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Petitjean K, Verres Y, Bristeau S, Ribault C, Aninat C, Olivier C, Leroyer P, Ropert M, Loréal O, Herault O, Amalric L, Baran N, Fromenty B, Corlu A, Loyer P. Low concentrations of ethylene bisdithiocarbamate pesticides maneb and mancozeb impair manganese and zinc homeostasis to induce oxidative stress and caspase-dependent apoptosis in human hepatocytes. CHEMOSPHERE 2024; 346:140535. [PMID: 37923018 DOI: 10.1016/j.chemosphere.2023.140535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 10/02/2023] [Accepted: 10/23/2023] [Indexed: 11/07/2023]
Abstract
The worldwide and intensive use of phytosanitary compounds results in environmental and food contamination by chemical residues. Human exposure to multiple pesticide residues is a major health issue. Considering that the liver is not only the main organ for metabolizing pesticides but also a major target of toxicities induced by xenobiotics, we studied the effects of a mixture of 7 pesticides (chlorpyrifos-ethyl, dimethoate, diazinon, iprodione, imazalil, maneb, mancozeb) often detected in food samples. Effects of the mixture was investigated using metabolically competent HepaRG cells and human hepatocytes in primary culture. We report the strong cytotoxicity of the pesticide mixture towards hepatocytes-like HepaRG cells and human hepatocytes upon acute and chronic exposures at low concentrations extrapolated from the Acceptable Daily Intake (ADI) of each compound. Unexpectedly, we demonstrated that the manganese (Mn)-containing dithiocarbamates (DTCs) maneb and mancozeb were solely responsible for the cytotoxicity induced by the mixture. The mechanism of cell death involved the induction of oxidative stress, which led to cell death by intrinsic apoptosis involving caspases 3 and 9. Importantly, this cytotoxic effect was found only in cells metabolizing these pesticides. Herein, we unveil a novel mechanism of toxicity of the Mn-containing DTCs maneb and mancozeb through their metabolization in hepatocytes generating the main metabolite ethylene thiourea (ETU) and the release of Mn leading to intracellular Mn overload and depletion in zinc (Zn). Alteration of the Mn and Zn homeostasis provokes the oxidative stress and the induction of apoptosis, which can be prevented by Zn supplementation. Our data demonstrate the hepatotoxicity of Mn-containing fungicides at very low doses and unveil their adverse effect in disrupting Mn and Zn homeostasis and triggering oxidative stress in human hepatocytes.
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Affiliation(s)
- Kilian Petitjean
- Inserm, INRAE, Univ Rennes, Institut NUMECAN (Nutrition Métabolismes et Cancer) UMR-A 1341, UMR-S 1317, F-35000 Rennes, France
| | - Yann Verres
- Inserm, INRAE, Univ Rennes, Institut NUMECAN (Nutrition Métabolismes et Cancer) UMR-A 1341, UMR-S 1317, F-35000 Rennes, France
| | - Sébastien Bristeau
- BRGM, Direction Eau, Environnement, Procédés et Analyses (DEPA), 3 Avenue Claude-Guillemin - BP 36009, 45060 Orléans Cedex 2, France
| | - Catherine Ribault
- Inserm, INRAE, Univ Rennes, Institut NUMECAN (Nutrition Métabolismes et Cancer) UMR-A 1341, UMR-S 1317, F-35000 Rennes, France
| | - Caroline Aninat
- Inserm, INRAE, Univ Rennes, Institut NUMECAN (Nutrition Métabolismes et Cancer) UMR-A 1341, UMR-S 1317, F-35000 Rennes, France
| | - Christophe Olivier
- Cancéropole Grand Ouest (CGO), NET "Niches and Epigenetics of Tumors" Network, 44000 Nantes, France; INSERM UMR 1232 CRCINA, 44000 Nantes-Angers, France; Faculty of Pharmaceutical and Biological Sciences, Nantes University, 44000 Nantes, France
| | - Patricia Leroyer
- Inserm, INRAE, Univ Rennes, Institut NUMECAN (Nutrition Métabolismes et Cancer) UMR-A 1341, UMR-S 1317, F-35000 Rennes, France
| | - Martine Ropert
- Inserm, INRAE, Univ Rennes, Institut NUMECAN (Nutrition Métabolismes et Cancer) UMR-A 1341, UMR-S 1317, F-35000 Rennes, France; AEM2 Platform, CHU Pontchaillou, 2 Rue Henri le Guilloux, 35033 Rennes, France
| | - Olivier Loréal
- Inserm, INRAE, Univ Rennes, Institut NUMECAN (Nutrition Métabolismes et Cancer) UMR-A 1341, UMR-S 1317, F-35000 Rennes, France
| | - Olivier Herault
- Cancéropole Grand Ouest (CGO), NET "Niches and Epigenetics of Tumors" Network, 44000 Nantes, France; Department of Biological Hematology, Tours University Hospital, 37000 Tours, France; CNRS ERL 7001 LNOx, EA 7501, Tours University, 37000 Tours, France; CNRS GDR3697 Micronit "Microenvironment of Tumor Niches", Tours, France
| | - Laurence Amalric
- BRGM, Direction Eau, Environnement, Procédés et Analyses (DEPA), 3 Avenue Claude-Guillemin - BP 36009, 45060 Orléans Cedex 2, France
| | - Nicole Baran
- BRGM, Direction Eau, Environnement, Procédés et Analyses (DEPA), 3 Avenue Claude-Guillemin - BP 36009, 45060 Orléans Cedex 2, France
| | - Bernard Fromenty
- Inserm, INRAE, Univ Rennes, Institut NUMECAN (Nutrition Métabolismes et Cancer) UMR-A 1341, UMR-S 1317, F-35000 Rennes, France
| | - Anne Corlu
- Inserm, INRAE, Univ Rennes, Institut NUMECAN (Nutrition Métabolismes et Cancer) UMR-A 1341, UMR-S 1317, F-35000 Rennes, France; Cancéropole Grand Ouest (CGO), NET "Niches and Epigenetics of Tumors" Network, 44000 Nantes, France.
| | - Pascal Loyer
- Inserm, INRAE, Univ Rennes, Institut NUMECAN (Nutrition Métabolismes et Cancer) UMR-A 1341, UMR-S 1317, F-35000 Rennes, France; Cancéropole Grand Ouest (CGO), NET "Niches and Epigenetics of Tumors" Network, 44000 Nantes, France.
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Markiv B, Ruiz-Azcona L, Expósito A, Santibáñez M, Fernández-Olmo I. Short- and long-term exposure to trace metal(loid)s from the production of ferromanganese alloys by personal sampling and biomarkers. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2022; 44:4595-4618. [PMID: 35190915 PMCID: PMC8860625 DOI: 10.1007/s10653-022-01218-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 01/27/2022] [Indexed: 05/06/2023]
Abstract
The environmental exposure to trace metal(loid)s (As, Cd, Cu, Fe, Mn, Pb, and Zn) was assessed near a ferromanganese alloy plant using filters from personal particulate matter (PM) samplers (bioaccessible and non-bioaccessible fine and coarse fractions) and whole blood as short-term exposure markers, and scalp hair and fingernails as long-term biomarkers, collected from volunteers (n = 130) living in Santander Bay (northern Spain). Bioaccessible and non-bioaccessible metal(loid) concentrations in coarse and fine PM from personal samplers were determined by ICP-MS after extraction/digestion. Metal(loid) concentration in biomarkers was measured after alkaline dilution (whole blood) and acid digestion (fingernails and scalp hair) by ICP-MS as well. Results were discussed in terms of exposure, considering the distance to the main Mn source, and sex. In terms of exposure, significant differences were found for Mn in all the studied fractions of PM, As in whole blood, Mn and Cu in scalp hair and Mn and Pb in fingernails, with all concentrations being higher for those living closer to the Mn source, with the exception of Cu in scalp hair. Furthermore, the analysis of the correlation between Mn levels in the studied biomarkers and the wind-weighted distance to the main source of Mn allows us to conclude that scalp hair and mainly fingernails are appropriate biomarkers of long-term airborne Mn exposure. This was also confirmed by the significant positive correlations between scalp hair Mn and bioaccessible Mn in coarse and fine fractions, and between fingernails Mn and all PM fractions. This implies that people living closer to a ferromanganese alloy plant are exposed to higher levels of airborne metal(loid)s, mainly Mn, leading to higher levels of this metal in scalp hair and fingernails, which according to the literature, might affect some neurological outcomes. According to sex, significant differences were observed for Fe, Cu and Pb in whole blood, with higher concentrations of Fe and Pb in males, and higher levels of Cu in females; and for Mn, Cu, Zn, Cd and Pb in scalp hair, with higher concentrations in males for all metal(loid)s except Cu.
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Affiliation(s)
- B Markiv
- Departamento de Ingenierías Química y Biomolecular, Universidad de Cantabria, Santander, Spain.
| | - L Ruiz-Azcona
- Departamento de Enfermería, Universidad de Cantabria, Santander, Spain
| | - A Expósito
- Departamento de Ingenierías Química y Biomolecular, Universidad de Cantabria, Santander, Spain
| | - M Santibáñez
- Departamento de Enfermería, Universidad de Cantabria, Santander, Spain
| | - I Fernández-Olmo
- Departamento de Ingenierías Química y Biomolecular, Universidad de Cantabria, Santander, Spain
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Critical Involvement of Glial Cells in Manganese Neurotoxicity. BIOMED RESEARCH INTERNATIONAL 2021; 2021:1596185. [PMID: 34660781 PMCID: PMC8514895 DOI: 10.1155/2021/1596185] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 09/16/2021] [Accepted: 09/21/2021] [Indexed: 12/13/2022]
Abstract
Over the years, most of the research concerning manganese exposure was restricted to the toxicity of neuronal cells. Manganese is an essential trace element that in high doses exerts neurotoxic effects. However, in the last two decades, efforts have shifted toward a more comprehensive approach that takes into account the involvement of glial cells in the development of neurotoxicity as a brain insult. Glial cells provide structural, trophic, and metabolic support to neurons. Nevertheless, these cells play an active role in adult neurogenesis, regulation of synaptogenesis, and synaptic plasticity. Disturbances in glial cell function can lead to neurological disorders, including neurodegenerative diseases. This review highlights the pivotal role that glial cells have in manganese-induced neurotoxicity as well as the most sounding mechanisms involved in the development of this phenomenon.
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Martins AC, Krum BN, Queirós L, Tinkov AA, Skalny AV, Bowman AB, Aschner M. Manganese in the Diet: Bioaccessibility, Adequate Intake, and Neurotoxicological Effects. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:12893-12903. [PMID: 32298096 DOI: 10.1021/acs.jafc.0c00641] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Manganese (Mn) is an essential element that participates in several biological processes. Mn serves as a cofactor for several enzymes, such as glutamine synthetase and oxidoreductases, that have an important role in the defense of the organisms against oxidative stress. The diet is the main source of Mn intake for humans, and adequate daily intake levels for this metal change with age. Moreover, in higher amounts, Mn may be toxic, mainly to the brain. Here, we provide an overview of Mn occurrence in food, addressing its bioaccessibility and discussing the dietary standard and recommended intake of Mn consumption. In addition, we review some mechanisms underlying Mn-induced neurotoxicity.
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Affiliation(s)
- Airton C Martins
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York 10461, United States
| | - Bárbara Nunes Krum
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York 10461, United States
- Post-Graduate Program in Pharmacology, Federal University of Santa Maria (UFSM), Santa Maria, Rio Grande do Sul 97105-900, Brazil
| | - Libânia Queirós
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York 10461, United States
- Department of Molecular of Biology and Centre for Environmental and Marine Studies (CESAM), University of Aveiro, 3810-193 Aveiro, Portugal
| | - Alexey A Tinkov
- I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow 119146, Russia
- Yaroslavl State University Yaroslavl, 150003, Russia
- Federal Research Centre of Biological Systems and Agro-technologies of the Russian Academy of Sciences, Orenburg 460000, Russia
| | - Anatoly V Skalny
- I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow 119146, Russia
- Yaroslavl State University Yaroslavl, 150003, Russia
| | - Aaron B Bowman
- School of Health Sciences, Purdue University, West Lafayette, Indiana 47907, United States
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York 10461, United States
- I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow 119146, Russia
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Interactions between iron and manganese in neurotoxicity. Arch Toxicol 2020; 94:725-734. [PMID: 32180038 DOI: 10.1007/s00204-020-02652-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 01/27/2020] [Indexed: 12/31/2022]
Abstract
The essential and naturally occurring transition metal manganese (Mn) is present in the soil, water, air, and various foods. Manganese can accumulate in the brain if the Mn intake or exposure is excessive and this can result in neurotoxic effects. Manganese is important for the proper activation of different metabolic and antioxidant enzymes. There are numerous Mn importers and exporters. However, the exact transport mechanism for Mn is not fully understood. On the other hand, iron (Fe) is another well-known essential metal, which has redox activity in addition to chemical characteristics resembling those of Mn. Existing data show that interactions occur between Fe and Mn due to certain similarities regarding their mechanisms of the absorption and the transport. It has been disclosed that Mn-specific transporters, together with Fe transporters, regulate the Mn distribution in the brain and other peripheral tissues. In PC12 cells, a significant increase of transferrin receptor (TfR) mRNA expression was linked to Mn exposure and accompanied by elevated Fe uptake. In both humans and animals, there is a strong relationship between Fe and Mn metabolism. In the present review, special attention is paid to the interaction between Mn and Fe. In particular, Fe and Mn distribution, as well as the potential molecular mechanisms of Mn-induced neurotoxicity in cases of Fe deficiency, are discussed.
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Mercadante CJ, Prajapati M, Conboy HL, Dash ME, Herrera C, Pettiglio MA, Cintron-Rivera L, Salesky MA, Rao DB, Bartnikas TB. Manganese transporter Slc30a10 controls physiological manganese excretion and toxicity. J Clin Invest 2019; 129:5442-5461. [PMID: 31527311 PMCID: PMC6877324 DOI: 10.1172/jci129710] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Accepted: 09/10/2019] [Indexed: 12/30/2022] Open
Abstract
Manganese (Mn), an essential metal and nutrient, is toxic in excess. Toxicity classically results from inhalational exposures in individuals who work in industrial settings. The first known disease of inherited Mn excess, identified in 2012, is caused by mutations in the metal exporter SLC30A10 and is characterized by Mn excess, dystonia, cirrhosis, and polycythemia. To investigate the role of SLC30A10 in Mn homeostasis, we first generated whole-body Slc30a10-deficient mice, which developed severe Mn excess and impaired systemic and biliary Mn excretion. Slc30a10 localized to canalicular membranes of hepatocytes, but mice with liver Slc30a10 deficiency developed minimal Mn excess despite impaired biliary Mn excretion. Slc30a10 also localized to the apical membrane of enterocytes, but mice with Slc30a10 deficiency in small intestines developed minimal Mn excess despite impaired Mn export into the lumen of the small intestines. Finally, mice with Slc30a10 deficiency in liver and small intestines developed Mn excess that was less severe than that observed in mice with whole-body Slc30a10 deficiency, suggesting that additional sites of Slc30a10 expression contribute to Mn homeostasis. Overall, these results indicated that Slc30a10 is essential for Mn excretion by hepatocytes and enterocytes and could be an effective target for pharmacological intervention to treat Mn toxicity.
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Affiliation(s)
- Courtney J. Mercadante
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA
| | - Milankumar Prajapati
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA
| | - Heather L. Conboy
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA
| | - Miriam E. Dash
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA
| | - Carolina Herrera
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA
| | - Michael A. Pettiglio
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA
| | - Layra Cintron-Rivera
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA
| | - Madeleine A. Salesky
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA
| | - Deepa B. Rao
- Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, Maryland, USA
| | - Thomas B. Bartnikas
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA
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Zheng X, Fan R, Lu H, Wang B, Wu J, Wang P, Yang Y. A dual-emitting Tb(iii)&Yb(iii)-functionalized coordination polymer: a "turn-on" sensor for N-methylformamide in urine and a "turn-off" sensor for methylglyoxal in serum. Dalton Trans 2019; 48:14408-14417. [PMID: 31509135 DOI: 10.1039/c9dt02643f] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Fluorescent materials with lanthanide cations encapsulated in MOFs are currently used in numerous applications, especially in biosensors. Therefore, herein, two novel composites were designed and developed based on a Tb(iii)&Yb(iii)-functionalized Cu(ii)-coordination polymer, possessing higher thermal and water stability and fascinating fluorescence properties. The first bimetallic composite Tb@Cu-Hcbpp demonstrated broad ligand-centered emission and weak typical Tb3+ ion emission; moreover, it was used as an excellent ratiometric fluorescent sensor for the metabolic product NMF of DMF in the human body (LOD = 0.02 μM). In addition, the Yb3+ ions were doped into Tb@Cu-Hcbpp to improve the fluorescence performance of the green Tb3+ ion emission. Among the series of Tb1-xYbx@Cu-Hcbpp samples (x = 0.05, 0.10, 0.15, 0.20, 0.25, 0.30, 0.35 and 0.40), Tb0.85Yb0.15@Cu-Hcbpp showed maximum enhanced fluorescence intensity (almost 9.6 times that of the pure terbium system), but exhibited high fluorescence quenching efficiency for methylglyoxal (MGO), which could be used for the sensitive detection of MGO (LOD = 0.25 μM). Furthermore, the developed biosensors were successfully applied for the detection of NMF and MGO in urine and serum samples, and satisfactory results were obtained, showing good potential of these biosensors in practical applications such as in disease diagnosis and biochemical research.
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Affiliation(s)
- Xubin Zheng
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, P. R. China.
| | - Ruiqing Fan
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, P. R. China.
| | - Haoyang Lu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, P. R. China.
| | - Bowen Wang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, P. R. China.
| | - Jingkun Wu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, P. R. China.
| | - Ping Wang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, P. R. China.
| | - Yulin Yang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, P. R. China.
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Krivoshapkin P, Ivanets A, Torlopov M, Mikhaylov V, Srivastava V, Sillanpää M, Prozorovich V, Kouznetsova T, Koshevaya E, Krivoshapkina E. Nanochitin/manganese oxide-biodegradable hybrid sorbent for heavy metal ions. Carbohydr Polym 2019; 210:135-143. [DOI: 10.1016/j.carbpol.2019.01.045] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 12/29/2018] [Accepted: 01/13/2019] [Indexed: 10/27/2022]
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Tian Y, Guo S, Chen C, Zhao L, Li Z, Yan Y. Gene sequence screening for manganese poisoning-susceptible genes and analysis of gene interaction effects. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2018; 64:60-69. [PMID: 30300793 DOI: 10.1016/j.etap.2018.09.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Revised: 09/25/2018] [Accepted: 09/27/2018] [Indexed: 06/08/2023]
Abstract
Manganese poisoning is a common occupational disease, studies have found that the susceptibility to manganese poisoning differs in individuals. We adopted genome-wide sequencing methods to screen for susceptibility genes involved in gene-mediated metabolic pathways from the perspective of manganese poisoning. We identified 18,439 genes in this study, including 14,272 known genes and 4398 new genes. We then selected 17 differential genes using p values, of which 7 genes were down-regulated and 10 genes were up-regulated. Possible interaction genes for each differential gene were selected according to the String database. Sgk1, HCRTr1, HspB1, Rem2, Oprd1, ATF5, and TRHr identified in this study may be involved in oxidative stress mechanisms, dopamine (DA) synthesis, and neuronal survival during apoptosis and may affect susceptibility to manganese poisoning.
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Affiliation(s)
- Yutian Tian
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan 250062, China; Shandong Academy Occupational Health and Occupational Medicine, 18877 Jingshi Road, Jinan 250062, China.
| | - Shuhan Guo
- Shandong University of Traditional Chinese Medicine, 4655 University Road, Science and Technology Park, Changqing District, Jinan 250355, China
| | - Cengceng Chen
- Jining Center for Disease Control and Prevention, 26 Yingcui Road, Jining 272000, China
| | - Li Zhao
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan 250062, China; Shandong Academy Occupational Health and Occupational Medicine, 18877 Jingshi Road, Jinan 250062, China
| | - Zhen Li
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan 250062, China; Shandong Academy Occupational Health and Occupational Medicine, 18877 Jingshi Road, Jinan 250062, China
| | - Yongjian Yan
- Shandong Academy Occupational Health and Occupational Medicine, 18877 Jingshi Road, Jinan 250062, China.
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Adedara IA, Abolaji AO, Rocha JBT, Farombi EO. Diphenyl Diselenide Protects Against Mortality, Locomotor Deficits and Oxidative Stress in Drosophila melanogaster Model of Manganese-Induced Neurotoxicity. Neurochem Res 2016; 41:1430-8. [PMID: 26875733 DOI: 10.1007/s11064-016-1852-x] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 01/16/2016] [Accepted: 01/26/2016] [Indexed: 01/24/2023]
Abstract
Several experimental and epidemiological reports have associated manganese exposure with induction of oxidative stress and locomotor dysfunctions. Diphenyl diselenide (DPDS) is widely reported to exhibit antioxidant, anti-inflammatory and neuroprotective effects in in vitro and in vivo studies via multiple biochemical mechanisms. The present study investigated the protective effect of DPDS on manganese-induced toxicity in Drosophila melanogaster. The flies were exposed, in a dietary regimen, to manganese alone (30 mmol per kg) or in combination with DPDS (10 and 20 µmol per kg) for 7 consecutive days. Exposure to manganese significantly (p < 0.05) increased flies mortality, whereas the survivors exhibited significant locomotor deficits with increased acetylcholinesterase (AChE) activity. However, dietary supplementation with DPDS caused a significant decrease in mortality, improvement in locomotor activity and restoration of AChE activity in manganese-exposed flies. Additionally, the significant decreases in the total thiol level, activities of catalase and glutathione-S-transferase were accompanied with significant increases in the generation of reactive oxygen and nitrogen species and thiobarbituric acid reactive substances in flies exposed to manganese alone. Dietary supplementation with DPDS significantly augmented the antioxidant status and prevented manganese-induced oxidative stress in the treated flies. Collectively, the present data highlight that DPDS may be a promising chemopreventive drug candidate against neurotoxicity resulting from acute manganese exposure.
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Affiliation(s)
- Isaac A Adedara
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria.
| | - Amos O Abolaji
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Joao B T Rocha
- Departamento de Bioquímica e Biologia Molecular, CCNE, Universidade Federal de Santa Maria, Santa Maria, RS, 97105-900, Brazil
| | - Ebenezer O Farombi
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
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