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Roth TL, Rebolloso SL, Donelan EM, Rispoli LA, Buchweitz JP. Rhinoceros horn mineral and metal concentrations vary by sample location, depth, and color. Sci Rep 2024; 14:13808. [PMID: 38877154 PMCID: PMC11178811 DOI: 10.1038/s41598-024-64472-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Accepted: 06/10/2024] [Indexed: 06/16/2024] Open
Abstract
Poaching is again driving rhinos to the brink of extinction due to the demand for rhino horn products consumed for cultural, medicinal, and social purposes. Paradoxically, the same horn for which rhinos are killed may contain valuable clues about the species' health. Analyses of horn composition could reveal such useful bioindicators while elucidating what people actually ingest when they consume horn derivatives. Our goals were to quantify minerals (including metals) in rhino horn and investigate sampling factors potentially impacting results. Horns (n = 22) obtained during necropsies of white (n = 3) and black (n = 13) zoo rhinos were sampled in several locations yielding 182 specimens for analysis. Initial data exposed environmental (soil) contamination in the horn's exterior layer, but also confirmed that deep (≥ 1 cm), contaminant-free samples contained measurable concentrations of numerous minerals (n = 18). Of the factors examined in deep samples, color-associated mineral differences were the most profound with dark samples higher in zinc, copper, lead, and barium (p < 0.05). Our data demonstrate that rhino horns contain both essential and potentially toxic minerals that could be relevant to rhino health status, but low concentrations make their human health benefits or risks unlikely following consumption.
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Affiliation(s)
- Terri L Roth
- Center for Conservation and Research of Endangered Wildlife (CREW), Cincinnati Zoo and Botanical Garden, 3400 Vine Street, Cincinnati, OH, 45220, USA.
| | - Sarah L Rebolloso
- Veterinary Diagnostic Laboratory, College of Veterinary Medicine, Michigan State University, 4125 Beaumont Rd, Lansing, MI, 489100, USA
| | - Elizabeth M Donelan
- Center for Conservation and Research of Endangered Wildlife (CREW), Cincinnati Zoo and Botanical Garden, 3400 Vine Street, Cincinnati, OH, 45220, USA
| | - Louisa A Rispoli
- Center for Conservation and Research of Endangered Wildlife (CREW), Cincinnati Zoo and Botanical Garden, 3400 Vine Street, Cincinnati, OH, 45220, USA
| | - John P Buchweitz
- Veterinary Diagnostic Laboratory, College of Veterinary Medicine, Michigan State University, 4125 Beaumont Rd, Lansing, MI, 489100, USA
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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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Aragona F, Cicero N, Nava V, Piccione G, Giannetto C, Fazio F. Blood and hoof biodistibution of some trace element (Lithium, Copper, Zinc, Strontium and, Lead) in horse from two different areas of Sicily. J Trace Elem Med Biol 2024; 82:127378. [PMID: 38171268 DOI: 10.1016/j.jtemb.2023.127378] [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: 09/26/2023] [Revised: 12/22/2023] [Accepted: 12/22/2023] [Indexed: 01/05/2024]
Abstract
BACKGROUND AND PURPOSE Biological monitoring of trace element horses is a well-known tool for investigating potential bioaccumulation in urbanized and industrialized geographical areas. Some biomaterials such as hoof are considered as an important indicator of environmental pollution. Hooves can store trace elements for a long time compared to blood and this represents a scientific key to long-term monitoring of exposure to environmental pollutants. In the present study, samples of equine hoof and blood were taken from an experimental group of horses living in an industrialized area of Sicily (Italy) and from a control group of horses housed in a non-industrialized area of Sicily to evaluate the bioaccumulation of different trace elements in different substrates. METHODS Hoof and blood mineral concentration of Li- Lithium, Cu- Copper, Zn- Zinc, Sr- Strontium and, Pb- Lead was processed by means of Thermo Scientific iCAP-Q ICP-MS spectrometer. Student T-test was applied to evaluate the differences between groups and substrates. Correlation analysis between substrates and hematological parameters was performed. RESULTS Statistical analysis showed a significant statistical difference for Li (p < 0.0001) and Pb (p < 0.0001) between blood and hoof in both groups. A statistically significant difference was observed for Li (p < 0.0001), Cu(p < 0.01), Zn (p < 0.0001) and Pb (p < 0.0001) between substrates in the experimental group. The statistical analysis showed a significant difference of blood Zn (p < 0.01) and hoof Pb (p < 0.01) concentration between groups. Our results revealed a statistically higher concentration of minerals in the blood substrate than in the hoof in both groups. Li (p < 0.0001) and Zn (p < 0.001) were positively correlated between control and experimental group in blood substrate. No correlations were found (P > .05) in hoof between groups for other elements. A positive correlation with WBC was observed in Cu concentration for hoof substrate (p < 0.02) in control group and for Zn in experimental group (p < 0.02). A positive correlation with HGB and HCT was observed for Cu hoof concentration (p < 0.02) in experimental group and PLT resulted positively correlated (p < 0.02) with Pb blood substrate in control group. CONCLUSIONS Horses were not overexposed to these elements in the analyzed groups. The study highlights the role of a new bioaccumulation substrate such as the horse hoof identified as an analytical matrix for the monitoring of heavy metal concentrations in domestic animals.
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Affiliation(s)
- Francesca Aragona
- Department of Veterinary Science, University of Messina, Via Giovanni Palatucci, 98168 Messina, Italy
| | - Nicola Cicero
- Department of Veterinary Science, University of Messina, Via Giovanni Palatucci, 98168 Messina, Italy
| | - Vincenzo Nava
- Department of Veterinary Science, University of Messina, Via Giovanni Palatucci, 98168 Messina, Italy
| | - Giuseppe Piccione
- Department of Veterinary Science, University of Messina, Via Giovanni Palatucci, 98168 Messina, Italy
| | - Claudia Giannetto
- Department of Veterinary Science, University of Messina, Via Giovanni Palatucci, 98168 Messina, Italy.
| | - Francesco Fazio
- Department of Veterinary Science, University of Messina, Via Giovanni Palatucci, 98168 Messina, Italy
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Cortes JB, Sarazin P, Dieme D, Côté J, Ouellet C, El Majidi N, Bouchard M. Biomonitoring of exposure to multiple metal components in urine, hair and nails of apprentice welders performing shielded metal arc welding (SMAW). ENVIRONMENTAL RESEARCH 2023; 239:117361. [PMID: 37844685 DOI: 10.1016/j.envres.2023.117361] [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: 07/18/2023] [Revised: 10/05/2023] [Accepted: 10/08/2023] [Indexed: 10/18/2023]
Abstract
Welding fumes are associated with various diseases. Increased air levels of metals were reported during welding. However, few multielement biomonitoring studies were conducted to assess the actual dose of metal components absorbed in apprentice welders in a learning environment. This research aimed to establish the nature and level of exposure to welding fumes and their metallic components in apprentice welders performing 'Shielded Metal Arc Welding' (SMAW), based on multi-element and multi-matrix analyses. A total of 86 apprentice welders were recruited in three different schools in Montreal, Québec, Canada. Twenty-one elements were measured in urine, hair, fingernail, and toenail samples collected at the beginning of the program and at the end of SMAW practical training. Concentrations of welding fumes and 12 metals were also determined in personal respirable air samples collected over a typical workday in a subgroup of 19 apprentices. Levels of manganese (Mn), iron (Fe) and nickel (Ni) in urine and Mn in hair were higher in samples taken at the end of the SMAW module compared to the beginning of training, while there was no significant difference for the other elements or for nail concentrations. Geometric mean concentrations [5th-95th percentiles] reached 0.31 [0.032-2.84], 9.4 [3.1-51] and 0.87 [0.35-3.1] μg/g creat. in post-shift urine, respectively, for Mn, Fe and Ni, and 0.37 [0.46-6.4] μg Mn/g hair at the end of SWAW. Median concentrations [5th-95th percentiles] were 29 [4.6-1200], 120 [27-3100] and 0.31 [
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Affiliation(s)
- Jairo Buitrago Cortes
- Department of Environmental and Occupational Health, Chair in Toxicological Risk Assessment and Management, and Public Health Research Center (CReSP), University of Montreal, Roger-Gaudry Building, U436, P.O. Box 6128, Main Station, Montreal, Quebec, H3C 3J7, Canada
| | - Philippe Sarazin
- Chemical and Biological Hazards Prevention, Institut de recherche Robert-Sauvé en santé et en sécurité du travail, 505 Boulevard de Maisonneuve O, Montréal, Québec, H3A 3C2, Canada
| | - Denis Dieme
- Department of Environmental and Occupational Health, Chair in Toxicological Risk Assessment and Management, and Public Health Research Center (CReSP), University of Montreal, Roger-Gaudry Building, U436, P.O. Box 6128, Main Station, Montreal, Quebec, H3C 3J7, Canada
| | - Jonathan Côté
- Department of Environmental and Occupational Health, Chair in Toxicological Risk Assessment and Management, and Public Health Research Center (CReSP), University of Montreal, Roger-Gaudry Building, U436, P.O. Box 6128, Main Station, Montreal, Quebec, H3C 3J7, Canada
| | - Capucine Ouellet
- Chemical and Biological Hazards Prevention, Institut de recherche Robert-Sauvé en santé et en sécurité du travail, 505 Boulevard de Maisonneuve O, Montréal, Québec, H3A 3C2, Canada
| | - Naïma El Majidi
- Department of Environmental and Occupational Health, Chair in Toxicological Risk Assessment and Management, and Public Health Research Center (CReSP), University of Montreal, Roger-Gaudry Building, U436, P.O. Box 6128, Main Station, Montreal, Quebec, H3C 3J7, Canada
| | - Michèle Bouchard
- Department of Environmental and Occupational Health, Chair in Toxicological Risk Assessment and Management, and Public Health Research Center (CReSP), University of Montreal, Roger-Gaudry Building, U436, P.O. Box 6128, Main Station, Montreal, Quebec, H3C 3J7, Canada.
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Lv L, Liu B, Yu Y, Dong W, Gao L, He Y. Heavy metals in paired samples of hair and nails in China: occurrence, sources and health risk assessment. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2023; 45:3171-3185. [PMID: 36167881 DOI: 10.1007/s10653-022-01400-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 09/13/2022] [Indexed: 06/01/2023]
Abstract
The occurrence of heavy metals including chromium (Cr), nickel (Ni), copper (Cu), zinc (Zn), arsenic (As), cadmium (Cd) and lead (Pb) was investigated in paired samples of hair and nails collected from 121 volunteers in 16 cities, China. Results showed that the mean concentrations of Zn, Cu, As, Pb, Cr, Ni and Cd were 205, 18.0, 7.79, 6.18, 3.54, 2.02, 0.533 μg g-1 in hair and 103, 8.09, 0.760, 7.27, 6.07, 8.81, 0.485 μg g-1 in nails, respectively. The concentrations of Zn, Ni, Cr, Cd and Pb were positively correlated in paired samples of hair and nails, whereas a negative correlation was found for Cu and As between hair and nails. Higher concentrations of heavy metals were found in northern China than southern China. The multivariate analysis of variance revealed that dwelling environment was the dominant factor influencing the levels of Cd in hair (p < 0.05), while age was the dominant factor influencing the levels of Cr in nails (p < 0.05). Moreover, industrial pollution and smoking were also the important factors leading to the accumulation of heavy metals in human body. Principal component analysis (PCA) showed that industrial pollution and decoration material immersion were the main factors for the high concentrations of Cr and Ni in hair, accounting for 62.9% of the total variation; As in hair was dominantly related to groundwater pollution. The concentrations of heavy metals were within the recommended ranges in nails from this study. However, the mean levels of Cr, Ni and As in hair exceeded their recommended reference values, indicating potential health risks from heavy metals for residents in China.
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Affiliation(s)
- Linyang Lv
- College of Chemistry, Changchun Normal University, Changchun, 130032, China
| | - Baolin Liu
- College of Chemistry, Changchun Normal University, Changchun, 130032, China.
| | - Yong Yu
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
| | - Weihua Dong
- College of Geographical Sciences, Changchun Normal University, Changchun, 130032, China
| | - Lei Gao
- College of Chemistry, Changchun Normal University, Changchun, 130032, China
| | - Yaowei He
- College of Chemistry, Changchun Normal University, Changchun, 130032, China
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Bali V, Khajuria Y, Maniyar V, Rai PK, Kumar U, Ghany C, Gondal M, Singh VK. Quantitative analysis of human hairs and nails. Biophys Rev 2023; 15:401-417. [PMID: 37396444 PMCID: PMC10310683 DOI: 10.1007/s12551-023-01069-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 05/23/2023] [Indexed: 07/04/2023] Open
Abstract
Hair and nails are human biomarkers capable of providing a continuous assessment of the concentrations of elements inside the human body to indicate the nutritional status, metabolic changes, and the pathogenesis of various human diseases. Laser-induced breakdown spectroscopy (LIBS) and X-ray fluorescence (XRF) spectrometry are robust and multi-element analytical techniques able to analyze biological samples of various kinds for disease diagnosis. The primary objective of this review article is to focus on the major developments and advances in LIBS and XRF for the elemental analysis of hair and nails over the last 10-year period. The developments in the qualitative and quantitative analyses of human hair and nail samples are discussed in detail, with special emphasis on the key aspects of elemental imaging and distribution of essential and non-essential elements within the hair and nail tissue samples. Microchemical imaging applications by LIBS and XRF (including micro-XRF and scanning electron microscopy, SEM) are also presented for healthy as well as diseased tissue hair and nail samples in the context of disease diagnosis. In addition, main challenges, prospects, and complementarities of LIBS and XRF toward analyzing human hair and nails for disease diagnosis are also thoroughly discussed here.
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Affiliation(s)
- Varun Bali
- School of Physics, Shri Mata Vaishno Devi University, Katra, Jammu and Kashmir, 182320 India
| | - Yugal Khajuria
- School of Physics, Shri Mata Vaishno Devi University, Katra, Jammu and Kashmir, 182320 India
| | | | - Pradeep K. Rai
- Department of Urology and Nephrology, Opal Hospital, Kakarmatta, Varanasi, Uttar Pradesh 221005 India
| | - Upendra Kumar
- Advanced Functional Materials Laboratory, Department of Applied Sciences, IIIT Allahabad, Prayagraj, Uttar Pradesh 211005 India
| | - Charles Ghany
- Department of Engineering, Computer Science, and Physics, Mississippi College, Clinton, MS 39056 USA
| | - M.A. Gondal
- Laser Research laboratory, Physics Department, IRC- Hydrogen and Energy Storage, King Fahd University of Petroleum and Minerals, Dhahran, 31261 Saudi Arabia
| | - Vivek K. Singh
- School of Physics, Shri Mata Vaishno Devi University, Katra, Jammu and Kashmir, 182320 India
- Department of Physics, University of Lucknow, Lucknow, Uttar Pradesh 226007 India
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Moradi A, Honarjoo N, Besalatpour AA, Etemadifar M. Human exposure to dust and heavy metals in industrial regions and its relationship with the prevalence of multiple sclerosis disease. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:471. [PMID: 36929205 DOI: 10.1007/s10661-023-11017-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 02/10/2023] [Indexed: 06/18/2023]
Abstract
In recent decades, multiple sclerosis (MS) diseases have been significantly prevalent in some industrial areas of Iran, such as steel industrial areas in Isfahan province (central Iran). In this study, the environmental impacts of two steel mill factories in Isfahan province and their effects on the spread of MS in the region were investigated. To examine the extent of exposure, seasonal dust samples were collected from 15 sites around the two investigated factories. The annual dust deposition rate (DDR) was then determined and the concentrations of lead (Pb), cadmium (Cd), nickel (Ni), cobalt (Co), and manganese (Mn) in the dust samples were measured. Furthermore, the concentration of the mentioned elements was determined in the nail samples taken from 40 MS patients and 40 healthy people (control) living in the study region. The interpolated map extracted from the DDR values showed the highest dust deposition around the two studied steel factories, which decreases with increasing distance from them. The enrichment factor (EF) of heavy metals was the highest at the distance between the two steel factories, decreasing by moving away from them which indicate that these two steel factories are the source of investigated heavy metals in the region. The statistical analysis also revealed significant differences (P < 0.01) between the concentration of heavy metals measured in nail samples taken from MS patients and healthy people. The mean Pb concentration measured in the nail sample taken from MS patients was more than 18 times that of healthy people (93.45 and 5.02 mg/kg, respectively). These results revealed a buildup of heavy metals in the body of MS patients much more than usual, originating from the activities of two investigated steel companies in the region.
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Affiliation(s)
- Anahita Moradi
- Department of Soil Science, Islamic Azad University, Isfahan (Khorasgan) Branch, Jei Street , Isfahan, 81551-39998, Iran
| | - Naser Honarjoo
- Department of Soil Science, Islamic Azad University, Isfahan (Khorasgan) Branch, Jei Street , Isfahan, 81551-39998, Iran.
| | | | - Masoud Etemadifar
- Department of Neurology, Isfahan University of Medical Sciences, Isfahan, 81744, Iran
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Chan YN, Wang P, Chun KH, Lum JTS, Wang H, Zhang Y, Leung KSY. A machine learning approach for early prediction of gestational diabetes mellitus using elemental contents in fingernails. Sci Rep 2023; 13:4184. [PMID: 36918683 PMCID: PMC10015050 DOI: 10.1038/s41598-023-31270-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 03/09/2023] [Indexed: 03/16/2023] Open
Abstract
The aim of this pilot study was to predict the risk of gestational diabetes mellitus (GDM) by the elemental content in fingernails and urine with machine learning analysis. Sixty seven pregnant women (34 control and 33 GDM patient) were included. Fingernails and urine were collected in the first and second trimesters, respectively. The concentrations of elements were determined by inductively coupled plasma-mass spectrometry. Logistic regression model was applied to estimate the adjusted odd ratios and 95% confidence intervals. The predictive performances of multiple machine learning algorithms were evaluated, and an ensemble model was built to predict the risk for GDM based on the elemental contents in the fingernails. Beryllium, selenium, tin and copper were positively associated with the risk of GDM while nickel and mercury showed opposite result. The trained ensemble model showed larger area under curve (AUC) of receiver operating characteristic curve (0.81) using fingernail Ni, Cu and Se concentrations. The model was validated by external data set with AUC = 0.71. In summary, the results of the present study highlight the potential of fingernails, as an alternative sample, together with machine learning in human biomonitoring studies.
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Affiliation(s)
- Yun-Nam Chan
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR
| | - Pengpeng Wang
- Key Laboratory of Public Health Safety, Ministry of Education, School of Public Health, Fudan University, Shanghai, 200032, China
- Key Lab of Health Technology Assessment, National Health Commission of the People's Republic of China (Fudan University), Shanghai, China
| | - Ka-Him Chun
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR
| | - Judy Tsz-Shan Lum
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR
| | - Hang Wang
- Key Laboratory of Public Health Safety, Ministry of Education, School of Public Health, Fudan University, Shanghai, 200032, China
- Key Lab of Health Technology Assessment, National Health Commission of the People's Republic of China (Fudan University), Shanghai, China
| | - Yunhui Zhang
- Key Laboratory of Public Health Safety, Ministry of Education, School of Public Health, Fudan University, Shanghai, 200032, China
- Key Lab of Health Technology Assessment, National Health Commission of the People's Republic of China (Fudan University), Shanghai, China
| | - Kelvin Sze-Yin Leung
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR.
- HKBU Institute of Research and Continuing Education, Shenzhen Virtual University Park, Shenzhen, China.
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Domingo MG, Nalli GA, Tasat DR, Olmedo DG. Exfoliated oral mucosa cells as bioindicators of short- and long-term systemic titanium contamination. J Trace Elem Med Biol 2023; 76:127114. [PMID: 36516572 DOI: 10.1016/j.jtemb.2022.127114] [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: 03/25/2022] [Revised: 11/03/2022] [Accepted: 11/30/2022] [Indexed: 12/07/2022]
Abstract
BACKGROUND Humans are exposed to exogenous sources of titanium-containing particles that can enter the body mainly by inhalation, ingestion, or dermal absorption. Given the widespread use of biomaterials in medicine, the surface of a titanium (Ti) biomedical device is a potential endogenous source of Ti ions and/or Ti-containing particles, such as TiO2 micro-(MPs) and nano-particles (NPs), resulting from biotribocorrosion processes. Ti ions or Ti-containing particles may deposit in epithelial cells of the oral mucosa, and the latter may therefore serve as bioindicators of short and long-term systemic Ti contamination. The aim of the present study was to histologically and quantitatively evaluate the presence of Ti traces in cells exfoliated from the oral mucosa as possible bioindicators of systemic contamination with this metal at short and long-term experimental time points METHODS: Thirty Wistar rats were intraperitoneally injected with a suspension of titanium dioxide (TiO2) (0.16 g/100 g body weight of TiO2 in 5 ml of NaCl 0.9%) using 5 nm NPs (Group: TiO2-NP5; n = 10), 45 µm MPs (Group: TiO2-MP45; n = 10), or vehicle alone (Control group; n = 10). At one and six months post-injection, right-cheek mucosa cells were obtained by exfoliative cytology using a cytobrush; they were spray fixed and stained using Safranin or the Papanicolaou technique. The smears were cytologically evaluated (light microscopy) to determine the presence of particulate material, which was also analyzed microchemically (SEM-EDS). Left-cheek mucosa cells were similarly obtained and re-suspended in 5 ml of PBS (pH: 7.2-7.4); the samples corresponding to each group were pooled together and analyzed spectrometrically (ICP-MS) to determine Ti concentration in each of the studied groups. Blood samples were obtained for histological determination of the presence of particulate material on Safranin-stained blood smears and determination of plasma concentration of Ti by ICP-MS RESULTS: Different size and shape metal-like particles were observed inside and outside epithelial cells in TiO2-NP5 and TiO2-MP45 cytological smears at both one and six months post-injection. EDS analysis showed the presence of Ti in the particles. ICP-MS revealed higher Ti concentrations in both TiO2 injected groups compared to the control group. In addition, Ti concentration did not vary with time or particle size. Monocytes containing particles were observed in blood smears of TiO2-exposed animals one- and six-months post-injection. Plasma levels of Ti were significantly higher in TiO2-NP5- and TiO2-MP45- exposed animals than in controls (p < 0.05), and Ti concentration was significantly higher at one month than at six months in both TiO2-exposed groups (p < 0.05). CONCLUSIONS Cells exfoliated from the oral mucosa could be used as bioindicators of short- and long-term systemic contamination with Ti. Exfoliative cytology could be used as a simple, non-invasive, and inexpensive diagnostic method for monitoring biotribocorrosion of Ti implants and patient clinical follow-up.
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Affiliation(s)
- Mariela Gisele Domingo
- Universidad de Buenos Aires, Facultad de Odontología, Cátedra de Anatomía Patológica, Buenos Aires, Argentina, M. T. de Alvear 2142, 2° A, C1122AAH Buenos Aires, Argentina; Becario de Investigación de la Universidad de Buenos Aires, Buenos Aires, Argentina.
| | - Gabriela Alejandra Nalli
- Universidad de Buenos Aires, Facultad de Odontología, Cátedra de Estomatología, Buenos Aires, Argentina, M. T. de Alvear 2142, 2° A, C1122AAH Buenos Aires, Argentina.
| | - Deborah Ruth Tasat
- Escuela de Ciencia y Tecnología, Universidad Nacional de San Martín, San Martín, Buenos Aires, UNSAM Campus Miguelete, 25 de Mayo y Francia, San Martín, B1650HMN Buenos Aires, Argentina; CONICET - Universidad Nacional de San Martín, Instituto de Tecnologías Emergentes y Ciencias Aplicadas (ITECA), San Martín, Buenos Aires, UNSAM Campus Miguelete, 25 de Mayo y Francia, San Martín, B1650HMN Buenos Aires, Argentina; Universidad de Buenos Aires, Facultad de Odontología, Cátedra de Histología y Embriología, Buenos Aires, Argentina, M. T. de Alvear 2142, 2° A, C1122AAH Buenos Aires, Argentina.
| | - Daniel Gustavo Olmedo
- Universidad de Buenos Aires, Facultad de Odontología, Cátedra de Anatomía Patológica, Buenos Aires, Argentina, M. T. de Alvear 2142, 2° A, C1122AAH Buenos Aires, Argentina; CONICET, Buenos Aires, Argentina, Godoy Cruz 2290, C1425FQB Buenos Aires, Argentina.
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10
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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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11
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Ge X, He J, Wang L, Zhao L, Wang Y, Wu G, Liu W, Shu Y, Gong W, Ma XL, Wang Y, Jiang BH, Liu LZ. Epigenetic alterations of CXCL5 in Cr(VI)-induced carcinogenesis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 838:155713. [PMID: 35660107 PMCID: PMC9290188 DOI: 10.1016/j.scitotenv.2022.155713] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 04/25/2022] [Accepted: 05/01/2022] [Indexed: 05/14/2023]
Abstract
Chronic exposure to hexavalent chromium compounds [Cr(VI)] is associated with an increased risk of cancers, but the molecular mechanisms remain to be elucidated. In this study, we found that CXCL5 levels in peripheral blood monocytes (PBMCs) and plasma from workers with occupational exposure to Cr(VI) were dramatically upregulated compared to non-exposure healthy subjects, and plasma C-X-C Motif Chemokine Ligand 5 (CXCL5) CXCL5 levels were positively correlated with Cr concentrations in subjects' toenails. Zinc chromate exposed mice showed higher levels of CXCL5 and its receptor CXCR2 in lung tissues, and in PBMCs. Similar CXCL5 upregulation was evident in Cr(VI)-induced transformed (Cr-T) cells with long-term Cr(VI) treatment. Mechanistic studies showed that elevated CXCL5 expression levels were regulated by Cr(VI)-induced histone modifications and DNA hypomethylation, and that the c-Myc/p300 complex was a key upstream regulator of histone H3 acetylation. CXCL5 overexpression promoted Cr(VI)-induced the epithelial to mesenchyme transition (EMT) by upregulating zinc finger E-box binding homeobox 1 (ZEB1) to promote tumor development. Our findings identify a novel mechanism by which CXCL5 is upregulated and promotes EMT and carcinogenesis upon chronic Cr(VI) exposure. Our work also implies that CXCL5 mRNA and protein levels will elevate in PBMCs and serum after occupational Cr(VI) exposure, which may be a potential target and biomarker for cancer prevention and health surveillance among populations exposed to Cr(VI).
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Affiliation(s)
- Xin Ge
- Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, PA 19107, USA; Department of Nutrition and Food Hygiene, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, 211166, China
| | - Jun He
- Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Lin Wang
- Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, PA 19107, USA; Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Lei Zhao
- Department of Medical Oncology, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Yifang Wang
- Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Gang Wu
- Department of Occupational Health, Changzhou Center of Disease Control, Changzhou, Jiangsu, China
| | - Wenjing Liu
- Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Yongqian Shu
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Wei Gong
- Department of Occupational Health, Jiangsu Center of Disease Control, Nanjing, Jiangsu, China
| | - Xin-Liang Ma
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Yajing Wang
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Bing-Hua Jiang
- Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, PA 19107, USA.
| | - Ling-Zhi Liu
- Department of Medical Oncology, Thomas Jefferson University, Philadelphia, PA 19107, USA.
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12
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Vásquez-Procopio J, Espejel-Nuñez A, Torres-Torres J, Martinez-Portilla RJ, Espino Y. Sosa S, Mateu-Rogell P, Ortega-Castillo V, Tolentino-Dolores M, Perichart-Perera O, Franco-Gallardo JO, Carranco-Martínez JA, Prieto-Rodríguez S, Guzmán-Huerta M, Missirlis F, Estrada-Gutierrez G. Inflammatory-Metal Profile as a Hallmark for COVID-19 Severity During Pregnancy. Front Cell Dev Biol 2022; 10:935363. [PMID: 36016660 PMCID: PMC9395991 DOI: 10.3389/fcell.2022.935363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 06/14/2022] [Indexed: 01/10/2023] Open
Abstract
Pregnancy makes women more susceptible to infectious agents; however, available data on the effect of SARS-CoV-2 on pregnant women are limited. To date, inflammatory responses and changes in serum metal concentration have been reported in COVID-19 patients, but few associations between metal ions and cytokines have been described. The aim of this study was to evaluate correlations between inflammatory markers and serum metal ions in third-trimester pregnant women with varying COVID-19 disease severity. Patients with severe symptoms had increased concentrations of serum magnesium, copper, and calcium ions and decreased concentrations of iron, zinc, and sodium ions. Potassium ions were unaffected. Pro-inflammatory cytokines IL-6, TNF-α, IL-8, IL-1α, anti-inflammatory cytokine IL-4, and the IP-10 chemokine were induced in the severe presentation of COVID-19 during pregnancy. Robust negative correlations between iron/magnesium and zinc/IL-6, and a positive correlation between copper/IP-10 were observed in pregnant women with the severe form of the disease. Thus, coordinated alterations of serum metal ions and inflammatory markers – suggestive of underlying pathophysiological interactions—occur during SARS-CoV-2 infection in pregnancy.
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Affiliation(s)
- Johana Vásquez-Procopio
- Department of Immunobiochemistry, Instituto Nacional de Perinatología, Mexico City, Mexico
- Department of Physiology, Biophysics and Neuroscience, Center for Research and Advanced Studies (Cinvestav), Mexico City, Mexico
| | - Aurora Espejel-Nuñez
- Department of Immunobiochemistry, Instituto Nacional de Perinatología, Mexico City, Mexico
| | | | | | | | - Paloma Mateu-Rogell
- Clinical Research Division, Instituto Nacional de Perinatología, Mexico City, Mexico
| | | | | | - Otilia Perichart-Perera
- Department of Nutrition and Bioprogramming, Instituto Nacional de Perinatología, Mexico City, Mexico
| | | | | | | | - Mario Guzmán-Huerta
- Department of Translational Medicine, Instituto Nacional de Perinatología, Mexico City, Mexico
| | - Fanis Missirlis
- Department of Physiology, Biophysics and Neuroscience, Center for Research and Advanced Studies (Cinvestav), Mexico City, Mexico
- *Correspondence: Guadalupe Estrada-Gutierrez, ; Fanis Missirlis,
| | - Guadalupe Estrada-Gutierrez
- Research Division, Instituto Nacional de Perinatología, Mexico City, Mexico
- *Correspondence: Guadalupe Estrada-Gutierrez, ; Fanis Missirlis,
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Masjedi MR, Dobaradaran S, Keshmiri S, Taghizadeh F, Arfaeinia H, Fanaei F, Behroozi M, Nasrzadeh F, Joukar M. Use of toenail-bounded heavy metals to characterize occupational exposure and oxidative stress in workers of waterpipe/cigarette cafés. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2021; 43:1783-1797. [PMID: 33098497 DOI: 10.1007/s10653-020-00751-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 10/09/2020] [Indexed: 06/11/2023]
Abstract
Tobacco smoke is known for releasing metals in indoor air of waterpipe/cigarette cafés. However, the worker exposure to metals, and its association with oxidative stress in these cafés are still unclear. To this end, 54 workers and 38 customers from waterpipe/cigarette cafés (the exposed group), 30 workers from non-smoking cafés (the control group 1 (CG_1)) and 32 individuals from the general population (the control group 2 (CG_2)) were selected and toenails samples were then taken from them. Our findings revealed a significant difference in terms of toenail-bounded metal levels between the exposure and control groups (CG_1 and CG_2) (Mann-Whitney U test, Pvalue < 0.05). This study has also indicated that "type of tobacco" could be considered as a predictor for toenail-bounded heavy metals. Furthermore, our research's results suggest that toenail-bounded heavy metals are positively and significantly correlated with urinary levels of 8- hydroxy-2'-deoxyguanosine (8-OHdG, as a biomarker for the degradation of deoxyribonucleic acid (DNA) oxidative stress). Therefore, it can be concluded that workers of waterpipe/cigarette cafés are at high risks of adverse health of DNA oxidative degradation.
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Affiliation(s)
- Mohammad Reza Masjedi
- Tobacco Control Research Center (TCRC), Iranian Anti-Tobacco Association, Tehran, Iran
| | - Sina Dobaradaran
- Systems Environmental Health and Energy Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
- Department of Environmental Health Engineering, Faculty of Health and Nutrition, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Saeed Keshmiri
- Systems Environmental Health and Energy Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
- Faculty of Medicine, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Farhad Taghizadeh
- Department of Environmental Health Engineering, Faculty of Health, Iran University of Medical Sciences, Tehran, Iran
| | - Hossein Arfaeinia
- Systems Environmental Health and Energy Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran.
- Department of Environmental Health Engineering, Faculty of Health and Nutrition, Bushehr University of Medical Sciences, Bushehr, Iran.
| | - Farzad Fanaei
- Department of Environmental Health Engineering, Faculty of Health, Iran University of Medical Sciences, Tehran, Iran
| | - Mojtaba Behroozi
- Systems Environmental Health and Energy Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Farzaneh Nasrzadeh
- Systems Environmental Health and Energy Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Melika Joukar
- 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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14
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Lotah HNA, Agarwal AK, Khanam R. Heavy metals in hair and nails as markers of occupational hazard among welders working in United Arab Emirates. Toxicol Res 2021; 38:63-68. [PMID: 35070942 PMCID: PMC8748598 DOI: 10.1007/s43188-021-00091-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Revised: 01/18/2021] [Accepted: 01/25/2021] [Indexed: 01/03/2023] Open
Abstract
Studies have shown that hair and nail samples can be used as a marker to assess occupational exposure to heavy metals. The objective of this study was to estimate the levels of heavy metals: Lead (Pb), Nickel (Ni), Cadmium (Cd), and Manganese (Mn) in hair and nail samples of welders working in United Arab Emirates and to find an association between the heavy metal concentration with the parameters like smoking habits, exposure/day, years of experience and use of protective personal equipment (PPE). Hair and toes nail samples were collected from exposed and non-exposed subjects with respect to, social habits, exposure/day and years of welding experience. The levels of Pb, Cd, Mn, and Ni, in hair and toenails, assayed by atomic absorption spectrophotometer. We observed that the metal concentration was higher in toenail as compared to hair samples in both the groups. Cd was significantly high in both the groups whereas, Mn in the hair was high in the exposed group. The Mn in hair was notably higher among smokers and the Cd in hair and Ni in the nail samples was significantly higher in the subjects with > 8 h/day exposure. The concentration of Cd and Ni in hair increased with increasing years of experience and was maximum in the subjects with welding experience of > 20 years. Our results signify that hair and nail samples can be used as an indicator to heavy metal exposure. Given that the present study shows high level of some metals in the hair and nail of welders, awareness of occupational hazards and annual assessment of welder's health is necessary.
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Affiliation(s)
| | - Anoop Kumar Agarwal
- Department of Biomedical Sciences, College of Medicine, Gulf Medical University, Ajman, United Arab Emirates
| | - Razia Khanam
- Department of Biomedical Sciences, College of Medicine, Gulf Medical University, Ajman, United Arab Emirates
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15
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Exposure to Toenail Heavy Metals and Child Behavior Problems in Nine-Year-Old Children: A Cross-Sectional Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17114120. [PMID: 32527015 PMCID: PMC7313054 DOI: 10.3390/ijerph17114120] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 05/29/2020] [Accepted: 06/08/2020] [Indexed: 12/20/2022]
Abstract
Behavioral problems are multifactorial and includes perinatal, maternal, family, parenting, socio-economic and personal risk factors, but less is known about the association of postnatal heavy metals on children’s behavioral problems in Pacific Island children. Methods: A cohort of eligible nine-year-old children within a Pacific Island Families longitudinal study were recruited for a cross-sectional study. Child behavior problems were assessed using the child behavior checklist. Heavy metals (including Ni, Cu, Pb, Al, Cr and Cd) were determined in toenails, after acid digestion and analyzed using inductively coupled plasma mass spectrometry. Other factors such as lifestyle (smoking in pregnancy), health outcomes (obesity, health status), demographics (gender, ethnicity, parents’ marital status) and socioeconomic status (household income levels) were also collected. The statistical analysis included t-tests for independent sample and Mann–Whitney U-test, and chi-square or Fisher’s exact tests of independence for comparisons of the proportions. Regression models tested the hypothesized risk factors for behavior outcomes. Results: This observational study enrolled 278 eligible Pacific Island children living in Auckland, New Zealand. The prevalence of behavioral problems in the clinical range was high (22%) but there was no significant association between heavy metals in toenails and adverse behavioral outcomes. Conclusion: Regular monitoring and assessments of children for environmental risk factors, as well as social and lifestyle factors for behavior problems, continues. Alternative indicators of exposure to heavy metal should be evaluated.
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16
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Savinov SS, Sharypova RM, Drobyshev AI. Determination of the Trace Element Composition of Human Nails. JOURNAL OF ANALYTICAL CHEMISTRY 2020. [DOI: 10.1134/s1061934820030168] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Fuhrimann S, Winkler MS, Staudacher P, Weiss FT, Stamm C, Eggen RI, Lindh CH, Menezes-Filho JA, Baker JM, Ramírez-Muñoz F, Gutiérrez-Vargas R, Mora AM. Exposure to Pesticides and Health Effects on Farm Owners and Workers From Conventional and Organic Agricultural Farms in Costa Rica: Protocol for a Cross-Sectional Study. JMIR Res Protoc 2019; 8:e10914. [PMID: 30681969 PMCID: PMC6367668 DOI: 10.2196/10914] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 08/30/2018] [Accepted: 10/10/2018] [Indexed: 12/15/2022] Open
Abstract
Background Pesticide use is increasing in low- and middle-income countries (LMICs) including Costa Rica. This increase poses health risks to farm owners, farm workers, and communities living near agricultural farms. Objective We aimed to examine the health effects associated with occupational pesticide exposure in farm owners and workers from conventional and organic smallholder farms in Costa Rica. Methods We conducted a cross-sectional study involving 300 owners and workers from organic and conventional horticultural smallholder farms in Zarcero County, Costa Rica. During the baseline study visit, we administered a structured, tablet-based questionnaire to collect data on sociodemographic characteristics, pesticide exposure, and health conditions (eg, respiratory and allergic outcomes and acute pesticide intoxication symptoms) and administered a neurobehavioral test battery (eg, Finger Tapping Test and Purdue Pegboard); we measured blood pressure, anthropometry (height, weight, and waist circumference), and erythrocytic acetylcholinesterase activity and also collected urine samples. In addition, a functional neuroimaging assessment using near-infrared spectroscopy was conducted with a subset of 50 study participants. During the follow-up study visit (~2-4 weeks after the baseline), we administered participants a short questionnaire on recent pesticide exposure and farming practices and collected hair, toenail, and urine samples. Urine samples will be analyzed for various pesticide metabolites, whereas toenails and hair will be analyzed for manganese (Mn), a biomarker of exposure to Mn-containing fungicides. Self-reported pesticide exposure data will be used to develop exposure intensity scores using an exposure algorithm. Furthermore, exposure-outcome associations will be examined using linear and logistic mixed-effects regression models. Results Fieldwork for our study was conducted between May 2016 and August 2016. In total, 113 farm owners and 187 workers from 9 organic and 83 conventional horticultural smallholder farms were enrolled. Data analyses are ongoing and expected to be published between 2019 and 2020. Conclusions This study is one of the first to examine differences in health effects due to pesticide exposure between farm owners and workers from organic and conventional smallholder farms in an LMIC. We expect that this study will provide critical data on farming practices, exposure pathways, and how occupational exposure to pesticides may affect farm owners and workers’ health. Finally, we hope that this study will allow us to identify strategies to reduce pesticide exposure in farm owners and workers and will potentially lay the groundwork for a future longitudinal study of health outcomes in farm owners and workers exposed to pesticides. International Registered Report Identifier (IRRID) DERR1-10.2196/10914
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Affiliation(s)
- Samuel Fuhrimann
- School of Public Health and Family Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Mirko S Winkler
- Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | - Philipp Staudacher
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Dübendorf, Switzerland.,Institute of Biogeochemistry and Pollutant Dynamics, Department of Environmental Systems Science, ETH Zürich, Zürich, Switzerland
| | - Frederik T Weiss
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Dübendorf, Switzerland.,Institute of Biogeochemistry and Pollutant Dynamics, Department of Environmental Systems Science, ETH Zürich, Zürich, Switzerland
| | - Christian Stamm
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Dübendorf, Switzerland.,Institute of Biogeochemistry and Pollutant Dynamics, Department of Environmental Systems Science, ETH Zürich, Zürich, Switzerland
| | - Rik Il Eggen
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Dübendorf, Switzerland.,Institute of Biogeochemistry and Pollutant Dynamics, Department of Environmental Systems Science, ETH Zürich, Zürich, Switzerland
| | - Christian H Lindh
- Division of Occupational and Environmental Medicine, Institute of Laboratory Medicine, Lund University, Lund, Sweden
| | - José A Menezes-Filho
- Laboratory of Toxicology, Faculty of Pharmacy, Federal University of Bahia, Bahia, Brazil
| | - Joseph M Baker
- Department of Psychiatry and Behavioral Sciences, School of Medicine, Stanford University, Stanford, CA, United States
| | - Fernando Ramírez-Muñoz
- Central American Institute for Studies on Toxic Substances, Universidad Nacional, Heredia, Costa Rica
| | - Randall Gutiérrez-Vargas
- Centro de Investigación y Diagnóstico en Salud y Deporte, Universidad Nacional, Heredia, Costa Rica
| | - Ana M Mora
- Central American Institute for Studies on Toxic Substances, Universidad Nacional, Heredia, Costa Rica
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NGAU LAURADINES, WEE BOONSIONG, SALIM NAZARATULASHIFAABD. Trace Element Assessment in Fingernails of Adult Females. TRENDS IN UNDERGRADUATE RESEARCH 2018; 1:a8-15. [DOI: 10.33736/tur.1135.2018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Trace elements play a significant role in giving nutritional benefits to the body because they act as essential cofactors for all physiological processes. However, there are some trace elements which may bring more harm than good when entering the human body. Due to its ability to incorporate trace elements in an amount that is proportional to an individual’s dietary intake and environmental exposure, human fingernails are suitable biomarkers in assessing the health status of an individual as they reflect on the trace element concentration present in the body. This study has analysed fingernail samples of 23 adult females residing in Kuching and Kota Samarahan, Sarawak, Malaysia for four elements, namely Cd, Cu, Pb and Zn. By using flame atomic absorption spectroscopy (FAAS), the mean elemental concentrations found in fingernail samples of research participants were 171.8 ± 33.8 μg/g for Zn, 27.8 ± 14.8 μg/g for Cu and 2.64 ± 0.94 μg/g for Pb. Cd concentrations were not able to be detected as they were below the detection limits. A standard reference material, NIST 1568b Rice Flour was used to verify the methods used in elemental analysis using FAAS. Independent t-test which was used to compare the means of Zn and Cu between vegetarians and non-vegetarians showed no significant differences for both elements. Moreover, correlation analysis showed negative correlations between Cu/Zn pair and Pb/Zn pair, whereas significant positive correlation was obtained for Cu/Pb pair. The overall data from this study showed good agreements with data obtained from studies in other countries. Therefore, the current data in this study represents the latest background elemental concentrations in fingernails of the residents in Kuching and Kota Samarahan, Sarawak.Keywords: Adult females, fingernails, flame atomic absorption spectroscopy (FAAS), trace elements
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Wongsasuluk P, Chotpantarat S, Siriwong W, Robson M. Using hair and fingernails in binary logistic regression for bio-monitoring of heavy metals/metalloid in groundwater in intensively agricultural areas, Thailand. ENVIRONMENTAL RESEARCH 2018; 162:106-118. [PMID: 29289858 DOI: 10.1016/j.envres.2017.11.024] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 11/14/2017] [Accepted: 11/17/2017] [Indexed: 06/07/2023]
Abstract
In this study, the hair and fingernails of the local people in an intensively cultivated agricultural area in Ubon Ratchathani province, Thailand, were used as biomarkers of exposure to arsenic (As) and heavy metals. The study area has shallow acidic groundwater that is contaminated with As and heavy metals. The local people often consume this shallow groundwater; thus, they are exposed to As and heavy metals. Hair and fingernail samples were collected to characterize the differences between shallow groundwater drinking (SGWD) and tap water drinking (TWD) residents. The concentrations of As and the heavy metals Cd, Pb and Hg were significantly higher in the hair samples from the SGWD group than those from the TWD group, especially for As (0.020-0.571 vs. 0.024-0.359µg/g) and Cd (0.009-0.575 vs. 0.013-0.230µg/g). Similarly, the concentrations of As and the heavy metals in the fingernail samples collected from the SGWD group were larger than those of the TWD group, especially for As (0.039-2.440µg/g vs. 0.049-0.806µg/g). The χ2 statistic and binary logistic regression were used to find the associated factors and assess the associated probabilities. The regression results show that the factors associated with the concentrations of As and the heavy metals in the hair samples were drinking water source, rate of water consumption, gender, bathing water source, education, smoking and underlying disease, whereas the factors associated with the concentrations of these species in the fingernail samples were drinking water source, gender, occupation, work hours per day, alcohol consumption, and the use of pesticides.
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Affiliation(s)
- Pokkate Wongsasuluk
- International Postgraduate Programs in Environmental Management, Graduate School, Chulalongkorn University, Bangkok 10330, Thailand; Center of Excellence on Hazardous Substance Management (HSM), Chulalongkorn University, Bangkok 10330, Thailand.
| | - Srilert Chotpantarat
- Center of Excellence on Hazardous Substance Management (HSM), Chulalongkorn University, Bangkok 10330, Thailand; Department of Geology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand; Research Program on Controls of Hazardous Contaminants in Raw Water Resources for Water Scarcity Resilience, Center of Excellence on Hazardous Substance Management (HSM), Chulalongkorn University, Bangkok 10330, Thailand.
| | - Wattasit Siriwong
- Thai Fogarty ITREOH Center, Chulalongkorn University, Bangkok 10330, Thailand; College of Public Health Science, Chulalongkorn University, Bangkok 10330, Thailand.
| | - Mark Robson
- Thai Fogarty ITREOH Center, Chulalongkorn University, Bangkok 10330, Thailand; New Jersey Agricultural Experiment Station, Rutgers University, New Brunswick, NJ, USA; School of Environmental and Biological Sciences, Rutgers University, NJ, USA.
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Savinov SS, Budalyaeva RM, Drobyshev AI. Atomic Emission Analysis of Human Nails for the Content of Trace Elements. JOURNAL OF ANALYTICAL CHEMISTRY 2018. [DOI: 10.1134/s1061934818020107] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Karatela S, Ward NI, Zeng IS, Paterson J. Status and interrelationship of toenail elements in Pacific children. J Trace Elem Med Biol 2018; 46:10-16. [PMID: 29413098 DOI: 10.1016/j.jtemb.2017.11.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 11/05/2017] [Accepted: 11/06/2017] [Indexed: 01/02/2023]
Abstract
OBJECTIVE Elemental deficiencies or in excess effects growth and development. Pacific population are at a disadvantage due to food insecurity as compared to New Zealand European households. This study aims to evaluate the status and interrelationship of elements (essential, non-essential and toxic) in nine-year-old Pacific children who were part of the Pacific Island Families Study living in New Zealand. MATERIALS AND METHODS This observational study included 278 eligible nine-year-old children. Essential elements (including calcium, chromium, cobalt, copper, iodine, iron, magnesium, manganese, selenium, zinc, molybdenum), non-essential and toxic elements (arsenic, aluminum, antimony, boron, cadmium, lead, mercury, nickel,) were determined in toenails and after acid digestion, analysed using inductively coupled plasma mass spectrometry. Principal component analysis and multivariate analysis of covariance was used to identify differences in the groups of elements and the inter-correlations between elements. RESULTS The mean calcium (868μg/g Ca), selenium (0.35μg/g Se) and zinc (129μg/g Zn) concentrations were lower while the mean cadmium (0.21μg/g Cd) lead (0.86μg/g Pb) and mercury (0.72μg/g Hg) concentrations were higher than the optimal health requirements. Ethnic differences in relation to toenail elemental concentrations were observed for aluminium and iron. Gender differences were observed for aluminium, antimony, arsenic and lead. Selenium and molybdenum were inversely associated with mercury. Manganese, zinc and calcium were positively associated. CONCLUSIONS This research contributes to the understanding of the elemental concentrations for Pacific children by using tissue samples from toenails, which improves the completeness of sampling than other tissues and provides a longer exposure time frame. The study also reports several inter-correlations between essential, non-essential and toxic elements in Pacific Island population.
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Affiliation(s)
- Shamshad Karatela
- University of Queensland, Faculty of Medicine School of Public Health, Herston Road, Herston, QLD 4006, Australia.
| | - Neil I Ward
- University of Surrey, Department of Chemistry FEPS, Guildford, Surrey GU2 7XH, UK
| | - Irene Suilan Zeng
- Middlemore Hospital, 100 Hospital Road, Otahuhu, 1640, Auckland, New Zealand
| | - Janis Paterson
- AUT University, School of Public Health and Psychosocial Studies, Auckland, New Zealand
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Qayyum MA, Shah MH. Study of trace metal imbalances in the blood, scalp hair and nails of oral cancer patients from Pakistan. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 593-594:191-201. [PMID: 28343039 DOI: 10.1016/j.scitotenv.2017.03.169] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 03/17/2017] [Accepted: 03/18/2017] [Indexed: 06/06/2023]
Abstract
Oral cancer is an important cause of cancer morbidity and mortality globally and exposure to trace metals alongside tobacco, alcohol and HPV are the important etiological factors in its development. Selected essential and toxic trace metals (Cd, Cr, Cu, Fe, Mn, Ni, Pb and Zn) were measured in the blood, scalp hair and nails of oral cancer patients and counterpart controls by atomic absorption spectrometry. Mean concentrations of Cd, Ni and Pb were found to be significantly higher (p<0.05) and those of Cu, Fe and Zn were considerably lower in the blood, scalp hair and nails of the patients than the controls. Most of the metal concentrations exhibited higher dispersion and asymmetry in the blood, scalp hair and nails of the patients compared with the controls. The correlation study revealed significantly diverse relationships among the metals in blood, scalp hair and nails of both donor groups. Variations in the metal levels were also noted for various stages (I, II, III & IV) as well as the types (adenocarcinoma and squamous cell carcinoma) of oral cancer. Multivariate cluster analysis of the metal levels in the patients were also significantly dissimilar than the controls. The study evidenced considerably divergent variations in the metal levels in oral cancer patients in comparison with the controls.
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Affiliation(s)
| | - Munir H Shah
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan.
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Tasat DR, Domingo MG, Bruno ME, Guglielmotti MB, Olmedo DG. Titanium Nanoparticle Size Influences Trace Concentration Levels in Skin Appendages. Toxicol Pathol 2017; 45:624-632. [DOI: 10.1177/0192623317711808] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
As a result of biotribocorrosion, the surface of a titanium (Ti) biomedical device can be a potential source of systemic contamination with Ti nanoparticles (NPs). Although NPs can be chemically similar, differences in particle size may lead to different biological responses. The aim of this experimental study was to determine Ti trace levels in skin appendages and plasma and explore the influence of NP size on trace levels using a murine model. Results showed the presence of Ti traces in the nails, hair, and plasma. The concentration of the smallest NPs (5 Nm) was higher than that of 10 Nm NPs in all the studied samples. Irrespective of NP size, Ti levels were always lower in plasma than in skin appendages. Ti levels were higher in nails than in hair. Ti NPs size influenced trace concentration levels in hair/nails, suggesting that 5 Nm Ti particles are more easily eliminated through these skin appendages. Given that the nails showed the highest levels of Ti, and that these skin appendages are not exposed to agents that can leach out Ti, as occurs with hair, we propose the nails as the most suitable and reliable bioindicator for monitoring systemic contamination with Ti.
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Affiliation(s)
- Deborah R. Tasat
- School of Science and Technology, National University of General San Martín, San Martín, Buenos Aires, Argentina
- Department of Histology and Embryology, School of Dentistry, University of Buenos Aires, Buenos Aires, Argentina
| | - Mariela G. Domingo
- Department of Oral Pathology, School of Dentistry, University of Buenos Aires, Buenos Aires, Argentina
| | - Marcos E. Bruno
- Department of Oral Pathology, School of Dentistry, University of Buenos Aires, Buenos Aires, Argentina
| | - María B. Guglielmotti
- Department of Oral Pathology, School of Dentistry, University of Buenos Aires, Buenos Aires, Argentina
- National Research Council (CONICET), Buenos Aires, Argentina
| | - Daniel G. Olmedo
- Department of Oral Pathology, School of Dentistry, University of Buenos Aires, Buenos Aires, Argentina
- National Research Council (CONICET), Buenos Aires, Argentina
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da Silveira Fleck A, Carneiro MFH, Barbosa F, Amantea SL, Rhoden CR. The use of tree barks and human fingernails for monitoring metal levels in urban areas of different population densities of Porto Alegre, Brazil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:2433-2441. [PMID: 27817142 DOI: 10.1007/s11356-016-7832-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Accepted: 10/03/2016] [Indexed: 06/06/2023]
Abstract
The aim of this study was to evaluate the use of tree barks as a bioindicator of atmospheric pollution in areas of contrasting population densities and to associate the levels of elements found in this bioindicator with those obtained in fingernail samples collected from students living in the same study areas. Tree bark samples were collected from urban areas near highways in regions with high (Area A), intermediate (Area B), and low (Area C) population densities of Porto Alegre, Brazil, and evaluated for chemical elements concentration. Since these areas also differed in traffic density, NO2 was measured by passive sampling. For a comparative purpose, the elements were also determined in fingernail samples collected from students living in the same areas. Accumulated elements were determined by inductively coupled plasma mass spectrometry (ICP-MS) and principal component analysis (PCA) was used as a tool in exploratory data analysis to identify possible sources. We found that Ba, Cd, Co, Cu, Mg, Mn, Ni, Pb, Sb, Sr, V, and Zn were at higher concentrations in tree barks in Area A, while Cd, Co, Cu, Mg, Mn, Ni, and Sr were at higher levels in students' fingernails of Area A as well. Furthermore, concentrations of elements found in barks were associated with those identified in fingernails collected from students living in the same areas. PCA demonstrated that vehicular traffic explained 66.4 % of the variance in tree bark and 50.8 % of the variance in fingernails. NO2 levels were significantly different among the areas, what is consistent with their respective vehicular flow and population density. In conclusion, we found conformance of elements levels accumulated in barks and fingernails at three monitoring areas with different profiles. The amount of traffic-related elements accumulated appears to be associated with the degree of urbanization and vehicular flow. Overall, data suggests a relationship between fingernails and tree bark as bioindicators of exposure to metals from air pollution.
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Affiliation(s)
- Alan da Silveira Fleck
- Laboratory of Atmospheric Pollution and Oxidative Stress, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Rua Sarmento Leite, 245, Porto Alegre, 90050-170, Brazil
| | - Maria Fernanda Hornos Carneiro
- Laboratory of Toxicology and Metals Essentiality, Faculty of Pharmaceutical Sciences of Ribeirão Preto, Sao Paulo University, Av. do Café s/n, Ribeirão Preto, São Paulo, 14049-903, Brazil
| | - Fernando Barbosa
- Laboratory of Toxicology and Metals Essentiality, Faculty of Pharmaceutical Sciences of Ribeirão Preto, Sao Paulo University, Av. do Café s/n, Ribeirão Preto, São Paulo, 14049-903, Brazil
| | - Sergio Luis Amantea
- Laboratory of Atmospheric Pollution and Oxidative Stress, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Rua Sarmento Leite, 245, Porto Alegre, 90050-170, Brazil
| | - Claudia Ramos Rhoden
- Laboratory of Atmospheric Pollution and Oxidative Stress, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Rua Sarmento Leite, 245, Porto Alegre, 90050-170, Brazil.
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Matas D, Keren-Rotem T, Koren L. A method to determine integrated steroid levels in wildlife claws. Gen Comp Endocrinol 2016; 230-231:26-8. [PMID: 26993343 DOI: 10.1016/j.ygcen.2016.03.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Accepted: 03/12/2016] [Indexed: 12/26/2022]
Abstract
Glucocorticoids act throughout life to regulate numerous physiological and behavioral processes. Their levels are therefore highly labile, reacting to varying conditions and stressors. Hence, measuring glucocorticoids (and other steroids) in wildlife is challenging, and devising methods that are unaffected by the stress of capture and handling should be explored. Here we use the tip of free-ranging chameleons' claws that were cut to allow individual identification, and report a steroids extraction and quantification method. Claw steroids present an integrated level representing the period of claw growth. We found that we could measure corticosterone in small amounts of chameleon claw matrix using commercial EIA kits. Using this method, we learned that in wild male chameleons, claw corticosterone levels were associated with body size. We suggest that claw-testing can potentially provide an ideal matrix for wildlife biomonitoring.
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Affiliation(s)
- Devorah Matas
- The Mina and Everard Goodman Faculty of Life Sciences, Bar Ilan University, Ramat Gan, Israel
| | | | - Lee Koren
- The Mina and Everard Goodman Faculty of Life Sciences, Bar Ilan University, Ramat Gan, Israel.
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Wozniak A, Napierala M, Golasik M, Herman M, Walas S, Piekoszewski W, Szyfter W, Szyfter K, Golusinski W, Baralkiewicz D, Florek E. Metal concentrations in hair of patients with various head and neck cancers as a diagnostic aid. Biometals 2015; 29:81-93. [PMID: 26660304 PMCID: PMC4735250 DOI: 10.1007/s10534-015-9899-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 11/28/2015] [Indexed: 12/31/2022]
Abstract
Head and neck cancers are one of the most frequent cancers worldwide. This paper attempts to evaluate disturbances of homeostasis of the necessary elements (calcium, magnesium, zinc, copper, iron, manganese) and changes in the levels of toxic metals (lead, cadmium, cobalt, chromium VI) in hair of patients with head and neck cancers, as well as people without a diagnosed neoplastic disease. In order to quantify the necessary elements and toxic metals, a method using ICP-MS and ICP-OES techniques had been developed and validated. The studies have shown that patients with head and neck cancer used to drink alcohol and smoked much more frequently than healthy individuals, both in the past and presently. Statistically significant differences in concentrations of average metal content in the group of patients with head and neck cancers compared to the control group were confirmed. Significant differences in metal content between the group of patients with head and neck cancers and healthy individuals were found which enabled distinguishing between the study groups. To this end, a more advanced statistical tool, i.e. chemometrics, was used. The conducted research analyses and the use of advanced statistical techniques confirm the benefits of using alternative material to distinguish the patients with head and neck cancers from the healthy individuals.
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Affiliation(s)
- Anna Wozniak
- Laboratory of Environmental Research, Department of Toxicology, Faculty of Pharmacy, Poznan University of Medical Sciences, 30 Dojazd Street, 60-631, Poznan, Poland
| | - Marta Napierala
- Laboratory of Environmental Research, Department of Toxicology, Faculty of Pharmacy, Poznan University of Medical Sciences, 30 Dojazd Street, 60-631, Poznan, Poland
| | - Magdalena Golasik
- Department of Analytical Chemistry, Faculty of Chemistry, Jagiellonian University, 3 Ingardena Street, 30-060, Krakow, Poland
| | - Małgorzata Herman
- Department of Analytical Chemistry, Faculty of Chemistry, Jagiellonian University, 3 Ingardena Street, 30-060, Krakow, Poland
| | - Stanisław Walas
- Department of Analytical Chemistry, Faculty of Chemistry, Jagiellonian University, 3 Ingardena Street, 30-060, Krakow, Poland
| | - Wojciech Piekoszewski
- Department of Analytical Chemistry, Faculty of Chemistry, Jagiellonian University, 3 Ingardena Street, 30-060, Krakow, Poland.,Laboratory of High Resolution Mass Spectrometry, Regional Laboratory of Physicochemical Analysis and Structural Research, Faculty of Chemistry, Jagiellonian University, 3 Ingardena Street, 30-060, Krakow, Poland
| | - Witold Szyfter
- Department of Otolaryngology and Laryngological Oncology, Poznan University of Medical Sciences, 49 Przybyszewskiego Street, 60-355, Poznan, Poland
| | - Krzysztof Szyfter
- Institute of Human Genetics, Polish Academy of Sciences, 32 Strzeszynska Street, 60-479, Poznan, Poland
| | - Wojciech Golusinski
- Department of Head and Neck Surgery, Greater Poland Cancer Centre, Poznan University of Medical Sciences, 15 Garbary Street, 61-866, Poznan, Poland
| | - Danuta Baralkiewicz
- Department of Trace Elements Analysis by Spectroscopic Method, Faculty of Chemistry, Adam Mickiewicz University, 89b Umultowska Street, 61-614, Poznan, Poland
| | - Ewa Florek
- Laboratory of Environmental Research, Department of Toxicology, Faculty of Pharmacy, Poznan University of Medical Sciences, 30 Dojazd Street, 60-631, Poznan, Poland.
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Trompier F, Romanyukha A, Swarts S, Reyes R, Gourier D. Influence of nails polish in EPR dosimetry with human nails. RADIAT MEAS 2015. [DOI: 10.1016/j.radmeas.2015.01.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Coelho P, Costa S, Costa C, Silva S, Walter A, Ranville J, Pastorinho MR, Harrington C, Taylor A, Dall'Armi V, Zoffoli R, Candeias C, da Silva EF, Bonassi S, Laffon B, Teixeira JP. Biomonitoring of several toxic metal(loid)s in different biological matrices from environmentally and occupationally exposed populations from Panasqueira mine area, Portugal. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2014; 36:255-69. [PMID: 23990171 DOI: 10.1007/s10653-013-9562-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2012] [Accepted: 07/17/2013] [Indexed: 05/21/2023]
Abstract
In the Panasqueira mine area of central Portugal, some environmental media show higher metal(loid) concentrations when compared with the local geochemical background and the values proposed in the literature for these environmental media. In order to evaluate the effect of the external contamination on selected indexes of internal dose, As, Cd, Cu, Cr, Fe, Hg, Mg, Mn, Mo, Ni, Pb, S, Se, Si, and Zn were quantified by inductively coupled plasma mass spectrometry and inductively coupled plasma optical emission spectrometry in blood, urine, hair and nail samples from individuals environmentally (N = 41) and occupationally exposed (N = 41). A matched control group (N = 40) was also studied, and data from the three groups were compared. Results obtained agreed with those reported by environmental studies performed in this area, pointing to populations living nearby and working in the mine being exposed to metal(loid)s originated from mining activities. Arsenic was the element with the highest increase in exposed populations. The concentration of other elements such as Cr, Mg, Mn, Mo, Ni, Pb, S, Se, and Zn was also increased, although at a lesser extent, specifically in the individuals environmentally exposed and in females. These findings confirm the need for competent authorities to act as soon as possible in this area and implement strategies aimed to protect exposed populations and the entire ecosystem.
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Affiliation(s)
- P Coelho
- Environmental Health Department, National Institute of Health, Porto, Portugal,
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Cooke GM. Biomonitoring of human fetal exposure to environmental chemicals in early pregnancy. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART B, CRITICAL REVIEWS 2014; 17:205-24. [PMID: 24828452 DOI: 10.1080/10937404.2014.898167] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The first trimester of human fetal life, a period of extremely rapid development of physiological systems, represents the most rapid growth phase in human life. Interference in the establishment of organ systems may result in abnormal development that may be manifest immediately or programmed for later abnormal function. Exposure to environmental chemicals may be affecting development at these early stages, and yet there is limited knowledge of the quantities and identities of the chemicals to which the fetus is exposed during early pregnancy. Clearly, opportunities for assessing fetal chemical exposure directly are extremely limited. Hence, this review describes indirect means of assessing fetal exposure in early pregnancy to chemicals that are considered disrupters of development. Consideration is given to such matrices as maternal hair, fingernails, urine, saliva, sweat, breast milk, amniotic fluid and blood, and fetal matrices such as cord blood, cord tissue, meconium, placenta, and fetal liver. More than 150 articles that presented data from chemical analysis of human maternal and fetal tissues and fluids were reviewed. Priority was given to articles where chemical analysis was conducted in more than one matrix. Where correlations between maternal and fetal matrices were determined, these articles were included and are highlighted, as these may provide the basis for future investigations of early fetal exposure. The determination of fetal chemical exposure, at the time of rapid human growth and development, will greatly assist regulatory agencies in risk assessments and establishment of advisories for risk management concerning environmental chemicals.
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Affiliation(s)
- Gerard M Cooke
- a Toxicology Research Division, Bureau of Chemical Safety, Food Directorate , Health Products and Food Branch, Health Canada, Sir Frederick G. Banting Research Centre , Tunney's Pasture, Ottawa , Ontario , Canada
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Ndilila W, Callan AC, McGregor LA, Kalin RM, Hinwood AL. Environmental and toenail metals concentrations in copper mining and non mining communities in Zambia. Int J Hyg Environ Health 2014; 217:62-9. [DOI: 10.1016/j.ijheh.2013.03.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Revised: 03/19/2013] [Accepted: 03/21/2013] [Indexed: 11/30/2022]
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Rusak DA, Zeleniak AE, Obuhosky JL, Holdren SM, Noldy CA. Quantitative determination of calcium, magnesium, and zinc in fingernails by laser-induced breakdown spectroscopy. Talanta 2013; 117:55-9. [DOI: 10.1016/j.talanta.2013.08.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Revised: 08/07/2013] [Accepted: 08/14/2013] [Indexed: 10/26/2022]
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Ghazali AR, Kamarulzaman F, Normah CD, Ahmad M, Ghazali SE, Ibrahim N, Said Z, Shahar S, Angkat N, Razali R. Levels of metallic elements and their potential relationships to cognitive function among elderly from Federal Land Development Authority (FELDA) settlement in Selangor Malaysia. Biol Trace Elem Res 2013; 153:16-21. [PMID: 23475372 DOI: 10.1007/s12011-013-9642-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2012] [Accepted: 02/28/2013] [Indexed: 11/30/2022]
Abstract
Exposure to toxic metals and excessive amount of trace elements is a risk factor of cognitive decline. Continuous monitoring of these elements by the use of metabolically inactive tissues such as fingernails may help in taking preventive measures to delay the cognitive decline process. In this study, the cognitive function of 54 elderlies (60-72 years old) from FELDA Sungai Tengi, Selangor, was evaluated using the Malay version of Mini-Mental State Examination (MMSE) and Montreal Cognitive Assessment (MoCA). The levels of arsenic (As), cadmium (Cd), copper (Cu), manganese (Mn), lead (Pb), and zinc (Zn) in fingernail were detected using Inductively Coupled Plasma-Mass Spectrometry. Results showed that (92.6 %) our population was cognitively impaired based on the MoCA with mean score of 18.07 ± 5.11. The mean level of elements in fingernails for As, Cd, Cu, Mn, Pb, and Zn were 16.68 ± 3.52, 4.26 ± 0.91, 4.81 ± 1.16, 1.00 ± 0.23, 1.83 ± 0.47, and 40.86 ± 10.81 μg/g, respectively. Significant inverse correlations were observed between MoCA with age (r = -0.543, p < 0.01), Cu level (r = -0.330, p < 0.05), and Mn level (r = -0.496, p < 0.01). MMSE was correlated to age (r = -0.346, p < 0.05) only. In conclusion, besides aging, the progression of cognitive decline among the elderly FELDA population was associated with increased levels of copper and manganese.
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Affiliation(s)
- Ahmad Rohi Ghazali
- Biomedical Science Programme, School of Diagnostic and Applied Health Sciences, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, 50300 Kuala Lumpur, Malaysia.
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Herman M, Przybylowicz A, Florek E, Piekoszewski W. Method of determination of low copper concentration in human hair and nails. JOURNAL OF ANALYTICAL CHEMISTRY 2013. [DOI: 10.1134/s1061934813040060] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Li J, Guo F, Wang Y, Zhang J, Zhong Y, Zhao Y, Wu Y. Can nail, hair and urine be used for biomonitoring of human exposure to perfluorooctane sulfonate and perfluorooctanoic acid? ENVIRONMENT INTERNATIONAL 2013; 53:47-52. [PMID: 23321147 DOI: 10.1016/j.envint.2012.12.002] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2012] [Revised: 12/02/2012] [Accepted: 12/03/2012] [Indexed: 06/01/2023]
Abstract
Because of the disadvantages of invasive sampling, it is desirable to explore non-invasive matrices for human biomonitoring of perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA). The aim of this study was to evaluate the application of nail, hair and urine for human biomonitoring of PFOS and PFOA. The concentrations of PFOS and PFOA in matched nail, hair, urine and serum samples collected from 64 donors were measured. The chemicals of interest were detected with high detection frequency in these matrices (90%-100%) except for PFOA in urine samples (56%). Generally, the gender influences on the levels of PFOS and PFOA in these non-invasive matrices were in agreement with that in serum. For PFOS, the coefficients of Spearman correlation between serum samples and nail, hair and urine samples were 0.786 (p<0.001), 0.545 (p<0.001) and 0.302 (p<0.05), respectively. For PFOA, the correlation was only observed between nail samples and serum samples with a correlation coefficient of 0.299 (p<0.05). The results suggested that nail has more potential than hair and urine to be applied in human biomonitoring for PFOS and PFOA in general populations.
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Affiliation(s)
- Jingguang Li
- Key Laboratory of Food Safety Risk Assessment, Ministry of Health and China National Center for Food Safety and Risk Assessment, Beijing 100021, China
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Yesil Y, Kuyumcu M, Ozturk Z, Ulger Z, Sahin U, Cankurtaran M, Halil M, Yavuz B, Vural H, Kara Y, Demirin H, Akyol O, Ariogul S. The relationship between metabolic bone diseases and fingernail calcium levels in the elderly. Eur Geriatr Med 2012. [DOI: 10.1016/j.eurger.2012.07.458] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Sriram K, Lin GX, Jefferson AM, Roberts JR, Andrews RN, Kashon ML, Antonini JM. Manganese accumulation in nail clippings as a biomarker of welding fume exposure and neurotoxicity. Toxicology 2012; 291:73-82. [DOI: 10.1016/j.tox.2011.10.021] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2011] [Revised: 10/20/2011] [Accepted: 10/31/2011] [Indexed: 11/15/2022]
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Carneiro MFH, Grotto D, Batista BL, Rhoden CR, Barbosa F. Background values for essential and toxic elements in children's nails and correlation with hair levels. Biol Trace Elem Res 2011; 144:339-50. [PMID: 21671087 DOI: 10.1007/s12011-011-9102-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2011] [Accepted: 05/25/2011] [Indexed: 10/18/2022]
Abstract
Human nails are an attractive matrix for assessing environmental exposures to toxic elements as well as the deficiency of essential elements since it is noninvasively collected and can be stored at room temperature. However, reference or baseline levels in nonexposed and healthy populations are not yet established. Then, the aims of this study were (a) to estimate background values for essential and toxic elements in nails from a healthy young population in southern Brazil and (b) to evaluate possible correlations between essential and toxic elements in nails. Furthermore, this report took part of a recent study of background values in the hair of a young population. Thus, correlations between chemical elements in nails and hair were also evaluated. Nails were collected from healthy children (n = 126), and element concentrations were determined by inductively coupled plasma mass spectrometry. This study provides new and reliable reference concentrations for toxic and essential elements in children's nails. The results can be used as reference values for epidemiological or clinical investigations based on trace elements in nails. Additionally, we also showed weak to strong correlations between Cu, Mg, Mn, Se, and Zn levels in nails and hair.
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Affiliation(s)
- Maria Fernanda Hornos Carneiro
- Laboratório de Toxicologia e Essencialidade de Metais, Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Avenida do Café s/n, Monte Alegre, 14040-903, Ribeirão Preto, São Paulo, Brazil
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Laohaudomchok W, Lin X, Herrick RF, Fang SC, Cavallari JM, Christiani DC, Weisskopf MG. Toenail, blood, and urine as biomarkers of manganese exposure. J Occup Environ Med 2011; 53:506-10. [PMID: 21494156 PMCID: PMC3092003 DOI: 10.1097/jom.0b013e31821854da] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE This study examined the correlation between manganese exposure and manganese concentrations in different biomarkers. METHODS Air measurement data and work histories were used to determine manganese exposure over a work shift and cumulative exposure. Toenail samples (n = 49), as well as blood and urine before (n = 27) and after (urine, n = 26; blood, n = 24) a work shift were collected. RESULTS Toenail manganese, adjusted for age and dietary manganese, was significantly correlated with cumulative exposure in 7 to 9, 10 to 12, and 7 to 12 months before toenail clipping date, but not 1 to 6 months. Manganese exposure over a work shift was not correlated with changes in blood nor urine manganese. CONCLUSIONS Toenails appeared to be a valid measure of cumulative manganese exposure 7 to 12 months earlier. Neither change in blood nor urine manganese appeared to be suitable indicators of exposure over a typical work shift.
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Affiliation(s)
- Wisanti Laohaudomchok
- Department of Environmental Health, Harvard School of Public Health, Boston, MA 02215, USA.
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Bunio A, Szygula R, Tubek S, Krasowski G. The content of elements in rainwater and its relation to the frequency of hospitalization for diabetes and obesity in Opole Voivodship, Poland, during 2000-2002. Biol Trace Elem Res 2010; 136:149-56. [PMID: 19802527 DOI: 10.1007/s12011-009-8531-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2009] [Accepted: 09/17/2009] [Indexed: 10/20/2022]
Abstract
Environmental factors significantly influence the incidence and course of metabolic syndrome diseases such as diabetes and obesity. The content of elements in rainwater is an indirect indicator of their presence in dust suspended in the air. In this paper we present the relationships between the content of selected elements in rainwater and hospitalization frequencies due to diabetes (E10-E13) and obesity (E66). It was assumed that the hospitalization frequency could be taken as a measure of deterioration of the metabolic process in the course of diabetes and its complications. The observations concerned the population of Opole Voivodeship, Poland (one million inhabitants), distributed in small communities of 44,000 to 151,000 inhabitants during the years 2000-2002. In cases of diabetes E10-E13 for all subjects relevant correlation indicators were found for chromium (r = 0.71), cadmium (r = 0.65), and lead (r = 0.66). Borderline relevance was seen for copper (r = 0.57) and zinc (r = 056). For diabetic men the statistically relevant correlations were chromium (r = 0.79), lead (r = 0.77), cadmium (r = 0.74), copper (r = 0.70), chloride (r = 0.69), zinc (r = 0.68), and iron (r = 0.64). For women the only relevant correlations were chromium (r = 0.62) and cadmium (r = 0.55). No significant correlations were found in obese individuals of both sexes.
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Affiliation(s)
- Andrzej Bunio
- Faculty of Physical Education and Physiotherapy, Institute of Technology, Opole, Poland
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Goullé JP, Saussereau E, Mahieu L, Bouige D, Guerbet M, Lacroix C. Le profil métallique : un nouveau concept médical. Rev Med Interne 2010; 31:128-34. [DOI: 10.1016/j.revmed.2009.03.360] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2009] [Revised: 03/02/2009] [Accepted: 03/02/2009] [Indexed: 11/16/2022]
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Esteban M, Castaño A. Non-invasive matrices in human biomonitoring: a review. ENVIRONMENT INTERNATIONAL 2009; 35:438-49. [PMID: 18951632 DOI: 10.1016/j.envint.2008.09.003] [Citation(s) in RCA: 337] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2008] [Revised: 07/11/2008] [Accepted: 09/11/2008] [Indexed: 05/18/2023]
Abstract
Humans and other living organisms are exposed to a variety of chemical pollutants that are released into the environment as a consequence of anthropogenic activities. Environmental pollutants are incorporated into the organism by different routes and can then be stored and distributed in different tissues, which leads to an internal concentration that can induce different alterations, adverse effects and/or diseases. Control measures should be taken to avoid these effects and human biomonitoring is a very useful tool that can contribute to this aim. Human biomonitoring uses different matrices to measure the target chemicals depending on the chemical, the amount of matrix necessary for the analysis and the detection limit (LOD) of the analytical technique. Blood is the ideal matrix for most chemicals due to its contact with the whole organism and its equilibrium with organs and tissues where chemicals are stored. However, it has an important disadvantage of being an invasive matrix. The development of new methodology and modern analytical techniques has allowed the use of other matrices that are less or non-invasive, such as saliva, urine, meconium, nails, hair, and semen or breast milk. The presence of a chemical in these matrices reflects an exposure, but correlations between levels in non-invasive matrices and blood must be established to ensure that these levels are related to the total body burden. The development of new biomarkers that are measurable in these matrices will improve non-invasive biomonitoring. This paper reviews studies that measure Cd, Pb, Hg, polychlorinated biphenyls (PCBs), polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), polycyclic aromatic hydrocarbons (PAHs), polybrominated diphenyl ethers (PBDEs), organochlorine pesticides and phthalates in non-invasive matrices, the most used techniques for measurements and what alternative techniques are available.
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Affiliation(s)
- Marta Esteban
- Environmental Toxicology, National Centre of Environmental Health (CNSA), Institute of Health Carlos III (ISCIII), Madrid, Spain
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Hussein Were F, Njue W, Murungi J, Wanjau R. Use of human nails as bio-indicators of heavy metals environmental exposure among school age children in Kenya. THE SCIENCE OF THE TOTAL ENVIRONMENT 2008; 393:376-84. [PMID: 18243277 DOI: 10.1016/j.scitotenv.2007.12.035] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2007] [Revised: 12/13/2007] [Accepted: 12/18/2007] [Indexed: 04/14/2023]
Abstract
Metal pollution and its health effects present a challenge currently facing the developing countries. Metal poisoning is usually difficult and expensive to assess or screen in these countries due to limited resources, which means that policies, guidelines, regulations and institutional managements are limited. Hair and nail as biopsy materials were suggested as more attractive biomarkers in assessing heavy metals environmental exposure. This paper deals with quantitative determination of lead (Pb), cadmium (Cd), calcium (Ca), zinc (Zn), and iron (Fe) in fingernails of children (n=200) in urban and rural areas using atomic absorption spectrometry. Factors that were suspected to influence the accumulation of Pb and Cd in children were obtained through a questionnaire. The mean levels of heavy metals in children in urban areas were found to be higher (27.5+/-1.8 microg/g Pb and 0.73+/-0.08 microg/g Cd) than in rural areas (19.7+/-0.9 microg/g Pb and 0.44+/-0.06 microg/g Cd). The difference was significant (P<0.05; DF=168, t-test). Other factors that were found to have significant influence were socio-economic background, health conditions, dietary habits and environmental risk exposure. The results also showed that the school location has more influence on the heavy metals level than the area of residence. The children in a school near the highway were found to have a mean of 34.4+/-3.5 microg/g Pb as compared to those who lived near the highway (31.6+/-2.8 microg/g Pb), however the difference was not significant (P>0.05), suggesting a common source of contaminants in the areas. The correlation results also indicated that a high level of Pb in the nail influenced negatively Zn and Fe but not Ca levels (R=-0.256 Zn; -0.188 Fe) while high levels of Cd had a negative relationship with Fe only (R=-0.241). The association of toxic metals in the nails of children with environmental exposure, and nutritional status implies that policies and actions to reduce heavy metal levels must be implemented and reinforced to address the health issues affecting children and by extension the general public in this country.
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Affiliation(s)
- Faridah Hussein Were
- Department of Chemistry in the School of Pure and Applied Sciences at Kenyatta University, Nairobi, Kenya
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The “One Source” cohort — evaluating the suitability of the human toenail as a manganese biomonitor. J Radioanal Nucl Chem 2007. [DOI: 10.1007/s10967-007-0407-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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