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Lu Y, Chandan AK, Mehta S, Kushwaha M, Kumar A, Ali M, Srivastava A, Ghosh AK, Bose-O'Reilly S, Nambiar L, Kass D. Assessment of prevalence of elevated blood lead levels and risk factors among children and pregnant women in Bihar, India. ENVIRONMENTAL RESEARCH 2024; 259:119528. [PMID: 38960355 DOI: 10.1016/j.envres.2024.119528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 06/09/2024] [Accepted: 06/30/2024] [Indexed: 07/05/2024]
Abstract
BACKGROUND While modeled estimates and studies in contaminated areas indicate high lead exposure among children in Bihar, India, local data on lead exposure in the child population is limited. OBJECTIVES To characterize lead exposure, and assess potential sources of lead exposure among a state-representative sample of children and their pregnant mothers residing in Bihar. METHODS Blood samples were collected from 697 children under five and 55 pregnant women from eight districts in Bihar. Blood lead levels were determined using capillary blood and a portable lead analyzer. Household demographics, home environment, behavior, and nutrition information were collected through computer-assisted personal interviews with primary caregivers. Logistic regression was used to assess associations between potential risk factors and elevated blood lead levels. RESULTS More than 90% of children and 80% of pregnant women reported blood lead levels ≥5 μg/dL. Living near a lead-related industry and pica behavior of eating soil were significantly associated with increased odds of having elevated blood lead levels. Additional risk factors for having a blood level ≥5 μg/dL included the use of skin lightning cream (aOR = 5.11, 95%CI: 1.62, 16.16) and the use of eyeliners (aOR = 2.81, 95%CI: 1.14, 6.93). Having blood lead levels ≥10 μg/dL was also significantly associated with the household member who had an occupation or hobby involving the use of lead (aOR = 1.75, 95%CI: 1.13, 2.72). DISCUSSION Elevated blood lead levels were prevalent among children and pregnant women in Bihar, indicating the urgent need for a comprehensive lead poisoning prevention strategy.
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Affiliation(s)
- Yi Lu
- Vital Strategies, New York, NY, USA
| | | | | | | | - Arun Kumar
- Mahavir Cancer Sansthan & Research Centre, Patna, Bihar, India
| | - Mohammad Ali
- Mahavir Cancer Sansthan & Research Centre, Patna, Bihar, India
| | | | | | - Stephan Bose-O'Reilly
- Pure Earth, New York, NY, USA; Institute and Clinic for Occupational, Social and Environmental Medicine, University Hospital, LMU Munich, Munich, Germany
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Zheng XW, Fang YY, Lin JJ, Luo JJ, Li SJ, Aschner M, Jiang YM. Signal Transduction Associated with Mn-induced Neurological Dysfunction. Biol Trace Elem Res 2024; 202:4158-4169. [PMID: 38155332 DOI: 10.1007/s12011-023-03999-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Accepted: 12/04/2023] [Indexed: 12/30/2023]
Abstract
Manganese (Mn) is a heavy metal that occurs widely in nature and has a vital physiological role in growth and development. However, excessive exposure to Mn can cause neurological damage, especially cognitive dysfunction, such as learning disability and memory loss. Numerous studies on the mechanisms of Mn-induced nervous system damage found that this metal targets a variety of metabolic pathways, for example, endoplasmic reticulum stress, apoptosis, neuroinflammation, cellular signaling pathway changes, and neurotransmitter metabolism interference. This article reviews the latest research progress on multiple signaling pathways related to Mn-induced neurological dysfunction.
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Affiliation(s)
- Xiao-Wei Zheng
- Toxicology Department, School of Public Health, Guangxi Medical University, 22 Shuang-Yong Rd., Nanning, 530021, Guangxi, China
- Key Laboratory of Prevention and Control of Highly Prevalent Diseases in Guangxi Colleges and Universities, Medical University of Guangxi, Nanning, 530021, China
| | - Yuan-Yuan Fang
- Toxicology Department, School of Public Health, Guangxi Medical University, 22 Shuang-Yong Rd., Nanning, 530021, Guangxi, China
- Key Laboratory of Prevention and Control of Highly Prevalent Diseases in Guangxi Colleges and Universities, Medical University of Guangxi, Nanning, 530021, China
| | - Jun-Jie Lin
- Toxicology Department, School of Public Health, Guangxi Medical University, 22 Shuang-Yong Rd., Nanning, 530021, Guangxi, China
- Key Laboratory of Prevention and Control of Highly Prevalent Diseases in Guangxi Colleges and Universities, Medical University of Guangxi, Nanning, 530021, China
| | - Jing-Jing Luo
- Toxicology Department, School of Public Health, Guangxi Medical University, 22 Shuang-Yong Rd., Nanning, 530021, Guangxi, China
- Key Laboratory of Prevention and Control of Highly Prevalent Diseases in Guangxi Colleges and Universities, Medical University of Guangxi, Nanning, 530021, China
| | - Shao-Jun Li
- Toxicology Department, School of Public Health, Guangxi Medical University, 22 Shuang-Yong Rd., Nanning, 530021, Guangxi, China.
- Key Laboratory of Prevention and Control of Highly Prevalent Diseases in Guangxi Colleges and Universities, Medical University of Guangxi, Nanning, 530021, China.
| | - Michael Aschner
- The Department of Molecular Pharmacology at Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - Yue-Ming Jiang
- Toxicology Department, School of Public Health, Guangxi Medical University, 22 Shuang-Yong Rd., Nanning, 530021, Guangxi, China.
- Key Laboratory of Prevention and Control of Highly Prevalent Diseases in Guangxi Colleges and Universities, Medical University of Guangxi, Nanning, 530021, China.
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3
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Brown CW, Goldfine CE, Allan-Blitz LT, Erickson TB. Occupational, environmental, and toxicological health risks of mining metals for lithium-ion batteries: a narrative review of the Pubmed database. J Occup Med Toxicol 2024; 19:35. [PMID: 39192280 DOI: 10.1186/s12995-024-00433-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2024] [Accepted: 08/09/2024] [Indexed: 08/29/2024] Open
Abstract
BACKGROUND The global market for lithium-ion batteries (LIBs) is growing exponentially, resulting in an increase in mining activities for the metals needed for manufacturing LIBs. Cobalt, lithium, manganese, and nickel are four of the metals most used in the construction of LIBs, and each has known toxicological risks associated with exposure. Mining for these metals poses potential human health risks via occupational and environmental exposures; however, there is a paucity of data surrounding the risks of increasing mining activity. The objective of this review was to characterize these risks. METHODS We conducted a review of the literature via a systematic search of the PubMed database on the health effects of mining for cobalt, lithium, manganese, and nickel. We included articles that (1) reported original research, (2) reported outcomes directly related to human health, (3) assessed exposure to mining for cobalt, lithium, manganese, or nickel, and (4) had an available English translation. We excluded all other articles. Our search identified 183 relevant articles. RESULTS Toxicological hazards were reported in 110 studies. Exposure to cobalt and nickel mining were most associated with respiratory toxicity, while exposure to manganese mining was most associated with neurologic toxicity. Notably, no articles were identified that assessed lithium toxicity associated with mining exposure. Traumatic hazards were reported in six studies. Three articles reported infectious disease hazards, while six studies reported effects on mental health. Several studies reported increased health risks in children compared to adults. CONCLUSIONS The results of this review suggest that occupational and environmental exposure to mining metals used in LIBs presents significant risks to human health that result in both acute and chronic toxicities. Further research is needed to better characterize these risks, particularly regarding lithium mining.
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Affiliation(s)
- Connor W Brown
- Department of Emergency Medicine, Brigham and Women's Hospital, Boston, MA, USA.
- Division of Medical Toxicology, Mass General Brigham, Boston, MA, USA.
| | - Charlotte E Goldfine
- Department of Emergency Medicine, Brigham and Women's Hospital, Boston, MA, USA
- Division of Medical Toxicology, Mass General Brigham, Boston, MA, USA
| | - Lao-Tzu Allan-Blitz
- Division of Global Health Equity, Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Timothy B Erickson
- Department of Emergency Medicine, Brigham and Women's Hospital, Boston, MA, USA
- Division of Medical Toxicology, Mass General Brigham, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
- Harvard Humanitarian Initiative, Boston, MA, USA
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4
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Naspolini NF, Vanzele PAR, Tótolo P, Schüroff PA, Fatori D, Vicentini Neto SA, Barata-Silva C, dos Santos LMG, Fujita A, Passos-Bueno MR, Beltrão-Braga PCB, Campos AC, Carvalho ACPLF, Polanczyk GV, Moreira JC, Taddei CR. Lead contamination in human milk affects infants' language trajectory: results from a prospective cohort study. Front Public Health 2024; 12:1450570. [PMID: 39193201 PMCID: PMC11347280 DOI: 10.3389/fpubh.2024.1450570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2024] [Accepted: 08/01/2024] [Indexed: 08/29/2024] Open
Abstract
Infants growing up in low- and middle-income countries are at increased risk of suffering adverse childhood experiences, including exposure to environmental pollution and lack of cognitive stimulation. In this study, we aimed to examine the levels of metals in the human milk of women living in São Paulo City, Brazil, and determine the effects on infants' neurodevelopment. For such, a total of 185 human milk samples were analyzed for arsenic (As), lead (Pb), mercury (Hg), and cadmium (Cd) using inductively coupled plasma mass spectrometry (ICP-MS). We applied the Bayley scales of infant and toddler development Third Edition (Bayley-III) to assess developmental milestones. In our analysis, we found a mean (standard deviation) concentration of As in human milk equal to 2.76 (4.09) μg L-1, followed by Pb 2.09 (5.36) and Hg 1.96 (6.68). Cd was not detected. We observed that infants exposed to Pb presented language trajectories lower than non-exposed infants (β = -0.413; 95% CI -0.653, -0.173) after adjustment for infant age, maternal education, socioeconomic status, infant sex, and sample weights. Our results report As, Pb, and Hg contamination in human milk, and that infant exposure to Pb decreased infants' language development. These results evidence maternal-child environmental exposure and its detrimental impact on infants' health.
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Affiliation(s)
| | - Pedro A. R. Vanzele
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Pedro Tótolo
- Institute of Mathematics and Statistics, University of São Paulo, São Paulo, Brazil
| | | | - Daniel Fatori
- Department of Psychiatry, Faculdade de Medicina FMUSP, University of São Paulo, São Paulo, Brazil
- Laboratorio de Psicopatologia e Terapeutica Psiquiatrica LIM-23, Instituto de Psiquiatria, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Santos Alves Vicentini Neto
- Department of Chemistry, National Institute for Quality Control in Health (INCQS), Oswaldo Cruz Foundation (INCQS/Fiocruz), Rio de Janeiro, Brazil
| | - Cristiane Barata-Silva
- Department of Chemistry, National Institute for Quality Control in Health (INCQS), Oswaldo Cruz Foundation (INCQS/Fiocruz), Rio de Janeiro, Brazil
| | - Lisia Maria Gobbo dos Santos
- Department of Chemistry, National Institute for Quality Control in Health (INCQS), Oswaldo Cruz Foundation (INCQS/Fiocruz), Rio de Janeiro, Brazil
| | - André Fujita
- Institute of Mathematics and Statistics, University of São Paulo, São Paulo, Brazil
- Division of Network AI Statistics, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - Maria Rita Passos-Bueno
- Department of Genetics and Evolutionary Biology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil
| | - Patricia C. B. Beltrão-Braga
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
- Institut Pasteur de São Paulo, São Paulo, Brazil
| | - Alline C. Campos
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - André C. P. L. F. Carvalho
- Department of Applied Mathematics and Statistics, Institute of Mathematics and Computer Sciences, University of São Paulo, Sao Carlos, Brazil
| | - Guilherme V. Polanczyk
- Department of Psychiatry, Faculdade de Medicina FMUSP, University of São Paulo, São Paulo, Brazil
| | - Josino Costa Moreira
- Department of Chemistry, National Institute for Quality Control in Health (INCQS), Oswaldo Cruz Foundation (INCQS/Fiocruz), Rio de Janeiro, Brazil
| | - Carla R. Taddei
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
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Živančević K, Baralić K, Vukelić D, Marić Đ, Kotur-Stevuljević J, Ivanišević J, Savić M, Batinić B, Janković R, Djordjevic AB, Miljaković EA, Ćurčić M, Bulat Z, Antonijević B, Đukić-Ćosić D. Neurotoxic effects of low dose ranges of environmental metal mixture in a rat model: The benchmark approach. ENVIRONMENTAL RESEARCH 2024; 252:118680. [PMID: 38561120 DOI: 10.1016/j.envres.2024.118680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 03/02/2024] [Accepted: 03/10/2024] [Indexed: 04/04/2024]
Abstract
Metals exert detrimental effects on various systems within the body, including the nervous system. Nevertheless, the dose-response relationship concerning the administration of low doses of metal mixtures remains inadequately explored. The assessment of neurotoxic effects of lead, cadmium, mercury, and arsenic mixture (MIX) administered at low dose ranges, was conducted using an in vivo approach. A subacute study was conducted on a rat model consisting of a control and five treatment groups subjected to oral exposure with gradually increasing doses (from MIX 1 to MIX 5). The results indicated that behavioural patterns in an already developed nervous system displayed a reduced susceptibility to the metal mixture exposure with tendency of higher doses to alter short term memory. However, the vulnerability of the mature brain to even minimal amounts of the investigated metal mixture was evident, particularly in the context of oxidative stress. Moreover, the study highlights superoxide dismutase's sensitivity as an early-stage neurotoxicity marker, as indicated by dose-dependent induction of oxidative stress in the brain revealed through Benchmark analysis. The narrowest Benchmark Dose Interval (BMDI) for superoxide dismutase (SOD) activity (1e-06 - 3.18e-05 mg As/kg b.w./day) indicates that arsenic may dictate the alterations in SOD activity when co-exposed with the other examined metals. The predicted Benchmark doses for oxidative stress parameters were very low, supporting "no-threshold" concept. Histopathological alterations were most severe in the groups treated with higher doses of metal mixture. Similarly, the brain acetylcholinesterase (AChE) activity demonstrated a dose-dependent decrease significant in higher doses, while BMDI suggested Cd as the main contributor in the examined metal mixture. These findings imply varying susceptibility of neurotoxic endpoints to different doses of environmentally relevant metal mixtures, advocating for risk assessment and regulatory measures to address metal pollution and enhance remediation strategies.
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Affiliation(s)
- Katarina Živančević
- Department of Toxicology "Akademik Danilo Soldatović", Toxicological Risk Assessment Center, University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221, Belgrade, Serbia; University of Belgrade - Faculty of Biology, Institute of Physiology and Biochemistry "Ivan Djaja", Department of General Physiology and Biophysics, Center for Laser Microscopy, Studentski trg 16, 11158, Belgrade, Serbia.
| | - Katarina Baralić
- Department of Toxicology "Akademik Danilo Soldatović", Toxicological Risk Assessment Center, University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221, Belgrade, Serbia
| | - Dragana Vukelić
- Department of Toxicology "Akademik Danilo Soldatović", Toxicological Risk Assessment Center, University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221, Belgrade, Serbia
| | - Đurđica Marić
- Department of Toxicology "Akademik Danilo Soldatović", Toxicological Risk Assessment Center, University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221, Belgrade, Serbia
| | - Jelena Kotur-Stevuljević
- University of Belgrade, Faculty of Pharmacy, Department of Medical Biochemistry, Vojvode Stepe 450, 11221, Belgrade, Serbia
| | - Jasmina Ivanišević
- University of Belgrade, Faculty of Pharmacy, Department of Medical Biochemistry, Vojvode Stepe 450, 11221, Belgrade, Serbia
| | - Miroslav Savić
- University of Belgrade, Faculty of Pharmacy, Department of Pharmacology, Vojvode Stepe 450, 11221, Belgrade, Serbia
| | - Bojan Batinić
- University of Belgrade, Faculty of Pharmacy, Department of Physiology, Vojvode Stepe 450, 11221, Belgrade, Serbia
| | - Radmila Janković
- University of Belgrade, Faculty of Medicine, Institute of Pathology, dr Subotića 1, 11000, Belgrade, Serbia
| | - Aleksandra Buha Djordjevic
- Department of Toxicology "Akademik Danilo Soldatović", Toxicological Risk Assessment Center, University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221, Belgrade, Serbia
| | - Evica Antonijević Miljaković
- Department of Toxicology "Akademik Danilo Soldatović", Toxicological Risk Assessment Center, University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221, Belgrade, Serbia
| | - Marijana Ćurčić
- Department of Toxicology "Akademik Danilo Soldatović", Toxicological Risk Assessment Center, University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221, Belgrade, Serbia
| | - Zorica Bulat
- Department of Toxicology "Akademik Danilo Soldatović", Toxicological Risk Assessment Center, University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221, Belgrade, Serbia
| | - Biljana Antonijević
- Department of Toxicology "Akademik Danilo Soldatović", Toxicological Risk Assessment Center, University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221, Belgrade, Serbia
| | - Danijela Đukić-Ćosić
- Department of Toxicology "Akademik Danilo Soldatović", Toxicological Risk Assessment Center, University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221, Belgrade, Serbia
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6
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Xiao C, Lai D. Impact of oxidative stress induced by heavy metals on ovarian function. J Appl Toxicol 2024. [PMID: 38938153 DOI: 10.1002/jat.4664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 06/09/2024] [Accepted: 06/17/2024] [Indexed: 06/29/2024]
Abstract
As a crucial organ of the female reproductive system, the ovary has both reproductive and endocrine functions. Oxidative stress refers to an increase in intracellular reactive oxygen species (ROS), which play a role in the normal physiological activity of the ovary. However, excessive ROS can cause damage to the ovary. With the advancement of human industrial activities, heavy metal pollution has become increasingly severe. Heavy metals cause oxidative stress through both direct and indirect mechanisms, leading to changes in signal transduction pathways that damage the ovaries. This review aims to outline the adverse effects of oxidative stress on the ovaries triggered by heavy metals such as copper, arsenic, cadmium, mercury, and lead. The detrimental effects of heavy metals on ovaries include follicular atresia and decreased estrogen production in experimental animals, and they also cause premature ovarian insufficiency in women. Additionally, this review discusses the role of antioxidants, provides some treatment methods, summarizes the limitations of current research, and offers perspectives for future research directions.
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Affiliation(s)
- Chengqi Xiao
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China
| | - Dongmei Lai
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China
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7
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Milanković V, Tasić T, Leskovac A, Petrović S, Mitić M, Lazarević-Pašti T, Novković M, Potkonjak N. Metals on the Menu-Analyzing the Presence, Importance, and Consequences. Foods 2024; 13:1890. [PMID: 38928831 PMCID: PMC11203375 DOI: 10.3390/foods13121890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 06/11/2024] [Accepted: 06/14/2024] [Indexed: 06/28/2024] Open
Abstract
Metals are integral components of the natural environment, and their presence in the food supply is inevitable and complex. While essential metals such as sodium, potassium, magnesium, calcium, iron, zinc, and copper are crucial for various physiological functions and must be consumed through the diet, others, like lead, mercury, and cadmium, are toxic even at low concentrations and pose serious health risks. This study comprehensively analyzes the presence, importance, and consequences of metals in the food chain. We explore the pathways through which metals enter the food supply, their distribution across different food types, and the associated health implications. By examining current regulatory standards for maximum allowable levels of various metals, we highlight the importance of ensuring food safety and protecting public health. Furthermore, this research underscores the need for continuous monitoring and management of metal content in food, especially as global agricultural and food production practices evolve. Our findings aim to inform dietary recommendations, food fortification strategies, and regulatory policies, ultimately contributing to safer and more nutritionally balanced diets.
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Affiliation(s)
- Vedran Milanković
- VINČA Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, Mike Petrovica Alasa 12-14, 11000 Belgrade, Serbia; (V.M.); (T.T.); (A.L.); (S.P.); (M.M.); (T.L.-P.)
| | - Tamara Tasić
- VINČA Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, Mike Petrovica Alasa 12-14, 11000 Belgrade, Serbia; (V.M.); (T.T.); (A.L.); (S.P.); (M.M.); (T.L.-P.)
| | - Andreja Leskovac
- VINČA Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, Mike Petrovica Alasa 12-14, 11000 Belgrade, Serbia; (V.M.); (T.T.); (A.L.); (S.P.); (M.M.); (T.L.-P.)
| | - Sandra Petrović
- VINČA Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, Mike Petrovica Alasa 12-14, 11000 Belgrade, Serbia; (V.M.); (T.T.); (A.L.); (S.P.); (M.M.); (T.L.-P.)
| | - Miloš Mitić
- VINČA Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, Mike Petrovica Alasa 12-14, 11000 Belgrade, Serbia; (V.M.); (T.T.); (A.L.); (S.P.); (M.M.); (T.L.-P.)
| | - Tamara Lazarević-Pašti
- VINČA Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, Mike Petrovica Alasa 12-14, 11000 Belgrade, Serbia; (V.M.); (T.T.); (A.L.); (S.P.); (M.M.); (T.L.-P.)
| | - Mirjana Novković
- Group for Muscle Cellular and Molecular Biology, Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11000 Belgrade, Serbia;
| | - Nebojša Potkonjak
- VINČA Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, Mike Petrovica Alasa 12-14, 11000 Belgrade, Serbia; (V.M.); (T.T.); (A.L.); (S.P.); (M.M.); (T.L.-P.)
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8
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Lautarescu A, Bonthrone AF, Bos B, Barratt B, Counsell SJ. Advances in fetal and neonatal neuroimaging and everyday exposures. Pediatr Res 2024:10.1038/s41390-024-03294-1. [PMID: 38877283 DOI: 10.1038/s41390-024-03294-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 04/25/2024] [Accepted: 04/29/2024] [Indexed: 06/16/2024]
Abstract
The complex, tightly regulated process of prenatal brain development may be adversely affected by "everyday exposures" such as stress and environmental pollutants. Researchers are only just beginning to understand the neural sequelae of such exposures, with advances in fetal and neonatal neuroimaging elucidating structural, microstructural, and functional correlates in the developing brain. This narrative review discusses the wide-ranging literature investigating the influence of parental stress on fetal and neonatal brain development as well as emerging literature assessing the impact of exposure to environmental toxicants such as lead and air pollution. These 'everyday exposures' can co-occur with other stressors such as social and financial deprivation, and therefore we include a brief discussion of neuroimaging studies assessing the effect of social disadvantage. Increased exposure to prenatal stressors is associated with alterations in the brain structure, microstructure and function, with some evidence these associations are moderated by factors such as infant sex. However, most studies examine only single exposures and the literature on the relationship between in utero exposure to pollutants and fetal or neonatal brain development is sparse. Large cohort studies are required that include evaluation of multiple co-occurring exposures in order to fully characterize their impact on early brain development. IMPACT: Increased prenatal exposure to parental stress and is associated with altered functional, macro and microstructural fetal and neonatal brain development. Exposure to air pollution and lead may also alter brain development in the fetal and neonatal period. Further research is needed to investigate the effect of multiple co-occurring exposures, including stress, environmental toxicants, and socioeconomic deprivation on early brain development.
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Affiliation(s)
- Alexandra Lautarescu
- Department of Perinatal Imaging and Health, Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, UK
- Department of Psychology, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Alexandra F Bonthrone
- Department of Perinatal Imaging and Health, Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, UK
| | - Brendan Bos
- MRC Centre for Environment and Health, Imperial College London, London, UK
| | - Ben Barratt
- MRC Centre for Environment and Health, Imperial College London, London, UK
| | - Serena J Counsell
- Department of Perinatal Imaging and Health, Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, UK.
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Kurushi R, Omer M, Hussein O, Ali M, Ibn Auf A. Synergistic Interventions for Silencing Oppositional Defiant Disorder and Dyslexia in a Child With Attention-Deficit/Hyperactivity Disorder: A Case Report From Albania. Cureus 2024; 16:e61753. [PMID: 38975431 PMCID: PMC11227429 DOI: 10.7759/cureus.61753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/05/2024] [Indexed: 07/09/2024] Open
Abstract
To the best of the authors' knowledge, this article is the first of its kind in Albania and neighboring countries to investigate the transformative synergistic intervention approach through cognitive behavioral therapy, parent-child interaction therapy (PCIT), and heavy metal detoxification on a child with attention-deficit/hyperactivity disorder (ADHD) and comorbid oppositional defiant disorder (ODD) and dyslexia. The limited mental health awareness in Albania, particularly regarding PCIT and similar treatments, highlights the importance of the applicability and adaptability of such interventions. This study suggests that the rapid management of comorbidities in ADHD, such as ODD and dyslexia, is better achieved by a combined intervention approach and by investigating the biological aspects. Further research with a large sample size is needed to assess the long-term sustainability and scalability of such an approach.
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Affiliation(s)
- Rigels Kurushi
- Medicine, Sulaiman Alrajhi University, Al Bukayriyah, SAU
- Executive Department, ADHD Hyperactivity Albania Foundation, Tirana, ALB
| | - Mohamed Omer
- Medicine, Sulaiman Alrajhi University, Al Bukayriyah, SAU
| | - Omer Hussein
- Psychiatry, Prince Sultan Military Medical City, Riyadh, SAU
| | - Majid Ali
- Medicine, Sulaiman Alrajhi University, Al Bukayriyah, SAU
| | - Anas Ibn Auf
- Psychiatry, Erada and Mental Health Complex, Taif, SAU
- Psychiatry, Eastern Sudan College for Medical Sciences and Technology, Port Sudan, SDN
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Agudelo N, Cuadro A, Barg G, Queirolo EI, Mañay N, Kordas K. Blood lead levels and math learning in first year of school: An association for concern. ENVIRONMENTAL RESEARCH 2024; 246:118091. [PMID: 38215927 PMCID: PMC10947836 DOI: 10.1016/j.envres.2023.118091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/29/2023] [Accepted: 12/30/2023] [Indexed: 01/14/2024]
Abstract
Lead is a well-known neurotoxicant that continues to affect children's cognition and behavior. With the aim to examine the associations of lead exposure with math performance in children at the beginning of formal schooling, we conducted a cross-sectional study of first-grade students from 11 schools in Montevideo, Uruguay. Math abilities were assessed with tests from the Batería III Woodcock-Muñoz (Calculation, Math Facts Fluency, Applied Problems, Math Calculation Skills and Broad Maths). Separate generalized linear models (GLM) tested the association of blood lead level (BLL) and each math ability, adjusting for key covariates including age and sex, maternal education, household assets and Home Observation for Measurement of the Environment Inventory score. In a complete-case of 252 first-grade students (age 67-105 months, 45% girls), mean ± SD blood lead level was 4.0 ± 2.2 μg/dL. Covariate-adjusted logistic models were used to examine the association between childhood BLLs and the odds of low math performance. BLL was negatively associated with scores on the Calculation test (β (95% CI): -0.18 (-0.33, -0.03)), Math Calculation Skills (-1.26 (-2.26, -0.25)), and Broad Maths cluster scores (-0.88 (-1.55, -0.21)). Similarly, performance on the Calculation test, as well as cluster scores for Broad Maths and Math Calculation Skills differed between children with BLLs <5 and ≥ 5 μg/dL (p < 0.01), being lower in children with higher BLLs. Finally, considering the likelihood of low test performance, each 1 μg/dL higher B-Pb was related to 27% higher likelihood for Maths Facts Fluency, 30% for Broad Math and Math Calculation Skills, and 31% for Calculation (p < 0.05). These results suggest that lead exposure is negatively associated with several basic skills that are key to math learning. These findings further suggest that the cognitive deficits related to lead exposure impact student achievement at very early stages of formal education.
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Affiliation(s)
- Natalia Agudelo
- Department of Neuroscience and Learning, Faculty of Health Sciences, Catholic University of Uruguay, Montevideo, Uruguay.
| | - Ariel Cuadro
- Department of Neuroscience and Learning, Faculty of Health Sciences, Catholic University of Uruguay, Montevideo, Uruguay.
| | - Gabriel Barg
- Department of Neuroscience and Learning, Faculty of Health Sciences, Catholic University of Uruguay, Montevideo, Uruguay.
| | - Elena I Queirolo
- Department of Neuroscience and Learning, Faculty of Health Sciences, Catholic University of Uruguay, Montevideo, Uruguay.
| | - Nelly Mañay
- Department of Toxicology, Faculty of Chemistry, University of the Republic of Uruguay (UDELAR), Montevideo, Uruguay.
| | - Katarzyna Kordas
- Department of Epidemiology and Environmental Health, University at Buffalo, Buffalo, NY, 14214, USA.
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Boffetta P, Sambati L, Sassano M. Systematic review of studies on exposure to arsenic in drinking water and cognitive and neurobehavioral effects. Crit Rev Toxicol 2024; 54:174-193. [PMID: 38533692 DOI: 10.1080/10408444.2023.2297751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 12/14/2023] [Indexed: 03/28/2024]
Abstract
An association between exposure to arsenic (As) and neurologic and behavioral effects has been reported in some studies, but no systematic review is available of the evidence linking As in drinking water and neurobehavioral effects after consideration of study quality and potential confounding, with focus on low-level circumstances of exposure. We conducted a systematic review and reported it in compliance with the Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) guidelines, through a search of the databases PubMed, Web of Science, Scopus, and Embase. We included in the review the studies reporting results based on exposure from drinking water in humans. Endpoints were heterogeneous across studies, so we classified them into eight broad domains and developed an ad-hoc system to evaluate their methodological quality, based on three tiers. It was not possible to conduct meta-analysis because of the heterogeneity in exposure assessment and in the definition and assessment of outcomes. The search identified 18,518 articles. After elimination of duplicates and irrelevant articles, we retained 106 articles which reported results on As exposure and neurobehavioral effects, of which 22 reported risk estimates from exposure in drinking water (six among adults and 16 among children). None of the studies was conducted blindly. Among the studies in adults, two, which were conducted in highly exposed populations, were classified as high quality. These two studies were broadly consistent in reporting an association between exposure to As and decline in cognitive function; however, they provide no evidence of an association for exposure below 75 μg/L. The four lower-quality studies were based on populations with low exposure; these studies reported associations with inconsistent outcomes, few of which remained statistically significant after adjustment for multiple comparisons. Among the five high-quality studies of children, one reported an association between As in drinking water and intellectual function, whereas none of the other studies reported an association with different neurobehavioral indicators, after adjusting for potential confounders and multiple comparisons. Out of seven intermediate-quality studies, three reported an association with cognitive function or other outcomes; but sources of bias were not adequately controlled. The remaining studies were negative. The four low-quality studies did not contribute to the overall evidence because of methodological limitations. Our assessment of the available literature showed a lack of evidence for a causal association between exposure to As in drinking water and neurobehavioral effects. To clarify whether such an association exists, further studies prospectively evaluating changes in both the concentration of As in drinking water during the life course, and neurobehavioral outcomes, as well as appropriately controlling for potential confounders, are needed.
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Affiliation(s)
- Paolo Boffetta
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
- Stony Brook Cancer Center, Stony Brook University, Stony Brook, NY, USA
- Department of Family, Population and Preventive Medicine, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, USA
| | - Luisa Sambati
- IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy
| | - Michele Sassano
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
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Chbihi K, Menouni A, Hardy E, Creta M, Grova N, Van Nieuwenhuyse A, Godderis L, El Jaafari S, Duca RC. Exposure of children to brominated flame retardants and heavy metals in Morocco: Urine and blood levels in association with global cytosine and adenine methylation. ENVIRONMENT INTERNATIONAL 2024; 183:108409. [PMID: 38185044 DOI: 10.1016/j.envint.2023.108409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 11/30/2023] [Accepted: 12/24/2023] [Indexed: 01/09/2024]
Abstract
Persistent pollutants, namely brominated flame retardants (BFRs) and heavy metals, are compounds that are added to a wide range of products and materials for preventing ignition, increasing the functionality of materials or improving their performance, e.g. electric conductivity. The exposure of children might consequently be inferred, through indoor dust and hand-to-mouth or toy-chewing behaviors. The current study is aimed at assessing the exposure of Moroccan children to BFRs and heavy metal elements, and evaluating their associations with global DNA methylation. First, parents responded to a questionnaire pertaining to children's lifestyle, then blood and urine samples were collected from (n = 93) children aged between 5 and 11 years for biomonitoring and DNA methylation analysis. BFRs were detected in 54.84% of samples with a median concentration of 0.01 nmol/mL (range: 0.004-0.051 nmol/mL) while metal elements were detected in more than 90% of samples. BFRs showed no variations with global DNA methylation, unlike metal elements, which revealed significant associations with global DNA methylation markers, namely 5-mC, 5-hmC and N⁶-mA levels. Moroccan children may be exposed to flame retardants and heavy metals through several routes. Further research is required to assess the exposure and the health impacts of environmental pollutants and ultimately protect the Moroccan population by the prevention of adverse health effects.
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Affiliation(s)
- Kaoutar Chbihi
- Cluster of Competences on Health & Environment, Moulay Ismail University, Meknes 50000, Morocco; Center for Environment & Health, Department of Public Health and Primary Care, Faculty of Medicine, Katholieke Universiteit of Leuven, Leuven 3000, Belgium; Unit of Environmental Hygiene and Human Biological Monitoring, Department of Health Protection, Laboratoire National de Santé (LNS), Dudelange L-3555, Luxembourg.
| | - Aziza Menouni
- Cluster of Competences on Health & Environment, Moulay Ismail University, Meknes 50000, Morocco; Center for Environment & Health, Department of Public Health and Primary Care, Faculty of Medicine, Katholieke Universiteit of Leuven, Leuven 3000, Belgium
| | - Emilie Hardy
- Unit of Environmental Hygiene and Human Biological Monitoring, Department of Health Protection, Laboratoire National de Santé (LNS), Dudelange L-3555, Luxembourg
| | - Matteo Creta
- Center for Environment & Health, Department of Public Health and Primary Care, Faculty of Medicine, Katholieke Universiteit of Leuven, Leuven 3000, Belgium; Unit of Environmental Hygiene and Human Biological Monitoring, Department of Health Protection, Laboratoire National de Santé (LNS), Dudelange L-3555, Luxembourg
| | - Nathalie Grova
- Immune Endocrine Epigenetics Research Group, Department of Infection and Immunity-Luxembourg Institute of Health, Esch-Sur-Alzette L-4354, Luxembourg; UMR Inserm 1256 nGERE, Nutrition-Génétique et exposition aux risques environnementaux, Institute of Medical Research (Pôle BMS) - University of Lorraine, B.P. 184, Nancy 54511, France
| | - An Van Nieuwenhuyse
- Center for Environment & Health, Department of Public Health and Primary Care, Faculty of Medicine, Katholieke Universiteit of Leuven, Leuven 3000, Belgium; Department of Health Protection, Laboratoire National de Santé (LNS), Dudelange L-3555, Luxembourg
| | - Lode Godderis
- Center for Environment & Health, Department of Public Health and Primary Care, Faculty of Medicine, Katholieke Universiteit of Leuven, Leuven 3000, Belgium; IDEWE, External Service for Prevention and Protection at Work, Heverlee 3001, Belgium
| | - Samir El Jaafari
- Cluster of Competences on Health & Environment, Moulay Ismail University, Meknes 50000, Morocco
| | - Radu-Corneliu Duca
- Center for Environment & Health, Department of Public Health and Primary Care, Faculty of Medicine, Katholieke Universiteit of Leuven, Leuven 3000, Belgium; Unit of Environmental Hygiene and Human Biological Monitoring, Department of Health Protection, Laboratoire National de Santé (LNS), Dudelange L-3555, Luxembourg.
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13
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Debbag R, Torres JR, Falleiros-Arlant LH, Avila-Aguero ML, Brea-del Castillo J, Gentile A, Saez-Llorens X, Mascarenas A, Munoz FM, Torres JP, Vazquez L, Safadi MA, Espinal C, Ulloa-Gutierrez R, Pujadas M, Lopez P, López-Medina E, Ramilo O. Are the first 1,000 days of life a neglected vital period to prevent the impact on maternal and infant morbimortality of infectious diseases in Latin America? Proceedings of a workshop of experts from the Latin American Pediatric Infectious Diseases Society, SLIPE. Front Pediatr 2023; 11:1297177. [PMID: 38098643 PMCID: PMC10720332 DOI: 10.3389/fped.2023.1297177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 11/15/2023] [Indexed: 12/17/2023] Open
Abstract
While the first 1,000 days of life are a critical period in child's development, limited information on the main determinants affecting this period in the Latin America and the Caribbean (LAC) region is available. Therefore, the Latin American Pediatric Infectious Diseases Society (SLIPE) held an ad hoc workshop in May 2022 with an expert panel designed to analyze the main factors impacting the development of childhood in the region during this period and the main causes of maternal infant morbimortality. The aim was to identify priorities, generate recommendations, and advise practical actions to improve this situation. Considerations were made about the challenges involved in bridging the gap that separates the region from more developed countries regarding an optimal early childhood and maternal care. Extensive discussion was conducted to reach consensus recommendations on general strategies intended to reduce maternal and infant mortality associated with infections and immune-preventable diseases during the first 1,000 days of life in LAC.
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Affiliation(s)
- Roberto Debbag
- President of Sociedad Latinoamericana de Infectología Pediátrica, SLIPE, Buenos Aires, Argentina
| | - Jaime R. Torres
- Infectious Diseases Section, Tropical Medicine Institute, Universidad Central De Venezuela, Caracas, Venezuela
| | - Luiza H. Falleiros-Arlant
- Department of Children’s Health, Faculdade De Medicina, Universidade Metropolitana De Santos, Santos, Brazil
| | - Maria L. Avila-Aguero
- Infectious Diseases Service, Hospital Nacional De Niños “Dr. Carlos Sáenz Herrera”, Caja Costarricense De Seguro Social (CCSS), San José, Costa Rica
- Affiliated Researcher Center for Infectious Disease Modeling and Analysis (CIDMA) at Yale University, New Haven, CT, United States
| | - Jose Brea-del Castillo
- Associated Researcher, Investigador Asociado Hospital Dr. Hugo Mendoza, Santo Domingo, Republic Dominicana
| | - Angela Gentile
- Epidemiology Department, Hospital de Niños “Ricardo Gutiérrez”, Buenos Aires University, Buenos Aires, Argentina
| | - Xavier Saez-Llorens
- Head of Infectious Diseases and Director of Clinical Research, Hospital del Niño “Dr. José Renán Esquivel”, Panama City, Panama
| | - Abiel Mascarenas
- Department of Pediatric Infectious Diseases, Hospital Universitario “José E. Gonzalez”, Universidad Autónoma De Nuevo León, Nuevo Leon, México
| | - Flor M. Munoz
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Juan P. Torres
- Department of Pediatrics and Children Surgery, Universidad de Chile, Santiago, Chile
| | - Liliana Vazquez
- Pediatric Infectious Diseases, Clinica y Maternidad Suizo Argentina, Sanatorio Finochietto, Buenos Aires, Argentina
| | - Marco A. Safadi
- Department of Pediatrics, Faculda de de Ciências Médicas da Santa Casa de São Paulo, Sao Paulo, Brazil
| | - Carlos Espinal
- Global Health Consortium, Robert Stempel College of Public Health & Social Work, Florida International University, Miami, FL, United States
| | - Rolando Ulloa-Gutierrez
- Infectious Diseases Service, Hospital Nacional De Niños “Dr. Carlos Sáenz Herrera”, Caja Costarricense De Seguro Social (CCSS), San José, Costa Rica
| | - Monica Pujadas
- Department of Epidemiology and Pediatric Infectious Diseases, Centro Hospitalario Pereira Rossell, Faculty of Medicine, Universidad de la República, Montevideo, Uruguay
| | - Pio Lopez
- Department of Pediatrics, Hospital Universitario del Valle, Cali, Colombia
| | - Eduardo López-Medina
- Centro de Estudios en Infectología Pediátrica CEIP, Department of Pediatrics, Universidad del Valle, Clinica Imbanaco Grupo Quironsalud, Cali, Colombia
| | - Octavio Ramilo
- Department of Infectious Diseases, St. Jude Children’s Research Hospital, Memphis, TN, United States
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14
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Du Z, Tian Z, Yin Y, Wei J, Mu Y, Cai J, Song Z, Cen K. Bioavailability-based risk assessment of various heavy metals via multi-exposure routes for children and teenagers in Beijing, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:114985-115002. [PMID: 37878177 DOI: 10.1007/s11356-023-30436-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 10/09/2023] [Indexed: 10/26/2023]
Abstract
Assessing the health risks of sensitive population, such as children and teenagers, through multiple exposure routes (MERs) such as ingestion, inhalation, and dermal contact is critical for policy creation that protects or reduces exposure to pollutants for all populations. Heavy metal (HM) contents in food and environmental media in Beijing, capital of China, were collected. Furthermore, on the basis of considering the bioavailability of HMs, we evaluated the multiple environmental routes and health risks to HMs in children and teenagers of eight age groups (2-<3, 3-<4, 4-<5, 5-<6, 6-<9, 9-<12, 12-<15, and 15-<18) in Beijing, China by Monte Carlo simulation approach. The main findings are as follows: lead exposure in children aged 2-<3 years exceeds the exposure dose (0.3 μg·kg-1·d-1) of 0.5 point reduction in intelligence quotient. Moreover, children aged 2-<3 and 6-<9 years have relatively high non-carcinogenic risk (NCR) of 1.32 and 1.30, respectively. The carcinogenic risk (CR) for children aged 6-<9 and 9-<12 years is 2.73×10-6 and 2.39×10-6, respectively. Specifically, the contributions of oral ingestion, dermal contact, and inhalation to the NCR were 69.5%, 18.9%, and 11.6%, respectively. Moreover, the combined NCR contributions of copper, cadmium, mercury, and arsenic (As) were about 69.4%. The contributions of the above three routes to the CR were 93.4%, 4.1%, and 2.5%, in that order, with the largest CR contribution of As being about 92.0%. This study can provide new ideas for accurately assessing the exposure and health risks of HMs in the population, and we believe that it is necessary to update the national standards for food and soil based on the bioavailability of HMs.
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Affiliation(s)
- Zhongwen Du
- Baoding University of Technology, Baoding, 071000, China
| | - Zuguang Tian
- Baoding Productivity Promotion Center, Baoding, 071000, China
| | - Yelan Yin
- No. 4 Drilling Engineering Branch Company, CNPC Bohai Drilling Engineering Company Limited, Hejian, 062400, Hebei, China
| | - Junxiao Wei
- School of Chemistry and Environment, Guangdong Ocean University, Zhanjiang, 524088, China.
| | - Yue Mu
- Chongqing Key Laboratory of Agricultural Resources and Environment, College of Resources and Environment, Southwest University, Chongqing, 400715, China
| | - Jianjun Cai
- School of Architecture and Traffic, Guilin University of Electronic Technology, Guilin, 541004, China
| | - Zefeng Song
- Institute of Resources and Environmental Engineering, Hebei GEO University, Shijiazhuang, 050031, China
| | - Kuang Cen
- School of Earth Sciences and Resources, China University of Geosciences (Beijing), Beijing, 100083, China
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15
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Okubo H, Nakayama SF. Periconceptional diet quality and its relation to blood heavy metal concentrations among pregnant women: The Japan environment and Children's study. ENVIRONMENTAL RESEARCH 2023; 225:115649. [PMID: 36894116 DOI: 10.1016/j.envres.2023.115649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 03/01/2023] [Accepted: 03/06/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND Diets contain toxic chemical contaminants as well as essential nutrients, both of which influence the intrauterine environment for foetal growth. However, whether a high-quality diet that is nutritionally healthy also results in lower exposure to chemical contaminants is unknown. OBJECTIVE We examined associations between periconceptional maternal diet quality and circulating concentrations of heavy metals during pregnancy. DESIGN Dietary intake over the year prior to the first trimester of pregnancy was assessed using a validated, self-administered food frequency questionnaire among 81,104 pregnant Japanese women who participated in the Japan Environment and Children's Study. Overall diet quality was determined using the Balanced Diet Score (BDS) based on the Japanese Food Guide Spinning Top, the Healthy Eating Index-2015 (HEI-2015), the Dietary Approaches to Stop Hypertension (DASH) score and the Mediterranean diet score (MDS). We measured whole-blood concentrations of mercury (Hg), lead (Pb) and cadmium (Cd) during the second or third trimester of pregnancy. RESULTS After controlling for confounders, all diet quality scores were positively associated with blood Hg concentrations. By contrast, higher BDS, HEI-2015 and DASH scores were associated with lower concentrations of Pb and Cd. Although the MDS was positively associated with concentrations of Pb and Cd, when dairy products were classified as a beneficial (rather than detrimental) food component, these associations were attenuated. CONCLUSION A high-quality diet may reduce exposure to Pb and Cd but not Hg. Further studies are required to determine the optimal balance between mercury exposure risk and nutritional benefits of high-quality diets prior to pregnancy.
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Affiliation(s)
- Hitomi Okubo
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Ibaraki, Japan; Research Fellow of Japan Society for the Promotion of Science, Tokyo, Japan.
| | - Shoji F Nakayama
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Ibaraki, Japan.
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16
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Okubo H, Nakayama SF. Periconceptional maternal diet quality influences blood heavy metal concentrations and their effect on low birth weight: the Japan Environment and Children's Study. ENVIRONMENT INTERNATIONAL 2023; 173:107808. [PMID: 36827813 DOI: 10.1016/j.envint.2023.107808] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 01/09/2023] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND Both poor maternal nutrition and toxic heavy metal exposure influence foetal growth and development. However, whether consumption of a variety of healthy foods modifies the association between prenatal heavy metal exposure and foetal growth is unknown. OBJECTIVE We examined whether long-term maternal diet quality in periconception modifies the associations between maternal circulating concentrations of heavy metals and foetal growth. DESIGN Data of 72,317 Japanese women who delivered singleton infants was extracted from the Japan Environment and Children's Study. Maternal diet over a 1-year before the first trimester of pregnancy was assessed using a validated food frequency questionnaire, and overall diet quality was determined using the balanced diet score based on the Japanese Food Guide Spinning Top. Maternal whole-blood concentrations of mercury (Hg), lead (Pb) and cadmium (Cd) were measured during the second/third trimester of pregnancy. Bayesian inference of multiple linear regression analysis was performed to evaluate the relationships between maternal diet quality and the blood concentrations of heavy metals; Bayesian logistic regression was used to analyse the risk of low birth weight (LBW; <2,500 g). RESULTS After controlling for confounders, a high maternal balanced diet score was associated with low concentrations of blood Pb and Cd and high Hg. While all heavy metals assessed were positively associated with LBW risk, a higher maternal balanced diet score was negatively associated with LBW risk. A high-quality maternal diet attenuated the effect of Pb on LBW, an effect that was more marked at high blood Pb concentrations. CONCLUSION A high-quality, 'well-balanced' diet prior to conception may reduce exposure to some heavy metals and mitigate the elevated risk of LBW associated with prenatal Pb exposure in Japanese mother-child pairs.
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Affiliation(s)
- Hitomi Okubo
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Ibaraki, Japan; Research Fellow of Japan Society for the Promortion of Science, Tokyo, Japan.
| | - Shoji F Nakayama
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Ibaraki, Japan.
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Santos ADSE, Saraiva RDDS, de Oliveira APN, Costa MA, Alonzo HGA, Campolina D, André LC, Peixoto SV, Câmara VDM, Asmus CIRF. Metal exposure in a child population after a mine tailings dam failure. Projeto Bruminha. REVISTA BRASILEIRA DE EPIDEMIOLOGIA 2023; 26:e230017. [PMID: 36820754 PMCID: PMC9949485 DOI: 10.1590/1980-549720230017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 11/22/2022] [Indexed: 02/24/2023] Open
Abstract
OBJECTIVE This study aimed to analyze the urinary concentrations of As, Cd, Pb, Hg, and Mn in children living in areas directly affected by the tailings of the Brumadinho disaster. METHODS We performed a cross-sectional descriptive study on a population of 217 children aged 0 to 6 years, living in Córrego do Feijão (CF), Parque da Cachoeira (PC), Aranha (AR), and Tejuco (TJ), enrolled in the Longitudinal Study of Child Health in Brumadinho (Minas Gerais) - Projeto Bruminha. Socioeconomic data and urine samples were collected to determine the concentration of selected metals. RESULTS Children living in locations not directly affected by the disaster (AR and TJ) had higher concentrations of As and Mn than those in directly affected areas (CF and PC). Additionally, children living in locations not potentially exposed to dust from tailings mud or mining activity (AR) showed higher urinary As concentrations than those potentially exposed (CF, PC, and TJ). CONCLUSION Our results suggest the need to investigate possible sources of As exposure in children living in areas not directly affected by the disaster and not potentially exposed to dust.
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Affiliation(s)
| | | | | | | | | | - Délio Campolina
- Fundação Hospitalar do Estado de Minas Gerais – Belo Horizonte (MG), Brazil
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18
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Santana AB, Spelta LEW, Sobalvarro JVM, Podestá MHMC, Garcia RCT, Dos Reis TM, Torres LH. Gestational lead exposure and its effects on fetal/infant development - A systematic review. Reprod Toxicol 2023; 117:108342. [PMID: 36758879 DOI: 10.1016/j.reprotox.2023.108342] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 02/05/2023] [Indexed: 02/10/2023]
Abstract
Studies suggest that gestational exposure to lead (Pb) is related to spontaneous abortions, preterm birth, lower infant birth weight and length, and neurological dysfunctions. However, the evidence about its effects during pregnancy exposure on fetal and child development is still poor. Thus, the aim of this systematic review was to verify the association between prenatal exposure to Pb and the occurrence of neurobehavioral deficits, miscarriages, and child mortality. Observational studies with pregnant women exposed to Pb during pregnancy were included, without gender or ethnicity restrictions. The MEDLINE, Cochrane Library, EMBASE, Scopus, Web of Science, and LILACS databases were searched. The reading of titles and abstracts was conducted, followed by reading in full format and data extraction, that were performed independently by two reviewers. The included studies were evaluated by Downs and Black tool and qualitatively synthesized. Certainty of evidence was assessed by Grading of Recommendations Assessment, Development, and Evaluations (GRADE). The study protocol was registered with the Prospective Registry of Systematic Reviews (PROSPERO; CRD42022296750). Among twenty-one studies included, sixteen were classified as prospective cohort, two case-control, one nested case-control, one cohort, and one longitudinal study. No study that evaluated child mortality associated with gestational Pb exposure was found. There is a very low certainty of evidence in the association of gestational Pb exposure and neurobehavioral deficits or miscarriages. This systematic review reflects the poor evidence and the challenges of human toxicology studies, since it was not possible to associate gestational Pb exposure to neurobehavioral deficits, miscarriages, and child mortality.
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Affiliation(s)
- Aleksander Brandão Santana
- Department of Food and Drugs, School of Pharmaceutical Sciences, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 700, Alfenas 37130-001, MG, Brazil
| | - Lídia Emmanuela Wiazowski Spelta
- Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, 580, Butantã, São Paulo 05508-000, SP, Brazil
| | - Joselin Valeska Martinez Sobalvarro
- Department of Food and Drugs, School of Pharmaceutical Sciences, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 700, Alfenas 37130-001, MG, Brazil; Department of Health Sciences, Federal University of Paraná, Av. Mayor Lothário Meissner, 623, Jardim Botânico, Curitiba 80210-170, PR, Brazil
| | - Márcia Helena Miranda Cardoso Podestá
- Department of Food and Drugs, School of Pharmaceutical Sciences, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 700, Alfenas 37130-001, MG, Brazil
| | - Raphael Caio Tamborelli Garcia
- Department of Pharmaceutical Sciences, Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo, Diadema, SP, Brazil
| | - Tiago Marques Dos Reis
- Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 700, Alfenas 37130-001, MG, Brazil
| | - Larissa Helena Torres
- Department of Food and Drugs, School of Pharmaceutical Sciences, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 700, Alfenas 37130-001, MG, Brazil.
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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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Invernizzi A, Rechtman E, Oluyemi K, Renzetti S, Curtin P, Colicino E, Ambrosi C, Mascaro L, Patrono A, Corbo D, Cagna G, Gasparotti R, Reichenberg A, Tang CY, Smith DR, Placidi D, Lucchini RG, Wright RO, Horton MK. Topological network properties of resting-state functional connectivity patterns are associated with metal mixture exposure in adolescents. Front Neurosci 2023; 17:1098441. [PMID: 36814793 PMCID: PMC9939635 DOI: 10.3389/fnins.2023.1098441] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 01/17/2023] [Indexed: 02/08/2023] Open
Abstract
Introduction Adolescent exposure to neurotoxic metals adversely impacts cognitive, motor, and behavioral development. Few studies have addressed the underlying brain mechanisms of these metal-associated developmental outcomes. Furthermore, metal exposure occurs as a mixture, yet previous studies most often consider impacts of each metal individually. In this cross-sectional study, we investigated the relationship between exposure to neurotoxic metals and topological brain metrics in adolescents. Methods In 193 participants (53% females, ages: 15-25 years) enrolled in the Public Health Impact of Metals Exposure (PHIME) study, we measured concentrations of four metals (manganese, lead, copper, and chromium) in multiple biological media (blood, urine, hair, and saliva) and acquired resting-state functional magnetic resonance imaging scans. Using graph theory metrics, we computed global and local efficiency (global:GE; local:LE) in 111 brain areas (Harvard Oxford Atlas). We used weighted quantile sum (WQS) regression models to examine association between metal mixtures and each graph metric (GE or LE), adjusted for sex and age. Results We observed significant negative associations between the metal mixture and GE and LE [βGE = -0.076, 95% CI (-0.122, -0.031); βLE= -0.051, 95% CI (-0.095, -0.006)]. Lead and chromium measured in blood contributed most to this association for GE, while chromium measured in hair contributed the most for LE. Discussion Our results suggest that exposure to this metal mixture during adolescence reduces the efficiency of integrating information in brain networks at both local and global levels, informing potential neural mechanisms underlying the developmental toxicity of metals. Results further suggest these associations are due to combined joint effects to different metals, rather than to a single metal.
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Affiliation(s)
- Azzurra Invernizzi
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Elza Rechtman
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Kristie Oluyemi
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, United States
- Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY, United States
- The Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
- Graduate School of Biomedical Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Stefano Renzetti
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
| | - Paul Curtin
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Elena Colicino
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | | | | | - Alessandra Patrono
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
| | - Daniele Corbo
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
| | - Giuseppa Cagna
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
| | - Roberto Gasparotti
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
| | - Abraham Reichenberg
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Cheuk Y. Tang
- Department of Medical Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
| | - Donald R. Smith
- Department of Microbiology and Environmental Toxicology, University of California, Santa Cruz, Santa Cruz, CA, United States
| | - Donatella Placidi
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
| | - Roberto G. Lucchini
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
- Department of Environmental Health Sciences, Robert Stempel School of Public Health, Florida International University, Miami, FL, United States
| | - Robert O. Wright
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Megan K. Horton
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, United States
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Lead content in automotive paints purchased at formal and informal outlets in Kenya. Heliyon 2023; 9:e12831. [PMID: 36711311 PMCID: PMC9879762 DOI: 10.1016/j.heliyon.2023.e12831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 12/19/2022] [Accepted: 01/03/2023] [Indexed: 01/13/2023] Open
Abstract
Lead (Pb) is added to automotive paints to prevent corrosion on metallic surfaces, for decorative colours, and for reflective properties to heighten visibility, and enhanced drying time, and durability. However, there are substitutes for all of these applications and Pb is highly toxic to human health and the environment. Through concerted efforts, leaded gasoline was phased out and currently, the focus is on lead-based paints. Leaded automotive paint used for spray painting activities often conducted in close proximity to human habitation raises public health concerns over possible exposure. This study was therefore undertaken to assess Pb levels in automotive paints frequently used by informal spray painters. A total of thirty-two (n = 32) cans of automotive paints were purchased in 4 sets of red, blue, green and white colours from eight formal and informal retail shops. Lead levels in the paint samples were analyzed in triplicates using Atomic Absorption Spectrophotometry. All the automotive paints from the informal retail shops had Pb levels that ranged from 220 to 2740 ppm, and exceeded the regulatory limit of 90 ppm. The blue paint from the informal store had the highest Pb levels which were 30 times of the set limit. On the contrary, the paints from the formal stores had significantly (p < 0.05) lower Pb levels that ranged from 80.7 to 580 ppm than those of the informal stores. Although only one paint sample from the former retail shop had Pb levels within the limit. In general, the elevated Pb levels in automotive paints that are used in an unregulated environment are potential sources of exposure and environmental contamination. The study urgently calls for enforcement of the regulatory limits and comprehensive Pb exposure assessments in this sector.
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Pajarillo E, Nyarko-Danquah I, Digman A, Multani HK, Kim S, Gaspard P, Aschner M, Lee E. Mechanisms of manganese-induced neurotoxicity and the pursuit of neurotherapeutic strategies. Front Pharmacol 2022; 13:1011947. [PMID: 36605395 PMCID: PMC9808094 DOI: 10.3389/fphar.2022.1011947] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 12/01/2022] [Indexed: 01/07/2023] Open
Abstract
Chronic exposure to elevated levels of manganese via occupational or environmental settings causes a neurological disorder known as manganism, resembling the symptoms of Parkinson's disease, such as motor deficits and cognitive impairment. Numerous studies have been conducted to characterize manganese's neurotoxicity mechanisms in search of effective therapeutics, including natural and synthetic compounds to treat manganese toxicity. Several potential molecular targets of manganese toxicity at the epigenetic and transcriptional levels have been identified recently, which may contribute to develop more precise and effective gene therapies. This review updates findings on manganese-induced neurotoxicity mechanisms on intracellular insults such as oxidative stress, inflammation, excitotoxicity, and mitophagy, as well as transcriptional dysregulations involving Yin Yang 1, RE1-silencing transcription factor, transcription factor EB, and nuclear factor erythroid 2-related factor 2 that could be targets of manganese neurotoxicity therapies. This review also features intracellular proteins such as PTEN-inducible kinase 1, parkin, sirtuins, leucine-rich repeat kinase 2, and α-synuclein, which are associated with manganese-induced dysregulation of autophagy/mitophagy. In addition, newer therapeutic approaches to treat manganese's neurotoxicity including natural and synthetic compounds modulating excitotoxicity, autophagy, and mitophagy, were reviewed. Taken together, in-depth mechanistic knowledge accompanied by advances in gene and drug delivery strategies will make significant progress in the development of reliable therapeutic interventions against manganese-induced neurotoxicity.
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Affiliation(s)
- Edward Pajarillo
- Department of Pharmaceutical Science, College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL, United States
| | - Ivan Nyarko-Danquah
- Department of Pharmaceutical Science, College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL, United States
| | - Alexis Digman
- Department of Pharmaceutical Science, College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL, United States
| | - Harpreet Kaur Multani
- Department of Biology, College of Science and Technology, Florida A&M University, Tallahassee, FL, United States
| | - Sanghoon Kim
- Department of Pharmaceutical Science, College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL, United States
| | - Patric Gaspard
- Department of Pharmaceutical Science, College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL, United States
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, New York, NY, United States
| | - Eunsook Lee
- Department of Pharmaceutical Science, College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL, United States
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Axelrad DA, Coffman E, Kirrane EF, Klemick H. The relationship between childhood blood lead levels below 5 µg/dL and childhood intelligence quotient (IQ): Protocol for a systematic review and meta-analysis. ENVIRONMENT INTERNATIONAL 2022; 169:107475. [PMID: 36162279 PMCID: PMC9896788 DOI: 10.1016/j.envint.2022.107475] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 08/10/2022] [Accepted: 08/12/2022] [Indexed: 05/10/2023]
Abstract
BACKGROUND The causal association between childhood lead (Pb) exposure and decrements in intelligence quotient (IQ) is well-established, and no safe blood lead level (BLL) in children has been identified. An international pooled analysis of seven prospective studies published by Lanphear et al. in 2005 quantified the relationship between childhood BLL and IQ. Further studies of Pb and IQ have been published more recently with mean BLLs generally lower than in the studies analyzed by Lanphear et al. In this article, we present the protocol for a systematic review to estimate an updated Pb-IQ relationship focusing on BLLs below 5 µg per deciliter (µg/dL). STUDY QUESTION What is the quantitative relationship between childhood BLLs and IQ at ages 3-17 years at BLLs below 5 μg/dL? DATA SOURCES A comprehensive search of the scientific literature will utilize citation mapping and key word searching. In the citation mapping approach, we will identify seed references that are relevant to our study question, and will then identify more recent references that have cited at least one of the seed references. The key word search will be conducted in the PubMed, Biosis Previews, Scopus, and Web of Science databases. We will also search electronic grey literature databases for conference proceedings, dissertations, and preprints. STUDY ELIGIBILITY CRITERIA, STUDY SCREENING AND DATA EXTRACTION We will include studies that measured BLL in children at any age, assessed full-scale IQ of the same children (concurrent with or subsequent to BLL sample collection) at ages 3-17, and estimated a continuous quantitative relationship between BLL and IQ. We will consider only studies with a central tendency BLL < 10 µg/dL. The title and abstract of each record will be reviewed independently by two authors to determine whether the study in question satisfies the inclusion criteria. The full text of each article remaining after title-abstract screening will be reviewed independently by two authors to determine whether the study in question satisfies the inclusion criteria. Two authors will independently extract study characteristics and data from each included study. RISK OF BIAS ASSESSMENT Studies meeting inclusion criteria will be evaluated for risk of bias (RoB) using the Navigation Guide method applied in a previous systematic review of neurodevelopmental effects (Lam et al., 2017), with adaptation to our study question. Each study will be independently evaluated by two review authors. DATA ANALYSIS AND SYNTHESIS We intend to conduct a random-effects meta-analysis to summarize the effects of children's exposure to Pb on IQ scores. Additionally, we plan to perform sensitivity analyses using sub-group analyses and/or meta-regression techniques to assess the impact of study design and study population characteristics to examine potential heterogeneity of results across studies. We will assign a confidence level rating (high, moderate, low, or very low) to the effect estimate from the meta-analyses/meta-regressions.
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Affiliation(s)
| | - Evan Coffman
- U.S. Environmental Protection Agency, Office of Research and Development, Center for Public Health and Environmental Assessment, Research Triangle Park, NC, USA.
| | - Ellen F Kirrane
- U.S. Environmental Protection Agency, Office of Research and Development, Center for Public Health and Environmental Assessment, Research Triangle Park, NC, USA.
| | - Heather Klemick
- U.S. Environmental Protection Agency, Office of Policy, National Center for Environmental Economics, Washington, DC, USA.
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Islam F, Shohag S, Akhter S, Islam MR, Sultana S, Mitra S, Chandran D, Khandaker MU, Ashraf GM, Idris AM, Emran TB, Cavalu S. Exposure of metal toxicity in Alzheimer’s disease: An extensive review. Front Pharmacol 2022; 13:903099. [PMID: 36105221 PMCID: PMC9465172 DOI: 10.3389/fphar.2022.903099] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 07/14/2022] [Indexed: 11/13/2022] Open
Abstract
Metals serve important roles in the human body, including the maintenance of cell structure and the regulation of gene expression, the antioxidant response, and neurotransmission. High metal uptake in the nervous system is harmful because it can cause oxidative stress, disrupt mitochondrial function, and impair the activity of various enzymes. Metal accumulation can cause lifelong deterioration, including severe neurological problems. There is a strong association between accidental metal exposure and various neurodegenerative disorders, including Alzheimer’s disease (AD), the most common form of dementia that causes degeneration in the aged. Chronic exposure to various metals is a well-known environmental risk factor that has become more widespread due to the rapid pace at which human activities are releasing large amounts of metals into the environment. Consequently, humans are exposed to both biometals and heavy metals, affecting metal homeostasis at molecular and biological levels. This review highlights how these metals affect brain physiology and immunity and their roles in creating harmful proteins such as β-amyloid and tau in AD. In addition, we address findings that confirm the disruption of immune-related pathways as a significant toxicity mechanism through which metals may contribute to AD.
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Affiliation(s)
- Fahadul Islam
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka, Bangladesh
| | - Sheikh Shohag
- Department of Genetic Engineering and Biotechnology, Faculty of Earth and Ocean Science, Bangabandhu Sheikh Mujibur Rahman Maritime University, Dhaka, Bangladesh
| | - Shomaya Akhter
- Department of Genetic Engineering and Biotechnology, Faculty of Earth and Ocean Science, Bangabandhu Sheikh Mujibur Rahman Maritime University, Dhaka, Bangladesh
| | - Md. Rezaul Islam
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka, Bangladesh
| | - Sharifa Sultana
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka, Bangladesh
| | - Saikat Mitra
- Department of Pharmacy, Faculty of Pharmacy, University of Dhaka, Dhaka, Bangladesh
| | - Deepak Chandran
- Department of Veterinary Sciences and Animal Husbandry, Amrita School of Agricultural Sciences, Amrita Vishwa Vidyapeetham University, Coimbatore, India
| | - Mayeen Uddin Khandaker
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, Subang Jaya, Malaysia
| | - Ghulam Md Ashraf
- Pre-Clinical Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
- Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
- *Correspondence: Ghulam Md Ashraf, ; Abubakr M. Idris, ; Talha Bin Emran, ; Simona Cavalu,
| | - Abubakr M. Idris
- Department of Chemistry, College of Science, King Khalid University, Abha, Saudi Arabia
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, Abha, Saudi Arabia
- *Correspondence: Ghulam Md Ashraf, ; Abubakr M. Idris, ; Talha Bin Emran, ; Simona Cavalu,
| | - Talha Bin Emran
- Department of Pharmacy, BGC Trust University Bangladesh, Chittagong, Bangladesh
- *Correspondence: Ghulam Md Ashraf, ; Abubakr M. Idris, ; Talha Bin Emran, ; Simona Cavalu,
| | - Simona Cavalu
- Faculty of Medicine and Pharmacy, University of Oradea, Oradea, Romania
- *Correspondence: Ghulam Md Ashraf, ; Abubakr M. Idris, ; Talha Bin Emran, ; Simona Cavalu,
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