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Zhang S, Wang J, Zhang Y, Ma J, Huang L, Yu S, Chen L, Song G, Qiu M, Wang X. Applications of water-stable metal-organic frameworks in the removal of water pollutants: A review. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 291:118076. [PMID: 34534824 DOI: 10.1016/j.envpol.2021.118076] [Citation(s) in RCA: 158] [Impact Index Per Article: 52.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 08/23/2021] [Accepted: 08/29/2021] [Indexed: 05/18/2023]
Abstract
Because the pollutants produced by human activities have destroyed the ecological balance of natural water environment, and caused severe impact on human life safety and environmental security. Hence the task of water environment restoration is imminent. Metal-organic frameworks (MOFs), structured from organic ligands and inorganic metal ions, are notable for their outstanding crystallinity, diverse structures, large surface areas, adsorption performance, and excellent component tunability. The water stability of MOFs is a key requisite for their possible actual applications in separation, catalysis, adsorption, and other water environment remediation areas because it is necessary to safeguard the integrity of the material structure during utilization. In this article, we comprehensively review state-of-the-art research progress on the promising potential of MOFs as excellent nanomaterials to remove contaminants from the water environment. Firstly, the fundamental characteristics and preparation methods of several typical water-stable MOFs include UiO, MIL, and ZIF are introduced. Then, the removal property and mechanism of heavy metal ions, radionuclide contaminants, drugs, and organic dyes by different MOFs were compared. Finally, the application prospect of MOFs in pollutant remediation prospected. In this review, the synthesis methods and application in water pollutant removal are explored, which provide ways toward the effective use of water-stable MOFs in materials design and environmental remediation.
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Affiliation(s)
- Shu Zhang
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, PR China
| | - Jiaqi Wang
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, PR China
| | - Yue Zhang
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, PR China
| | - Junzhou Ma
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, PR China
| | - Lintianyang Huang
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, PR China
| | - Shujun Yu
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, PR China
| | - Lan Chen
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, PR China
| | - Gang Song
- Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Muqing Qiu
- School of Life Science, Shaoxing University, Shaoxing, 312000, PR China
| | - Xiangxue Wang
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, PR China; Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science and Technology, Mianyang, 621010, China.
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Lead-Induced Motor Dysfunction Is Associated with Oxidative Stress, Proteome Modulation, and Neurodegeneration in Motor Cortex of Rats. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:5595047. [PMID: 34659634 PMCID: PMC8516562 DOI: 10.1155/2021/5595047] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 08/15/2021] [Accepted: 09/11/2021] [Indexed: 12/14/2022]
Abstract
Lead (Pb) is a toxic metal with great neurotoxic potential. The aim of this study was to investigate the effects of a long-term Pb intoxication on the global proteomic profile, oxidative biochemistry and neuronal density in motor cortex of adult rats, and the possible outcomes related to motor functions. For this, Wistar rats received for 55 days a dose of 50 mg/Kg of Pb acetate by intragastric gavage. Then, the motor abilities were evaluated by open field and inclined plane tests. To investigate the possible oxidative biochemistry modulation, the levels of pro-oxidant parameters as lipid peroxidation and nitrites were evaluated. The global proteomic profile was evaluated by ultraefficiency liquid chromatography system coupled with mass spectrometry (UPLC/MS) followed by bioinformatic analysis. Moreover, it was evaluated the mature neuron density by anti-NeuN immunostaining. The statistical analysis was performed through Student's t-test, considering p < 0.05. We observed oxidative stress triggering by the increase in malonaldehyde and nitrite levels in motor cortex. In the proteomic analysis, the motor cortex presented alterations in proteins associated with neural functioning, morphological organization, and neurodegenerative features. In addition, it was observed a decrease in the number of mature neurons. These findings, associated with previous evidences observed in spinal cord, cerebellum, and hippocampus under the same Pb administration protocol, corroborate with the motor deficits in the rats towards Pb. Thus, we conclude that the long-term administration to Pb in young Wistar rats triggers impairments at several organizational levels, such as biochemical and morphological, which resulted in poor motor performance.
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Lermen D, Weber T, Göen T, Bartel-Steinbach M, Gwinner F, Mueller SC, Conrad A, Rüther M, von Briesen H, Kolossa-Gehring M. Long-term time trend of lead exposure in young German adults - Evaluation of more than 35 Years of data of the German Environmental Specimen Bank. Int J Hyg Environ Health 2020; 231:113665. [PMID: 33221633 DOI: 10.1016/j.ijheh.2020.113665] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 11/06/2020] [Accepted: 11/11/2020] [Indexed: 02/06/2023]
Abstract
Lead is a ubiquitous pollutant with well-known effects on human health. As there is no lower toxicological threshold for lead in blood and since data gaps on lead exposure still exist in many European countries, HBM data on lead is of high importance. To address this, the European Human Biomonitoring Initiative HBM4EU classified lead as a priority substance. The German Environmental Specimen Bank (German ESB) has monitored lead exposure since more than 35 years. Using data from the early 1980s to 2019 we reveal and discuss long-term trends in blood lead levels (BLLs) and current internal exposure of young adults in Germany. BLLs in young adults decreased substantially in the investigated period. As results from the ESB sampling site Muenster demonstrate, the geometric mean of BLLs of young adults decreased from 1981 (78,7 μg/L) to 2019 (10.4 μg/L) by about 87%. Trends in human exposure closely correlate with air lead levels (ALLs) provided by the European Monitoring and Evaluation Programme (EMEP). Hence, the decrease of BLLs largely reflects the drop in air lead pollution. Known associations of sex, smoking, alcohol consumption, and housing situation with BLLs are confirmed with data of the German ESB. Although internal lead exposure in Germany decreased substantially, the situation might be different in other European countries. Since 2010, BLLs of young adults in Germany levelled out at approximately 10 μg/L. The toxicity of lead even at low levels is known to cause adverse health effects especially in children following exposure of the child or the mother during pregnancy. To identify current exposure sources and to minimize future lead exposure, continuous monitoring of lead intake and exposure levels is needed.
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Affiliation(s)
- Dominik Lermen
- Fraunhofer Institute for Biomedical Engineering IBMT, Sulzbach, Germany.
| | - Till Weber
- German Environment Agency (Umweltbundesamt), Berlin, Germany
| | - Thomas Göen
- Institute and Outpatient Clinic of Occupational, Social and Environmental Medicine, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | | | - Frederik Gwinner
- Fraunhofer Institute for Biomedical Engineering IBMT, Sulzbach, Germany
| | - Sabine C Mueller
- Fraunhofer Institute for Biomedical Engineering IBMT, Sulzbach, Germany
| | - André Conrad
- German Environment Agency (Umweltbundesamt), Berlin, Germany
| | - Maria Rüther
- German Environment Agency (Umweltbundesamt), Berlin, Germany
| | - Hagen von Briesen
- Fraunhofer Institute for Biomedical Engineering IBMT, Sulzbach, Germany
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Aqlan FM, Alam M, Asiri AM, Zayed ME, Al-Eryani DA, Al-Zahrani FA, El-Shishtawy RM, Uddin J, Rahman MM. Fabrication of selective and sensitive Pb2+ detection by 2,2′-(−(1,2-phenylenebis(azaneylylidene))bis(methaneylylidene))diphenol by electrochemical approach for environmental remediation. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.02.109] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Daley K, Truelstrup Hansen L, Jamieson RC, Hayward JL, Piorkowski GS, Krkosek W, Gagnon GA, Castleden H, MacNeil K, Poltarowicz J, Corriveau E, Jackson A, Lywood J, Huang Y. Chemical and microbial characteristics of municipal drinking water supply systems in the Canadian Arctic. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:32926-32937. [PMID: 28612312 DOI: 10.1007/s11356-017-9423-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Accepted: 05/31/2017] [Indexed: 06/07/2023]
Abstract
Drinking water in the vast Arctic Canadian territory of Nunavut is sourced from surface water lakes or rivers and transferred to man-made or natural reservoirs. The raw water is at a minimum treated by chlorination and distributed to customers either by trucks delivering to a water storage tank inside buildings or through a piped distribution system. The objective of this study was to characterize the chemical and microbial drinking water quality from source to tap in three hamlets (Coral Harbour, Pond Inlet and Pangnirtung-each has a population of <2000) on trucked service, and in Iqaluit (population ~6700), which uses a combination of trucked and piped water conveyance. Generally, the source and drinking water was of satisfactory microbial quality, containing Escherichia coli levels of <1 MPN/100 mL with a few exceptions, and selected pathogenic bacteria and parasites were below detection limits using quantitative polymerase chain reaction (qPCR) methods. Tap water in households receiving trucked water contained less than the recommended 0.2 mg/L of free chlorine, while piped drinking water in Iqaluit complied with Health Canada guidelines for residual chlorine (i.e. >0.2 mg/L free chlorine). Some buildings in the four communities contained manganese (Mn), copper (Cu), iron (Fe) and/or lead (Pb) concentrations above Health Canada guideline values for the aesthetic (Mn, Cu and Fe) and health (Pb) objectives. Corrosion of components of the drinking water distribution system (household storage tanks, premise plumbing) could be contributing to Pb, Cu and Fe levels, as the source water in three of the four communities had low alkalinity. The results point to the need for robust disinfection, which may include secondary disinfection or point-of-use disinfection, to prevent microbial risks in drinking water tanks in buildings and ultimately at the tap.
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Affiliation(s)
- Kiley Daley
- Centre for Water Resources Studies, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Lisbeth Truelstrup Hansen
- Centre for Water Resources Studies, Dalhousie University, Halifax, NS, B3H 4R2, Canada.
- National Food Institute, Technical University of Denmark, Kgs. Lyngby, Denmark.
| | - Rob C Jamieson
- Centre for Water Resources Studies, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Jenny L Hayward
- Centre for Water Resources Studies, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Greg S Piorkowski
- Centre for Water Resources Studies, Dalhousie University, Halifax, NS, B3H 4R2, Canada
- Alberta Agriculture and Forestry, Edmonton, AB, Canada
| | - Wendy Krkosek
- Centre for Water Resources Studies, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Graham A Gagnon
- Centre for Water Resources Studies, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Heather Castleden
- Centre for Water Resources Studies, Dalhousie University, Halifax, NS, B3H 4R2, Canada
- Queen's University, Kingston, ON, Canada
| | - Kristen MacNeil
- Centre for Water Resources Studies, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Joanna Poltarowicz
- Centre for Water Resources Studies, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Emmalina Corriveau
- Centre for Water Resources Studies, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Amy Jackson
- Centre for Water Resources Studies, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Justine Lywood
- Centre for Water Resources Studies, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Yannan Huang
- Centre for Water Resources Studies, Dalhousie University, Halifax, NS, B3H 4R2, Canada
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Jakhu R, Mehra R. Risk estimation and multivariate statistical analysis of the heavy metal content of drinking water samples. Toxicol Ind Health 2018; 34:714-725. [PMID: 30033852 DOI: 10.1177/0748233718773024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Drinking water samples of Jaipur and Ajmer districts of Rajasthan, India, were collected and analyzed for the measurement of concentration of heavy metals. The purpose of this study was to determine the sources of the heavy metals in the drinking water. Inductively coupled plasma mass spectrometry was used for the determination of the heavy metal concentrations, and for the statistical analysis of the data, principal component analysis and cluster analysis were performed. It was observed from the results that with respect to WHO guidelines, the water samples of some locations exceeded the contamination levels for lead (Pb), selenium (Se), and mercury (Hg), and with reference to the EPA guidelines, the samples were determined unsuitable for drinking because of high concentrations of Pb and Hg. Using multivariate statistical analysis, we determined that copper, manganese, arsenic, Se, and Hg were of anthropogenic origin, while Pb, copper, and cadmium were of geogenic origin. The present study reports the dominance of the anthropogenic contributions over geogenics in the studied area. The sources of the anthropogenic contaminants need to be investigated in a future study.
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Affiliation(s)
- Rajan Jakhu
- Department of Physics, Dr. B. R. Ambedkar National Institute of Technology Jalandhar, Punjab, India
| | - Rohit Mehra
- Department of Physics, Dr. B. R. Ambedkar National Institute of Technology Jalandhar, Punjab, India
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Le Bot B, Lucas JP, Lacroix F, Glorennec P. Exposure of children to metals via tap water ingestion at home: Contamination and exposure data from a nationwide survey in France. ENVIRONMENT INTERNATIONAL 2016; 94:500-507. [PMID: 27307033 DOI: 10.1016/j.envint.2016.06.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 05/31/2016] [Accepted: 06/08/2016] [Indexed: 06/06/2023]
Abstract
29 inorganic compounds (Al, As, B, Ba, Be, Bi, Ca, Cd, Ce, Co, Cr, Cu, Fe, Gd, K, Mg, Mn, Mo, Na, Nd, Ni, Pb, Sb, Se, Sr, Tl, U, V and Zn) were measured in the tap water of 484 representative homes of children aged 6months to 6years in metropolitan France in 2008-2009. Parents were asked whether their children consumed tap water. Sampling design and sampling weights were taken into account to estimate element concentrations in tap water supplied to the 3,581,991 homes of 4,923,058 children aged 6months to 6years. Median and 95th percentiles of concentrations in tap water were in μg/L: Al: <10, 48.3, As: 0.2, 2.1; B: <100, 100; Ba: 30.7, 149.4; Ca: 85,000, 121,700; Cd: <0.5, <0.5; Ce: <0.5, <0.5; Co: <0.5, 0.8; Cr: <5, <5; Cu: 70, 720; K: 2210, 6740; Fe: <20, 46; Mn: <5, <5; Mo: <0.5, 1.5; Na: 14,500, 66,800; Ni: <2, 10.2; Mg: 6500, 21,200; Pb: <1, 5.4; Sb: <0.5, <0.5; Se: <1, 6.7; Sr: 256.9, 1004; Tl: <0.5, <0.5; U: <0.5, 2.4; V: <1, 1; Zn: 53, 208. Of the 2,977,123 young children drinking tap water in France, some were drinking water having concentrations above the 2011 World Health Organization drinking-water quality guidelines: respectively 498 (CI 95%: 0-1484) over 700μg/L of Ba; 121,581 (CI 95%: 7091-236,070) over 50mg/L of Na; 2044 (CI 95%: 0-6132) over 70μg/L of Ni, and 78,466 (17,171-139,761) over 10μg/L of Pb. Since it is representative, this tap water contamination data can be used for integrated exposure assessment, in conjunction with diet and environmental (dust and soil) exposure data.
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Affiliation(s)
- Barbara Le Bot
- EHESP, School of Public Health, Rennes, Sorbonne Paris Cité, - Avenue du Professeur Léon-Bernard, CS 74312, 35043 Rennes cedex, France; Irset Inserm, UMR 1085-Institut de Recherche sur la Santé, l'Environnement et le Travail, Rennes, France.
| | - Jean-Paul Lucas
- University of Paris Est, CSTB, Scientific and Technical Building Centre, Marne la Vallée Cedex 2, France; University of South Brittany, UMR 6205, LMBA, F-56000 Vannes, France
| | - Françoise Lacroix
- EHESP, School of Public Health, Rennes, Sorbonne Paris Cité, - Avenue du Professeur Léon-Bernard, CS 74312, 35043 Rennes cedex, France; Irset Inserm, UMR 1085-Institut de Recherche sur la Santé, l'Environnement et le Travail, Rennes, France
| | - Philippe Glorennec
- EHESP, School of Public Health, Rennes, Sorbonne Paris Cité, - Avenue du Professeur Léon-Bernard, CS 74312, 35043 Rennes cedex, France; Irset Inserm, UMR 1085-Institut de Recherche sur la Santé, l'Environnement et le Travail, Rennes, France
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Release of Metals from Different Sections of Domestic Drinking Water Installations. ACTA ACUST UNITED AC 2014. [DOI: 10.1007/s12403-014-0140-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Pourmand A, Khedir Al-Tiae T, Mazer-Amirshahi M. Perspective on lead toxicity, a comparison between the United States and Iran. ACTA ACUST UNITED AC 2012; 20:70. [PMID: 23351672 PMCID: PMC3556021 DOI: 10.1186/2008-2231-20-70] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Accepted: 10/26/2012] [Indexed: 11/10/2022]
Abstract
Lead is a pervasive toxin that has been implicated in human poisonings throughout history. Exposure mitigation strategies in the United States and worldwide have led to a decline in symptomatic poisonings and population blood lead levels; however, lead remains a major health hazard. In this article, we review the history of lead toxicity, clinical manifestations ranging from subclinical and subtle features to life-threatening complications, and the subsequent public health interventions in the US. In addition, we explore common routes of lead exposure and the unique differences between the US and Iran. Although the US has made significant strides with regard to this public health issue, lead poisoning in both countries continues to be a health hazard in the adult and pediatric populations. It is also critical to consider natural disasters and reconstruction efforts as potential sources of lead contamination. In conclusion, we make recommendations that both the US and Iranian authorities can implement to eradicate lead as a public health hazard.
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Affiliation(s)
- Ali Pourmand
- Department of Emergency Medicine, George Washington University, Washington, DC, USA.
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Karrari P, Mehrpour O, Abdollahi M. A systematic review on status of lead pollution and toxicity in Iran; Guidance for preventive measures. Daru 2012; 20:2. [PMID: 23226111 PMCID: PMC3514537 DOI: 10.1186/1560-8115-20-2] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2012] [Accepted: 07/19/2012] [Indexed: 12/23/2022] Open
Abstract
Lead is an old environmental metal which is presented everywhere and lead poisoning is an important health issue in many countries in the world including Iran. It is known as a silent environmental disease which can have life-long adverse health effects. In children, the most vulnerable population, mental development of children health effects is of the greatest influence. Low level lead exposure can significantly induce motor dysfunctions and cognitive impairment in children. The sources of lead exposure vary among countries. Occupational lead exposure is an important health issue in Iran and mine workers, employees of paint factories, workers of copying centers, drivers, and tile making factories are in higher risk of lead toxicity. Moreover lead processing industry has always been a major of concern which affects surface water, drinking waters, and ground waters, even water of Caspian Sea, Persian Gulf and rivers due to increasing the number of industries in vicinity of rivers that release their waste discharges into river or sea. In addition, lead contamination of soil and air especially in vicinity of polluted and industrialized cities is another health problem in Iran. Even foods such as rice and fishes, raw milk, and vegetables which are the most common food of Iranian population are polluted to lead in some area of Iran. Adding lead to the opium is a recently health hazard in Iran that has been observed among opium addicts. There are few studies evaluated current status of lead exposure and toxicity in the Iranian children and pregnant women which should be taken into account of authorities. We recommend to identify sources, eliminate or control sources, and monitor environmental exposures and hazards to prevent lead poisoning.
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Affiliation(s)
- Parissa Karrari
- Medical Toxicology and Drug Abuse Research Center (MTDRC), Pasdaran Avenue, Birjand University of Medical Sciences, Birjand, 9713643138, Iran
- Department of Clinical Toxicology and Forensic Medicine, Faculty of Medicine, Birjand University of Medical Sciences, Ghaffari Avenue, Birjand, 9717853577, Iran
| | - Omid Mehrpour
- Medical Toxicology and Drug Abuse Research Center (MTDRC), Pasdaran Avenue, Birjand University of Medical Sciences, Birjand, 9713643138, Iran
- Department of Clinical Toxicology and Forensic Medicine, Faculty of Medicine, Birjand University of Medical Sciences, Ghaffari Avenue, Birjand, 9717853577, Iran
| | - Mohammad Abdollahi
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, 1417614411, Iran
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Jang WH, Lim KM, Kim K, Noh JY, Kang S, Chang YK, Chung JH. Low level of lead can induce phosphatidylserine exposure and erythrophagocytosis: a new mechanism underlying lead-associated anemia. Toxicol Sci 2011; 122:177-84. [PMID: 21482638 DOI: 10.1093/toxsci/kfr079] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Anemia is probably one of the most well-known toxic effects of lead. Previously, lead-induced anemia was considered to be from the inhibition of δ-aminolevulinic acid dehydratase participating in the heme biosynthesis. However, little is known whether lead could affect the destruction of erythrocyte, another important factor for anemia. In the present study, we demonstrated that lead could accelerate the splenic sequestration of erythrocytes through phosphatidylserine (PS) exposure and subsequently increased erythrophagocytosis. In freshly isolated human erythrocytes, Pb(2+)- induced PS exposure at relatively low concentrations (∼0.1 μM) by inhibiting flippase, a key aminophospholipid translocase for the maintenance of PS asymmetry and adenosine triphosphate depletion appeared to underlie this phenomenon. Abnormal shape changes of erythrocytes and microvesicle generation and other triggers for the erythrophagocytosis were also observed in the Pb(2+)-exposed erythrocytes. In vitro data showed that human macrophage indeed recognized and phagocytosis PS-exposed erythrocytes. In good accordance with these in vitro results, the oral administration of Pb(2+) increased PS exposure on erythrocytes in rat in vivo. In addition, reduction of hematocrit and hemoglobin and increased spleen weight were observed along with enhanced splenic sequestration of erythrocytes in the rats exposed to Pb(2+) subchronically for 4 weeks through drinking water. In conclusion, these results suggest that Pb(2+)-induced anemia may be explained at least in part by increased PS exposure on erythrocytes, erythrophagocytosis, and splenic sequestration.
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Affiliation(s)
- Won-Hee Jang
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, Korea
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