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Xian J, Ni L, Liu C, Li J, Cao Y, Qin J, Liu D, Wang X. Genome-Scale Screening of Saccharomyces cerevisiae Deletion Mutants to Gain Molecular Insight into Tolerance to Mercury Ions. J Fungi (Basel) 2024; 10:492. [PMID: 39057376 PMCID: PMC11277898 DOI: 10.3390/jof10070492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Revised: 06/19/2024] [Accepted: 06/25/2024] [Indexed: 07/28/2024] Open
Abstract
Mercury (Hg) is a global pollutant and a bioaccumulative toxin that seriously affects the environment. Though increasing information has been obtained on the mechanisms involved in mercury toxicity, there is still a knowledge gap between the adverse effects and action mechanisms, especially at the molecular level. In the current study, we screened a diploid library of Saccharomyces cerevisiae single-gene deletion mutants to identify the nonessential genes associated with increased sensitivity to mercury ions. By genome-scale screening, we identified 64 yeast single-gene deletion mutants. These genes are involved in metabolism, transcription, antioxidant activity, cellular transport, transport facilitation, transport routes, and the cell cycle, as well as in protein synthesis, folding, modification, and protein destination. The concentration of mercury ions was different in the cells of yeast deletion mutants. Moreover, the disruption of antioxidant systems may play a key role in the mercurial toxic effects. The related functions of sensitive genes and signal pathways were further analyzed using bioinformatics-related technologies. Among 64 sensitive genes, 37 genes have human homologous analogs. Our results may provide a meaningful reference for understanding the action mode, cellular detoxification, and molecular regulation mechanisms of mercury toxicity.
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Affiliation(s)
| | | | | | | | | | | | | | - Xue Wang
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo 255049, China; (J.X.); (L.N.); (C.L.); (J.L.); (Y.C.); (J.Q.); (D.L.)
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2
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Tu IC, Yuan CS, Tseng YL, Lee CW, Lin C. Spatiotemporal variation and inter-transport of atmospheric speciated mercury between Kaohsiung Harbor and neighboring urban areas. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 342:123039. [PMID: 38040182 DOI: 10.1016/j.envpol.2023.123039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 11/13/2023] [Accepted: 11/23/2023] [Indexed: 12/03/2023]
Abstract
This study investigated the spatiotemporal variation, gas-particle partition, and source resolution of atmospheric speciation mercury (ASM) in Kaohsiung Harbor and neighboring Metro Kaohsiung. Four sampling sites were selected to determine the pollution characteristics and inter-transport of ASM between the port and urban areas. The yearly average GEM, GOM, and PBM concentrations were 7.13 ± 2.2 ng/m3, 331 ± 190 pg/m3, and 532 ± 301 pg/m3, respectively. Notably, GEM emerged as the predominant ASM species (85-94%), primarily originating from anthropogenic emissions from the harbor area and nearby industrial complex. The study revealed a distinct seasonal variation in ASM concentrations in the Kaohsiung Area in the following order: winter > fall > spring > summer. Concerning spatial distribution, ASM concentrations in the port areas were generally higher than those in the urban areas. This disparity was chiefly attributed to the influence of the prevailing winds, local sources, and atmospheric dispersion. Backward trajectory simulation revealed that polluted air masses blown from the northeast in winter and spring, moving along the western in-land part of Taiwan Island, were likely influenced by local sources and long-range transport (LRT). In summer, air pollutants originating from the south were likely transported from the coastal industrial sources. During fall, air masses blown from the western offshore waters transported air pollutants from Kaohsiung Harbor to neighboring Metro Kaohsiung. The results obtained from principle component analysis (PCA) indicated that primary sources in the port areas included ship emissions, vehicular exhausts, and nearby industrial complex, which align with the primary source factors identified by positive matrix factorization (PMF), which were mobile sources and coal-fired industrial boilers. Meanwhile, mobile sources and sulfur-containing fuel/waste combustion were identified as the primary sources in the urban areas.
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Affiliation(s)
- I-Chieh Tu
- Institute of Environmental Engineering, National Sun Yat-Sen University, No. 70, Lian-Hai Road, Kaohsiung, 80424, Taiwan
| | - Chung-Shin Yuan
- Institute of Environmental Engineering, National Sun Yat-Sen University, No. 70, Lian-Hai Road, Kaohsiung, 80424, Taiwan.
| | - Yu-Lun Tseng
- Institute of Environmental Engineering, National Sun Yat-Sen University, No. 70, Lian-Hai Road, Kaohsiung, 80424, Taiwan
| | - Chia-Wei Lee
- Department of Safety, Health and Environmental Engineering, National Kaohsiung University of Science and Technology, No. 1, University Road, Kaohsiung, 81148, Taiwan
| | - Chitsan Lin
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, No. 142, Haijhuan Road, Kaohsiung, 81157, Taiwan
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3
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Singh AD, Khanna K, Kour J, Dhiman S, Bhardwaj T, Devi K, Sharma N, Kumar P, Kapoor N, Sharma P, Arora P, Sharma A, Bhardwaj R. Critical review on biogeochemical dynamics of mercury (Hg) and its abatement strategies. CHEMOSPHERE 2023; 319:137917. [PMID: 36706814 DOI: 10.1016/j.chemosphere.2023.137917] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 12/21/2022] [Accepted: 01/18/2023] [Indexed: 06/18/2023]
Abstract
Mercury (Hg) is among the naturally occurring heavy metal with elemental, organic, and inorganic distributions in the environment. Being considered a global pollutant, high pools of Hg-emissions ranging from >6000 to 8000 Mg Hg/year get accumulated by the natural and anthropogenic activities in the atmosphere. These toxicants have high persistence, toxicity, and widespread contamination in the soil, water, and air resources. Hg accumulation inside the plant parts amplifies the traces of toxic elements in the linking food chains, leads to Hg exposure to humans, and acts as a potential genotoxic, neurotoxic and carcinogenic entity. However, excessive Hg levels are equally toxic to the plant system and severely disrupt the physiological and metabolic processes in plants. Thus, a plausible link between Hg-concentration and its biogeochemical behavior is highly imperative to analyze the plant-soil interactions. Therefore, it is requisite to bring these toxic contaminants in between the acceptable limits to safeguard the environment. Plants efficiently incorporate or absorb the bioavailable Hg from the soil thus a constructive understanding of Hg uptake, translocation/sequestration involving specific heavy metal transporters, and detoxification mechanisms are drawn. Whereas recent investigations in biological remediation of Hg provide insights into the potential associations between the plants and microbes. Furthermore, intense research on Hg-induced antioxidants, protein networks, metabolic mechanisms, and signaling pathways is required to understand these bioremediations techniques. This review sheds light on the mercury (Hg) sources, pollution, biogeochemical cycles, its uptake, translocation, and detoxification methods with respect to its molecular approaches in plants.
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Affiliation(s)
- Arun Dev Singh
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, India.
| | - Kanika Khanna
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, India
| | - Jaspreet Kour
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, India
| | - Shalini Dhiman
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, India
| | - Tamanna Bhardwaj
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, India
| | - Kamini Devi
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, India
| | - Neerja Sharma
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, India
| | - Pardeep Kumar
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, India
| | - Nitika Kapoor
- P.G. Department of Botany, Hans Raj Mahila Maha Vidyalaya, Jalandhar, Punjab, India
| | - Priyanka Sharma
- School of Bioengineering Sciences and Research, MIT-ADT University, Pune, Maharashtra, India
| | - Priya Arora
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, India
| | - Anket Sharma
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, China
| | - Renu Bhardwaj
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, India.
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Shen Y, Nie C, Wei Y, Zheng Z, Xu ZL, Xiang P. FRET-based innovative assays for precise detection of the residual heavy metals in food and agriculture-related matrices. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214676] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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5
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Bâlon P, Boissard G, Cailleau C, Belbeze S, Hubé D, Vincq C, Brunet JF, Lion F, Zornig C, Coftier A, Ollivier P. Relating mercury occurrence in soil gases at establishments hosting children to historical mercury-using activities in Paris, France. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 814:152388. [PMID: 34915003 DOI: 10.1016/j.scitotenv.2021.152388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 12/03/2021] [Accepted: 12/10/2021] [Indexed: 06/14/2023]
Abstract
Volatile pollutants from former industrial sites can degrade the buildings' indoor air quality that were built after the industrial activities. Since 2010, environmental assessments have been conducted in French establishments hosting sensitive populations identified as being on or near potentially contaminated former industrial sites. These projects are based on historical studies traditionally carried out as part of managing contaminated sites, to determine which substances should be analyzed. They pinpoint former activities likely to have stored or used pollutants. We show that the historical information collected is not effective in targeting sites with increased probability of mercury being present in soil gases. Environmental history has demonstrated the existence of large-scale artisanal contamination, both prior to and concomitant with the industrial era. Classic historical studies would not take into account artisanal activities, which are less documented than industrial activities. We carried out additional research for three schools located in three different Parisian districts. Although information on activities which could have emitted mercury was relatively imprecise (in terms of location, type and duration of activities) and uncertainties exist about the completeness of the archival documents available, our investigations identified several mercury-using activities that had not been identified during the classic historical study. However, we have shown that the number of activities identified does not provide information on how mercury has affected soil gas. Consequently, although a more extensive historical research improves knowledge about the presence of potential mercury-using activities, our study shows that a systematic analysis of mercury as part of the assessment of establishments hosting sensitive populations remains relevant. This approach should be applied to other cities around the world.
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Affiliation(s)
- Pauline Bâlon
- Bureau de Recherches Géologiques et Minières (BRGM - French Geological Survey), 3 avenue Claude Guillemin, BP 36009 - 45060 Orléans Cedex 2, France.
| | - Geoffrey Boissard
- Bureau de Recherches Géologiques et Minières (BRGM - French Geological Survey), 3 avenue Claude Guillemin, BP 36009 - 45060 Orléans Cedex 2, France
| | - Claire Cailleau
- Bureau de Recherches Géologiques et Minières (BRGM - French Geological Survey), 3 avenue Claude Guillemin, BP 36009 - 45060 Orléans Cedex 2, France
| | - Stéphane Belbeze
- Bureau de Recherches Géologiques et Minières (BRGM - French Geological Survey), 3 avenue Claude Guillemin, BP 36009 - 45060 Orléans Cedex 2, France
| | - Daniel Hubé
- Bureau de Recherches Géologiques et Minières (BRGM - French Geological Survey), 3 avenue Claude Guillemin, BP 36009 - 45060 Orléans Cedex 2, France
| | - Christian Vincq
- Ministère de la Transition Ecologique (MTE - French Ministry for the Ecological Transition), Tour Sequoia, 92055 La Défense CEDEX, France
| | - Jean-François Brunet
- Bureau de Recherches Géologiques et Minières (BRGM - French Geological Survey), 3 avenue Claude Guillemin, BP 36009 - 45060 Orléans Cedex 2, France
| | - Fabien Lion
- Bureau de Recherches Géologiques et Minières (BRGM - French Geological Survey), 3 avenue Claude Guillemin, BP 36009 - 45060 Orléans Cedex 2, France
| | - Clément Zornig
- Bureau de Recherches Géologiques et Minières (BRGM - French Geological Survey), 3 avenue Claude Guillemin, BP 36009 - 45060 Orléans Cedex 2, France
| | - Aline Coftier
- Bureau de Recherches Géologiques et Minières (BRGM - French Geological Survey), 3 avenue Claude Guillemin, BP 36009 - 45060 Orléans Cedex 2, France
| | - Patrick Ollivier
- Bureau de Recherches Géologiques et Minières (BRGM - French Geological Survey), 3 avenue Claude Guillemin, BP 36009 - 45060 Orléans Cedex 2, France
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Yawei S, Jianhai L, Junxiu Z, Xiaobo P, Zewu Q. Epidemiology, clinical presentation, treatment, and follow-up of chronic mercury poisoning in China: a retrospective analysis. BMC Pharmacol Toxicol 2021; 22:25. [PMID: 33941274 PMCID: PMC8091676 DOI: 10.1186/s40360-021-00493-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Accepted: 04/20/2021] [Indexed: 01/04/2023] Open
Abstract
Background There are no reports on the incidence of chronic mercury poisoning in a large population in China. This study investigated the epidemiology, clinical manifestations, treatment, and follow-up of Chinese patients with chronic mercury poisoning. Methods Data for 288 mercury poisoning patients were collected at our hospital from July 2014 to September 2019, including sex, age, admission time, blood mercury content, urine mercury content, creatinine, urinary mercury/creatinine ratio, 24-h urinary protein levels, electromyography (EMG) findings, renal biopsy, and follow-up. Patient characteristics were evaluated by statistical and correlation analyses. Results First, mercury poisoning in China mainly occurred through occupational exposure and the inappropriate use of mercury-containing cosmetics and Chinese folk remedies (CFRs). Second, the most common symptoms were nervous system (50.3 %), kidney (16.4 %) and breathing (8.0 %). Mercury poisoning-induced Nephrotic syndrome (NS) and peripheral neuropathy are common long-term complications. The complications of occupational and cosmetics-induced mercury poisoning are consistent with international belief. However, the NS caused by CFRs is mainly membranous nephropathy and the probability of peripheral neuropathy caused by CFRs is higher than other pathogens. Third, follow-up data shows that 13 patients with EMG-confirmed neurological injury, 10 showed full recovery after 38.50 ± 8.03 months. Furthermore, among 18 patients with NS, 15 had normal urine protein and serum albumin levels after 22.67 ± 10.26 months. Conclusions Regulation of skin-lightening cosmetic products, safety surveillance of CFRs, and prevention and control of occupational exposure must be improved to decrease the incidence of mercury poisoning in China.
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Affiliation(s)
- Sun Yawei
- Department of Chemical Poisoning Treatment, Department of Hematology, Fifth Medical Center of Chinese PLA General Hospital, No. 8 Dong da Street, Fengtai District, 100071, Beijing, China
| | - Long Jianhai
- Pulmonary and Critical Care Medicine, Beijing Tiantan Hospital, Capital Medical University, 100050, Beijing, China
| | - Zhao Junxiu
- Department of Chemical Poisoning Treatment, Department of Hematology, Fifth Medical Center of Chinese PLA General Hospital, No. 8 Dong da Street, Fengtai District, 100071, Beijing, China
| | - Peng Xiaobo
- Department of Chemical Poisoning Treatment, Department of Hematology, Fifth Medical Center of Chinese PLA General Hospital, No. 8 Dong da Street, Fengtai District, 100071, Beijing, China.
| | - Qiu Zewu
- Department of Chemical Poisoning Treatment, Department of Hematology, Fifth Medical Center of Chinese PLA General Hospital, No. 8 Dong da Street, Fengtai District, 100071, Beijing, China.
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7
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Personalized Prevention in Mercury-Induced Amyotrophic Lateral Sclerosis: A Case Report. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10217839] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Chronic exposure to low levels of mercury is involved in the development of motor neuron diseases (MND). Genetic alterations may have a crucial role in the onset and progression. We presented a case of a TANK-binding kinase 1 (TBK1)-mutated 54-year-old male worker who developed a MND due to chronic mercury exposure at work. He was employed in a chlor-alkali plant in Central Italy. After two years of employment he had acute mercury intoxication with suggestive neurological symptoms and a high urinary level of the metal. Through years, many episodes of intoxication occurred, but he continued to perform the same job and be exposed to mercury. After yet another episode of intoxication in 2013, he showed fasciculations of the upper limbs and trunk, and electromyographic activity patterns were consistent with amyotrophic lateral sclerosis (ALS). In 2016, a genetic test revealed a mutation of TBK1, an ALS-related gene. This case highlights the important role of genetics in personalized occupational medicine. Occupational physicians should use genetic tests to identify conditions of individual susceptibility in workers with documented frequent episodes of mercury intoxication recorded during health surveillance programs to customize prevention measures in the workplace and act before damage appears.
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8
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How Occupational Mercury Neurotoxicity Is Affected by Genetic Factors. A Systematic Review. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10217706] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Occupational exposure to elemental mercury still represents a significant risk in the workplace. The sensitivity of the exposed subjects varies considerably. This study aims to summarize the literature on the role of genetic factors in occupationally exposed cohorts. A systematic search of the literature was carried out on PubMed Central (PMC), MEDLINE, and Google Scholar databases in accordance with the “Preferred Reporting Items for Systematic reviews and Meta-Analyses” (PRISMA) guidelines, from 1946 to July 2020. Ten cross-sectional studies were included in the review. All studies referred to the polymorphisms that can favour some neurotoxic effects of the metal in occupational cohorts. Some genetic variants may be associated with an increase in the occupational effects of mercury. Given the limited evidence, genetic screening of all mercury-exposed workers is not recommended. However, a personalized search for polymorphisms could be taken into consideration if exposed workers report early neurotoxic symptoms.
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Chalkidis A, Jampaiah D, Hartley PG, Sabri YM, Bhargava SK. Mercury in natural gas streams: A review of materials and processes for abatement and remediation. JOURNAL OF HAZARDOUS MATERIALS 2020; 382:121036. [PMID: 31473516 DOI: 10.1016/j.jhazmat.2019.121036] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Revised: 08/01/2019] [Accepted: 08/17/2019] [Indexed: 06/10/2023]
Abstract
The role of natural gas in mitigating greenhouse gas emissions and advancing renewable energy resource integration is undoubtedly critical. With the progress of hydrocarbons exploration and production, the target zones become deeper and the possibility of mercury contamination increases. This impacts on the industry from health and safety risks, due to corrosion and contamination of equipment, to catalyst poisoning and toxicity through emissions to the environment. Especially mercury embrittlement, being a significant problem in LNG plants using aluminum cryogenic heat exchangers, has led to catastrophic plant incidents worldwide. The aim of this review is to critically discuss the conventional and alternative materials as well as the processes employed for mercury removal during gas processing. Moreover, comments on studies examining the geological occurrence of mercury species are included, the latest developments regarding the detection, sampling and measurement are presented and updated information with respect to mercury speciation and solubility is displayed. Clean up and passivation techniques as well as disposal methods for mercury-containing waste are also explained. Most importantly, the environmental as well as the health and safety implications are addressed, and areas that require further research are pinpointed.
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Affiliation(s)
- Anastasios Chalkidis
- Centre for Advanced Materials & Industrial Chemistry (CAMIC), School of Science, RMIT University, GPO Box 2476, Melbourne, VIC, 3001, Australia; CSIRO Energy, Private Bag 10, Clayton South, VIC, 3169, Australia
| | - Deshetti Jampaiah
- Centre for Advanced Materials & Industrial Chemistry (CAMIC), School of Science, RMIT University, GPO Box 2476, Melbourne, VIC, 3001, Australia
| | - Patrick G Hartley
- Centre for Advanced Materials & Industrial Chemistry (CAMIC), School of Science, RMIT University, GPO Box 2476, Melbourne, VIC, 3001, Australia; CSIRO Energy, Private Bag 10, Clayton South, VIC, 3169, Australia
| | - Ylias M Sabri
- Centre for Advanced Materials & Industrial Chemistry (CAMIC), School of Science, RMIT University, GPO Box 2476, Melbourne, VIC, 3001, Australia.
| | - Suresh K Bhargava
- Centre for Advanced Materials & Industrial Chemistry (CAMIC), School of Science, RMIT University, GPO Box 2476, Melbourne, VIC, 3001, Australia.
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Sengan M, Veerappan A. N-myristoyltaurine capped copper nanoparticles for selective colorimetric detection of Hg2+ in wastewater and as effective chemocatalyst for organic dye degradation. Microchem J 2019. [DOI: 10.1016/j.microc.2019.04.049] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Carranza-Torres IE, Viveros-Valdez E, Guzmán-Delgado NE, García-Davis S, Morán-Martínez J, Betancourt-Martínez ND, Balderas-Rentería I, Carranza-Rosales P. Protective effects of phenolic acids on mercury-induced DNA damage in precision-cut kidney slices. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2019; 22:367-375. [PMID: 31168340 PMCID: PMC6535197 DOI: 10.22038/ijbms.2019.30056.7242] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Objective(s): Precision-cut tissue slices are considered an organotypic 3D model widely used in biomedical research. The comet assay is an important screening test for early genotoxicity risk assessment that is mainly applied on in vitro models. The aim of the present study was to provide a 3D organ system for determination of genotoxicity using a modified method of the comet assay since the stromal components from the original tissue make this technique complicated. Materials and Methods: A modified comet assay technique was validated using precision-cut hamster kidney slices to analyze the antigenotoxic effect of the phenolic compounds caffeic acid, chlorogenic acid, and rosmarinic acid in tissue slices incubated with 15 µM HgCl2. Cytotoxicity of the phenolic compounds was studied in Vero cells, and by morphologic analysis in tissue slices co-incubated with HgCl2 and phenolic compounds. Results: A modification of the comet assay allows obtaining better and clear comet profiles for analysis. Non-cytotoxic concentrations of phenolic acids protected kidney tissue slices against mercury-induced DNA damage, and at the same time, were not nephrotoxic. The highest protection was provided by 3 µg/ml caffeic acid, although 6 µg/ml rosmarinic and 9 µg/ml chlorogenic acids also exhibited protective effects. Conclusion: This is the first time that a modification of the comet assay technique is reported as a tool to visualize the comets from kidney tissue slices in a clear and simple way. The phenolic compounds tested in this study provided protection against mercury-induced genotoxic damage in precision-cut kidney slices.
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Affiliation(s)
- Irma Edith Carranza-Torres
- Departamento de Biología Celular y Ultraestructura, Centro de Investigación Biomédica, Facultad de Medicina, Universidad Autónoma de Coahuila. Torreón, Coah. México.,Departamento de Biología Celular y Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, NL. México
| | - Ezequiel Viveros-Valdez
- Departamento de Química Analítica, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, NL. México
| | - Nancy Elena Guzmán-Delgado
- División de Investigación, Unidad Médica de Alta Especialidad # 34, Instituto Mexicano del Seguro Social, Monterrey, NL. México
| | - Sara García-Davis
- Departamento de Química Analítica, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, NL. México
| | - Javier Morán-Martínez
- Departamento de Biología Celular y Ultraestructura, Centro de Investigación Biomédica, Facultad de Medicina, Universidad Autónoma de Coahuila. Torreón, Coah. México
| | - Nadia Denys Betancourt-Martínez
- Departamento de Biología Celular y Ultraestructura, Centro de Investigación Biomédica, Facultad de Medicina, Universidad Autónoma de Coahuila. Torreón, Coah. México
| | - Isaías Balderas-Rentería
- Laboratorio de Ingeniería Genética y Genómica, Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, NL. México
| | - Pilar Carranza-Rosales
- Departamento de Biología Celular y Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, NL. México
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12
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Exposure routes and health effects of heavy metals on children. Biometals 2019; 32:563-573. [DOI: 10.1007/s10534-019-00193-5] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Accepted: 03/22/2019] [Indexed: 02/07/2023]
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13
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Insights into the Potential Role of Mercury in Alzheimer's Disease. J Mol Neurosci 2019; 67:511-533. [PMID: 30877448 DOI: 10.1007/s12031-019-01274-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 01/30/2019] [Indexed: 12/18/2022]
Abstract
Mercury (Hg), which is a non-essential element, is considered a highly toxic pollutant for biological systems even when present at trace levels. Elevated Hg exposure with the growing release of atmospheric pollutant Hg and rising accumulations of mono-methylmercury (highly neurotoxic) in seafood products have increased its toxic potential for humans. This review aims to highlight the potential relationship between Hg exposure and Alzheimer's disease (AD), based on the existing literature in the field. Recent reports have hypothesized that Hg exposure could increase the potential risk of developing AD. Also, AD is known as a complex neurological disorder with increased amounts of both extracellular neuritic plaques and intracellular neurofibrillary tangles, which may also be related to lifestyle and genetic variables. Research reports on AD and relationships between Hg and AD indicate that neurotransmitters such as serotonin, acetylcholine, dopamine, norepinephrine, and glutamate are dysregulated in patients with AD. Many researchers have suggested that AD patients should be evaluated for Hg exposure and toxicity. Some authors suggest further exploration of the Hg concentrations in AD patients. Dysfunctional signaling pathways in AD and Hg exposure appear to be interlinked with some driving factors such as arachidonic acid, homocysteine, dehydroepiandrosterone (DHEA) sulfate, hydrogen peroxide, glucosamine glycans, glutathione, acetyl-L carnitine, melatonin, and HDL. This evidence suggests the need for a better understanding of the relationship between AD and Hg exposure, and potential mechanisms underlying the effects of Hg exposure on regional brain functions. Also, further studies evaluating brain functions are needed to explore the long-term effects of subclinical and untreated Hg toxicity on the brain function of AD patients.
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Jampaiah D, Chalkidis A, Sabri YM, Bhargava SK. Role of Ceria in the Design of Composite Materials for Elemental Mercury Removal. CHEM REC 2018; 19:1407-1419. [DOI: 10.1002/tcr.201800161] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 11/19/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Deshetti Jampaiah
- Centre for Advanced Materials and Industrial Chemistry (CAMIC)School of Science, RMIT University GPO BOX 2476 Melbourne VIC 3001 Australia
| | - Anastasios Chalkidis
- Centre for Advanced Materials and Industrial Chemistry (CAMIC)School of Science, RMIT University GPO BOX 2476 Melbourne VIC 3001 Australia
| | - Ylias M. Sabri
- Centre for Advanced Materials and Industrial Chemistry (CAMIC)School of Science, RMIT University GPO BOX 2476 Melbourne VIC 3001 Australia
| | - Suresh K. Bhargava
- Centre for Advanced Materials and Industrial Chemistry (CAMIC)School of Science, RMIT University GPO BOX 2476 Melbourne VIC 3001 Australia
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Denmark IS, Begu E, Arslan Z, Han FX, Seiter-Moser JM, Pierce EM. Removal of inorganic mercury by selective extraction and coprecipitation for determination of methylmercury in mercury-contaminated soils by chemical vapor generation inductively coupled plasma mass spectrometry (CVG-ICP-MS). Anal Chim Acta 2018; 1041:68-77. [PMID: 30340692 DOI: 10.1016/j.aca.2018.08.049] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 08/15/2018] [Accepted: 08/25/2018] [Indexed: 12/19/2022]
Abstract
A procedure is developed for selective extraction of methylmercury (CH3Hg+) from heavily Hg-contaminated soils and sediments for determination by chemical vapor generation inductively coupled plasma mass spectrometry (CVG-ICP-MS). Soils artificially contaminated with 40 μg g-1 inorganic mercury (Hg2+) or methylmercury chloride (CH3HgCl) were agitated by shaking or exposing to ultrasounds in dilute hydrochloric acid (HCl) or nitric acid (HNO3) solutions at room temperature. Extractions in HCl (5 or 10% v/v) resulted in substantial leaching of Hg2+ from soils, whereas 5% (v/v) HNO3 provided selectivity for quantitative extraction of CH3Hg+ with minimum Hg2+ leaching. Agitation with ultrasounds in 5% (v/v) HNO3 for about 3 min was sufficient for extraction of all CH3Hg+ from soils. Coprecipitations with Fe(OH)3, Bi(OH)3 and HgS were investigated for removal of residual Hg2+ in soil extracts. Hydroxide precipitations were not effective. Thiourea or l-cysteine added to soil extracts prior to hydroxide precipitation improved precipitation of Hg2+, but also resulted in removal of CH3Hg+. HgS precipitation was made with dilute ammonium sulfide solution, (NH4)2S. Adding 30 μL of 0.35 mol L-1 (NH4)2S to soil extracts in 5% (v/v) HNO3 resulted in removal of all residual Hg2+ without impacting CH3Hg+ levels. Vapor generation was carried out by reacting Hg2+-free soil extracts with 1% (m/v) NaBH4. No significant interferences were observed from (NH4)2S on the vapor generation from CH3Hg+. The slopes of the calibration curves for CH3HgCl standard solutions in 5% (v/v) HNO3 with and without (NH4)2S were similar. Limits of detection (LOD, 3s method) were around 0.08 μg L-1 for 5% (v/v) HNO3 blanks (n = 10) and 0.10 μg L-1 for 5% (v/v) HNO3 + 0.005 mol L-1 (NH4)2S blanks (n = 10). Percent relative standard deviation (%RSD) for five replicate measurements varied between 3.1% and 6.4% at 1.0 CH3HgCl level. The method is validated by analysis of two certified reference materials (CRM); purely Methylmercury sediment (SQC1238, 10.00 ± 0.291 ng g-1 CH3Hg+) and Hg-contaminated Estuarine sediment (ERM - CC580, 75 ± 4 ng g-1 CH3Hg+ and 132 ± 3 μg g-1 total Hg). CH3Hg+ values for SQC1238 were between 13.0 and 13.2 ng g-1, and 79 and 81 ng g-1 for ERM - CC580. Hg-contaminated soils (57-96 μg g-1 total Hg) collected from the floodplains of Oak Ridge, TN were analyzed for CH3Hg+ using the procedure by CVG-ICPMS. CH3Hg+ levels ranged from 30 to 51 ng g-1 and did not correlate with total Hg levels (R2 = 0.01).
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Affiliation(s)
- Iris S Denmark
- Jackson State University, Department of Chemistry, Physics and Atmospheric Sciences, Jackson, MS, 39217, USA
| | - Ermira Begu
- Jackson State University, Department of Chemistry, Physics and Atmospheric Sciences, Jackson, MS, 39217, USA
| | - Zikri Arslan
- Jackson State University, Department of Chemistry, Physics and Atmospheric Sciences, Jackson, MS, 39217, USA.
| | - Fengxiang X Han
- Jackson State University, Department of Chemistry, Physics and Atmospheric Sciences, Jackson, MS, 39217, USA
| | - Jennifer M Seiter-Moser
- Environmental Laboratory, Engineer Research and Development Center (ERDC), Vicksburg, MS, 39180, USA
| | - Eric M Pierce
- Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
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