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Poudel K, Ikeda A, Fukunaga H, Brune Drisse MN, Onyon LJ, Gorman J, Laborde A, Kishi R. How does formal and informal industry contribute to lead exposure? A narrative review from Vietnam, Uruguay, and Malaysia. REVIEWS ON ENVIRONMENTAL HEALTH 2024; 39:371-388. [PMID: 36735953 DOI: 10.1515/reveh-2022-0224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 01/07/2023] [Indexed: 06/18/2023]
Abstract
INTRODUCTION Lead industries are one of the major sources of environmental pollution and can affect human through different activities, including industrial processes, metal plating, mining, battery recycling, etc. Although different studies have documented the various sources of lead exposure, studies highlighting different types of industries as sources of environmental contamination are limited. Therefore, this narrative review aims to focus mainly on lead industries as significant sources of environmental and human contamination. CONTENT Based on the keywords searched in bibliographic databases we found 44 relevant articles that provided information on lead present in soil, water, and blood or all components among participants living near high-risk areas. We presented three case scenarios to highlight how lead industries have affected the health of citizens in Vietnam, Uruguay, and Malaysia. SUMMARY AND OUTLOOK Factories conducting mining, e-waste processing, used lead-acid battery recycling, electronic repair, and toxic waste sites were the primary industries for lead exposure. Our study has shown lead exposure due to industrial activities in Vietnam, Uruguay, Malaysia and calls for attention to the gaps in strategic and epidemiologic efforts to understand sources of environmental exposure to lead fully. Developing strategies and guidelines to regulate industrial activities, finding alternatives to reduce lead toxicity and exposure, and empowering the public through various community awareness programs can play a crucial role in controlling exposure to lead.
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Affiliation(s)
- Kritika Poudel
- Center for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan
- WHO Collaborating Center for Environmental Health and Prevention of Chemical Hazards, Sapporo, Japan
- Centre for Health Equity, University of Melbourne, Melbourne, Australia
| | - Atsuko Ikeda
- Center for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan
- WHO Collaborating Center for Environmental Health and Prevention of Chemical Hazards, Sapporo, Japan
- Faculty of Health Sciences, Hokkaido University, Sapporo, Japan
| | | | - Marie-Noel Brune Drisse
- Department of Environment, Climate Change and Health, World Health Organization, Geneva, Switzerland
| | - Lesley Jayne Onyon
- Department of Environment, Climate Change and Health, World Health Organization, Geneva, Switzerland
| | - Julia Gorman
- Department of Environment, Climate Change and Health, World Health Organization, Geneva, Switzerland
| | - Amalia Laborde
- Department of Toxicology, Faculty of Medicine, Republic University of Montevideo, Montevideo, Uruguay
| | - Reiko Kishi
- Center for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan
- WHO Collaborating Center for Environmental Health and Prevention of Chemical Hazards, Sapporo, Japan
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Eqani SAMAS, Alamdar A, Nawaz I, Shah SSA, Khanam T, Hayder QUA, Sohail M, Katsoyiannis IA, Shen H. Human biomonitoring of trace metals from different altitudinal settings of Pakistan. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:25486-25499. [PMID: 38472570 DOI: 10.1007/s11356-024-32766-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 02/29/2024] [Indexed: 03/14/2024]
Abstract
Human biomonitoring of toxic trace elements is of critical importance for public health protection. The current study aims to assess the levels of selected trace metals (Cd, Co, Cr, Cu, Mn, Ni, Pb, and Zn) into paired human nail and hair samples (n = 180 each) from different altitudinal setting along the Indus River, and which were measured by using inductively coupled plasma mass spectrometry (ICP-MS). The human samples (hair and nail) were collected from four different ecological zones of Pakistan which include frozen mountain zone (FMZ), wet mountain zone (WMZ), riverine delta zone (RDZ), and low-lying southern areas (LLZ). Our results showed the following occurrence trends into studied hair samples: higher values (ppm) of Zn (281), Co (0.136), and Mn (5.65) at FMZ; Cr (1.37), Mn (7.83), and Ni (1.22) at WMZ; Co (0.15), Mn (11.89), and Ni (0.99) at RDZ; and Mn (8.99) and Ni (0.90) at LLZ. While in the case of nails, the levels (ppm) of Mn (9.91) at FMZ and Mn (9.38, 24.1, and 12.5), Cr (1.84, 3.87, and 2.33), and Ni (10.69, 8.89, and 12.6) at WMZ, RDZ and LLZ, respectively, showed higher concentration. In general, among the studied trace elements, Mn and Ni in hair/nail samples were consistently higher and exceeded the WHO threshold/published reference values in most of the studied samples (> 50-60%) throughout the Indus basin. Similarly, hair/nail Pb values were also higher in few cases (2-10%) at all studied zones and exceeded the WHO threshold/published reference values. Our area-wise comparisons of studied metals exhibited altitudinal trends for Cd, Cr, Zn, and Mn (p < 0.05), and surprisingly, the values were increasing from south to north (at higher altitudes) and indicative of geogenic sources of the studied toxic elements, except Mn, which was higher at lower floodplain areas. Estimated daily intake (EDI) values showed that food and drinking water had the highest contribution towards Zn, Cu, Mn, and Ni and accumulation at all studied zones. Whereas, dust also acts as the main exposure route for Mn, Co, Cr, and Cd followed by the food, and water.
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Affiliation(s)
| | - Ambreen Alamdar
- Environment Health Sciences and Managment, Health Services Academy, Islamabad, Pakistan
| | - Ismat Nawaz
- Ecohealth and Toxicology Lab, Department of Biosciences, COMSATS University Islamabad, Islamabad, Pakistan
| | - Syed Sayyam Abbas Shah
- Ecohealth and Toxicology Lab, Department of Biosciences, COMSATS University Islamabad, Islamabad, Pakistan
| | - Tasawar Khanam
- Ecohealth and Toxicology Lab, Department of Biosciences, COMSATS University Islamabad, Islamabad, Pakistan
| | - Qurat Ul Ain Hayder
- Ecohealth and Toxicology Lab, Department of Biosciences, COMSATS University Islamabad, Islamabad, Pakistan
| | - Muhammad Sohail
- Ecohealth and Toxicology Lab, Department of Biosciences, COMSATS University Islamabad, Islamabad, Pakistan
- Department of Zoology, University of Central Punjab, Sargodha Campus, Lahore, Pakistan
| | - Ioannis A Katsoyiannis
- Department of Chemistry, Laboratory of Chemical and Environmental Technology, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - Heqing Shen
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, People's Republic of China
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Howe CG, Armstrong DA, Muse ME, Gilbert-Diamond D, Gui J, Hoen AG, Palys TJ, Barnaby RL, Stanton BA, Jackson BP, Christensen BC, Karagas MR. Periconceptional and Prenatal Exposure to Metals and Extracellular Vesicle and Particle miRNAs in Human Milk: A Pilot Study. EXPOSURE AND HEALTH 2023; 15:731-743. [PMID: 38074282 PMCID: PMC10707483 DOI: 10.1007/s12403-022-00520-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 10/17/2022] [Accepted: 10/21/2022] [Indexed: 06/30/2024]
Abstract
Human milk is a rich source of microRNAs (miRNAs), which can be transported by extracellular vesicles and particles (EVPs) and are hypothesized to contribute to maternal-offspring communication and child development. Environmental contaminant impacts on EVP miRNAs in human milk are largely unknown. In a pilot study of 54 mother-child pairs from the New Hampshire Birth Cohort Study, we examined relationships between five metals (arsenic, lead, manganese, mercury, and selenium) measured in maternal toenail clippings, reflecting exposures during the periconceptional and prenatal periods, and EVP miRNA levels in human milk. 798 miRNAs were profiled using the NanoString nCounter platform; 200 miRNAs were widely detectable and retained for downstream analyses. Metal-miRNA associations were evaluated using covariate-adjusted robust linear regression models. Arsenic exposure during the periconceptional and prenatal periods was associated with lower total miRNA content in human milk EVPs (PBonferroni < 0.05). When evaluating miRNAs individually, 13 miRNAs were inversely associated with arsenic exposure, two in the periconceptional period and 11 in the prenatal period (PBonferroni < 0.05). Other metal-miRNA associations were not statistically significant after multiple testing correction (PBonferroni ≥ 0.05). Many of the arsenic-associated miRNAs are involved in lactation and have anti-inflammatory properties in the intestine and tumor suppressive functions in breast cells. Our findings raise the possibility that periconceptional and prenatal arsenic exposure may reduce levels of multiple miRNAs in human milk EVPs. However, larger confirmatory studies, which can apply environmental mixture approaches, evaluate potential effect modifiers of these relationships, and examine possible downstream consequences for maternal and child health and breastfeeding outcomes, are needed.
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Affiliation(s)
- Caitlin G. Howe
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, 1 Medical Center Dr, Lebanon, NH, USA
| | - David A. Armstrong
- Department of Dermatology, Dartmouth-Hitchcock Medical Center, 1 Medical Center Dr, Lebanon, NH, USA
- Research Service, VA Medical Center, 215 N Main St, White River Junction, VT, USA
| | - Meghan E. Muse
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, 1 Medical Center Dr, Lebanon, NH, USA
| | - Diane Gilbert-Diamond
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, 1 Medical Center Dr, Lebanon, NH, USA
| | - Jiang Gui
- Department of Biomedical Data Science, Geisel School of Medicine at Dartmouth, 1 Medical Center Dr, Lebanon, NH, USA
| | - Anne G. Hoen
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, 1 Medical Center Dr, Lebanon, NH, USA
| | - Thomas J. Palys
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, 1 Medical Center Dr, Lebanon, NH, USA
| | - Roxanna L. Barnaby
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, 66 College St, Hanover, NH, USA
| | - Bruce A. Stanton
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, 66 College St, Hanover, NH, USA
| | - Brian P. Jackson
- Department of Earth Sciences, Dartmouth College, 6105 Sherman Fairchild Hall, Hanover, NH, USA
| | - Brock C. Christensen
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, 1 Medical Center Dr, Lebanon, NH, USA
| | - Margaret R. Karagas
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, 1 Medical Center Dr, Lebanon, NH, USA
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Hussain S, Khanam T, Ullah S, Aziz F, Sattar A, Hussain I, Saddique MAB, Maqsood A, Ding C, Wang X, Yang J. Assessment and Exposure Analysis of Trace Metals in Different Age Groups of the Male Population in Southern Punjab, Pakistan. TOXICS 2023; 11:958. [PMID: 38133359 PMCID: PMC10747213 DOI: 10.3390/toxics11120958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 11/15/2023] [Accepted: 11/15/2023] [Indexed: 12/23/2023]
Abstract
In developing countries, like Pakistan, the pursuit of urbanization and economic development disrupts the delicate ecosystem, resulting in additional biogeochemical emissions of heavy metals into the human habitat and posing significant health risks. The levels of these trace elements in humans remain unknown in areas at higher risk of pollution in Pakistan. In this investigation, selected trace metals including Copper (Cu), Chromium (Cr), Lead (Pb) Cadmium (Cd), Cobalt (Co), Nickel (Ni), and Arsenic (As) were examined in human hair, urine, and nail samples of different age groups from three major cities (Muzaffargarh, Multan, and Vehari) in Punjab province, Pakistan. The results revealed that the mean concentrations (ppm) of Cr (1.1) and Cu (9.1) in hair was highest in Muzaffargarh. In urine samples, the mean concentrations (μg/L) of Co (93), As (79), Cu (69), Cr (56), Ni (49), Cd (45), and Pb (35) were highest in the Multan region, while As (34) and Cr (26) were highest in Vehari. The mean concentrations (ppm) of Ni (9.2), Cr (5.6), and Pb (2.8), in nail samples were highest in Vehari; however, Multan had the highest Cu (28) concentration (ppm). In urine samples, the concentrations of all the studied metals were within permissible limits except for As (34 µg/L) and Cr (26 µg/L) in Vehari. However, in nail samples, the concentrations of Ni in Multan (8.1 ppm), Muzaffargarh (9 ppm), Vehari (9.2 ppm), and Cd (3.69 ppm) in Muzaffargarh exceeded permissible limits. Overall, the concentrations of metals in urine, nail, and hair samples were higher in adults (39-45 age group). Cr, Cu, and Ni revealed significantly higher concentrations of metals in hair and water in Multan, whereas As in water was significantly (p < 0.001) correlated with urinary As in Multan, indicating that the exposure source was region-specific.
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Affiliation(s)
- Sajjad Hussain
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (S.H.); (S.U.)
- Layyah Institute, University of Lahore, Layyah 31200, Pakistan
| | - Tasawar Khanam
- Ecohealth and Toxicology Laboratory, Department of Biosciences, COMSATS University Islamabad, Islamabad 44000, Pakistan;
- Department of Zoology, University of Chakwal, Chakwal 48800, Pakistan
| | - Subhan Ullah
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (S.H.); (S.U.)
| | - Fouzia Aziz
- Department of Economics, University of Layyah, Layyah 31200, Pakistan
- Department of Economics, Women University, Multan 60000, Pakistan
| | - Abdul Sattar
- Department of Agronomy, Bahauddin Zakariya University, Multan 60800, Pakistan;
| | - Imran Hussain
- Environmental Biotechnology Laboratory, Department of Biotechnology, Abbottabad Campus, COMSATS University Islamabad, Abbottabad 22020, Pakistan;
| | | | - Amna Maqsood
- Institute of Soil and Environmental Sciences, PMAS Arid Agriculture University, Rawalpindi 46300, Pakistan;
| | - Changfeng Ding
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; (C.D.); (X.W.)
| | - Xingxiang Wang
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; (C.D.); (X.W.)
| | - Jianjun Yang
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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Ali MU, Wang C, Li Y, Li R, Yang S, Ding L, Feng L, Wang B, Li P, Wong MH. Heavy metals in fish, rice, and human hair and health risk assessment in Wuhan city, central China. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 328:121604. [PMID: 37061018 DOI: 10.1016/j.envpol.2023.121604] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 03/06/2023] [Accepted: 04/07/2023] [Indexed: 05/09/2023]
Abstract
The current study investigated the concentration of heavy metals (HMs) in human hair associated with fish and rice consumption in Wuhan City, central China. The mean values of As in 8/10 fish species exceeded the food safety standard of 0.015 mg/kg. The mean values (mg/kg) of HMs in rice followed a descending order of Zn (13.7)> Cu (1.9)>Cr (0.51)>As (0.11) >Cd (0.08) >Pb (0.04). The ascending order of HMs for male hair was Cd < As < Cr < Pb < Cu < Zn, while As < Cd < Cr < Pb < Cu < Zn for female. 30% of hair Cr and 22% of hair Zn contents exceeded the recommended values. The middle age (19-44) and adult (45-59) groups were the most vulnerable group, as the concentration for most elements was high in these age groups. A significant correlation was found between fish-eating frequency and hair Zn (r = 0.213; p < 0.05), and As (r = 0.204; p < 0.05). High odd ratios were found in a population with high fish-eating frequency, especially for Pb (7.19), As (3.1), Zn (3.83), and Cd (3.7). A significant non-carcinogenic risk was associated with Cr exposure through consuming herbivores, filter feeders, and omnivorous fish. The cancer risk values of Cd exposure (1.54E-04) via rice consumption and As exposure (1.25E-04) via consumption of omnivores fish indicate precautionary measures.
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Affiliation(s)
- Muhammad Ubaid Ali
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China
| | - Chuan Wang
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China
| | - Yuan Li
- School of Public Health, Guizhou Medical University, Guiyang, 550025, China
| | - Ruolan Li
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China
| | - Shaochen Yang
- Hubei Key Laboratory of Critical Zone Evolution, School of Earth Sciences, China University of Geosciences, Wuhan, 430074, China
| | - Li Ding
- School of Public Health, Guizhou Medical University, Guiyang, 550025, China
| | - Lin Feng
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China
| | - Bo Wang
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China
| | - Ping Li
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China.
| | - Ming Hung Wong
- Consortium on Health, Environment, Education, and Research (CHEER), And Department of Science and Environmental Studies, The Education University of Hong Kong, Tai Po, Hong Kong, China
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Dessie BK, Mehari B, Gari SR, Mihret A, Desta AF, Melaku S, Alamirew T, Walsh CL, Werner D, Zeleke G. Trace Element Levels in Nails of Residents of Addis Ababa Are Shaped by Social Factors and Geography. Biol Trace Elem Res 2023; 201:577-591. [PMID: 35233714 DOI: 10.1007/s12011-022-03181-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 02/21/2022] [Indexed: 02/06/2023]
Abstract
The Akaki catchment in Ethiopia is home to Addis Ababa and about five million people. Its watercourses receive a variety of wastes released by the residents and industries. River water is being used for irrigation, livestock watering, and other domestic purposes. This study tested the hypothesis that the river pollution would be reflected in higher levels of trace elements in the nails of residents living in Akaki-Kality Sub-City in the downstream, as compared to those living in Gullele Sub-City in the upstream of the Akaki catchment. Samples were taken and subsequently analysed for metals using inductively coupled plasma optical emission spectrometry (ICP-OES). The mean concentrations of Fe, Zn, Cu, Mn, Ni, Cr, Pb, and As in nails from Akaki-Kality were 488 ± 49, 106 ± 10, 5.2 ± 0.3, 13 ± 1.5, 11 ± 8, 2.2 ± 0.3, 0.09 ± 0.01, and 0.16 ± 0.01 μg/g, respectively. Likewise, the concentrations of Fe, Zn, Cu, Mn, Ni, Cr, Pb, and As in nails from Gullele were 1035 ± 135, 251 ± 10, 6.6 ± 0.4, 31 ± 3.7, 7.4 ± 1.7, 2.0 ± 0.3, 0.63 ± 0.01, and 0.25 ± 0.01 μg/g, respectively. Co and Cd were not detected. Contrary to the initial hypothesis, higher metal levels were found in nails of residents living in the upstream rather than the downstream area of the catchment. In particular, the concentrations of Fe (p = 0.000), Zn (p = 0.01), and Mn (p = 0.000) were significantly elevated in nails from Gullele and also high in comparison with internationally reported values. Besides, geography and social factors, especially education level, correlated to trace metals in nails. Most of the elements were significantly lower in the nails of individuals with a university degree compared to those who were illiterate or only completed primary school.
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Affiliation(s)
- Bitew K Dessie
- Water and Land Resource Centre, Addis Ababa University, Addis Ababa, Ethiopia.
- Ethiopian Institute of Water Resources, Addis Ababa University, Addis Ababa, Ethiopia.
- College of Natural and Computational Sciences, University of Gondar, P.O. Box 196, Gondar, Ethiopia.
| | - Bewketu Mehari
- College of Natural and Computational Sciences, University of Gondar, P.O. Box 196, Gondar, Ethiopia
| | - Sirak Robele Gari
- Ethiopian Institute of Water Resources, Addis Ababa University, Addis Ababa, Ethiopia
| | - Adane Mihret
- Armauer Hansen Research Institute, Addis Ababa, Ethiopia
| | - Adey F Desta
- Department of Microbial, Cellular and Molecular Biology, Addis Ababa University, Addis Ababa, Ethiopia
| | - Samuel Melaku
- Department of Chemistry, Columbus State University, 4225 University Avenue, Columbus, GA, 31907, USA
| | - Tena Alamirew
- Water and Land Resource Centre, Addis Ababa University, Addis Ababa, Ethiopia
- Ethiopian Institute of Water Resources, Addis Ababa University, Addis Ababa, Ethiopia
| | - Claire L Walsh
- School of Engineering, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - David Werner
- School of Engineering, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Gete Zeleke
- Water and Land Resource Centre, Addis Ababa University, Addis Ababa, Ethiopia
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Quist AJL, Van Horne YO, Farzan SF, Johnston JE. Metal Exposures in Residents Living Near an Urban Oil Drilling Site in Los Angeles, California. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:15981-15989. [PMID: 36288551 PMCID: PMC9670842 DOI: 10.1021/acs.est.2c04926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 10/18/2022] [Accepted: 10/18/2022] [Indexed: 06/16/2023]
Abstract
Urban environmental justice communities are potentially exposed to multiple toxic metals, through contaminated air, soil, water, and food. However, information on metals and their sources is lacking. This study uses non-negative matrix factorization (NMF) in a community-based participatory research study to identify potential sources and to understand how these metals cluster in a population near an urban oil drilling site. We recruited 203 Latinx, Black, and Asian residents who lived within 1 km of an oil drilling site in south Los Angeles and collected toenail clippings to assess exposure to arsenic (As), cadmium (Cd), mercury (Hg), manganese (Mn), nickel (Ni), lead (Pb), and antimony (Sb). Using NMF, we identified three clusters based on concentrations in the participants' toenails. As, Cd, Pb, and Sb grouped together, indicative of an industrial source. A second grouping was composed of Ni and Mn, which may be related to oil drilling. We also identified a third source factor predominantly driven by Hg and As, which may arise from dietary sources. Utilizing NMF, a dimension reduction method, we identified a source factor high in Ni and Mn in residents living in a neighborhood near an active oil drilling site.
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Affiliation(s)
- Arbor J. L. Quist
- Department of Population
and Public Health Sciences, Keck School of Medicine, University of Southern California, 1845 N Soto St, Los Angeles, California90032, United States
| | - Yoshira Ornelas Van Horne
- Department of Population
and Public Health Sciences, Keck School of Medicine, University of Southern California, 1845 N Soto St, Los Angeles, California90032, United States
| | - Shohreh F. Farzan
- Department of Population
and Public Health Sciences, Keck School of Medicine, University of Southern California, 1845 N Soto St, Los Angeles, California90032, United States
| | - Jill E. Johnston
- Department of Population
and Public Health Sciences, Keck School of Medicine, University of Southern California, 1845 N Soto St, Los Angeles, California90032, United States
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Chavez-Garcia JA, Noriega-León A, Alcocer-Zuñiga JA, Robles J, Cruz-Jiménez G, Juárez-Pérez CA, Martinez-Alfaro M. Association between lead source exposure and blood lead levels in some lead manufacturing countries: A systematic review and meta-analysis. J Trace Elem Med Biol 2022; 71:126948. [PMID: 35219028 DOI: 10.1016/j.jtemb.2022.126948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 02/05/2022] [Accepted: 02/08/2022] [Indexed: 11/26/2022]
Abstract
Lead is one of the 10 most toxic chemicals of greatest concern for its effects on public health. Predominantly, in undeveloped countries, high blood lead levels (BLLs) persist in the population. To develop intervention strategies that may reduce lead exposure in populations, it is a priority to know the sources of lead pollution. The objective of this critical review and meta-analysis is to assess whether there is an association between different sources of lead exposure and the mean difference in blood lead levels in people exposed. To identify the major lead source exposure, a statistical analysis was performed on selection studies. This investigation reveals the limited information available on the sources of lead in Mexico and other lead producer countries, such as Croatia, Ecuador, Brazil, South Korea, India, Nigeria, Turkey, and China. Meta-analysis could be performed only in battery, smelting mining, and glazed ceramic workers. Battery manufacturing workers have the highest mean difference level of lead in their blood worldwide. Mexico has the second highest mean difference BLL in battery workers in the world. An interesting difference between the mean difference in BLL in mining workers from uncontrolled industry (-39.38) and controlled industry (-5.68) was found. This difference highlighted the success of applying strict control of lead sources and community education to reduce BLL and its potential harmful effects on human health and the environment. Children living near mining sites have the highest mean difference BLL (-11.1). This analysis may aid in assessing the source of lead exposure associated with a range of BLLs in people. Furthermore, this review highlights several social and cultural patterns associated with lead exposure and lead levels in control populations. These results could help to develop international lead regulations and appropriate public health guidelines to protect people around the world.
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Affiliation(s)
| | | | | | | | | | - Cuauhtémoc Arturo Juárez-Pérez
- Research Unit Health at Work, XXI Century National Medical Center (CMNSXXI), Instituto Mexicano del Seguro Social (IMSS), Mexico City, Mexico
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Yang K, Chen C, Yan Q, Shen X, Jiang L, Ma R, Lu L, Zhu J, Tian Y, Cai W, D'Alton ME, Zhang J, Kahe K. Combined association of early exposure to long-chain n-3 polyunsaturated fatty acids, mercury and selenium with cognitive performance in 1-year-old infants. ENVIRONMENTAL RESEARCH 2022; 207:112186. [PMID: 34627802 DOI: 10.1016/j.envres.2021.112186] [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: 07/20/2021] [Revised: 09/18/2021] [Accepted: 10/04/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Previous studies on long-chain n-3 polyunsaturated fatty acids (LCn3PUFAs) and infant neurodevelopment did not consider effect modifications of mercury (Hg) and selenium (Se). OBJECTIVES To examine the joint association of prenatal LCn3PUFAs, Hg and Se with infant cognitive performance, and to explore whether DNA methylation may explain this potential association. METHODS A total of 484 newborns were enrolled from the Shanghai Birth Cohort with available data on cord blood LCn3PUFA, nail Hg and Se during 2015-2016. Cord blood LCn3PUFA concentrations were assessed by gas chromatography, and nail Hg and Se concentrations were measured using clippings collected within 6 months of birth by inductively coupled plasma mass spectrometry. Five aspects of infant neurodevelopment (communication, gross motor, fine motor, problem-solving, and personal-social skills) were assessed using the Age and Stage Questionnaire (ASQ) at ages 6 and 12 months. Multivariable-adjusted generalized estimating equations models were performed to examine the associations between cord blood LCn3PUFA concentrations and ASQ test scores, and these associations were stratified by nail Hg and Se levels. Epigenome-wide DNA methylation in cord blood was compared in a random subgroup consisting of 19 infants from the highest and 21 from the lowest decile of LCn3PUFA concentrations. RESULTS LCn3PUFAs were not significantly associated with any ASQ test scores. However, in the subgroup with lower Hg (<median 0.13 ppm) and higher Se (≥median 0.87 ppm) levels, infants with higher LCn3PUFA concentrations had higher ASQ scores indicating better performance in gross motor skills [quartile 4 vs. 1: mean difference = 7.78; 95% confidence interval=(3.47, 12.09); Ptrend<0.01; Pinteraction = 0.03]. Additionally, twenty CpG sites were differentially methylated when comparing high to low LCn3PUFA groups. CONCLUSION The association of prenatal LCn3PUFA concentrations with infant neurodevelopment, particularly gross motor skills, may be observed among infants with high Se and low Hg levels.
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Affiliation(s)
- Kefeng Yang
- Department of Nutrition, Xin Hua Hospital Affiliated to School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition, Shanghai, China
| | - Cheng Chen
- Department of Obstetrics and Gynecology, Vagelos College of Physicians and Surgeons, Columbia University, New York, USA; Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, USA
| | - Qi Yan
- Department of Obstetrics and Gynecology, Vagelos College of Physicians and Surgeons, Columbia University, New York, USA
| | - Xiuhua Shen
- Department of Nutrition, Xin Hua Hospital Affiliated to School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition, Shanghai, China
| | - Linlei Jiang
- Instrumental Analysis Platform, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Rui Ma
- MOE-Shanghai Key Laboratory of Children's Environmental Health, Xin Hua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Liping Lu
- Department of Obstetrics and Gynecology, Vagelos College of Physicians and Surgeons, Columbia University, New York, USA; Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, USA
| | - Jie Zhu
- Nutrition and Foods Program, School of Family and Consumer Sciences, Texas State University, San Marcos, TX, USA
| | - Ying Tian
- MOE-Shanghai Key Laboratory of Children's Environmental Health, Xin Hua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Wei Cai
- Department of Nutrition, Xin Hua Hospital Affiliated to School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition, Shanghai, China
| | - Mary E D'Alton
- Department of Obstetrics and Gynecology, Vagelos College of Physicians and Surgeons, Columbia University, New York, USA
| | - Jun Zhang
- MOE-Shanghai Key Laboratory of Children's Environmental Health, Xin Hua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ka Kahe
- Department of Obstetrics and Gynecology, Vagelos College of Physicians and Surgeons, Columbia University, New York, USA; Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, USA.
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10
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Shezi B, Street RA, Webster C, Kunene Z, Mathee A. Heavy Metal Contamination of Soil in Preschool Facilities around Industrial Operations, Kuils River, Cape Town (South Africa). INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19074380. [PMID: 35410061 PMCID: PMC8998666 DOI: 10.3390/ijerph19074380] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 03/30/2022] [Accepted: 03/31/2022] [Indexed: 12/03/2022]
Abstract
The contamination of soil by heavy metals is a potential health risk, especially among susceptible populations. The aim of this study was to measure the levels of heavy metals, identify the contamination levels and possible sources of heavy metals, and evaluate the health risk caused by heavy metals to the children living in Kuils River. Composite samples of soil were collected at 34 preschools. A portable X-ray fluorescence spectrometer was used to measure the levels of metals. Contamination levels were evaluated using a geoaccumulation index (Igeo), enrichment factor (EF), contamination factor (CF) and pollution load index (PLI). The spatial distribution of the Igeo contamination levels was assessed using ArcGIS. Sources of heavy metals and the correlation among metals were assessed using factor analysis and Pearson correlation, respectively. The measured concentrations of metals were used to estimate the health risk for children. The average levels of the metals were 16, 4469, 137, 30, 176, 1547 and 232 mg/kg for arsenic (As), iron (Fe), manganese (Mn), lead (Pb), strontium (Sr), titanium (Ti) and zinc (Zn), respectively. According to Igeo, EF, CF and PLI contamination exist in the study area. The health index (HI) for non-carcinogenic effects showed the ingestion route as the main contributor to the total risk, with the accumulative carcinogenic risk exceeding the maximum acceptable level. To protect the affected communities, and children in particular, this study provides evidence of the need for action, including the institution of mandatory buffer zones between pollutant-generating activities and human settlements.
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Affiliation(s)
- Busisiwe Shezi
- Environment and Health Research Unit, South African Medical Research Council, Johannesburg 2094, South Africa; (C.W.); (Z.K.); (A.M.)
- Department of Environmental Health, Faculty of Health Sciences, University of Johannesburg, Johannesburg 2094, South Africa;
- Correspondence: ; Tel.: +27-12-339-8562
| | - Renée Anne Street
- Department of Environmental Health, Faculty of Health Sciences, University of Johannesburg, Johannesburg 2094, South Africa;
- Environment and Health Research Unit, South African Medical Research Council, Durban 4001, South Africa
| | - Candice Webster
- Environment and Health Research Unit, South African Medical Research Council, Johannesburg 2094, South Africa; (C.W.); (Z.K.); (A.M.)
| | - Zamantimande Kunene
- Environment and Health Research Unit, South African Medical Research Council, Johannesburg 2094, South Africa; (C.W.); (Z.K.); (A.M.)
| | - Angela Mathee
- Environment and Health Research Unit, South African Medical Research Council, Johannesburg 2094, South Africa; (C.W.); (Z.K.); (A.M.)
- Department of Environmental Health, Faculty of Health Sciences, University of Johannesburg, Johannesburg 2094, South Africa;
- Department of Environmental Health, School of Behavioural and Lifestyle Sciences, Faculty of Health Sciences, Nelson Mandela University, Port Elizabeth 6019, South Africa
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11
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Parhizkar G, Khalili Doroodzani A, Dobaradaran S, Ramavandi B, Hashemi SE, Raeisi A, Nabipour I, Keshmiri S, Darabi A, Afrashte S, Khamisipour G, Keshtkar M. Childhood exposure to metal(loid)s in industrial and urban areas along the Persian Gulf using toenail tissue as a biomarker. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 291:118090. [PMID: 34517176 DOI: 10.1016/j.envpol.2021.118090] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 08/21/2021] [Accepted: 08/31/2021] [Indexed: 05/12/2023]
Abstract
Metal(loid)s (MLs) with natural or anthropogenic sources may cause adverse health effects in children. This study aimed to compare the childhood exposure to ΣMLs (essential, non-essential and toxic) in an industrial and an urban area in Southwest Iran using toenail tissue as a biomarker. The present study was carried out with school children in the age range of 7-12 years, who were living in an industrial area in the petrochemical and gas area (PGA) of the Central District of Asaluyeh County and in an urban area (UA) located in the Kaki District. A total of 270 boys and girls were recruited in January to April 2019. The ICP-MS was used for determination of the studied MLs. A multi-linear regression model was constructed to assess the effect of residence area on toenail ML levels. A significantly higher level of ΣMLs in toenail from the PGA was observed compared to the level in the UA (8.839 vs. 7.081 μg/g, β = -0.169 and p < 0.05). However, all of the 15 MLs studied were detected in the toenail samples from both study sites. Significant differences for the mean Cr (β = -0.563), Fe (β = -0.968), Mn (β = -0.501), Ni (β = -0.306), and Pb (β = -0.377) levels were found between toenail samples from the study areas (p < 0.05), with higher levels in the PGA. The results of this study suggest that children in industrial area are prone to a greater risk for ML exposures compared with those living in a non-industrial urban area.
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Affiliation(s)
- Gohar Parhizkar
- Department of Environmental Health Engineering, Faculty of Health and Nutrition, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Atefeh Khalili Doroodzani
- Systems Environmental Health and Energy Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Sina Dobaradaran
- Department of Environmental Health Engineering, Faculty of Health and Nutrition, Bushehr University of Medical Sciences, Bushehr, Iran; Systems Environmental Health and Energy Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran.
| | - Bahman Ramavandi
- Department of Environmental Health Engineering, Faculty of Health and Nutrition, Bushehr University of Medical Sciences, Bushehr, Iran; Systems Environmental Health and Energy Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Seyed Enayat Hashemi
- Department of Environmental Health Engineering, Faculty of Health and Nutrition, Bushehr University of Medical Sciences, Bushehr, Iran; Systems Environmental Health and Energy Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Alireza Raeisi
- Department of Internal Medicine, School of Medicine Shiraz University of Medical Sciences, Iran
| | - Iraj Nabipour
- The Persian Gulf Marine Biotechnology Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Saeed Keshmiri
- Faculty of Medicine, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Amirhossein Darabi
- The Persian Gulf Tropical Medicine Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Sima Afrashte
- Department of Public Health, School of Medical Science, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Gholamreza Khamisipour
- Department of Hematology, Faculty of Allied Medicine, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Mozhgan Keshtkar
- Systems Environmental Health and Energy Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
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12
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Williams PRD, von Stackelberg K, Guerra Lopez MG, Sanchez-Triana E. Risk Analysis Approaches to Evaluating Health Impacts from Land-Based Pollution in Low- and Middle-Income Countries. RISK ANALYSIS : AN OFFICIAL PUBLICATION OF THE SOCIETY FOR RISK ANALYSIS 2021; 41:1971-1986. [PMID: 33565672 DOI: 10.1111/risa.13699] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 01/05/2021] [Accepted: 01/15/2021] [Indexed: 06/12/2023]
Abstract
Risk analysis offers a useful framework for evaluating and managing environmental health risks across different settings. In this Perspective, we question whether the principles and practice of risk analysis could be beneficial in the context of land-based pollution in low- and middle-income countries (LMICs) to better support risk-based decision making. Specifically, potential health and economic impacts from land-based pollution in LMICs has become an increasing issue of concern due to widespread environmental contamination from active and legacy operations, particularly informal activities that are becoming increasingly dispersed throughout communities, such as used lead acid battery recycling, artisanal and small-scale gold mining, and small-scale tanneries. However, the overall magnitude and scale of the public health problem arising from these sources remains highly uncertain and poorly characterized and cannot be compared to land-based pollution in high-income countries due to unique factors. This lack of knowledge has negatively affected the political priority and level of funding for risk mitigation actions targeting land-based pollution in these countries. Our primary objective is to raise further awareness of this emerging issue among risk analysts and decisionmakers and to advocate for more robust and focused research. Here, we highlight the types of industries and activities contributing to land-based pollution in LMICs and describe key findings and knowledge and data gaps that have hindered a fuller understanding of this issue. We also discuss how several risk assessment and risk management approaches might be useful in this resource-constrained context. We conclude that a combination of risk analysis approaches may be worthwhile, but more work is needed to determine which methods or tools will be most informative, technically feasible, and cost-effective for identifying, prioritizing, and mitigating land-based pollution in LMICs. Affected researchers, funding agencies, and local or national governments will need to work together to develop improved study designs and risk mitigation strategies.
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13
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Blood Lead Levels and Associated Sociodemographic Factors among Children Aged 3 to 14 Years Living near Zinc and Lead Mines in Two Provinces in Vietnam. BIOMED RESEARCH INTERNATIONAL 2021; 2021:5597867. [PMID: 34327230 PMCID: PMC8277519 DOI: 10.1155/2021/5597867] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 03/30/2021] [Accepted: 06/25/2021] [Indexed: 11/29/2022]
Abstract
Lead poisoning in children is a major public health concern worldwide, especially in developing countries. We conducted a cross-sectional study on 403 children aged from 3 to 14 years living nearly zinc–lead mining areas in two provinces in Vietnam (Bac Kan and Thai Nguyen) from 06/2016 to 10/2016 to identify risk factors for lead contamination. Results. The proportion of children with blood lead levels (BLLs) ≥ 10 μg/dL was 80.51% in Bac Kan and 50% in Thai Nguyen; the mean blood lead level for children was 14.41 ± 9.42 μg/dL. In linear regression analyses, the body mass index was negatively associated with elevated BLLs with r = −0.404, p < 0.05 (95% CI: -0.801, -0.006). In multivariable regression analysis, several risk factors were associated with lead contamination including male sex (aOR = 2.44, 95% CI: 1.13-5.24, p = 0.02), play areas in Bac Kan (aOR = 2.3 (1.02-5.17), p = 0.04), proximity of children's home of less than 2 kilometers from the mine (aOR = 2.90 (1.54-5.44), p = 0.001), and inattentive symptoms in Thai Nguyen (aOR = 7.85, 95% CI 3.49-17.69, p = 0.001). Environmental factors, including lead concentrations in the soil and ambient air samples in both locations, are many times higher than Vietnamese standards.
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14
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Salcedo-Bellido I, Gutiérrez-González E, García-Esquinas E, Fernández de Larrea-Baz N, Navas-Acien A, Téllez-Plaza M, Pastor-Barriuso R, Lope V, Gómez-Ariza JL, García-Barrera T, Pollán M, Jiménez Moleón JJ, Pérez-Gómez B. Toxic metals in toenails as biomarkers of exposure: A review. ENVIRONMENTAL RESEARCH 2021; 197:111028. [PMID: 33753073 DOI: 10.1016/j.envres.2021.111028] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 03/13/2021] [Accepted: 03/14/2021] [Indexed: 05/04/2023]
Abstract
Toenails have been used as biomarkers of exposure to toxic metals, but their validity for this purpose is not yet clear and might differ depending on the specific agent. To evaluate this issue, we reviewed the literature on: a) the time-window of exposure reflected by toenails; b) the reproducibility of toenail toxic-metal levels in repeated measures over time; c) their relationship with other biomarkers of exposure, and; d) their association with potential determinants (i.e. sociodemographic, anthropometric, or lifestyle characteristics) or with sources of exposure like diet or environmental pollution. Thus, we performed a systematic review, searching for articles that provided original data for levels of any of the following toxic metals in toenails: aluminum, beryllium, cadmium, chromium, mercury, nickel, lead, thallium and uranium. We identified 88 articles, reporting data from 67 different research projects, which were quite heterogeneous with regard to population profile, sample size and analytical technique. The most commonly studied metal was mercury. Concerning the time-window of exposure explored by toenails, some reports indicate that toenail cadmium, nickel and lead may reflect exposures that occurred 7-12 months before sampling. For repeated samples obtained 1-6 years apart, the range of intraindividual correlation coefficients of aluminum, chromium and mercury was 0.33-0.56. The correlation of toxic metal concentrations between toenails and other matrices was higher for hair and fingernails than for urine or blood. Mercury levels were consistently associated with fish intake, while other toxic metals were occasionally associated with specific sources (e.g. drinking water, place of residence, environmental pollution, and occupation). The most frequently evaluated health endpoints were cardiovascular diseases, cancer, and central nervous system diseases. Available data suggest that toenail mercury levels reflected long-term exposures and showed positive associations with fish intake. The lack of standardization in sample collection, quality control, analytical techniques and procedures - along with the heterogeneity and conflicting results among studies - mean it is still difficult to conclude that toenails are a good biomarker of exposure to toxic metals. Further studies are needed to draw solid conclusions about the suitability of toenails as biomarkers of exposure to toxic metals.
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Affiliation(s)
- Inmaculada Salcedo-Bellido
- Department of Preventive Medicine and Public Health, University of Granada, Av. de La Investigación, 11, 18016, Granada, Spain; Instituto de Investigación Biosanitaria ibs. GRANADA, Spain; Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP), Monforte de Lemos 5, 28029, Madrid, Spain.
| | - Enrique Gutiérrez-González
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP), Monforte de Lemos 5, 28029, Madrid, Spain; Public Health & Preventive Medicine Teaching Unit, National School of Public Health, Carlos III Institute of Health, Monforte de Lemos 5, 28029, Madrid, Spain; Spanish Agency of Food Safety and Nutrition, Ministry of Consumer Affairs, Alcalá, 56, 28014, Madrid, Spain
| | - Esther García-Esquinas
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP), Monforte de Lemos 5, 28029, Madrid, Spain; Department of Preventive Medicine and Public Health, Universidad Autónoma de Madrid, C/ Arzobispo Morcillo 4, 28029, Madrid, Spain
| | - Nerea Fernández de Larrea-Baz
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP), Monforte de Lemos 5, 28029, Madrid, Spain; Department of Epidemiology of Chronic Diseases, National Centre for Epidemiology, Carlos III Institute of Health, Monforte de Lemos 5, 28029, Madrid, Spain
| | - Ana Navas-Acien
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, 722 W 168th St, New York, NY, 10032, USA
| | - María Téllez-Plaza
- Department of Epidemiology of Chronic Diseases, National Centre for Epidemiology, Carlos III Institute of Health, Monforte de Lemos 5, 28029, Madrid, Spain
| | - Roberto Pastor-Barriuso
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP), Monforte de Lemos 5, 28029, Madrid, Spain; Department of Epidemiology of Chronic Diseases, National Centre for Epidemiology, Carlos III Institute of Health, Monforte de Lemos 5, 28029, Madrid, Spain
| | - Virginia Lope
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP), Monforte de Lemos 5, 28029, Madrid, Spain; Department of Epidemiology of Chronic Diseases, National Centre for Epidemiology, Carlos III Institute of Health, Monforte de Lemos 5, 28029, Madrid, Spain
| | - José Luis Gómez-Ariza
- Department of Chemistry, Faculty of Experimental Sciences, Campus El Carmen, University of Huelva, Fuerzas Armadas, Ave., 21007, Huelva, Spain; Research Center for Natural Resources, Health and the Environment, University of Huelva, Spain
| | - Tamara García-Barrera
- Department of Chemistry, Faculty of Experimental Sciences, Campus El Carmen, University of Huelva, Fuerzas Armadas, Ave., 21007, Huelva, Spain; Research Center for Natural Resources, Health and the Environment, University of Huelva, Spain
| | - Marina Pollán
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP), Monforte de Lemos 5, 28029, Madrid, Spain; Department of Epidemiology of Chronic Diseases, National Centre for Epidemiology, Carlos III Institute of Health, Monforte de Lemos 5, 28029, Madrid, Spain
| | - José Juan Jiménez Moleón
- Department of Preventive Medicine and Public Health, University of Granada, Av. de La Investigación, 11, 18016, Granada, Spain; Instituto de Investigación Biosanitaria ibs. GRANADA, Spain; Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP), Monforte de Lemos 5, 28029, Madrid, Spain
| | - Beatriz Pérez-Gómez
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP), Monforte de Lemos 5, 28029, Madrid, Spain; Public Health & Preventive Medicine Teaching Unit, National School of Public Health, Carlos III Institute of Health, Monforte de Lemos 5, 28029, Madrid, Spain; Department of Epidemiology of Chronic Diseases, National Centre for Epidemiology, Carlos III Institute of Health, Monforte de Lemos 5, 28029, Madrid, Spain.
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15
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Van Horne YO, Farzan SF, Johnston JE. Metal-mixtures in toenails of children living near an active industrial facility in Los Angeles County, California. JOURNAL OF EXPOSURE SCIENCE & ENVIRONMENTAL EPIDEMIOLOGY 2021; 31:427-441. [PMID: 33935287 PMCID: PMC8893014 DOI: 10.1038/s41370-021-00330-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 04/01/2021] [Accepted: 04/08/2021] [Indexed: 05/15/2023]
Abstract
BACKGROUND Children residing in communities near metalworking industries are vulnerable to multiple toxic metal exposures. Understanding biomarkers of exposure to multiple toxic metals is important to characterize cumulative burden and to distinguish potential exposure sources in such environmental justice neighborhoods impacted by industrial operations. Exposure to metal mixtures has not been well-characterized among children residing in the United States, and is understudied in communities of color. METHODS In this study we used toenail clippings, a noninvasive biomarker, to assess exposure to arsenic (As), cadmium (Cd), mercury (Hg), manganese (Mn), lead (Pb), antimony (Sb), selenium (Se), and vanadium (V). We used nonnegative matrix factorization (NMF) to identify "source" signatures and patterns of exposure among predominantly working class Latinx children residing near an industrial corridor in Southeast Los Angeles County. Additionally, we investigated the association between participant demographic, spatial, and dietary characteristics with identified metal signatures. RESULTS Through NMF, we identified three groupings (source factors) for the metal concentrations in children's toenails. A grouping composed of Sb, Pb, As, and Cd, was identified as a potential industrial source factor, reflective of known airborne elemental emissions in the industrial corridor. We further identified a manganese source factor primarily composed of Mn, and a potential dietary source factor driven by Se and Hg. We observed differences in the industrial source factor by age of participants, while the dietary source factor varied by neighborhood. CONCLUSION Utilizing an unsupervised dimension reduction technique (NMF), we identified a "source signature" of contamination in toenail samples from children living near metalworking industry. Investigating patterns and sources of exposures in cumulatively burdened communities is necessary to identify appropriate public health interventions.
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Affiliation(s)
- Yoshira Ornelas Van Horne
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Shohreh F Farzan
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Jill E Johnston
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.
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16
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Shih YH, Howe CG, Scannell Bryan M, Shahriar M, Kibriya MG, Jasmine F, Sarwar G, Graziano JH, Persky VW, Jackson B, Ahsan H, Farzan SF, Argos M. Exposure to metal mixtures in relation to blood pressure among children 5-7 years old: An observational study in Bangladesh. Environ Epidemiol 2021; 5:e135. [PMID: 33778363 PMCID: PMC7939402 DOI: 10.1097/ee9.0000000000000135] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 01/15/2021] [Indexed: 02/07/2023] Open
Abstract
Hypertension in later life, a significant risk factor for cardiovascular disease, has been linked to elevated blood pressure in early life. Exposure to metals may influence childhood blood pressure; however, previous research is limited and has mainly focused on evaluating the toxicity of single metal exposures. This study evaluates the associations between exposure to metal mixtures and blood pressure among Bangladeshi children age 5-7 years. METHODS We investigated the associations of 17 toenail metal concentrations with blood pressure using linear regression models. Principal component analysis (PCA), weighted quantile sum (WQS) regression, and Bayesian kernel machine regression (BKMR) were conducted as secondary analyses. RESULTS Associations were observed for selenium with diastolic blood pressure (per doubling of exposure β = 2.91, 95% confidence interval [CI] = 1.08, 4.75), molybdenum with systolic (β = 0.33, 95% CI = 0.05, 0.61) and diastolic blood pressure (β = 0.39, 95% CI = 0.12, 0.66), tin with systolic blood pressure (β = -0.33, 95% CI = -0.60, -0.06), and mercury with systolic (β = -0.83, 95% CI = -1.49, -0.17) and diastolic blood pressure (β = -0.89, 95% CI = -1.53, -0.26). Chromium was associated with diastolic blood pressure among boys only (β = 1.10, 95% CI = 0.28, 1.92, P for interaction = 0.02), and copper was associated with diastolic blood pressure among girls only (β = -1.97, 95% CI = -3.63, -0.32, P for interaction = 0.01). These findings were largely robust to the secondary analyses that utilized mixture modeling approaches (PCA, WQS, and BKMR). CONCLUSIONS Future prospective studies are needed to investigate further the impact of early life exposure to metal mixtures on children's blood pressure trajectories and cardiovascular disease risk later in life.
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Affiliation(s)
- Yu-Hsuan Shih
- Division of Epidemiology and Biostatistics, School of Public Health, University of Illinois Chicago, Chicago, Illinois
| | - Caitlin G. Howe
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, Dartmouth College, Lebanon, New Hampshire
| | - Molly Scannell Bryan
- Division of Epidemiology and Biostatistics, School of Public Health, University of Illinois Chicago, Chicago, Illinois
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, Dartmouth College, Lebanon, New Hampshire
- Institute for Minority Health Research, College of Medicine, University of Illinois Chicago, Chicago, Illinois
- UChicago Research Bangladesh, Dhaka, Bangladesh
- Department of Public Health Sciences, University of Chicago, Chicago, Illinois
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, New York
- Trace Element Analysis Core Laboratory, Department of Earth Sciences, Dartmouth College, Hanover, New Hampshire
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
| | | | - Muhammad G. Kibriya
- Department of Public Health Sciences, University of Chicago, Chicago, Illinois
| | - Farzana Jasmine
- Department of Public Health Sciences, University of Chicago, Chicago, Illinois
| | | | - Joseph H. Graziano
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, New York
| | - Victoria W. Persky
- Division of Epidemiology and Biostatistics, School of Public Health, University of Illinois Chicago, Chicago, Illinois
| | - Brian Jackson
- Trace Element Analysis Core Laboratory, Department of Earth Sciences, Dartmouth College, Hanover, New Hampshire
| | - Habibul Ahsan
- Department of Public Health Sciences, University of Chicago, Chicago, Illinois
| | - Shohreh F. Farzan
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Maria Argos
- Division of Epidemiology and Biostatistics, School of Public Health, University of Illinois Chicago, Chicago, Illinois
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17
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Signes-Pastor AJ, Gutiérrez-González E, García-Villarino M, Rodríguez-Cabrera FD, López-Moreno JJ, Varea-Jiménez E, Pastor-Barriuso R, Pollán M, Navas-Acien A, Pérez-Gómez B, Karagas MR. Toenails as a biomarker of exposure to arsenic: A review. ENVIRONMENTAL RESEARCH 2021; 195:110286. [PMID: 33075355 PMCID: PMC7987585 DOI: 10.1016/j.envres.2020.110286] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 09/26/2020] [Accepted: 09/27/2020] [Indexed: 05/04/2023]
Abstract
This systematic review summarizes the current evidence related to the reliability of toenail total arsenic concentrations (thereafter "arsenic") as a biomarker of long-term exposure. Specifically, we reviewed literature on consistency of repeated measures over time, association with other biomarkers and metal concentrations, factors influencing concentrations, and associations with health effects. We identified 129 papers containing quantitative original data on arsenic in toenail samples covering populations from 29 different countries. We observed geographic differences in toenail arsenic concentrations, with highest median or mean concentrations in Asian countries. Arsenic-contaminated drinking water, occupational exposure or living in specific industrial areas were associated with an increased toenail arsenic content. The effects of other potential determinants and sources of arsenic exposure including diet, gender and age on the concentrations in toenails need further investigations. Toenail arsenic was correlated with the concentrations in hair and fingernails, and with urine arsenic mainly among highly exposed populations with a toenail mean or median ≥1 μg/g. Overall, there is a growing body of evidence suggesting that arsenic content from a single toenail sample may reflect long-term internal dose-exposure. Toenail arsenic can serve as a reliable measure of toxic inorganic arsenic exposure in chronic disease research, particularly promising for cancer and cardiovascular conditions.
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Affiliation(s)
- Antonio J Signes-Pastor
- Department of Epidemiology, Geisel School of Medicine, Dartmouth College, 1 Medical Center Dr, Williamson Translational Research Bldg, Lebanon NH, 03756, USA.
| | - Enrique Gutiérrez-González
- Spanish Agency of Food Safety and Nutrition, Ministry of Consumer Affairs, Alcalá, 56, 28014, Madrid, Spain; Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP), Monforte de Lemos 5, 28029, Madrid, Spain
| | - Miguel García-Villarino
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP), Monforte de Lemos 5, 28029, Madrid, Spain; Unit of Molecular Cancer Epidemiology, University Institute of Oncology of the Principality of Asturias (IUOPA) - Department of Medicine, University of Oviedo, Julian Clavería Street s/n, 33006, Oviedo, Asturias, Spain
| | - Francisco D Rodríguez-Cabrera
- Public Health Teaching Unit, National School of Public Health, Carlos III Institute of Health, Monforte de Lemos 5, 28029. Madrid, Spain
| | - Jorge J López-Moreno
- Public Health Teaching Unit, National School of Public Health, Carlos III Institute of Health, Monforte de Lemos 5, 28029. Madrid, Spain
| | - Elena Varea-Jiménez
- Department of Epidemiology of Chronic Diseases, National Centre for Epidemiology, Carlos III Institute of Health, Monforte de Lemos 5, 28029, Madrid, Spain
| | - Roberto Pastor-Barriuso
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP), Monforte de Lemos 5, 28029, Madrid, Spain; Department of Epidemiology of Chronic Diseases, National Centre for Epidemiology, Carlos III Institute of Health, Monforte de Lemos 5, 28029, Madrid, Spain
| | - Marina Pollán
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP), Monforte de Lemos 5, 28029, Madrid, Spain; Department of Epidemiology of Chronic Diseases, National Centre for Epidemiology, Carlos III Institute of Health, Monforte de Lemos 5, 28029, Madrid, Spain
| | - Ana Navas-Acien
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, New York, NY, USA
| | - Beatriz Pérez-Gómez
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP), Monforte de Lemos 5, 28029, Madrid, Spain; Public Health Teaching Unit, National School of Public Health, Carlos III Institute of Health, Monforte de Lemos 5, 28029. Madrid, Spain; Department of Epidemiology of Chronic Diseases, National Centre for Epidemiology, Carlos III Institute of Health, Monforte de Lemos 5, 28029, Madrid, Spain
| | - Margaret R Karagas
- Department of Epidemiology, Geisel School of Medicine, Dartmouth College, 1 Medical Center Dr, Williamson Translational Research Bldg, Lebanon NH, 03756, USA
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18
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Oliveira AS, Costa EAC, Pereira EC, Freitas MAS, Freire BM, Batista BL, Luz MS, Olympio KPK. The applicability of fingernail lead and cadmium levels as subchronic exposure biomarkers for preschool children. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 758:143583. [PMID: 33243496 DOI: 10.1016/j.scitotenv.2020.143583] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 10/18/2020] [Accepted: 11/02/2020] [Indexed: 06/11/2023]
Abstract
Preschool children are exposed daily to metals in their homes and at daycare centers (DCC). Metal exposure and health effects are associated even at low levels, and children comprise a group of public health concern. Nail metals have been studied for exposure biomonitoring and compared to other biological media. The aim of this study was to explore the applicability of preschool fingernail lead and cadmium as subchronic exposure biomarkers. Nail lead and cadmium levels (NLL and NCL) of 602 preschool children (age: 1-4 years) who attended 21 DCC in São Paulo, Brazil, in 2013 were analyzed. Results were compared against blood lead and cadmium levels (BLL and BCL) found in a previous study. Inductively coupled plasma mass spectrometry (ICP-MS) analyses were performed for both samples. DCC and metal contaminated sites (MCS) were georeferencing. Logistic regression tests were applied to verify associations between nail metal levels and risk factors (sex, age, maternal education, secondary smoking, DCC geographic district, vehicle flow density, relative altitude and distance between DCC and nearest MCS) (p < 0.05). BLL was stratified by exposure level (low: <5 μg.dL-1; high: >13.9 μg.dL-1; medium: ≥5 μg.dL-1 and ≤13.9 μg.dL-1) and also tested the associations in order to verify if nail lead levels are affected by exposure intensity defined by blood metals concentrations. Radius distance and relative altitude of DCC to nearest MCS were associated with high NLL and NCL. Abnormal appearance of nails was associated with high NLL and low NCL. Lead and cadmium exposure magnitude had no significant impact on NLL. NLL should only be used for initial screening, and when financial resources are scarce, especially in areas located near contaminated sites. Preschool children were co-exposed to both lead and cadmium, reinforcing the need for broader studies evaluating exposure to environmental pollutants for more than one chemical element.
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Affiliation(s)
- A S Oliveira
- Departamento de Saúde Ambiental, Faculdade de Saúde Pública, Universidade de São Paulo, Av. Dr. Arnaldo, 715, Cerqueira César, CEP 01246-904 São Paulo, SP, Brazil..
| | - E A C Costa
- Centro de Engenharia, Modelagem e Ciências Sociais Aplicadas, Universidade Federal do ABC, Avenida dos Estados, 5001, Santa Terezinha, CEP 09210-580 Santo André, SP, Brazil.
| | - E C Pereira
- Departamento de Saúde Ambiental, Faculdade de Saúde Pública, Universidade de São Paulo, Av. Dr. Arnaldo, 715, Cerqueira César, CEP 01246-904 São Paulo, SP, Brazil..
| | - M A S Freitas
- Laboratório de Processos Metalúrgicos, Centro de Tecnologia em Metalurgia e Materiais, Instituto de Pesquisas Tecnológicas do Estado de São Paulo, Av. Prof. Almeida Prado, 532, Cidade Universitária, Butantã, CEP 05508-901 São Paulo, SP, Brazil.
| | - B M Freire
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados, 5001, Santa Terezinha, CEP 09210-580 Santo André, SP, Brazil.
| | - B L Batista
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados, 5001, Santa Terezinha, CEP 09210-580 Santo André, SP, Brazil.
| | - M S Luz
- Laboratório de Processos Metalúrgicos, Centro de Tecnologia em Metalurgia e Materiais, Instituto de Pesquisas Tecnológicas do Estado de São Paulo, Av. Prof. Almeida Prado, 532, Cidade Universitária, Butantã, CEP 05508-901 São Paulo, SP, Brazil.
| | - K P K Olympio
- Departamento de Saúde Ambiental, Faculdade de Saúde Pública, Universidade de São Paulo, Av. Dr. Arnaldo, 715, Cerqueira César, CEP 01246-904 São Paulo, SP, Brazil..
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19
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Dessie BK, Melaku S, Robele Gari S, Ayele BT, Desta AF, Mihret A. Evaluation of toxic elements in nails of tannery workers in Addis Ababa, Ethiopia. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105589] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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20
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Dantzer J, Ryan P, Yolton K, Parsons PJ, Palmer CD, Cecil K, Unrine JM. A comparison of blood and toenails as biomarkers of children's exposure to lead and their correlation with cognitive function. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 700:134519. [PMID: 31698272 PMCID: PMC6939637 DOI: 10.1016/j.scitotenv.2019.134519] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 09/16/2019] [Accepted: 09/16/2019] [Indexed: 05/25/2023]
Abstract
This study sought to compare lead (Pb) concentrations in toenails and blood and to investigate the association of each biomarker with children's cognitive function. Toenails and whole blood samples were collected from 224 twelve-year-old children, and their full-scale intelligence quotient (FSIQ) was assessed using the Wechsler Intelligence Scale for Children-4th edition. Inductively coupled plasma-mass spectrometry was used to determine blood (BPb) and toenail (TPb) Pb concentrations. Log BPb and Log TPb were significantly correlated (r2 = 0.49, p < 0.001). In unadjusted analyses, both log-transformed BPb and TPb were significantly associated with decreased FSIQ, but BPb accounted for approximately quadruple the FSIQ scores' variability than log-transformed TPb (model R2 = 0.12 and R2 = 0.03, respectively). After adjusting for neighborhood deprivation, caregiver intelligence (assessed with the Wechsler Abbreviated Scale of Intelligence-2nd edition), and child BMI, BPb remained significantly associated with decreased FSIQ, while TPb did not (p = 0.16). These results suggest that while concentrations of Pb in blood and toenails are correlated, TPb does not predict cognitive outcomes at these exposure levels. With caution and in conjunction with BPb, TPb may be used as a population-based biomarker of Pb exposure.
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Affiliation(s)
- Julianna Dantzer
- Department of Plant and Soil Sciences, University of Kentucky, Lexington, KY, USA
| | - Patrick Ryan
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA; Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Kimberly Yolton
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA; Division of General and Community Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Patrick J Parsons
- Laboratory of Inorganic and Nuclear Chemistry, Wadsworth Center, New York State Department of Health, Albany, NY, USA; Department of Environmental Health Sciences, School of Public Health, The University of Albany, Rennselaer, NY, USA
| | - Christopher D Palmer
- Laboratory of Inorganic and Nuclear Chemistry, Wadsworth Center, New York State Department of Health, Albany, NY, USA; Department of Environmental Health Sciences, School of Public Health, The University of Albany, Rennselaer, NY, USA
| | - Kim Cecil
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA; Imaging Research Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Jason M Unrine
- Department of Plant and Soil Sciences, University of Kentucky, Lexington, KY, USA; Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY, USA.
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21
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Gutiérrez-González E, García-Esquinas E, de Larrea-Baz NF, Salcedo-Bellido I, Navas-Acien A, Lope V, Gómez-Ariza JL, Pastor R, Pollán M, Pérez-Gómez B. Toenails as biomarker of exposure to essential trace metals: A review. ENVIRONMENTAL RESEARCH 2019; 179:108787. [PMID: 31610392 PMCID: PMC8164381 DOI: 10.1016/j.envres.2019.108787] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 09/26/2019] [Accepted: 09/30/2019] [Indexed: 05/19/2023]
Abstract
Health problems associated with essential trace metals can result from both inadequate (i.e., low intake) and excessive exposures (i.e., from environmental and/or occupational source). Thus, measuring the exposure level is a real challenge for epidemiologists. Among non-invasive biomarkers that intend to measure long-term exposure to essential trace metals, the toenail is probably the biological matrix with the greatest potential. This systematic review collects the current evidence regarding the validity of toenail clippings as exposure biomarker for trace metals such as boron, cobalt, copper, iron, manganese, molybdenum, selenium, silicon, vanadium and zinc. Special attention was paid to the time-window of exposure reflected by the toenail, the intraindividual variability in exposure levels over time in this matrix, and the relationship of toenail with other biomarkers, personal characteristics and environmental sources. Our search identified 139 papers, with selenium and zinc being the most studied elements. The variability among studies suggests that toenail levels may reflect different degrees of exposure and probably correspond to exposures occurred 3-12 months before sampling (i.e., for manganese/selenium). Few studies assessed the reproducibility of results over time and, for samples obtained 1-6 years apart, the correlation coefficient were between 0.26 and 0.66. Trace metal levels in toenails did not correlate well with those in the blood and urine and showed low-moderate correlation with those in the hair and fingernails. Available data suggests that for some elements (Se, Mn, Zn) toenail concentrations reflect long-term external exposures in fairly reproducible levels, while for other metals, this association has not yet been assessed. Among dietary factors, only toenail selenium showed clear associations with the intake of supplements or specific foods. The toenail levels could also represent occupational exposure, for instance, Mn exposure in welders. The scarcity of information on other essential trace elements, together with the great heterogeneity among studies makes the validation of the usage of toenails as biomarkers of exposure to these elements difficult. Standardization of sample collection, quality control, analytical techniques and reporting procedures might facilitate further research focused on the clear understanding of the significance of essential levels in this promising matrix and would enhance its utility in epidemiological research.
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Affiliation(s)
- Enrique Gutiérrez-González
- Public Health & Preventive Medicine Teaching Unit, National School of Public Health, Carlos III Institute of Health, Monforte de Lemos 5, 28029, Madrid, Spain; Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP), Monforte de Lemos 5, 28029, Madrid, Spain.
| | - Esther García-Esquinas
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP), Monforte de Lemos 5, 28029, Madrid, Spain; Department of Preventive Medicine and Public Health, Universidad Autónoma de Madrid, C/ Arzobispo Morcillo 4, 28029, Madrid, Spain
| | - Nerea Fernández de Larrea-Baz
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP), Monforte de Lemos 5, 28029, Madrid, Spain; Department of Epidemiology of Chronic Diseases, National Centre for Epidemiology, Carlos III Institute of Health, Monforte de Lemos 5, 28029, Madrid, Spain
| | - Inmaculada Salcedo-Bellido
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP), Monforte de Lemos 5, 28029, Madrid, Spain; Department of Preventive Medicine and Public Health, University of Granada & Instituto de Investigación Biosanitaria de Granada, Av. de La Investigación, 11, 18016, Granada, Spain
| | - Ana Navas-Acien
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, 722 W 168th St, New York, NY, 10032, USA
| | - Virginia Lope
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP), Monforte de Lemos 5, 28029, Madrid, Spain; Department of Epidemiology of Chronic Diseases, National Centre for Epidemiology, Carlos III Institute of Health, Monforte de Lemos 5, 28029, Madrid, Spain
| | - José Luis Gómez-Ariza
- Department of Chemistry, Faculty of Experimental Sciences, University of Huelva, Campus de El Carmen, Research Center on Health and Environment (RENSMA), C/ Menéndez Pelayo, 21002, Huelva, Spain
| | - Roberto Pastor
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP), Monforte de Lemos 5, 28029, Madrid, Spain; Department of Epidemiology of Chronic Diseases, National Centre for Epidemiology, Carlos III Institute of Health, Monforte de Lemos 5, 28029, Madrid, Spain
| | - Marina Pollán
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP), Monforte de Lemos 5, 28029, Madrid, Spain; Department of Epidemiology of Chronic Diseases, National Centre for Epidemiology, Carlos III Institute of Health, Monforte de Lemos 5, 28029, Madrid, Spain
| | - Beatriz Pérez-Gómez
- Public Health & Preventive Medicine Teaching Unit, National School of Public Health, Carlos III Institute of Health, Monforte de Lemos 5, 28029, Madrid, Spain; Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP), Monforte de Lemos 5, 28029, Madrid, Spain; Department of Epidemiology of Chronic Diseases, National Centre for Epidemiology, Carlos III Institute of Health, Monforte de Lemos 5, 28029, Madrid, Spain.
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22
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O'Brien KM, White AJ, Sandler DP, Jackson BP, Karagas MR, Weinberg CR. Do Post-breast Cancer Diagnosis Toenail Trace Element Concentrations Reflect Prediagnostic Concentrations? Epidemiology 2019; 30:112-119. [PMID: 30256233 PMCID: PMC6275107 DOI: 10.1097/ede.0000000000000927] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
BACKGROUND Exposure to trace elements may affect health, including breast cancer risk. Trace element levels in toenails are potentially useful biomarkers of exposure, but their reliability is not established. We assessed the reproducibility of toenail element concentrations over time and whether concentrations change following a breast cancer diagnosis. METHODS We assessed trace element levels in toenails collected at two time points from 221 women (111 with and 110 without an intervening breast cancer diagnosis). We measured levels of arsenic, cadmium, chromium, cobalt, copper, iron, mercury, manganese, molybdenum, nickel, lead, antimony, selenium, tin, vanadium, and zinc using inductively coupled plasma mass spectrometry in samples collected at baseline and 4-10 years later. We compared trace element concentrations over time using Spearman's rank correlation coefficient (R). We used linear models to examine the magnitude and direction of changes and the influence of a breast cancer diagnosis. RESULTS Overall, we observed positive correlations (R = 0.18-0.71) between paired samples for all trace elements. However, nickel (R = -0.02) and antimony (R = 0.12) were not correlated among cases. We observed decreases in cadmium, chromium, mercury, manganese, molybdenum, nickel, and lead between baseline and follow-up, but case status was unrelated to these changes. The declines are consistent with decreases over calendar time rather than age time. CONCLUSIONS Toenail trace element concentrations were correlated over time, but many elements showed systematic decreases by calendar year. Aside from nickel and antimony, postdiagnostic toenail levels correlated with prediagnostic levels, providing support for using postdiagnostic toenail samples in retrospective studies.
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Affiliation(s)
- Katie M O'Brien
- From the Biostatistics and Computational Biology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC
| | - Alexandra J White
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC
| | - Dale P Sandler
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC
| | - Brian P Jackson
- Department of Earth Sciences, Dartmouth College, Hanover, NH
| | - Margaret R Karagas
- Department of Epidemiology and Children's Environmental Health and Disease Prevention Research Center at Dartmouth, Geisel School of Medicine at Dartmouth, Lebanon, NH
| | - Clarice R Weinberg
- From the Biostatistics and Computational Biology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC
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23
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Farzan SF, Howe CG, Chen Y, Gilbert-Diamond D, Cottingham KL, Jackson BP, Weinstein AR, Karagas MR. Prenatal lead exposure and elevated blood pressure in children. ENVIRONMENT INTERNATIONAL 2018; 121:1289-1296. [PMID: 30389381 PMCID: PMC6279470 DOI: 10.1016/j.envint.2018.10.049] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 09/25/2018] [Accepted: 10/24/2018] [Indexed: 05/19/2023]
Abstract
Growing evidence suggests that environmental exposures can influence blood pressure over the course of a lifetime. Exposure to toxic metals, such as lead (Pb) and arsenic (As), has been associated with increased blood pressure in adults, but few studies have examined the impacts of in utero and early life toxic metals exposure on blood pressure in childhood. As subclinical vascular changes are thought to begin early in life, it is possible that in utero toxic metals exposure may play a role in blood pressure homeostasis. In the ongoing New Hampshire Birth Cohort Study, we investigated whether in utero exposure to Pb and As was associated with measures of blood pressure in a total of 323 young children (mean age 5.5 years, SD 0.4). Pb and As were measured in maternal toenail samples collected at ~28 weeks gestation (n = 257) and/or 6 weeks postpartum (n = 285), which represent exposures ~6 to 12 months prior to collection and therefore reflect the early prenatal and late prenatal exposures, respectively. Five measurements of systolic blood pressure (SBP) and diastolic blood pressure (DBP) were averaged for each child using a standardized technique. In linear regression analyses, where log2-transformed prenatal toenail Pb and As were modeled jointly and adjusted for child age, sex, height, weight and maternal smoking during pregnancy, we observed that a doubling of maternal prenatal toenail Pb was associated with statistically significant increases in child SBP (β: 0.58 mm Hg, 95% CI: 0.05, 1.11). We did not observe any association of prenatal or postpartum As, or postpartum Pb, with SBP or DBP. Exploratory sex-stratified analyses suggest that associations of prenatal Pb with BP may be stronger among boys (SBP β: 0.72 mm Hg: 95% CI: -0.01, 1.44; DBP β: 0.37; 95% CI: -0.09, 0.84), compared to girls (SBP β: 0.48 mm Hg: 95% CI: -0.31, 1.26; DBP β: -0.05; 95% CI: -0.52, 0.41), though tests for interaction did not reach statistical significance (p-interaction SBP = 0.059; DBP = 0.057). Our preliminary results suggest that in utero toxic metals exposures may be associated with early life increases in blood pressure in children, which could have consequences for long-term health.
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Affiliation(s)
- Shohreh F Farzan
- Department of Preventive Medicine, Keck School of Medicine of University of Southern California, Los Angeles, CA, USA.
| | - Caitlin G Howe
- Department of Preventive Medicine, Keck School of Medicine of University of Southern California, Los Angeles, CA, USA
| | - Yu Chen
- Department of Population Health, New York University School of Medicine, New York, NY, USA
| | - Diane Gilbert-Diamond
- Children's Environmental Health & Disease Prevention Research Center at Dartmouth, Hanover, NH, USA; Department of Epidemiology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Kathryn L Cottingham
- Children's Environmental Health & Disease Prevention Research Center at Dartmouth, Hanover, NH, USA; Department of Biological Sciences, Dartmouth College, Hanover, NH, USA
| | - Brian P Jackson
- Department of Earth Sciences, Dartmouth College, Hanover, NH, USA
| | - Adam R Weinstein
- Department of Pediatrics, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA
| | - Margaret R Karagas
- Children's Environmental Health & Disease Prevention Research Center at Dartmouth, Hanover, NH, USA; Department of Epidemiology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
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24
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Lead Environmental Pollution and Childhood Lead Poisoning at Ban Thi Commune, Bac Kan Province, Vietnam. BIOMED RESEARCH INTERNATIONAL 2018; 2018:5156812. [PMID: 30581854 PMCID: PMC6276492 DOI: 10.1155/2018/5156812] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 10/31/2018] [Indexed: 11/17/2022]
Abstract
Lead poisoning is a public health problem in many areas of the world. Children are at particularly high risk for adverse effects of lead exposure; even at low concentrations, lead can affect physical, mental, and behavioral development. Children living near lead-zinc mines are at high risk for environmental lead poisoning, especially the contaminated soil. We conducted a cross-sectional descriptive study in Ban Thi Commune, northern Vietnam. 195 children (92,9% participation) aged 3-14 years old (average: 7.69 ± 2.90) were randomly selected from a list of all children prepared by the village health collaborators. 109 (55.90%) were boys and 86 (44.10%) were girls. The research measures were the lead concentration in native soil and the children's total blood lead concentration determined by the inductively coupled plasma-mass spectrometry (ICP-MS) method. The results showed that lead content in soil was many times higher than American Environmental Protection Agency and Vietnam standards (average 2980.23 ± 6092.84 mg/kg dry weight of soil (range 80.05 – 33820.62)). Average blood lead levels for children were 15.42 ± 6.45 μg/dL (95% CI: 14.50 -16.33 μg/dL). The percentage of children with lead levels >10 μg/dL (value considered to be lead poisoning for children according to the Ministry of Health of Vietnam) was 79.49% of the total number of children. None of the children in this study had blood lead level (BLL) that required chelation treatment according to Vietnam MOH guideline (BLL ≥45 μg/dL). There is weakly evidence that lead exposure relates to the physical development of children. Children with low lead concentrations (less than 10 μg/dL) had height and weight of 1.47-3.51 cm and 1.19-2.81 kg, greater than those with BLL >10 μg/dL (p>0.05).
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25
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Mandić-Rajčević S, Bulat Z, Matović V, Popević M, Lepić M, Mandić B, Jovanović M, Haufroid V, Žarković M, Bulat P. Environmental and take-home lead exposure in children living in the vicinity of a lead battery smelter in Serbia. ENVIRONMENTAL RESEARCH 2018; 167:725-734. [PMID: 30236521 DOI: 10.1016/j.envres.2018.08.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 08/28/2018] [Accepted: 08/29/2018] [Indexed: 06/08/2023]
Abstract
Blood lead levels (BLLs) have been falling steadily worldwide due to restricted use of lead (Pb) and its compounds. although they remain above preindustrial Pb levels. Elevated BLL can still be found in children living near secondary Pb smelters that represent around 50% of Pb production. There have been no studies on Pb exposure in children living in Serbia ever since the 1980s. The aim of this study was to evaluate the BLLs in children living in two villages in Serbia (Zajača, the location of a secondary lead smelter, and Paskovac, 5 km away), identify the primary determinants of children's BLLs, and investigate the impact of BLLs on children's health symptoms and school achievement. The study was conducted in 2011 on 127 children, aged 1-18 years, whose BLLs were measured using inductively coupled argon plasma mass spectrometry (ICP-MS). The median BLL in children was 12 μg/dl, with a significantly higher value of 17.5 μg/dl in Zajača, compared to 7.6 μg/dl in Paskovac. Only 1 out of 75 and 12 out of 52 children from Zajača and Paskovac, respectively, had BLLs below the CDC recommended 5 μg/dl level. Living near the smelter resulted in 19 times, and having a father who works in the plant 4 times higher odds of elevated BLLs. No significant effects of elevated BLLs health symptoms were seen in this study. BLLs of children living near a battery recycling plant in Serbia, an upper-middle income European country, were in the range and even higher than those of children living in developing countries. For the first time, the contribution of environmental and take-home lead exposure was quantified using mixed-effect modeling, and our results indicate a contribution of 25-40% of the take-home lead exposure to the BLLs of children living in the vicinity of a secondary lead smelter.
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Affiliation(s)
- Stefan Mandić-Rajčević
- Innovation Centre of the Faculty for Technology and Metallurgy, University of Belgrade, Serbia
| | - Zorica Bulat
- Department of Toxicology "Akademik Danilo Soldatović," University of Belgrade - Faculty of Pharmacy, Serbia.
| | - Vesna Matović
- Department of Toxicology "Akademik Danilo Soldatović," University of Belgrade - Faculty of Pharmacy, Serbia
| | - Martin Popević
- Serbian Institute for Occupational Health "Dr. Dragomir Karajović", Belgrade, Serbia; University of Belgrade, Faculty of Medicine, Serbia
| | - Milan Lepić
- Clinic for Neurosurgery, Military Medical Academy, Belgrade, Serbia
| | - Bojana Mandić
- Clinic for Hematology, Clinical Centre of Serbia, Belgrade, Serbia
| | - Mića Jovanović
- Faculty for Technology and Metallurgy, University of Belgrade, Serbia and Academy of Engineering Sciences of Serbia, Serbia
| | - Vincent Haufroid
- Cliniques Universitaires Saint-Luc-Analytical Toxicology Laboratory, Brussels, Belgium
| | - Miloš Žarković
- Clinic for Endocrinology, Clinical Centre of Serbia, Belgrade, Serbia; University of Belgrade, Faculty of Medicine, Serbia
| | - Petar Bulat
- Serbian Institute for Occupational Health "Dr. Dragomir Karajović", Belgrade, Serbia; University of Belgrade, Faculty of Medicine, Serbia
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White AJ, O'Brien KM, Jackson BP, Karagas MR. Urine and toenail cadmium levels in pregnant women: A reliability study. ENVIRONMENT INTERNATIONAL 2018; 118:86-91. [PMID: 29857281 PMCID: PMC6045451 DOI: 10.1016/j.envint.2018.05.030] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 05/14/2018] [Accepted: 05/15/2018] [Indexed: 05/18/2023]
Abstract
BACKGROUND Cadmium, as measured in human tissue, has been associated with numerous health outcomes. However, few studies have evaluated the reliability of cadmium measurements across different biologic samples. We evaluated toenail cadmium levels over time and compared toenail cadmium to urinary cadmium. We also evaluated the relationship between biomarker concentrations and cigarette smoking, a known source of cadmium exposure. METHODS Cadmium was assessed in urine and toenail samples collected from 1338 pregnant women participating in the New Hampshire Birth Cohort Study. Each participant was asked to provide a urine and a toenail sample at enrollment (between 24 and 28 weeks gestation) and another toenail sample 2-8 weeks postpartum. Cadmium concentrations were determined using inductively-coupled plasma mass spectrometry. Spearman correlations were assessed for cadmium in the toenails across the two-time points and comparing toenail and urine levels. Smoking status was evaluated as a predictor of cadmium levels. RESULTS Toenail cadmium assessed during pregnancy and postpartum were modestly correlated (R = 0.3, p < 0.0001). However, urine and toenail cadmium levels were unrelated (R = -0.03, p = 0.46). Both toenail and urinary cadmium levels were associated with women's smoking status. CONCLUSION Our findings suggest that both toenail and urinary cadmium concentrations reflect the major source of exposure - cigarette smoking. Toenail cadmium concentrations are modestly reproducible pre- and postpartum; but do not appear to be related to urinary cadmium and thus likely represent different windows and chronicity of exposure among pregnant women.
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Affiliation(s)
- Alexandra J White
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA.
| | - Katie M O'Brien
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA; Biostatistics and Computational Biology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA
| | - Brian P Jackson
- Department of Earth Sciences, Dartmouth College, Hanover, NH, USA
| | - Margaret R Karagas
- Department of Epidemiology and Children's Environmental Health and Disease Prevention Research Center at Dartmouth, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
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Liu L, Zhang B, Lin K, Zhang Y, Xu X, Huo X. Thyroid disruption and reduced mental development in children from an informal e-waste recycling area: A mediation analysis. CHEMOSPHERE 2018; 193:498-505. [PMID: 29156335 DOI: 10.1016/j.chemosphere.2017.11.059] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 11/11/2017] [Accepted: 11/13/2017] [Indexed: 02/05/2023]
Abstract
This paper aims to evaluate the effects of thyroid disruption on the mental development of children. A total of 258 three-year-old children in Guiyu (e-waste-exposed group) and Nanao (reference group), China were examined. FT3, FT4, TSH, lead (BPb) and cadmium (BCd) in blood were determined, and cognitive and language scores of children were assessed based on the Bayley Scales of Infant Development III. Stepwise multiple regression was used to estimate the relationship between heavy metals and cognitive and language scores; mediation analysis was performed to determine whether thyroid disruption was mechanistically involved. Medians of BPb and BCd in Guiyu were higher than that of Nanao (11.30 ± 5.38 vs. 5.77 ± 2.51 μg/dL BPb; 1.22 ± 0.55 vs. 0.72 ± 0.37 μg/L BCd, both p < 0.001). Means of FT4 and TSH in Guiyu were also higher than those in Nanao (16.65 ± 1.83 vs.16.06 ± 1.66 pmol/L FT4, p = 0.007; 2.79 ± 1.30 vs. 2.21 ± 1.43 mIU/L TSH, p = 0.001). Guiyu children had lower cognitive scores (100.00 ± 25.00 vs. 120.00 ± 20.00, p < 0.001) and lower language scores (99.87 ± 7.52 vs. 111.39 ± 7.02, p < 0.001). Mediation analysis showed that Pb negatively correlated with both cognitive and language scores (both p < 0.001). However, FT3, FT4 and TSH did not significantly mediate the relationship between Pb and mental development of children (all p > 0.05). In contrast, Cd correlated with neither cognitive nor language scores (both p > 0.05). Results suggest exposure to heavy metal (Pb) reduces cognitive and language skills, and affects thyroid function, but fail to confirm that thyroid disruption is involved in the neurotoxicity induced by PbCd co-exposure.
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Affiliation(s)
- Lian Liu
- Department of Neurology, Second Affiliated Hospital of Shantou University Medical College, Shantou, 515041, Guangdong, China; Laboratory of Environmental Medicine and Developmental Toxicology, Shantou University Medical College, Shantou, 515041, Guangdong, China
| | - Bo Zhang
- Laboratory of Environmental Medicine and Developmental Toxicology, Shantou University Medical College, Shantou, 515041, Guangdong, China
| | - Kun Lin
- Department of Preventive Medicine, Shantou University Medical College, Shantou, 515041, Guangdong, China
| | - Yuling Zhang
- Laboratory of Environmental Medicine and Developmental Toxicology, Shantou University Medical College, Shantou, 515041, Guangdong, China
| | - Xijin Xu
- Laboratory of Environmental Medicine and Developmental Toxicology, Shantou University Medical College, Shantou, 515041, Guangdong, China.
| | - Xia Huo
- Guangzhou Key Laboratory of Environmental Exposure and Health, Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou, 510632, China.
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Alvarez-Ortega N, Caballero-Gallardo K, Olivero-Verbel J. Low blood lead levels impair intellectual and hematological function in children from Cartagena, Caribbean coast of Colombia. J Trace Elem Med Biol 2017; 44:233-240. [PMID: 28965581 DOI: 10.1016/j.jtemb.2017.08.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2017] [Revised: 07/25/2017] [Accepted: 08/07/2017] [Indexed: 02/08/2023]
Abstract
Lead produces numerous biochemical and physiological changes in humans, including hematological disorders, toxic effects on the central nervous system and in the function of several organs. The aim of this study was to determine blood lead levels (BLL) in children from Cartagena, Colombia, associating those with hematological and liver damage markers, the intelligence quotient (IQ), as well as with gene expression of the aminolevulinate dehydratase (ALAD), superoxide dismutase 1 (SOD1), gamma interferon (INF-γ), tumor necrosis factor (TNF) and tumor protein (p53). To achieve this purpose, 118 blood samples were collected from children 5-16 years old, with their respective informed consent from their parents. BLL was measured by atomic absorption; hematological parameters were obtained with automated systems; plasma was utilized to analyze hepatic toxicity markers, alanine aminotransferase (ALT), gamma-glutamyltransferase (γ-GT) and alkaline phosphatase (ALP); the Kaufman Brief Intelligence Test (K-BIT) was administered to measure the IQ; and gene expression was quantified from blood RNA. The mean BLL was 1.7±0.3μg/dL. A low proportion of the children (3.4%) had BLL above the CDC recommended limit (5μg/dL). BLL were correlated weakly, but negatively with child age, weight, height, body mass index, platelets wide distribution, mean platelet volume, γ-GT and IQ. There were not significant changes in the expression of evaluated genes. These results support the hypothesis that BLL below 5μg/dL may still be a detrimental factor on children's cognitive abilities, development and hematology, in line with recent concerns that there is no safe level of pediatric lead exposure.
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Affiliation(s)
- Neda Alvarez-Ortega
- Environmental and Computational Chemistry Group, School of Pharmaceutical Sciences, Zaragocilla Campus, University of Cartagena, Cartagena 130015, Colombia
| | - Karina Caballero-Gallardo
- Environmental and Computational Chemistry Group, School of Pharmaceutical Sciences, Zaragocilla Campus, University of Cartagena, Cartagena 130015, Colombia
| | - Jesus Olivero-Verbel
- Environmental and Computational Chemistry Group, School of Pharmaceutical Sciences, Zaragocilla Campus, University of Cartagena, Cartagena 130015, Colombia.
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Nascimento SN, Göethel G, Baierle M, Barth A, Brucker N, Charão MF, Moro AM, Gauer B, Sauer E, Durgante J, Arbo MD, Thiesen FV, Pierre TDS, Gioda A, Moresco R, Garcia SC. Environmental exposure and effects on health of children from a tobacco-producing region. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:2851-2865. [PMID: 27838906 DOI: 10.1007/s11356-016-8071-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 11/07/2016] [Indexed: 06/06/2023]
Abstract
Children may be environmentally exposed to several hazards. In order to evaluate the health of children living in a tobacco-producing region, different biomarkers of exposure and effect, as well as hematological parameters, were evaluated. Biomarkers of exposure to the following xenobiotics were assessed: pesticides, nicotine, toxic elements, and organic solvents. Oxidative damage markers malondialdehyde (MDA) and protein carbonyls (PCO), vitamin C, microalbuminuria (mALB) levels, and N-acetyl-β-D-glucosaminidase (NAG) activity were also evaluated. Peripheral blood samples and urine were collected from 40 children (6-12 years), at two different crop periods: in the beginning of pesticide applications (period 1) and in the leaf harvest (period 2). The Wilcoxon signed-rank test for paired data was used to evaluate the differences between both periods. Biomarkers of exposure cotinine in urine and blood chromium (Cr) levels were increased in period 1 when compared to period 2. Moreover, a significant reduced plasmatic activity of butyrylcholinesterase (BuChE) was observed in period 2 in relation to period 1. Blood Cr levels were above the recommended by WHO in both evaluations. The biomarkers MDA and PCO as well as the kidney dysfunction biomarker, mALB, presented levels significantly increased in period 1. Additionally, decreased lymphocytes and increased basophils were also observed. Cotinine was positively associated with PCO, and Cr was positively associated with PCO and MDA. The increased Cr levels were associated with decreased lymphocytes and increased basophils. Our findings demonstrate that children environmentally exposed to xenobiotics in rural area may present early kidney dysfunction, hematological alterations, as well as lipid and protein damages, associated with co-exposure to different xenobiotics involved in tobacco cultivation.
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Affiliation(s)
- Sabrina N Nascimento
- Laboratory of Toxicology (LATOX), Department of Analyses, Faculty of Pharmacy, Federal University of Rio Grande do Sul (UFRGS), Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP: 90610-000, Brazil
- Post-Graduate Program in Pharmaceutical Sciences, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Gabriela Göethel
- Laboratory of Toxicology (LATOX), Department of Analyses, Faculty of Pharmacy, Federal University of Rio Grande do Sul (UFRGS), Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP: 90610-000, Brazil
- Post-Graduate Program in Pharmaceutical Sciences, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Marília Baierle
- Laboratory of Toxicology (LATOX), Department of Analyses, Faculty of Pharmacy, Federal University of Rio Grande do Sul (UFRGS), Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP: 90610-000, Brazil
| | - Anelise Barth
- Laboratory of Toxicology (LATOX), Department of Analyses, Faculty of Pharmacy, Federal University of Rio Grande do Sul (UFRGS), Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP: 90610-000, Brazil
| | - Natália Brucker
- Laboratory of Toxicology (LATOX), Department of Analyses, Faculty of Pharmacy, Federal University of Rio Grande do Sul (UFRGS), Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP: 90610-000, Brazil
| | - Mariele F Charão
- Laboratory of Toxicology (LATOX), Department of Analyses, Faculty of Pharmacy, Federal University of Rio Grande do Sul (UFRGS), Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP: 90610-000, Brazil
- Institute of Health Sciences, Feevale University, Novo Hamburgo, RS, Brazil
| | - Angela M Moro
- Laboratory of Toxicology (LATOX), Department of Analyses, Faculty of Pharmacy, Federal University of Rio Grande do Sul (UFRGS), Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP: 90610-000, Brazil
| | - Bruna Gauer
- Laboratory of Toxicology (LATOX), Department of Analyses, Faculty of Pharmacy, Federal University of Rio Grande do Sul (UFRGS), Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP: 90610-000, Brazil
- Post-Graduate Program in Pharmaceutical Sciences, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Elisa Sauer
- Laboratory of Toxicology (LATOX), Department of Analyses, Faculty of Pharmacy, Federal University of Rio Grande do Sul (UFRGS), Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP: 90610-000, Brazil
- Post-Graduate Program in Pharmaceutical Sciences, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Juliano Durgante
- Laboratory of Toxicology (LATOX), Department of Analyses, Faculty of Pharmacy, Federal University of Rio Grande do Sul (UFRGS), Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP: 90610-000, Brazil
| | - Marcelo D Arbo
- Laboratory of Toxicology (LATOX), Department of Analyses, Faculty of Pharmacy, Federal University of Rio Grande do Sul (UFRGS), Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP: 90610-000, Brazil
- Post-Graduate Program in Pharmaceutical Sciences, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Flavia V Thiesen
- Faculty of Pharmacy, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Tatiana D Saint' Pierre
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, RJ, Brazil
| | - Adriana Gioda
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, RJ, Brazil
| | - Rafael Moresco
- Laboratory of Clinical Biochemistry, Department of Clinical and Toxicological Analyses, Federal University of Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Solange Cristina Garcia
- Laboratory of Toxicology (LATOX), Department of Analyses, Faculty of Pharmacy, Federal University of Rio Grande do Sul (UFRGS), Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP: 90610-000, Brazil.
- Post-Graduate Program in Pharmaceutical Sciences, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.
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Bakri SFZ, Hariri A, Ma’arop NF, Hussin NSAW. Toenail as Non-invasive Biomarker in Metal Toxicity Measurement of Welding Fumes Exposure - A Review. ACTA ACUST UNITED AC 2017. [DOI: 10.1088/1757-899x/165/1/012019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Fuhrimann S, Pham-Duc P, Cissé G, Tram NT, Thu Ha H, Dung DT, Ngoc P, Nguyen-Viet H, Anh Vuong T, Utzinger J, Schindler C, Winkler MS. Microbial contamination along the main open wastewater and storm water channel of Hanoi, Vietnam, and potential health risks for urban farmers. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 566-567:1014-1022. [PMID: 27325013 DOI: 10.1016/j.scitotenv.2016.05.080] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 05/12/2016] [Accepted: 05/12/2016] [Indexed: 06/06/2023]
Abstract
The use of wastewater in agriculture and aquaculture has a long tradition throughout Asia. For example, in Hanoi, it creates important livelihood opportunities for >500,000 farmers in peri-urban communities. Discharge of domestic effluents pollute the water streams with potential pathogenic organisms posing a public health threat to farmers and consumers of wastewater-fed foodstuff. We determined the effectiveness of Hanoi's wastewater conveyance system, placing particular emphasis on the quality of wastewater used in agriculture and aquaculture. Between April and June 2014, a total of 216 water samples were obtained from 24 sampling points and the concentrations of total coliforms (TC), Escherichia coli, Salmonella spp. and helminth eggs determined. Despite applied wastewater treatment, agricultural field irrigation water was heavily contaminated with TC (1.3×10(7)colony forming unit (CFU)/100mL), E. coli (1.1×10(6)CFU/100mL) and Salmonella spp. (108 most probable number (MPN)/100mL). These values are 110-fold above Vietnamese discharge limits for restricted agriculture and 260-fold above the World Health Organization (WHO)'s tolerable safety limits for unrestricted agriculture. Mean helminth egg concentrations were below WHO tolerable levels in all study systems (<1egg/L). Hence, elevated levels of bacterial contamination, but not helminth infections, pose a major health risk for farmers and consumers of wastewater fed-products. We propose a set of control measures that might protect the health of exposed population groups without compromising current urban farming activities. This study presents an important example for sanitation safety planning in a rapidly expanding Asian city and can guide public and private entities working towards Sustainable Development Goal target 6.3, that is to improve water quality by reducing pollution, halving the proportion of untreated wastewater and increasing recycling and safe reuse globally.
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Affiliation(s)
- Samuel Fuhrimann
- Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Basel, Switzerland; University of Basel, Basel, Switzerland.
| | - Phuc Pham-Duc
- Center for Public Health and Ecosystem Research, Hanoi School of Public Health, Hanoi, Vietnam
| | - Guéladio Cissé
- Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Basel, Switzerland; University of Basel, Basel, Switzerland
| | - Nguyen Thuy Tram
- Department of Microbiology, National Institute of Hygiene and Epidemiology, Hanoi, Vietnam
| | - Hoang Thu Ha
- Department of Microbiology, National Institute of Hygiene and Epidemiology, Hanoi, Vietnam
| | - Do Trung Dung
- Department of Parasitology, National Institute of Malaria, Parasitology, and Entomology, Hanoi, Vietnam
| | - Pham Ngoc
- Department of Animal Hygiene, National Institute for Veterinary Research, Hanoi, Vietnam
| | - Hung Nguyen-Viet
- Center for Public Health and Ecosystem Research, Hanoi School of Public Health, Hanoi, Vietnam; International Livestock Research Institute, Hanoi, Vietnam
| | - Tuan Anh Vuong
- Department of Microbiology, National Institute of Hygiene and Epidemiology, Hanoi, Vietnam
| | - Jürg Utzinger
- Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Basel, Switzerland; University of Basel, Basel, Switzerland
| | - Christian Schindler
- Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Basel, Switzerland; University of Basel, Basel, Switzerland
| | - Mirko S Winkler
- Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Basel, Switzerland; University of Basel, Basel, Switzerland
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Grigoryan R, Petrosyan V, Melkom Melkomian D, Khachadourian V, McCartor A, Crape B. Risk factors for children's blood lead levels in metal mining and smelting communities in Armenia: a cross-sectional study. BMC Public Health 2016; 16:945. [PMID: 27604802 PMCID: PMC5015252 DOI: 10.1186/s12889-016-3613-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 08/30/2016] [Indexed: 11/11/2022] Open
Abstract
Background Children’s exposure to lead poses a significant risk for neurobehavioral consequences. Existing studies documented lead contamination in residential soil in mining and smelting communities in Armenia. This study aimed to assess blood lead levels (BLL) in children living in three communities in Armenia adjacent to metal mining and smelting industries, and related risk factors. Methods This cross-sectional study included 159 children born from 2007 to 2009 and living in Alaverdi and Akhtala communities and Erebuni district in Yerevan - the capital city. The BLL was measured with a portable LeadCare II Blood Lead Analyzer; a survey was conducted with primary caregivers. Results Overall Geometric Mean (GM) of BLL was 6.0 μg/dl: 6.8 for Akhtala, 6.4 for Alaverdi and 5.1 for Yerevan. In the sample 68.6 % of children had BLL above CDC defined reference level of 5 μg/dl: 83.8 % in Akhtala, 72.5 % in Alaverdi, and 52.8 % in Yerevan. Caregiver’s lower education, dusting furniture less than daily, and housing distance from toxic source(s) were risk factors for higher BLL. Additional analysis for separate communities demonstrated interaction between housing distance from toxic source(s) and type of window in Erebuni district of Yerevan. Conclusions The study demonstrated that children in three communities adjacent to metal mining and smelting industries were exposed to lead. Investigation of the risk factors suggested that in addition to promoting safe industrial practices at the national level, community-specific interventions could be implemented in low- and middle-income countries to reduce BLL among children.
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Affiliation(s)
- Ruzanna Grigoryan
- School of Public Health, American University of Armenia, 40 Marshal Baghramian Avenue, Yerevan, 0019, Armenia
| | - Varduhi Petrosyan
- School of Public Health, American University of Armenia, 40 Marshal Baghramian Avenue, Yerevan, 0019, Armenia
| | - Dzovinar Melkom Melkomian
- School of Public Health, American University of Armenia, 40 Marshal Baghramian Avenue, Yerevan, 0019, Armenia.
| | - Vahe Khachadourian
- Department of Epidemiology, School of Public Health, University of California, Los Angeles, Los Angeles, CA, USA
| | | | - Byron Crape
- School of Public Health, American University of Armenia, 40 Marshal Baghramian Avenue, Yerevan, 0019, Armenia
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Punshon T, Li Z, Marsit CJ, Jackson BP, Baker ER, Karagas MR. Placental Metal Concentrations in Relation to Maternal and Infant Toenails in a U.S. Cohort. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:1587-94. [PMID: 26727403 PMCID: PMC4873612 DOI: 10.1021/acs.est.5b05316] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Metal contaminants cross the placenta, presenting a heightened risk of perturbing fetal development. Information about placental concentrations and transfer of multiple potentially toxic metals from low to moderate exposure is lacking. We measured concentrations of Cd, Pb, Hg, Mn, Se, and Zn in 750 placentas collected from women enrolled in the New Hampshire Birth Cohort Study and examined the correlation between elements, and profiles of potentially toxic metals (Cd, Pb, Hg, and Mn) stratified by nutrient concentrations (Zn and Se) using principal components analyses. We further examined the indirect effects of maternal metal concentrations on infant metal concentrations through placental metal concentrations using structural equation models. Placental metal concentrations were all correlated, particularly Zn and Mn, and Zn and Cd, and the principal component of metals differed by stratum of high versus low Zn and Se. Associations were observed between placenta and maternal toenail Se (β = 63.49; P < 0.0001) and Pb (β = 0.90; P < 0.0001) but not other metals. Structural equation models did not indicate any statistically significant indirect effects through placental metal concentrations. Placental metal concentrations may represent a distinct biomarker of metal exposure and adverse health impacts to the fetus, particularly those stemming from the placenta.
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Affiliation(s)
- Tracy Punshon
- Dartmouth College, Hanover, NH, 03755
- Address correspondence and reprint requests to: Tracy Punshon, PhD, Research Assistant Professor, Department of Biology, Dartmouth College, 78 College Street, Hanover, NH 03756, Tel: (603) 646 1037, Fax: (603) 646 1347,
| | - Zhigang Li
- Geisel School of Medicine, Dartmouth College, Hanover, NH, 03755
| | - Carmen J. Marsit
- Geisel School of Medicine, Dartmouth College, Hanover, NH, 03755
| | | | - Emily R. Baker
- Dartmouth Hitchcock Medical Center, Department of Obstetrics and Gynecology, One Medical Center Drive, Lebanon, NH, 03756
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Childhood Lead Exposure from Battery Recycling in Vietnam. BIOMED RESEARCH INTERNATIONAL 2015; 2015:193715. [PMID: 26587532 PMCID: PMC4637436 DOI: 10.1155/2015/193715] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 09/18/2015] [Accepted: 09/29/2015] [Indexed: 11/19/2022]
Abstract
Background. Battery recycling facilities in developing countries can cause community lead exposure. Objective. To evaluate child lead exposure in a Vietnam battery recycling craft village after efforts to shift home-based recycling outside the village. Methods. This cross-sectional study evaluated 109 children in Dong Mai village, using blood lead level (BLL) measurement, parent interview, and household observation. Blood samples were analyzed with a LeadCare II field instrument; highest BLLs (≥45 μg/dL) were retested by laboratory analysis. Surface and soil lead were measured at 11 households and a school with X-ray fluorescence analyzer. Results. All children had high BLLs; 28% had BLL ≥45 μg/dL. Younger age, family recycling, and outside brick surfaces were associated with higher BLL. Surface and soil lead levels were high at all tested homes, even with no recycling history. Laboratory BLLs were lower than LeadCare BLLs, in 24 retested children. Discussion. In spite of improvements, lead exposure was still substantial and probably associated with continued home-based recycling, legacy contamination, and workplace take-home exposure pathways. There is a need for effective strategies to manage lead exposure from battery recycling in craft villages. These reported BLL values should be interpreted cautiously, although the observed field-laboratory discordance may reflect bias in laboratory results.
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Mohmand J, Eqani SAMAS, Fasola M, Alamdar A, Mustafa I, Ali N, Liu L, Peng S, Shen H. Human exposure to toxic metals via contaminated dust: Bio-accumulation trends and their potential risk estimation. CHEMOSPHERE 2015; 132:142-51. [PMID: 25840340 DOI: 10.1016/j.chemosphere.2015.03.004] [Citation(s) in RCA: 160] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Revised: 02/07/2015] [Accepted: 03/06/2015] [Indexed: 05/12/2023]
Abstract
We assessed the levels of potentially toxic trace metals, Zinc (Zn), Lead (Pb), Manganese (Mn), Copper (Cu), Nickel (Ni), Chromium (Cr), Cobalt (Co), and Cadmium (Cd), in dust, hair, nail and serum, sampled in rural, urban and industrial areas of Punjab, Pakistan. Trace metals occurrence in all samples, in descending order, was: Zn, Pb, Mn, Cu, Cr, Ni, Co, Cd. The samples from the urban areas showed significantly higher concentration of toxic trace metals (Zn, Ni, Cr, Co, Mn, and Cd) than those from industrial (which conversely had higher levels of Pb and Cu), and than samples from rural areas. Bioaccumulation patterns showed that dust exposure is one of the major routes into human body for Cd, Pb, Co, Mn and Cr, while the burden of Zn, Cu, and Ni can be more linked to dietary sources. The concentrations of trace metals in the samples from Punjab were comparable and/or higher than those reported worldwide. In many cases, the levels of Zn, Cr, Pb, Ni and Cd in hair and nail were beyond the ATSDR threshold guideline values that may cause some serious health effects. Hazard Index (HI) calculated for trace metal concentrations in the human population of Punjab points particularly to health risks from Cd (for children in urban and industrial areas) and from Pb (for all sub-groups).
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Affiliation(s)
- Jawad Mohmand
- Public Health and Environment Division, Department of Biosciences, COMSATS Institute of Information & Technology, Islamabad, Pakistan
| | | | - Mauro Fasola
- Dipartimento Scienze della Terra e dell'Ambiente, Università, Via Ferrata 9, I-27100 Pavia, Italy
| | - Ambreen Alamdar
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, PR China
| | - Irfan Mustafa
- Department of Biological Sciences, University of Sargodha, Sargodha, Pakistan
| | - Nadeem Ali
- Center of Excellence in Environmental Studies, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Liangpo Liu
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, PR China
| | - Siyuan Peng
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, PR China
| | - Heqing Shen
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, PR China.
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Bouftini S, Bahhou J, Lelievre B, de la Barca JMC, Turcant A, Diquet B, Abourazzak S, Chaouki S, Hida M, Khattabi A, Nejjari C, Amarti A, Achour S. Screening for childhood lead poisoning in the industrial region of Fez, Morocco. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2015; 68:442-450. [PMID: 25511562 DOI: 10.1007/s00244-014-0108-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Accepted: 11/20/2014] [Indexed: 06/04/2023]
Abstract
The study objectives were to estimate lead poisoning prevalence among children living next to an industrial area, to compare it to that in a control population, and to establish clinical and biological follow-up of the poisoned children. This is a descriptive cross-sectional study including 150 children (exposed and unexposed) performed between January 2012 and April 2013. It was meant to determine blood lead levels (BLLs) in children considered to be an exposed population (EP N 90), living in the industrial area Ain Nokb Fez compared with BLLs of children of other areas belonging to the same city supposed to be unexposed [UP (N = 60)]. A sociodemographic questionnaire was obtained, and a blood lead analysis was performed. Clinical and biological follow-up has been performed of poisoned children. The sample consisted of 90 EP children with an average age of 6.82 ± 3.32 years and male-to-female sex ratio (SR) of 1.5 and 60 UP children with an average age of 6.45 ± 3.29 years and an SR of 1.2. Among the 150 children recruited, the average of BLLs was 58.21 ± 36 µg/L (18-202.3 μg/L). The average of BLLs in EP children (71 ± 40 µg/L) was statistically greater (p < 0.0001) than that registered in UP children (38 ± 13 µg/L). All poisoned children belonged to the EP group at a prevalence of 21.1 %. The clinical and biological examinations of poisoned children showed a few perturbations such as anemia, hypocalcaemia, and deficiencies in magnesium and iron. No renal disease or objective neurological disorders were observed. In the follow-up of the children with BLL ≥100 µg/L (19 cases). BLL monitoring showed a significant decrease in average of blood concentration ranging from 136.75 ± 32.59 to 104.58 ± 32.73 µg/L (p < 0.0001) and in lead poisoning prevalence (p < 0.001), which decreased to 7.8 % from 21.1. Our study showed a high prevalence of lead poisoning (21.1 %) in EP children. The relocation of the industrial site associated with corrective and preventive measures has contributed to a decrease of exposure and lead poisoning prevalence in the aforementioned population.
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Affiliation(s)
- S Bouftini
- Laboratory of Analysis and Modeling of Continental Ecosystems, Faculty of Science Dhar El Mehraz (FSDM), Université Sidi Mohamed Ben Abdellah (USMBA), Fez, Morocco,
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Liu W, Huo X, Liu D, Zeng X, Zhang Y, Xu X. S100β in heavy metal-related child attention-deficit hyperactivity disorder in an informal e-waste recycling area. Neurotoxicology 2014; 45:185-91. [PMID: 25451971 DOI: 10.1016/j.neuro.2014.10.013] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 10/23/2014] [Accepted: 10/23/2014] [Indexed: 02/05/2023]
Abstract
Exposure to lead even at low levels correlates with attention-deficit/hyperactivity disorder (ADHD). However, lead-contaminated environments are often contaminated with other heavy metals that could exacerbate lead-induced ADHD. We conducted this study to evaluate the relationship between multiple heavy metals and child behaviors, and the involvement of S100 calcium-binding protein β (S100β) expression in child ADHD in Guiyu, an internationally-known e-waste contaminated recycling town. Two hundred and forty kindergarten children, 3- to 7-years of age, who lived in Guiyu, were recruited for this study. Child behavioral assessment was derived from parent and teacher ratings. Serum S100β was assayed by an enzyme-linked immunosorbent assay (ELISA). Lead (Pb), cadmium (Cd) and manganese (Mn) levels in whole blood were measured using graphite furnace atomic absorption spectrometry (GFAAS). The prevalence of children with ADHD symptoms in Guiyu was 18.6%, with the percentage of children suspected to have behavior problems being 46.2% or 46.5%, based on the Rutter parents' or teachers' scale scores, respectively. Child blood levels of Pb, Cd, and Mn correlated with certain behavioral abnormalities, such as conduct problems and antisocial behavior. Serum S100β levels were associated with heavy metal levels in blood, and certain behavioral abnormalities. These findings suggest that exposure to various environmental heavy metals in Guiyu might result in child behavior disorders. Results also indicate that S100β may provide information for laboratory evaluation of neurotoxicity.
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Affiliation(s)
- Wei Liu
- Laboratory of Environmental Medicine and Developmental Toxicology, and Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou 515041, Guangdong, China
| | - Xia Huo
- Laboratory of Environmental Medicine and Developmental Toxicology, and Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou 515041, Guangdong, China
| | - Daichun Liu
- Laboratory of Environmental Medicine and Developmental Toxicology, and Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou 515041, Guangdong, China
| | - Xiang Zeng
- Laboratory of Environmental Medicine and Developmental Toxicology, and Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou 515041, Guangdong, China; Department of Epidemiology, University Medical Center Groningen, University of Groningen, Groningen 9700RB, The Netherlands
| | - Yu Zhang
- Laboratory of Environmental Medicine and Developmental Toxicology, and Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou 515041, Guangdong, China
| | - Xijin Xu
- Laboratory of Environmental Medicine and Developmental Toxicology, and Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou 515041, Guangdong, China; Department of Cell Biology and Genetics, Shantou University Medical College, Shantou 515041, Guangdong, China.
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