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Jurowski K. The toxicological assessment of hazardous elements (Pb, Cd and Hg) in low-cost jewelry for adults from Chinese E-commerce platforms: In situ analysis by portable X-ray fluorescence measurement. JOURNAL OF HAZARDOUS MATERIALS 2023; 460:132167. [PMID: 37619281 DOI: 10.1016/j.jhazmat.2023.132167] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 06/24/2023] [Accepted: 07/26/2023] [Indexed: 08/26/2023]
Abstract
This article focusses on the environmental implications of low-cost jewelry for adults from Chinese e-commerce platforms ((n = 8) with heavy metal impurities (Pb, Cd and Hg) and their potential impact on human health and the environment. The study highlights the advantages of using portable X-ray fluorescence (pXRF) analysis for rapid, non-destructive, and in situ analysis of heavy metals in jewelry. The results reveal that all products (n = 106) contained heavy metals at varying levels, Hg being the most commonly detected heavy metal. The fact that 71% of the samples exceeded the EU limit for Pb and 51% exceeded the EU limit for Cd is alarming and highlights the need for stricter regulations and monitoring of the jewelry industry to mitigate the risks posed by heavy metals in the environment. The study emphasizes the importance of using pXRF analysis to identify heavy metals in jewelry and address the literature gap in environmental risk assessments of Pb, Cd, and Hg in low-cost jewelry for adults from China. In general, the findings call for urgent action to ensure the safety of consumers and prevent environmental pollution by strengthening regulations and monitoring the jewelry industry.
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Affiliation(s)
- Kamil Jurowski
- Laboratory of Innovative Toxicological Research and Analyzes, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland; Department of Regulatory and Forensic Toxicology, Institute of Medical Expertises, ul. Aleksandrowska 67/93, 91-205 Łódź, Poland.
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2
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Zhao S, Yang J, Wang L, Dong B, Mao Y, Qu H, Zheng L. Selective detection of Pb 2+ ions based on a graphene field-effect transistor gated by DNAzymes in binding mode. Biosens Bioelectron 2023; 237:115549. [PMID: 37523810 DOI: 10.1016/j.bios.2023.115549] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 07/13/2023] [Accepted: 07/25/2023] [Indexed: 08/02/2023]
Abstract
Heavy metal contamination has become a severe threat to dairy products through contaminated feed and the environment water. Among them, Pb(II) is highly toxic to the human body even under minimal exposure. Therefore, establishing a fast and sensitive Pb2+ detection technology is significant for rapid screening of vast number of dairy products. Hererin, we report the development of a sensitive and selective Pb(II) biosensor based on a solution-gated graphene transistor (SGGT) with the gate modified by Pb2+-dependent DNAzyme probes. It has also been explored that the DNAzymes working in simple binding mode integrate better with the SGGT than those working in normal catalytic mode, showing significantly stronger channel current responses and lower detection limit down to 0.39 μg/L (or 1.9 nM). Finally, the biosensor was practicably applied to the detection of lead ions in pure milk samples with a high recovery rate. We believe that this work reveals the best strategy for integrating metal ion dependent DNAzyme probes with SGGT sensing platforms to selectively and sensitively detect many metal ions.
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Affiliation(s)
- Siyu Zhao
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Jing Yang
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Lu Wang
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, 230009, China; Intelligent Manufacturing Institute of HFUT, Hefei, 230009, China
| | - Baolei Dong
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Yu Mao
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Hao Qu
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, 230009, China; Engineering Research Center of Bioprocess, Ministry of Education, Hefei University of Technology, Hefei, 230009, China.
| | - Lei Zheng
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, 230009, China; Intelligent Interconnected Systems Laboratory of Anhui Province, Hefei University of Technology, Hefei, 230009, China
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3
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Cubello J, Peterson DR, Wang L, Mayer-Proschel M. Maternal Iron Deficiency and Environmental Lead (Pb) Exposure Alter the Predictive Value of Blood Pb Levels on Brain Pb Burden in the Offspring in a Dietary Mouse Model: An Important Consideration for Cumulative Risk in Development. Nutrients 2023; 15:4101. [PMID: 37836385 PMCID: PMC10574741 DOI: 10.3390/nu15194101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 09/18/2023] [Accepted: 09/20/2023] [Indexed: 10/15/2023] Open
Abstract
Maternal iron deficiency (ID) and environmental lead (Pb) exposure are co-occurring insults that both affect the neurodevelopment of offspring. Few studies have investigated how ID affects brain-region-specific Pb accumulations using human-relevant Pb concentrations. Furthermore, how these Pb exposures impact blood and brain Fe levels remains unclear. Importantly, we also wanted to determine whether the use of blood Pb levels as a surrogate for the brain Pb burden is affected by underlying iron status. We exposed virgin Swiss Webster female mice to one of six conditions differing by iron diet and Pb water concentration (0 ppm, 19 ppm, or 50 ppm lead acetate) and used Inductively Coupled Plasma Mass Spectrometry to measure the maternal and offspring circulating, stored, and brain Pb levels. We found that maternal ID rendered the offspring iron-deficient anemic and led to a region-specific depletion of brain Fe that was exacerbated by Pb in a dose-specific manner. The postnatal iron deficiency anemia also exacerbated cortical and hippocampal Pb accumulation. Interestingly, BPb levels only correlated with the brain Pb burden in ID pups but not in IN offspring. We conclude that ID significantly increases the brain Pb burden and that BPb levels alone are insufficient as a clinical surrogate to make extrapolations on the brain Pb burden.
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Affiliation(s)
- Janine Cubello
- Department of Environmental Medicine, University of Rochester, Rochester, NY 14642, USA;
| | - Derick R. Peterson
- Department of Biostatistics and Computational Biology, University of Rochester, Rochester, NY 14642, USA; (D.R.P.); (L.W.)
| | - Lu Wang
- Department of Biostatistics and Computational Biology, University of Rochester, Rochester, NY 14642, USA; (D.R.P.); (L.W.)
| | - Margot Mayer-Proschel
- Department of Biomedical Genetics, University of Rochester, Rochester, NY 14642, USA
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4
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Bah HAF, Martinez VO, dos Santos NR, Gomes Junior EA, Costa DO, Pires EM, Santana JVA, Cerqueira FDS, Menezes-Filho JA. Determinants of Exposure to Potentially Toxic Metals in Pregnant Women of the DSAN-12M Cohort in the Recôncavo Baiano, Brazil. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:2949. [PMID: 36833642 PMCID: PMC9959373 DOI: 10.3390/ijerph20042949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/04/2023] [Accepted: 02/05/2023] [Indexed: 06/18/2023]
Abstract
Exposure to potentially toxic metals (PTM) threatens maternal and child health. We investigated the determinants of exposure to lead (Pb), cadmium (Cd), arsenic (As), and manganese (Mn) in 163 pregnant women from the Recôncavo Baiano, Brazil, enrolled in the DSAN-12M cohort. We measured these metals in biological samples (blood, toenails, and hair) and the Pb dust loading rates (RtPb) at their homes by graphite furnace atomic absorption spectrophotometry (GFAAS). Questionnaires were applied to collect sociodemographic and general habits data. Only 2.91% (n = 4) of the pregnant women had As levels above the detection limit. Few participants had levels above the recommended reference values for blood Pb (5.1; 95% CI: 2.1-10.1%), and Mn in hair or toenails (4.3; 95% CI: 2.3-10.1%). On the other hand, 61.1 (95% CI: 52.4-69.3%) had elevated blood Cd levels. After binary logistic regression, low socioeconomic status, domestic waste burning, being a passive smoker, multiparity, and renovating the house significantly increased the chances of having high levels of Mn, Pb, and Cd. We detected a worrying situation related to exposure to Cd, showing the urgency of implementing human biomonitoring in the general population, especially in situations of social vulnerability.
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Affiliation(s)
- Homègnon A. Ferréol Bah
- Institute of Collective Health, Federal University of Bahia, Salvador 40110-040, Brazil
- Laboratory of Toxicology, College of Pharmacy, Federal University of Bahia, Salvador 40170-115, Brazil
| | - Victor O. Martinez
- Graduate Program in Pharmacy, College of Pharmacy, Federal University of Bahia, Salvador 40170-115, Brazil
| | - Nathália R. dos Santos
- Laboratory of Toxicology, College of Pharmacy, Federal University of Bahia, Salvador 40170-115, Brazil
- Graduate Program in Pharmacy, College of Pharmacy, Federal University of Bahia, Salvador 40170-115, Brazil
| | - Erival A. Gomes Junior
- Graduate Program in Food Science, College of Pharmacy, Federal University of Bahia, Salvador 40170-115, Brazil
| | - Daisy O. Costa
- Laboratory of Toxicology, College of Pharmacy, Federal University of Bahia, Salvador 40170-115, Brazil
- Graduate Program in Pharmacy, College of Pharmacy, Federal University of Bahia, Salvador 40170-115, Brazil
| | - Elis Macêdo Pires
- Laboratory of Toxicology, College of Pharmacy, Federal University of Bahia, Salvador 40170-115, Brazil
| | - João V. Araújo Santana
- Laboratory of Toxicology, College of Pharmacy, Federal University of Bahia, Salvador 40170-115, Brazil
| | - Filipe da Silva Cerqueira
- Laboratory of Toxicology, College of Pharmacy, Federal University of Bahia, Salvador 40170-115, Brazil
| | - José A. Menezes-Filho
- Institute of Collective Health, Federal University of Bahia, Salvador 40110-040, Brazil
- Laboratory of Toxicology, College of Pharmacy, Federal University of Bahia, Salvador 40170-115, Brazil
- Graduate Program in Pharmacy, College of Pharmacy, Federal University of Bahia, Salvador 40170-115, Brazil
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5
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Sidwell A, Smith SC, Roper C. A comparison of fine particulate matter (PM 2.5) in vivo exposure studies incorporating chemical analysis. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART B, CRITICAL REVIEWS 2022; 25:422-444. [PMID: 36351256 DOI: 10.1080/10937404.2022.2142345] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The complex, variable mixtures present in fine particulate matter (PM2.5) have been well established, and associations between chemical constituents and human health are expanding. In the past decade, there has been an increase in PM2.5 toxicology studies that include chemical analysis of samples. This investigation is a crucial component for identifying the causal constituents for observed adverse health effects following exposure to PM2.5. In this review, investigations of PM2.5 that used both in vivo models were explored and chemical analysis with a focus on respiratory, cardiovascular, central nervous system, reproductive, and developmental toxicity was examined to determine if chemical constituents were considered in the interpretation of the toxicity findings. Comparisons between model systems, PM2.5 characteristics, endpoints, and results were made. A vast majority of studies observed adverse effects in vivo following exposure to PM2.5. While limited, investigations that explored connections between chemical components and measured endpoints noted significant associations between biological measurements and a variety of PM2.5 constituents including elements, ions, and organic/elemental carbon, indicating the need for such analysis. Current limitations in available data, including relatively scarce statistical comparisons between collected toxicity and chemical datasets, are provided. Future progress in this field in combination with epidemiologic research examining chemical composition may support regulatory standards of PM2.5 to protect human health.
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Affiliation(s)
- Allie Sidwell
- Department of Biology, University of Mississippi, Mississippi, MS, USA
| | - Samuel Cole Smith
- Department of Bio-Molecular Sciences, University of Mississippi, Mississippi, MS, USA
| | - Courtney Roper
- Department of Bio-Molecular Sciences, University of Mississippi, Mississippi, MS, USA
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6
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Bastien K, Muckle G, Ayotte P, Courtemanche Y, Dodge NC, Jacobson JL, Jacobson SW, Saint-Amour D. Associations between developmental exposure to environmental contaminants and spatial navigation in late adolescence. New Dir Child Adolesc Dev 2022; 2022:11-35. [PMID: 36044011 PMCID: PMC9590243 DOI: 10.1002/cad.20478] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Inuit communities in Northern Quebec (Canada) are exposed to environmental contaminants, particularly to mercury, lead and polychlorinated biphenyls (PCBs). Previous studies reported adverse associations between these neurotoxicants and memory performance. Here we aimed to determine the associations of pre- and postnatal exposures to mercury, lead and PCB-153 on spatial navigation memory in 212 Inuit adolescents (mean age = 18.5 years) using a computer task which requires learning the location of a hidden platform based on allocentric spatial representation. Contaminant concentrations were measured in cord blood at birth and blood samples at 11 years of age and at time of testing. Multivariate regression models showed that adolescent mercury and prenatal PCB-153 exposures were associated with poorer spatial learning, whereas current exposure to PCB-153 was associated with altered spatial memory retrieval at the probe test trial. These findings suggest that contaminants might be linked to different aspects of spatial navigation processing at different stages.
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Affiliation(s)
- Kevin Bastien
- Département de Psychologie, Université du Québec à Montréal, Montréal, Québec, Canada
| | - Gina Muckle
- École de Psychologie, Université Laval, Québec, Québec, Canada
- Centre de Recherche du CHU de Québec, Université Laval, Québec, Québec, Canada
| | - Pierre Ayotte
- Département de Médecine Sociale et Préventive, Université Laval, Québec, Québec, Canada
| | - Yohann Courtemanche
- Centre de Recherche du CHU de Québec, Université Laval, Québec, Québec, Canada
| | - Neil C Dodge
- Department of Psychiatry and Behavioral Neuroscience, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Joseph L Jacobson
- Department of Psychiatry and Behavioral Neuroscience, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Sandra W Jacobson
- Department of Psychiatry and Behavioral Neuroscience, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Dave Saint-Amour
- Département de Psychologie, Université du Québec à Montréal, Montréal, Québec, Canada
- Centre de Recherche, Centre hospitalier universitaire Sainte-Justine, Montréal, Québec, Canada
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7
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Abd Wahil MS, Ja’afar MH, Md Isa Z. Assessment of Urinary Lead (Pb) and Essential Trace Elements in Autism Spectrum Disorder: a Case-Control Study Among Preschool Children in Malaysia. Biol Trace Elem Res 2022; 200:97-121. [PMID: 33661472 PMCID: PMC7930527 DOI: 10.1007/s12011-021-02654-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 02/22/2021] [Indexed: 12/27/2022]
Abstract
Lead (Pb) is a heavy metal which is abundant in the environment and known to cause neurotoxicity in children even at minute concentration. However, the trace elements calcium (Ca), magnesium (Mg), zinc (Zn) and iron (Fe) are essential to children due to its protective effect on neurodevelopment. The primary objective of this study was to assess the role of Pb and trace elements in the development of autism spectrum disorder (ASD) among preschool children. A total of 81 ASD children and 74 typically developed (TD) children aged between 3 and 6 years participated in the study. Self-administered online questionnaires were completed by the parents. A first-morning urine sample was collected in a sterile polyethene urine container and assayed for Pb, Ca, Mg, Zn and Fe using an inductively coupled plasma mass spectrometry (ICP-MS). Comparisons between groups revealed that the urinary Pb, Mg, Zn and Fe levels in ASD children were significantly lower than TD children. The odds of ASD reduced significantly by 5.0% and 23.0% with an increment of every 1.0 μg/dL urinary Zn and Fe, respectively. Post interaction analysis showed that the odds of ASD reduced significantly by 11.0% and 0.1% with an increment of every 1.0 μg/dL urinary Zn and Pb, respectively. A significantly lower urinary Pb level in ASD children than TD children may be due to their poor detoxifying mechanism. Also, the significantly lower urinary Zn and Fe levels in ASD children may augment the neurotoxic effect of Pb.
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Affiliation(s)
- Mohd Shahrol Abd Wahil
- Department of Community Health, Faculty of Medicine, National University of Malaysia, Kuala Lumpur, Malaysia
| | - Mohd Hasni Ja’afar
- Department of Community Health, Faculty of Medicine, National University of Malaysia, Kuala Lumpur, Malaysia
| | - Zaleha Md Isa
- Department of Community Health, Faculty of Medicine, National University of Malaysia, Kuala Lumpur, Malaysia
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8
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da Costa MCV, Kmecick M, Freitas PFD, Ortolani-Machado CF. Lead exposure affects cephalic morphogenesis and neural crest cells in Gallus gallus embryo. Neurotoxicol Teratol 2021; 84:106948. [PMID: 33418068 DOI: 10.1016/j.ntt.2021.106948] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 12/09/2020] [Accepted: 01/02/2021] [Indexed: 01/02/2023]
Abstract
The morphogenesis of the head of vertebrates is a process that involves rapid growth and dynamic movements of various cell populations, including the neural crest cells (NCC). These pluripotent cells generated during neurulation have high proliferative and migratory capacity but xenobiotic agents can affect these migratory periods and cause congenital malformations. Lead (Pb) is the most common toxic metal in the environment and a potent teratogen that can affect growth and induce malformations. Despite the known toxic effects of Pb, there is a gap in knowledge about the impact of realistic concentrations of Pb at critical periods of early development. Here, we evaluated mortality, embryonic morphology, NCC migration, and the amount of Pb deposition in chicken embryos after 3 to 4 days of exposure. One of the most interesting observations in this study is that only about 34% of the injected Pb was present in the embryos after 4 days. We observed that exposure to Pb, even under low concentrations, increased mortality and the occurrence of malformations during embryonic development, especially in the cephalic region (CR). Although Pb was found widely distributed in the CR, no relation between its presence and the migration routes of cephalic NCC was observed. But the number of NCC and their migratory distance were reduced. These changes are consistent and explain the morphological anomalies described in this study, which also correlates with the morphofunctional abnormalities reported in the literature. Therefore, this study highlights the concern of exposure to low concentrations of this metal.
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Affiliation(s)
| | - Melyssa Kmecick
- Laboratory of Embryotoxicology, Department of Cell Biology, Federal University of Paraná, Curitiba, PR, Brazil
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9
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Dzwilewski KLC, Merced-Nieves FM, Aguiar A, Korrick SA, Schantz SL. Characterization of performance on an automated visual recognition memory task in 7.5-month-old infants. Neurotoxicol Teratol 2020; 81:106904. [PMID: 32485220 DOI: 10.1016/j.ntt.2020.106904] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 05/25/2020] [Accepted: 05/28/2020] [Indexed: 12/11/2022]
Abstract
Infant looking behaviors measured during visual assessment paradigms may be more reliable predictors of long-term cognitive outcomes than standard measures such as the Bayley Scales of Infant Development typically used in environmental epidemiology. Infrared eye tracking technology offers an innovative approach to automate collection and processing of looking behavior data, making it possible to efficiently assess large numbers of infants. The goals of this study were to characterize infant looking behavior measures including side preference, fixation duration, and novelty preference using eye tracking and an automated version of an established visual recognition memory paradigm that includes both human faces and geometric figures as stimuli. An ancillary goal was to assess the feasibility of obtaining a precise measure of looking to the eye region of faces from the eye-tracking data. In this study, 309 7.5-month-old infants from a prospective birth cohort were assessed using a visual recognition memory (VRM) paradigm. Infrared eye tracking was used to record looking time as infants were shown nine blocks of trials with a pair of identical faces or shapes followed by two trials in which the familiar stimulus was paired with a novel one. Infants were assessed in one of four conditions: in conditions A and B, stimulus set 1 were the familiar stimuli and set 2 were novel; in conditions C and D, set 2 were familiar and set 1 novel. The novel stimuli were presented on the right first in conditions A and C and on the left first in conditions B and D. We observed a significant right side preference, which has not been reported before (57% of looking time spent looking at right side stimulus, p-value < 0.0001). Infants showed a preference for the novel stimuli similar to that published in prior studies (57-60% of looking time spent looking at the novel stimulus, p-value < 0.0001), as well as average fixation durations similar to previous studies. Infants also showed a strong preference for the eyes versus the rest of the face (p-value < 0.0001). Novelty preference was significantly higher when set 2 stimuli were novel (p-value < 0.0001), suggesting a preference among infants for set 2 stimuli compared to set 1 stimuli. The pattern of novelty preference across trials was significantly different between infants who saw the novel stimuli on the left first and those who saw them on the right first (p-value < 0.0001) but the overall mean novelty preference was not significantly different between these groups. There were also significant differences in average fixation duration and eyes preference measures across stimuli (p-values < 0.05). These findings show that VRM assessment can be automated for use in large-scale epidemiological studies using infrared eye tracking with looking behavior measure results similar to those obtained with standard non-automated methods, and that side and stimulus preferences are important modifiers of looking behavior that are critical to consider in this type of assessment.
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Affiliation(s)
- Kelsey L C Dzwilewski
- Neuroscience Program, University of Illinois at Urbana-Champaign, 405 N. Mathews Ave., Urbana, IL 61801, United States of America; Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N. Mathews Ave., Urbana, IL 61801, United States of America.
| | - Francheska M Merced-Nieves
- Neuroscience Program, University of Illinois at Urbana-Champaign, 405 N. Mathews Ave., Urbana, IL 61801, United States of America; Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N. Mathews Ave., Urbana, IL 61801, United States of America.
| | - Andrea Aguiar
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N. Mathews Ave., Urbana, IL 61801, United States of America; Department of Comparative Biosciences, University of Illinois at Urbana-Champaign, 3505 Veterinary Medicine Basic Sciences Building, 2001 S. Lincoln Ave., Urbana, IL 61802, United States of America.
| | - Susan A Korrick
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, 75 Francis St., Boston, MA 02115, United States of America; Department of Environmental Health, Harvard T.H. Chan School of Public Health, 677 Huntington Ave., Boston, MA 02115, United States of America.
| | - Susan L Schantz
- Neuroscience Program, University of Illinois at Urbana-Champaign, 405 N. Mathews Ave., Urbana, IL 61801, United States of America; Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N. Mathews Ave., Urbana, IL 61801, United States of America; Department of Comparative Biosciences, University of Illinois at Urbana-Champaign, 3505 Veterinary Medicine Basic Sciences Building, 2001 S. Lincoln Ave., Urbana, IL 61802, United States of America.
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10
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Zajac L, Kobrosly RW, Ericson B, Caravanos J, Landrigan PJ, Riederer AM. Probabilistic estimates of prenatal lead exposure at 195 toxic hotspots in low- and middle-income countries. ENVIRONMENTAL RESEARCH 2020; 183:109251. [PMID: 32311907 PMCID: PMC7176741 DOI: 10.1016/j.envres.2020.109251] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 01/10/2020] [Accepted: 02/11/2020] [Indexed: 05/08/2023]
Abstract
BACKGROUND Prior estimates of pediatric lead-related disease burden in low- and middle-income countries (LMICs) used population estimates of maternal blood lead levels (BLLs). This approach may underestimate fetal BLLs by not considering potentially high prenatal lead exposure from toxic hotspots. OBJECTIVES: We developed a probabilistic approach to using the Adult Lead Methodology (ALM) to estimate fetal BLLs from prenatal exposure to lead-contaminated soil at hotspots in the Toxic Site Identification Program (TSIP). METHODS We created distributions for each ALM parameter using published literature and extracted soil lead measurements from the TSIP database. Each iteration of the probabilistic ALM randomly selected values from the input distributions to generate a site-specific fetal BLL estimate. For each site, we ran 5000 model iterations, producing a site-specific fetal BLL distribution. RESULTS 195 TSIP sites, in 33 LMICs, met our study inclusion criteria; an estimated 820,000 women of childbearing age are at risk for lead exposure at these sites. The predicted geometric means (GM) for site-specific fetal BLLs ranged from 3.3 μg/dL to 534 μg/dL, and 98% of sites had estimated GM fetal BLLs >5 μg/dL, the current reference level of the United States Centers for Disease Control and Prevention (CDC), while 11 sites had estimated GM fetal BLLs above the CDC chelation threshold of 45 μg/dL. DISCUSSION The TSIP soil lead data and this probabilistic approach to the ALM show that pregnant women living near TSIP sites may have BLLs that put their fetus at risk for neurologic damage and other sequelae, underscoring the need for interventions to reduce lead exposure at toxic hotspots.
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Affiliation(s)
- Lauren Zajac
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, Box 1057, New York, NY, 10029, USA.
| | - Roni W Kobrosly
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, Box 1057, New York, NY, 10029, USA
| | - Bret Ericson
- Pure Earth, 475 Riverside Drive, Suite 860, New York, NY, 10115, USA; Department of Environmental Sciences, Faculty of Science and Engineering, Macquarie University, North Ryde, Sydney, NSW, 2109, Australia
| | - Jack Caravanos
- College of Global Public Health, New York University, 665 Broadway, New York, NY, 10012, USA
| | - Philip J Landrigan
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, Box 1057, New York, NY, 10029, USA
| | - Anne M Riederer
- Pure Earth, 475 Riverside Drive, Suite 860, New York, NY, 10115, USA; Department of Environmental and Occupational Health, Milken Institute School of Public Health, George Washington University, 950 New Hampshire Avenue NW, Washington, DC, 20052, USA; Department of Environmental and Occupational Health Sciences, School of Public Health, University of Washington, 1959 NE Pacific Street, Seattle, WA, 98195, USA
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11
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Li YK, Yang T, Chen ML, Wang JH. Recent Advances in Nanomaterials for Analysis of Trace Heavy Metals. Crit Rev Anal Chem 2020; 51:353-372. [PMID: 32182101 DOI: 10.1080/10408347.2020.1736505] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In an effort to achieve high sensitivity analysis methods for ultra-trace levels of heavy metals, numerous new nanomaterials are explored for the application in preconcentration processes and sensing systems. Nanomaterial-based methods have proven to be effective for selective analysis and speciation of heavy metals in combination with spectrometric techniques. This review outlined the different types of nanomaterials applied in the field of heavy metal analysis, and concentrated on the latest developments in various new materials. In particular, the functionalization of traditional materials and the exploitation of bio-functional materials could increase the specificity to target metals. The hybridization of multiple materials could improve material properties, to build novel sensor system or achieve detection-removal integration. Finally, we discussed the future perspectives of nanomaterials in the heavy metal preconcentration and sensor design, as well as their respective advantages and challenges. Despite impressive progress and widespread attention, the development of new nanomaterials and nanotechnology is still hampered by numerous challenges, particularly in the specificity to the target and the anti-interference performance in complex matrices.
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Affiliation(s)
- Yi-Kun Li
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang, China
| | - Ting Yang
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang, China
| | - Ming-Li Chen
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang, China.,Analytical and Testing Center, Northeastern University, Shenyang, China
| | - Jian-Hua Wang
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang, China
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Horton MK, Zheng L, Williams A, Doucette JT, Svensson K, Cory-Slechta D, Tamayo-Ortiz M, Torres-Calapiz M, Bellinger D, Schnaas L, Téllez Rojo MMM, Wright R. Using the delayed spatial alternation task to assess environmentally associated changes in working memory in very young children. Neurotoxicology 2020; 77:71-79. [PMID: 31857145 PMCID: PMC10129050 DOI: 10.1016/j.neuro.2019.12.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 12/11/2019] [Accepted: 12/13/2019] [Indexed: 01/25/2023]
Abstract
BACKGROUND Working memory (WM) is critical for problem solving and reasoning. Beginning in infancy, children show WM capacity increasing with age but there are few validated tests of WM in very young children. Because rapid brain development may increase susceptibility to adverse impacts of prenatal neurotoxicant exposure, such as lead, tests of WM in very young children would help to delineate onset of developmental problems and windows of susceptibility. PURPOSE Our objective was to assess the feasibility of administering a Delayed Spatial Alternation Task (DSAT) to measure WM among 18- and 24-month old children enrolled in an ongoing longitudinal birth cohort study and compare DSAT performance with age and general cognitive development. We further explored whether prenatal lead exposure impacted DSAT performance. METHODS We assessed 457 mother-child pairs participating in the Programming Research in Obesity, GRowth, Environment and Social Stressors (PROGRESS) Study in Mexico City. The DSAT and Bayley Scales of Infant Development (BSID-III) were administered at 18- and 24-months. Lead was measured in maternal blood collected during pregnancy (MBPb) and in a subsample of children at 24-months (CBPb). We regressed DSAT measures on MBPb and CBPb, child sex, and maternal age, education, socioeconomic status, and household smoking. We compared DSAT performance to BSID-III performance with adjusted residuals. RESULTS 24-month children perform better on the DSAT than 18-month children; 24-month subjects reached a higher level on the DSAT (3.3 (0.86) vs. 2.4 (0.97), p < 0.01), and had a higher number of correct responses (20.3 vs. 17.2, p < 0.01). In all DSAT parameters, females performed better than males. Maternal education predicted better DSAT performance; household smoking predicted worse DSAT performance. A higher number of correct responses was associated with higher BSID-III Cognitive scales at 18 months (r = 0.20, p < 0.01) and 24 months (r = 0.27, p < 0.01). MBPb and CPBb did not significantly predict DSAT performance. CONCLUSION Improved performance on the DSAT with increasing age, the positive correlation with the BSID-III cognitive and language scales and the correlation with common sociodemographic predictors of neurodevelopment demonstrate the validity of the DSAT as a test of infant development.
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Affiliation(s)
- Megan K Horton
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, United States.
| | - Laura Zheng
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Ashley Williams
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - John T Doucette
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | | | - Deborah Cory-Slechta
- Department of Environmental Medicine, University of Rochester Medical Center, School of Medicine and Dentistry, Rochester, NY, United States
| | - Marcela Tamayo-Ortiz
- Instituto Nacional de Salud Pública, Cuernavaca, Mexico; National Council of Science and Technology, CONTACY, Mexico City, Mexico
| | | | - David Bellinger
- Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA, United States
| | - Lourdes Schnaas
- Division of Research in Community Interventions, Instituto Nacional de Perinatología, Mexico City, Mexico
| | | | - Robert Wright
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, United States
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Gagnon-Chauvin A, Bastien K, Saint-Amour D. Environmental toxic agents: The impact of heavy metals and organochlorides on brain development. HANDBOOK OF CLINICAL NEUROLOGY 2020; 173:423-442. [PMID: 32958188 DOI: 10.1016/b978-0-444-64150-2.00030-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Exposure to environmental toxicants can have deleterious effects on the development of physical, cognitive, and mental health. Extensive laboratory and clinical studies have demonstrated how the developing brain is uniquely sensitive to toxic agents. This chapter focuses on the main neurologic impairments linked to prenatal and postnatal exposure to lead, methylmercury, and polychlorinated biphenyls, three legacy environmental contaminants whose neurotoxic effects have been extensively studied with respect to cognitive and behavioral development. The main cognitive, emotion regulation, sensory, and motor impairments in association with these contaminants are briefly reviewed, including the underlying neural mechanisms such as neuropathologic damages, brain neurotransmission, and endocrine system alterations. The use of neuroimaging as a novel tool to better understand how the brain is affected by exposure to environmental contaminants is also discussed.
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Affiliation(s)
- Avril Gagnon-Chauvin
- Department of Psychology, Université du Québec à Montréal, Montréal, QC, Canada; Research Centre, Centre Hospitalier Universitaire Sainte-Justine, Université de Montréal, Montréal, QC, Canada
| | - Kevin Bastien
- Department of Psychology, Université du Québec à Montréal, Montréal, QC, Canada; Research Centre, Centre Hospitalier Universitaire Sainte-Justine, Université de Montréal, Montréal, QC, Canada
| | - Dave Saint-Amour
- Department of Psychology, Université du Québec à Montréal, Montréal, QC, Canada; Research Centre, Centre Hospitalier Universitaire Sainte-Justine, Université de Montréal, Montréal, QC, Canada.
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Episodic Prenatal Exposure To Ethanol Affects Postnatal Neurogenesis In The Macaque Dentate Gyrus And Visual Recognition Memory. Int J Dev Neurosci 2019; 79:65-75. [PMID: 31706015 DOI: 10.1016/j.ijdevneu.2019.10.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 08/28/2019] [Accepted: 10/11/2019] [Indexed: 11/23/2022] Open
Abstract
Fetal alcohol syndrome (FAS) is a prime cause of cognitive dysfunction. The present study tested the hypotheses (a) that gestational ethanol exposure results in deficits in hippocampal-related behaviors and associated neurogenesis and (b) that the period of gastrulation is a time of vulnerability. Pregnant macaques were intubated with ethanol or saline once per week for 3, 6, or 24 weeks. Exposures included or omitted the period of gastrulation. Offspring were given behavioral tests including a Visual-Paired Comparison (VPC), a hippocampal-associated memory task, and euthanized as adolescents. Their dentate gyri were processed for immunohistochemical identification of cells passing through the cell cycle (Ki-67 and proliferating cell nuclear antigen), exiting the cell cycle (p21), or passing through early stages of neuronal morphogenesis (Tuj1). Performance in neurobehavioral tasks was unaffected by ethanol exposure, the notable exception being performance in the VPC that was poorer for macaques exposed to ethanol including gastrulation. Anatomical studies show that the expression of Ki-67 was greater and ratio of p21-positive cells to the ratio of Ki-67-expressing cells was lower in animals in which the ethanol exposure included gastrulation. On the other hand, no ethanol-induced differences in TuJ1 expression were detected. Thus, the dentate gyrus is a bellwether of long-term consequences of gestational ethanol exposure. Targeted effects of ethanol on early neural generation (cell cycle and cycle exit) correlate with the timing-dependent degradation in VPC performance and exposure during gastrulation results in notable deficits. These changes evidence a pattern of fetal programming underlying FAS.
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Chen H, Shao S, Yu Y, Huang Y, Zhu X, Zhang S, Fan J, Yin GY, Chi B, Wan M, Mao C. A dual-responsive biosensor for blood lead detection. Anal Chim Acta 2019; 1093:131-141. [PMID: 31735206 DOI: 10.1016/j.aca.2019.09.062] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 09/23/2019] [Indexed: 12/17/2022]
Abstract
Simple and accurate detection of trace heavy metals in blood is very important. A novel dual-responsive electrochemical/fluorescent biosensor based on magnetic hyperbranched polyamide with heparin modification (MHPAM-H) for blood lead detection has been successfully developed. Upon conjugated with blood lead ions, dual-biosensor could not only display electrochemical signal but also fluorescence signal owing to the enriched amino groups, cavity structure, and good fluorescence properties of HPAM. Blood biocompatibility, construction of the dual-responsive biosensor, electrochemical/fluorescent detection of lead ions in water phase and blood condition, selectivity and stability of the dual-responsive biosensor were investigated in detail. The proposed dual-responsive biosensor displays good linear relationship (1.5 pM- 4.8 × 103 pM for electrochemical detection and 0.5 pM-4.8 × 103 pM for fluorescent detection) with low detection limit (4.4 pM for electrochemical detection and 1.0 pM for fluorescent detection) for blood lead, providing potential application for blood lead detection in the future.
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Affiliation(s)
- Huan Chen
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China
| | - Shuibin Shao
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China
| | - Yueqi Yu
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China
| | - Yangyang Huang
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China
| | - Xiaotan Zhu
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China
| | - Shiyan Zhang
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China
| | - Jin Fan
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 211166, China
| | - Guo Yong Yin
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 211166, China
| | - Bo Chi
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816, China
| | - Mimi Wan
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China.
| | - Chun Mao
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China.
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Bora BK, Ramos-Crawford AL, Sikorskii A, Boivin MJ, Lez DM, Mumba-Ngoyi D, Mukalay Wa Mukalay A, Okitundu-Luwa D, Tshala-Katumbay D. Concurrent exposure to heavy metals and cognition in school-age children in Congo-Kinshasa: A complex overdue research agenda. Brain Res Bull 2018; 145:81-86. [PMID: 29944947 DOI: 10.1016/j.brainresbull.2018.06.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 06/20/2018] [Accepted: 06/21/2018] [Indexed: 12/17/2022]
Abstract
The impact of concurrent exposure to neurotoxic metals is a significant threat to brain function, mostly in contexts of multiple exposures as seen in the developing world. Ninety-five children (46 boys and 49 girls, 6 to 11-year old) from Congo-Kinshasa were assessed for cognition using the Kaufman Assessment Battery for Children (2nd edition) and exposure to Cr, Cu, Zn, Co, Mn, As, Cd, Se, Hg, Fe, and Pb by inductively coupled plasma mass spectrometry (ICPMS) in serum and urine collections. Concentrations of elements were all above normal ranges except for Cd, Se and Hg. General linear mixed effects models were used to predict neurocognitive outcomes with variable selection methods including backward elimination, elastic net, or subsets identified based on subject matter expertise. After adjusting for sex, age, and SES, urinary Co > 5 μg/l was associated with poor simultaneous processing (memory) (p = 0.0237). Higher excretion but normal concentration of Cd in serum was associated with better memory (p = 0.03), planning (p = 0.05), and overall performance scores (p < 0.01); thus appeared to be neuroprotective. However, higher excretion of Zn had negative influence on the overall performance scores (p = 0.02). Predictive neurotoxicology is a challenging task in contexts of multiple and concurrent exposures. Urinary Co > 5 μg/l is a risk factor for poor neurodevelopmental outcomes in such contexts. The impact of heavy metals on cognition is dependent on concentrations of and interactions between toxic and essential elements.
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Affiliation(s)
- Béatrice Koba Bora
- Department of Neurology, School of Medicine, University of Lubumbashi, Lubumbashi, Democratic Republic of Congo
| | - Ana Luiza Ramos-Crawford
- Department of Neurology and School of Public Health, Oregon Health & Science University, Portland OR, USA
| | - Alla Sikorskii
- Department of Statistics and Probability, Michigan State University, East Lansing, MI, USA
| | - Michael Joseph Boivin
- Departments of Psychiatry and Neurology & Ophthalmology, Michigan State University, East Lansing MI, USA; Department of Psychiatry, University of Michigan, Ann Arbor, MI, USA
| | - Didier Malamba Lez
- Department of Internal Medicine, School of Medicine, University of Lubumbashi, Lubumbashi, Democratic Republic of Congo
| | - Dieudonné Mumba-Ngoyi
- Department of Tropical Medicine, University of Kinshasa, Kinshasa, Democratic Republic of Congo; National Institute of Biomedical Research (INRB), Kinshasa, Democratic Republic of Congo
| | | | - Daniel Okitundu-Luwa
- Department of Neurology, University of Kinshasa, Kinshasa, Democratic Republic of Congo
| | - Desiré Tshala-Katumbay
- Department of Neurology and School of Public Health, Oregon Health & Science University, Portland OR, USA; Department of Neurology, University of Kinshasa, Kinshasa, Democratic Republic of Congo; National Institute of Biomedical Research (INRB), Kinshasa, Democratic Republic of Congo.
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Yan J, Gao Z, Wang J, Ma W, Ying X, Zhou C, Yan C. Family environmental and dietary implications for low-level prenatal lead exposure in Wujiang City, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:12780-12787. [PMID: 29473138 DOI: 10.1007/s11356-017-1102-z] [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: 06/12/2017] [Accepted: 12/19/2017] [Indexed: 06/08/2023]
Abstract
To explore the potential environmental and dietary factors during pregnancy affecting low-level prenatal lead exposure, we conducted a longitudinal study in Wujiang City, China. A total of 1976 mother-infant pairs were included from 2009 to 2010. An interviewed questionnaire was conducted and cord blood samples were collected. The geometric means of cord blood lead level was 30.3 μg/L (95% CI, 29.8-30.8) with 99.24% below 100 μg/L. Maternal age, passive smoking, and living in the countryside were significantly associated with cord blood lead concentrations. Multiple logistic models showed that some family environmental factors including using firewood and electricity as kitchen fuel were positively correlated with increased cord blood lead levels. Among dietary sources recorded in this study, meat consumption (> 3 times/week), fish consumption (1-3 times/week), vegetables consumption (> 1 times/day), and fruit intake (> 1 times/day) had inverse relationship with cord blood lead levels. In general, our findings may have important implications for family environmental and dietary direction during pregnancy to decrease prenatal lead exposure.
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Affiliation(s)
- Jin Yan
- MOE-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Zhenyan Gao
- MOE-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Ju Wang
- MOE-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Wenjuan Ma
- MOE-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Xiaolan Ying
- MOE-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Cancan Zhou
- MOE-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Chonghuai Yan
- MOE-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China.
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18
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Feng B, Zhu R, Xu S, Chen Y, Di J. A sensitive LSPR sensor based on glutathione-functionalized gold nanoparticles on a substrate for the detection of Pb2+ ions. RSC Adv 2018. [DOI: 10.1039/c7ra13127e] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
A plasmonic probe based on gold nanoparticles (AuNPs) on a solid substrate for the detection of Pb2+ was developed.
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Affiliation(s)
- Bingbing Feng
- College of Chemistry, Chemical Engineering and Material Science
- Soochow University
- Suzhou
- PR China
| | - Rui Zhu
- College of Chemistry, Chemical Engineering and Material Science
- Soochow University
- Suzhou
- PR China
| | - Shouming Xu
- College of Chemistry, Chemical Engineering and Material Science
- Soochow University
- Suzhou
- PR China
| | - Yu Chen
- College of Chemistry, Chemical Engineering and Material Science
- Soochow University
- Suzhou
- PR China
| | - Junwei Di
- College of Chemistry, Chemical Engineering and Material Science
- Soochow University
- Suzhou
- PR China
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Rosen-Carole CB, Auinger P, Howard CR, Brownell EA, Lanphear BP. Low-Level Prenatal Toxin Exposures and Breastfeeding Duration: A Prospective Cohort Study. Matern Child Health J 2017; 21:2245-2255. [PMID: 28735496 PMCID: PMC5671900 DOI: 10.1007/s10995-017-2346-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Introduction Maternal exposure to tobacco smoke is associated with shortened breastfeeding duration, but few studies have examined the effects on breastfeeding outcomes of low level exposures to other toxic chemicals. Moreover, it is unclear if passive smoking is associated with duration of breastfeeding. Our objective was therefore to examine the effect of low-level prenatal exposures to common environmental toxins (tobacco smoke, lead, and phthalates) on breastfeeding exclusivity and duration. Methods We conducted an analysis of data from the Health Outcomes and Measures of the Environment (HOME) Study. Serum and urine samples were collected at approximately 16 and 26 weeks gestation and at delivery from 373 women; 302 breastfed their infants. Maternal infant feeding interviews were conducted a maximum of eight times through 30 months postpartum. The main predictor variables for this study were gestational exposures to tobacco smoke (measured by serum cotinine), lead, and phthalates. Passive smoke exposure was defined as cotinine levels of 0.015-3.0 μg/mL. Primary outcomes were duration of any and exclusive breastfeeding. Results Serum cotinine concentrations were negatively associated with the duration of any breastfeeding (29.9 weeks unexposed vs. 24.9 weeks with passive exposure, p = 0.04; and 22.4 weeks with active exposure, p = 0.12; p = 0.03 for linear trend), but not duration of exclusive breastfeeding. Prenatal levels of blood lead and urinary phthalate metabolites were not significantly associated with duration of any or exclusive breastfeeding. Conclusions Passive exposure to tobacco smoke during pregnancy was associated with shortened duration of any breastfeeding.
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Affiliation(s)
- Casey B Rosen-Carole
- University of Rochester School of Medicine and Dentistry, 601 Elmwood Ave, BOX 777, Rochester, NY, 14642, USA.
| | - Peggy Auinger
- University of Rochester School of Medicine and Dentistry, 601 Elmwood Ave, BOX 777, Rochester, NY, 14642, USA
| | - Cynthia R Howard
- University of Rochester School of Medicine and Dentistry, 601 Elmwood Ave, BOX 777, Rochester, NY, 14642, USA
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Röllin HB, Olutola B, Channa K, Odland JØ. Reduction of in utero lead exposures in South African populations: Positive impact of unleaded petrol. PLoS One 2017; 12:e0186445. [PMID: 29036215 PMCID: PMC5643117 DOI: 10.1371/journal.pone.0186445] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 10/02/2017] [Indexed: 11/18/2022] Open
Abstract
Background Prenatal exposure to lead (Pb) has been shown to have negative and irreversible health impacts on foetal and early childhood development, affecting morbidity and mortality in adulthood. This study aimed to assess in utero Pb exposure, examine birth outcomes, and identify confounding factors in the large cohort of South African population, following the legislated removal of Pb from petrol. Methods Lead was measured in the maternal blood, urine and cord blood using Inductive Coupled Plasma Mass spectrometry (ICP-MS). The statistical analyses included Spearman’s correlation, Wilcoxon rank sum (Mann Whitney), Kruskal-Wallis rank tests and multivariate linear regression. Results Overall, the geometric mean (GM) of Pb in maternal blood (PbB) was 1.32 μg/dL (n = 640; 95% CI, 1.24–1.40). In the subset cohort, the GM of paired maternal PbB and cord blood (PbC) was 1.73 μg/dL (n = 350; 95% CI, 1.60–1.86) and 1.26 μg/dL (n = 317; 95% CI, 1.18–1.35), respectively with a positive correlation between the log PbB and the log PbC (rho = 0.65, p = <0.001). Birth outcomes showed geographical differences in the gestational age (p<0.001), birth length (p = 0.028) and head circumference (p<0.001), Apgar score at 5 min (p<0.001) and parity (p<0.002). In female neonates, a positive association was found between PbC and head circumference (rho = 0.243; p<0.016). The maternal PbB levels were positively correlated with race, educational status, water sources, cooking fuels and use of pesticides at home. Conclusions This study has demonstrated not only the positive impact that the introduction of unleaded petrol and lead-free paint has had on in utero exposure to Pb in South Africa, but has also contributed new data on the topic, in a region where such data and scientific investigations in this field are lacking. Future research should evaluate if similar effects can be detected in young children and the adult population.
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Affiliation(s)
- Halina B. Röllin
- School of Health Systems and Public Health, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
- Environment and Health Research Unit, Medical Research Council, Johannesburg, South Africa
- * E-mail:
| | - Bukola Olutola
- School of Health Systems and Public Health, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - Kalavati Channa
- Lancet Laboratories, Department of Analytical Chemistry, Johannesburg, South Africa
- Department of Biomedical Technology, School of Health Sciences, University of Johannesburg, Johannesburg, South Africa
| | - Jon Ø. Odland
- School of Health Systems and Public Health, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
- Institute of Community Medicine, University of Tromsø, Tromsø, Norway
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Boivin MJ, Weiss J, Chhaya R, Seffren V, Awadu J, Sikorskii A, Giordani B. The feasibility of automated eye tracking with the Early Childhood Vigilance Test of attention in younger HIV-exposed Ugandan children. Neuropsychology 2017; 31:525-534. [PMID: 28541084 PMCID: PMC5501490 DOI: 10.1037/neu0000382] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
OBJECTIVE Tobii eye tracking was compared with webcam-based observer scoring on an animation viewing measure of attention (Early Childhood Vigilance Test; ECVT) to evaluate the feasibility of automating measurement and scoring. Outcomes from both scoring approaches were compared with the Mullen Scales of Early Learning (MSEL), Color-Object Association Test (COAT), and Behavior Rating Inventory of Executive Function for preschool children (BRIEF-P). METHOD A total of 44 children 44 to 65 months of age were evaluated with the ECVT, COAT, MSEL, and BRIEF-P. Tobii ×2-30 portable infrared cameras were programmed to monitor pupil direction during the ECVT 6-min animation and compared with observer-based PROCODER webcam scoring. RESULTS Children watched 78% of the cartoon (Tobii) compared with 67% (webcam scoring), although the 2 measures were highly correlated (r = .90, p = .001). It is possible for 2 such measures to be highly correlated even if one is consistently higher than the other (Bergemann et al., 2012). Both ECVT Tobii and webcam ECVT measures significantly correlated with COAT immediate recall (r = .37, p = .02 vs. r = .38, p = .01, respectively) and total recall (r = .33, p = .06 vs. r = .42, p = .005) measures. However, neither the Tobii eye tracking nor PROCODER webcam ECVT measures of attention correlated with MSEL composite cognitive performance or BRIEF-P global executive composite. CONCLUSION ECVT scoring using Tobii eye tracking is feasible with at-risk very young African children and consistent with webcam-based scoring approaches in their correspondence to one another and other neurocognitive performance-based measures. By automating measurement and scoring, eye tracking technologies can improve the efficiency and help better standardize ECVT testing of attention in younger children. This holds promise for other neurodevelopmental tests where eye movements, tracking, and gaze length can provide important behavioral markers of neuropsychological and neurodevelopmental processes associated with such tests. (PsycINFO Database Record
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Affiliation(s)
- Michael J. Boivin
- Michigan State University Department of Psychiatry and of Neurology & Ophthalmology, University of Michigan Department of Psychiatry
| | | | - Ronak Chhaya
- Michigan State University College of Human Medicine
| | | | - Jorem Awadu
- Michigan State University College of Education
| | - Alla Sikorskii
- Michigan State University Department of Statistics and Probability
| | - Bruno Giordani
- University of Michigan Department of Psychiatry, Psychology, and Nursing
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Chhaya R, Weiss J, Seffren V, Sikorskii A, Winke PM, Ojuka JC, Boivin MJ. The feasibility of an automated eye-tracking-modified Fagan test of memory for human faces in younger Ugandan HIV-exposed children. Child Neuropsychol 2017; 24:686-701. [PMID: 28532283 DOI: 10.1080/09297049.2017.1329412] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
OBJECTIVE The Fagan Test of Infant Intelligence (FTII) uses longer gaze length for unfamiliar versus familiar human faces to gauge visual-spatial encoding, attention, and working memory in infants. Our objective was to establish the feasibility of automated eye tracking with the FTII in HIV-exposed Ugandan infants. METHOD The FTII was administered to 31 perinatally HIV-exposed noninfected (HEU) Ugandan children 6-12 months of age (11 boys; M = 0.69 years, SD = 0.14; 19 girls; M = 0.79, SD = 0.15). A series of 10 different faces were presented (familiar face exposure for 25 s followed by a gaze preference trial of 15 s with both the familiar and unfamiliar faces). Tobii X2-30 infrared camera for pupil detection provided automated eye-tracking measures of gaze location and length during presentation of Ugandan faces selected to correspond to the gender, age (adult, child), face expression, and orientation of the original FTII. Eye-tracking gaze length for unfamiliar faces was correlated with performance on the Mullen Scales of Early Learning (MSEL). RESULTS Infants gazed longer at the novel picture compared to familiar across 10 novelty preference trials. Better MSEL cognitive development was correlated with proportionately longer time spent looking at the novel faces (r(30) = 0.52, p = .004); especially for the Fine Motor Cognitive Sub-scale (r(30) = 0.54, p = .002). CONCLUSION Automated eye tracking in a human face recognition test proved feasible and corresponded to the MSEL composite cognitive development in HEU infants in a resource-constrained clinical setting. Eye tracking may be a viable means of enhancing the validity and accuracy of other neurodevelopmental measures in at-risk children in sub-Saharan Africa.
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Affiliation(s)
- Ronak Chhaya
- a College of Human Medicine , Michigan State University , East Lansing , MI , USA
| | - Jonathan Weiss
- a College of Human Medicine , Michigan State University , East Lansing , MI , USA
| | - Victoria Seffren
- b School of Public Health , University of Michigan , Ann Arbor , MI , USA
| | - Alla Sikorskii
- c Department of Statistics & Probability , Michigan State University , East Lansing , MI , USA
| | - Paula M Winke
- d Department of Linguistics, Germanic, Slavic, Asian, & African Languages , Michigan State University , East Lansing , MI , USA
| | | | - Michael J Boivin
- f Department of Psychiatry and Neurology & Ophthalmology , Michigan State University , East Lansing , MI , USA
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23
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Sun Y, Zuo T, Guo F, Sun J, Liu Z, Diao G. Perylene dye-functionalized silver nanoparticles serving as pH-dependent metal sensor systems. RSC Adv 2017. [DOI: 10.1039/c7ra03264a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Lysine-functionalized perylene was used to modify nanoparticles. Due to the benefits from a synergetic effect that originated between the perylene and silver nanoparticles, color-based metal sensor systems were established.
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Affiliation(s)
- Yan Sun
- College of Chemistry and Chemical Engineering
- Yangzhou University
- China
| | - Tongfei Zuo
- College of Chemistry and Chemical Engineering
- Yangzhou University
- China
| | - Fang Guo
- College of Chemistry and Chemical Engineering
- Yangzhou University
- China
| | - Jing Sun
- College of Chemistry and Chemical Engineering
- Yangzhou University
- China
| | - Ziwei Liu
- College of Chemistry and Chemical Engineering
- Yangzhou University
- China
| | - Guowang Diao
- College of Chemistry and Chemical Engineering
- Yangzhou University
- China
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24
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Renzetti S, Just AC, Burris HH, Oken E, Amarasiriwardena C, Svensson K, Mercado-García A, Cantoral A, Schnaas L, Baccarelli AA, Wright RO, Téllez-Rojo MM. The association of lead exposure during pregnancy and childhood anthropometry in the Mexican PROGRESS cohort. ENVIRONMENTAL RESEARCH 2017; 152:226-232. [PMID: 27810680 PMCID: PMC5135667 DOI: 10.1016/j.envres.2016.10.014] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 10/10/2016] [Accepted: 10/14/2016] [Indexed: 05/17/2023]
Abstract
Lead exposure during pregnancy remains a public health problem with potential lifelong impacts on children's growth and development. Mexico is unique in that stunting and obesity are both major public health concerns in children. This situation might be exacerbated by lead exposure which remains more common in Mexico than in the United States due in part to the use of lead glazed pottery in food preparation and storage. Our objective is to determine how lead exposure during pregnancy is associated with children's growth parameters, including height, weight, body mass index and percentage body fat measured between ages 4-6 years old in a Mexico City pregnancy cohort. Blood lead was collected in the 2nd and 3rd trimester of pregnancy as well as at delivery. Bone lead was assessed in mothers as a long term exposure biomarker. We performed multivariable linear regression analyses to assess the association between each of these lead exposure biomarkers and child anthropometry. We found a significant negative association between maternal 3rd trimester blood lead concentration and offspring height for age (β-0.10; 95% CI -0.19, -0.01), and a negative association between maternal 3rd trimester blood lead concentration and weight for age (β-0.11; 95% CI -0.22,-0.003). Our results in this Mexican population add to previous findings of an association of lead and decreased stature and weight in early childhood. Ongoing follow-up and longitudinal analyses may help elucidate how this impacts growth trajectory and other children's health outcomes.
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Affiliation(s)
- Stefano Renzetti
- Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Allan C Just
- Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States.
| | - Heather H Burris
- Department of Neonatology, Beth Israel Deaconess Medical Center and Departments of Pediatrics and Obstetrics and Reproductive Biology, Harvard Medical School, Boston, MA, United States
| | - Emily Oken
- Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA, United States
| | - Chitra Amarasiriwardena
- Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Katherine Svensson
- Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Adriana Mercado-García
- Center for Nutrition and Health Research, National Institute of Public Health, Cuernavaca, Morelos, México
| | - Alejandra Cantoral
- Center for Nutrition and Health Research, National Institute of Public Health, Cuernavaca, Morelos, México
| | | | - Andrea A Baccarelli
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, United States
| | - Robert O Wright
- Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Martha María Téllez-Rojo
- Center for Nutrition and Health Research, National Institute of Public Health, Cuernavaca, Morelos, México
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Ghasemi S, Hosseini M, Feizpour A, Alipour F, Sadeghi A, Vafaee F, Mohammadpour T, Soukhtanloo M, Ebrahimzadeh Bideskan A, Beheshti F. Beneficial effects of garlic on learning and memory deficits and brain tissue damages induced by lead exposure during juvenile rat growth is comparable to the effect of ascorbic acid. Drug Chem Toxicol 2016; 40:206-214. [DOI: 10.1080/01480545.2016.1197238] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Simagol Ghasemi
- Neurocognitive Research Center, School of Medicine, Mashhad University of Medical Sciences, Iran,
| | - Mahmoud Hosseini
- Neurocognitive Research Center, School of Medicine, Mashhad University of Medical Sciences, Iran,
| | - Azadeh Feizpour
- Neurogenic Inflammation Research Center and Department of Physiology, School of Medicine, Mashhad University of Medical Sciences, Iran,
| | - Fatemeh Alipour
- Department of Anatomy and Cell Biology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran,
| | - Akram Sadeghi
- Department of Anatomy and Cell Biology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran,
| | - Farzaneh Vafaee
- Neurocognitive Research Center, School of Medicine, Mashhad University of Medical Sciences, Iran,
| | - Toktam Mohammadpour
- Pharmacological Research Center of Medicinal Plants, School of Medicine, Mashhad University of Medical Sciences, Iran, and
| | - Mohammad Soukhtanloo
- Department of Clinical Biochemistry, School of Medicine, Mashhad University of Medical Sciences, Iran
| | | | - Farimah Beheshti
- Neurocognitive Research Center, School of Medicine, Mashhad University of Medical Sciences, Iran,
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Yang Y, Zhang Y, Shen JC, Yang H, Zhou ZG, Yang SP. A highly selective magnetic sensor with functionalized Fe/Fe 3 O 4 nanoparticles for detection of Pb 2+. CHINESE CHEM LETT 2016. [DOI: 10.1016/j.cclet.2016.01.060] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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27
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Shepherd TJ, Dirks W, Roberts NMW, Patel JG, Hodgson S, Pless-Mulloli T, Walton P, Parrish RR. Tracing fetal and childhood exposure to lead using isotope analysis of deciduous teeth. ENVIRONMENTAL RESEARCH 2016; 146:145-153. [PMID: 26752082 DOI: 10.1016/j.envres.2015.12.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 12/11/2015] [Accepted: 12/15/2015] [Indexed: 06/05/2023]
Abstract
We report progress in using the isotopic composition and concentration of Pb in the dentine and enamel of deciduous teeth to provide a high resolution time frame of exposure to Pb during fetal development and early childhood. Isotope measurements (total Pb and (208)Pb/(206)Pb, (207)Pb/(206)Pb ratios) were acquired by laser ablation inductively coupled mass spectrometry at contiguous 100 micron intervals across thin sections of the teeth; from the outer enamel surface to the pulp cavity. Teeth samples (n=10) were selected from two cohorts of children, aged 5-8 years, living in NE England. By integrating the isotope data with histological analysis of the teeth, using the daily incremental lines in dentine, we were able to assign true estimated ages to each ablation point (first 2-3 years for molars, first 1-2 years for incisors+pre-natal growth). Significant differences were observed in the isotope composition and concentration of Pb between children, reflecting differences in the timing and sources of exposure during early childhood. Those born in 2000, after the withdrawal of leaded petrol in 1999, have the lowest dentine Pb levels (<0.2µgPb/g) with (208)Pb/(206)Pb (mean ±2σ: 2.126-2.079) (208)Pb/(206)Pb (mean ±2σ: 0.879-0.856) ratios that correlate very closely with modern day Western European industrial aerosols (PM10, PM2.5) suggesting that diffuse airborne pollution was probably the primary source and exposure pathway. Legacy lead, if present, is insignificant. For those born in 1997, dentine lead levels are typically higher (>0.4µgPb/g) with (208)Pb/(206)Pb (mean ±2σ: 2.145-2.117) (208)Pb/(206)Pb (mean ±2σ: 0.898-0.882) ratios that can be modelled as a binary mix between industrial aerosols and leaded petrol emissions. Short duration, high intensity exposure events (1-2 months) were readily identified, together with evidence that dentine provides a good proxy for childhood changes in the isotope composition of blood Pb. Our pilot study confirms that laser ablation Pb isotope analysis of deciduous teeth, when carried out in conjunction with histological analysis, permits a reconstruction of the timing, duration and source of exposure to Pb during early childhood. With further development, this approach has the potential to study larger cohorts and appraise environments where the levels of exposure to Pb are much higher.
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Affiliation(s)
- Thomas J Shepherd
- Centre for Oral Health Research, School of Dental Sciences, Newcastle University, Newcastle upon Tyne, UK; British Geological Survey, Keyworth, Nottingham, UK
| | - Wendy Dirks
- Department of Anthropology, Durham University, Durham, UK
| | - Nick M W Roberts
- NERC Isotope Geosciences Laboratory, British Geological Survey, Nottingham, UK
| | | | - Susan Hodgson
- MRC-PHE Centre for Environment and Health, Department of Epidemiology and Biostatistics, Imperial College London, UK
| | - Tanja Pless-Mulloli
- Institute of Health and Society, Newcastle University, Newcastle upon Tyne, UK
| | - Pamela Walton
- Centre for Oral Health Research, School of Dental Sciences, Newcastle University, Newcastle upon Tyne, UK
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28
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Shi Y, Wang H, Jiang X, Sun B, Song B, Su Y, He Y. Ultrasensitive, Specific, Recyclable, and Reproducible Detection of Lead Ions in Real Systems through a Polyadenine-Assisted, Surface-Enhanced Raman Scattering Silicon Chip. Anal Chem 2016; 88:3723-9. [PMID: 26923545 DOI: 10.1021/acs.analchem.5b04551] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
It is of great significance to accurately and reliably detect trace lead(II) (Pb(2+)) ions, preferably at sub-nM level due to the possible long-term accumulation of Pb(2+) in the human body, which may cause serious threats to human health. However, a suitable Pb(2+) sensor meeting the demands is still scanty. Herein, we develop a polyadenine-assisted, surface-enhanced Raman scattering (SERS) silicon chip (0.5 cm × 0.5 cm) composed of core (Ag)-satellite (Au) nanoparticles (Ag-Au NPs)-decorated silicon wafers (Ag-Au NPs@Si) for high-performance Pb(2+) detection. Typically, strong SERS signals could be measured when DNAzyme conjugated on the SERS silicon chip is specifically activated by Pb(2+), cleaving the substrate strand into two free DNA strands. A good linearity exists between the normalized Raman intensities and the logarithmic concentrations of Pb(2+) ranging from 10 pM to 1 μM with a good correlation coefficient, R(2) of 0.997. Remarkably, Pb(2+) ions with a low concentration of 8.9 × 10(-12) M can be readily determined via the SERS silicon chip ascribed to its superior SERS enhancement, much lower than those (∼nM) reported by other SERS sensors. Additionally, the developed chip features good selectivity and recyclability (e.g., ∼11.1% loss of Raman intensity after three cycles). More importantly, the as-prepared chip can be used for accurate and reliable determination of unknown Pb(2+) ions in real systems including lake water, tap water and industrial wastewater, with the RSD value less than 12%.
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Affiliation(s)
- Yu Shi
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou, Jiangsu 215123, China
| | - Houyu Wang
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou, Jiangsu 215123, China
| | - Xiangxu Jiang
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou, Jiangsu 215123, China
| | - Bin Sun
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou, Jiangsu 215123, China
| | - Bin Song
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou, Jiangsu 215123, China
| | - Yuanyuan Su
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou, Jiangsu 215123, China
| | - Yao He
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou, Jiangsu 215123, China
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29
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Yilmaz E, Ocsoy I, Ozdemir N, Soylak M. Bovine serum albumin-Cu(II) hybrid nanoflowers: An effective adsorbent for solid phase extraction and slurry sampling flame atomic absorption spectrometric analysis of cadmium and lead in water, hair, food and cigarette samples. Anal Chim Acta 2016; 906:110-117. [PMID: 26772130 DOI: 10.1016/j.aca.2015.12.001] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 12/01/2015] [Accepted: 12/12/2015] [Indexed: 01/10/2023]
Abstract
Herein, the synthesis of bovine serum albumin-Cu(II) hybrid nanoflowers (BSA-NFs) through the building blocks of bovine serum albumin (BSA) and copper(II) ions in phosphate buffered saline (PBS) and their use as adsorbent for cadmium and lead ions are reported. The BSA-NFs, for the first time, were efficiently utilized as novel adsorbent for solid phase extraction (SPE) of cadmium and lead ions in water, food, cigarette and hair samples. The method is based on the separation and pre-concentration of Cd(II) and Pb(II) by BSA-NFs prior to determination by slurry analysis via flame atomic absorption spectrometry (FAAS). The analytes were adsorbed on BSA-NFs under the vortex mixing and then the ion-loaded slurry was separated and directly introduced into the flame AAS nebulizer by using a hand-made micro sample introduction system to eliminate a number of drawbacks. The effects of analytical key parameters, such as pH, amount of BSA-NFs, vortexing time, sample volume, and matrix effect of foreign ions on adsorbing of Cd(II) and Pb(II) were systematically investigated and optimized. The limits of detection (LODs) for Cd(II) and Pb(II) were calculated as 0.37 μg L(-)(1) and 8.8 μg L(-)(1), respectively. The relative standard deviation percentages (RSDs) (N = 5) for Cd(II) and Pb(II) were 7.2%, and 5.0%, respectively. The accuracy of the developed procedure was validated by the analysis of certified reference materials (TMDA-53.3 Fortified Water, TMDA-70 Fortified Water, SPS-WW2 Waste Water, NCSDC-73349 Bush Branches and Leaves) and by addition/recovery analysis. The quantitative recoveries were obtained for the analysis of certified reference materials and addition/recovery tests. The method was successfully applied to the analysis of cadmium and lead in water, food, cigarette and hair samples.
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Affiliation(s)
- Erkan Yilmaz
- Department of Chemistry, Faculty of Sciences, Erciyes University, Kayseri 38039, Turkey
| | - Ismail Ocsoy
- Department of Analytical Chemistry, Faculty of Pharmacy, Erciyes University, Kayseri 38039, Turkey; Nanotechnology Research Center (ERNAM), Erciyes University, Kayseri 38039, Turkey
| | - Nalan Ozdemir
- Department of Chemistry, Faculty of Sciences, Erciyes University, Kayseri 38039, Turkey
| | - Mustafa Soylak
- Department of Chemistry, Faculty of Sciences, Erciyes University, Kayseri 38039, Turkey.
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30
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Shah F, Ullah N, Kazi TG, Khan A, Kandhro GA, Afridi HI, Arain MB, Khan Z, Farooq U. Lead Assessment in Biological Samples of Children with Different Gastrointestinal Disorders. Biol Trace Elem Res 2016; 169:41-5. [PMID: 26085058 DOI: 10.1007/s12011-015-0401-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Accepted: 06/08/2015] [Indexed: 01/17/2023]
Abstract
Lead (Pb) levels have been evaluated in the biological samples of children with different gastrointestinal disorders. Blood, scalp hair, and urine samples of children (of age 4-10 years) complaining about different gastrointestinal disorders were analyzed. For comparison, age matched healthy subjects were also included in this study. Biological samples were digested in a microwave oven prior to Pb determination by graphite furnace atomic absorption spectrometry. Significant differences in Pb profile were found between the diseased and referent children. Elevated Pb contents were observed in case of diseased children than WHO permissible limit, while normal results were obtained for healthy referents. The results were compared with those of healthy children having the same age, socioeconomic status, and residential areas.
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Affiliation(s)
- Faheem Shah
- Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad, 22060, Pakistan.
- Department of Chemistry, Faculty of Science, Federal Urdu University of Arts, Science and Technology, Gulshan Campus, Karachi, Pakistan.
| | - Naeem Ullah
- National Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, 76080, Pakistan.
| | - Tasneem Gul Kazi
- National Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, 76080, Pakistan.
| | - Ajmal Khan
- Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad, 22060, Pakistan.
| | - Ghulam Abbas Kandhro
- Faculty of Allied Engineering and Technology, Dawood University of Engineering and Technology, Karachi, Pakistan.
| | - Hassan Imran Afridi
- National Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, 76080, Pakistan.
| | | | - Zahid Khan
- Department of Pharmacology, Faculty of Pharmacy, Federal Urdu University of Arts, Science and Technology, Gulshan Campus, Karachi, Pakistan.
| | - Umar Farooq
- Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad, 22060, Pakistan.
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31
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Sain D, Kumari C, Kumar A, Nayek HP, Dey S. Lead ion induced chemodosimeter approach of a tripodal hydroxyl-quinoline based phospho-ester through P–O bond cleavage. Dalton Trans 2016; 45:9187-92. [DOI: 10.1039/c6dt00941g] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pb2+ induced phosphoester hydrolysis followed by the formation of a penta coordinated chelate complex of lead.
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Affiliation(s)
- Dibyendu Sain
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad
- India
| | - Chanda Kumari
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad
- India
| | - Ashish Kumar
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad
- India
| | - Hari Pada Nayek
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad
- India
| | - Swapan Dey
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad
- India
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32
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Mei J, Leung NLC, Kwok RTK, Lam JWY, Tang BZ. Aggregation-Induced Emission: Together We Shine, United We Soar! Chem Rev 2015; 115:11718-940. [DOI: 10.1021/acs.chemrev.5b00263] [Citation(s) in RCA: 5139] [Impact Index Per Article: 571.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ju Mei
- HKUST-Shenzhen Research Institute, Hi-Tech
Park, Nanshan, Shenzhen 518057, China
- Department of Chemistry,
HKUST Jockey Club Institute for Advanced Study, Institute of Molecular
Functional Materials, Division of Biomedical Engineering, State Key
Laboratory of Molecular Neuroscience, Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Nelson L. C. Leung
- HKUST-Shenzhen Research Institute, Hi-Tech
Park, Nanshan, Shenzhen 518057, China
- Department of Chemistry,
HKUST Jockey Club Institute for Advanced Study, Institute of Molecular
Functional Materials, Division of Biomedical Engineering, State Key
Laboratory of Molecular Neuroscience, Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Ryan T. K. Kwok
- HKUST-Shenzhen Research Institute, Hi-Tech
Park, Nanshan, Shenzhen 518057, China
- Department of Chemistry,
HKUST Jockey Club Institute for Advanced Study, Institute of Molecular
Functional Materials, Division of Biomedical Engineering, State Key
Laboratory of Molecular Neuroscience, Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Jacky W. Y. Lam
- HKUST-Shenzhen Research Institute, Hi-Tech
Park, Nanshan, Shenzhen 518057, China
- Department of Chemistry,
HKUST Jockey Club Institute for Advanced Study, Institute of Molecular
Functional Materials, Division of Biomedical Engineering, State Key
Laboratory of Molecular Neuroscience, Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Ben Zhong Tang
- HKUST-Shenzhen Research Institute, Hi-Tech
Park, Nanshan, Shenzhen 518057, China
- Department of Chemistry,
HKUST Jockey Club Institute for Advanced Study, Institute of Molecular
Functional Materials, Division of Biomedical Engineering, State Key
Laboratory of Molecular Neuroscience, Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- Guangdong
Innovative Research Team, SCUT-HKUST Joint Research Laboratory, State
Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
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33
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Kuo SY, Li HH, Wu PJ, Chen CP, Huang YC, Chan YH. Dual Colorimetric and Fluorescent Sensor Based On Semiconducting Polymer Dots for Ratiometric Detection of Lead Ions in Living Cells. Anal Chem 2015; 87:4765-71. [DOI: 10.1021/ac504845t] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Shih-Yu Kuo
- Department
of Chemistry, National Sun Yat-sen University, 70 Lien Hai Road, Kaohsiung, Taiwan 80424
| | - Hsiang-Hau Li
- Department
of Chemistry, National Sun Yat-sen University, 70 Lien Hai Road, Kaohsiung, Taiwan 80424
| | - Pei-Jing Wu
- Department
of Chemistry, National Sun Yat-sen University, 70 Lien Hai Road, Kaohsiung, Taiwan 80424
| | - Chuan-Pin Chen
- Department
of Chemistry, National Sun Yat-sen University, 70 Lien Hai Road, Kaohsiung, Taiwan 80424
| | - Ya-Chi Huang
- Department
of Chemistry, National Sun Yat-sen University, 70 Lien Hai Road, Kaohsiung, Taiwan 80424
| | - Yang-Hsiang Chan
- Department
of Chemistry, National Sun Yat-sen University, 70 Lien Hai Road, Kaohsiung, Taiwan 80424
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34
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Hong YC, Kulkarni SS, Lim YH, Kim E, Ha M, Park H, Kim Y, Kim BN, Chang N, Oh SY, Kim YJ, Park C, Ha EH. Postnatal growth following prenatal lead exposure and calcium intake. Pediatrics 2014; 134:1151-9. [PMID: 25422017 DOI: 10.1542/peds.2014-1658] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND The effects on postnatal growth of maternal exposure to low levels of lead during pregnancy have not been well established. In addition, information is limited regarding the protective effect of dietary calcium intake during pregnancy against the effect of lead for fetal and postnatal growth. We investigated the relationship between prenatal exposure to lead and growth at birth and 6, 12, and 24 months postnatal, and evaluated the role of calcium intake against the effect of lead. METHODS A total of 1150 pregnant women, and their subsequent offspring, enrolled in a prospective birth cohort study (Mothers and Children's Environmental Health Study), were evaluated. Multivariable regression analysis was conducted to estimate the effects of prenatal maternal blood lead levels on growth at each follow-up. RESULTS The blood lead levels of participating mothers were <5.0 μg/dL and mean levels were 1.25 μg/dL during the early (before 20 gestational weeks) and late (at delivery) gestational periods. Prenatal exposure to lead, particularly in late pregnancy, was significantly associated with a reduction in infantile growth at 24 months. When pregnant women had dietary calcium intake at mean or upper level, the association was not significant. In contrast, lower than mean level of calcium intake intensified the adverse effect of prenatal lead exposure on growth in children. CONCLUSIONS Prenatal lead exposure <5.0 μg/dL adversely affects postnatal growth and low calcium intake aggravates the effect, indicating more stringent control of lead and sufficient intake of calcium are necessary to help children's health.
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Affiliation(s)
- Yun-Chul Hong
- Institute of Environmental Medicine, Medical Research Center
| | | | - Youn-Hee Lim
- Institute of Environmental Medicine, Medical Research Center, Environmental Health Center and
| | | | - Mina Ha
- Department of Preventive Medicine, College of Medicine, Dankook University, Cheonan, Republic of Korea
| | | | - Yangho Kim
- Department of Occupational and Environmental Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Bung-Nyun Kim
- Division of Child and Adolescent Psychiatry, Department of Psychiatry, and Institute of Human Behavioral Medicine, College of Medicine, Seoul National University, Seoul, Republic of Korea
| | - Namsoo Chang
- Department of Nutritional Science and Food Management, Ewha Womans University, Seoul, Republic of Korea
| | - Se-Young Oh
- Department of Food and Nutrition, Kyung Hee University, Seoul, Republic of Korea; and
| | - Young-Ju Kim
- Obstetrics Medicine, Ewha Medical Research Center, School of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Chooghee Park
- Environmental Health Research Division, National Institute of Environment Research, Seoul, Republic of Korea
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Huang Y, Ma Y, Chen Y, Wu X, Fang L, Zhu Z, Yang CJ. Target-Responsive DNAzyme Cross-Linked Hydrogel for Visual Quantitative Detection of Lead. Anal Chem 2014; 86:11434-9. [DOI: 10.1021/ac503540q] [Citation(s) in RCA: 135] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Yishun Huang
- The MOE Key Laboratory of Spectrochemical
Analysis and Instrumentation, Innovation Center of Chemistry for Energy
Materials, State Key Laboratory of Physical Chemistry
of Solid Surfaces, the Key Laboratory for Chemical Biology of Fujian
Province, Department of Chemical Biology, College of
Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, People’s Republic of China
| | - Yanli Ma
- The MOE Key Laboratory of Spectrochemical
Analysis and Instrumentation, Innovation Center of Chemistry for Energy
Materials, State Key Laboratory of Physical Chemistry
of Solid Surfaces, the Key Laboratory for Chemical Biology of Fujian
Province, Department of Chemical Biology, College of
Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, People’s Republic of China
| | - Yahong Chen
- The MOE Key Laboratory of Spectrochemical
Analysis and Instrumentation, Innovation Center of Chemistry for Energy
Materials, State Key Laboratory of Physical Chemistry
of Solid Surfaces, the Key Laboratory for Chemical Biology of Fujian
Province, Department of Chemical Biology, College of
Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, People’s Republic of China
| | - Xuemeng Wu
- The MOE Key Laboratory of Spectrochemical
Analysis and Instrumentation, Innovation Center of Chemistry for Energy
Materials, State Key Laboratory of Physical Chemistry
of Solid Surfaces, the Key Laboratory for Chemical Biology of Fujian
Province, Department of Chemical Biology, College of
Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, People’s Republic of China
| | - Luting Fang
- The MOE Key Laboratory of Spectrochemical
Analysis and Instrumentation, Innovation Center of Chemistry for Energy
Materials, State Key Laboratory of Physical Chemistry
of Solid Surfaces, the Key Laboratory for Chemical Biology of Fujian
Province, Department of Chemical Biology, College of
Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, People’s Republic of China
| | - Zhi Zhu
- The MOE Key Laboratory of Spectrochemical
Analysis and Instrumentation, Innovation Center of Chemistry for Energy
Materials, State Key Laboratory of Physical Chemistry
of Solid Surfaces, the Key Laboratory for Chemical Biology of Fujian
Province, Department of Chemical Biology, College of
Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, People’s Republic of China
| | - Chaoyong James Yang
- The MOE Key Laboratory of Spectrochemical
Analysis and Instrumentation, Innovation Center of Chemistry for Energy
Materials, State Key Laboratory of Physical Chemistry
of Solid Surfaces, the Key Laboratory for Chemical Biology of Fujian
Province, Department of Chemical Biology, College of
Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, People’s Republic of China
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Lead (Pb), intellectual functioning and health. Ir J Psychol Med 2014; 26:152-154. [DOI: 10.1017/s0790966700000513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Martins E, Varea A, Apezteguía M, González HF, Girardelli A, Caro LS, Lobisuto M, Delgado G, Disalvo L. Prenatal lead exposure and relationship with maternal exposure determinants in a public maternity hospital of La Plata, Argentina. THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 473-474:43-47. [PMID: 24361446 DOI: 10.1016/j.scitotenv.2013.11.128] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Revised: 11/25/2013] [Accepted: 11/26/2013] [Indexed: 06/03/2023]
Abstract
Prenatal lead exposure is a health hazard that may cause cognitive development impairments and other adverse effects in children. We conducted a cross sectional study analyzing cord blood lead levels (CBLL) of newborns and their relationship with maternal determinants of lead exposure. Mothers answered a questionnaire about socio-demographic, lifestyle habits and environmental characteristics. We used Mann-Whitney's test to compare CBLL geometrical means (GM) corresponding to the presence or absence of each lead exposure determinant, and Chi square test to study the relationship between CBLL and maternal lead exposure determinants. A total of 159 newborns participated in the study. CBLL GM was 2.1 μg/dL; and 25% of the participants had a measurable CBLL (LOQ=3.3 μg/dl). Although the participants had several determinants of lead exposure, we only found a significant relationship with inside household determinants, such as presence of lead piping (p=0.026), unplastered walls (p=0.046) and peeling paint (p=0.048). Our results show that CBLL GM was similar to that reported in several studies conducted around the world. However, 25% of the participants might have some degree of risk for lead poisoning.
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Affiliation(s)
- Enrique Martins
- Instituto de Desarrollo e Investigaciones Pediátricas (IDIP) "Prof. Dr. Fernando E. Viteri", Hospital de Niños de La Plata (Ministerio de Salud/CIC-PBA), La Plata, Argentina.
| | - Ana Varea
- Instituto de Desarrollo e Investigaciones Pediátricas (IDIP) "Prof. Dr. Fernando E. Viteri", Hospital de Niños de La Plata (Ministerio de Salud/CIC-PBA), La Plata, Argentina
| | - María Apezteguía
- Instituto de Desarrollo e Investigaciones Pediátricas (IDIP) "Prof. Dr. Fernando E. Viteri", Hospital de Niños de La Plata (Ministerio de Salud/CIC-PBA), La Plata, Argentina
| | - Horacio F González
- Instituto de Desarrollo e Investigaciones Pediátricas (IDIP) "Prof. Dr. Fernando E. Viteri", Hospital de Niños de La Plata (Ministerio de Salud/CIC-PBA), La Plata, Argentina
| | - Ana Girardelli
- Servicio de Toxicología, Hospital de Niños "Sor María Ludovica" de La Plata, Argentina
| | - Laura Sanchez Caro
- Servicio de Neonatología, Hospital Interzonal General de Agudos "Gral. San Martín" de La Plata, Argentina
| | - Mario Lobisuto
- Servicio de Ginecología y Obstetricia, Hospital Interzonal General de Agudos "Gral. San Martín" de La Plata, Argentina
| | - Griselda Delgado
- Servicio de Neonatología, Hospital Interzonal General de Agudos "Gral. San Martín" de La Plata, Argentina
| | - Liliana Disalvo
- Instituto de Desarrollo e Investigaciones Pediátricas (IDIP) "Prof. Dr. Fernando E. Viteri", Hospital de Niños de La Plata (Ministerio de Salud/CIC-PBA), La Plata, Argentina
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Boucher O, Muckle G, Jacobson JL, Carter RC, Kaplan-Estrin M, Ayotte P, Dewailly É, Jacobson SW. Domain-specific effects of prenatal exposure to PCBs, mercury, and lead on infant cognition: results from the Environmental Contaminants and Child Development Study in Nunavik. ENVIRONMENTAL HEALTH PERSPECTIVES 2014; 122:310-6. [PMID: 24441767 PMCID: PMC3948023 DOI: 10.1289/ehp.1206323] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Accepted: 01/08/2014] [Indexed: 05/02/2023]
Abstract
BACKGROUND Polychlorinated biphenyls (PCBs), methylmercury (MeHg), and lead (Pb) are environmental contaminants known for their adverse effects on cognitive development. OBJECTIVES In this study we examined the effects of prenatal exposure to PCBs, MeHg, and Pb on cognitive development in a sample of Inuit infants from Arctic Québec. METHODS Mothers were recruited at local prenatal clinics. PCBs, mercury (Hg), Pb, and two seafood nutrients-docosahexaenoic acid (DHA) and selenium (Se)-were measured in umbilical cord blood. Infants (n = 94) were assessed at 6.5 and 11 months of age on the Fagan Test of Infant Intelligence (FTII), A-not-B test, and Bayley Scales of Infant Development-2nd Edition (BSID-II). RESULTS Multiple regression analyses revealed that higher prenatal PCB exposure was associated with decreased FTII novelty preference, indicating impaired visual recognition memory. Prenatal Hg was associated with poorer performance on A-not-B, which depends on working memory and is believed to be a precursor of executive function. Prenatal Pb was related to longer FTII fixation durations, indicating slower speed of information processing. CONCLUSIONS PCBs, MeHg, and Pb each showed specific and distinct patterns of adverse associations with the outcomes measured during infancy. By contrast, none of these exposures was associated with performance on the BSID-II, a global developmental measure. The more focused, narrow band measures of cognitive function that appeared to be sensitive to these exposures also provide early indications of long-term impairment in specific domains that would otherwise not likely be evident until school age. CITATION Boucher O, Muckle G, Jacobson JL, Carter RC, Kaplan-Estrin M, Ayotte P, Dewailly É, Jacobson SW. 2014. Domain-specific effects of prenatal exposure to PCBs, mercury, and lead on infant cognition: results from the Environmental Contaminants and Child Development Study in Nunavik. Environ Health Perspect 122:310-316; http://dx.doi.org/10.1289/ehp.1206323.
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Affiliation(s)
- Olivier Boucher
- Centre de Recherche du Centre hospitalier universitaire de Québec, Québec City, Québec, Canada
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Khandare DG, Joshi H, Banerjee M, Majik MS, Chatterjee A. An aggregation-induced emission based “turn-on” fluorescent chemodosimeter for the selective detection of Pb2+ ions. RSC Adv 2014. [DOI: 10.1039/c4ra09451d] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
An aggregation-induced emission (AIE) based “turn-on” fluorescent chemodosimeter for selective detection of Pb2+ ions has been developed. The probe is a phosphate functionalized tetraphenylethylene derivative and the resulting lead–TPE complex has very low solubility in working solvent and triggers AIE and shows a low detection limit of 10 ppb.
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Affiliation(s)
| | | | | | - Mahesh S. Majik
- Bio-organic Chemistry Laboratory
- CSIR-National Institute of Oceanography
- Dona-Paula, India
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Kazi TG, Shah F, Afridi HI, Mughal MA, Arain SS, Arain MB. Evaluation of lead levels in biological samples of mentally retarded children in different stages using advanced extraction method. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2013; 36:858-864. [PMID: 23981376 DOI: 10.1016/j.etap.2013.07.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Revised: 07/22/2013] [Accepted: 07/26/2013] [Indexed: 06/02/2023]
Abstract
In present study the lead (Pb) levels has been assessed by analyzing the scalp hair and blood samples of mentally retarded/intellectual disabled (MR/ID) children of both genders, age ranged 3-8 years. For comparative purpose, healthy age matched children were also selected. The cloud point extraction of Pb from digested biological samples was carried out by complexed with ammonium pyrrolidinedithiocarbamate. The complexed analyte was subsequently isolated from the aqueous matrix in the micelles of a non-ionic surfactant (Triton X-114). Dilution of the surfactant-rich phase with acidified ethanol was performed after phase separation, and the Pb content was measured by flame atomic absorption spectrometer. Factors affecting the cloud point extraction were evaluated and optimized. The proposed procedure allowed the determination of lead in certified standard and real samples with detection limits of 0.834μgL(-) and enhancement factor 55. The results were compared with those of healthy children have same age, socioeconomic status and residential areas.
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Affiliation(s)
- Tasneem Gul Kazi
- National Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro 76080, Pakistan.
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41
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Hinwood AL, Callan AC, Ramalingam M, Boyce M, Heyworth J, McCafferty P, Odland JØ. Cadmium, lead and mercury exposure in non smoking pregnant women. ENVIRONMENTAL RESEARCH 2013; 126:118-124. [PMID: 23890969 DOI: 10.1016/j.envres.2013.07.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Revised: 06/20/2013] [Accepted: 07/01/2013] [Indexed: 06/02/2023]
Abstract
Recent literature suggests that exposure to low concentrations of heavy metals may affect both maternal and child health. This study aimed to determine the biological heavy metals concentrations of pregnant women as well as environmental and dietary factors that may influence exposure concentrations. One hundred and seventy three pregnant women were recruited from Western Australia, each providing a sample of blood, first morning void urine, residential soil, dust and drinking water samples. Participants also completed a questionnaire which included a food frequency component. All biological and environmental samples were analysed for heavy metals using ICP-MS. Biological and environmental concentrations of lead and mercury were generally low (Median Pb Drinking Water (DW) 0.04 µg/L; Pb soil <3.0 µg/g; Pb dust 16.5 µg/g; Pb blood 3.67 µg/L; Pb urine 0.55; µg/L Hg DW <0.03; Hg soil <1.0 µg/g; Hg dust <1.0 µg/g; Hg blood 0.46 µg/L; Hg urine <0.40 µg/L). Cadmium concentrations were low in environmental samples (Median CdDW 0.02 µg/L; Cdsoil <0.30 ug/g; Cddust <0.30) but elevated in urine samples (Median 0.55 µg/L, creatinine corrected 0.70 µg/g (range <0.2-7.06 µg/g creatinine) compared with other studies of pregnant women. Predictors of increased biological metals concentrations in regression models for blood cadmium were residing in the Great Southern region of Western Australia and not using iron/folic acid supplements and for urinary cadmium was having lower household annual income. However, these factors explained little of the variation in respective biological metals concentrations. The importance of establishing factors that influence low human exposure concentrations is becoming critical in efforts to reduce exposures and hence the potential for adverse health effects.
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Affiliation(s)
- A L Hinwood
- Centre for Ecosystem Management, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA 6027, Australia.
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Developmental effects of exposures to environmental factors: the Polish Mother and Child Cohort Study. BIOMED RESEARCH INTERNATIONAL 2013; 2013:629716. [PMID: 24191247 PMCID: PMC3804037 DOI: 10.1155/2013/629716] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Accepted: 08/25/2013] [Indexed: 11/21/2022]
Abstract
This paper estimates the effects of exposure to environmental factors, including lead, mercury, environmental tobacco smoke (ETS), and polycyclic aromatic hydrocarbons (PAH), on child psychomotor development. The study population consists of mother-child pairs in the Polish Mother and Child Cohort Study. Prenatal and postnatal exposure to environmental factors was determined from biomarker measurements as follows: for lead exposure—cord blood lead level, for mercury—maternal hair mercury level, for ETS—cotinine level in saliva and urine, and for PAH—1-hydroxypyrene (1-HP) in urine. At the age of 12 (406 subjects) and 24 months (198 subjects) children were assessed using Bayley Scales of Infant and Toddler Development. There were no statistically significant effects of prenatal exposure to mercury or 1-HP on child psychomotor development. After adjusting for potential confounders, adverse effects of prenatal exposure to ETS on motor development (β = −2.6; P = 0.02) and postnatal exposure to ETS on cognitive (β = −0.2; P = 0.05) and motor functions (β = −0.5; P = 0.01) were found. The adverse effect of prenatal lead exposure on cognitive score was of borderline significance (β = −6.2; P = 0.06). The study underscores the importance of policies and public health interventions that aim to reduce prenatal and postnatal exposure to lead and ETS.
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Xiong S, Wang M, Cai D, Li Y, Gu N, Wu Z. Electrochemical Detection of Pb(II) by Glassy Carbon Electrode Modified with Amine-Functionalized Magnetite Nanoparticles. ANAL LETT 2013. [DOI: 10.1080/00032719.2012.747094] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Xie X, Ding G, Cui C, Chen L, Gao Y, Zhou Y, Shi R, Tian Y. The effects of low-level prenatal lead exposure on birth outcomes. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2013; 175:30-4. [PMID: 23321271 DOI: 10.1016/j.envpol.2012.12.013] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2012] [Revised: 12/10/2012] [Accepted: 12/14/2012] [Indexed: 05/02/2023]
Abstract
Exposure to lead early in life may be a risk factor for fetal growth, but little is known about the effects of low-level prenatal lead exposure on birth outcomes. We measured maternal and cord blood lead levels and examined their associations with birth outcomes. Mother-infant pairs (n = 252) were recruited from a rural area located on the south coast of Laizhou Bay between 2010 and 2011. The median levels of maternal and cord blood lead were 3.20 and 2.52 μg/dL, respectively. Increasing maternal blood lead exposure was associated with decreasing birth weight (β = -148.99; 95% CI, -286.33 to -11.66), and a significant negative relationship was found between cord blood lead levels and birth length (β = -0.84; 95% CI, -1.52 to -0.16). Low-level prenatal lead exposure may adversely affect fetal growth. These results may be important for public health and have implications regarding the recommended blood lead levels.
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Affiliation(s)
- Xin Xie
- Department of Environmental Health, School of Public Health, Shanghai Jiao Tong University School of Medicine, 280 South Chongqing Road, Shanghai 200025, China
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Diav-Citrin O. Prenatal exposures associated with neurodevelopmental delay and disabilities. ACTA ACUST UNITED AC 2013; 17:71-84. [PMID: 23362027 DOI: 10.1002/ddrr.1102] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2012] [Accepted: 10/05/2012] [Indexed: 11/09/2022]
Abstract
Neurobehavioral teratology refers to the study of the abnormal development of the structure and the behavioral functions of the central nervous system, which result from exposure to exogenous agents during prenatal development. The focus of this review is the effects of various prenatal exposures on human neurodevelopment. Studies that deal with the adverse effects of infectious agents (rubella, cytomegalovirus, and toxoplasma), teratogenic drugs (e.g., antiepileptic drugs such as phenytoin, valproate, and carbamazepine, coumarin derivatives, and retinoids), alcohol, and other substances of abuse will be reviewed. Additionally, prenatal exposure to industrial or environmental chemicals (e.g., lead, methylmercury, and polycarbonated biphenyls) as well as exposure of the embryo or fetus to high amounts of ionizing radiation will be addressed. Possible mechanisms of selected neurobehavioral teratogens will also be discussed.
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Affiliation(s)
- Orna Diav-Citrin
- The Israeli Teratology Information Service, Department of Child Development & Rehabilitation, Medical Administration, The Health Division, Israel Ministry of Health, P.O. Box 1176, Jerusalem, 91010, Israel.
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Estudio de la evolución de la exposición a plomo en la población infantil española en los últimos 20 años. ¿Un ejemplo no reconocido de «salud en todas las políticas»? GACETA SANITARIA 2013; 27:149-55. [DOI: 10.1016/j.gaceta.2012.01.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2011] [Revised: 01/30/2012] [Accepted: 01/31/2012] [Indexed: 11/20/2022]
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Parajuli RP, Fujiwara T, Umezaki M, Watanabe C. Association of cord blood levels of lead, arsenic, and zinc with neurodevelopmental indicators in newborns: a birth cohort study in Chitwan Valley, Nepal. ENVIRONMENTAL RESEARCH 2013; 121:45-51. [PMID: 23164520 DOI: 10.1016/j.envres.2012.10.010] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Revised: 10/11/2012] [Accepted: 10/23/2012] [Indexed: 05/03/2023]
Abstract
In this study, we aimed to investigate the association between in utero toxic (lead [Pb] and arsenic [As]) and essential element (zinc [Zn]) levels and neurodevelopmental indicators after birth in Chitwan Valley, Nepal. We conducted a hospital-based birth cohort study with 100 pregnant women in Chitwan, Nepal. We measured Pb, As, and Zn concentrations in cord blood. We assessed 100 infants at 1 day after birth, using the Brazelton neonatal behavioral assessment scale, third edition (NBAS III). Multivariate regression was performed to adjust for mother's age, parity, educational level, and body mass index (BMI); family income; and newborn's birth weight, gestational age, and age in hours at the time of NBAS III assessment. Among the 7 clusters of NBAS III, the motor cluster score was inversely associated with the cord blood levels of Pb (coefficient=-2.15, at 95% confidence interval [CI]=-4.27 to -0.03). The cord blood levels of As were inversely associated with the state regulation cluster score (coefficient=-6.71, at 95% CI=-12.17 to -1.24). The cord blood levels of Zn were not associated with NBAS III scores. The cord blood levels of Pb and As, but not Zn, showed significant inverse association with the neurodevelopment of newborns. These results suggest that high levels of Pb or As exposure during the prenatal period may induce retardation during in utero neurodevelopment.
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Affiliation(s)
- Rajendra Prasad Parajuli
- Department of Social Medicine, National Research Institute for Child Health and Development, 2-10-1, Okura, Setagaya-ku, Tokyo 157-8535, Japan.
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Horton LM, Mortensen ME, Iossifova Y, Wald MM, Burgess P. What do we know of childhood exposures to metals (arsenic, cadmium, lead, and mercury) in emerging market countries? Int J Pediatr 2013; 2013:872596. [PMID: 23365584 PMCID: PMC3556434 DOI: 10.1155/2013/872596] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Revised: 11/17/2012] [Accepted: 11/17/2012] [Indexed: 12/28/2022] Open
Abstract
Arsenic, cadmium, lead, and mercury present potential health risks to children who are exposed through inhalation or ingestion. Emerging Market countries experience rapid industrial development that may coincide with the increased release of these metals into the environment. A literature review was conducted for English language articles from the 21st century on pediatric exposures to arsenic, cadmium, lead, and mercury in the International Monetary Fund's (IMF) top 10 Emerging Market countries: Brazil, China, India, Indonesia, Mexico, Poland, Russia, South Korea, Taiwan, and Turkey. Seventy-six peer-reviewed, published studies on pediatric exposure to metals met the inclusion criteria. The reported concentrations of metals in blood and urine from these studies were generally higher than US reference values, and many studies identified adverse health effects associated with metals exposure. Evidence of exposure to metals in the pediatric population of these Emerging Market countries demonstrates a need for interventions to reduce exposure and efforts to establish country-specific reference values through surveillance or biomonitoring. The findings from review of these 10 countries also suggest the need for country-specific public health policies and clinician education in Emerging Markets.
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Affiliation(s)
- Lindsey M. Horton
- Office of Science, National Center for Environmental Health and Agency for Toxic Substances and Disease Registry, 4770 Buford Highway, Atlanta, GA 30341, USA
| | - Mary E. Mortensen
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, 4770 Buford Highway, Atlanta, GA 30341, USA
| | - Yulia Iossifova
- Office of Science, National Center for Environmental Health and Agency for Toxic Substances and Disease Registry, 4770 Buford Highway, Atlanta, GA 30341, USA
| | - Marlena M. Wald
- Office of Science, National Center for Environmental Health and Agency for Toxic Substances and Disease Registry, 4770 Buford Highway, Atlanta, GA 30341, USA
| | - Paula Burgess
- Office of Science, National Center for Environmental Health and Agency for Toxic Substances and Disease Registry, 4770 Buford Highway, Atlanta, GA 30341, USA
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Cao H, Wei M, Chen Z, Huang Y. Dithiocarbamate-capped silver nanoparticles as a resonance light scattering probe for simultaneous detection of lead(ii) ions and cysteine. Analyst 2013; 138:2420-6. [DOI: 10.1039/c3an36868h] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Burbacher TM, Grant KS. Measuring infant memory: Utility of the visual paired-comparison test paradigm for studies in developmental neurotoxicology. Neurotoxicol Teratol 2012; 34:473-80. [PMID: 22750243 PMCID: PMC5420201 DOI: 10.1016/j.ntt.2012.06.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2012] [Revised: 06/15/2012] [Accepted: 06/15/2012] [Indexed: 10/28/2022]
Abstract
The assessment of brain function and behavior in young infants is central to understanding the effects of chemical exposure on central nervous system development. One approach to infant cognitive assessment, based on the direct observation of infant eye movements, is known as the Visual Paired-Comparison task. The Visual Paired-Comparison test methodology uses selective visual attention as a vehicle to study emerging recognition memory skills. The utility of this procedure to study visual recognition memory has been well established in both human and nonhuman primate infants. The primary outcome measure produced by this assessment technique is known as the Novelty Preference Score, reflecting the amount of time the infant spends actively looking at novel rather than familiar test stimuli. Visual recognition memory testing has demonstrated a strong sensitivity to conditions that may place infants at risk for poor developmental outcome (e.g. preterm birth, Down syndrome) and in humans; performance is significantly related to later measures of I.Q. and language competency. This assessment methodology has been successfully applied to the study of neurobehavioral effects after fetal neurotoxicant exposure. Field and laboratory studies have used tests of visual recognition memory to better understand the effects of compounds such as lead, methylmercury and polychlorinated biphenyls on emergent cognitive processing. The Visual Paired-Comparison paradigm and its capacity to measure recognition memory in preverbal infants provides a valid and theoretically meaningful approach to neurobehavioral assessment for studies in developmental toxicology and teratology.
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Affiliation(s)
- Thomas M Burbacher
- Department of Environmental and Occupational Health Sciences, School of Public Health, University of Washington, Seattle, WA 98195, USA.
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