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Milea ȘA, Lazăr NN, Simionov IA, Petrea ȘM, Călmuc M, Călmuc V, Georgescu PL, Iticescu C. Effects of cooking methods and co-ingested foods on mercury bioaccessibility in pontic shad ( Alosa immaculata). Curr Res Food Sci 2023; 7:100599. [PMID: 37790855 PMCID: PMC10542595 DOI: 10.1016/j.crfs.2023.100599] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 08/28/2023] [Accepted: 09/18/2023] [Indexed: 10/05/2023] Open
Abstract
Human mercury (Hg) exposure is mostly caused by eating fish. However, there are major differences between the measured and predicted mercury concentration on Hg bioavailability. This study investigated the effects of cooking (steaming, baking, frying, marinating, and smoking) and selected components' co-ingestion on Hg bioaccessibility. Baking and frying reduced Hg bioaccessibility compared to the raw sample. The bioaccessible Hg fraction in fish was assessed through in vitro digestion method. Hg bioaccessibility varied from 4.31 to nearly 24.95% and the Hg recovery rate varied from 63.44 to 78.74%. Co-ingested garlic and broccoli with pontic shad had a positive effect on decreasing fish Hg bioaccessibility. The antioxidant activity of co-ingested food items was also calculated and correlated with mercury bioaccessibility. These results highlighted a possible positive role of plant-based foods and other food processing techniques in the bioaccessibility reduction of other chemical contaminants found in food sources.
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Affiliation(s)
- Ștefania-Adelina Milea
- REXDAN Research Infrastructure, “Dunarea de Jos” University of Galati, George Coșbuc Street, 98, Galati, Romania
| | - Nina-Nicoleta Lazăr
- REXDAN Research Infrastructure, “Dunarea de Jos” University of Galati, George Coșbuc Street, 98, Galati, Romania
| | - Ira-Adeline Simionov
- REXDAN Research Infrastructure, “Dunarea de Jos” University of Galati, George Coșbuc Street, 98, Galati, Romania
- Dunărea de Jos University of Galati, Faculty of Food Science and Engineering, Domnească Street 111, 800201, Galati, Romania
| | - Ștefan-Mihai Petrea
- REXDAN Research Infrastructure, “Dunarea de Jos” University of Galati, George Coșbuc Street, 98, Galati, Romania
- Dunărea de Jos University of Galati, Faculty of Food Science and Engineering, Domnească Street 111, 800201, Galati, Romania
| | - Mădălina Călmuc
- REXDAN Research Infrastructure, “Dunarea de Jos” University of Galati, George Coșbuc Street, 98, Galati, Romania
| | - Valentina Călmuc
- REXDAN Research Infrastructure, “Dunarea de Jos” University of Galati, George Coșbuc Street, 98, Galati, Romania
| | - Puiu-Lucian Georgescu
- REXDAN Research Infrastructure, “Dunarea de Jos” University of Galati, George Coșbuc Street, 98, Galati, Romania
- Department of Chemistry, Physics and Environment, Faculty of Science and Environment, “Dunarea de Jos” University of Galati, Romania, REXDAN Research Infrastructure, Romania
| | - Cătălina Iticescu
- REXDAN Research Infrastructure, “Dunarea de Jos” University of Galati, George Coșbuc Street, 98, Galati, Romania
- Department of Chemistry, Physics and Environment, Faculty of Science and Environment, “Dunarea de Jos” University of Galati, Romania, REXDAN Research Infrastructure, Romania
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Rodríguez-Viso P, Domene A, Sánchez A, Vélez D, Monedero V, Devesa V, Zúñiga M. Challenges and strategies for preventing intestinal damage associated to mercury dietary exposure. Toxicology 2023; 494:153580. [PMID: 37328091 DOI: 10.1016/j.tox.2023.153580] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 06/02/2023] [Accepted: 06/12/2023] [Indexed: 06/18/2023]
Abstract
Food represents the major risk factor for exposure to mercury in most human populations. Therefore, passage through the gastrointestinal tract plays a fundamental role in its entry into the organism. Despite the intense research carried out on the toxicity of Hg, the effects at the intestinal level have received increased attention only recently. In this review we first provide a critical appraisal of the recent advances on the toxic effects of Hg at the intestinal epithelium. Next, dietary strategies aimed to diminish Hg bioavailability or modulate the epithelial and microbiota responses will be revised. Food components and additives, including probiotics, will be considered. Finally, limitations of current approaches to tackle this problem and future lines of research will be discussed.
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Affiliation(s)
| | - Adrián Domene
- Instituto de Agroquímica y Tecnología de Alimentos (IATA-CSIC), Paterna, Spain
| | - Alicia Sánchez
- Instituto de Agroquímica y Tecnología de Alimentos (IATA-CSIC), Paterna, Spain
| | - Dinoraz Vélez
- Instituto de Agroquímica y Tecnología de Alimentos (IATA-CSIC), Paterna, Spain
| | - Vicente Monedero
- Instituto de Agroquímica y Tecnología de Alimentos (IATA-CSIC), Paterna, Spain
| | - Vicenta Devesa
- Instituto de Agroquímica y Tecnología de Alimentos (IATA-CSIC), Paterna, Spain
| | - Manuel Zúñiga
- Instituto de Agroquímica y Tecnología de Alimentos (IATA-CSIC), Paterna, Spain.
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3
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Schmidt S. Navigating a Two-Way Street: Metal Toxicity and the Human Gut Microbiome. ENVIRONMENTAL HEALTH PERSPECTIVES 2022; 130:32001. [PMID: 35302387 PMCID: PMC8932408 DOI: 10.1289/ehp9731] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 09/07/2021] [Indexed: 05/21/2023]
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Bolan S, Seshadri B, Keely S, Kunhikrishnan A, Bruce J, Grainge I, Talley NJ, Naidu R. Bioavailability of arsenic, cadmium, lead and mercury as measured by intestinal permeability. Sci Rep 2021; 11:14675. [PMID: 34282255 PMCID: PMC8289861 DOI: 10.1038/s41598-021-94174-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 06/25/2021] [Indexed: 12/17/2022] Open
Abstract
In this study, the intestinal permeability of metal(loid)s (MLs) such as arsenic (As), cadmium (Cd), lead (Pb) and mercury (Hg) was examined, as influenced by gut microbes and chelating agents using an in vitro gastrointestinal/Caco-2 cell intestinal epithelium model. The results showed that in the presence of gut microbes or chelating agents, there was a significant decrease in the permeability of MLs (As-7.5%, Cd-6.3%, Pb-7.9% and Hg-8.2%) as measured by apparent permeability coefficient value (Papp), with differences in ML retention and complexation amongst the chelants and the gut microbes. The decrease in ML permeability varied amongst the MLs. Chelating agents reduce intestinal absorption of MLs by forming complexes thereby making them less permeable. In the case of gut bacteria, the decrease in the intestinal permeability of MLs may be associated to a direct protection of the intestinal barrier against the MLs or indirect intestinal ML sequestration by the gut bacteria through adsorption on bacterial surface. Thus, both gut microbes and chelating agents can be used to decrease the intestinal permeability of MLs, thereby mitigating their toxicity.
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Affiliation(s)
- Shiv Bolan
- Global Centre for Environmental Remediation, University of Newcastle, Callaghan, NSW, Australia
- Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, University of Newcastle, Callaghan, NSW, Australia
| | - Balaji Seshadri
- Global Centre for Environmental Remediation, University of Newcastle, Callaghan, NSW, Australia
- Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, University of Newcastle, Callaghan, NSW, Australia
| | - Simon Keely
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Anitha Kunhikrishnan
- Global Centre for Environmental Remediation, University of Newcastle, Callaghan, NSW, Australia
| | - Jessica Bruce
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Ian Grainge
- School of Environmental and Life Sciences, University of Newcastle, Callaghan, NSW, Australia
| | - Nicholas J Talley
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Ravi Naidu
- Global Centre for Environmental Remediation, University of Newcastle, Callaghan, NSW, Australia.
- Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, University of Newcastle, Callaghan, NSW, Australia.
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5
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Shi YH, Xiao JJ, Liu YY, Deng YJ, Feng WZ, Wei D, Liao M, Cao HQ. Gut microbiota influence on oral bioaccessibility and intestinal transport of pesticides in Chaenomeles speciosa. Food Chem 2020; 339:127985. [PMID: 32920305 DOI: 10.1016/j.foodchem.2020.127985] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 08/28/2020] [Accepted: 08/31/2020] [Indexed: 12/15/2022]
Abstract
There is limited research focusing on the effects of human gut microbiota on the oral bioaccessibility and intestinal absorption of pesticide residues in food. In the present study, we use a modified setup of the Simulator of the Human Intestinal Microbial Ecosystem for the determination of pesticide residue bioaccessibility in Chaenomeles speciosa, and a Caco-2 cell model of human intestinal absorption. Results showed that gut microbiota played a dual role based their effects on contaminant release and metabolism in the bioaccessibility assay, and Lactobacillus plantarum was one of key bacterial species in the gut microbiota that influenced pesticide stability significantly. The addition of L. plantarum to the system reduced the relative amounts (by 11.40-86.51%) of six pesticides. The interaction between the food matrix and human gut microbiota led to different absorption rates, and the barrier effects increased with an increase in incubation time.
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Affiliation(s)
- Yan-Hong Shi
- School of Resource & Environment, Anhui Agricultural University, Hefei, Anhui Province 230036, China
| | - Jin-Jing Xiao
- School of Plant Protection, Anhui Agricultural University, Hefei, Anhui Province 230036, China; Anhui Province Key Laboratory of Integrated Pest Management on Crops, Hefei, China
| | - Yu-Ying Liu
- School of Resource & Environment, Anhui Agricultural University, Hefei, Anhui Province 230036, China
| | - Ya-Jing Deng
- School of Resource & Environment, Anhui Agricultural University, Hefei, Anhui Province 230036, China
| | - Wen-Zhe Feng
- School of Plant Protection, Anhui Agricultural University, Hefei, Anhui Province 230036, China; Anhui Province Key Laboratory of Integrated Pest Management on Crops, Hefei, China
| | - Dong Wei
- School of Resource & Environment, Anhui Agricultural University, Hefei, Anhui Province 230036, China
| | - Min Liao
- School of Plant Protection, Anhui Agricultural University, Hefei, Anhui Province 230036, China; Anhui Province Key Laboratory of Integrated Pest Management on Crops, Hefei, China
| | - Hai-Qun Cao
- School of Plant Protection, Anhui Agricultural University, Hefei, Anhui Province 230036, China; Anhui Province Key Laboratory of Integrated Pest Management on Crops, Hefei, China.
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6
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Anacleto P, Barbosa V, Alves RN, Maulvault AL, Bronze MR, Marques A. Green tea infusion reduces mercury bioaccessibility and dietary exposure from raw and cooked fish. Food Chem Toxicol 2020; 145:111717. [PMID: 32890690 DOI: 10.1016/j.fct.2020.111717] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 08/26/2020] [Accepted: 08/28/2020] [Indexed: 11/30/2022]
Abstract
Human exposure to mercury (Hg) and methylmercury (MeHg) through the ingestion of seafood raises human health-related concerns. In contrast, green tea has health benefits and its consumption potentially reduces bioaccessibility of dietary Hg. The present study aimed to assess the effect of green tea in total mercury (THg) and MeHg bioaccessibility in raw and cooked marine fish species commonly having high Hg levels. Preliminary results demonstrated that significantly higher reductions of bioaccessible THg were attained after the co-ingestion of green tea infusion (1 cup or more) in the oral and intestinal phases. Overall, the present findings clearly show that the co-ingestion of green tea along with seafood grilling strongly reduces THg and MeHg bioaccessibility in all fish species and consequently diminishes the probability of exceeding MeHg provisional tolerable weekly intakes through the consumption of these species with high Hg levels. Such results point out the need to better understand the beneficial/preventive role of green tea infusions and other food processing techniques in bioaccessibility reduction of other chemical contaminants present in food products. Such information is certainly useful to help consumers to wisely select their food, and to enable food safety authorities to integrate such information in risk assessment.
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Affiliation(s)
- Patrícia Anacleto
- Division of Aquaculture, Upgrading and Bioprospection (DivAV), Portuguese Institute for the Sea and Atmosphere (IPMA, I.P.), Av. Doutor Alfredo Magalhães Ramalho 6, 1495-165, Lisboa, Portugal; MARE - Marine and Environmental Sciences Centre, Guia Marine Laboratory, Faculty of Sciences, University of Lisbon (FCUL), Av. Nossa Senhora do Cabo, 939, 2750-374, Cascais, Portugal; Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos, S/N, 4450-208, Matosinhos, Portugal.
| | - Vera Barbosa
- Division of Aquaculture, Upgrading and Bioprospection (DivAV), Portuguese Institute for the Sea and Atmosphere (IPMA, I.P.), Av. Doutor Alfredo Magalhães Ramalho 6, 1495-165, Lisboa, Portugal; Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos, S/N, 4450-208, Matosinhos, Portugal
| | - Ricardo N Alves
- Division of Aquaculture, Upgrading and Bioprospection (DivAV), Portuguese Institute for the Sea and Atmosphere (IPMA, I.P.), Av. Doutor Alfredo Magalhães Ramalho 6, 1495-165, Lisboa, Portugal; KAUST - King Abdullah University of Science and Technology (KAUST), Red Sea Research Center (RSRC), Thuwal, 23955-6900, Saudi Arabia
| | - Ana Luísa Maulvault
- Division of Aquaculture, Upgrading and Bioprospection (DivAV), Portuguese Institute for the Sea and Atmosphere (IPMA, I.P.), Av. Doutor Alfredo Magalhães Ramalho 6, 1495-165, Lisboa, Portugal; MARE - Marine and Environmental Sciences Centre, Guia Marine Laboratory, Faculty of Sciences, University of Lisbon (FCUL), Av. Nossa Senhora do Cabo, 939, 2750-374, Cascais, Portugal; Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos, S/N, 4450-208, Matosinhos, Portugal
| | - Maria Rosário Bronze
- iBET, Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2780-901, Oeiras, Portugal; Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da República, 2780-157, Oeiras, Portugal; Faculdade de Farmácia da Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisboa, Portugal
| | - António Marques
- Division of Aquaculture, Upgrading and Bioprospection (DivAV), Portuguese Institute for the Sea and Atmosphere (IPMA, I.P.), Av. Doutor Alfredo Magalhães Ramalho 6, 1495-165, Lisboa, Portugal; Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos, S/N, 4450-208, Matosinhos, Portugal
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7
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Dolgova NV, Nehzati S, MacDonald TC, Summers KL, Crawford AM, Krone PH, George GN, Pickering IJ. Disruption of selenium transport and function is a major contributor to mercury toxicity in zebrafish larvae. Metallomics 2020; 11:621-631. [PMID: 30688331 DOI: 10.1039/c8mt00315g] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Mercury is one of the most toxic elements threatening the biosphere, with levels steadily rising due to both natural and human activities. Selenium is an essential micronutrient, required for normal development and functioning of many organisms. While selenium is known to counteract mercury's toxicity under some conditions, to date information about the mercury-selenium relationship is fragmented and often controversial. As part of a systematic study of mercury and selenium interactions, zebrafish (Danio rerio) larvae (a model verterbrate) were exposed to methylmercury chloride or mercuric chloride. The influence of pre- and post-treatment of selenomethionine on the level and distribution of mercury and selenium in the brain and eye sections, as well as on toxicity, were examined. Selenomethionine treatment decreased the amount of maternally transfered mercury in the larval brain. Selenomethionine treatment prior to exposure to mercuric chloride increased both mercury and selenium levels in the brain but decreased their toxic effects. Conversely, methylmercury levels were not changed as a result of selenium pre-treatment, while toxicity was increased. Strikingly, both forms of mercury severely disrupted selenium metabolism, not only by depleting selenium levels due to formation of Hg-Se complexes, but also by blocking selenium transport into and out of tissues, suggesting that restoring normal selenium levels by treating the organism with selenium after mercury exposure may not be possible. Disruption of selenium metabolism by mercury may lead to disruption in function of selenoproteins. Indeed, the production of thyroid hormones by selenoprotein deiodinases was found to be severely impaired as a result of mercury exposure, with selenomethionine not always being a suitable source of selenium to restore thyroid hormone levels.
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Affiliation(s)
- Natalia V Dolgova
- Molecular and Environment Sciences Group, Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, Saskatchewan S7N 5E2, Canada.
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Marmelo I, Barbosa V, Maulvault AL, Duarte MP, Marques A. Does the addition of ingredients affect mercury and cadmium bioaccessibility in seafood-based meals? Food Chem Toxicol 2019; 136:110978. [PMID: 31747620 DOI: 10.1016/j.fct.2019.110978] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 10/31/2019] [Accepted: 11/14/2019] [Indexed: 10/25/2022]
Abstract
Despite the bioaccessibility of nutrients and contaminants present in individual seafood products has been thoroughly studied, information is extremely limited in what concerns complete seafood-based meals, where interactions between ingredients may occur. Hence, this study aimed to evaluate the effect of different ingredients and cooking processes in mercury (Hg) and cadmium (Cd) bioaccessibility in complete meals of tuna (Thunnus spp.) and edible crab (Cancer pagurus), respectively. The addition of ingredients/side dishes decreased Hg levels in cooked tuna meals, but increased Hg bioaccessibility (up to 31% of bioaccessible Hg in complete meals, against 13.5% in stewed tuna alone). Cd levels in edible crab meals were significantly decreased by the addition of ingredients (~36% and ~65% decrease in boiled crab and paté, respectively), but its' bioaccessibility was not significantly affected (>94% in all cases). Results showed that the weekly consumption of 2 complete tuna meals does not exceed MeHg tolerable weekly intake (TWI), whereas Cd's TWI is largely surpassed with the consumption of 50 g/week of edible crab meals. This highlights the importance of determining contaminant levels and bioaccessibility in a whole seafood-based meal context, as such approach enables a more realistic assessment of the risks that seafood can pose to consumers.
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Affiliation(s)
- Isa Marmelo
- Division of Aquaculture and Seafood Upgrading, Portuguese Institute for the Sea and Atmosphere, I.P. (IPMA), Avenida Doutor Alfredo Magalhães Ramalho, 6, 1495-165, Algés, Portugal; MARE - Marine and Environmental Sciences Centre, Laboratório Marítimo da Guia, Faculdade de Ciências da Universidade de Lisboa, Av. Nossa Senhora Do Cabo, 939, 2750-374, Cascais, Portugal.
| | - Vera Barbosa
- Division of Aquaculture and Seafood Upgrading, Portuguese Institute for the Sea and Atmosphere, I.P. (IPMA), Avenida Doutor Alfredo Magalhães Ramalho, 6, 1495-165, Algés, Portugal; Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Universidade Do Porto, Terminal de Cruzeiros Do Porto de Leixões, Avenida General Norton de Matos S/N, 4450-208, Matosinhos, Portugal.
| | - Ana Luísa Maulvault
- MARE - Marine and Environmental Sciences Centre, Laboratório Marítimo da Guia, Faculdade de Ciências da Universidade de Lisboa, Av. Nossa Senhora Do Cabo, 939, 2750-374, Cascais, Portugal; Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Universidade Do Porto, Terminal de Cruzeiros Do Porto de Leixões, Avenida General Norton de Matos S/N, 4450-208, Matosinhos, Portugal; UCIBIO-REQUIMTE, Department of Chemistry, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal.
| | - Maria Paula Duarte
- MEtRICs/DCTB, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal.
| | - António Marques
- Division of Aquaculture and Seafood Upgrading, Portuguese Institute for the Sea and Atmosphere, I.P. (IPMA), Avenida Doutor Alfredo Magalhães Ramalho, 6, 1495-165, Algés, Portugal; Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Universidade Do Porto, Terminal de Cruzeiros Do Porto de Leixões, Avenida General Norton de Matos S/N, 4450-208, Matosinhos, Portugal.
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Speciation of inorganic and organic species of mercury and arsenic in lotus root using high performance liquid chromatography with inductively coupled plasma mass spectrometric detection in one run. Talanta 2019; 199:620-627. [DOI: 10.1016/j.talanta.2019.03.023] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 02/19/2019] [Accepted: 03/02/2019] [Indexed: 12/13/2022]
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Insights on alpha lipoic and dihydrolipoic acids as promising scavengers of oxidative stress and possible chelators in mercury toxicology. J Inorg Biochem 2019; 195:111-119. [DOI: 10.1016/j.jinorgbio.2019.03.019] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 03/19/2019] [Accepted: 03/20/2019] [Indexed: 12/11/2022]
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11
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Li H, Lin X, Zhao J, Cui L, Wang L, Gao Y, Li B, Chen C, Li YF. Intestinal Methylation and Demethylation of Mercury. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2019; 102:597-604. [PMID: 30515547 DOI: 10.1007/s00128-018-2512-4] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 11/30/2018] [Indexed: 05/20/2023]
Abstract
Mercury (Hg) is a global pollutant, which is linked with different diseases. The methylation of Hg and demethylation of methylmercury (MeHg) in the environment were extensively studied and summarized; however, the transformation of Hg in the intestine is less presented. In this review, the research progress and the perspectives on the intestinal transformation of Hg were discussed. Studies found that MeHg could be formed when exposed to inorganic Hg by the gut microbiota in aquatic organisms, terrestrial invertebrates, and mammals, etc. hgcAB genes could be used as indicators for predicting Hg methylation potential. In vitro studies using fecal specimen, intestinal contents, and the isolated intestinal microbes confirmed the intestinal demethylation of MeHg. The investigation on the effects of Hg exposure to the abundance and diversity of intestinal microbes and their metabolites could shed light on the mechanism of the toxicity of Hg, especially the neurotoxicity of MeHg, which deserves further study.
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Affiliation(s)
- Hong Li
- CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, HKU-IHEP Joint Laboratory on Metallomics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaoying Lin
- CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, HKU-IHEP Joint Laboratory on Metallomics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Jiating Zhao
- CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, HKU-IHEP Joint Laboratory on Metallomics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Liwei Cui
- CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, HKU-IHEP Joint Laboratory on Metallomics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Liming Wang
- CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, HKU-IHEP Joint Laboratory on Metallomics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Yuxi Gao
- CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, HKU-IHEP Joint Laboratory on Metallomics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Bai Li
- CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, HKU-IHEP Joint Laboratory on Metallomics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Chunying Chen
- CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing, 100191, China
| | - Yu-Feng Li
- CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, HKU-IHEP Joint Laboratory on Metallomics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China.
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