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Şahin S, Azarkan SY, Türksoy VA. Evaluation of the effect of cannabidiol on the THLE-2 liver cell line exposed to lead. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 923:170901. [PMID: 38401722 DOI: 10.1016/j.scitotenv.2024.170901] [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: 12/13/2023] [Revised: 02/08/2024] [Accepted: 02/09/2024] [Indexed: 02/26/2024]
Abstract
Environmental and soil pollution increase the likelihood of human exposure to toxic metals. Therefore, there is a need for new methods and substances to protect individuals against the harmful effects caused by toxic metals. The study is the first to aim at determining the protective effect of cannabidiol (CBD) against oxidative stress and inflammation induced by toxic metal exposure in Transformed Human Liver Epithelial-2 (THLE-2) cell lines representing healthy liver cells. The IC50 value was determined by exposing THLE-2 human liver healthy cell line to different molarities of lead (Pb) using the XTT kit. The protective efficacy of CBD was assessed by adding 5 μM CBD in addition to the Pb doses determined at IC50 levels to the Pb groups created in cell lines. The levels of GSH, MDA, MPO, CAT, TNF-α, IL-1β, and IL-6 in cell lines were determined using ELISA kits. The inhibition of toxic metal entry into the cells by CBD was assessed through ICP-MS analysis. The IC50 value for Pb was determined as 10 μM in 2D cell lines and 25 μM in 3D cell lines. It was observed that the application of 5 μM concentration of CBD, along with the determined IC50 doses for Pb, increased the cell proliferation rate. Furthermore, the decrease in GSH and CAT levels and the increase in MDA, MPO, TNF-α, IL-1β, and IL-6 levels observed in cell lines treated only with Pb were reversed with the application of CBD. The ICP-MS analysis revealed that CBD reduced the cellular uptake of Pb. The reversal of oxidative stress and inflammation induced by Pb, the increase in cell proliferation, and the reduction in the cellular uptake of toxic metals by CBD can be considered as strong evidence for the protective use of CBD in Pb exposures.
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Affiliation(s)
- Serkan Şahin
- Department of Medical Pharmacology, Faculty of Medicine, Yozgat Bozok University, Yozgat, Turkey.
| | - Serap Yalçın Azarkan
- Department of Medical Pharmacology, Faculty of Medicine, Kırşehir Ahi Evran University, Kırşehir, Turkey.
| | - Vugar Ali Türksoy
- Department of Public Health, Faculty of Medicine, Yozgat Bozok University, Yozgat, Turkey.
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Wang W, Xue J, Zhang L, He M, You J. Extraction of heavy metals from copper tailings by ryegrass (Lolium perenne L.) with the assistance of degradable chelating agents. Sci Rep 2024; 14:7663. [PMID: 38561404 PMCID: PMC10984975 DOI: 10.1038/s41598-024-58486-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 03/29/2024] [Indexed: 04/04/2024] Open
Abstract
Heavy metal contamination is an urgent ecological governance problem in mining areas. In order to seek for a green and environmentally friendly reagent with better plant restoration effect to solve the problem of low efficiency in plant restoration in heavy metal pollution soil. In this study, we evaluated the effects of three biodegradable chelating agents, namely citric acid (CA), fulvic acid (FA) and polyaspartic acid (PASP), on the physicochemical properties of copper tailings, growth of ryegrass (Lolium perenne L.) and heavy metal accumulation therein. The results showed that the chelating agent application improved the physicochemical properties of copper tailings, increased the biomass of ryegrass and enriched more Cu and Cd in copper tailings. In the control group, the main existing forms of Cu and Cd were oxidizable state, followed by residual, weak acid soluble and reducible states. After the CA, FA or PASP application, Cu and Cd were converted from the residual and oxidizable states to the reducible and weak acid soluble states, whose bioavailability in copper tailings were thus enhanced. Besides, the chelating agent incorporation improved the Cu and Cd extraction efficiencies of ryegrass from copper tailings, as manifested by increased root and stem contents of Cu and Cd by 30.29-103.42%, 11.43-74.29%, 2.98-110.98% and 11.11-111.11%, respectively, in comparison with the control group. In the presence of multiple heavy metals, CA, FA or PASP showed selectivity regarding the ryegrass extraction of heavy metals from copper tailings. PCA analysis revealed that the CA-4 and PASP-7 treatment had great remediation potentials against Cu and Cd in copper tailings, respectively, as manifested by increases in Cu and Cd contents in ryegrass by 90.98% and 74.29% compared to the CK group.
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Affiliation(s)
- Weiwei Wang
- School of Chemical and Environmental Engineering, China University of Mining and Technology-Beijing, Beijing, 100083, China
| | - Jinchun Xue
- School of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Nanchang, 330013, Jiangxi, China.
| | - Liping Zhang
- School of Chemical and Environmental Engineering, China University of Mining and Technology-Beijing, Beijing, 100083, China
| | - Min He
- School of Software Engineering, Jiangxi University of Science and Technology, Nanchang, 330013, China.
| | - Jiajia You
- School of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Nanchang, 330013, Jiangxi, China
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Tzima CS, Banti CN, Hatzidimitriou AG, Hadjikakou SK. Possible implementation of salicylate anions in lead detoxification. J Inorg Biochem 2023; 244:112225. [PMID: 37075542 DOI: 10.1016/j.jinorgbio.2023.112225] [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: 02/09/2023] [Revised: 04/02/2023] [Accepted: 04/11/2023] [Indexed: 04/21/2023]
Abstract
The water-soluble coordination polymer of formula {[Pb(Sal)2(H2O)]n} (SaLead), was obtained from the reaction between Pb(NO3)2 and the potassium salt of salicylic acid (SalH), an anti-inflammatory drug, which is also use as food preservation, in cosmetics etc. The compound was characterized by melting point, Attenuated Total Reflectance-Fourier Transform Infra-Red (ATR-FTIR) spectroscopy and X-ray diffraction crystallography (XRD) in solid state and in solution by Ultra Violet (UV) and 1H NMR spectroscopies. The binding affinity of SalK to Pb(II) ions towards SaLead was determined in order to examine its possible implementation in lead detoxification. The in vitro non-toxic behaviour of SalK and its complex SaLead was evaluated against normal human fetal lung fibroblast cells (MRC-5). The corresponding IC50 values are 260 ± 13 and > 1600 μM respectively. The non-genotoxic in vitro activity of SaLead was confirmed with the micronucleus (MN) assay, while its in vivo non-toxicity behaviour was evaluated with Allium cepa and Artemia salina assays.
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Affiliation(s)
- Chrysoula S Tzima
- Section of Inorganic and Analytical Chemistry, Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece
| | - Christina N Banti
- Section of Inorganic and Analytical Chemistry, Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece.
| | | | - Sotiris K Hadjikakou
- Section of Inorganic and Analytical Chemistry, Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece; University Research Center of Ioannina (URCI), Institute of Materials Science and Computing, Ioannina, Greece.
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4
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Wang Y, Zhou H, Che Y, Wan X, Ding X, Zheng S, Wu C, Qin M, Xu Y, Yu Y, Kulyar MFEA, Li K, Wu Y. Emblica officinalis mitigates intestinal toxicity of mice by modulating gut microbiota in lead exposure. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 253:114648. [PMID: 36812873 DOI: 10.1016/j.ecoenv.2023.114648] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 02/05/2023] [Accepted: 02/11/2023] [Indexed: 06/18/2023]
Abstract
Lead (Pb) contamination has been affecting public health for decades. As a plant-derived medicine, the safety and effectiveness of Emblica officinalis (E. officinalis) fruit extract has been emphasized. The current study focused on mitigating the adverse effects of lead (Pb) exposure in reducing its toxicity worldwide. According to our findings, E. officinalis significantly improved weight loss and colon length shortening (p < 0.05 or p < 0.01). The data of colon histopathology and serum levels of inflammatory cytokines indicated a positive impact to the colonic tissue and inflammatory cell infiltration in a dose-dependent manner. Moreover, we confirmed the expression level improvement of tight junction proteins (TJPs), including ZO-1, Claudin-1, and Occludin. Furthermore, we found that the abundance of some commensal species necessary for maintaining homeostasis and other beneficial function decreased in Pb exposure model, while a remarkable reversion impact was noticed on the intestinal microbiome composition in the treatment group. These findings were consistent with our speculations that E. officinalis could mitigate the adverse effects caused by Pb in alleviating intestinal tissue damage, intestinal barrier disruption, and inflammation. Meanwhile, the variations in gut microbiota might drive the fulfilling current impact. Hence, the present study could provide the theoretical basis for mitigating intestinal toxicity induced by Pb exposure with the help of E. officinalis.
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Affiliation(s)
- Yaping Wang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China; College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Hui Zhou
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Yanyun Che
- Engineering Laboratory for National Healthcare Theories and Products of Yunnan Province, Yunnan University of Chinese Medicine, Kunming 650500, PR China
| | - Xin Wan
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Xiaoxue Ding
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Shengnan Zheng
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Chenyang Wu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, PR China
| | - Miao Qin
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Yanling Xu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Yi Yu
- Department of Anesthesiology, Affiliated Stomatological Hospital, Nanjing Medical University, Nanjing 210029, PR China
| | - Muhammad Fakhar-E-Alam Kulyar
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China; College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Kun Li
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China; Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Yi Wu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China; Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China.
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Shiani A, Sharafi K, Omer AK, Kiani A, Karamimatin B, Massahi T, Ebrahimzadeh G. A systematic literature review on the association between exposures to toxic elements and an autism spectrum disorder. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 857:159246. [PMID: 36220469 DOI: 10.1016/j.scitotenv.2022.159246] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 09/30/2022] [Accepted: 10/01/2022] [Indexed: 05/16/2023]
Abstract
BACKGROUND AND AIM Autism spectrum disorder (ASD) is a neurodevelopmental illness characterized by difficulties in social communication and repetitive behaviors. There have been many previous studies of toxic metals in ASD. Therefore, the priority of this study is to review the relationships between exposure to toxic metals and ASD. MATERIALS & METHODS This study was based on a comprehensive search of international databases, such as Web of Science, Science Direct, Scopus, PubMed, and Google Scholar, for all works related to the subject under discussion from 1982 to 2022. We further summarize published data linked to this topic and discuss with clarifying evidence that agrees and conflicts with the association between exposure to toxic metals, including mercury (Hg), lead (Pb), cadmium (Cd), arsenic (As), and aluminum (Al) and ASD. RESULTS 40 out of 63 papers met the requirements for meta-analysis. Blood Pb levels (standardized mean difference (SMD) = 0.81; 95 % confidence interval (CI): 0.36-1.25), blood Hg (SMD = 0.90; CI: 0.30-1.49), hair Pb (SMD = 1.47; CI: 0.03-2.92), urine As (SMD = 0.65; CI: 0.22-1.09), and urine Al levels (SMD = 0.85; CI: 0.40-1.29) in autistic individuals were significantly higher than those of healthy control (HC). Whereas, blood As levels (SMD = 1.33; CI: -1.32-3.97), hair As (SMD = 0.55; CI: -0.14-1.24), hair Cd (SMD = 0.60; CI: -0.31-1.51), hair Hg (SMD = 0.41; CI: -0.30-1.12), hair Al (SMD = 0.87; CI: -0.02-1.77), urine Pb (SMD = -0.68; CI: -2.55-1.20), urine Cd (SMD = -0.26; CI: -0.94-0.41), and urine Hg levels (SMD = 0.47; CI: -0.09-1.04) in autistic individuals were significantly lower than those of HC. CONCLUSION Toxic metal content significantly differed between individuals with ASD and HC in the current meta-analysis. The results assist in clarifying the significance of toxic metals as environmental factors in the development of ASD.
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Affiliation(s)
- Amir Shiani
- Department of Speech Therapy, School of Rehabilitation Sciences, Kermanshah University of Medical Sciences, Kermanshah, Iran; Clinical Research Development Center, Taleghani and Imam Ali Hospital, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Kiomars Sharafi
- Research Center for Environmental Determinants of Health (RCEDH), Research Institute for Health, Kermanshah University of Medical Sciences, Kermanshah, Iran; Department of Environmental Health Engineering, School of Public Health, Kermanshah University of Medical Sciences, Kermanshah, Iran.
| | - Abdullah Khalid Omer
- Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran; Razga Company, Kurdistan Region, Iraq.
| | - Amir Kiani
- Regenerative Medicine Research Center (RMRC), Kermanshah University of Medical Sciences, Kermanshah, Iran; Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Behzad Karamimatin
- Research Center for Environmental Determinants of Health (RCEDH), Research Institute for Health, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Tooraj Massahi
- Students Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Gholamreza Ebrahimzadeh
- Department of Environmental Health Engineering, School of Public Health, Zabol University of Medical Sciences, Zabol, Iran
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6
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Li Y, Zhang Z, Liu X, Che S, Shi N, Chen Y, Yan M. Adsorption behavior and mechanism of Lead (Pb 2+) by sulfate polysaccharide from Enteromorpha prolifera. Int J Biol Macromol 2022; 207:760-770. [PMID: 35351544 DOI: 10.1016/j.ijbiomac.2022.03.133] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 03/15/2022] [Accepted: 03/21/2022] [Indexed: 12/12/2022]
Abstract
Lead (Pb2+) pollution poses severe healthy and ecological risks to humans. In this work, sulfate polysaccharide from Enteromorpha prolifera (SPE) was utilized for Pb2+ adsorption from simulated intestinal fluid. In order to evaluate its adsorption behaviors comprehensively, batch adsorption of Pb2+ was investigated under different conditions. Results showed that SPE presents high adsorption ability for Pb2+ through chemical adsorption process and the maximum adsorption capacity for Pb2+ was 278.5 mg/g. And SPE exhibited higher removal efficiency (≥60%) for trace Pb2+ (<10 mg/L) compared to that of other adsorbents based on polysaccharide. Besides, its adsorption can be described by Langmuir isotherm and pseudo-second-order kinetic models. Further, XRD, FTIR, and XPS were used to characterize the possible interaction of Pb2+ with SPE, and the results showed that carboxyl and hydroxyl groups in SPE play more important role than that of sulfate group. Our work represents the first assessment of Pb2+ adsorption properties of SPE. This investigation highlights the potential application of SPE to protect the body from hazard of food-derived heavy metals.
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Affiliation(s)
- Yinping Li
- College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Zhuanyuan Zhang
- College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Xiaoyan Liu
- College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Shuai Che
- Key laboratory of Marine Genetics and Breeding, Ministry of Education, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China
| | - Naiwen Shi
- College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Yiming Chen
- College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Mingyan Yan
- College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China.
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Aksoy OY, Bastug F, Pac Kisaarslan A, Celik B. An unusual cause of hypertension: Answers. Pediatr Nephrol 2021; 36:2115-2116. [PMID: 33646390 DOI: 10.1007/s00467-021-04978-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 01/21/2021] [Indexed: 11/29/2022]
Affiliation(s)
- Ozlem Yuksel Aksoy
- Department of Pediatric Nephrology, Kayseri City Hospital, Kayseri, Turkey.
| | - Funda Bastug
- Department of Pediatric Nephrology, Kayseri City Hospital, Kayseri, Turkey
| | | | - Binnaz Celik
- Department of Pediatrics, Kayseri City Hospital, Kayseri, Turkey
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Yu HT, Zhen J, Leng JY, Cai L, Ji HL, Keller BB. Zinc as a countermeasure for cadmium toxicity. Acta Pharmacol Sin 2021; 42:340-346. [PMID: 32284539 PMCID: PMC8027184 DOI: 10.1038/s41401-020-0396-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 03/15/2020] [Indexed: 12/11/2022] Open
Abstract
Cadmium (Cd) is an important environmental pollutant and long-term Cd exposure is closely related to autoimmune diseases, cancer, cardiovascular diseases (CVD), and hepatic dysfunction. Zinc (Zn) is an essential metal that plays key roles in protein structure, catalysis, and regulation of their function. Numerous studies have shown that Zn can reduce Cd toxicity; however, the underlying mechanisms have not been extensively explored. Preclinical studies have revealed direct competition for sarcolemmal uptake between these two metals. Multiple sarcolemmal transporters participate in Cd uptake, including Zn transporters, calcium channels, and DMT1 (divalent metal transporter 1). Zn also induces several protective mechanisms, including MT (metallothionein) induction and favorable redox homeostasis. This review summarizes current knowledge related to the role of Zn and metal transporters in reducing Cd toxicity and discusses potential future directions of related research.
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Affiliation(s)
- Hai-Tao Yu
- The First Hospital of Jilin University, Changchun, 130021, China
- Pediatric Research Institute, Department of Pediatrics, University of Louisville School of Medicine, Louisville, KY, 40202, USA
- Pediatric Heart Research Program, Cardiovascular Innovation Institute, University of Louisville School of Medicine, Louisville, KY, 40202, USA
| | - Juan Zhen
- The First Hospital of Jilin University, Changchun, 130021, China
- Pediatric Research Institute, Department of Pediatrics, University of Louisville School of Medicine, Louisville, KY, 40202, USA
- Pediatric Heart Research Program, Cardiovascular Innovation Institute, University of Louisville School of Medicine, Louisville, KY, 40202, USA
| | - Ji-Yan Leng
- The First Hospital of Jilin University, Changchun, 130021, China
| | - Lu Cai
- Pediatric Research Institute, Department of Pediatrics, University of Louisville School of Medicine, Louisville, KY, 40202, USA
- Department of Radiation Oncology, University of Louisville School of Medicine, Louisville, KY, 40202, USA
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY, 40202, USA
| | - Hong-Lei Ji
- The First Hospital of Jilin University, Changchun, 130021, China.
| | - Bradley B Keller
- Pediatric Heart Research Program, Cardiovascular Innovation Institute, University of Louisville School of Medicine, Louisville, KY, 40202, USA.
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY, 40202, USA.
- Cincinnati Children's Heart Institute, Greater Louisville and Western Kentucky Practice, Louisville, KY, 40202, USA.
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Keattanong P, Wasukan N, Kuno M, Srisung S. Synthesis, structural characterization, computational studies and stability evaluations of metal ions and ZnONPs complexes with dimercaptosuccinic acid. Heliyon 2021; 7:e05962. [PMID: 33553730 PMCID: PMC7851782 DOI: 10.1016/j.heliyon.2021.e05962] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 11/12/2020] [Accepted: 01/08/2021] [Indexed: 11/18/2022] Open
Abstract
Meso-2,3-dimercaptosuccinic acid (DMSA) is one of the efficient chelating reagents for treating the toxicity of several heavy metals. Currently, nanomaterial have been applied to various parts including zinc Oxide nanoparticles (ZnONPs). ZnONPs have several properties and are used as many applications. An increasing the amount of ZnONPs in commercial products causes risks related to free radicals or reactive oxygen species (ROS) in the body, leading to oxidative stress and eventually to the cancer process. In the present work, we mainly focused on the study of DMSA complexes in term of metal ions and nanoparticles. The synthesis of DMSA-ZnONPs by the co-precipitation method were determined, followed by Scanning Electron Microscope, Fourier Transform Infrared Spectroscopy and UV-Vis spectrophotometry confirming successful synthesis process. The stability study of the DMSA complexes with metal ions and ZnONPs were determined and evaluated the stability constant (K), with the Benesi- Hildebrand equation. All complexes with DMSA were formed at a 1:2 ratio by the dithiol group and the carboxyl group with different stability constants. Therefore, these results can help of an understanding of the interaction and its behavior between DMSA with heavy metal ion and ZnONPs. In addition, the stable structure of DMSA and metal ion complexes were predicted using the B3LYP and the 6-31G (d,p) basis set which the most stable structure of meso-DMSA was 2R,3S conformation and the metal ions and DMSA complexes was complex 2a with the binding energy of -1553.46 kcal mol-1.
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Affiliation(s)
- Poonyawee Keattanong
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumwit 23, Wattana District, Bangkok, 10110, Thailand
| | - Nootcharin Wasukan
- National Science and Technology Development Agency (NSTDA), 111 Thailand Science Park, Khlong Luang, Pathum Thani, 12120, Thailand
| | - Mayuso Kuno
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumwit 23, Wattana District, Bangkok, 10110, Thailand
| | - Sujittra Srisung
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumwit 23, Wattana District, Bangkok, 10110, Thailand
- Corresponding author.
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Geršl V, Hrdina R, Vávrová J, Holečková M, Palička V, Voglová J, Mazurová Y, Bajgar J. Effects of Repeated Administration of Dithiol Chelating Agent - Sodium 2,3-Dimercapto-1-propanesulphonate (DMPS) - On Biochemical and Haematological Parameters in Rabbits. ACTA MEDICA (HRADEC KRÁLOVÉ) 2020. [DOI: 10.14712/18059694.2020.34] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The effects of weekly intravenously administered a dithiol chelating agent - sodium 2,3-dimercaptopropanesulphonate (DMPS) - in a single dose of 50 mg/kg/week for 10 weeks on biochemical and haematological parameters were studied in rabbits. DMPS was well tolerated, an increase in body weight was similar in the DMPS-treated and control animals. DMPS caused significant decrease in plasma calcium and vitamin E concentrations at the end of the experiment. No significant differences in haematological parameters between the DMPS and control groups were observed. A significant decrease in magnesium content in myocardial tissue was observed in the DMPS-treated rabbits. The above-mentioned biochemical changes should be taken into account in studies of possible chelating and radical scavenging effects of DMPS in various pathological conditions.
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Rajak C, Singh N, Parashar P. Metal toxicity and natural antidotes: prevention is better than cure. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:43582-43598. [PMID: 32951168 DOI: 10.1007/s11356-020-10783-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 09/09/2020] [Indexed: 06/11/2023]
Abstract
Toxicity due to heavy metals (HM), specifically mercury (Hg), arsenic (As), lead (Pb), and cadmium (Cd) remains a challenge to scientists till date. This review gives insights into natural antidotes for the management and prevention of HM toxicity. Various databases such as PubMed, Embase, and Science Direct were searched for available facts on natural antidotes and their commercial products against HM toxicity till date. Toxicity owing to such metals needs prevention rather than therapy. Natural antidotes, fruits and vegetables, rich in antioxidant are the answers to such toxicities. Synthetic chelators impart a major drawback of removing essential metals required for normal body function, along with the toxic one. Natural antioxidants are bestowed with scavenging and chelation properties and can be alternative for synthetic chelating agents. Natural compounds are abundantly available, economic, and have minimal side effects when compared with classical chelators. Prevention is better than cure and thus adding plentiful vegetables and fruits to our diet can combat HM toxicity-related illness. Graphical abstract.
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Affiliation(s)
- Chetan Rajak
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Near CRPF Base Camp, Ahmadpur urf Kamlapur, Bijnor-Sisendi Road, Sarojini Nagar, Lucknow, Uttar Pradesh, 226002, India
| | - Neelu Singh
- Department of Pharmaceutical Sciences, Babasaheb Bhimrao Ambedkar University (A Central University), Vidya Vihar, Raebareli Road, Lucknow, UP, 226025, India
| | - Poonam Parashar
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Near CRPF Base Camp, Ahmadpur urf Kamlapur, Bijnor-Sisendi Road, Sarojini Nagar, Lucknow, Uttar Pradesh, 226002, India.
- Department of Pharmaceutical Sciences, Babasaheb Bhimrao Ambedkar University (A Central University), Vidya Vihar, Raebareli Road, Lucknow, UP, 226025, India.
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Ahmed SA, Hasan MN, Bagchi D, Altass HM, Morad M, Jassas RS, Hameed AM, Patwari J, Alessa H, Alharbi A, Pal SK. Combating Essential Metal Toxicity: Key Information from Optical Spectroscopy. ACS OMEGA 2020; 5:15666-15672. [PMID: 32637841 PMCID: PMC7331209 DOI: 10.1021/acsomega.0c01898] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 06/01/2020] [Indexed: 05/11/2023]
Abstract
Chelation therapy is one of the most effective and widely accepted methods of treatment to reduce metal toxicity caused by an excess amount of essential metals. Essential minerals play an important role in maintaining healthy human physiology. However, the presence of an excess amount of such essential metals can cause cell injury, which finally leads to severe life-threatening diseases. Chelating complexes can efficiently capture the targeted metal and can easily be excreted from the body. Commonly utilized metal chelators have major side effects including long-term damage to some organs, which has pointed out the need of less harmful biocompatible chelating agents. In this work, we have investigated the iron chelating property of curcumin through various spectroscopic tools by synthesizing and characterizing the iron-curcumin (Fe-Cur) complex. We have also investigated whether the synthesized materials are able to retain their antioxidant activity after the chelation of a substantial amount of metal ion. Our study unravels the improved antioxidant activity of the synthesized chelate complex. We further demonstrate that the proposed complex generates no significant reactive oxygen species (ROS) under dark conditions, which makes it a promising candidate for chelation therapy of iron toxicity. Femtosecond-resolved fluorescence studies further provide insight into the mechanism of activity of the new complex where electron transfer from ligand to metal has been observed prominently. Thus, the Fe-Cur complex has a potential to act as a dual activity medicine for excretion of toxic metal ions via chelation and as a therapeutic agent of oxidative stress caused by the metal ion as well.
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Affiliation(s)
- Saleh A. Ahmed
- Chemistry
Department, Faculty of Applied Science, Umm Al-Qura University, 21955 Makkah, Saudi Arabia
- Chemistry
Department, Faculty of Science, Assiut University, 71516 Assiut, Egypt
| | - Md. Nur Hasan
- Department
of Chemical, Biological and Macromolecular Sciences, S. N. Bose National Centre for Basic Sciences, Block JD, Sector-III, Salt Lake, Kolkata 700106, India
| | - Damayanti Bagchi
- Department
of Chemical, Biological and Macromolecular Sciences, S. N. Bose National Centre for Basic Sciences, Block JD, Sector-III, Salt Lake, Kolkata 700106, India
| | - Hatem M. Altass
- Chemistry
Department, Faculty of Applied Science, Umm Al-Qura University, 21955 Makkah, Saudi Arabia
| | - Moataz Morad
- Chemistry
Department, Faculty of Applied Science, Umm Al-Qura University, 21955 Makkah, Saudi Arabia
| | - Rabab S. Jassas
- Department
of Chemistry, Jamoum University College, Umm Al-Qura University, 21955 Makkah, Saudi Arabia
| | - Ahmed M. Hameed
- Chemistry
Department, Faculty of Applied Science, Umm Al-Qura University, 21955 Makkah, Saudi Arabia
| | - Jayita Patwari
- Department
of Chemical, Biological and Macromolecular Sciences, S. N. Bose National Centre for Basic Sciences, Block JD, Sector-III, Salt Lake, Kolkata 700106, India
| | - Hussain Alessa
- Chemistry
Department, Faculty of Applied Science, Umm Al-Qura University, 21955 Makkah, Saudi Arabia
| | - Ahmed Alharbi
- Chemistry
Department, Faculty of Applied Science, Umm Al-Qura University, 21955 Makkah, Saudi Arabia
| | - Samir Kumar Pal
- Department
of Chemical, Biological and Macromolecular Sciences, S. N. Bose National Centre for Basic Sciences, Block JD, Sector-III, Salt Lake, Kolkata 700106, India
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13
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Adhikari A, Biswas P, Mondal S, Das M, Darbar S, Hameed AM, Alharbi A, Ahmed SA, Sankar Bhattacharya S, Pal D, Kumar Pal S. A Smart Nanotherapeutic Agent for in vitro and in vivo Reversal of Heavy‐Metal‐Induced Causality: Key Information from Optical Spectroscopy. ChemMedChem 2019; 15:420-429. [DOI: 10.1002/cmdc.201900543] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 12/06/2019] [Indexed: 01/09/2023]
Affiliation(s)
- Aniruddha Adhikari
- Department of Chemical, Biological and Macromolecular SciencesSN Bose National Centre for Basic Sciences Block JD, Sector 3, Salt Lake Kolkata 700106 India
| | - Pritam Biswas
- Department of MicrobiologySt. Xavier's College 30, Mother Teresa Sarani Kolkata 700016 India
| | - Susmita Mondal
- Department of Chemical, Biological and Macromolecular SciencesSN Bose National Centre for Basic Sciences Block JD, Sector 3, Salt Lake Kolkata 700106 India
| | - Monojit Das
- Department of Zoology Uluberia CollegeUniversity of Calcutta Uluberia Howrah 711315 India
| | - Soumendra Darbar
- Research and Development DivisionDey's Medical Stores (Mfg.) Ltd. 62, Bondel Road, Ballygunge Kolkata 700019 India
| | - Ahmed M. Hameed
- Department of Chemistry Faculty of Applied SciencesUmm Al-Qura University 21955 Makkah Saudi Arabia
| | - Ahmed Alharbi
- Department of Chemistry Faculty of Applied SciencesUmm Al-Qura University 21955 Makkah Saudi Arabia
| | - Saleh A. Ahmed
- Department of Chemistry Faculty of Applied SciencesUmm Al-Qura University 21955 Makkah Saudi Arabia
- Chemistry Department, Faculty of ScienceAssiut University 71516 Assiut Egypt
| | | | - Debasish Pal
- Department of Zoology Uluberia CollegeUniversity of Calcutta Uluberia Howrah 711315 India
| | - Samir Kumar Pal
- Department of Chemical, Biological and Macromolecular SciencesSN Bose National Centre for Basic Sciences Block JD, Sector 3, Salt Lake Kolkata 700106 India
- Department of Zoology Uluberia CollegeUniversity of Calcutta Uluberia Howrah 711315 India
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14
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Bozdağ M, Eraslan G. The effect of diosmin against lead exposure in rats ‡. Naunyn Schmiedebergs Arch Pharmacol 2019; 393:639-649. [PMID: 31792554 DOI: 10.1007/s00210-019-01758-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 10/30/2019] [Indexed: 12/18/2022]
Abstract
In this study, the effect of diosmin against the adverse effects of lead exposure in rats was investigated. Wistar Albino race 40 male rats weighing 150-200 g 2-3 months were used. A total of 4 groups were assigned, one of which was control and the other 3 were trial groups. The rats in the control group were treated with dimethyl sulfoxide, which was used only as a vehicle in diosmin administration. Groups 2, 3, and 4 from the experimental group were given diosmin at a dose of 50 mg/kg.bw, lead acetate at the dose of 1000 ppm, lead acetate at the dose of 1000 ppm, and diosmin at a dose of 50 mg/kg.bw for 6 weeks, respectively. Application of lead acetate with drinking water and also diosmin was performed by oral catheter. At the end of the experimental period, blood was taken to dry and with heparin by puncture to the heart under light ether anesthesia. Following the blood samples, some organs of the rats (the liver, kidney, brain, heart, and testis) were removed. Some biochemical parameters (glucose, triglyceride, cholesterol, BUN, creatinine, uric acid, LDH, AST, ALT, ALP, total protein, albumin) were measured in serum. Some oxidative stress parameters in tissue samples and blood (MDA, NO, SOD, CAT, GSH-Px, GSH) were evaluated. Body and organ (the liver, kidney, brain, heart, and testis) weights were also evaluated at the end of the study. No significant change was observed in the parameters examined in the diosmin alone-treated group by comparison to control group. On the other hand, significant changes were found in the values of lead acetate-treated group comparing control group. It was observed that the values approached the values of the control group in the combination of lead and diosmin. Exposure to lead acetate at a dose of 1000 ppm for 6 weeks causes organ damage; however the diosmin application at a dose of 50 mg/kg.bw had a positive effect on the regression of tissue damage.
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Affiliation(s)
- Mehmet Bozdağ
- Department of Veterinary Pharmacology and Toxicology, Institute of Health Sciences, Erciyes University, Kayseri, Turkey
| | - Gökhan Eraslan
- Faculty of Veterinary Medicine, Department of Pharmacology and Toxicology, Erciyes University, Kayseri, Turkey.
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Al Abdel Hamid AAG. Exploring chelating features of simple diacid chelates with Hg(II), Cd(II), and Pb(II) ions: theoretical study by density functional theory. Struct Chem 2019. [DOI: 10.1007/s11224-019-01327-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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16
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Hsiao CY, Gresham C, Marshall MR. Treatment of lead and arsenic poisoning in anuric patients - a case report and narrative review of the literature. BMC Nephrol 2019; 20:374. [PMID: 31623560 PMCID: PMC6796459 DOI: 10.1186/s12882-019-1561-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 09/20/2019] [Indexed: 12/04/2022] Open
Abstract
Background Heavy metal poisoning can cause debilitating illness if left untreated, and its management in anuric patients poses challenges. Literature with which to guide clinical practice in this area is rather scattered. Case presentation We present a case of symptomatic lead and arsenic poisoning from use of Ayurvedic medicine in a 28-year-old man with end-stage kidney disease on chronic hemodialysis. We describe his treatment course with chelating agents and extracorporeal blood purification, and review the relevant literature to provide general guidance. Conclusion Cumulative clinical experience assists in identifying preferred chelators and modalities of extracorporeal blood purification when managing such patients. However, a larger body of real-world or clinical trial evidence is necessary to inform evidence-based guidelines for the management of heavy metal poisoning in anuric patients.
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Affiliation(s)
- Chun-Yuan Hsiao
- Department of Renal Medicine, Middlemore Hospital, Counties Manukau Health, Private Bag 93311, Otahuhu, Auckland, 1640, New Zealand
| | - Chip Gresham
- Department of Emergency Medicine, Middlemore Hospital, Auckland, 1640, New Zealand.,National Poisons Centre, Dunedin, 9054, New Zealand
| | - Mark R Marshall
- Department of Renal Medicine, Middlemore Hospital, Counties Manukau Health, Private Bag 93311, Otahuhu, Auckland, 1640, New Zealand. .,Faculty of Medical and Health Sciences, University of Auckland, Auckland, 1142, New Zealand. .,Baxter Healthcare (Asia Pacific) Pte Ltd, Singapore, 189673, Singapore.
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17
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Bhattacharya S. Probiotics against alleviation of lead toxicity: recent advances. Interdiscip Toxicol 2019; 12:89-92. [PMID: 32206029 PMCID: PMC7071839 DOI: 10.2478/intox-2019-0010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 10/03/2019] [Indexed: 02/06/2023] Open
Abstract
Lead is a toxic heavy metal and there is no specific, safe and efficacious therapeutic management of lead toxicity. Scientific literature reported that some probiotic microorganisms alleviated experimentally induced lead toxicity. The present review attempts to collate the experimental studies on probiotics with ameliorative effects. Literature survey revealed that four (4) types of probiotic microorganisms exhibited significant protection from lead toxicity in experimental pre-clinical studies. No clinical study with significant outcome was found in the literature. From the outcomes of the preclinical studies it appears that probiotics are prospective for alleviation and treatment of lead toxicity.
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Affiliation(s)
- Sanjib Bhattacharya
- West Bengal Medical Services Corporation Ltd., GN 29, Sector V, Salt Lake City, Kolkata 700091, West Bengal, India
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18
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Bjørklund G, Crisponi G, Nurchi VM, Cappai R, Buha Djordjevic A, Aaseth J. A Review on Coordination Properties of Thiol-Containing Chelating Agents Towards Mercury, Cadmium, and Lead. Molecules 2019; 24:E3247. [PMID: 31489907 PMCID: PMC6767255 DOI: 10.3390/molecules24183247] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 08/26/2019] [Accepted: 08/31/2019] [Indexed: 11/17/2022] Open
Abstract
The present article reviews the clinical use of thiol-based metal chelators in intoxications and overexposure with mercury (Hg), cadmium (Cd), and lead (Pb). Currently, very few commercially available pharmaceuticals can successfully reduce or prevent the toxicity of these metals. The metal chelator meso-2,3-dimercaptosuccinic acid (DMSA) is considerably less toxic than the classical agent British anti-Lewisite (BAL, 2,3-dimercaptopropanol) and is the recommended agent in poisonings with Pb and organic Hg. Its toxicity is also lower than that of DMPS (dimercaptopropane sulfonate), although DMPS is the recommended agent in acute poisonings with Hg salts. It is suggested that intracellular Cd deposits and cerebral deposits of inorganic Hg, to some extent, can be mobilized by a combination of antidotes, but clinical experience with such combinations are lacking. Alpha-lipoic acid (α-LA) has been suggested for toxic metal detoxification but is not considered a drug of choice in clinical practice. The molecular mechanisms and chemical equilibria of complex formation of the chelators with the metal ions Hg2+, Cd2+, and Pb2+ are reviewed since insight into these reactions can provide a basis for further development of therapeutics.
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Affiliation(s)
- Geir Bjørklund
- Council for Nutritional and Environmental Medicine, N-8610 Mo i Rana, Norway.
| | - Guido Crisponi
- Cittadella Universitaria, University of Cagliari, 09042 Cagliari, Italy.
| | - Valeria Marina Nurchi
- Department of Life and Environmental Sciences, University of Cagliari, 09042 Cagliari, Italy.
| | - Rosita Cappai
- Department of Life and Environmental Sciences, University of Cagliari, 09042 Cagliari, Italy.
| | - Aleksandra Buha Djordjevic
- Department of Toxicology "Akademik Danilo Soldatović", Faculty of Pharmacy, University of Belgrade, 11000 Belgrade, Serbia.
| | - Jan Aaseth
- Research Department, Innlandet Hospital, N-2380 Brumunddal, Norway.
- Inland Norway University of Applied Sciences, N-2411 Elverum, Norway.
- IM Sechenov First Moscow State Medical University (Sechenov University), 119146 Moscow, Russia.
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19
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Yin Y, Yue X, Zhang D, Zhang P, Abdallah A, Yin Y, Cai Y, Li Y. Study of Bioaccumulation, Hematological Parameters, and Antioxidant Responses of Carassius auratus gibelio Exposed to Dietary Lead and Bacillus subtilis. Biol Trace Elem Res 2019; 189:233-240. [PMID: 30032402 DOI: 10.1007/s12011-018-1447-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 07/13/2018] [Indexed: 11/29/2022]
Abstract
Lead (Pb) is one of the most ubiquitous and toxic elements in the aquatic environment. Bacillus subtilis (B. subtilis) is a widely used probiotic in aquaculture. The aim of this study was to explore the toxic effects on bioaccumulation, hematological parameters, and antioxidant responses of Carassius auratus gibelio (C. gibelio) exposed to dietary lead at 0, 120, and 240 mg/kg and/or B. subtilis at 109 cfu/g. At 15 and 30 days, the fish were sampled and bioaccumulation, hematological parameters, and antioxidant responses were assessed. The result showed that B. subtilis administration can provide a significant protection against lead toxicity by reducing lead bioaccumulation in tissues, increasing the antioxidant enzymes activity, recovering δ-aminolevulinic acid dehydratase activity and optimizing the hematological parameters. Our results suggested that administration of B. subtilis (109 cfu/g) has the potential to combat dietary lead toxicity in C. gibelio.
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Affiliation(s)
- Yulin Yin
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
- Ministry of Education Laboratory of Animal Production and Quality Security, Jilin Agricultural University, Changchun, 130118, China
| | - Xinyan Yue
- Department of Clinical Laboratory, Attached Hospital of Changchun University of Traditional Chinese Medicine, Changchun, 130021, China
| | - Dongming Zhang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
- Ministry of Education Laboratory of Animal Production and Quality Security, Jilin Agricultural University, Changchun, 130118, China
| | - Peijun Zhang
- Health Monitoring and Inspection Center of Jilin Province, Changchun, 130062, China
| | - Abedin Abdallah
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
- Ministry of Education Laboratory of Animal Production and Quality Security, Jilin Agricultural University, Changchun, 130118, China
| | - Yuwei Yin
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
- Ministry of Education Laboratory of Animal Production and Quality Security, Jilin Agricultural University, Changchun, 130118, China
| | - Yanan Cai
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
- Ministry of Education Laboratory of Animal Production and Quality Security, Jilin Agricultural University, Changchun, 130118, China
| | - Yuehong Li
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China.
- Ministry of Education Laboratory of Animal Production and Quality Security, Jilin Agricultural University, Changchun, 130118, China.
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20
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Zhai Q, Liu Y, Wang C, Qu D, Zhao J, Zhang H, Tian F, Chen W. Lactobacillus plantarum CCFM8661 modulates bile acid enterohepatic circulation and increases lead excretion in mice. Food Funct 2019; 10:1455-1464. [DOI: 10.1039/c8fo02554a] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Probiotics modulate bile acid enterohepatic circulation and increases lead excretion.
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Affiliation(s)
- Qixiao Zhai
- State Key Laboratory of Food Science and Technology
- Jiangnan University
- Wuxi
- China
- School of Food Science and Technology
| | - Yang Liu
- State Key Laboratory of Food Science and Technology
- Jiangnan University
- Wuxi
- China
- School of Food Science and Technology
| | - Chen Wang
- State Key Laboratory of Food Science and Technology
- Jiangnan University
- Wuxi
- China
- School of Food Science and Technology
| | - Dingwu Qu
- State Key Laboratory of Food Science and Technology
- Jiangnan University
- Wuxi
- China
- School of Food Science and Technology
| | - Jianxin Zhao
- State Key Laboratory of Food Science and Technology
- Jiangnan University
- Wuxi
- China
- School of Food Science and Technology
| | - Hao Zhang
- State Key Laboratory of Food Science and Technology
- Jiangnan University
- Wuxi
- China
- School of Food Science and Technology
| | - Fengwei Tian
- State Key Laboratory of Food Science and Technology
- Jiangnan University
- Wuxi
- China
- School of Food Science and Technology
| | - Wei Chen
- State Key Laboratory of Food Science and Technology
- Jiangnan University
- Wuxi
- China
- School of Food Science and Technology
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21
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He B, Shen XF, Nie J, Wang XL, Liu FM, Yin W, Hou CJ, Huo DQ, Fa HB. Electrochemical sensor using graphene/Fe3O4 nanosheets functionalized with garlic extract for the detection of lead ion. J Solid State Electrochem 2018. [DOI: 10.1007/s10008-018-4041-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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22
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Rana MN, Tangpong J, Rahman MM. Toxicodynamics of Lead, Cadmium, Mercury and Arsenic- induced kidney toxicity and treatment strategy: A mini review. Toxicol Rep 2018; 5:704-713. [PMID: 29992094 PMCID: PMC6035907 DOI: 10.1016/j.toxrep.2018.05.012] [Citation(s) in RCA: 129] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 04/13/2018] [Accepted: 05/21/2018] [Indexed: 12/18/2022] Open
Abstract
Environmental pollution has become a concerning matter to human beings. Flint water crisis in the USA pointed out that pollution by heavy metal is getting worse day by day, predominantly by Lead, Cadmium, Mercury and Arsenic. Despite of not having any biological role in flora and fauna, they exhibit detrimental effect following exposure (acute or chronic). Even at low dose, they affect brain, kidney and heart. Oxidative stress has been termed as cause and effect in heavy metal-induced kidney toxicity. In treatment strategy, different chelating agent, vitamins and minerals are included, though chelating agents has been showed different fatal drawbacks. Interestingly, plants and plants derived compounds had shown possible effectiveness against heavy metals induced kidney toxicity. This review will provide detail information on toxicodynamics of Pb, Cd, Hg and As, treatment strategy along with the possible beneficiary role of plant derived compound to protect kidney.
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Affiliation(s)
- Mohammad Nasiruddin Rana
- Biomedical Sciences, School of Allied Health Sciences, Walailak University, Thasala, Nakhon Si Thammarat, Thailand
- Department of Pharmacy, Faculty of Science and Engineering, International Islamic University Chittagong, Kumira, Chittagong-4318, Bangladesh
| | - Jitbanjong Tangpong
- Biomedical Sciences, School of Allied Health Sciences, Walailak University, Thasala, Nakhon Si Thammarat, Thailand
| | - Md. Masudur Rahman
- Department of Pharmacy, Faculty of Science and Engineering, International Islamic University Chittagong, Kumira, Chittagong-4318, Bangladesh
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23
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Al Khabbas MH, Ata SA, Abu-Dari KI, Tutunji MF, Mubarak MS. Synthesis and characterization of new 1-hydroxy-2-pyridinethione derivatives: Their lead complexes and efficacy in the treatment of acute lead poisoning in rats. J Trace Elem Med Biol 2017; 44:209-217. [PMID: 28965578 DOI: 10.1016/j.jtemb.2017.08.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 07/27/2017] [Accepted: 08/02/2017] [Indexed: 11/30/2022]
Abstract
A number of new mono- and dihydroxypyridinethione ligands have been synthesized via reaction of dimethylamine and amino acid esters with the active amide obtained from the reaction of 1-hydroxy-2-pyridinethione-4-carboxylic acid (1) and 1,1'-carbonyldiimidazole in DMF. Moreover, the lead complexes of these new ligands were also prepared. Structures of the newly synthesized compounds have been confirmed by different spectroscopic methods such as IR, 1H NMR, and 13C NMR, and by elemental analysis. The effect of these synthesized ligands on the excretion of lead, iron, and zinc, and their distribution in kidneys, liver, and bones in acutely intoxicated rats was investigated and results, for lead, were compared with those of the known drug meso-2,3-dimercaptosuccinic acid (DMSA). Results obtained revealed that compound 5 exhibits remarkable ability in total fecal and urinary excretion of lead and was superior to DMSA. In addition, results show that the concentration of lead in soft tissues and bones was lower in rats treated with HTPL than those treated with DMSA. Furthermore, the concentration of lead in liver tissues obtained from sub-chronic lead-intoxicated rats treated with HTPL was lower than those treated with DMSA and calcium disodium ethylenediaminetetraacetic acid (CaNa2EDTA).
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Affiliation(s)
- Manal H Al Khabbas
- Chemistry Department, Faculty of Science, University of Hail, PO Box 2440, Saudi Arabia
| | - Samah A Ata
- Pharmacy Department, Faculty of Pharmacy, Al-Zaytoonah University of Jordan, 130, Amman 11733, Jordan
| | - Kamal I Abu-Dari
- Department of Chemistry, Faculty of Science, The University of Jordan, Amman 11942, Jordan.
| | - Maha F Tutunji
- Department of Chemistry, Faculty of Science, The University of Jordan, Amman 11942, Jordan
| | - Mohammad S Mubarak
- Department of Chemistry, Faculty of Science, The University of Jordan, Amman 11942, Jordan.
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24
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Bjørklund G, Mutter J, Aaseth J. Metal chelators and neurotoxicity: lead, mercury, and arsenic. Arch Toxicol 2017; 91:3787-3797. [DOI: 10.1007/s00204-017-2100-0] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 10/19/2017] [Indexed: 01/07/2023]
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25
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Orr SE, Bridges CC. Chronic Kidney Disease and Exposure to Nephrotoxic Metals. Int J Mol Sci 2017; 18:ijms18051039. [PMID: 28498320 PMCID: PMC5454951 DOI: 10.3390/ijms18051039] [Citation(s) in RCA: 200] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 04/26/2017] [Indexed: 12/26/2022] Open
Abstract
Chronic kidney disease (CKD) is a common progressive disease that is typically characterized by the permanent loss of functional nephrons. As injured nephrons become sclerotic and die, the remaining healthy nephrons undergo numerous structural, molecular, and functional changes in an attempt to compensate for the loss of diseased nephrons. These compensatory changes enable the kidney to maintain fluid and solute homeostasis until approximately 75% of nephrons are lost. As CKD continues to progress, glomerular filtration rate decreases, and remaining nephrons are unable to effectively eliminate metabolic wastes and environmental toxicants from the body. This inability may enhance mortality and/or morbidity of an individual. Environmental toxicants of particular concern are arsenic, cadmium, lead, and mercury. Since these metals are present throughout the environment and exposure to one or more of these metals is unavoidable, it is important that the way in which these metals are handled by target organs in normal and disease states is understood completely.
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Affiliation(s)
- Sarah E Orr
- Mercer University School of Medicine, Division of Basic Medical Sciences, 1550 College St., Macon, GA 31207, USA.
| | - Christy C Bridges
- Mercer University School of Medicine, Division of Basic Medical Sciences, 1550 College St., Macon, GA 31207, USA.
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26
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Oliveira C, Joshee L, George H, Nijhara S, Bridges C. Oral exposure of pregnant rats to toxic doses of methylmercury alters fetal accumulation. Reprod Toxicol 2017; 69:265-275. [PMID: 28341569 DOI: 10.1016/j.reprotox.2017.03.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 01/30/2017] [Accepted: 03/20/2017] [Indexed: 12/23/2022]
Abstract
Methylmercury (CH3Hg+) is an environmental toxicant that may lead to significant pathologies in exposed individuals. The current study assessed the disposition and toxicological effects of 2.5 or 7.5mgkg-1 CH3Hg+, conjugated to cysteine (Cys; Cys-S-CH3Hg) and administered orally to pregnant and non-pregnant Wistar and TR- rats. Rats were euthanized on gestational day 20 and the content of mercury in each fetus, amniotic sac, and placenta was determined. The brain, liver, and kidneys were removed from each fetus for estimation of mercury content. From the dams, a sample of blood, kidneys, liver, and brain were removed at the time of euthanasia. The findings from this study indicate that pregnancy leads to significant changes in the handling of mercuric ions, particularly in the liver. Furthermore, there are significant differences in the handling of non-nephrotoxic and nephrotoxic doses of Cys-S-CH3Hg by maternal and fetal organs.
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Affiliation(s)
- Cláudia Oliveira
- Division of Basic Medical Sciences, Mercer University School of Medicine, Macon, GA, USA
| | - Lucy Joshee
- Division of Basic Medical Sciences, Mercer University School of Medicine, Macon, GA, USA
| | - Hannah George
- Division of Basic Medical Sciences, Mercer University School of Medicine, Macon, GA, USA
| | - Sanya Nijhara
- Division of Basic Medical Sciences, Mercer University School of Medicine, Macon, GA, USA
| | - Christy Bridges
- Division of Basic Medical Sciences, Mercer University School of Medicine, Macon, GA, USA.
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Bridges CC, Zalups RK. The aging kidney and the nephrotoxic effects of mercury. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART B, CRITICAL REVIEWS 2017; 20:55-80. [PMID: 28339347 PMCID: PMC6088787 DOI: 10.1080/10937404.2016.1243501] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Owing to advances in modern medicine, life expectancies are lengthening and leading to an increase in the population of older individuals. The aging process leads to significant alterations in many organ systems, with the kidney being particularly susceptible to age-related changes. Within the kidney, aging leads to ultrastructural changes such as glomerular and tubular hypertrophy, glomerulosclerosis, and tubulointerstitial fibrosis, which may compromise renal plasma flow (RPF) and glomerular filtration rate (GFR). These alterations may reduce the functional reserve of the kidneys, making them more susceptible to pathological events when challenged or stressed, such as following exposure to nephrotoxicants. An important and prevalent environmental toxicant that induces nephrotoxic effects is mercury (Hg). Since exposure of normal kidneys to mercuric ions might induce glomerular and tubular injury, aged kidneys, which may not be functioning at full capacity, may be more sensitive to the effects of Hg than normal kidneys. Age-related renal changes and the effects of Hg in the kidney have been characterized separately. However, little is known regarding the influence of nephrotoxicants, such as Hg, on aged kidneys. The purpose of this review was to summarize known findings related to exposure of aged and diseased kidneys to the environmentally relevant nephrotoxicant Hg.
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Affiliation(s)
- Christy C Bridges
- a Mercer University School of Medicine , Division of Basic Medical Sciences , Macon , Georgia , USA
| | - Rudolfs K Zalups
- a Mercer University School of Medicine , Division of Basic Medical Sciences , Macon , Georgia , USA
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28
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van Eijkeren JCH, Olie JDN, Bradberry SM, Vale JA, de Vries I, Meulenbelt J, Hunault CC. Modelling dimercaptosuccinic acid (DMSA) plasma kinetics in humans. Clin Toxicol (Phila) 2016; 54:833-839. [DOI: 10.1080/15563650.2016.1221508] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - J. Daniël N. Olie
- National Poisons Information Center, University Medical Center Utrecht, Utrecht, The Netherlands
- Department of Pharmacology and Toxicology, University of Nijmegen, Nijmegen, The Netherlands
| | - Sally M. Bradberry
- National Poisons Information Service (Birmingham Unit), City Hospital, Birmingham, UK
- School of Biosciences, University of Birmingham, Birmingham, UK
| | - J. Allister Vale
- National Poisons Information Service (Birmingham Unit), City Hospital, Birmingham, UK
- School of Biosciences, University of Birmingham, Birmingham, UK
| | - Irma de Vries
- National Poisons Information Center, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Jan Meulenbelt
- National Poisons Information Center, University Medical Center Utrecht, Utrecht, The Netherlands
- Department of Intensive Care Medicine, University Medical Center Utrecht, Utrecht, The Netherlands
- Institute for Risk Assessment Sciences (IRAS), Utrecht University, Utrecht, The Netherlands
| | - Claudine C. Hunault
- National Poisons Information Center, University Medical Center Utrecht, Utrecht, The Netherlands
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29
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Belyaev I, Dean A, Eger H, Hubmann G, Jandrisovits R, Kern M, Kundi M, Moshammer H, Lercher P, Müller K, Oberfeld G, Ohnsorge P, Pelzmann P, Scheingraber C, Thill R. EUROPAEM EMF Guideline 2016 for the prevention, diagnosis and treatment of EMF-related health problems and illnesses. REVIEWS ON ENVIRONMENTAL HEALTH 2016; 31:363-397. [PMID: 27454111 DOI: 10.1515/reveh-2016-0011] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 05/29/2016] [Indexed: 06/06/2023]
Abstract
Chronic diseases and illnesses associated with non-specific symptoms are on the rise. In addition to chronic stress in social and work environments, physical and chemical exposures at home, at work, and during leisure activities are causal or contributing environmental stressors that deserve attention by the general practitioner as well as by all other members of the health care community. It seems necessary now to take "new exposures" like electromagnetic fields (EMF) into account. Physicians are increasingly confronted with health problems from unidentified causes. Studies, empirical observations, and patient reports clearly indicate interactions between EMF exposure and health problems. Individual susceptibility and environmental factors are frequently neglected. New wireless technologies and applications have been introduced without any certainty about their health effects, raising new challenges for medicine and society. For instance, the issue of so-called non-thermal effects and potential long-term effects of low-dose exposure were scarcely investigated prior to the introduction of these technologies. Common electromagnetic field or EMF sources: Radio-frequency radiation (RF) (3 MHz to 300 GHz) is emitted from radio and TV broadcast antennas, Wi-Fi access points, routers, and clients (e.g. smartphones, tablets), cordless and mobile phones including their base stations, and Bluetooth devices. Extremely low frequency electric (ELF EF) and magnetic fields (ELF MF) (3 Hz to 3 kHz) are emitted from electrical wiring, lamps, and appliances. Very low frequency electric (VLF EF) and magnetic fields (VLF MF) (3 kHz to 3 MHz) are emitted, due to harmonic voltage and current distortions, from electrical wiring, lamps (e.g. compact fluorescent lamps), and electronic devices. On the one hand, there is strong evidence that long-term exposure to certain EMFs is a risk factor for diseases such as certain cancers, Alzheimer's disease, and male infertility. On the other hand, the emerging electromagnetic hypersensitivity (EHS) is more and more recognized by health authorities, disability administrators and case workers, politicians, as well as courts of law. We recommend treating EHS clinically as part of the group of chronic multisystem illnesses (CMI), but still recognizing that the underlying cause remains the environment. In the beginning, EHS symptoms occur only occasionally, but over time they may increase in frequency and severity. Common EHS symptoms include headaches, concentration difficulties, sleep problems, depression, a lack of energy, fatigue, and flu-like symptoms. A comprehensive medical history, which should include all symptoms and their occurrences in spatial and temporal terms and in the context of EMF exposures, is the key to making the diagnosis. The EMF exposure is usually assessed by EMF measurements at home and at work. Certain types of EMF exposure can be assessed by asking about common EMF sources. It is very important to take the individual susceptibility into account. The primary method of treatment should mainly focus on the prevention or reduction of EMF exposure, that is, reducing or eliminating all sources of high EMF exposure at home and at the workplace. The reduction of EMF exposure should also be extended to public spaces such as schools, hospitals, public transport, and libraries to enable persons with EHS an unhindered use (accessibility measure). If a detrimental EMF exposure is reduced sufficiently, the body has a chance to recover and EHS symptoms will be reduced or even disappear. Many examples have shown that such measures can prove effective. To increase the effectiveness of the treatment, the broad range of other environmental factors that contribute to the total body burden should also be addressed. Anything that supports homeostasis will increase a person's resilience against disease and thus against the adverse effects of EMF exposure. There is increasing evidence that EMF exposure has a major impact on the oxidative and nitrosative regulation capacity in affected individuals. This concept also may explain why the level of susceptibility to EMF can change and why the range of symptoms reported in the context of EMF exposures is so large. Based on our current understanding, a treatment approach that minimizes the adverse effects of peroxynitrite - as has been increasingly used in the treatment of multisystem illnesses - works best. This EMF Guideline gives an overview of the current knowledge regarding EMF-related health risks and provides recommendations for the diagnosis, treatment and accessibility measures of EHS to improve and restore individual health outcomes as well as for the development of strategies for prevention.
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Kukongviriyapan U, Apaijit K, Kukongviriyapan V. Oxidative Stress and Cardiovascular Dysfunction Associated with Cadmium Exposure: Beneficial Effects of Curcumin and Tetrahydrocurcumin. TOHOKU J EXP MED 2016; 239:25-38. [PMID: 27151191 DOI: 10.1620/tjem.239.25] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Cadmium (Cd) is a non-essential heavy metal with high toxicity potential. Humans are exposed to Cd present in diet, polluted air, and cigarette smoke. Cd exposure has been associated with increased risk of chronic diseases, including hypertension, atherosclerosis, diabetes, and nephropathy, all of which could be attributable to dysfunctional endothelial and smooth muscle cells. Cd toxicity is correlated with increased reactive oxygen formation and depletion of antioxidants, resulting in an oxidative stress. Chelation of Cd has proved useful in the removal of the Cd burden. However, several chelating agents cause side effects in clinical usage. Recent studies have shown that the antioxidant compounds curcumin and tetrahydrocurcumin can alleviate vascular dysfunction and high blood pressure caused by Cd toxicity. In chronic Cd exposure, these antioxidants protect vascular endothelium by increasing nitric oxide (NO•) bioavailability and improving vascular function. Antioxidant activity against Cd intoxication results directly and/or indirectly through free radical scavenging, metal chelation, enhanced expression of the antioxidant defense system, regulation of inflammatory enzymes, increase in NO• bioavailability, and reduction of gastrointestinal absorption and tissue Cd accumulation. This review summarizes current knowledge of Cd-induced oxidative stress and cardiovascular dysfunction and a possible protective effect conferred by the antioxidants curcumin and tetrahydrocurcumin.
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31
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Mazlo J, Ngu-Schwemlein M. A Study of the Complexation of Mercury(II) with Dicysteinyl Tetrapeptides by Electrospray Ionization Mass Spectrometry. J Vis Exp 2016. [PMID: 26780606 DOI: 10.3791/53536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
In this study we evaluated a method for the characterization of complexes, formed in different relative ratios of mercury(II) to dicysteinyl tetrapeptide, by electrospray ionization orbitrap mass spectrometry. This strategy is based on previous successful characterization of mercury-dicysteinyl complexes involving tripeptides by utilizing mass spectrometry among other techniques. Mercury(II) chloride and a dicysteinyl tetrapeptide were incubated in a degassed buffered medium at varying stoichiometric ratios. The complexes formed were subsequently analyzed on an electrospray mass spectrometer consisting of a hybrid linear ion- and orbi- trap mass analyzer. The electrospray ionization mass spectrometry (ESI-MS) spectra were acquired in the positive mode and the observed peaks were then analyzed for distinct mercury isotopic distribution patterns and associated monoisotopic peak. This work demonstrates that an accurate stoichiometry of mercury and peptide in the complexes formed under specified electrospray ionization conditions can be determined by using high resolution ESI MS based on distinct mercury isotopic distribution patterns.
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Affiliation(s)
- Johanna Mazlo
- Department of Chemistry and Biochemistry, University of North Carolina at Greensboro
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32
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Li Y, Liu K, Shen J, Liu Y. Wheat bran intake can attenuate chronic cadmium toxicity in mice gut microbiota. Food Funct 2016; 7:3524-30. [DOI: 10.1039/c6fo00233a] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Environmental exposure to pollutants such as heavy metals is responsible for various altered physiological functions that are detrimental to health.
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Affiliation(s)
- Yuhui Li
- Department of Biological and Environmental Engineering
- Hefei University
- China
| | - Kaiyong Liu
- School of Public Health
- Anhui Medical University
- China
| | - Jie Shen
- School of Public Health
- Anhui Medical University
- China
| | - Yehao Liu
- School of Public Health
- Anhui Medical University
- China
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33
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Thiol-Functionalized Mesoporous Silica for Effective Trap of Mercury in Rats. JOURNAL OF NANOMATERIALS 2016. [DOI: 10.1155/2016/9758264] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The chance of exposure to heavy metal for human being rises severely today due to the increasing water contamination and air pollution. Here, we prepared a series of thiol-functionalized mesoporous silica as oral formulation for the prevention and treatment of heavy metal poisoning. The successful incorporation of thiol was verified by the FTIR spectra. SBA15-SH-10 was used for the study as it is of uniform mesopores and fine water dispersibility. In simulated gastrointestinal fluid, the thiol-functionalized mesoporous silica can selectively capture heavy metal, showing a very high affinity for inorganic mercury (II). The blood and urine mercury levels of rats fed with a diet containing Hg (II) and material were significantly lower than those of rats fed with the metal-rich diet only. On the contrary, the mercury content in fecal excretion of the treatment group increased more than twice as much as that of the control group. This result indicated that SBA15-SH-10 could effectively remove mercury (II)in vivoand the mercury loaded on SBA15-SH-10 would be excreted out. Hence, SBA15-SH-10 has potential application in preventing and treating heavy metal poisoningviadigestive system.
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34
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Niehoff AC, Bauer OB, Kröger S, Fingerhut S, Schulz J, Meyer S, Sperling M, Jeibmann A, Schwerdtle T, Karst U. Quantitative Bioimaging to Investigate the Uptake of Mercury Species in Drosophila melanogaster. Anal Chem 2015; 87:10392-6. [DOI: 10.1021/acs.analchem.5b02500] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Ann-Christin Niehoff
- University of Münster, Institute of Inorganic
and Analytical Chemistry, Corrensstrasse 28/30, 48149 Münster, Germany
- NRW
Graduate School of Chemistry, University of Münster, 48149 Münster, Germany
| | - Oliver Bolle Bauer
- University of Münster, Institute of Inorganic
and Analytical Chemistry, Corrensstrasse 28/30, 48149 Münster, Germany
| | - Sabrina Kröger
- University of Münster, Institute of Inorganic
and Analytical Chemistry, Corrensstrasse 28/30, 48149 Münster, Germany
| | - Stefanie Fingerhut
- University of Münster, Institute of Inorganic
and Analytical Chemistry, Corrensstrasse 28/30, 48149 Münster, Germany
| | - Jacqueline Schulz
- University Hospital Münster, Institute of Neuropathology, Pottkamp 2, 48149 Münster, Germany
| | - Sören Meyer
- NRW
Graduate School of Chemistry, University of Münster, 48149 Münster, Germany
- University of Potsdam, Institute of Nutritional Science, Arthur-Scheunert-Allee 114-116, 14558 Nuthetal, Germany
| | - Michael Sperling
- University of Münster, Institute of Inorganic
and Analytical Chemistry, Corrensstrasse 28/30, 48149 Münster, Germany
| | - Astrid Jeibmann
- University Hospital Münster, Institute of Neuropathology, Pottkamp 2, 48149 Münster, Germany
| | - Tanja Schwerdtle
- University of Potsdam, Institute of Nutritional Science, Arthur-Scheunert-Allee 114-116, 14558 Nuthetal, Germany
| | - Uwe Karst
- University of Münster, Institute of Inorganic
and Analytical Chemistry, Corrensstrasse 28/30, 48149 Münster, Germany
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35
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Zhang Y, Li L, Huang H, Xu L, Li Z, Bai Y, Liu H. Binding constant determination of uranyl-citrate complex by ACE using a multi-injection method. Electrophoresis 2015; 36:1033-9. [DOI: 10.1002/elps.201400532] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Revised: 01/12/2015] [Accepted: 01/12/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Yiding Zhang
- Beijing; National Laboratory for Molecular Sciences; Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; Institute of Analytical Chemistry; College of Chemistry and Molecular Engineering; Peking University; Beijing P. R. China
| | - Linnan Li
- Beijing; National Laboratory for Molecular Sciences; Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; Institute of Analytical Chemistry; College of Chemistry and Molecular Engineering; Peking University; Beijing P. R. China
| | - Hexiang Huang
- Sichuan Institute of Materials and Technology; Mianyang P. R. China
| | - Linnan Xu
- Beijing; National Laboratory for Molecular Sciences; Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; Institute of Analytical Chemistry; College of Chemistry and Molecular Engineering; Peking University; Beijing P. R. China
| | - Ze Li
- Beijing; National Laboratory for Molecular Sciences; Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; Institute of Analytical Chemistry; College of Chemistry and Molecular Engineering; Peking University; Beijing P. R. China
| | - Yu Bai
- Beijing; National Laboratory for Molecular Sciences; Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; Institute of Analytical Chemistry; College of Chemistry and Molecular Engineering; Peking University; Beijing P. R. China
| | - Huwei Liu
- Beijing; National Laboratory for Molecular Sciences; Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; Institute of Analytical Chemistry; College of Chemistry and Molecular Engineering; Peking University; Beijing P. R. China
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36
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Zhai Q, Narbad A, Chen W. Dietary strategies for the treatment of cadmium and lead toxicity. Nutrients 2015; 7:552-71. [PMID: 25594439 PMCID: PMC4303853 DOI: 10.3390/nu7010552] [Citation(s) in RCA: 154] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Accepted: 01/04/2015] [Indexed: 12/13/2022] Open
Abstract
Cadmium (Cd) and lead (Pb) are toxic heavy metals that cause adverse health effects in humans and animals. Chelation therapy, the conventional treatment for heavy metal toxicity, is reported to have a number of safety and efficacy issues. Recent studies have shown that dietary supplements play important roles in protecting against Cd and Pb toxicity. This paper reviews the evidence for protective effects of essential metals, vitamins, edible plants, phytochemicals, probiotics and other dietary supplements against Cd and Pb toxicity and describes the proposed possible mechanisms. Based on these findings, dietary strategies are recommended for people at risk of Cd and Pb exposure. The application of these strategies is advantageous for both the prevention and alleviation of Cd and Pb toxicity, as such supplements can be added easily and affordably to the daily diet and are expected to have very few side effects compared to the chelation therapy.
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Affiliation(s)
- Qixiao Zhai
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, 1800 LiHu Road, Wuxi 214122, China.
| | - Arjan Narbad
- Gut Health and Food Safety Programme, Institute of Food Research, Norwich NR4 7UA, UK.
| | - Wei Chen
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, 1800 LiHu Road, Wuxi 214122, China.
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37
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Belyaev I, Dean A, Eger H, Hubmann G, Jandrisovits R, Johansson O, Kern M, Kundi M, Lercher P, Mosgöller W, Moshammer H, Müller K, Oberfeld G, Ohnsorge P, Pelzmann P, Scheingraber C, Thill R. EUROPAEM EMF Guideline 2015 for the prevention, diagnosis and treatment of EMF-related health problems and illnesses. REVIEWS ON ENVIRONMENTAL HEALTH 2015; 30:337-371. [PMID: 26613329 DOI: 10.1515/reveh-2015-0033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Accepted: 10/13/2015] [Indexed: 06/05/2023]
Abstract
Chronic diseases and illnesses associated with unspecific symptoms are on the rise. In addition to chronic stress in social and work environments, physical and chemical exposures at home, at work, and during leisure activities are causal or contributing environmental stressors that deserve attention by the general practitioner as well as by all other members of the health care community. It seems certainly necessary now to take "new exposures" like electromagnetic field (EMF) into account. Physicians are increasingly confronted with health problems from unidentified causes. Studies, empirical observations, and patient reports clearly indicate interactions between EMF exposure and health problems. Individual susceptibility and environmental factors are frequently neglected. New wireless technologies and applications have been introduced without any certainty about their health effects, raising new challenges for medicine and society. For instance, the issue of so-called non-thermal effects and potential long-term effects of low-dose exposure were scarcely investigated prior to the introduction of these technologies. Common EMF sources include Wi-Fi access points, routers and clients, cordless and mobile phones including their base stations, Bluetooth devices, ELF magnetic fields from net currents, ELF electric fields from electric lamps and wiring close to the bed and office desk. On the one hand, there is strong evidence that long-term-exposure to certain EMF exposures is a risk factor for diseases such as certain cancers, Alzheimer's disease and male infertility. On the other hand, the emerging electromagnetic hypersensitivity (EHS) is more and more recognized by health authorities, disability administrators and case workers, politicians, as well as courts of law. We recommend treating EHS clinically as part of the group of chronic multisystem illnesses (CMI) leading to a functional impairment (EHS), but still recognizing that the underlying cause remains the environment. In the beginning, EHS symptoms often occur only occasionally, but over time they may increase in frequency and severity. Common EHS symptoms include headaches, concentration difficulties, sleeping problems, depression, lack of energy, fatigue and flu-like symptoms. A comprehensive medical history, which should include all symptoms and their occurrences in spatial and temporal terms and in the context of EMF exposures, is the key to the diagnosis. The EMF exposure can be assessed by asking for typical sources like Wi-Fi access points, routers and clients, cordless and mobile phones and measurements at home and at work. It is very important to take the individual susceptibility into account. The primary method of treatment should mainly focus on the prevention or reduction of EMF exposure, that is, reducing or eliminating all sources of EMF at home and in the workplace. The reduction of EMF exposure should also be extended to public spaces such as schools, hospitals, public transport, and libraries to enable persons with EHS an unhindered use (accessibility measure). If a detrimental EMF exposure is reduced sufficiently, the body has a chance to recover and EHS symptoms will be reduced or even disappear. Many examples have shown that such measures can prove effective. Also the survival rate of children with leukemia depends on ELF magnetic field exposure at home. To increase the effectiveness of the treatment, the broad range of other environmental factors that contribute to the total body burden should also be addressed. Anything that supports a balanced homeostasis will increase a person's resilience against disease and thus against the adverse effects of EMF exposure. There is increasing evidence that EMF exposure has a major impact on the oxidative and nitrosative regulation capacity in affected individuals. This concept also may explain why the level of susceptibility to EMF can change and why the number of symptoms reported in the context of EMF exposures is so large. Based on our current understanding, a treatment approach that minimizes the adverse effects of peroxynitrite - as has been increasingly used in the treatment of multisystem disorders - works best. This EMF Guideline gives an overview of the current knowledge regarding EMF-related health risks and provides concepts for the diagnosis and treatment and accessibility measures of EHS to improve and restore individual health outcomes as well as for the development of strategies for prevention.
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Cao Y, Skaug MA, Andersen O, Aaseth J. Chelation therapy in intoxications with mercury, lead and copper. J Trace Elem Med Biol 2015; 31:188-92. [PMID: 24894443 DOI: 10.1016/j.jtemb.2014.04.010] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Revised: 04/22/2014] [Accepted: 04/23/2014] [Indexed: 11/15/2022]
Abstract
In the present review we provide an update of the appropriate use of chelating agents in the treatment of intoxications with compounds of mercury, lead and copper. The relatively new chelators meso-2,3-dimercaptosuccinic acid (DMSA) and 2,3-dimercapto-propanesulphonate (DMPS) can effectively mobilize deposits of mercury as well as of lead into the urine. These drugs can be administered orally and have relatively low toxicity compared to the classical antidote dimercaptopropanol (BAL). d-Penicillamine has been widely used in copper overload, although 2,3-dimercaptosuccinic acid or tetrathiomolybdate may be more suitable alternatives today. In copper-toxicity, a free radical scavenger might be recommended as adjuvant to the chelator therapy.
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Affiliation(s)
- Yang Cao
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Marit Aralt Skaug
- Faculty of Public Health, Hedmark University College, Elverum, Norway.
| | - Ole Andersen
- Department of Science, Systems and Models, Roskilde University, Roskilde, Denmark
| | - Jan Aaseth
- Innlandet Hospital Trust, Kongsvinger Hospital Division, Kongsvinger, Norway
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Abstract
INTRODUCTION Mercuric chloride poisoning is rare yet potentially life-threatening. We report a case of poisoning with a potentially significant amount of mercuric chloride which responded to aggressive management. CASE REPORT A 19-year-old female presented to the Emergency Department with nausea, abdominal discomfort, vomiting of blood-stained fluid, and diarrhea following suicidal ingestion of 2-4 g of mercuric chloride powder. An abdominal radiograph showed radio-opaque material within the gastric antrum and the patient's initial blood mercury concentration was 17.9 μmol/L (or 3.58 mg/L) at 3 h post-ingestion. Given the potential toxicity of inorganic mercury, the patient was admitted to the intensive care unit and chelation with dimercaprol was undertaken. Further clinical effects included mild hemodynamic instability, acidosis, hypokalemia, leukocytosis, and fever. The patient's symptoms began to improve 48 h after admission and resolved fully within a week. DISCUSSION Mercuric chloride has an estimated human fatal dose of between 1 and 4 g. Despite a reported ingestion of a potentially lethal dose and a high blood concentration, this patient experienced mild to moderate poisoning only and she responded to early and appropriate intervention. Mercuric chloride can produce a range of toxic effects including corrosive injury, severe gastrointestinal disturbances, acute renal failure, circulatory collapse, and eventual death. Treatment includes close observation and aggressive supportive care along with chelation, preferably with 2,3-dimercapto-1-propane sulfonate or 2,3-meso-dimercaptosuccinic acid.
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40
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Regueiro-Figueroa M, Ruscsák E, Fra L, Tircsó G, Tóth I, de Blas A, Rodríguez-Blas T, Platas-Iglesias C, Esteban-Gómez D. Highly Stable Complexes of Divalent Metal Ions (Mg2+, Ca2+, Cu2+, Zn2+, Cd2+, and Pb2+) with a Dota-Like Ligand Containing a Picolinate Pendant. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402693] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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41
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Choi BY, Kim JH, Kim HJ, Lee BE, Kim IY, Sohn M, Suh SW. Zinc chelation reduces traumatic brain injury-induced neurogenesis in the subgranular zone of the hippocampal dentate gyrus. J Trace Elem Med Biol 2014; 28:474-81. [PMID: 25200616 DOI: 10.1016/j.jtemb.2014.07.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Numerous studies have demonstrated that traumatic brain injury (TBI) increases hippocampal neurogenesis in the rodent brain. However, the mechanisms underlying increased neurogenesis after TBI remain unknown. Continuous neurogenesis occurs in the subgranular zone (SGZ) of the hippocampal dentate gyrus (DG) in the adult brain. The mechanism that maintains active neurogenesis in the hippocampal area is not known. A high level of vesicular zinc is localized in the presynaptic terminals of the SGZ (mossy fiber). The mossy fiber of dentate granular cells contains high levels of chelatable zinc in their terminal vesicles, which can be released into the extracellular space during neuronal activity. Previously, our lab presented findings indicating that a possible correlation may exist between synaptic zinc localization and high rates of neurogenesis in this area after hypoglycemia or epilepsy. Using a weight drop animal model to mimic human TBI, we tested our hypothesis that zinc plays a key role in modulating hippocampal neurogenesis after TBI. Thus, we injected a zinc chelator, clioquinol (CQ, 30mg/kg), into the intraperitoneal space to reduce brain zinc availability twice per day for 1 week. Neuronal death was evaluated with Fluoro Jade-B and NeuN staining to determine whether CQ has neuroprotective effects after TBI. The number of degenerating neurons (FJB (+)) and live neurons (NeuN (+)) was similar in vehicle and in CQ-treated rats at 1 week after TBI. Neurogenesis was evaluated using BrdU, Ki67 and doublecortin (DCX) immunostaining 1 week after TBI. The number of BrdU, Ki67 and DCX positive cell was increased after TBI. However, the number of BrdU, Ki67 and DCX positive cells was significantly decreased by CQ treatment. The present study shows that zinc chelation did not prevent neurodegeneration but did reduce TBI-induced progenitor cell proliferation and neurogenesis. Therefore, this study suggests that zinc has an essential role for modulating hippocampal neurogenesis after TBI.
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Affiliation(s)
- Bo Young Choi
- Department of Physiology, Hallym University, College of Medicine, Chuncheon, Republic of Korea
| | - Jin Hee Kim
- Department of Physiology, Hallym University, College of Medicine, Chuncheon, Republic of Korea
| | - Hyun Jung Kim
- Department of Physiology, Hallym University, College of Medicine, Chuncheon, Republic of Korea
| | - Bo Eun Lee
- Department of Physiology, Hallym University, College of Medicine, Chuncheon, Republic of Korea
| | - In Yeol Kim
- Department of Physiology, Hallym University, College of Medicine, Chuncheon, Republic of Korea
| | - Min Sohn
- Inha University, Department of Nursing, Incheon, Republic of Korea
| | - Sang Won Suh
- Department of Physiology, Hallym University, College of Medicine, Chuncheon, Republic of Korea.
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42
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de la Gala Morales M, Ariño C, Díaz-Cruz JM, Esteban M. Study of the Complexation of Pb(II) withmeso-2,3- Dimercaptosuccinic Acid (DMSA) and 2,3-Dimercapto-1-propanesulfonic acid (DMPS) Using a Bismuth-Bulk Rotating Disk Electrode. ELECTROANAL 2014. [DOI: 10.1002/elan.201400279] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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A CV Study of Copper Complexation with Guanine Using Glassy Carbon Electrode in Aqueous Medium. ACTA ACUST UNITED AC 2014. [DOI: 10.1155/2014/308382] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Voltammetric behaviors of Copper (II) nitrogen bearing nucleobases, such as Guanine (C5H4N5O2) was studied in electro analyzer using cyclic voltammetry (CV) on a Glassy Carbon Electrode. Assessment of the chemical and physical conditions that may favor optimum current enhancement was done by studying the effect of variation of concentration of metal and ligand ions, variation of scan rate, variation of step height, variation of pH values, and variation of supporting electrolyte as (NH4)2SO4, KCl, and NaCl. It was observed that Copper and Guanine forms a 1 : 2 ratio complex. The work reflects that increasing the concentration of either metal ion or ligand ion increases the corresponding current. Increasing the scan rate increases the corresponding current linearly with the square root of the scan rate. As the step height decreases the peaks become sharp. Anodic and cathodic current increases linearly with decreasing step height. For the complex mixture the complexation occurs maximum at a pH of 2.3–7.0 and is badly restricted in the slightly alkaline medium and the complexing order of the supporting electrolyte showed a trend as (NH4)2SO4>NaCl>KCl.
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Rossignol DA, Genuis SJ, Frye RE. Environmental toxicants and autism spectrum disorders: a systematic review. Transl Psychiatry 2014; 4:e360. [PMID: 24518398 PMCID: PMC3944636 DOI: 10.1038/tp.2014.4] [Citation(s) in RCA: 302] [Impact Index Per Article: 30.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Revised: 12/15/2013] [Accepted: 01/06/2014] [Indexed: 11/21/2022] Open
Abstract
Although the involvement of genetic abnormalities in autism spectrum disorders (ASD) is well-accepted, recent studies point to an equal contribution by environmental factors, particularly environmental toxicants. However, these toxicant-related studies in ASD have not been systematically reviewed to date. Therefore, we compiled publications investigating potential associations between environmental toxicants and ASD and arranged these publications into the following three categories: (a) studies examining estimated toxicant exposures in the environment during the preconceptional, gestational and early childhood periods; (b) studies investigating biomarkers of toxicants; and (c) studies examining potential genetic susceptibilities to toxicants. A literature search of nine electronic scientific databases through November 2013 was performed. In the first category examining ASD risk and estimated toxicant exposures in the environment, the majority of studies (34/37; 92%) reported an association. Most of these studies were retrospective case-control, ecological or prospective cohort studies, although a few had weaker study designs (for example, case reports or series). Toxicants implicated in ASD included pesticides, phthalates, polychlorinated biphenyls (PCBs), solvents, toxic waste sites, air pollutants and heavy metals, with the strongest evidence found for air pollutants and pesticides. Gestational exposure to methylmercury (through fish exposure, one study) and childhood exposure to pollutants in water supplies (two studies) were not found to be associated with ASD risk. In the second category of studies investigating biomarkers of toxicants and ASD, a large number was dedicated to examining heavy metals. Such studies demonstrated mixed findings, with only 19 of 40 (47%) case-control studies reporting higher concentrations of heavy metals in blood, urine, hair, brain or teeth of children with ASD compared with controls. Other biomarker studies reported that solvent, phthalate and pesticide levels were associated with ASD, whereas PCB studies were mixed. Seven studies reported a relationship between autism severity and heavy metal biomarkers, suggesting evidence of a dose-effect relationship. Overall, the evidence linking biomarkers of toxicants with ASD (the second category) was weaker compared with the evidence associating estimated exposures to toxicants in the environment and ASD risk (the first category) because many of the biomarker studies contained small sample sizes and the relationships between biomarkers and ASD were inconsistent across studies. Regarding the third category of studies investigating potential genetic susceptibilities to toxicants, 10 unique studies examined polymorphisms in genes associated with increased susceptibilities to toxicants, with 8 studies reporting that such polymorphisms were more common in ASD individuals (or their mothers, 1 study) compared with controls (one study examined multiple polymorphisms). Genes implicated in these studies included paraoxonase (PON1, three of five studies), glutathione S-transferase (GSTM1 and GSTP1, three of four studies), δ-aminolevulinic acid dehydratase (one study), SLC11A3 (one study) and the metal regulatory transcription factor 1 (one of two studies). Notably, many of the reviewed studies had significant limitations, including lack of replication, limited sample sizes, retrospective design, recall and publication biases, inadequate matching of cases and controls, and the use of nonstandard tools to diagnose ASD. The findings of this review suggest that the etiology of ASD may involve, at least in a subset of children, complex interactions between genetic factors and certain environmental toxicants that may act synergistically or in parallel during critical periods of neurodevelopment, in a manner that increases the likelihood of developing ASD. Because of the limitations of many of the reviewed studies, additional high-quality epidemiological studies concerning environmental toxicants and ASD are warranted to confirm and clarify many of these findings.
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Affiliation(s)
- D A Rossignol
- Family Medicine, Rossignol Medical Center, Irvine, CA, USA
| | - S J Genuis
- Faculty of Medicine, University of Alberta, Edmonton, AB, Canada
| | - R E Frye
- Arkansas Children's Hospital Research Institute, University of Arkansas for Medical Sciences, Little Rock, AR, USA
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[15]aneN4S: synthesis, thermodynamic studies and potential applications in chelation therapy. Molecules 2014; 19:550-67. [PMID: 24394438 PMCID: PMC6271953 DOI: 10.3390/molecules19010550] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 12/23/2013] [Accepted: 12/24/2013] [Indexed: 12/04/2022] Open
Abstract
The purpose of this work was to synthesize and characterize the thiatetraaza macrocycle 1-thia-4,7,10,13-tetraazacyclopentadecane ([15]aneN4S). Its acid-base behaviour was studied by potentiometry at 25 °C and ionic strength 0.10 M in KNO3. The protonation sequence of this ligand was investigated by 1H-NMR titration that also allowed the determination of protonation constants in D2O. Binding studies of [15]aneN4S with Mn2+, Fe2+, Co2+, Ni2+, Cu2+, Zn2+, Cd2+, Hg2+ and Pb2+ metal ions were further performed under the same experimental conditions. The results demonstrated that this compound has a higher selectivity and thermodynamic stability for Hg2+ and Cu2+, followed by Ni2+. The UV-visible-near IR spectroscopies and magnetic moment data for the Co(II) and Ni(II) complexes indicated a tetragonal distorted coordination geometry for both metal centres. The value of magnetic moment and the X-band EPR spectra of the Cu(II) complex are consistent with a distorted square pyramidal geometry.
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Martins JG, Neto IFF, Pinto ISS, Soares EV, Barros MT, Soares HMVM. Alternative chelating agents: evaluation of the ready biodegradability and complexation properties. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2014; 49:344-354. [PMID: 24279626 DOI: 10.1080/10934529.2014.846706] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The ready biodegradability of four chelating agents, N,N'-(S,S)-bis[1-carboxy-2-(imidazol-4-yl)ethyl]ethylenediamine (BCIEE), N'-ethylenedi-L-cysteine (EC), N,N'-bis (4-imidazolymethyl)ethylenediamine (EMI) and 2,6-pyridine dicarboxylic acid (PDA), was tested according to the OECD guideline for testing of chemicals. PDA proved to be a readily biodegradable substance. However, none of the other three compounds were degraded during the 28 days of the test. Chemical simulations were performed for the four compounds in order to understand their ability to complex with some metal ions (Ca, Cd, Co, Cu, Fe, Mg, Mn, Ni, Pb, Zn) and discuss possible applications of these chelating agents. Two different conditions were simulated: (i) in the presence of the chelating agent and one metal ion, and (ii) in the simultaneous presence of the chelating agent and all metal ions with an excess of Ca. For those compounds that were revealed not to be readily biodegradable (BCIEE, EC and EMI), applications were evaluated where this property was not fundamental or even not required. Chemical simulations pointed out that possible applications for these chelating agents are: food fortification, food process, fertilizers, biocides, soil remediation and treatment of metal poisoning. Additionally, chemical simulations also predicted that PDA is an efficient chelating agent for Ca incrustations removal, detergents and for pulp metal ions removal process.
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Affiliation(s)
- João G Martins
- a REQUIMTE - Departament of Chemical Engineering, Faculty of Engineering , University of Porto , Porto , Portugal
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Ngu-Schwemlein M, Lin X, Rudd B, Bronson M. Synthesis and ESI mass spectrometric analysis of the association of mercury(II) with multi-cysteinyl peptides. J Inorg Biochem 2013; 133:8-23. [PMID: 24413258 DOI: 10.1016/j.jinorgbio.2013.12.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2013] [Revised: 12/17/2013] [Accepted: 12/17/2013] [Indexed: 01/21/2023]
Abstract
In order to gain more insight into the associations of mercury(II) with cysteinyl peptides, we investigated the effect of increasing cysteinyl residues on complex type formations. Three series of di-, tri-, and tetra-cysteinyl peptides, D[CGD]nCG (CP 2A, CP 3A, and CP 4A), E[CEG]nCG (CP 2B, CP 3B, and CP 4B) and E[CDG]nCG (CP 2C, CP 3C, and CP 4C), where n=1, 2, or 3, were prepared by microwave-assisted solid phase peptide synthesis. Complexes formed in different relative ratios of mercury(II) to cysteinyl peptides were characterized by electrospray orbitrap mass spectrometry utilizing complex specific mercury isotopic patterns. In equimolar mercury(II) to peptide ratio, all three series of di-, tri-, and tetra-cysteinyl peptides form predominantly the 1:1Hg(peptide) complex type, indicating that the intervening amino acid residues do not elicit preferential complex type formation. However, in non-equivalent mercury(II) to peptide ratio, the number of cysteinyl residues has a significant effect on the Hg:peptide stoichiometry in the complex formed. For example, in four times excess peptide, the 1:2Hg(peptide)2 and 1:1Hg(peptide) complexes are formed for di-cysteinyl peptides but not for the tri- and tetra-cysteinyl peptides. In contrast, the 2:1Hg2(peptide) and 1:1Hg(peptide) complexes are formed for the tri- and tetra-cysteinyl peptides. In excess mercury(II), CP 4C formed exclusively the 2:1Hg2(peptide) complex. The exact number of deprotonations observed for each complex could be derived from its signature mercury isotope pattern and monoisotopic peak mass. These multi-cysteinyl peptides present an attractive option for mercury chelation or environmental heavy metal remediation.
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Affiliation(s)
- Maria Ngu-Schwemlein
- Department of Chemistry, Winston-Salem State University, Winston-Salem, NC 27110, USA.
| | - Xiuli Lin
- Department of Chemistry, Wake Forest University, Winston-Salem, NC 27109, USA
| | - Brent Rudd
- Department of Chemistry, Winston-Salem State University, Winston-Salem, NC 27110, USA
| | - Matthew Bronson
- Department of Chemistry, Winston-Salem State University, Winston-Salem, NC 27110, USA
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Abstract
These proceedings will review the role of chelation in five metals-aluminum, cadmium, chromium, cobalt, and uranium-in order to illustrate various chelation concepts. The process of "chelation" can often be oversimplified, leading to incorrect assumptions and risking patient harm. For chelation to be effective, two critical assumptions must be fulfilled: the presumed "metal toxicity" must correlate with a given body or a particular compartment burden, and reducing this compartmental or the body burden (through chelation) attenuates toxicity. Fulfilling these assumptions requires an established dose-response relationship, a validated, reproducible means of toxicity assessment (clinical, biochemical, or radiographical), and an appropriate assessment mechanisms of body or compartment burden. While a metal might "technically" be capable of chelation (and readily demonstrable in urine or feces), this is an insufficient endpoint. Clinical relevance must be affirmed. Deferoxamine is an accepted chelator for appropriately documented aluminum toxicity. There is a very minimal treatment window in order to address chelation in cadmium toxicity. In acute toxicity, while no definitive chelation benefit is described, succimer (DMSA), diethylenetriaminepentaacetate (DTPA), and potentially ethylenediaminetetraacetic acid (EDTA) have been considered. In chronic toxicity, chelation is unsupported. There is little evidence to suggest that currently available chromium chelators are efficacious. Similarly, scant human evidence exists with which to provide recommendation for cobalt chelation. DTPA has been recommended for cobalt radionuclide chelation, although DMSA, EDTA, and N-acetylcysteine have also been suggested. DTPA is unsupported for uranium chelation. Sodium bicarbonate is currently recommended, although animal evidence is conflicting.
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Affiliation(s)
- Silas W Smith
- Department of Emergency Medicine, Division of Medical Toxicology, New York University School of Medicine, New York, NY, USA,
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Sattler W, Palmer JH, Bridges CC, Joshee L, Zalups RK, Parkin G. Structural characterization of 1,3-propanedithiols that feature carboxylic acids: Homologues of mercury chelating agents. Polyhedron 2013; 64. [DOI: 10.1016/j.poly.2013.05.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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50
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Cohen JP, Ruha AM, Curry SC, Biswas K, Westenberger B, Ye W, Caldwell KL, Lovecchio F, Burkhart K, Samia N. Plasma and urine dimercaptopropanesulfonate concentrations after dermal application of transdermal DMPS (TD-DMPS). J Med Toxicol 2013; 9:9-15. [PMID: 23143832 DOI: 10.1007/s13181-012-0272-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
2,3-Dimercaptopropane-1-sulfonate (DMPS) is a metal chelator approved in Europe for oral or intravenous use for heavy metal poisoning. Transdermally applied DMPS (TD-DMPS) is used by some alternative practitioners to treat autism, despite the absence of evidence for its efficacy. We found no literature evaluating the pharmacokinetics of the transdermal route of delivery or the ability of TD-DMPS to enhance urinary mercury elimination. We hypothesized that TD-DMPS is not absorbed. Eight adult volunteers underwent application of 1.5-3 drops/kg of TD-DMPS. Subjects provided 12-h urine collections the day before and day of application. Subjects underwent blood draws at 0, 30, 60,90, 120, and 240 min after TD-DMPS application. Plasma and urine were assayed for the presence of DMPS. Urine was assayed for any change in urinary mercury excretion after DMPS. One control subject ingested 250 mg of oral DMPS and underwent the same urine and blood collections and analyses. No subject had detectable urine DMPS or increased urine mercury excretion after TD-DMPS. One subject had detectable levels of DMPS in the 30-min plasma sample, suspected to be contamination. All other samples for that subject and the other seven subjects showed no detectable plasma DMPS. The control subject had detectable urine and plasma DMPS levels and increased urine mercury excretion. These results indicate that TD-DMPS is not absorbed. There was no increase in urine mercury excretion after TD-DMPS. Our results argue that TD-DMPS is an ineffective metal chelator.
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Affiliation(s)
- Jennifer P Cohen
- Department of Medical Toxicology, Banner Good Samaritan Medical Center, Medical Toxicology, Phoenix, AZ 85006, USA
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