Zhong K, Gao X, Li J. An aggregation-induced emission-based fluorescence turn-on probe for Hg2+ and its application to detect Hg2+ in food samples. RSC Adv 2019; 9:23316-23323. [PMID: 35514521 PMCID: PMC9067245 DOI: 10.1039/c9ra04440j] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 07/22/2019] [Indexed: 11/21/2022] Open
Abstract
In this work, we presented a new tetraphenylethene-derived fluorescent probe TPE-M for Hg2+ detection in an aqueous solution. Probe TPE-M is molecularly dissolved in CH3OH/PBS (20 mM, pH = 7.4) (3 : 7, v/v) mixed solution and is almost non-emissive. Reaction of TPE-M with Hg2+ leads to release of an AIE-active precursor 4, and results in a significant fluorescence enhancement. The Hg2+ recognition process has some distinct advantages including rapid response, high selectivity and sensitivity, strong anti-interference ability, and a low detection limit (4.16 × 10−6 M). Moreover, the probe is applicable to detect Hg2+ in real food samples such as shrimp, crab and teas, suggesting the practical applicability of TPE-M. A new AIE-based fluorescent probe TPE-M for Hg2+ detection in an aqueous solution has been developed.![]()
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Affiliation(s)
- Lijun Tang
- College of Chemistry and Chemical Engineering
- Bohai University
- Jinzhou
- China
| | - Haili Yu
- College of Chemistry and Chemical Engineering
- Bohai University
- Jinzhou
- China
| | - Keli Zhong
- College of Chemistry and Chemical Engineering
- Bohai University
- Jinzhou
- China
| | - Xue Gao
- College of Food Science and Technology
- Bohai University
- National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products
- The Fresh Food Storage and Processing Technology Research Institute of Liaoning Provincial Universities
- Jinzhou
| | - Jianrong Li
- College of Food Science and Technology
- Bohai University
- National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products
- The Fresh Food Storage and Processing Technology Research Institute of Liaoning Provincial Universities
- Jinzhou
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Duan Q, Lv X, Liu C, Geng Z, Zhang F, Sheng W, Wang Z, Jia P, Li Z, Zhu H, Zhu B. Dichlororesorufin-Based Colorimetric and Fluorescent Probe for Ultrasensitive Detection of Mercury Ions in Living Cells and Zebrafish. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b04386] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Qingxia Duan
- School of Water Conservancy and Environment, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization, University of Jinan, Jinan 250022, China
| | - Xiaoyu Lv
- School of Water Conservancy and Environment, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization, University of Jinan, Jinan 250022, China
| | - Caiyun Liu
- School of Water Conservancy and Environment, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization, University of Jinan, Jinan 250022, China
| | - Zhuofan Geng
- School of Water Conservancy and Environment, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization, University of Jinan, Jinan 250022, China
| | - Fenfen Zhang
- School of Water Conservancy and Environment, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization, University of Jinan, Jinan 250022, China
| | - Wenlong Sheng
- Biology Institute of Shandong Academy of Sciences, Qilu University of Technology (Shandong Academy of Sciences), 19 Keyuan Road, Lixia District, Jinan 250014, China
| | - Zuokai Wang
- School of Water Conservancy and Environment, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization, University of Jinan, Jinan 250022, China
| | - Pan Jia
- School of Water Conservancy and Environment, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization, University of Jinan, Jinan 250022, China
| | - Zilu Li
- School of Water Conservancy and Environment, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization, University of Jinan, Jinan 250022, China
| | - Hanchuang Zhu
- School of Water Conservancy and Environment, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization, University of Jinan, Jinan 250022, China
| | - Baocun Zhu
- School of Water Conservancy and Environment, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization, University of Jinan, Jinan 250022, China
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30
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Dual-Emission Fluorescent Microspheres for the Detection of Biothiols and Hg 2. MATERIALS 2018; 11:ma11112232. [PMID: 30423958 PMCID: PMC6267099 DOI: 10.3390/ma11112232] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 11/07/2018] [Accepted: 11/07/2018] [Indexed: 02/03/2023]
Abstract
Dual-emission nanosensor for Hg2+ detection was prepared by coupling CA-AEAPMS on the surface of RBS-doped modified silica microspheres. The CA-AEAPMS was synthesized by using N-(β-aminoethyl)-γ-aminopropyl methyldimethoxysilane (AEAPMS) and citric acid as the main raw material. The obtained nanosensor showed characteristic fluorescence emissions of Rhodamine B (red) and CA-AEAPMS (blue) under a single excitation wavelength (360 nm). Upon binding to Hg2+, only the fluorescence of CA-AEAPMS was quenched, resulting in the ratiometric fluorescence response of the dual-emission silica microspheres. This ratiometric nanosensor exhibited good selectivity to Hg2+ over other metal ions, because of the amide groups on the surface of CA-AEAPMS serving as the Hg2+ recognition sites. The ratio of F450/F580 linearly decreased with the increasing of Hg2+ concentration in the range of 0 to 3 × 10-6 M, and a detection limit was as low as 97 nM was achieved. Then, the addition of three thiol-containing amino acids (Cys, Hcy, GSH) to the quenched fluorescence solution with Hg2+ can restore the fluorescence, and the detection limits of the three biothiols (Cys, Hcy, GSH) are 0.133 μM, 0.086 μM, and 0.123 μM, respectively.
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Abstract
Organic mercury, especially methylmercury, poisoning causes chronic neurological disease predominantly affecting the brain. There have been documented exposures from eating fish from contaminated waters in Japan and in northwestern Ontario and in Iraq from eating bread made from seed wheat treated with methylmercuric fungicide. The neurological disease is called Minamata disease in Japan. Visual field constriction due to involvement of the calcarine cortex, sensory disturbance due to involvement of the somatosensory cortex, and cerebellar ataxia due to involvement of granule cell neurons of the cerebellum are common and characteristic features due to methylmercury poisoning. Other neurological features include dysarthria, postural and action tremor, cognitive impairment, and hearing loss and dysequilibrium. In contrast, peripheral nerve disease is more characteristic of inorganic mercury intoxication. Similarly, psychosis is more typical of exposure to inorganic mercury, which has been documented in the felt hat industry ("mad hatter"). Laboratory tests (e.g., on blood and hair and toenail samples) are of limited value in the assessment of chronic neurological disease due to mercury poisoning because they may not reflect remote neuronal injury due to mercury. Methylmercury also causes injury to fetal brains during development. There is no effective treatment.
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32
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Acquavita A, Bettoso N. Mercury and selenium in the grass goby Zosterisessor ophiocephalus (Pisces: Gobiidae) from a mercury contaminated Mediterranean lagoon. MARINE POLLUTION BULLETIN 2018; 135:75-82. [PMID: 30301094 DOI: 10.1016/j.marpolbul.2018.07.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 06/23/2018] [Accepted: 07/02/2018] [Indexed: 06/08/2023]
Abstract
Mercury (Hg) and its bioaccumulation are important in evaluating the health risk through fish consumption. In the Marano and Grado Lagoon a historical contamination originating from both mining and industrial sources is present. In this study the Hg levels in the grass goby and the protective effect of selenium (Se) were determined as a function of size, sex, sampling sites and season. Mercury often exceeded the limit for commercialisation, whereas Se was mostly constant being homeostatically regulated. The mean Se/Hg molar ratio showed about 40% of data >1.0 and the HBVSe index was on average equal to 0.0. Thus, grass goby of this area is not a Se source food indicated for pregnant and/or breastfeeding women, but its occasional consumption would appear to have no contraindications if integrated with other Se rich foods: the ingestion of about 10 fish fillets per week can be safely consumed by adults.
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Affiliation(s)
- Alessandro Acquavita
- Environmental Protection Agency of Friuli Venezia Giulia, ARPA FVG, Via Cairoli 14, 33057 Palmanova (UD), Italy.
| | - Nicola Bettoso
- Environmental Protection Agency of Friuli Venezia Giulia, ARPA FVG, Via Cairoli 14, 33057 Palmanova (UD), Italy
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33
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Bhowmick R, Musha Islam AS, Sasmal M, Katarkar A, Ali M. A rhodamine hydrazide– 4-nitroindole-3-carboxaldehyde based turn on Hg 2+ chemosensor: cytoplasmic live cell imaging, logic gate and memory device applications and computational studies. J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1486400] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Rahul Bhowmick
- Department of Chemistry, Jadavpur University, Kolkata, India
| | | | - Mihir Sasmal
- Department of Chemistry, Jadavpur University, Kolkata, India
| | - Atul Katarkar
- Department of Biochemistry, University of Lausanne, Epalinges, Switzerland
| | - Mahammad Ali
- Department of Chemistry, Jadavpur University, Kolkata, India
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34
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Lan L, Niu Q, Li T. A highly selective colorimetric and ratiometric fluorescent probe for instantaneous sensing of Hg2+ in water, soil and seafood and its application on test strips. Anal Chim Acta 2018; 1023:105-114. [PMID: 29754600 DOI: 10.1016/j.aca.2018.03.023] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 03/15/2018] [Accepted: 03/20/2018] [Indexed: 12/11/2022]
Abstract
A new simple and efficient oligothiophene-based colorimetric and ratiometric fluorescent probe has been developed for highly sensitive and fast detection of Hg2+ in water, soil and seafood. The probe 5-(1,3-dithiolan-2-yl)-2,2':5',2″-terthiophene 3 TS can selectively detect Hg2+ via the Hg2+-promoted deprotection reaction of thioacetals, which caused a remarkable color change from colorless to yellow and a strong fluorescence enhancement with emission color varying from blue to yellow, enabling naked-eye detection of Hg2+. The probe shows high sensitivity with the detection limit down to 1.03 × 10-8 M. Visual color changes of 3 TS were observed on filter paper and TLC testing strips when they were impregnated on testing strips and immersed in Hg2+ solution. Moreover, the probe 3 TS has been successfully used to rapidly detect trace amounts of hazardous Hg2+ ions in tap, distilled, river and lake water, cropland soil, fish, shrimp and kelp samples with acceptable results and good recoveries.
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Affiliation(s)
- Linxin Lan
- Shandong Provincial Key Laboratory of Fine Chemicals, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, People's Republic of China
| | - Qingfen Niu
- Shandong Provincial Key Laboratory of Fine Chemicals, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, People's Republic of China.
| | - Tianduo Li
- Shandong Provincial Key Laboratory of Fine Chemicals, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, People's Republic of China
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35
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Chua EM, Flint N, Wilson SP, Vink S. Potential for biomonitoring metals and metalloids using fish condition and tissue analysis in an agricultural and coal mining region. CHEMOSPHERE 2018; 202:598-608. [PMID: 29597177 DOI: 10.1016/j.chemosphere.2018.03.080] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 02/24/2018] [Accepted: 03/11/2018] [Indexed: 06/08/2023]
Abstract
Agricultural and mining activities contribute to metal inputs in freshwater ecosystems around the world, which can in turn bioaccumulate in biota such as fish. Monitoring of metals loads in biota thus provides insight into the concentrations of bioavailable metals within the environment. Little research has been conducted on the potential of Australian freshwater fish for biomonitoring metals. Within the Fitzroy Basin of Central Queensland, a major agricultural and coal mining region, three commonly-encountered fish taxa were analysed for tissue metal loads. Arsenic concentrations in Nematalosa erebi and Melanotaenia splendida splendida tissue were elevated (above Food Standards Australia and New Zealand (FSANZ) guidelines), with highest concentrations in N. erebi liver tissue (up to 5.14 μg/g). Lead concentrations were above the FSANZ guidelines in all three fish taxa analysed, with highest concentrations in Hypseleotrid full-body tissue (up to 5.99 μg/g). Selenium in M. s. splendida and N. erebi tissue was positively correlated with total selenium in water (p < 0.05; r = 0.68 and 0.87 respectively). Environmental boron, selenium and nickel concentrations were positively correlated with N. erebi liver tissue metals. N. erebi hepatosomatic index was negatively correlated with dissolved arsenic, manganese, and total phosphorus (in water). The results highlight that M. s. splendida and N. erebi yield bioindicators which are responsive to environmental metals, and thus have potential for use in biomonitoring metals. The two species are also widespread along the east coast of Australia, there is thus a strong potential for applying the results to other regions within Australia.
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Affiliation(s)
- Evan M Chua
- School of Health, Medical and Applied Sciences, Central Queensland University, North Rockhampton, QLD 4702, Australia.
| | - Nicole Flint
- School of Health, Medical and Applied Sciences, Central Queensland University, North Rockhampton, QLD 4702, Australia
| | - Scott P Wilson
- Centre for Energy and Environmental Contaminants, Department of Environmental Sciences, Macquarie University, North Ryde, NSW 2113, Australia
| | - Sue Vink
- Centre for Water in the Minerals Industry, Sustainable Minerals Institute, University of Queensland, St Lucia, QLD 4072, Australia
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36
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Wang L, Fan Y, Guan X, Qu W, Lin Q, Yao H, Wei T, Zhang Y. A novel naphthalimide–glutathione chemosensor for fluorescent detection of Fe3+ and Hg2+ in aqueous medium and its application. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.06.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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37
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Said AI, Georgiev NI, Bojinov VB. Synthesis of a single 1,8-naphthalimide fluorophore as a molecular logic lab for simultaneously detecting of Fe 3+, Hg 2+ and Cu 2. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 196:76-82. [PMID: 29433042 DOI: 10.1016/j.saa.2018.02.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 01/13/2018] [Accepted: 02/04/2018] [Indexed: 06/08/2023]
Abstract
A novel fluorescence sensing 1,8-naphthalimide fluorophore is synthesized and investigated. The novel probe comprising two different binding moieties is capable to detect selectively Fe3+ over the other representative metal ions as well as a combination of biologically important cations such as Fe3+, Cu2+ and Hg2+ in the physiological range without an interfering effect of the pHs. Due to the remarkable fluorescence changes in the presence of Fe3+, Hg2+ and Cu2+ ions, INH and AND logic gates are executed and the system is able to act as a single output combinatorial logic circuit with three chemical inputs.
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Affiliation(s)
- Awad I Said
- Department of Chemistry, Faculty of Science, Assiut University, Assiut, Egypt
| | - Nikolai I Georgiev
- Department of Organic Synthesis, University of Chemical Technology and Metallurgy, 8 Kliment Ohridsky Str., 1756 Sofia, Bulgaria
| | - Vladimir B Bojinov
- Department of Organic Synthesis, University of Chemical Technology and Metallurgy, 8 Kliment Ohridsky Str., 1756 Sofia, Bulgaria.
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38
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Biswas S, Balodia N, Bellare J. Comparative neurotoxicity study of mercury-based inorganic compounds including Ayurvedic medicines Rasasindura and Kajjali in zebrafish model. Neurotoxicol Teratol 2018; 66:25-34. [DOI: 10.1016/j.ntt.2018.01.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 01/16/2018] [Accepted: 01/17/2018] [Indexed: 01/17/2023]
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39
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Wang K, Li J, Ji S, Li L, Qiu Z, Pan C, Zhang J, Huo Y. Fluorescence probes based on AIE luminogen: application for sensing Hg2+ in aqueous media and cellular imaging. NEW J CHEM 2018. [DOI: 10.1039/c8nj02245c] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
S1 and S2 could be applied for sensing Hg2+ in aqueous media and cellular imaging with remarkable AIEE.
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Affiliation(s)
- Kai Wang
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Jiajun Li
- Key Laboratory of Molecular Target & Clinical Pharmacology
- School of Pharmaceutical Sciences & the Fifth Affiliated Hospital
- Guangzhou Medical University
- Guangzhou 511436
- China
| | - Shaomin Ji
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Lujun Li
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Zhipeng Qiu
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Chengqiang Pan
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Jianye Zhang
- Key Laboratory of Molecular Target & Clinical Pharmacology
- School of Pharmaceutical Sciences & the Fifth Affiliated Hospital
- Guangzhou Medical University
- Guangzhou 511436
- China
| | - Yanping Huo
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- China
- Guangdong Engineering Research Center for Scientific Research and Biochemical Detection reagent
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40
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Tümay SO, Uslu A, Ardıç Alidağı H, Kazan HH, Bayraktar C, Yolaçan T, Durmuş M, Yeşilot S. A systematic series of fluorescence chemosensors with multiple binding sites for Hg(ii) based on pyrenyl-functionalized cyclotriphosphazenes and their application in live cell imaging. NEW J CHEM 2018. [DOI: 10.1039/c8nj02482k] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A systematic series of fluorescence chemosensors based on cyclotriphosphazene derivatives were designed, synthesized, and evaluated for their sensing behaviors toward metal ions.
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Affiliation(s)
| | - Aylin Uslu
- Department of Chemistry
- Gebze Technical University
- Kocaeli
- Turkey
| | | | - Hasan Hüseyin Kazan
- Department of Biological Sciences
- Middle East Technical University
- Ankara
- Turkey
| | - Cansu Bayraktar
- Department of Biological Sciences
- Middle East Technical University
- Ankara
- Turkey
| | - Tutku Yolaçan
- Department of Chemistry
- Gebze Technical University
- Kocaeli
- Turkey
| | - Mahmut Durmuş
- Department of Chemistry
- Gebze Technical University
- Kocaeli
- Turkey
| | - Serkan Yeşilot
- Department of Chemistry
- Gebze Technical University
- Kocaeli
- Turkey
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41
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Bellum S, Bawa B, Thuett KA, Stoica G, Abbott LC. Changes in Biochemical Processes in Cerebellar Granule Cells of Mice Exposed To Methylmercury. Int J Toxicol 2017; 26:261-9. [PMID: 17564908 DOI: 10.1080/10915810701369758] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
At postnatal day 34, male and female C57BL/6J mice were exposed orally once a day to a total of five doses totaling 1.0 or 5.0 mg/kg of methylmercuric chloride or sterile deionized water in moistened rodent chow. Eleven days after the last dose cerebellar granule cells were acutely isolated to measure reactive oxygen species (ROS) levels and mitochondrial membrane potential using CM-H2DCFDA and TMRM dyes, respectively. For visualizing intracellular calcium ion distribution using transmission electron microscopy, mice were perfused 11 days after the last dose of methylmercury (MeHg) using the oxalate-pyroantimonate method. Cytosolic and mitochondrial protein fractions from acutely isolated granule cells were analyzed for cytochrome c content using Western blot analysis. Histochemistry (Fluoro-Jade dye) and immunohistochemistry (activated caspase 3) was performed on frozen serial cerebellar sections to label granule cell death and activation of caspase 3, respectively. Granule cells isolated from MeHg-treated mice showed elevated ROS levels and decreased mitochondrial membrane potential when compared to granule cells from control mice. Electron photomicrographs of MeHg-treated granule cells showed altered intracellular calcium ion homeostasis ([Ca2+]i) when compared to control granule cells. However, in spite of these subcellular changes and moderate relocalization of cytochrome c into the cytosol, the concentrations of MeHg used in this study did not produce significant neuronal cell death/apoptosis at the time point examined, as evidenced by Fluoro-Jade and activated caspase 3 immunostaining, respectively. These results demonstrate that short-term in vivo exposure to total doses of 1.0 and 5.0 mg/kg MeHg through the most common exposure route (oral) can result in significant subcellular changes that are not accompanied by overt neuronal cell death.
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Affiliation(s)
- Sairam Bellum
- Department of Safety Assessment, Merck Research Laboratories, West Point, Pennsylvania, USA
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42
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Pathak U, Mathur S, Pandey LK. A Complementary Metal-Displacement Solid-Phase Extraction Strategy for the Sensitive and Selective Colorimetric Detection of Hg 2+. ChemistrySelect 2017. [DOI: 10.1002/slct.201700790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Uma Pathak
- Synthetic Chemistry Division; Defence R & D Establishment; Jhansi Road Gwalior- 474002 (M.P. India
| | - Sweta Mathur
- Synthetic Chemistry Division; Defence R & D Establishment; Jhansi Road Gwalior- 474002 (M.P. India
| | - Lokesh Kumar Pandey
- Synthetic Chemistry Division; Defence R & D Establishment; Jhansi Road Gwalior- 474002 (M.P. India
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43
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Wang K, Mao X, Cao L, Lv G, Dong X, He Y, Wei Y. A new 4-Amino-7-Nitro-2,1,3-Benzoxadiazole (ANBD)-Based Fluorescent Probe for the Detection of Hg2+. J Fluoresc 2017; 27:1739-1745. [DOI: 10.1007/s10895-017-2112-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Accepted: 05/08/2017] [Indexed: 01/16/2023]
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44
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Li R, Wu H, Ding J, Fu W, Gan L, Li Y. Mercury pollution in vegetables, grains and soils from areas surrounding coal-fired power plants. Sci Rep 2017; 7:46545. [PMID: 28484233 PMCID: PMC5422849 DOI: 10.1038/srep46545] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 03/22/2017] [Indexed: 11/24/2022] Open
Abstract
Mercury contamination in food can pose serious health risks to consumers and coal-fired power plants have been identified as the major source of mercury emissions. To assess the current state of mercury pollution in food crops grown near coal-fired power plants, we measured the total mercury concentration in vegetables and grain crops collected from farms located near two coal-fired power plants. We found that 79% of vegetable samples and 67% of grain samples exceeded the PTWI's food safety standards. The mercury concentrations of soil samples were negatively correlated with distances from the studied coal-fired power plants, and the mercury contents in lettuce, amaranth, water spinach, cowpea and rice samples were correlated with the mercury contents in soil samples, respectively. Also, the mercury concentrations in vegetable leaves were much higher than those in roots and the mercury content of vegetable leaves decreased significantly after water rinses. Our calculation suggests that probable weekly intake of mercury for local residents, assuming all of their vegetables and grains are from their own farmland, may exceed the toxicologically tolerable values allowed, and therefore long-term consumptions of these contaminated vegetables and grains may pose serious health risks.
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Affiliation(s)
- Rui Li
- College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, P. R. China
| | - Han Wu
- College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, P. R. China
| | - Jing Ding
- College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, P. R. China
| | - Weimin Fu
- College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, P. R. China
| | - Lijun Gan
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, P. R. China
| | - Yi Li
- College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, P. R. China
- Department of Plant Science and Landscape Architecture, University of Connecticut, Storrs, CT 06269, USA
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45
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Colón-Rodríguez A, Hannon HE, Atchison WD. Effects of methylmercury on spinal cord afferents and efferents-A review. Neurotoxicology 2017; 60:308-320. [PMID: 28041893 PMCID: PMC5447474 DOI: 10.1016/j.neuro.2016.12.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 12/21/2016] [Accepted: 12/21/2016] [Indexed: 10/20/2022]
Abstract
Methylmercury (MeHg) is an environmental neurotoxicant of public health concern. It readily accumulates in exposed humans, primarily in neuronal tissue. Exposure to MeHg, either acutely or chronically, causes severe neuronal dysfunction in the central nervous system and spinal neurons; dysfunction of susceptible neuronal populations results in neurodegeneration, at least in part through Ca2+-mediated pathways. Biochemical and morphologic changes in peripheral neurons precede those in central brain regions, despite the fact that MeHg readily crosses the blood-brain barrier. Consequently, it is suggested that unique characteristics of spinal cord afferents and efferents could heighten their susceptibility to MeHg toxicity. Transient receptor potential (TRP) ion channels are a class of Ca2+-permeable cation channels that are highly expressed in spinal afferents, among other sensory and visceral organs. These channels can be activated in numerous ways, including directly via chemical irritants or indirectly via Ca2+ release from intracellular storage organelles. Early studies demonstrated that MeHg interacts with heterologous TRP channels, though definitive mechanisms of MeHg toxicity on sensory neurons may involve more complex interaction with, and among, differentially-expressed TRP populations. In spinal efferents, glutamate receptors of the N-methyl-D-aspartate (NMDA), α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA), and possibly kainic acid (KA) classes are thought to play a major role in MeHg-induced neurotoxicity. Specifically, the Ca2+-permeable AMPA receptors, which are abundant in motor neurons, have been identified as being involved in MeHg-induced neurotoxicity. In this review, we will describe the mechanisms that could contribute to MeHg-induced spinal cord afferent and efferent neuronal degeneration, including the possible mediators, such as uniquely expressed Ca2+-permeable ion channels.
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Affiliation(s)
- Alexandra Colón-Rodríguez
- Department of Pharmacology and Toxicology, 1355 Bogue Street, Life Sciences Building Rm. B440, Michigan State University, East Lansing, MI, United States; Institute for Integrative Toxicology, 1129 Farm Lane, Food Safety and Toxicology Rm. 165, Michigan State University, East Lansing, MI, United States; Comparative Medicine and Integrative Biology Program, 784 Wilson Road, Veterinary Medical Center Rm. G-100, Michigan State University, East Lansing, MI, United States.
| | - Heidi E Hannon
- Department of Pharmacology and Toxicology, 1355 Bogue Street, Life Sciences Building Rm. B440, Michigan State University, East Lansing, MI, United States; Institute for Integrative Toxicology, 1129 Farm Lane, Food Safety and Toxicology Rm. 165, Michigan State University, East Lansing, MI, United States; Comparative Medicine and Integrative Biology Program, 784 Wilson Road, Veterinary Medical Center Rm. G-100, Michigan State University, East Lansing, MI, United States.
| | - William D Atchison
- Department of Pharmacology and Toxicology, 1355 Bogue Street, Life Sciences Building Rm. B440, Michigan State University, East Lansing, MI, United States; Institute for Integrative Toxicology, 1129 Farm Lane, Food Safety and Toxicology Rm. 165, Michigan State University, East Lansing, MI, United States; Comparative Medicine and Integrative Biology Program, 784 Wilson Road, Veterinary Medical Center Rm. G-100, Michigan State University, East Lansing, MI, United States.
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Sakamoto M, Kakita A, Domingo JL, Yamazaki H, Oliveira RB, Sarrazin SLF, Eto K, Murata K. Stable and episodic/bolus patterns of methylmercury exposure on mercury accumulation and histopathologic alterations in the nervous system. ENVIRONMENTAL RESEARCH 2017; 152:446-453. [PMID: 27450633 DOI: 10.1016/j.envres.2016.06.034] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 05/06/2016] [Accepted: 06/20/2016] [Indexed: 06/06/2023]
Abstract
The main purpose of the present study was to compare the blood and brain mercury (Hg) accumulation and neurological alterations in adult male and pregnant female/fetal rats following stable and episodic/bolus patterns of methylmercury (MeHg) exposure. In addition, MeHg accumulation in the human body was estimated by a one-compartment model using three different patterns of MeHg exposure. In the adult male rat experiment, doses of 0.3 and 1.5mg MeHg/kg/day were orally administered to the stable groups for 5 weeks, while 7-fold higher doses of 2.1 and 10.5mg MeHg/kg/once a week were administered to the bolus groups. The blood Hg levels increased constantly in the stable groups, but increased with repeated waves in the bolus groups. At completion of the experiment, there were no significant differences in the brain Hg concentrations or neurological alterations between the stable and bolus groups, when the total doses of MeHg were the same. In the pregnant female rat experiment, a dose of 1mg MeHg/kg/day was administered orally to the stable group for 20 days (until 1day before expected parturition), while a 5-fold higher dose of 5mg MeHg/kg/once every 5 days was administered to the bolus group. In the brains of the maternal/fetal rats, there were no significant differences in the Hg concentrations and neurological alterations between the stable and bolus groups. The mean Hg concentrations in the fetal brains were approximately 2-fold higher than those in the maternal brains for both stable and bolus groups. Using the one-compartment model, the Hg accumulation curves in humans at doses of 7µg MeHg/day, 48µg MeHg/once a week, and 96µg MeHg/once every 2 weeks were estimated to be similar, while the bolus groups showed dose-dependent amplitudes of repeated waves. These results suggest that stable and episodic/bolus patterns of MeHg exposure do not cause differences in Hg accumulation in the blood and brain, or in neurological alterations, when the total doses are the same.
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Affiliation(s)
- Mineshi Sakamoto
- National Institute for Minamata Disease, Kumamoto, Japan; Universidade Federal do Oeste do Pará, ICED-PPGBIO-PPGRNA-LABBEX, Santarém, Brazil.
| | - Akiyoshi Kakita
- Brain Research Institute, Niigata University, Niigata, Japan
| | - José L Domingo
- Laboratory of Toxicology and Environmental Health, School of Medicine, IISPV, Universitat "Rovira I Virgili", Reus, Spain
| | - Hiroshi Yamazaki
- Laboratory of Drug Metabolism and Pharmacokinetics, Showa Pharmaceutical University, Tokyo, Japan
| | - Ricardo B Oliveira
- Universidade Federal do Oeste do Pará, ICED-PPGBIO-PPGRNA-LABBEX, Santarém, Brazil
| | - Sandra L F Sarrazin
- Universidade Federal do Oeste do Pará, ICED-PPGBIO-PPGRNA-LABBEX, Santarém, Brazil
| | - Komyo Eto
- National Institute for Minamata Disease, Kumamoto, Japan
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47
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DUAN Q, ZHANG M, SHENG C, LIU C, WU L, MA Z, ZHAO Q, WANG Z, ZHU B. Rhodol-derived Colorimetric and Fluorescent Probe with the Receptor of Carbonothioate for the Specific Detection of Mercury Ions. ANAL SCI 2017; 33:1169-1173. [DOI: 10.2116/analsci.33.1169] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Qingxia DUAN
- School of Resources and Environment, University of Jinan, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization
| | - Meng ZHANG
- School of Resources and Environment, University of Jinan, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization
| | | | - Caiyun LIU
- School of Resources and Environment, University of Jinan, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization
| | - Liu WU
- School of Resources and Environment, University of Jinan, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization
| | - Zhenmin MA
- School of Resources and Environment, University of Jinan, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization
| | - Qiang ZHAO
- School of Resources and Environment, University of Jinan, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization
| | - Zhongpeng WANG
- School of Resources and Environment, University of Jinan, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization
| | - Baocun ZHU
- School of Resources and Environment, University of Jinan, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization
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48
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Aschner M, Syversen T, Souza DO, Rocha JBT. Metallothioneins: Mercury Species-Specific Induction and Their Potential Role in Attenuating Neurotoxicity. Exp Biol Med (Maywood) 2016; 231:1468-73. [PMID: 17018868 DOI: 10.1177/153537020623100904] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Metallothionein (MT) proteins are widespread in bacteria, fungi, plants, and eukaryotic species. They are of low molecular weight (6–7 kDa) and of the 60+ amino acid residues, 20 are cysteines. Functions attributed to MTs include the sequestration and dispersal of metal ions, primarily in zinc and copper homeostasis; regulation of the biosynthesis and activity of zinc metalloproteins, most notably zinc-dependent transcription factors; and cellular cytoprotection from reactive oxygen species, ionizing radiation, electrophilic anticancer drugs and mutagens, and metals. Observations on the abundance of MTs within the central nervous system (CNS) and the identification of a brain-specific isoform, MT-III, suggest that it might have important neurophysiological and neuromodulatory functions. Reinforced by the potential Involvement of MT-III in a number of neurodegenerative disorders, the role of MTs in the CNS has become an intense focus of scientific pursuit. This manuscript represents a survey on the ability of MTs to modulate mercury neurotoxicity, a neurotoxin that has been implied to play an etiologic role in Minamata disease, erethism, and autism, just to name a few.
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Affiliation(s)
- Michael Aschner
- Department of Pediatrics, B-3307 Medical Center North, Vanderbilt University School of Medicine, Nashville, TN 37232-2495, USA.
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49
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Iwata T, Takaoka S, Sakamoto M, Maeda E, Nakamura M, Liu XJ, Murata K. Characteristics of hand tremor and postural sway in patients with fetal-type Minamata disease. J Toxicol Sci 2016; 41:757-763. [PMID: 27853104 DOI: 10.2131/jts.41.757] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
About forty certified patients aged around 50 years old existed as living witnesses to fetal-type Minamata disease (methylmercury poisoning due to in utero exposure) in Minamata, Japan in 2006. Computerized hand tremor and postural sway tests with spectral analysis were conducted for 24 of them and in matched control subjects to examine the pathophysiological feature of neuromotor function. The tremor intensities of the patients with fetal-type Minamata disease were significantly larger than those of the 67 controls at every frequency band for both hands. In the patients, proportions for intensity at 1-6 Hz of both hands were larger, but those of the intensity at 6-10 Hz were smaller compared with the controls. The center frequency of a tremor was significantly lower in the patients than in the controls. Only eight males of the 24 patients were examined to evaluate postural sway because of extremely low scores in activities of daily living in the remaining. Most of the postural sway parameters obtained with eyes open and closed were significantly larger in the patients than in the male controls. Likewise, Romberg quotients of postural sway in anterior-posterior direction were significantly higher in the patients. In conclusion, the patients with fetal-type Minamata disease of our study showed a larger tremor of low frequency at less than 6 Hz and postural instability. Spectral analyses of computerized hand tremor and postural sway are suggested to be useful for assessing the pathophysiological change, related to a lesion of the cerebellum, resulting from prenatal methylmercury exposure.
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Affiliation(s)
- Toyoto Iwata
- Department of Environmental Health Sciences, Akita University Graduate School of Medicine
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50
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Ishihara Y, Tsuji M, Kawamoto T, Yamazaki T. Involvement of reactive oxygen species derived from mitochondria in neuronal injury elicited by methylmercury. J Clin Biochem Nutr 2016; 59:182-190. [PMID: 27895385 PMCID: PMC5110935 DOI: 10.3164/jcbn.16-19] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Accepted: 06/04/2016] [Indexed: 01/02/2023] Open
Abstract
Methylmercury induces oxidative stress and subsequent neuronal injury. However, the mechanism by which methylmercury elicits reactive oxygen species (ROS) production remains under debate. In this study, we investigated the involvement of mitochondrial ROS in methylmercury-induced neuronal cell injury using human neuroblastoma SH-SY5Y-derived ρ0 cells, which have a deletion of mitochondrial DNA and thus decreased respiratory activity. SH-SY5Y cells were cultured for 60 days in the presence of ethidium bromide to produce ρ0 cells. Our ρ0 cells showed decreases in the cytochrome c oxidase expression and activity as well as oxygen consumption compared with original SH-SY5Y cells. Methylmercury at a concentration of 1 µM induced cell death with oxidative stress in original SH-SY5Y cells, but not ρ0 cells, indicating that ρ0 cells are resistant to methylmercury-induced oxidative stress. ρ0 cells also showed tolerance against hydrogen peroxide and superoxide anion, suggesting that ρ0 cells are resistant to total ROS. These data indicate that mitochondrial ROS are clearly involved in oxidative stress and subsequent cell death induced by methylmercury. Considering that the dominant mechanism of ROS generation elicited by methylmercury is due to direct antioxidant enzyme inhibition, mitochondria might play a role in amplifying ROS in methylmercury-induced neurotoxicity.
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Affiliation(s)
- Yasuhiro Ishihara
- Laboratory of Molecular Brain Science, Graduate School of Integrated Arts and Sciences, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima 739-8521, Japan
| | - Mayumi Tsuji
- Department of Environmental Health, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahata-nishi-ku, Kitakyushu, Fukuoka 807-8555, Japan
| | - Toshihiro Kawamoto
- Department of Environmental Health, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahata-nishi-ku, Kitakyushu, Fukuoka 807-8555, Japan
| | - Takeshi Yamazaki
- Laboratory of Molecular Brain Science, Graduate School of Integrated Arts and Sciences, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima 739-8521, Japan
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