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Li Q, Feng Y, Wang R, Liu R, Ba Y, Huang H. Recent insights into autophagy and metals/nanoparticles exposure. Toxicol Res 2023; 39:355-372. [PMID: 37398566 PMCID: PMC10313637 DOI: 10.1007/s43188-023-00184-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 03/08/2023] [Accepted: 04/04/2023] [Indexed: 07/04/2023] Open
Abstract
Some anthropogenic pollutants, such as heavy metals and nanoparticles (NPs), are widely distributed and a major threat to environmental safety and public health. In particular, lead (Pb), cadmium (Cd), chromium (Cr), arsenic (As), and mercury (Hg) have systemic toxicity even at extremely low concentrations, so they are listed as priority metals in relation to their significant public health burden. Aluminum (Al) is also toxic to multiple organs and is linked to Alzheimer's disease. As the utilization of many metal nanoparticles (MNPs) gradually gain traction in industrial and medical applications, they are increasingly being investigated to address potential toxicity by impairing certain biological barriers. The dominant toxic mechanism of these metals and MNPs is the induction of oxidative stress, which subsequently triggers lipid peroxidation, protein modification, and DNA damage. Notably, a growing body of research has revealed the linkage between dysregulated autophagy and some diseases, including neurodegenerative diseases and cancers. Among them, some metals or metal mixtures can act as environmental stimuli and disturb basal autophagic activity, which has an underlying adverse health effect. Some studies also revealed that specific autophagy inhibitors or activators could modify the abnormal autophagic flux attributed to continuous exposure to metals. In this review, we have gathered recent data about the contribution of the autophagy/mitophagy mediated toxic effects and focused on the involvement of some key regulatory factors of autophagic signaling during exposure to selected metals, metal mixtures, as well as MNPs in the real world. Besides this, we summarized the potential significance of interactions between autophagy and excessive reactive oxygen species (ROS)-mediated oxidative damage in the regulation of cell survival response to metals/NPs. A critical view is given on the application of autophagy activators/inhibitors to modulate the systematic toxicity of various metals/MNPs.
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Affiliation(s)
- Qiong Li
- Department of Environmental Health and Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, 450001 Henan People’s Republic of China
| | - Yajing Feng
- Department of Environmental Health and Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, 450001 Henan People’s Republic of China
| | - Ruike Wang
- Department of Environmental Health and Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, 450001 Henan People’s Republic of China
| | - Rundong Liu
- Department of Environmental Health and Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, 450001 Henan People’s Republic of China
| | - Yue Ba
- Department of Environmental Health and Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, 450001 Henan People’s Republic of China
| | - Hui Huang
- Department of Environmental Health and Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, 450001 Henan People’s Republic of China
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2
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Potentially toxic elements in the brains of people with multiple sclerosis. Sci Rep 2023; 13:655. [PMID: 36635465 PMCID: PMC9837144 DOI: 10.1038/s41598-022-27169-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 12/26/2022] [Indexed: 01/14/2023] Open
Abstract
Potentially toxic elements such as lead and aluminium have been proposed to play a role in the pathogenesis of multiple sclerosis (MS), since their neurotoxic mechanisms mimic many of the pathogenetic processes in MS. We therefore examined the distribution of several potentially toxic elements in the autopsied brains of people with and without MS, using two methods of elemental bio-imaging. Toxicants detected in the locus ceruleus were used as indicators of past exposures. Autometallography of paraffin sections from multiple brain regions of 21 MS patients and 109 controls detected inorganic mercury, silver, or bismuth in many locus ceruleus neurons of both groups, and in widespread blood vessels, oligodendrocytes, astrocytes, and neurons of four MS patients and one control. Laser ablation-inductively coupled plasma-mass spectrometry imaging of pons paraffin sections from all MS patients and 12 controls showed that combinations of iron, silver, lead, aluminium, mercury, nickel, and bismuth were present more often in the locus ceruleus of MS patients and were located predominantly in white matter tracts. Based on these results, we propose that metal toxicants in locus ceruleus neurons weaken the blood-brain barrier, enabling multiple interacting toxicants to pass through blood vessels and enter astrocytes and oligodendroglia, leading to demyelination.
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3
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Yuan L, Shi X, Tang BZ, Wang WX. Real-time in vitro monitoring of the subcellular toxicity of inorganic Hg and methylmercury in zebrafish cells. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2021; 236:105859. [PMID: 34004410 DOI: 10.1016/j.aquatox.2021.105859] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 04/19/2021] [Accepted: 05/01/2021] [Indexed: 06/12/2023]
Abstract
Mercury (Hg) is a prominent environmental contaminant and can cause various subcellular effects. Elucidating the different subcellular toxicities of inorganic Hg (Hg2+) and methylmercury (MeHg) is critical for understanding their overall cytotoxicity. In this study, we employed aggregation-induced emission (AIE) probes to investigate the toxicity of Hg at the subcellular level using an aquatic embryonic zebrafish fibroblast cell line ZF4 as a model. The dynamic monitoring of lysosomal pH and the mapping of pH distribution during Hg2+ or MeHg exposure were successfully realized for the first time. We found that both Hg2+ and MeHg decreased the mean lysosomal pH, but with contrasting effects and mechanisms. Hg2+ had a greater impact on lysosomal pH than MeHg at a similar intracellular concentration. In addition, Hg2+ in comparison to MeHg exposure led to an increased number of lysosomes, probably because of their different effects on autophagy. We further showed that MeHg (200 nM) exposure had an inverse effect on mitochondrial respiratory function. A high dose (1000 nM) of Hg2+ increased the amount of intracellular lipid droplets by 13%, indicating that lipid droplets may potentially play a role in Hg2+detoxification. Our study suggested that, compared with other parameters, lysosome pH was most sensitive to Hg2+ and MeHg. Therefore, lysosomal pH can be used as a potential biomarker to assess the cellular toxicity of Hg in vitro.
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Affiliation(s)
- Liuliang Yuan
- Division of Life Science, Hong Kong University of Science and Technology, Clearwater Bay, Kowloon, Hong Kong, China; School of Energy and Environment and State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China
| | - Xiujuan Shi
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, HKUST, Clear Water Bay, Kowloon, Hong Kong, China
| | - Ben Zhong Tang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, HKUST, Clear Water Bay, Kowloon, Hong Kong, China
| | - Wen-Xiong Wang
- School of Energy and Environment and State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China; Research Centre for the Oceans and Human Health, City University of Hong Kong Shenzhen Research Institute, Shenzhen518057, China.
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4
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Chen X, Wang D, Sun B, Liu C, Zhu K, Zhang A. GBE attenuates arsenite-induced hepatotoxicity by regulating E2F1-autophagy-E2F7a pathway and restoring lysosomal activity. J Cell Physiol 2020; 236:4050-4065. [PMID: 33174204 DOI: 10.1002/jcp.30147] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 10/15/2020] [Accepted: 10/27/2020] [Indexed: 11/07/2022]
Abstract
Arsenic is an environmental toxicant. Its overdose can cause liver damage. Autophagy has been reported to be involved in arsenite (iAs3+ ) cytotoxicity and plays a dual role in cell proliferation and cell death. However, the effect and molecular regulative mechanisms of iAs3+ on autophagy in hepatocytes remains largely unknown. Here, we found that iAs3+ exposure lead to hepatotoxicity by inducing autophagosome and autolysosome accumulation. On the one hand, iAs3+ promoted autophagosome synthesis by inhibiting E2F1/mTOR pathway in L-02 human hepatocytes. On the other, iAs3+ blocked autophagosome degradation partially via suppressing the expression of INPP5E and Rab7 as well as impairing lysosomal activity. More importantly, autophagosome and autolysosome accumulation induced by iAs3+ increased the protein level of E2F7a, which could further inhibit cell viability and induce apoptosis of L-02 cells. The treatment of Ginkgo biloba extract (GBE) effectively reduced autophagosome and autolysosome accumulation and thus alleviated iAs3+ -induced hepatotoxicity. Moreover, GBE could also protect lysosomal activity, promote the phosphorylation level of E2F1 (Ser364 and Thr433) and Rb (Ser780) as well as suppress the protein level of E2F7a in iAs3+ -treated L-02 cells. Taken together, our data suggested that autophagosome and autophagolysosome accumulation play a critical role for iAs3+ -induced hepatotoxicity, and GBE is a promising candidate for intervening iAs3+ induced liver damage by regulating E2F1-autophagy-E2F7a pathway and restoring lysosomal activity.
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Affiliation(s)
- Xiong Chen
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, Guizhou, China
| | - Dapeng Wang
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, Guizhou, China
| | - Baofei Sun
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, Guizhou, China
| | - Chunyan Liu
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, Guizhou, China
| | - Kai Zhu
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, Guizhou, China
| | - Aihua Zhang
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, Guizhou, China
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5
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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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Ferreira da Silva S, de Oliveira Lima M. Mercury in fish marketed in the Amazon Triple Frontier and Health Risk Assessment. CHEMOSPHERE 2020; 248:125989. [PMID: 32007773 DOI: 10.1016/j.chemosphere.2020.125989] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 12/29/2019] [Accepted: 01/20/2020] [Indexed: 06/10/2023]
Abstract
Fish has great socioeconomic, cultural, and nutritional importance for Amazonian populations. Despite all health benefits, fish can accumulate great amounts of mercury (Hg). The entry of Hg in aquatic trophic chains is an issue of concern to animal and human health. Higher risks of human exposure are strongly related to fish consumption. Upper Solimões population has one of the highest fish consumption rates of the Amazon. This study aimed to access the concentration of total Hg (THg) in muscle, liver, and gills of 17 species of fishes marketed in the Upper Solimões Region and Health Risk Assessment. Higher concentrations were observed in Carnivores/Piscivores. The highest THg concentration was found in liver of Cichla ocellaris (4.549 μg/g) and the lowest in gills of Hoplosternum littorale (0.002 μg/g). Most species had higher THg concentrations in muscle>liver>gills, in the Ebb period, and liver>muscle>gills, in the Flood period. Hoplias malabaricus, Pseudoplatystoma fasciatum, Plagioscion squamosissimus, Ageneiosus inermis, and C. ocellaris presented average THg concentrations above the safe limit stablished by WHO. THg levels in C. ocellaris, H. malabaricus, P. squamosissimus, P. fasciatum, and Semaprochilodus insignis were higher than those found in fish of heavily impacted areas. Signs of bioaccumulation and biomagnifications of Hg can already be observed in this region. The Western Amazon Region urgently needs government actions to inhibit Hg release in aquatic ecosystems and to advise this population on the safe amount of fish to be eaten according to species and period of the year.
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Affiliation(s)
- Stephani Ferreira da Silva
- Federal University of Pará, Aquatic Ecology and Fisheries Graduate Program, Rua Augusto Corrêa 1, Guamá, 66075-110, Belém, PA, Brazil.
| | - Marcelo de Oliveira Lima
- Federal University of Pará, Aquatic Ecology and Fisheries Graduate Program, Rua Augusto Corrêa 1, Guamá, 66075-110, Belém, PA, Brazil; Evandro Chagas Institute, Environment Section, Rodovia BR-316, Km 7 s/n, Levilândia, 67030-000, Ananindeua, PA, Brazil.
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7
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Rojas-Franco P, Franco-Colín M, Torres-Manzo AP, Blas-Valdivia V, Thompson-Bonilla MDR, Kandir S, Cano-Europa E. Endoplasmic reticulum stress participates in the pathophysiology of mercury-caused acute kidney injury. Ren Fail 2020; 41:1001-1010. [PMID: 31736398 PMCID: PMC6882499 DOI: 10.1080/0886022x.2019.1686019] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Acute exposure to mercury chloride (HgCl2) causes acute kidney injury (AKI). Some metals interfere with protein folding, leading to endoplasmic reticulum stress (ERS), and the activation of cell death mechanisms, but in the case of mercury, there is no knowledge about whether the ERS mediates tubular damage. This study aimed to determinate if HgCl2 causes an AKI course with temporary activation of ERS and if this mechanism is involved in kidney cell death. Male mice were intoxicated with 5 mg/kg HgCl2 and sacrificed after 24, 48, 72, and 96 h of mercury administration. The kidneys of euthanized mice were used to assess the renal function, oxidative stress, redox environment, antioxidant enzymatic system, cell death, and reticulum stress markers (PERK, ATF-6, and IRE1α pathways). The results indicate temporary-dependent renal dysfunction, oxidative stress, and an increase of glutathione-dependent enzymes involved in the bioaccumulation process of mercury, as well as the enhancement of caspase 3 activity along with IRE1a, GADD-153, and caspase 12 expressions. Mercury activates the PERK/eIF2α branch during the first 48 h. Meanwhile, the activation of PERK/ATF-4 branch allowed for ATF-4, ATF-6, and IRE1α pathways to enhance GADD-153. It led to the activation of caspases 12 and 3, which mediated the deaths of the tubular and glomerular cells. This study revealed temporary-dependent ERS present during AKI caused by HgCl2, as well as how it plays a pivotal role in kidney cell damage.
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Affiliation(s)
- Plácido Rojas-Franco
- Laboratorio de Metabolismo I Departamento de Fisiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México, México
| | - Margarita Franco-Colín
- Laboratorio de Metabolismo I Departamento de Fisiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México, México
| | | | - Vanessa Blas-Valdivia
- Laboratorio de Neurobiología, Departamento de Fisiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México, México
| | | | - Sinan Kandir
- Department of Physiology, Ceyhan Faculty of Veterinary Medicine, Cukurova University, Adana, Turkey
| | - Edgar Cano-Europa
- Laboratorio de Metabolismo I Departamento de Fisiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México, México
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8
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Hong M, Chen Y, Zhang Y, Xu D. A novel rhodamine-based Hg 2+ sensor with a simple structure and fine performance. Analyst 2019; 144:7351-7358. [PMID: 31663523 DOI: 10.1039/c9an01608b] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An excellent spectral sensor for Hg2+ named 2-(2-((2-aminoethyl)thio)ethyl)-3',6'-bis(diethylamino)spiro[isoindoline-1,9'-xanthen]-3-one (RMTE) was achieved by a one-step reaction between rhodamine B and thiobisethylamine. RMTE could detect Hg2+ in nearly pure water reversibly and highly selectively, indicated by a new increasing absorption peak at 561 nm and 170-fold enhanced fluorescence at 578 nm coupled with remarkable visual and fluorescence color changes. When the Hg2+ concentration ([Hg2+]) varied from 0 to 120 μM, the absorbance and fluorescence intensity of the RMTE solution responded linearly to [Hg2+] with the detection limits of 2.08 and 0.14 μM, respectively. RMTE could work in ecologically and biologically favorable pH values of 6.41-8.33. The binding mode of RMTE toward Hg2+ was 1 : 1. RMTE could monitor Hg2+ in environmental water and living cells effectively with low cytotoxicity.
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Affiliation(s)
- Miaomiao Hong
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China.
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9
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Wang Y, Zhang L, Zhang S, Liu Z, Chen L. High Spatiotemporal Resolution Observation of Glutathione Hydropersulfides in Living Cells and Tissue via a Two-Photon Ratiometric Fluorescent Probe. Anal Chem 2019; 91:7812-7818. [DOI: 10.1021/acs.analchem.9b01511] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Yue Wang
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Liangwei Zhang
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Songzi Zhang
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Zhe Liu
- Department of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, 273165, China
| | - Lingxin Chen
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao 266237, China
- Department of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, 273165, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China
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10
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Hazra S, Bodhak C, Chowdhury S, Sanyal D, Mandal S, Chattopadhyay K, Pramanik A. A novel tryptamine-appended rhodamine-based chemosensor for selective detection of Hg2+ present in aqueous medium and its biological applications. Anal Bioanal Chem 2019; 411:1143-1157. [DOI: 10.1007/s00216-018-1546-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 11/30/2018] [Accepted: 12/10/2018] [Indexed: 01/25/2023]
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11
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Orr SE, Barnes MC, Joshee L, Uchakina O, McKallip RJ, Bridges CC. Potential mechanisms of cellular injury following exposure to a physiologically relevant species of inorganic mercury. Toxicol Lett 2019; 304:13-20. [PMID: 30630035 DOI: 10.1016/j.toxlet.2019.01.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 12/19/2018] [Accepted: 01/07/2019] [Indexed: 01/06/2023]
Abstract
Mercury is a toxic metal that is found ubiquitously in the environment. Humans are exposed to different forms of mercury via ingestion, inhalation, and/or dermal absorption. Following exposure, mercuric ions may gain access to target cells and subsequently lead to cellular intoxication. The mechanisms by which mercury accumulation leads to cellular injury and death are not understood fully. Therefore, purpose of this study was to identify the specific intracellular mechanisms that are altered by exposure to inorganic mercury (Hg2+). Normal rat kidney (NRK) cells were exposed to a physiologically relevant form of Hg2+, as a conjugate of cysteine (10 μM or 50 μM). Alterations in oxidative stress were estimated by measuring lipid peroxidation and mitochondrial oxidative stress. Alterations in actin and tubulin were measured using specific fluorescent dyes. Calcium levels were measured using Fluo-3 AM Calcium Indicator while autophagy was identified with Premo™ Autophagy Sensor LC3B-GFP. The current findings show that exposure to Hg2+ leads to enhanced oxidative stress, alterations in cytoskeletal structure, increases in intracellular calcium, and enhanced autophagy. We have established a more complete understanding of intoxication and cellular injury induced by a relevant form of Hg2+ in proximal tubule cells.
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Affiliation(s)
- Sarah E Orr
- Department of Biomedical Sciences, Mercer University School of Medicine, Macon, GA, USA.
| | - Mary C Barnes
- Department of Biomedical Sciences, Mercer University School of Medicine, Macon, GA, USA.
| | - Lucy Joshee
- Department of Biomedical Sciences, Mercer University School of Medicine, Macon, GA, USA.
| | - Olga Uchakina
- Department of Biomedical Sciences, Mercer University School of Medicine, Macon, GA, USA.
| | - Robert J McKallip
- Department of Biomedical Sciences, Mercer University School of Medicine, Macon, GA, USA.
| | - Christy C Bridges
- Department of Biomedical Sciences, Mercer University School of Medicine, Macon, GA, USA.
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Chen N, Lin M, Liu N, Wang S, Xiao X. Methylmercury-induced testis damage is associated with activation of oxidative stress and germ cell autophagy. J Inorg Biochem 2019; 190:67-74. [DOI: 10.1016/j.jinorgbio.2018.10.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 10/15/2018] [Accepted: 10/16/2018] [Indexed: 12/22/2022]
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13
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Rojas-Franco P, Franco-Colín M, Camargo MEM, Carmona MME, Ortíz-Butrón MDRE, Blas-Valdivia V, Cano-Europa E. Phycobiliproteins and phycocyanin of Arthrospira maxima ( Spirulina) reduce apoptosis promoters and glomerular dysfunction in mercury-related acute kidney injury. TOXICOLOGY RESEARCH AND APPLICATION 2018. [DOI: 10.1177/2397847318805070] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Arthrospira maxima ( Spirulina) is considered a nutraceutical or functional food because it provides health benefits and it is used as nephroprotector because it contains nucleophilic compounds as phycobiliproteins and phycocyanin that prevent oxidative stress and cellular damage process. Also, it is known that inorganic mercury is bioaccumulated and exerted kidney toxicity. Despite the nephroprotective effect of Spirulina and its components, there is not enough information about the effect of them on renal function as well as the apoptosis process inhibition. This work aimed to investigate whether phycobiliproteins and phycocyanin of Spirulina can improve HgCl2-related glomerular and tubular renal dysfunction as well as the Bax, Bcl2, and effectors caspases alterations. Male mice were administrated with Spirulina, phycobiliproteins or phycocyanin 30 min before 5 mg/Kg HgCl2 administration. The nutraceuticals were administrated for the next 5 days. Then, the mice were euthanized. The renal function, caspases 3 and 9 activities, as well as Bax and Bcl2 expression were evaluated. Spirulina and its components prevent HgCl2-related apoptosis induction and glomerular dysfunction. We concluded that phycobiliproteins and phycocyanin of Spirulina reduce glomerular damage but not the tubular dysfunction in a mercury-related acute kidney injury.
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Affiliation(s)
- Placido Rojas-Franco
- Laboratorio de Metabolismo, Departamento de Fisiología, Instituto Politécnico Nacional, Delegación Gustavo Madero, México
| | - Margarita Franco-Colín
- Laboratorio de Metabolismo, Departamento de Fisiología, Instituto Politécnico Nacional, Delegación Gustavo Madero, México
| | - María Estela Meléndez Camargo
- Laboratorio de Toxicología Hepática y Renal, Departamento de Farmacia, Instituto Politécnico Nacional, Delegación Gustavo Madero, México
| | - María Mirian Estévez Carmona
- Laboratorio de Toxicología Hepática y Renal, Departamento de Farmacia, Instituto Politécnico Nacional, Delegación Gustavo Madero, México
| | - María del Rocío Elizabeth Ortíz-Butrón
- Laboratorio de Neurobiología, Departamento de Fisiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Delegación Gustavo Madero, México
| | - Vanessa Blas-Valdivia
- Laboratorio de Neurobiología, Departamento de Fisiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Delegación Gustavo Madero, México
| | - Edgar Cano-Europa
- Laboratorio de Metabolismo, Departamento de Fisiología, Instituto Politécnico Nacional, Delegación Gustavo Madero, México
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14
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Bjørklund G, Skalny AV, Rahman MM, Dadar M, Yassa HA, Aaseth J, Chirumbolo S, Skalnaya MG, Tinkov AA. Toxic metal(loid)-based pollutants and their possible role in autism spectrum disorder. ENVIRONMENTAL RESEARCH 2018; 166:234-250. [PMID: 29902778 DOI: 10.1016/j.envres.2018.05.020] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 05/18/2018] [Accepted: 05/18/2018] [Indexed: 06/08/2023]
Abstract
Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by deficits in social interaction, verbal and non-verbal communication, and stereotypic behaviors. Many studies support a significant relationship between many different environmental factors in ASD etiology. These factors include increased daily exposure to various toxic metal-based environmental pollutants, which represent a cause for concern in public health. This article reviews the most relevant toxic metals, commonly found, environmental pollutants, i.e., lead (Pb), mercury (Hg), aluminum (Al), and the metalloid arsenic (As). Additionally, it discusses how pollutants can be a possible pathogenetic cause of ASD through various mechanisms including neuroinflammation in different regions of the brain, fundamentally occurring through elevation of the proinflammatory profile of cytokines and aberrant expression of nuclear factor kappa B (NF-κB). Due to the worldwide increase in toxic environmental pollution, studies on the role of pollutants in neurodevelopmental disorders, including direct effects on the developing brain and the subjects' genetic susceptibility and polymorphism, are of utmost importance to achieve the best therapeutic approach and preventive strategies.
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Affiliation(s)
- Geir Bjørklund
- Council for Nutritional and Environmental Medicine, Mo i Rana, Norway.
| | - Anatoly V Skalny
- Peoples' Friendship University of Russia (RUDN University), Moscow, Russia; Yaroslavl State University, Yaroslavl, Russia; All-Russian Research Institute of Medicinal and Aromatic Plants, Moscow, Russia
| | - Md Mostafizur Rahman
- Department of Environmental Sciences, Jahangirnagar University, Dhaka, Bangladesh; Graduate School of Environmental Science, Hokkaido University, Japan
| | - Maryam Dadar
- Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
| | - Heba A Yassa
- Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Jan Aaseth
- Faculty of Health and Social Sciences, Inland Norway University of Applied Sciences, Elverum, Norway; Department of Research, Innlandet Hospital Trust, Brumunddal, Norway
| | - Salvatore Chirumbolo
- Department of Neurological and Movement Sciences, University of Verona, Verona, Italy
| | | | - Alexey A Tinkov
- Peoples' Friendship University of Russia (RUDN University), Moscow, Russia; Yaroslavl State University, Yaroslavl, Russia
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15
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Unsal V. Natural Phytotherapeutic Antioxidants in the Treatment of Mercury Intoxication-A Review. Adv Pharm Bull 2018; 8:365-376. [PMID: 30276132 PMCID: PMC6156483 DOI: 10.15171/apb.2018.043] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 07/23/2018] [Accepted: 08/09/2018] [Indexed: 12/11/2022] Open
Abstract
Heavy metals taken into the organism can make the toxic effects on the metabolism in various ways. For example, they may interact with proteins to alter and inhibit their enzymatic and structural functions. Mercury is one of the toxic elements that are widely distributed in nature. Mercury toxicity poses a serious threat to human health. It is an element that causes oxidative stress to increase in individuals, leading to tissue damage. Oxidative stress is the result of the imbalance between the production of oxidative species and cellular antioxidant defense. Phytotherapy continues to play an important role in health care. Natural phytotherapeutic antioxidants, exhibit a broad sequence of biological impacts, including anti-oxidative stress, anti-aging, anti-toxicicity and anticancer. Many studies have also shown that the phytotherapeutic agents play an important role in the removal of mercury from the tissue and in reducing oxidative stress. Our goal in this review was to investigate alternative ways of extracting the mercury in the tissue.
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Affiliation(s)
- Velid Unsal
- Corresponding author: Velid Unsal, Tel: 0482 2121395,
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16
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Goralski JL, Wu D, Thelin WR, Boucher RC, Button B. The in vitro effect of nebulised hypertonic saline on human bronchial epithelium. Eur Respir J 2018; 51:13993003.02652-2017. [PMID: 29599187 DOI: 10.1183/13993003.02652-2017] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 02/28/2018] [Indexed: 11/05/2022]
Abstract
Inhaled hypertonic saline (HS) is an effective therapy for muco-obstructive lung diseases. However, the mechanism of action and principles pertinent to HS administration remain unclear.An in vitro system aerosolised HS to epithelial cells at rates comparable to in vivo conditions. Airway surface liquid (ASL) volume and cell height responses were measured by confocal microscopy under normal and hyperconcentrated mucus states.Aerosolised HS produced a rapid increase in ASL height and decrease in cell height. Added ASL volume was quickly reabsorbed following termination of nebulisation, although cell height did not recover within the same time frame. ASL volume responses to repeated HS administrations were blunted, but could be restored by a hypotonic saline bolus interposed between HS administrations. HS-induced ASL hydration was prolonged with hyperconcentrated mucus on the airway surface, with more modest reductions in cell volume.Aerosolised HS produced osmotically induced increases in ASL height that were limited by active sodium absorption and cell volume-induced reductions in cell water permeability. Mucus on airway surfaces prolonged the effect of HS via mucus-dependent osmotic forces, suggesting that the duration of action of HS is increased in patients with hyperconcentrated mucus.
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Affiliation(s)
- Jennifer L Goralski
- Cystic Fibrosis Research and Treatment Center/Marsico Lung Institute, Chapel Hill, NC, USA.,Division of Pulmonary and Critical Care Medicine, Dept of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.,Division of Pediatric Pulmonology, Dept of Pediatrics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Dan Wu
- Cystic Fibrosis Research and Treatment Center/Marsico Lung Institute, Chapel Hill, NC, USA
| | | | - Richard C Boucher
- Cystic Fibrosis Research and Treatment Center/Marsico Lung Institute, Chapel Hill, NC, USA.,Division of Pulmonary and Critical Care Medicine, Dept of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Brian Button
- Cystic Fibrosis Research and Treatment Center/Marsico Lung Institute, Chapel Hill, NC, USA.,Dept of Biochemistry and Biophysics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
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17
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A new “on-off-on” fluorescent sensor for cascade recognition of Hg2+ and S2− ion in aqueous medium. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.03.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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18
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Skalny AV, Simashkova NV, Skalnaya MG, Klyushnik TP, Chernova LN, Tinkov AA. Mercury and autism spectrum disorders. Zh Nevrol Psikhiatr Im S S Korsakova 2018; 118:75-79. [DOI: 10.17116/jnevro20181185275] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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19
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Buelna-Chontal M, Franco M, Hernández-Esquivel L, Pavón N, Rodríguez-Zavala JS, Correa F, Jasso R, Pichardo-Ramos G, Santamaría J, González-Pacheco H, Soto V, Díaz-Ruíz JL, Chávez E. CDP-choline circumvents mercury-induced mitochondrial damage and renal dysfunction. Cell Biol Int 2017; 41:1356-1366. [PMID: 28884894 DOI: 10.1002/cbin.10871] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 09/02/2017] [Indexed: 11/06/2022]
Abstract
Heavy metal ions are known to produce harmful alterations on kidney function. Specifically, the accumulation of Hg2+ in kidney tissue may induce renal failure. In this work, the protective effect of CDP-choline against the deleterious effects induced by Hg2+ on renal function was studied. CDP-choline administered ip at a dose of 125 mg/kg body weight prevented the damage induced by Hg2+ administration at a dose of 3 mg/kg body weight. The findings indicate that CDP-choline guards mitochondria against Hg2+ -toxicity by preserving their ability to retain matrix content, such as accumulated Ca2+ . This nucleotide also protected mitochondria from Hg2+ -induced loss of the transmembrane electric gradient and from the generation of hydrogen peroxide and membrane TBARS. In addition, CDP-choline avoided the oxidative damage of mtDNA and inhibited the release of the interleukins IL-1 and IL6, recognized as markers of acute inflammatory reaction. After the administration of Hg2+ and CDP, CDP-choline maintained nearly normal levels of renal function and creatinine clearance, as well as blood urea nitrogen (BUN) and serum creatinine.
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Affiliation(s)
- Mabel Buelna-Chontal
- Departamento de Biomedicina Cardiovascular, Instituto Nacional de Cardiología, Ignacio Chávez, México, D. F. México
| | - Martha Franco
- Departamento de Fisopatología Renal, Instituto Nacional de Cardiología, Ignacio Chávez, México, D. F. México
| | - Luz Hernández-Esquivel
- Departamento de Bioquímica, Instituto Nacional de Cardiología, Ignacio Chávez, México, D. F. México
| | - Natalia Pavón
- Departamento de Farmacología, Instituto Nacional de Cardiología, Ignacio Chávez, México, D. F. México
| | - José S Rodríguez-Zavala
- Departamento de Bioquímica, Instituto Nacional de Cardiología, Ignacio Chávez, México, D. F. México
| | - Francisco Correa
- Departamento de Biomedicina Cardiovascular, Instituto Nacional de Cardiología, Ignacio Chávez, México, D. F. México
| | - Ricardo Jasso
- Departamento de Bioquímica, Instituto Nacional de Cardiología, Ignacio Chávez, México, D. F. México
| | - Gregorio Pichardo-Ramos
- Departamento de Bioquímica, Instituto Nacional de Cardiología, Ignacio Chávez, México, D. F. México
| | - José Santamaría
- Departamento de Fisopatología Renal, Instituto Nacional de Cardiología, Ignacio Chávez, México, D. F. México
| | | | - Virgilia Soto
- Departamento de Patología, Instituto Nacional de Cardiología, Ignacio Chávez, México, D. F. México
| | - Jorge L Díaz-Ruíz
- Departamento de Biomedicina Cardiovascular, Instituto Nacional de Cardiología, Ignacio Chávez, México, D. F. México
| | - Edmundo Chávez
- Departamento de Bioquímica, Instituto Nacional de Cardiología, Ignacio Chávez, México, D. F. México
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20
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Sahni S, Bae DH, Jansson PJ, Richardson DR. The mechanistic role of chemically diverse metal ions in the induction of autophagy. Pharmacol Res 2017; 119:118-127. [DOI: 10.1016/j.phrs.2017.01.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 01/06/2017] [Accepted: 01/09/2017] [Indexed: 12/12/2022]
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21
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Miranda RR, Bezerra Jr AG, Oliveira Ribeiro CA, Randi MAF, Voigt CL, Skytte L, Rasmussen KL, Kjeldsen F, Filipak Neto F. Toxicological interactions of silver nanoparticles and non-essential metals in human hepatocarcinoma cell line. Toxicol In Vitro 2017; 40:134-143. [DOI: 10.1016/j.tiv.2017.01.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Revised: 01/02/2017] [Accepted: 01/03/2017] [Indexed: 10/20/2022]
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22
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Choi JY, Won NH, Park JD, Jang S, Eom CY, Choi Y, Park YI, Dong MS. From the Cover: Ethylmercury-Induced Oxidative and Endoplasmic Reticulum Stress-Mediated Autophagic Cell Death: Involvement of Autophagosome-Lysosome Fusion Arrest. Toxicol Sci 2016; 154:27-42. [PMID: 27511942 DOI: 10.1093/toxsci/kfw155] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Ethylmercury (EtHg) is derived from the degradation of thimerosal, the most widely used organomercury compound. In this study, EtHg-induced toxicity and autophagy in the mouse kidney was observed and then the mechanism of toxicity was explored in vitro in HK-2 cells. Low doses of EtHg induced autophagy without causing any histopathological changes in mouse kidneys. However, mice treated with high doses of EtHg exhibited severe focal tubular cell necrosis of the proximal tubules with autophagy. EtHg dose-dependently increased the production of reactive oxygen species, reduced the mitochondrial membrane potential, activated the unfolded protein response, and increased cytosolic Ca2+ levels in HK-2 cells. Cell death induced by EtHg exposure was caused by autophagy and necrosis. N-acetyl cysteine and 4-phenylbutyric acid attenuated EtHg-induced stress and ameliorated the autophagic response in HK-2 cells. Furthermore, EtHg blocked autophagosome fusion with lysosomes, which was demonstrated via treatment with wortmannin and chloroquine. Low doses of EtHg and rapamycin, which resulted in minimal cytotoxicity, increased the levels of the autophagic SNARE complex STX17 (syntaxin 17)-VAMP8-SNAP29 without altering mRNA levels, but high dose of EtHg was cytotoxic. Inhibition of autophagic flux by chloroquin increased autophagosome formation and necrotic cell death in HK-2 cells. Collectively, our results show that EtHg induces autophagy via oxidative and ER stress and blockade of autophagic flux. Autophagy might play a dual role in EtHg-induced renal toxicity, being both protective following treatment with low doses of EtHg and detrimental following treatment with high doses.
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Affiliation(s)
- Ji-Yoon Choi
- *School of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Nam-Hee Won
- College of Medicine, Korea University, Seoul, Korea
| | | | - Sinae Jang
- Seoul Center, Korea Basic Science Institute, Seoul, Korea
| | - Chi-Yong Eom
- Seoul Center, Korea Basic Science Institute, Seoul, Korea
| | - Yongseok Choi
- *School of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Young In Park
- College of Pharmacy, Korea University, Sejong, Korea
| | - Mi-Sook Dong
- *School of Life Sciences and Biotechnology, Korea University, Seoul, Korea;
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23
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Ototoxicity of Divalent Metals. Neurotox Res 2016; 30:268-82. [DOI: 10.1007/s12640-016-9627-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 04/21/2016] [Accepted: 04/22/2016] [Indexed: 12/16/2022]
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24
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Apaydın FG, Baş H, Kalender S, Kalender Y. Subacute effects of low dose lead nitrate and mercury chloride exposure on kidney of rats. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2016; 41:219-224. [PMID: 26731605 DOI: 10.1016/j.etap.2015.12.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 11/30/2015] [Accepted: 12/13/2015] [Indexed: 06/05/2023]
Abstract
Lead nitrate and mercury chloride are the most common heavy metal pollutants. In the present study, the effects of lead and mercury induced nephrotoxicity were studied in Wistar rats. Lead nitrate (LN, 45 mg/kg b.w/day) and mercury chloride (MC, 0.02 mg/kg b.w/day) and their combination were administered orally for 28 days. Four groups of rats were used in the study: control, LN, MC and LN plus MC groups. Serum biochemical parameters, lipid peroxidation, antioxidant enzymes and histopathological changes in kidney tissues were investigated in all treatment groups. LN and MC caused severe histopathological changes. It was shown that LN, MC and also co-treatment with LN and MC exposure induced significant increase in serum urea, uric acid and creatinine levels. There were also statistically significant changes in antioxidant enzyme activities (SOD, CAT, GPx and GST) and lipid peroxidation (MDA) in all groups except control group. In this study, we showed that MC caused more harmful effects than LN in rats.
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Affiliation(s)
- Fatma Gökçe Apaydın
- Gazi University, Faculty of Science, Department of Biology, Ankara 06500, Turkey.
| | - Hatice Baş
- Bozok University, Faculty of Arts and Science, Department of Biology, Yozgat 66100, Turkey
| | - Suna Kalender
- Gazi University, Faculty of Gazi Education, Department of Science, Ankara 06500, Turkey
| | - Yusuf Kalender
- Gazi University, Faculty of Science, Department of Biology, Ankara 06500, Turkey
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25
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Tonazzi A, Giangregorio N, Console L, Scalise M, La Russa D, Notaristefano C, Brunelli E, Barca D, Indiveri C. Mitochondrial carnitine/acylcarnitine transporter, a novel target of mercury toxicity. Chem Res Toxicol 2015; 28:1015-22. [PMID: 25849418 DOI: 10.1021/acs.chemrestox.5b00050] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The effect of Hg(2+) and CH3Hg(+) on the mitochondrial carnitine/acylcarnitine transporter (CACT) has been studied on the recombinant protein and on the CACT extracted from HeLa cells or Zebrafish and reconstituted in proteoliposomes. Transport was abolished upon treatment of the recombinant CACT in proteoliposomes by Hg(2+) or CH3Hg(+). Inhibition was reversed by the SH reducing agent 1,4-dithioerythritol, GSH, and N-acetylcysteine. IC50 for Hg(2+) and CH3Hg(+) of 90 nM and 137 nM, respectively, were measured by dose-response analyses. Inhibition was abolished in the C-less CACT mutant. Strong reduction of inhibition by both reagents was observed in the C136A and some reduction in the C155A mutants. Inhibition similar to that of the WT was observed in the C23V/C58V/C89S/C155V/C283S mutant, containing only C136. Optimal inhibition by Hg(2+)was found in the four replacement mutants C23V/C58V/C89S/C283S containing both C136 and C155 indicating cross-reaction of Hg(2+) with the two Cys residues. Inhibition kinetic analysis showed mixed inhibition by Hg(2+) or competitive inhibition by CH3Hg(+). HeLa cells or Zebrafish were treated with the more potent inhibitor. Ten micromolar HgCl2 caused clear impairment of viability of HeLa cells. The transport assay in proteoliposomes with CACT extracted from treated cells showed that the transporter was inactivated and that DTE rescued the activity. Nearly identical results were observed with Zebrafish upon extraction of the CACT from the liver of the treated animals that, indeed, showed accumulation of the mercurial compound.
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Affiliation(s)
- Annamaria Tonazzi
- †CNR Institute of Biomembranes and Bioenergetics, via Amendola 165/A, 70126 Bari, Italy.,‡Department of Bioscience, Biotechnology and Biopharmaceutics, University of Bari, Bari, Italy
| | - Nicola Giangregorio
- †CNR Institute of Biomembranes and Bioenergetics, via Amendola 165/A, 70126 Bari, Italy.,‡Department of Bioscience, Biotechnology and Biopharmaceutics, University of Bari, Bari, Italy
| | - Lara Console
- §Department DiBEST (Biologia, Ecologia, Scienze della Terra) Unit of Biochemistry and Molecular Biotechnology, University of Calabria, Via Bucci 4C, 87036 Arcavacata di Rende, Italy
| | - Mariafrancesca Scalise
- §Department DiBEST (Biologia, Ecologia, Scienze della Terra) Unit of Biochemistry and Molecular Biotechnology, University of Calabria, Via Bucci 4C, 87036 Arcavacata di Rende, Italy
| | - Daniele La Russa
- §Department DiBEST (Biologia, Ecologia, Scienze della Terra) Unit of Biochemistry and Molecular Biotechnology, University of Calabria, Via Bucci 4C, 87036 Arcavacata di Rende, Italy
| | - Caterina Notaristefano
- ‡Department of Bioscience, Biotechnology and Biopharmaceutics, University of Bari, Bari, Italy
| | - Elvira Brunelli
- §Department DiBEST (Biologia, Ecologia, Scienze della Terra) Unit of Biochemistry and Molecular Biotechnology, University of Calabria, Via Bucci 4C, 87036 Arcavacata di Rende, Italy
| | - Donatella Barca
- §Department DiBEST (Biologia, Ecologia, Scienze della Terra) Unit of Biochemistry and Molecular Biotechnology, University of Calabria, Via Bucci 4C, 87036 Arcavacata di Rende, Italy
| | - Cesare Indiveri
- †CNR Institute of Biomembranes and Bioenergetics, via Amendola 165/A, 70126 Bari, Italy.,§Department DiBEST (Biologia, Ecologia, Scienze della Terra) Unit of Biochemistry and Molecular Biotechnology, University of Calabria, Via Bucci 4C, 87036 Arcavacata di Rende, Italy
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