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Dimitrov LV, Kaminski JW, Holbrook JR, Bitsko RH, Yeh M, Courtney JG, O'Masta B, Maher B, Cerles A, McGowan K, Rush M. A Systematic Review and Meta-analysis of Chemical Exposures and Attention-Deficit/Hyperactivity Disorder in Children. PREVENTION SCIENCE : THE OFFICIAL JOURNAL OF THE SOCIETY FOR PREVENTION RESEARCH 2024; 25:225-248. [PMID: 38108946 PMCID: PMC11132938 DOI: 10.1007/s11121-023-01601-6] [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] [Accepted: 10/17/2023] [Indexed: 12/19/2023]
Abstract
Exposure to certain chemicals prenatally and in childhood can impact development and may increase risk for attention-deficit/hyperactivity disorder (ADHD). Leveraging a larger set of literature searches conducted to synthesize results from longitudinal studies of potentially modifiable risk factors for childhood ADHD, we present meta-analytic results from 66 studies that examined the associations between early chemical exposures and later ADHD diagnosis or symptoms. Studies were eligible for inclusion if the chemical exposure occurred at least 6 months prior to measurement of ADHD diagnosis or symptomatology. Included papers were published between 1975 and 2019 on exposure to anesthetics (n = 5), cadmium (n = 3), hexachlorobenzene (n = 4), lead (n = 22), mercury (n = 12), organophosphates (n = 7), and polychlorinated biphenyls (n = 13). Analyses are presented for each chemical exposure by type of ADHD outcome reported (categorical vs. continuous), type of ADHD measurement (overall measures of ADHD, ADHD symptoms only, ADHD diagnosis only, inattention only, hyperactivity/impulsivity only), and timing of exposure (prenatal vs. childhood vs. cumulative), whenever at least 3 relevant effect sizes were available. Childhood lead exposure was positively associated with ADHD diagnosis and symptoms in all analyses except for the prenatal analyses (odds ratios (ORs) ranging from 1.60 to 2.62, correlation coefficients (CCs) ranging from 0.14 to 0.16). Other statistically significant associations were limited to organophosphates (CC = 0.11, 95% confidence interval (CI): 0.03-0.19 for continuous measures of ADHD outcomes overall), polychlorinated biphenyls (CC = 0.08, 95% CI: 0.02-0.14 for continuous measures of inattention as the outcome), and both prenatal and childhood mercury exposure (CC = 0.02, 95% CI: 0.00-0.04 for continuous measures of ADHD outcomes overall for either exposure window). Our findings provide further support for negative impacts of prenatal and/or childhood exposure to certain chemicals and raise the possibility that primary prevention and targeted screening could prevent or mitigate ADHD symptomatology. Furthermore, these findings support the need for regular review of regulations as our scientific understanding of the risks posed by these chemicals evolves.
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Affiliation(s)
- Lina V Dimitrov
- Division of Human Development and Disability, National Center On Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, GA, USA.
- Oak Ridge Institute for Science and Education, Oak Ridge, TN, USA.
| | - Jennifer W Kaminski
- Division of Human Development and Disability, National Center On Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Joseph R Holbrook
- Division of Human Development and Disability, National Center On Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Rebecca H Bitsko
- Division of Human Development and Disability, National Center On Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Michael Yeh
- Division of Environmental Health Science and Practice, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Joseph G Courtney
- Division of Environmental Health Science and Practice, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | | | - Brion Maher
- Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
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Skalny AV, Aschner M, Gritsenko VA, Martins AC, Tizabi Y, Korobeinikova TV, Paoliello MM, Tinkov AA. Modulation of gut microbiota with probiotics as a strategy to counteract endogenous and exogenous neurotoxicity. ADVANCES IN NEUROTOXICOLOGY 2024; 11:133-176. [PMID: 38741946 PMCID: PMC11090489 DOI: 10.1016/bs.ant.2024.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
The existing data demonstrate that probiotic supplementation affords protective effects against neurotoxicity of exogenous (e.g., metals, ethanol, propionic acid, aflatoxin B1, organic pollutants) and endogenous (e.g., LPS, glucose, Aβ, phospho-tau, α-synuclein) agents. Although the protective mechanisms of probiotic treatments differ between various neurotoxic agents, several key mechanisms at both the intestinal and brain levels seem inherent to all of them. Specifically, probiotic-induced improvement in gut microbiota diversity and taxonomic characteristics results in modulation of gut-derived metabolite production with increased secretion of SFCA. Moreover, modulation of gut microbiota results in inhibition of intestinal absorption of neurotoxic agents and their deposition in brain. Probiotics also maintain gut wall integrity and inhibit intestinal inflammation, thus reducing systemic levels of LPS. Centrally, probiotics ameliorate neurotoxin-induced neuroinflammation by decreasing LPS-induced TLR4/MyD88/NF-κB signaling and prevention of microglia activation. Neuroprotective mechanisms of probiotics also include inhibition of apoptosis and oxidative stress, at least partially by up-regulation of SIRT1 signaling. Moreover, probiotics reduce inhibitory effect of neurotoxic agents on BDNF expression, on neurogenesis, and on synaptic function. They can also reverse altered neurotransmitter metabolism and exert an antiamyloidogenic effect. The latter may be due to up-regulation of ADAM10 activity and down-regulation of presenilin 1 expression. Therefore, in view of the multiple mechanisms invoked for the neuroprotective effect of probiotics, as well as their high tolerance and safety, the use of probiotics should be considered as a therapeutic strategy for ameliorating adverse brain effects of various endogenous and exogenous agents.
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Affiliation(s)
- Anatoly V. Skalny
- Center of Bioelementology and Human Ecology, IM Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
- Department of Medical Elementology, Peoples’ Friendship University of Russia (RUDN University), Moscow, Russia
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Viktor A. Gritsenko
- Institute of Cellular and Intracellular Symbiosis, Ural Branch of the Russian Academy of Sciences, Orenburg, Russia
| | - Airton C. Martins
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Yousef Tizabi
- Department of Pharmacology, Howard University College of Medicine, Washington, DC, United States
| | - Tatiana V. Korobeinikova
- Center of Bioelementology and Human Ecology, IM Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
- Department of Medical Elementology, Peoples’ Friendship University of Russia (RUDN University), Moscow, Russia
| | - Monica M.B. Paoliello
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Alexey A. Tinkov
- Institute of Cellular and Intracellular Symbiosis, Ural Branch of the Russian Academy of Sciences, Orenburg, Russia
- Laboratory of Ecobiomonitoring and Quality Control, Yaroslavl State University, Yaroslavl, Russia
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Liu M, Liu R, Wang R, Ba Y, Yu F, Deng Q, Huang H. Lead-induced neurodevelopmental lesion and epigenetic landscape: Implication in neurological disorders. J Appl Toxicol 2022. [PMID: 36433892 DOI: 10.1002/jat.4419] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 11/20/2022] [Accepted: 11/20/2022] [Indexed: 11/27/2022]
Abstract
Lead (Pb) was implicated in multiple genotoxic, neuroepigenotoxic, and chromosomal-toxic mechanisms and interacted with varying synaptic plasticity pathways, likely underpinning previous reports of links between Pb and cognitive impairment. Epigenetic changes have emerged as a promising biomarker for neurological disorders, including cognitive disorders, Alzheimer's disease (AD), and Parkinson's disease (PD). In the present review, special attention is paid to neural epigenetic features and mechanisms that can alter gene expression patterns upon environmental Pb exposure in rodents, primates, and zebrafish. Epigenetic modifications have also been discussed in population studies and cell experiment. Further, we explore growing evidence of potential linkage between Pb-induced disruption of regulatory pathway and neurodevelopmental and neurological disorders both in vivo and in vitro. These findings uncover how epigenome in neurons facilitates the development and function of the brain in response to Pb insult.
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Affiliation(s)
- Mengchen Liu
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, 450001, China
| | - Rundong Liu
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, 450001, China
| | - Ruike Wang
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, 450001, China
| | - Yue Ba
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, 450001, China
| | - Fangfang Yu
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, 450001, China
| | - Qihong Deng
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, 450001, China
| | - Hui Huang
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, 450001, China
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Nedelescu M, Stan M, Ciobanu AM, Bălălău C, Filippini T, Baconi D. Attention deficit among preschool and school-aged children living near former metal-processing plants in Romania. ENVIRONMENTAL RESEARCH 2022; 208:112689. [PMID: 34999026 DOI: 10.1016/j.envres.2022.112689] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 12/14/2021] [Accepted: 01/04/2022] [Indexed: 05/06/2023]
Abstract
Industrial areas affected by high and long-term heavy metal pollution have a great impact on health of the resident population. Children represent a group at high-risk with an increased susceptibility to chronic heavy metal intoxication. Our work included the assessment of attention particularities through a case-control study in pre-school and school-aged children (4-6 years and 8-11 years) from two study areas, Copşa Mică and Zlatna, compared to a non-polluted locality with no history of heavy metal pollution. Copşa Mică and Zlatna are two of the most polluted heavy metals regions in Romania due to non-ferrous metallurgy for a long period of time. Recruitment of participants was made by a random selection of an entire class for each age within the schools and kindergartens from the study areas (Copşa Mică and Zlatna) and from the non-polluted region. Interpretation of data was performed using statistical analysis (ANOVA and Student's t-test). Preschool children (4-6 years) were tested using Wechsler Preschool and Primary Scale of Intelligence (WPPSI) tests, Animal House and labyrinth samples. The results of the attention tests applied to pre-school children were lower in the study areas compared to the control group, but no statistical differences were found. The results of the attention tests applied to children aged between 8 and 11 years (Toulouse-Pieron test and Traffic light test) indicate lower average scores within the study groups from polluted areas, compared to the control group. Differences with statistically significance were registered for the 8 years age group (p = 0.037). In these areas efficient strategies and precise intervention measures are needed in order to limit or remove the heavy metal exposure and protect the human health, especially the groups exposed to a high level of risk.
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Affiliation(s)
- Mirela Nedelescu
- (")Carol Davila" University of Medicine and Pharmacy, Faculty of Medicine, 8 Eroii Sanitari Blvd, Bucharest, Romania; National Institute of Public Health, Department of Food Hygiene and Nutrition, 1-3 Dr. Leonte Street, Bucharest, Romania
| | - Miriana Stan
- "Carol Davila" University of Medicine and Pharmacy "Carol Davila", Faculty of Pharmacy, 6 Traian Vuia Street, Bucharest, Romania.
| | - Anne-Marie Ciobanu
- "Carol Davila" University of Medicine and Pharmacy "Carol Davila", Faculty of Pharmacy, 6 Traian Vuia Street, Bucharest, Romania
| | - Cristian Bălălău
- (")Carol Davila" University of Medicine and Pharmacy, Faculty of Medicine, 8 Eroii Sanitari Blvd, Bucharest, Romania
| | - Tommaso Filippini
- CREAGEN - Environmental, Genetic and Nutritional Epidemiology Research Center, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Via Campi 287, Modena, Italy
| | - Daniela Baconi
- "Carol Davila" University of Medicine and Pharmacy "Carol Davila", Faculty of Pharmacy, 6 Traian Vuia Street, Bucharest, Romania
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Pham-The T, Nishijo M, Pham TN, Vu HT, Tran NN, Tran AH, Hoang LV, Do Q, Nishino Y, Nishijo H. Perinatal Dioxin Exposure and Attention Deficit Hyperactivity Disorder (ADHD) Symptoms in Children Living in a Dioxin Contamination Hotspot in Vietnam. TOXICS 2022; 10:toxics10050212. [PMID: 35622626 PMCID: PMC9143824 DOI: 10.3390/toxics10050212] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/26/2022] [Accepted: 04/01/2022] [Indexed: 01/27/2023]
Abstract
We examined children in Da Nang, a dioxin contamination hotspot in Vietnam, twice at 5 and 8 years of age, and investigated sex- and age-dependent differences in the effects of dioxin exposure on attention deficit hyperactivity disorder (ADHD) symptoms. We also studied autistic traits in children with ADHD symptoms. A total of 163 children participated in follow-up surveys at 5 and 8 years of age and were included in the present analysis. ADHD symptoms were assessed using an ADHD rating scale with inattention and hyperactivity-and-impulsivity (hyperactivity) subscales. Autistic behaviors were evaluated using the Autism Spectrum Rating Scale (ASRS). Perinatal dioxin exposure was indicated by dioxin levels in maternal breast milk. In boys, hyperactivity scores were significantly higher in the high 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) group only at 5 years of age. In girls, hyperactivity scores at 8 years of age were significantly higher in the high TCDD group, which was significantly associated with those at 5 years of age. In girls, ASRS unusual behavior scores were significantly higher with higher TCDD exposure and hyperactivity scores at 8 years of age. These results suggest that high perinatal TCDD exposure may increase ADHD likelihood and autistic traits, particularly in girls of 7–8 years of age.
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Affiliation(s)
- Tai Pham-The
- Institute of Biomedicine and Pharmacy, Vietnam Military Medical University, Hanoi 12108, Vietnam; (T.N.P.); (A.H.T.); (L.V.H.); (Q.D.)
- Correspondence: ; Tel.: +84-339078560
| | - Muneko Nishijo
- Department of Public Health, Kanazawa Medical University, Uchinada, Ishikawa 920-0293, Japan; (M.N.); (H.T.V.); (Y.N.)
| | - Thao Ngoc Pham
- Institute of Biomedicine and Pharmacy, Vietnam Military Medical University, Hanoi 12108, Vietnam; (T.N.P.); (A.H.T.); (L.V.H.); (Q.D.)
| | - Hoa Thi Vu
- Department of Public Health, Kanazawa Medical University, Uchinada, Ishikawa 920-0293, Japan; (M.N.); (H.T.V.); (Y.N.)
| | - Nghi Ngoc Tran
- Ministry of Health, Vietnamese Government, Hanoi 10060, Vietnam;
| | - Anh Hai Tran
- Institute of Biomedicine and Pharmacy, Vietnam Military Medical University, Hanoi 12108, Vietnam; (T.N.P.); (A.H.T.); (L.V.H.); (Q.D.)
| | - Luong Van Hoang
- Institute of Biomedicine and Pharmacy, Vietnam Military Medical University, Hanoi 12108, Vietnam; (T.N.P.); (A.H.T.); (L.V.H.); (Q.D.)
| | - Quyet Do
- Institute of Biomedicine and Pharmacy, Vietnam Military Medical University, Hanoi 12108, Vietnam; (T.N.P.); (A.H.T.); (L.V.H.); (Q.D.)
| | - Yoshikazu Nishino
- Department of Public Health, Kanazawa Medical University, Uchinada, Ishikawa 920-0293, Japan; (M.N.); (H.T.V.); (Y.N.)
| | - Hisao Nishijo
- Faculty of Medicine, University of Toyama, Toyama 930-0194, Japan;
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Kendricks DR, Boomhower SR, Newland MC. Adolescence as a sensitive period for neurotoxicity: Lifespan developmental effects of methylmercury. Pharmacol Biochem Behav 2022; 217:173389. [PMID: 35452710 DOI: 10.1016/j.pbb.2022.173389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 04/04/2022] [Accepted: 04/11/2022] [Indexed: 10/18/2022]
Abstract
Neurotoxicity resulting from the environmental contaminant, methylmercury (MeHg), is a source of concern for many human populations that rely heavily on the consumption of fish and rice as stable ingredients in the diet. The developmental period of exposure is important both to the qualitative effects of MeHg and to the dose required to produce those effects. MeHg exposure during the sensitive prenatal period causes deleterious and long-lasting changes in neurodevelopment at particularly low doses. The effects include a wide host of cognitive and behavioral outcomes expressed in adulthood and sometimes not until aging. However, neurotoxic outcomes of methylmercury when exposure occurs during adolescence are only recently revealing impacts on human populations and animal models. This review examines the current body of work and showcases the sensitivity of adolescence, a period that straddles early development and adulthood, to methylmercury neurotoxicity and the implications such toxicity has in our understanding of methylmercury's effects in human populations and animal models.
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Affiliation(s)
- Dalisa R Kendricks
- Department of Psychology, Auburn University, Auburn, AL, United States of America.
| | - Steven R Boomhower
- Gradient, Boston, MA, United States of America; Harvard Division of Continuing Education, Harvard University, Cambridge, MA, United States of America
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Geiger SD, Bressler J, Kelly W, Jacobs DE, Awadalla SS, Hagston B, Onwuta U, Panier C, Dorevitch S. Predictors of Water Lead Levels in Drinking Water of Homes With Domestic Wells in 3 Illinois Counties. JOURNAL OF PUBLIC HEALTH MANAGEMENT AND PRACTICE 2021; 27:567-576. [PMID: 33252372 PMCID: PMC8462443 DOI: 10.1097/phh.0000000000001255] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
CONTEXT Millions of US homes receive water from private wells, which are not required to be tested for lead (Pb). An approach to prioritizing high-risk homes for water lead level (WLL) testing may help focus outreach and screening efforts, while reducing the testing of homes at low risk. OBJECTIVE To (1) characterize distribution of WLLs and corrosivity in tap water of homes with private residential wells, and (2) develop and evaluate a screening strategy for predicting Pb detection within a home. DESIGN Cross-sectional. SETTING Three Illinois counties: Kane (northern), Peoria (central), and Jackson (southern). PARTICIPANTS 151 private well users from 3 Illinois counties. INTERVENTION Water samples were analyzed for WLL and corrosivity. MAIN OUTCOME MEASURES (1) WLL and corrosivity, and (2) the sensitivity, specificity, and predictive value of a strategy for prioritizing homes for WLL testing. RESULTS Pb was detected (>0.76 ppb) in tap water of 48.3% homes, and 3.3% exceeded 15 ppb, the US Environmental Protection Agency action level for community water systems. Compared with homes built in/after 1987 with relatively low corrosivity, older homes with more corrosive water were far more likely to contain measurable Pb (odds ratio = 11.07; 95% confidence interval, 3.47-35.31). The strategy for screening homes with private wells for WLL had a sensitivity of 88%, specificity of 42%, positive predictive value of 58%, and negative predictive value of 80%. CONCLUSIONS Pb in residential well water is widespread. The screening strategy for prioritizing homes with private wells for WLL testing is greater than 85% sensitive.
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Affiliation(s)
- Sarah D. Geiger
- Department of Kinesiology and Community Health, (Dr Geiger), Groundwater Science Division, Illinois State Water Survey, Prairie Research Institute (Dr Kelly), University of Illinois at Urbana-Champaign, Champaign, Illinois; Division of Environmental and Occupational Health Sciences (Mr Bressler and Drs Jacobs and Dorevitch) and Epidemiology and Biostatistics (Dr Awadalla), School of Public Health, and Institute for Environmental Science and Policy (Dr Dorevitch), University of Illinois at Chicago, Chicago, Illinois; National Center for Healthy Housing, Columbia, Maryland (Dr Jacobs); Jackson County Health Department, Murphysboro, Illinois (Mr Hagston); Kane County Health Department, Aurora, Illinois (Ms Onwuta); and Peoria City/County Health Department, Peoria, Illinois (Ms Panier)
| | - Jonathan Bressler
- Department of Kinesiology and Community Health, (Dr Geiger), Groundwater Science Division, Illinois State Water Survey, Prairie Research Institute (Dr Kelly), University of Illinois at Urbana-Champaign, Champaign, Illinois; Division of Environmental and Occupational Health Sciences (Mr Bressler and Drs Jacobs and Dorevitch) and Epidemiology and Biostatistics (Dr Awadalla), School of Public Health, and Institute for Environmental Science and Policy (Dr Dorevitch), University of Illinois at Chicago, Chicago, Illinois; National Center for Healthy Housing, Columbia, Maryland (Dr Jacobs); Jackson County Health Department, Murphysboro, Illinois (Mr Hagston); Kane County Health Department, Aurora, Illinois (Ms Onwuta); and Peoria City/County Health Department, Peoria, Illinois (Ms Panier)
| | - Walton Kelly
- Department of Kinesiology and Community Health, (Dr Geiger), Groundwater Science Division, Illinois State Water Survey, Prairie Research Institute (Dr Kelly), University of Illinois at Urbana-Champaign, Champaign, Illinois; Division of Environmental and Occupational Health Sciences (Mr Bressler and Drs Jacobs and Dorevitch) and Epidemiology and Biostatistics (Dr Awadalla), School of Public Health, and Institute for Environmental Science and Policy (Dr Dorevitch), University of Illinois at Chicago, Chicago, Illinois; National Center for Healthy Housing, Columbia, Maryland (Dr Jacobs); Jackson County Health Department, Murphysboro, Illinois (Mr Hagston); Kane County Health Department, Aurora, Illinois (Ms Onwuta); and Peoria City/County Health Department, Peoria, Illinois (Ms Panier)
| | - David E. Jacobs
- Department of Kinesiology and Community Health, (Dr Geiger), Groundwater Science Division, Illinois State Water Survey, Prairie Research Institute (Dr Kelly), University of Illinois at Urbana-Champaign, Champaign, Illinois; Division of Environmental and Occupational Health Sciences (Mr Bressler and Drs Jacobs and Dorevitch) and Epidemiology and Biostatistics (Dr Awadalla), School of Public Health, and Institute for Environmental Science and Policy (Dr Dorevitch), University of Illinois at Chicago, Chicago, Illinois; National Center for Healthy Housing, Columbia, Maryland (Dr Jacobs); Jackson County Health Department, Murphysboro, Illinois (Mr Hagston); Kane County Health Department, Aurora, Illinois (Ms Onwuta); and Peoria City/County Health Department, Peoria, Illinois (Ms Panier)
| | - Saria S. Awadalla
- Department of Kinesiology and Community Health, (Dr Geiger), Groundwater Science Division, Illinois State Water Survey, Prairie Research Institute (Dr Kelly), University of Illinois at Urbana-Champaign, Champaign, Illinois; Division of Environmental and Occupational Health Sciences (Mr Bressler and Drs Jacobs and Dorevitch) and Epidemiology and Biostatistics (Dr Awadalla), School of Public Health, and Institute for Environmental Science and Policy (Dr Dorevitch), University of Illinois at Chicago, Chicago, Illinois; National Center for Healthy Housing, Columbia, Maryland (Dr Jacobs); Jackson County Health Department, Murphysboro, Illinois (Mr Hagston); Kane County Health Department, Aurora, Illinois (Ms Onwuta); and Peoria City/County Health Department, Peoria, Illinois (Ms Panier)
| | - Bart Hagston
- Department of Kinesiology and Community Health, (Dr Geiger), Groundwater Science Division, Illinois State Water Survey, Prairie Research Institute (Dr Kelly), University of Illinois at Urbana-Champaign, Champaign, Illinois; Division of Environmental and Occupational Health Sciences (Mr Bressler and Drs Jacobs and Dorevitch) and Epidemiology and Biostatistics (Dr Awadalla), School of Public Health, and Institute for Environmental Science and Policy (Dr Dorevitch), University of Illinois at Chicago, Chicago, Illinois; National Center for Healthy Housing, Columbia, Maryland (Dr Jacobs); Jackson County Health Department, Murphysboro, Illinois (Mr Hagston); Kane County Health Department, Aurora, Illinois (Ms Onwuta); and Peoria City/County Health Department, Peoria, Illinois (Ms Panier)
| | - Uche Onwuta
- Department of Kinesiology and Community Health, (Dr Geiger), Groundwater Science Division, Illinois State Water Survey, Prairie Research Institute (Dr Kelly), University of Illinois at Urbana-Champaign, Champaign, Illinois; Division of Environmental and Occupational Health Sciences (Mr Bressler and Drs Jacobs and Dorevitch) and Epidemiology and Biostatistics (Dr Awadalla), School of Public Health, and Institute for Environmental Science and Policy (Dr Dorevitch), University of Illinois at Chicago, Chicago, Illinois; National Center for Healthy Housing, Columbia, Maryland (Dr Jacobs); Jackson County Health Department, Murphysboro, Illinois (Mr Hagston); Kane County Health Department, Aurora, Illinois (Ms Onwuta); and Peoria City/County Health Department, Peoria, Illinois (Ms Panier)
| | - Carey Panier
- Department of Kinesiology and Community Health, (Dr Geiger), Groundwater Science Division, Illinois State Water Survey, Prairie Research Institute (Dr Kelly), University of Illinois at Urbana-Champaign, Champaign, Illinois; Division of Environmental and Occupational Health Sciences (Mr Bressler and Drs Jacobs and Dorevitch) and Epidemiology and Biostatistics (Dr Awadalla), School of Public Health, and Institute for Environmental Science and Policy (Dr Dorevitch), University of Illinois at Chicago, Chicago, Illinois; National Center for Healthy Housing, Columbia, Maryland (Dr Jacobs); Jackson County Health Department, Murphysboro, Illinois (Mr Hagston); Kane County Health Department, Aurora, Illinois (Ms Onwuta); and Peoria City/County Health Department, Peoria, Illinois (Ms Panier)
| | - Samuel Dorevitch
- Department of Kinesiology and Community Health, (Dr Geiger), Groundwater Science Division, Illinois State Water Survey, Prairie Research Institute (Dr Kelly), University of Illinois at Urbana-Champaign, Champaign, Illinois; Division of Environmental and Occupational Health Sciences (Mr Bressler and Drs Jacobs and Dorevitch) and Epidemiology and Biostatistics (Dr Awadalla), School of Public Health, and Institute for Environmental Science and Policy (Dr Dorevitch), University of Illinois at Chicago, Chicago, Illinois; National Center for Healthy Housing, Columbia, Maryland (Dr Jacobs); Jackson County Health Department, Murphysboro, Illinois (Mr Hagston); Kane County Health Department, Aurora, Illinois (Ms Onwuta); and Peoria City/County Health Department, Peoria, Illinois (Ms Panier)
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Rahbar MH, Samms-Vaughan M, Hessabi M, Bressler J, Gillani S, Grove ML, Shakspeare-Pellington S, Loveland KA. Correlation between concentrations of four heavy metals in cord blood and childhood blood of Jamaican children. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2021; 56:1196-1205. [PMID: 34542373 PMCID: PMC8788997 DOI: 10.1080/10934529.2021.1973821] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 08/23/2021] [Accepted: 08/23/2021] [Indexed: 06/13/2023]
Abstract
This study investigated whether the concentrations of four metals [lead (Pb), mercury (Hg), manganese (Mn), and aluminum (Al)] are correlated in cord blood and childhood blood samples from Jamaican children. Cord blood samples were obtained from 21 pregnant women enrolled in the second Jamaican Birth Cohort Study from July 1, 2011 to September 30, 2011, and blood samples were drawn from their children who participated in a follow up study when the children were 4-8 years old. Correlations were assessed by the Pearson or the Spearman's rank correlation coefficient. The mean ages of children at the childhood visit and their mother at the child's birth were 5.5 years and 29.8 years, respectively. About 47.6% of children were male. Statistically significant correlations between cord blood and childhood blood concentrations of Pb (rSpearman =0.45; P = 0.04) and Mn (rPearson=0.48; P = 0.03) were found, and these remained significant when adjusted for the child's sex, age, or both. For Al and Hg, rSpearman=0.29 and 0.08, respectively, but the correlations were not statistically significant (both P ≥ 0.20). A significant correlation between cord blood and childhood blood Pb concentrations for children 4-8 years old has not been previously reported.
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Affiliation(s)
- Mohamad H. Rahbar
- Department of Epidemiology, Human Genetics, and Environmental Sciences (EHGES), School of Public Health, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
- Biostatistics/Epidemiology/Research Design (BERD) component, Center for Clinical and Translational Sciences (CCTS), The University of Texas Health Science Center at Houston, Houston, Texas 77030, USA
- Division of Clinical and Translational Sciences, Department of Internal Medicine, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Maureen Samms-Vaughan
- Department of Child & Adolescent Health, The University of the West Indies (UWI), Mona Campus, Kingston 7, Jamaica
| | - Manouchehr Hessabi
- Biostatistics/Epidemiology/Research Design (BERD) component, Center for Clinical and Translational Sciences (CCTS), The University of Texas Health Science Center at Houston, Houston, Texas 77030, USA
| | - Jan Bressler
- Department of Epidemiology, Human Genetics, and Environmental Sciences (EHGES), School of Public Health, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
- Human Genetics Center, School of Public Health, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Shezeen Gillani
- Department of Epidemiology, Human Genetics, and Environmental Sciences (EHGES), School of Public Health, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
- Biostatistics/Epidemiology/Research Design (BERD) component, Center for Clinical and Translational Sciences (CCTS), The University of Texas Health Science Center at Houston, Houston, Texas 77030, USA
| | - Megan L. Grove
- Department of Epidemiology, Human Genetics, and Environmental Sciences (EHGES), School of Public Health, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
- Human Genetics Center, School of Public Health, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | | | - Katherine A. Loveland
- Louis A Faillace, MD, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77054, USA
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9
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Malavika L, Goyal T, Mitra P, Saikiran G, Sharma S, Sharma P. Risk Factors for Lead Toxicity and its Effect on Neurobehavior in Indian Children. Indian J Clin Biochem 2021; 37:294-302. [DOI: 10.1007/s12291-021-00995-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 07/22/2021] [Indexed: 11/29/2022]
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10
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Liao G, Wang P, Zhu J, Weng X, Lin S, Huang J, Xu Y, Zhou F, Zhang H, Tse LA, Zou F, Meng X. Joint toxicity of lead and cadmium on the behavior of zebrafish larvae: An antagonism. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2021; 238:105912. [PMID: 34303158 DOI: 10.1016/j.aquatox.2021.105912] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 07/08/2021] [Accepted: 07/12/2021] [Indexed: 06/13/2023]
Abstract
Although the individual toxicity of lead (Pb) and cadmium (Cd) was intensively studied, little is known about their joint toxicity on the development of circadian behavioral rhythm. Therefore, we co-exposed zebrafish to Pb and Cd to investigate the alterations of behavioral rhythm and the potential mechanism. Inductively coupled plasma mass spectrometry analysis was used to detect the internal exposure level of heavy metals. The behavioral rhythm was monitored by a video-track tracking system. The changes of gene expression regarding melatonin-related molecules and clock genes were analyzed by quantitative polymerase chain reaction and JTK-Cycle analysis. The results showed that the level of Pb2+ and Cd2+ accumulated in the co-exposure group were significantly lower than that in the Pb or Cd group. Exposed to Pb reduced the locomotor activity; the behavioral rhythms were disrupted by Cd, while the pattern in the co-exposure group showed an antagonistic effect on locomotor activity and behavioral rhythm. The expression rhythm of aanat1 was disturbed and the expression levels of mtnr1aa and mtnr1bb were decreased by co-exposure treatment, but mtnr1c was increased in Pb and Cd group, respectively. Exposure to Cd caused the disruption of expression rhythm in clock genes, like clock1b, clock2, and cry1b, while only the rhythm of clock2 was disrupted in the co-exposure group. The results suggest that the behavioral rhythm disruption caused by Cd exposure is associated with the disturbance of certain circadian genes, whereas Pb exposure only abates the locomotor activity; an antagonistic effect on the behavioral pattern when co-exposed zebrafish larvae to Pb and Cd.
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Affiliation(s)
- Gengze Liao
- Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong, China
| | - Peijun Wang
- Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong, China
| | - Jiawei Zhu
- Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong, China
| | - Xueqiong Weng
- Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong, China
| | - Shanshan Lin
- Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong, China
| | - Jingwen Huang
- Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong, China
| | - Yongjie Xu
- Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong, China
| | - Fan Zhou
- Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong, China
| | - Hongnan Zhang
- Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong, China
| | - Lap Ah Tse
- JC School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong SAR, China; CUHK Shenzhen Research Institute, Shenzhen, China
| | - Fei Zou
- Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong, China.
| | - Xiaojing Meng
- Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong, China.
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11
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L M, Mitra P, Goyal T, Abhilasha, Sharma S, Purohit P, Sharma P. Association of blood lead level with neurobehavior and neurotransmitter expressions in Indian children. Toxicol Rep 2021; 8:971-976. [PMID: 34026560 PMCID: PMC8122146 DOI: 10.1016/j.toxrep.2021.05.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 04/30/2021] [Accepted: 05/01/2021] [Indexed: 11/15/2022] Open
Abstract
BLL had a significant direct correlation with abnormal neurobehavior. Serum serotonin levels were significantly lower in children with high blood lead levels (BLL). Serum serotonin and dopamine receptor expression were upregulated in children with high BLL. Serum serotonin levels had significant negative association with adverse neurobehavior. Dopamine receptor expression had significant positive association with adverse neurobehavior.
Present study aimed to assess the alterations in neurotransmitter expression and its association with Blood Lead Level (BLL) and neurobehavioral pattern in children. 72 school going children were recruited. Blood lead levels were determined by Atomic Absorption Spectrophotometer. Neurobehavioral state was assessed by means of population specific scale i.e. CPMS (Childhood Psychopathological measurement Schedule). Serum serotonin and dopamine were estimated by ELISA, receptor and transporter gene expressions were assessed by quantitative real time PCR. Significant positive correlation was observed between Total CPMS score (i.e. adverse neurobehaviour) and BLL. Further, serum serotonin levels and dopamine receptor expression showed a negative and positive association with BLL, respectively. In similarity, serum serotonin levels showed a negative correlation and dopamine receptor expression had a significant positive correlation with total CPMS score. Environmental exposure to Lead (Pb) may result in significant alterations in the neurotransmitter levels which may be associated with neurobehavioral changes in the children exposed to Pb.
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Affiliation(s)
- Malavika L
- Department of Biochemistry, All India Institute of Medical Sciences, Jodhpur, India
| | - Prasenjit Mitra
- Department of Biochemistry, All India Institute of Medical Sciences, Jodhpur, India
| | - Taru Goyal
- Department of Biochemistry, All India Institute of Medical Sciences, Jodhpur, India
| | - Abhilasha
- Department of Biochemistry, All India Institute of Medical Sciences, Jodhpur, India
| | - Shailja Sharma
- Department of Biochemistry, All India Institute of Medical Sciences, Jodhpur, India
| | - Purvi Purohit
- Department of Biochemistry, All India Institute of Medical Sciences, Jodhpur, India
| | - Praveen Sharma
- Department of Biochemistry, All India Institute of Medical Sciences, Jodhpur, India
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12
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The effects of the exposure to neurotoxic elements on Italian schoolchildren behavior. Sci Rep 2021; 11:9898. [PMID: 33972598 PMCID: PMC8110539 DOI: 10.1038/s41598-021-88969-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 04/19/2021] [Indexed: 11/16/2022] Open
Abstract
Neurodevelopmental disorders are constantly increasing on a global scale. Some elements like heavy metals are known to be neurotoxic. In this cross-sectional study we assessed the neurobehavioral effect of the exposure to trace elements including lead, mercury, cadmium, manganese, arsenic and selenium and their interactions among 299 schoolchildren residing in the heavily polluted Taranto area in Italy. Whole blood, urine and hair were collected for metal analyses, while the Child Behavior Checklist and the Social Responsiveness Scale, administered to the main teacher and the mothers were considered to identify behavioral problems in children. Blood lead mainly influenced social problems, aggressive behavior, externalizing and total problems. Urinary arsenic showed an impact on anxiety and depression, somatic problems, attention problems and rule breaking behavior. A significant interaction between lead and arsenic was observed, with a synergistic effect of the two metals increasing the risk of attention problems, aggressive behavior, externalizing problems and total problems. Overall, we were able to test that higher blood lead, urinary arsenic concentrations and their interaction increase the risk of neurobehavioral problems. This is in line with the U.S. Environmental Protection Agency’s priority list of hazardous substances where arsenic and lead are ranked as first and second respectively.
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13
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Bjørklund G, Dadar M, Aaseth J, Chirumbolo S. Thymosin β4: A Multi-Faceted Tissue Repair Stimulating Protein in Heart Injury. Curr Med Chem 2021; 27:6294-6305. [PMID: 31333080 DOI: 10.2174/0929867326666190716125456] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Revised: 07/01/2019] [Accepted: 07/02/2019] [Indexed: 12/16/2022]
Abstract
Thymosin Beta-4 (Tβ4) is known as a major pleiotropic actin-sequestering protein that is involved in tumorigenesis. Tβ4 is a water-soluble protein that has different promising clinical applications in the remodeling and ulcerated tissues repair following myocardial infarction, stroke, plasticity and neurovascular remodeling of the Peripheral Nervous System (PNS) and the Central Nervous System (CNS). On the other hand, similar effects have been observed for Tβ4 in other kinds of tissues, including cardiac muscle tissue. In recent reports, as it activates resident epicardial progenitor cells and modulates inflammatory-caused injuries, Tβ4 has been suggested as a promoter of the survival of cardiomyocytes. Furthermore, Tβ4 may act in skeletal muscle and different organs in association/synergism with numerous other tissue repair stimulating factors, including melatonin and C-fiber-derived peptides. For these reasons, the present review highlights the promising role of Tβ4 in cardiac healing.
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Affiliation(s)
- Geir Bjørklund
- Council for Nutritional and Environmental Medicine, Mo i Rana, Norway
| | - Maryam Dadar
- Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
| | - Jan Aaseth
- Research Department, Innlandet Hospital Trust, Brumunddal, Norway,Inland Norway University of Applied Sciences, Elverum, Norway
| | - Salvatore Chirumbolo
- Department of Neurosciences, Biomedicine and Movement Sciences,
University of Verona, Verona, Italy
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14
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(Ascorb)ing Pb Neurotoxicity in the Developing Brain. Antioxidants (Basel) 2020; 9:antiox9121311. [PMID: 33371438 PMCID: PMC7767447 DOI: 10.3390/antiox9121311] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 12/16/2020] [Accepted: 12/17/2020] [Indexed: 12/21/2022] Open
Abstract
Lead (Pb) neurotoxicity is a major concern, particularly in children. Developmental exposure to Pb can alter neurodevelopmental trajectory and has permanent neuropathological consequences, including an increased vulnerability to further stressors. Ascorbic acid is among most researched antioxidant nutrients and has a special role in maintaining redox homeostasis in physiological and physio-pathological brain states. Furthermore, because of its capacity to chelate metal ions, ascorbic acid may particularly serve as a potent therapeutic agent in Pb poisoning. The present review first discusses the major consequences of Pb exposure in children and then proceeds to present evidence from human and animal studies for ascorbic acid as an efficient ameliorative supplemental nutrient in Pb poisoning, with a particular focus on developmental Pb neurotoxicity. In doing so, it is hoped that there is a revitalization for further research on understanding the brain functions of this essential, safe, and readily available vitamin in physiological states, as well to justify and establish it as an effective neuroprotective and modulatory factor in the pathologies of the nervous system, including developmental neuropathologies.
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15
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Gaman L, Delia CE, Luzardo OP, Zumbado M, Badea M, Stoian I, Gilca M, Boada LD, Henríquez-Hernández LA. Serum concentration of toxic metals and rare earth elements in children and adolescent. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2020; 30:696-712. [PMID: 31184504 DOI: 10.1080/09603123.2019.1626353] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 05/26/2019] [Indexed: 06/09/2023]
Abstract
Biomonitoring studies are important for quantifying the body burden of pollutants and their possible effects on health. Serum concentration of 42 elements was assessed by ICP-MS in 89 children (7.2 ± 3.4 years old) from Bucharest (Romania). Levels of pollutants were compared with the clinical data obtained from routine blood tests. Clinical parameters were in the physiological range. Deficiencies of manganese, selenium, and zinc were discovered. Blood levels of elements were low. The highest levels were observed among children younger than six years. The sum of iron, selenium, barium, nickel, antimony, and cerium was positively associated with hemoglobin (Spearman rho = 0.217, P-value = 0.041), while the sum of copper, thallium, niobium, and tantalum was negatively associated (Spearman rho = -0.228, P-value = 0.032). Given the inherent sensitivity of the child population, additional studies are needed to assess the effects of these elements on their health.
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Affiliation(s)
- Laura Gaman
- Faculty of Medicine, University of Medicine and Pharmacy Carol Davila , Bucharest, Romania
| | - Corina Elena Delia
- Department of Fundamental, Prophylactic and Clinical Disciplines, Alfred Rusescu Institute for Mother and Child Care , Bucharest, Romania
| | - Octavio P Luzardo
- Toxicology Unit, Research Institute of Biomedical and Health Sciences (IUIBS), Department of Clinical Sciences, Universidad de Las Palmas de Gran Canaria , Las Palmas de Gran Canaria, Spain
| | - Manuel Zumbado
- Toxicology Unit, Research Institute of Biomedical and Health Sciences (IUIBS), Department of Clinical Sciences, Universidad de Las Palmas de Gran Canaria , Las Palmas de Gran Canaria, Spain
| | - Mihaela Badea
- Faculty of Medicine, Transilvania University of Brasov , Brasov, Romania
| | - Irina Stoian
- Faculty of Medicine, University of Medicine and Pharmacy Carol Davila , Bucharest, Romania
| | - Marilena Gilca
- Faculty of Medicine, University of Medicine and Pharmacy Carol Davila , Bucharest, Romania
| | - Luis D Boada
- Toxicology Unit, Research Institute of Biomedical and Health Sciences (IUIBS), Department of Clinical Sciences, Universidad de Las Palmas de Gran Canaria , Las Palmas de Gran Canaria, Spain
| | - Luis Alberto Henríquez-Hernández
- Toxicology Unit, Research Institute of Biomedical and Health Sciences (IUIBS), Department of Clinical Sciences, Universidad de Las Palmas de Gran Canaria , Las Palmas de Gran Canaria, Spain
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16
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Bush NR, Wakschlag LS, LeWinn KZ, Hertz-Picciotto I, Nozadi SS, Pieper S, Lewis J, Biezonski D, Blair C, Deardorff J, Neiderhiser JM, Leve LD, Elliott AJ, Duarte CS, Lugo-Candelas C, O’Shea TM, Avalos LA, Page GP, Posner J. Family Environment, Neurodevelopmental Risk, and the Environmental Influences on Child Health Outcomes (ECHO) Initiative: Looking Back and Moving Forward. Front Psychiatry 2020; 11:547. [PMID: 32636769 PMCID: PMC7318113 DOI: 10.3389/fpsyt.2020.00547] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 05/27/2020] [Indexed: 12/11/2022] Open
Abstract
The family environment, with all its complexity and diverse components, plays a critical role in shaping neurodevelopmental outcomes in children. Herein we review several domains of the family environment (family socioeconomic status, family composition and home environment, parenting behaviors and interaction styles, parental mental health and functioning, and parental substance use) and discuss how these domains influence neurodevelopment, with particular emphasis on mental health outcomes. We also highlight a new initiative launched by the National Institutes of Health, the Environmental influences on Child Health Outcomes (ECHO) program. We discuss the role that ECHO will play in advancing our understanding of the impact of the family environment on children's risk for psychiatric outcomes. Lastly, we conclude with important unanswered questions and controversies in this area of research, highlighting how ECHO will contribute to resolving these gaps in our understanding, clarifying relationships between the family environment and children's mental health.
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Affiliation(s)
- Nicole R. Bush
- Department of Psychiatry, Weill Institute for Neurosciences, University of California, San Francisco, CA, United States
- Department of Pediatrics, University of California, San Francisco, CA, United States
| | - Lauren S. Wakschlag
- Department of Medical Social Sciences and Institute for Innovations in Developmental Sciences, Northwestern University, Chicago, Il, United States
| | - Kaja Z. LeWinn
- Department of Psychiatry, Weill Institute for Neurosciences, University of California, San Francisco, CA, United States
| | - Irva Hertz-Picciotto
- Department of Public Health Sciences, University of California, Davis, Davis, CA, United States
| | - Sara S. Nozadi
- Community Environmental Health Program, College of Pharmacy, University of New Mexico Health Sciences Center, Albuquerque, NM, United States
| | - Sarah Pieper
- Division of Child and Adolescent Psychiatry, Columbia University, New York, NY, United States
| | - Johnnye Lewis
- Community Environmental Health Program, College of Pharmacy, University of New Mexico Health Sciences Center, Albuquerque, NM, United States
| | - Dominik Biezonski
- Division of Child and Adolescent Psychiatry, Columbia University, New York, NY, United States
| | - Clancy Blair
- Department of Population Health, New York University, New York, NY, United States
| | - Julianna Deardorff
- Community Health Sciences, University of California, Berkeley, Berkeley, CA, United States
| | - Jenae M. Neiderhiser
- Department of Psychology, Penn State University, University Park, PA, United States
| | - Leslie D. Leve
- Prevention Science Institute, University of Oregon, Eugene, OR, United States
| | - Amy J. Elliott
- Center for Pediatric and Community Research, Avera Research Institute, Sioux Falls, SD, United States
| | - Cristiane S. Duarte
- Division of Child and Adolescent Psychiatry, Columbia University, New York, NY, United States
| | - Claudia Lugo-Candelas
- Division of Child and Adolescent Psychiatry, Columbia University, New York, NY, United States
| | - T. Michael O’Shea
- Department of Pediatrics, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Lyndsay A. Avalos
- Division of Research, Kaiser Permanente Northern California, Oakland, CA, United States
| | - Grier P. Page
- Department of Biostatistics and Epidemiology, RTI, Atlanta, GA, United States
| | - Jonathan Posner
- Division of Child and Adolescent Psychiatry, Columbia University, New York, NY, United States
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17
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Weng JC, Hong CI, Tasi JD, Shen CY, Su PH, Wang SL. The association between prenatal endocrine-disrupting chemical exposure and altered resting-state brain fMRI in teenagers. Brain Struct Funct 2020; 225:1669-1684. [PMID: 32448957 DOI: 10.1007/s00429-020-02089-4] [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: 01/23/2019] [Accepted: 05/13/2020] [Indexed: 12/27/2022]
Abstract
Many studies have reported that prenatal exposure to endocrine-disrupting chemicals (EDCs) can cause adverse behavioral effects or cognitive dysfunction in children. This study aimed to investigate a relationship of the concentration of prenatal EDCs and brain function in teenagers. We recruited 59 mother-child pairs during the third trimester of pregnancy, and collected and examined the concentration of EDCs, such as heavy metals, phthalates and perfluoroalkyl substances (PFASs), in maternal urine and serum. Resting-state functional magnetic resonance imaging (rs-fMRI) data were collected in teenagers 13-16 years of age, and fractional amplitude of low-frequency fluctuation (fALFF) and regional homogeneity (ReHo) were performed to find the association between maternal EDC concentrations and the functional development of the teenage brain. We found a correlation between MBP concentration and activity in the superior frontal gyrus, middle frontal gyrus, middle temporal gyrus and inferior temporal gyrus in the combined group of boys and girls. We also observed a correlation between MBzP concentration and activity in the anterior cingulum gyrus and insula in girls. We found a correlation between lead concentration and activity in the cuneus in the combined group. We also observed a correlation between MeHg concentration and activity in the superior temporal gyrus, caudate nucleus and putamen in the combined group. The PFOS results revealed a negative relationship between activity in the right putamen in boys, girls and the combined group after phthalate or heavy metals were applied as covariates. The PFNA results showed a negative correlation between activity in the left/right putamen and left caudate nucleus in boys, girls and the combined group after phthalate, heavy metals or PFOS were applied as covariates. We examined the correlations between maternal EDC concentrations and brain development and found that the associations with resting-state teenage brains in some circumstances are sex-related.
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Affiliation(s)
- Jun-Cheng Weng
- Department of Medical Imaging and Radiological Sciences, Chang Gung University, Taoyuan, Taiwan.,Medical Imaging Research Center, Institute for Radiological Research, Chang Gung University and Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan.,Department of Psychiatry, Chang Gung Memorial Hospital, Chiayi, Taiwan
| | - Chi Ieong Hong
- Department of Medical Imaging and Radiological Sciences, Chung Shan Medical University, Taichung, Taiwan
| | - Jeng-Dau Tasi
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan.,Department of Pediatrics, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Chao-Yu Shen
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan.,Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan.,Department of Medical Imaging, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Pen-Hua Su
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan.,Department of Pediatrics, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Shu-Li Wang
- National Institute of Environmental Health Sciences, National Health Research Institutes, 35 Keyan Rd., Zhunan, Miaoli County 350, Taiwan.
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18
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Pre- and Neonatal Exposure to Lead (Pb) Induces Neuroinflammation in the Forebrain Cortex, Hippocampus and Cerebellum of Rat Pups. Int J Mol Sci 2020; 21:ijms21031083. [PMID: 32041252 PMCID: PMC7037720 DOI: 10.3390/ijms21031083] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 02/01/2020] [Accepted: 02/03/2020] [Indexed: 12/11/2022] Open
Abstract
Lead (Pb) is a heavy metal with a proven neurotoxic effect. Exposure is particularly dangerous to the developing brain in the pre- and neonatal periods. One postulated mechanism of its neurotoxicity is induction of inflammation. This study analyzed the effect of exposure of rat pups to Pb during periods of brain development on the concentrations of selected cytokines and prostanoids in the forebrain cortex, hippocampus and cerebellum. Methods: Administration of 0.1% lead acetate (PbAc) in drinking water ad libitum, from the first day of gestation to postnatal day 21, resulted in blood Pb in rat pups reaching levels below the threshold considered safe for humans by the Centers for Disease Control and Prevention (10 µg/dL). Enzyme-linked immunosorbent assay (ELISA) method was used to determine the levels of interleukins IL-1β, IL-6, transforming growth factor-β (TGF-β), prostaglandin E2 (PGE2) and thromboxane B2 (TXB2). Western blot and quantitative real-time PCR were used to determine the expression levels of cyclooxygenases COX-1 and COX-2. Finally, Western blot was used to determine the level of nuclear factor kappa B (NF-κB). Results: In all studied brain structures (forebrain cortex, hippocampus and cerebellum), the administration of Pb caused a significant increase in all studied cytokines and prostanoids (IL-1β, IL-6, TGF-β, PGE2 and TXB2). The protein and mRNA expression of COX-1 and COX-2 increased in all studied brain structures, as did NF-κB expression. Conclusions: Chronic pre- and neonatal exposure to Pb induces neuroinflammation in the forebrain cortex, hippocampus and cerebellum of rat pups.
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19
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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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20
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Nilsen FM, Tulve NS. A systematic review and meta-analysis examining the interrelationships between chemical and non-chemical stressors and inherent characteristics in children with ADHD. ENVIRONMENTAL RESEARCH 2020; 180:108884. [PMID: 31706600 PMCID: PMC6937727 DOI: 10.1016/j.envres.2019.108884] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 09/25/2019] [Accepted: 10/29/2019] [Indexed: 05/05/2023]
Abstract
Children may be more vulnerable to the combined interactions of chemical and non-chemical stressors from their built, natural, and social environments when compared to adults. Attention deficit/hyperactivity disorder (ADHD) is the most commonly diagnosed childhood neurodevelopmental disorder and is considered a major public health issue, as 75% of childhood cases persist into adulthood. ADHD is characterized by developmentally inappropriate levels of hyperactivity, impulsivity, and inattention, with the neurotransmitter serotonin regulating these symptoms. Monoamine oxidase A (MAOA) aids in serotonin uptake and is often implicated in behavioral and emotional disorders, including ADHD. When children are exposed to cigarette smoke, bisphenol A (BPA), or organophosphate pesticides, MAOA activity is inhibited. Non-chemical stressors, such as traumatic childhood experiences, and lifestyle factors, complicate the relationship between genotype and exposures to chemical stressors. But the co-occurrence among outcomes between exposures to chemical stressors, non-chemical stressors, and the low activity MAOA genotype suggest that mental illness in children may be influenced by multiple interacting factors. In this systematic review, we examine the existing literature that combines exposures to chemical and non-chemical stressors (specifically childhood trauma), MAOA characteristics, and ADHD diagnosis to investigate the interrelationships present. We observe that chemical (lead [Pb], phthalates/plasticizers, persistent organic pollutants, and cigarette smoke) exposure is significantly related to ADHD in children. We also observed that existing literature examining the interaction between MAOA, exposures to chemical stressors, and traumatic experiences and their effect on ADHD outcomes is sparse. We recommend that future studies investigating childhood ADHD include chemical and non-chemical stressors and inherent characteristics to gain a holistic understanding of childhood mental health outcomes.
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Affiliation(s)
- Frances M Nilsen
- Oak Ridge Institute for Science and Education Post-Doctoral Participant, U.S. EPA, Office of Research and Development, National Exposure Research Laboratory, 109 TW Alexander Dr., Research Triangle Park, NC, USA.
| | - Nicolle S Tulve
- U.S. EPA, Office of Research and Development, National Exposure Research Laboratory, 109 TW Alexander Dr., Research Triangle Park, NC, USA.
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21
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Dórea JG. Environmental exposure to low-level lead (Pb) co-occurring with other neurotoxicants in early life and neurodevelopment of children. ENVIRONMENTAL RESEARCH 2019; 177:108641. [PMID: 31421445 DOI: 10.1016/j.envres.2019.108641] [Citation(s) in RCA: 108] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Revised: 08/08/2019] [Accepted: 08/08/2019] [Indexed: 06/10/2023]
Abstract
Lead (Pb) is a worldwide environmental contaminant that even at low levels influences brain development and affects neurobehavior later in life; nevertheless it is only a small fraction of the neurotoxicant (NT) exposome. Exposure to environmental Pb concurrent with other NT substances is often the norm, but their joint effects are challenging to study during early life. The aim of this review is to integrate studies of Pb-containing NT mixtures during the early life and neurodevelopment outcomes of children. The Pb-containing NT mixtures that have been most studied involve other metals (Mn, Al, Hg, Cd), metalloids (As), halogen (F), and organo-halogen pollutants. Co-occurring Pb-associated exposures during pregnancy and lactation depend on the environmental sources and the metabolism and half-life of the specific NT contaminant; but offspring neurobehavioral outcomes are also influenced by social stressors. Nevertheless, Pb-associated effects from prenatal exposure portend a continued burden on measurable neurodevelopment; they thus favor increased neurological health issues, decrements in neurobehavioral tests and reductions in the quality of life. Neurobehavioral test outcomes measured in the first 1000 days showed Pb-associated negative outcomes were frequently noticed in infants (<6 months). In older (preschool and school) children studies showed more variations in NT mixtures, children's age, and sensitivity and/or specificity of neurobehavioral tests; these variations and choice of statistical model (individual NT stressor or collective effect of mixture) may explain inconsistencies. Multiple exposures to NT mixtures in children diagnosed with 'autism spectrum disorders' (ASD) and 'attention deficit and hyperactivity disorders' (ADHD), strongly suggest a Pb-associated effect. Mixture potency (number or associated NT components and respective concentrations) and time (duration and developmental stage) of exposure often showed a measurable impact on neurodevelopment; however, net effects, reversibility and/or predictability of delays are insufficiently studied and need urgent attention. Nevertheless, neurodevelopment delays can be prevented and/or attenuated if public health policies are implemented to protect the unborn and the young child.
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Affiliation(s)
- José G Dórea
- Universidade de Brasília, Brasília, 70919-970, DF, Brazil.
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22
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Perez-Fernandez C, Flores P, Sánchez-Santed F. A Systematic Review on the Influences of Neurotoxicological Xenobiotic Compounds on Inhibitory Control. Front Behav Neurosci 2019; 13:139. [PMID: 31333425 PMCID: PMC6620897 DOI: 10.3389/fnbeh.2019.00139] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 06/06/2019] [Indexed: 01/24/2023] Open
Abstract
Background: Impulsive and compulsive traits represent a variety of maladaptive behaviors defined by the difficulties to stop an improper response and the control of a repeated behavioral pattern without sensitivity to changing contingencies, respectively. Otherwise, human beings are continuously exposed to plenty neurotoxicological agents which have been systematically linked to attentional, learning, and memory dysfunctions, both preclinical and clinical studies. Interestingly, the link between both impulsive and compulsive behaviors and the exposure to the most important xenobiotic compounds have been extensively developed; although the information has been rarely summarized. For this, the present systematic review schedule and analyze in depth the most important works relating different subtypes of the above-mentioned behaviors with 4 of the most important xenobiotic compounds: Lead (Pb), Methylmercury (MeHg), Polychlorinated biphenyls (PCB), and Organophosphates (OP) in both preclinical and clinical models. Methods: Systematic search strategy on PubMed databases was developed, and the most important information was structured both in text and in separate tables based on rigorous methodological quality assessment. Results: For Lead, Methylmercury, Polychlorinated biphenyls and organophosphates, a total of 44 (31 preclinical), 34 (21), 38 (23), and 30 (17) studies were accepted for systematic synthesis, respectively. All the compounds showed an important empirical support on their role in the modulation of impulsive and, in lesser degree, compulsive traits, stronger and more solid in animal models with inconclusive results in humans in some cases (i.e., MeHg). However, preclinical and clinical studies have systematically focused on different subtypes of the above-mentioned behaviors, as well as impulsive choice or habit conformations have been rarely studied. Discussion: The strong empirical support in preclinical studies contrasts with the lack of connection between preclinical and clinical models, as well as the different methodologies used. Further research should be focused on dissipate these differences as well as deeply study impulsive choice, decision making, risk taking, and cognitive flexibility, both in experimental animals and humans.
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Affiliation(s)
| | - Pilar Flores
- Department of Psychology and Health Research Center, University of Almería, Almería, Spain
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23
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Rocha A, Trujillo KA. Neurotoxicity of low-level lead exposure: History, mechanisms of action, and behavioral effects in humans and preclinical models. Neurotoxicology 2019; 73:58-80. [PMID: 30836127 PMCID: PMC7462347 DOI: 10.1016/j.neuro.2019.02.021] [Citation(s) in RCA: 94] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 02/26/2019] [Accepted: 02/27/2019] [Indexed: 12/20/2022]
Abstract
Lead is a neurotoxin that produces long-term, perhaps irreversible, effects on health and well-being. This article summarizes clinical and preclinical studies that have employed a variety of research techniques to examine the neurotoxic effects of low levels of lead exposure. A historical perspective is presented, followed by an overview of studies that examined behavioral and cognitive outcomes. In addition, a short summary of potential mechanisms of action is provided with a focus on calcium-dependent processes. The current level of concern, or reference level, set by the CDC is 5 μg/dL of lead in blood and a revision to 3.5 μg/dL has been suggested. However, levels of lead below 3 μg/dL have been shown to produce diminished cognitive function and maladaptive behavior in humans and animal models. Because much of the research has focused on higher concentrations of lead, work on low concentrations is needed to better understand the neurobehavioral effects and mechanisms of action of this neurotoxic metal.
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MESH Headings
- Adolescent
- Adolescent Behavior/drug effects
- Adolescent Development/drug effects
- Adult
- Age Factors
- Aged
- Animals
- Brain/drug effects
- Brain/growth & development
- Child
- Child Behavior/drug effects
- Child Development/drug effects
- Child, Preschool
- Cognition/drug effects
- Dose-Response Relationship, Drug
- History, 20th Century
- History, 21st Century
- Humans
- Lead Poisoning, Nervous System, Adult/history
- Lead Poisoning, Nervous System, Adult/physiopathology
- Lead Poisoning, Nervous System, Adult/psychology
- Lead Poisoning, Nervous System, Childhood/history
- Lead Poisoning, Nervous System, Childhood/physiopathology
- Lead Poisoning, Nervous System, Childhood/psychology
- Mice
- Middle Aged
- Rats
- Risk Assessment
- Risk Factors
- Toxicity Tests
- Young Adult
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Affiliation(s)
- Angelica Rocha
- California State University San Marcos, San Marcos, CA 92069, USA.
| | - Keith A Trujillo
- California State University San Marcos, San Marcos, CA 92069, USA
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Hessabi M, Rahbar MH, Dobrescu I, Bach MA, Kobylinska L, Bressler J, Grove ML, Loveland KA, Mihailescu I, Nedelcu MC, Moisescu MG, Matei BM, Matei CO, Rad F. Concentrations of Lead, Mercury, Arsenic, Cadmium, Manganese, and Aluminum in Blood of Romanian Children Suspected of Having Autism Spectrum Disorder. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:E2303. [PMID: 31261817 PMCID: PMC6651707 DOI: 10.3390/ijerph16132303] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 06/24/2019] [Accepted: 06/25/2019] [Indexed: 12/15/2022]
Abstract
Environmental exposure to lead (Pb), mercury (Hg), arsenic (As), cadmium (Cd), manganese (Mn), and aluminum (Al) has been associated with neurodevelopmental disorders including autism spectrum disorder (ASD). We conducted a pilot study during May 2015-May 2107 to estimate blood concentrations of six metals (Pb, Hg, As, Cd, Mn, and Al) and identify their associated factors for children with ASD or suspected of having ASD in Romania. Sixty children, age 2-8 years, were administered versions of ADOS or ADI-R translated from English to Romanian. After assessment, 2-3 mL of blood was obtained and analyzed for the concentrations of the six metals. The mean age of children was 51.9 months and about 90% were male. More than half (65%) of the children were born in Bucharest. Over 90% of concentrations of As and Cd were below limits of detection. Geometric mean concentrations of Pb, Mn, Al, and Hg were 1.14 μg/dL, 10.84 μg/L, 14.44 μg/L, and 0.35 μg/L, respectively. Multivariable linear regression analysis revealed that children who were female, had less educated parents, exhibited pica, and ate cold breakfast (e.g., cereal), watermelon, and lamb had significantly higher concentrations of Pb compared to their respective referent categories (all p < 0.05 except for eating lamb, which was marginally significant, p = 0.053). Although this is the first study that provides data on concentrations of the six metals for Romanian children with ASD, the findings from this study could be useful for designing future epidemiologic studies for investigating the role of these six metals in ASD in Romanian children.
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Affiliation(s)
- Manouchehr Hessabi
- Biostatistics/Epidemiology/Research Design (BERD) core, Center for Clinical and Translational Sciences (CCTS), The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Mohammad H Rahbar
- Biostatistics/Epidemiology/Research Design (BERD) core, Center for Clinical and Translational Sciences (CCTS), The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
- Department of Epidemiology, Human Genetics, and Environmental Sciences, School of Public Health, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
- Division of Clinical and Translational Sciences, Department of Internal Medicine, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Iuliana Dobrescu
- Department of Child and Adolescent Psychiatry, University of Medicine and Pharmacy of Carol Davila, Psychiatry Clinical Hospital Alexandru Obregia, Bucharest, sector 4, 041914, Romania
| | - MacKinsey A Bach
- Biostatistics/Epidemiology/Research Design (BERD) core, Center for Clinical and Translational Sciences (CCTS), The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
- Department of Epidemiology, Human Genetics, and Environmental Sciences, School of Public Health, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Liana Kobylinska
- Department of Child and Adolescent Psychiatry, University of Medicine and Pharmacy of Carol Davila, Psychiatry Clinical Hospital Alexandru Obregia, Bucharest, sector 4, 041914, Romania
| | - Jan Bressler
- Department of Epidemiology, Human Genetics, and Environmental Sciences, School of Public Health, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
- Human Genetics Center, School of Public Health, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Megan L Grove
- Department of Epidemiology, Human Genetics, and Environmental Sciences, School of Public Health, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
- Human Genetics Center, School of Public Health, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Katherine A Loveland
- Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77054, USA
| | - Ilinca Mihailescu
- Department of Child and Adolescent Psychiatry, University of Medicine and Pharmacy of Carol Davila, Psychiatry Clinical Hospital Alexandru Obregia, Bucharest, sector 4, 041914, Romania
| | - Maria Cristina Nedelcu
- Department of Child and Adolescent Psychiatry, University of Medicine and Pharmacy of Carol Davila, Psychiatry Clinical Hospital Alexandru Obregia, Bucharest, sector 4, 041914, Romania
| | - Mihaela Georgeta Moisescu
- Department of Biophysics and Cellular Biotechnology, University of Medicine and Pharmacy of Carol Davila, Bucharest, sector 5, 050747, Romania
| | - Bogdan Mircea Matei
- Department of Biophysics and Cellular Biotechnology, University of Medicine and Pharmacy of Carol Davila, Bucharest, sector 5, 050747, Romania
| | - Christien Oktaviani Matei
- Department of Biophysics and Cellular Biotechnology, University of Medicine and Pharmacy of Carol Davila, Bucharest, sector 5, 050747, Romania
| | - Florina Rad
- Department of Child and Adolescent Psychiatry, University of Medicine and Pharmacy of Carol Davila, Psychiatry Clinical Hospital Alexandru Obregia, Bucharest, sector 4, 041914, Romania.
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25
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Wang Y, Hu D, Chen W, Xue H, Du Y. Prenatal Tobacco Exposure Modulated the Association of Genetic variants with Diagnosed ADHD and its symptom domain in children: A Community Based Case-Control Study. Sci Rep 2019; 9:4274. [PMID: 30862909 PMCID: PMC6414688 DOI: 10.1038/s41598-019-40850-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 02/25/2019] [Indexed: 12/28/2022] Open
Abstract
The purpose of our study was to test the hypothesis that prenatal tobacco smoking exposure (PSE) could modulate the association of genetic variants with ADHD. A community based case-control study was conducted among Chinese children and 168 ADHD patients and 233 controls were recruited by using combination diagnosis of DSM-IV, SNAP-IV and semi-structured clinical interview. Logistic regression analysis was performed to estimate the effect of prenatal tobacco smoking exposure and genotype frequencies on ADHD susceptibility individually by adjustment for potential confounders. Multiplicative and additive interaction analysis were performed to evaluate the interactions between risk genes and PSE with regard to ADHD. Prenatal tobacco smoke exposure was a significant risk factor of ADHD even after adjusted for other potential confounders. ADRA2A rs553668, DRD2 rs1124491 and SLC6A4 rs6354 were identified to be associated with ADHD. A significant multiplicative and additive gene-environment interactions were observed between the PSE and the ADRA2A rs553668 in relation to ADHD and ADHD-ODD. The risk of the genetic variants in ADHD was increased significantly if the child had prenatal tobacco exposure. The genetic risk for ADHD could be influenced by the presence of environmental risks. The environmental and the genetic risks are not distinct to each other. More gene-environment interaction studies were needed to reveal the etiology of ADHD.
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Affiliation(s)
- Yanni Wang
- Department of Maternal and Child Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, P. R. China
- Department of Maternal, Child and Adolescent Health, School of Public Health, Lanzhou University, Lanzhou, Gansu, P. R. China
| | - Dan Hu
- Department of Child Health Care, Hospital of Maternal and Child Health of Dalian, Dalian, Liaoning, P. R. China
| | - Wenjing Chen
- Department of Maternal and Child Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, P. R. China
| | - Hongli Xue
- Department of Maternal, Child and Adolescent Health, School of Public Health, Lanzhou University, Lanzhou, Gansu, P. R. China
| | - Yukai Du
- Department of Maternal and Child Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, P. R. China.
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26
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Dórea JG. Multiple low-level exposures: Hg interactions with co-occurring neurotoxic substances in early life. Biochim Biophys Acta Gen Subj 2018; 1863:129243. [PMID: 30385391 DOI: 10.1016/j.bbagen.2018.10.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 10/01/2018] [Accepted: 10/19/2018] [Indexed: 12/11/2022]
Abstract
All chemical forms of Hg can affect neurodevelopment; however, low levels of organic Hg (methylmercury-MeHg and ethylmercury-EtHg in Thimerosal-containing vaccines, hereafter 'TCV') exposures during early life (pregnancy and lactation) co-occur with other environmental neurotoxic substances. These neurotoxicants may act in parallel, synergistically, or antagonistically to Hg. Nevertheless, the risks of neurotoxicity associated with multiple neuro-toxicants depend on type, time, combinations of exposure, and environmental and/or genetic-associated factors. Neurological developmental disorders, delays in cognition and behavioral outcomes associated with multiple exposures (which include Hg) may show transient or lasting outcomes depending on constitutional and/or environmental factors that can interact to neutralize, aggravate or attenuate these effects; often these studies are challenging to interpret. During pregnancy and lactation, fish-MeHg exposure is frequently confounded with the opposing effects of neuroactive nutrients (in fish) that lead to positive, negative, or no effects on neurobehavioral tests. In infancy, exposures to acute binary mixtures (TCV- EtHg and Al-adjuvants in infant immunizations) are associated with increased risks of tics and other developmental disorders. Despite the certitude that promulgates single environmental neurotoxicants, empirical comparisons of combined exposures indicate that Hg-related outcome is uneven. Hg in combination with other neurotoxic mixtures may elevate risks of neurotoxicity, but these risks arise in circumstances that are not yet predictable. Therefore, to achieve the goals of the Minamata treaty and to safeguard the health of children, low levels of mercury exposure (in any chemical form) needs to be further reduced whether the source is environmental (air- and food-borne) or iatrogenic (pediatric TCVs).
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Affiliation(s)
- José G Dórea
- Universidade de Brasília, Brasília 70919-970, DF, Brazil..
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27
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Oliveira CS, Nogara PA, Ardisson-Araújo DMP, Aschner M, Rocha JBT, Dórea JG. Neurodevelopmental Effects of Mercury. ADVANCES IN NEUROTOXICOLOGY 2018; 2:27-86. [PMID: 32346667 PMCID: PMC7188190 DOI: 10.1016/bs.ant.2018.03.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The toxicology of mercury (Hg) is of concern since this metal is ubiquitously distributed in the environment, and living organisms are routinely exposed to Hg at low to high levels. The toxic effects of Hg are well studied and it is known that they may differ depending on the Hg chemical species. In this chapter, we emphasize the neurotoxic effects of Hg during brain development. The immature brain is more susceptible to Hg exposure, since all the Hg chemical forms, not only the organic ones, can harm it. The possible consequences of Hg exposure during the early stages of development, the additive effects with other co-occurring neurotoxicants, and the known mechanisms of action and targets will be addressed in this chapter.
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Affiliation(s)
- Cláudia S Oliveira
- Programa de Pós-graduação em Ciências Biológicas: Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Pablo A Nogara
- Programa de Pós-graduação em Ciências Biológicas: Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Daniel M P Ardisson-Araújo
- Programa de Pós-graduação em Ciências Biológicas: Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
- Laboratório de Virologia de Insetos, Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York, NY, USA
| | - João B T Rocha
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - José G Dórea
- Professor Emeritus, Faculdade de Ciências da Saúde, Universidade de Brasília, Brasília, DF, Brazil
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28
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Santa Maria MP, Hill BD, Kline J. Lead (Pb) neurotoxicology and cognition. APPLIED NEUROPSYCHOLOGY-CHILD 2018; 8:272-293. [DOI: 10.1080/21622965.2018.1428803] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
| | - Benjamin D. Hill
- Department of Psychology, University of South Alabama, Mobile, AL, USA
| | - Joshua Kline
- Department of Psychology, University of South Alabama, Mobile, AL, USA
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29
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Geier DA, Kern JK, Geier MR. A cross-sectional study of the relationship between blood lead levels and reported attention deficit disorder: an assessment of the economic impact on the United States. Metab Brain Dis 2018; 33:201-208. [PMID: 29134344 DOI: 10.1007/s11011-017-0146-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 11/07/2017] [Indexed: 10/18/2022]
Abstract
Attention deficit disorder (ADD) is characterized by a pattern of inattention and/or impulsivity that is inconsistent with developmental level and interferes with normal functioning in at least two settings. A recent meta-analysis suggested a significant relationship between lead (Pb) exposure and attention deficit symptoms. This study evaluated the potential relationship between increasing blood Pb levels and the risk of a reported ADD diagnosis. This cross-sectional study examined a sample of 2109 persons (32,762,158 weighted-persons) between 10 and 19 years-old from the 2003-2004 National Health and Nutritional Examination Survey (NHANES). This study analyzed demographic, socioeconomic, health related-questions, and laboratory tests using survey logistic and frequency modeling in SAS. On a microgram (μg)/deciliter (dL) basis, a significant dose-response relationship between increasing blood Pb levels and the risk of a reported ADD outcome was confirmed (odds ratio (OR) = 1.237, p = 0.0227). The relationship between increasing blood Pb levels and the risk of a reported ADD remained consistent when examining covariates such as gender, race, and socioeconomic status (OR = 1.292, p = 0.0301). Control outcomes selected on an a priori basis to not be biologically plausibly linked to blood Pb levels showed no relationship with increasing blood Pb levels. This NHANES analysis revealed an estimated 380,000 persons born in the United States (US) from 1984 to 1993 were reported to have an ADD outcome as a consequence of elevated blood Pb levels and the excess lifetime costs of these persons would be about US $100 billion. Every effort should be made to eliminate childhood Pb exposure.
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Affiliation(s)
- David A Geier
- Institute of Chronic Illnesses, Inc, 14 Redgate Ct, Silver Spring, MD, 20905, USA
- CoMeD, Inc., Silver Spring, MD, USA
| | - Janet K Kern
- Institute of Chronic Illnesses, Inc, 14 Redgate Ct, Silver Spring, MD, 20905, USA.
- CoMeD, Inc., Silver Spring, MD, USA.
- CONEM US Autism Research Group, Allen, TX, USA.
| | - Mark R Geier
- Institute of Chronic Illnesses, Inc, 14 Redgate Ct, Silver Spring, MD, 20905, USA
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30
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Glycogen metabolism in brain and neurons - astrocytes metabolic cooperation can be altered by pre- and neonatal lead (Pb) exposure. Toxicology 2017; 390:146-158. [PMID: 28916327 DOI: 10.1016/j.tox.2017.09.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 08/28/2017] [Accepted: 09/07/2017] [Indexed: 11/22/2022]
Abstract
Lead (Pb) is an environmental neurotoxin which particularly affects the developing brain but the molecular mechanism of its neurotoxicity still needs clarification. The aim of this paper was to examine whether pre- and neonatal exposure to Pb (concentration of Pb in rat offspring blood below the "threshold level") may affect the brain's energy metabolism in neurons and astrocytes via the amount of available glycogen. We investigated the glycogen concentration in the brain, as well as the expression of the key enzymes involved in glycogen metabolism in brain: glycogen synthase 1 (Gys1), glycogen phosphorylase (PYGM, an isoform active in astrocytes; and PYGB, an isoform active in neurons) and phosphorylase kinase β (PHKB). Moreover, the expression of connexin 43 (Cx43) was evaluated to analyze whether Pb poisoning during the early phase of life may affect the neuron-astrocytes' metabolic cooperation. This work shows for the first time that exposure to Pb in early life can impair brain energy metabolism by reducing the amount of glycogen and decreasing the rate of its metabolism. This reduction in brain glycogen level was accompanied by a decrease in Gys1 expression. We noted a reduction in the immunoreactivity and the gene expression of both PYGB and PYGM isoform, as well as an increase in the expression of PHKB in Pb-treated rats. Moreover, exposure to Pb induced decrease in connexin 43 immunoexpression in all the brain structures analyzed, both in astrocytes as well as in neurons. Our data suggests that exposure to Pb in the pre- and neonatal periods results in a decrease in the level of brain glycogen and a reduction in the rate of its metabolism, thereby reducing glucose availability, which as a further consequence may lead to the impairment of brain energy metabolism and the metabolic cooperation between neurons and astrocytes.
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31
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Lin PY, Wang J, Chiang YC, Lai CY, Chang HJ, Chi LY. Risk of subsequent attention-deficit/hyperactivity disorder among children and adolescents with amalgam restorations: A nationwide longitudinal study. Community Dent Oral Epidemiol 2017; 46:47-53. [PMID: 28782290 DOI: 10.1111/cdoe.12327] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 07/06/2017] [Indexed: 11/27/2022]
Abstract
OBJECTIVES Dental amalgam has been used as a common restorative material since the 1800s, but concerns have been raised regarding its purported neuropsychological effects due to the neurotoxicity of mercury. In this study, a nationwide population-based database was employed to investigate the association of dental amalgam restoration with the risk of attention-deficit/hyperactivity disorder (ADHD). METHODS After matching, 88 068 young people with at least one tooth restoration during 2002-2010 and no ADHD history before 2001 were selected and then collected the further information until the end of 2011. Cox proportional hazard models were employed to estimate the possible effect of amalgam restorations on the risk of ADHD during the period of 2002-2011. Subgroup analyses were performed according to age, sex and number of amalgam restorations. RESULTS In total, 2073 people (2.4%) received an ADHD diagnosis during the study period, yielding an incidence rate of 32.4 per 100 000 person-years. Those who had 6 or more amalgam restorations had a higher risk of future ADHD in the unadjusted Cox proportional hazard regression model (hazard ratio=1.20, 95% confidence interval [CI]=1.04-1.38, P=.015) than those who had received composite resin or glass ionomer restorations. However, after adjustment for potential confounding factors, the result was found to be confounded by age. CONCLUSIONS The univariate analysis results showed that those who had 6 or more amalgam restorations had a 20% higher risk of future ADHD; however, the association disappeared after the model was adjusted for age. Despite this study analysing a larger sample than those analysed in previous studies, no association was observed between young patients' having received amalgam restorations and a future ADHD diagnosis. Further research aimed at evaluating the association between dental amalgam and other subsequent neuropsychological effects is warranted, especially for people who are vulnerable to mercury exposure.
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Affiliation(s)
- Po-Yen Lin
- Department of Dentistry, School of Dentistry, National Yang-Ming University, Taipei, Taiwan.,Department of Dentistry, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
| | - Jui Wang
- Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan
| | - Yu-Chih Chiang
- Department of Restorative and Aesthetic Dentistry, School of Dentistry, National Taiwan University and National Taiwan University Hospital, Taipei, Taiwan
| | | | - Hong-Ji Chang
- Department of Dentistry, Cheng Hsin General Hospital, Taipei, Taiwan
| | - Lin-Yang Chi
- Department of Dentistry, School of Dentistry, National Yang-Ming University, Taipei, Taiwan.,Department of Education and Research, Taipei City Hospital, Taipei, Taiwan
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Kwon HJ, Ha M, Kim BN, Lim MH. Harmful Environmental Factors Leading to Attention-Deficit Hyperactivity Disorder. Soa Chongsonyon Chongsin Uihak 2016. [DOI: 10.5765/jkacap.2016.27.4.267] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- Ho Jang Kwon
- Department of Preventive Medicine, College of Medicine, Dankook University, Cheonan, Korea
- Environmental Health Center, Dankook University Hospital, Cheonan, Korea
| | - Mina Ha
- Department of Preventive Medicine, College of Medicine, Dankook University, Cheonan, Korea
- Environmental Health Center, Dankook University Hospital, Cheonan, Korea
| | - Bung Nyun Kim
- Department of Psychiatry, College of Medicine, Seoul National University, Seoul, Korea
| | - Myung Ho Lim
- Environmental Health Center, Dankook University Hospital, Cheonan, Korea
- Department of Psychology and Psychotherapy, College of Health Science, Dankook University, Cheonan, Korea
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Role of Metabolic Genes in Blood Aluminum Concentrations of Jamaican Children with and without Autism Spectrum Disorder. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2016; 13:ijerph13111095. [PMID: 27834815 PMCID: PMC5129305 DOI: 10.3390/ijerph13111095] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 11/01/2016] [Accepted: 11/02/2016] [Indexed: 12/27/2022]
Abstract
Aluminum is a neurotoxic metal with known health effects in animals and humans. Glutathione-S-transferase (GST) genes and enzymes play a major role in detoxification of several heavy metals. Besides a direct relationship with oxidative stress; aluminum decreases GST enzyme activities. Using data from 116 Jamaican children; age 2–8 years; with Autism Spectrum Disorder (ASD) and 116 sex- and age-matched typically developing (TD) children; we investigated the association of polymorphisms in three GST genes (GSTP1; GSTM1; and GSTT1) with mean blood aluminum concentrations in children with and without ASD. Using log-transformed blood aluminum concentration as the dependent variable in a linear regression model; we assessed the additive and interactive effects of ASD status and polymorphisms in the three aforementioned GST genes in relation to blood aluminum concentrations. Although none of the additive effects were statistically significant (all p > 0.16); we observed a marginally significant interaction between GSTP1 Ile105Val (rs1695) and ASD status (p = 0.07); even after controlling for parental education level and consumption of avocado; root vegetables; and tuna (canned fish). Our findings indicate a significantly lower (p < 0.03) adjusted geometric mean blood aluminum concentration for TD children who had the Val/Val genotype (14.57 µg/L); compared with those with Ile/Ile or Ile/Val genotypes who had an adjusted geometric mean of 23.75 µg/L. However; this difference was not statistically significant among the ASD cases (p = 0.76). Our findings indicate that ASD status may be a potential effect modifier when assessing the association between GSTP1 rs1695 and blood aluminum concentrations among Jamaican children. These findings require replication in other populations.
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Carwile JL, Butler LJ, Janulewicz PA, Winter MR, Aschengrau A. Childhood Fish Consumption and Learning and Behavioral Disorders. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2016; 13:ijerph13111069. [PMID: 27827868 PMCID: PMC5129279 DOI: 10.3390/ijerph13111069] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 10/20/2016] [Accepted: 10/25/2016] [Indexed: 01/27/2023]
Abstract
Fish is a major source of nutrients critical for brain development during early life. The importance of childhood fish consumption is supported by several studies reporting associations of n-3 polyunsaturated fatty acid (n-3 PUFA) supplementation with better behavior and school performance. However, fish may have a different effect than n-3 PUFA alone due to the neurotoxic effects of methylmercury, a frequent contaminant. We investigated associations of childhood fish consumption with learning and behavioral disorders in birth cohort study of the neurotoxic effects of early life exposure to solvent-contaminated drinking water. Childhood (age 7–12 years) fish consumption and learning and behavioral problems were reported in self-administered questionnaires (age 23–41 at questionnaire completion). Fish consumption was not meaningfully associated with repeating a grade, tutoring, attending summer school, special class placement, or low educational attainment. However, participants who ate fish several times a week had an elevated odds of Attention Deficit Disorder/Attention Deficit Hyperactivity Disorder (odds ratio: 5.2; 95% confidence interval: 1.5–18) compared to participants who did not eat fish. While these findings generally support the safety of the observed level of fish consumption, the absence of a beneficial effect may be attributed to insufficient fish intake or the choice of relatively low n-3 PUFA fish.
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Affiliation(s)
- Jenny L Carwile
- Department of Epidemiology, Boston University School of Public Health, Boston, MA 02118, USA.
| | - Lindsey J Butler
- Department of Epidemiology, Boston University School of Public Health, Boston, MA 02118, USA.
| | - Patricia A Janulewicz
- Department of Environmental Health, Boston University School of Public Health, Boston, MA 02118, USA.
| | - Michael R Winter
- Data Coordinating Center, Boston University School of Public Health, Boston, MA 02118, USA.
| | - Ann Aschengrau
- Department of Epidemiology, Boston University School of Public Health, Boston, MA 02118, USA.
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Huang S, Hu H, Sánchez BN, Peterson KE, Ettinger AS, Lamadrid-Figueroa H, Schnaas L, Mercado-García A, Wright RO, Basu N, Cantonwine DE, Hernández-Avila M, Téllez-Rojo MM. Childhood Blood Lead Levels and Symptoms of Attention Deficit Hyperactivity Disorder (ADHD): A Cross-Sectional Study of Mexican Children. ENVIRONMENTAL HEALTH PERSPECTIVES 2016; 124:868-74. [PMID: 26645203 PMCID: PMC4892926 DOI: 10.1289/ehp.1510067] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2015] [Accepted: 11/17/2015] [Indexed: 05/22/2023]
Abstract
BACKGROUND Previous studies suggest that blood lead levels are positively associated with attention deficit/hyperactivity disorder (ADHD) and ADHD-symptoms in children. However, the associations between lead exposure and ADHD subtypes are inconsistent and understudied. OBJECTIVE The objective of this study was to explore the association of low-level concurrent lead exposure with subtypes of ADHD symptoms in 578 Mexican children 6-13 years of age. METHODS We measured concurrent blood lead levels using inductively coupled plasma mass spectrometry (ICPMS). We administered the Conners' Rating Scales-Revised (CRS-R) to mothers to evaluate their children's ADHD symptoms. We used imputation to fill missing values in blood lead levels and used segmented regression models adjusted for relevant covariates to model the nonlinear relationship between blood lead and ADHD symptoms. RESULTS Mean ± SD blood lead levels were 3.4 ± 2.9 μg/dL. In adjusted models, a 1-μg/dL increase in blood lead was positively associated with Hyperactivity and Restless-Impulsivity scores on the CRS-R scale and Hyperactivity-Impulsivity scores on the CRS-R scale of the Diagnostic and Statistical Manual of Mental Disorders, 4th Edition, but only in children with blood lead level ≤ 5 μg/dL. Blood lead was not associated with Inattentive symptoms or overall ADHD behavior. CONCLUSIONS In this population of Mexican children, current blood lead level among children with low exposure (≤ 5 μg/dL) was positively associated with hyperactive/impulsive behaviors, but not with inattentiveness. These results add to the existing evidence of lead-associated neurodevelopmental deficits at low levels of exposure. CITATION Huang S, Hu H, Sánchez BN, Peterson KE, Ettinger AS, Lamadrid-Figueroa H, Schnaas L, Mercado-García A, Wright RO, Basu N, Cantonwine DE, Hernández-Avila M, Téllez-Rojo MM. 2016. Childhood blood lead levels and symptoms of attention deficit hyperactivity disorder (ADHD): a cross-sectional study of Mexican children. Environ Health Perspect 124:868-874; http://dx.doi.org/10.1289/ehp.1510067.
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Affiliation(s)
- Siying Huang
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
- Address correspondence to S. Huang, Dalla Lana School of Public Health, University of Toronto, Toronto, ON, M5T 3M7 Canada. Telephone: (437) 333-2968. E-mail:
| | - Howard Hu
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Brisa N Sánchez
- University of Michigan School of Public Health, Ann Arbor, Michigan, USA
| | - Karen E. Peterson
- University of Michigan School of Public Health, Ann Arbor, Michigan, USA
| | | | | | | | | | - Robert O. Wright
- Icahn Mount Sinai School of Medicine, New York City, New York, USA
| | - Niladri Basu
- Faculty of Agricultural and Environmental Sciences, McGill University, Montreal, Québec, Canada
| | - David E. Cantonwine
- Brigham & Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
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Zhang F, Liu Y, Zhang H, Ban Y, Wang J, Liu J, Zhong L, Chen X, Zhu B. Investigation and Evaluation of Children's Blood Lead Levels around a Lead Battery Factory and Influencing Factors. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2016; 13:ijerph13060541. [PMID: 27240393 PMCID: PMC4923998 DOI: 10.3390/ijerph13060541] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 05/20/2016] [Accepted: 05/24/2016] [Indexed: 11/16/2022]
Abstract
Lead pollution incidents have occurred frequently in mainland China, which has caused many lead poisoning incidents. This paper took a battery recycling factory as the subject, and focused on measuring the blood lead levels of environmental samples and all the children living around the factory, and analyzed the relationship between them. We collected blood samples from the surrounding residential area, as well as soil, water, vegetables. The atomic absorption method was applied to measure the lead content in these samples. The basic information of the generation procedure, operation type, habit and personal protect equipment was collected by an occupational hygiene investigation. Blood lead levels in 43.12% of the subjects exceeded 100 μg/L. The 50th and the 95th percentiles were 89 μg/L and 232 μg/L for blood lead levels in children, respectively, and the geometric mean was 94 μg/L. Children were stratified into groups by age, gender, parents' occupation, distance and direction from the recycling plant. The difference of blood lead levels between groups was significant (p < 0.05). Four risk factors for elevated blood lead levels were found by logistic regression analysis, including younger age, male, shorter distance from the recycling plant, and parents with at least one working in the recycling plant. The rate of excess lead concentration in water was 6.25%, 6.06% in soil and 44.44% in leaf vegetables, which were all higher than the Chinese environment standards. The shorter the distance to the factory, the higher the value of BLL and lead levels in vegetable and environment samples. The lead level in the environmental samples was higher downwind of the recycling plant.
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Affiliation(s)
- Feng Zhang
- Department of Occupational Disease Prevention, Jiangsu Provincial Center for Disease Prevention and Control, Nanjing 210009, China.
| | - Yang Liu
- Jiangyin Municipal Center for Disease Prevention and Control, Wuxi 214434, China.
| | - Hengdong Zhang
- Department of Occupational Disease Prevention, Jiangsu Provincial Center for Disease Prevention and Control, Nanjing 210009, China.
| | - Yonghong Ban
- Department of Occupational Disease Prevention, Jiangsu Provincial Center for Disease Prevention and Control, Nanjing 210009, China.
| | - Jianfeng Wang
- Department of Occupational Disease Prevention, Jiangsu Provincial Center for Disease Prevention and Control, Nanjing 210009, China.
| | - Jian Liu
- Department of Occupational Disease Prevention, Jiangsu Provincial Center for Disease Prevention and Control, Nanjing 210009, China.
| | - Lixing Zhong
- Department of Occupational Disease Prevention, Jiangsu Provincial Center for Disease Prevention and Control, Nanjing 210009, China.
| | - Xianwen Chen
- Jiangyin Municipal Center for Disease Prevention and Control, Wuxi 214434, China.
| | - Baoli Zhu
- Department of Occupational Disease Prevention, Jiangsu Provincial Center for Disease Prevention and Control, Nanjing 210009, China.
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Thimerosal-Preserved Hepatitis B Vaccine and Hyperkinetic Syndrome of Childhood. Brain Sci 2016; 6:brainsci6010009. [PMID: 26999226 PMCID: PMC4810179 DOI: 10.3390/brainsci6010009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Revised: 03/06/2016] [Accepted: 03/08/2016] [Indexed: 11/16/2022] Open
Abstract
(1) BACKGROUND: Hyperkinetic syndrome of childhood (HKSoC) is an International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9) category in which the majority of the children are also diagnosed under the Diagnostic and Statistical Manual of Mental Disorders, 4th Edition, Text Revision (DSM-IV-TR), where the umbrella term is "Attention-Deficit and Disruptive Behavior Disorders". The diagnostic criteria for HKSoC are developmentally inappropriate inattention, hyperactivity, and impulsivity. Some studies have implicated mercury (Hg) exposure as a risk factor. (2) METHODS: This hypothesis testing study; using the Vaccine Safety Datalink; assessed the toxicological effects of bolus exposure to organic-Hg from Thimerosal-containing vaccines (TCVs) by examining the relationship between Thimerosal-preserved hepatitis B vaccines (TM-HepB) given at varying levels and at specific intervals in the first six months after birth and the risk of a child being diagnosed with HKSoC. (3) RESULTS: Children diagnosed with HKSoC were significantly more likely to be exposed to increased organic-Hg from TM-HepB doses given within the first month (odds ratio = 1.45; 95% confidence interval (CI) = 1.30-1.62); within the first two months (odds ratio = 1.43; 95% CI = 1.28-1.59); and within the first six months (odds ratio = 4.51; 95% CI = 3.04-6.71) than controls. (4) CONCLUSION: The results indicate that increasing organic-Hg exposure from TCVs heightens the risk of a HKSoC diagnosis.
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Choi WJ, Kwon HJ, Lim MH, Lim JA, Ha M. Blood lead, parental marital status and the risk of attention-deficit/hyperactivity disorder in elementary school children: A longitudinal study. Psychiatry Res 2016; 236:42-46. [PMID: 26774190 DOI: 10.1016/j.psychres.2016.01.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 12/27/2015] [Accepted: 01/03/2016] [Indexed: 12/15/2022]
Abstract
The aim of this study was to investigate the blood lead level and parental marital status that might influence the development of attention-deficit/hyperactivity disorder (ADHD) symptoms in school-aged children. The participants in the survey included elementary school children, and they were followed up biennially. The participants' parents or caregivers were administered a questionnaire including ADHD rating scale. Among 2967 who were not suspected to have ADHD at baseline survey, 2195 children who took follow-up test for ADHD were evaluated. The incidence rate of suspected ADHD was 5.0% (107 cases) during the two years of the follow-up period. The geometric mean blood lead level was 1.56μg/dL. Relative risk ratio for ADHD was estimated using logistic regression analysis. After adjustment for potential confounders, ADHD developed more frequently in children with blood lead levels of >2.17μg/dL (highest quartile) (RR 1.552, 95% CI 1.002-2.403) and in children with a single parent (RR 1.805, 95% CI 1.002-3.254). The RR was 3.567 (95% CI 1.595-7.980) in children with relatively high blood lead levels (>2.17μg/dL) from single-parent families, compared with those with low blood lead and a two-parent family. The ADHD risk in association with blood lead level was modified by family status.
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Affiliation(s)
- Won-Jun Choi
- Department of Occupational and Environmental Medicine, Gachon University Gil Medical Center, Incheon, Republic of Korea
| | - Ho-Jang Kwon
- Department of Preventive Medicine, Dankook University College of Medicine, Cheonan, Republic of Korea.
| | - Myung Ho Lim
- Department of Psychology, Dankook University College of Social Sciences, Cheonan, Republic of Korea
| | - Ji-Ae Lim
- Department of Preventive Medicine, Dankook University College of Medicine, Cheonan, Republic of Korea
| | - Mina Ha
- Department of Preventive Medicine, Dankook University College of Medicine, Cheonan, Republic of Korea
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Assessing new dimensions of attentional functions in children prenatally exposed to environmental contaminants using an adapted Posner paradigm. Neurotoxicol Teratol 2015; 51:27-34. [DOI: 10.1016/j.ntt.2015.07.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 07/18/2015] [Accepted: 07/22/2015] [Indexed: 12/26/2022]
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Kern JK, Geier DA, Sykes LK, Geier MR, Deth RC. Are ASD and ADHD a Continuum? A Comparison of Pathophysiological Similarities Between the Disorders. J Atten Disord 2015; 19:805-27. [PMID: 23074304 DOI: 10.1177/1087054712459886] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
OBJECTIVE The objective of this study was to review and compare the similarities between autism spectrum disorder (ASD) and ADHD with regard to symptomatology, neurological deficits, metabolic and endocrine-related conditions, and brain pathology. METHOD A comprehensive review of the relevant research literature was carried out. RESULTS A number of important similarities between ASD and ADHD were identified, including recent increases in prevalence, male-biased incidence, shared involvement of sensory processing, motor and impulse control, abnormal patterns of neural connectivity, and sleep disturbances. Studies suggest involvement of androgen metabolism, impaired methylation, and heavy metal toxicity as possible contributing factors for both disorders. CONCLUSION ASD and ADHD share a number of features and pathophysiological conditions, which suggests that the two disorders may be a continuum and have a common origin.
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Affiliation(s)
- Janet K Kern
- Institute of Chronic Illnesses, Inc., Silver Spring, MD, USA University of Texas Southwestern Medical Center at Dallas, TX, USA
| | - David A Geier
- Institute of Chronic Illnesses, Inc., Silver Spring, MD, USA
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Fachehoun RC, Lévesque B, Dumas P, St-Louis A, Dubé M, Ayotte P. Lead exposure through consumption of big game meat in Quebec, Canada: risk assessment and perception. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2015; 32:1501-11. [DOI: 10.1080/19440049.2015.1071921] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Schöneck N, Gest S, Schölmerich A. Zur Konstruktvalidität der selektiven Aufmerksamkeit in einer computergestützten Testbatterie zur Aufmerksamkeitsprüfung für Kinder (KITAP). DIAGNOSTICA 2015. [DOI: 10.1026/0012-1924/a000119] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Die Fähigkeit zur selektiven Aufmerksamkeit hat eine hohe Relevanz für die psychosoziale Entwicklung von Kindern. Durch die Analyse der Testergebnisse von N = 467 Kindern (52 % Jungen) im Alter von 7 bis 10 Jahren (M = 105.23 Monate; SD = 5.87) in den Subtests Go/NoGo und Ablenkbarkeit der KITAP werden statistische Zusammenhänge dargestellt. Zudem werden Annahmen aus einer theoretischen Perspektive bezüglich selektiver Aufmerksamkeit in der KITAP überprüft. Insgesamt ist es nicht gelungen eine Modellspezifikation selektiver Aufmerksamkeit darzustellen, die die vorliegenden Daten angemessen repräsentiert. Eine exploratorische Faktorenanalyse ergab drei Faktoren (Leistungsgeschwindigkeit, Leistungsgüte und Interferenzeffekt) mit einer Varianzaufklärung von 45 %. Zudem wurden Alters- und Geschlechtsunterschiede gefunden. Die Reliabilitätskennwerte sind mit denen in der Normstichprobe vergleichbar und können nur teilweise als befriedigend eingestuft werden. Folgerungen für die differenzierte Interpretation der beiden KITAP-Subtests werden diskutiert.
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Renner G, Stottmeister-Lessing T, Irblich D, Krampen G. Psychometrische Eigenschaften der „Testbatterie zur Aufmerksamkeitsprüfung für Kinder” (KITAP) in einer klinischen Stichprobe. DIAGNOSTICA 2015. [DOI: 10.1026/0012-1924/a000122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
An einer klinisch-sozialpädiatrischen Stichprobe von 225 Kindern im Alter von 6 – 10 Jahren wurden bis zu sechs Untertests der computerisierten „Testbatterie zur Aufmerksamkeitsprüfung für Kinder” (KITAP) durchgeführt. Außerdem wurden klinische Diagnosen nach ICD-10 erfasst und an Teilstichproben verschiedene Referenzvariablen erhoben (Intelligenz, Verhaltensratings). Die mittels der Split-half-Methode ermittelten Reliabilitätskennwerte fielen überwiegend vergleichbar mit den Daten der Normstichprobe und somit nicht durchgehend befriedigend aus. Die KITAP-Parameter zeigten überwiegend keine bedeutsamen Korrelationen mit der als Intelligenzmaß eingesetzten Kaufman-Assessment Battery for Children (K-ABC) und mit Verhaltensratings, einschließlich Ratings von Aufmerksamkeitsproblemen, von Eltern und Lehrern. Die differentielle Validität für klinische Gruppen (ADHS vs. Kinder ohne Aufmerksamkeitsprobleme; ADHS vs. Kinder mit Störungen des Sozialverhaltens, kombinierten Entwicklungsstörungen, umschriebenen Entwicklungsstörungen schulischer Fertigkeiten) konnte nicht belegt werden.
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Neugebauer J, Wittsiepe J, Kasper-Sonnenberg M, Schöneck N, Schölmerich A, Wilhelm M. The influence of low level pre- and perinatal exposure to PCDD/Fs, PCBs, and lead on attention performance and attention-related behavior among German school-aged children: results from the Duisburg Birth Cohort Study. Int J Hyg Environ Health 2014; 218:153-62. [PMID: 25456149 DOI: 10.1016/j.ijheh.2014.09.005] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2014] [Revised: 09/26/2014] [Accepted: 09/26/2014] [Indexed: 12/20/2022]
Abstract
BACKGROUND Prenatal exposure to polychlorinated biphenyls (PCBs) and lead are thought to be risk factors for attention-deficit hyperactivity disorder (ADHD), whereas the prenatal influence of polychlorinated dibenzo-p-dioxins and -furans (PCDD/Fs) on attention performance has been less studied. OBJECTIVES Within the Duisburg Birth Cohort Study, we investigated low-level exposure to these compounds in relation to children's attention. METHODS We measured blood levels of PCDD/Fs, PCBs and lead from pregnant mothers (32(nd) week of pregnancy) and PCDD/Fs and PCBs in breast milk (2 weeks after delivery). The attention of school-aged children (N=117) was investigated with a computer-based test battery of attention performance (KITAP) and a parent rating questionnaire of behaviors related to ADHD (FBB-ADHS). Influences of the exposure on attention were analyzed by multiple regression analyses. RESULTS Increasing prenatal PCDD/F and PCB concentrations were significantly (p<0.05) associated with a higher number of omission errors in the subtest Divided Attention (47% and 42%; 95% confidence intervals (95%-CI): 1.08-2.00 and 1.07-1.89, respectively). Prenatal lead concentrations had few significant associations with attention performance (e.g., a 23% higher number of omission errors in the subtest Distractibility; 95%-CI: 1.00-1.51), whereas ADHD-related behavior (questionnaire based) was increased with increasing lead exposure (Overall-ADHD: 9%; 95%-CI: 1.01-1.17). ADHD-related behavior was negatively associated with prenatal PCDD/F or PCB exposures (e.g., for PCB exposure: -10%; 95%-CI: 0.82-0.99). CONCLUSIONS Pre- and perinatal PCDD/F and PCB exposure may have subtle influences on attention performance in healthy children at low environmental levels, while behavior changes are negatively associated. Furthermore, we provide additional evidence for the impact of prenatal lead exposure on attention deficits.
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Affiliation(s)
- Julia Neugebauer
- Department of Hygiene, Social and Environmental Medicine, Ruhr-University Bochum, Universitätsstraße 150, D-44801 Bochum, Germany
| | - Jürgen Wittsiepe
- Department of Hygiene, Social and Environmental Medicine, Ruhr-University Bochum, Universitätsstraße 150, D-44801 Bochum, Germany.
| | - Monika Kasper-Sonnenberg
- Department of Hygiene, Social and Environmental Medicine, Ruhr-University Bochum, Universitätsstraße 150, D-44801 Bochum, Germany
| | - Nina Schöneck
- Department of Developmental Psychology, Ruhr-University Bochum, Universitätsstraße 150, D-44801 Bochum, Germany
| | - Axel Schölmerich
- Department of Developmental Psychology, Ruhr-University Bochum, Universitätsstraße 150, D-44801 Bochum, Germany
| | - Michael Wilhelm
- Department of Hygiene, Social and Environmental Medicine, Ruhr-University Bochum, Universitätsstraße 150, D-44801 Bochum, Germany
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Woo HD, Kim DW, Hong YS, Kim YM, Seo JH, Choe BM, Park JH, Kang JW, Yoo JH, Chueh HW, Lee JH, Kwak MJ, Kim J. Dietary patterns in children with attention deficit/hyperactivity disorder (ADHD). Nutrients 2014; 6:1539-53. [PMID: 24736898 PMCID: PMC4011050 DOI: 10.3390/nu6041539] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Revised: 03/17/2014] [Accepted: 03/28/2014] [Indexed: 11/17/2022] Open
Abstract
The role of diet in the behavior of children has been controversial, but the association of several nutritional factors with childhood behavioral disorders has been continually suggested. We conducted a case-control study to identify dietary patterns associated with attention deficit hyperactivity disorder (ADHD). The study included 192 elementary school students aged seven to 12 years. Three non-consecutive 24-h recall (HR) interviews were employed to assess dietary intake, and 32 predefined food groups were considered in a principal components analysis (PCA). PCA identified four major dietary patterns: the "traditional" pattern, the "seaweed-egg" pattern, the "traditional-healthy" pattern, and the "snack" pattern. The traditional-healthy pattern is characterized by a diet low in fat and high in carbohydrates as well as high intakes of fatty acids and minerals. The multivariate-adjusted odds ratio (OR) of ADHD for the highest tertile of the traditional-healthy pattern in comparison with the lowest tertile was 0.31 (95% CI: 0.12-0.79). The score of the snack pattern was positively associated with the risk of ADHD, but a significant association was observed only in the second tertile. A significant association between ADHD and the dietary pattern score was not found for the other two dietary patterns. In conclusion, the traditional-healthy dietary pattern was associated with lower odds having ADHD.
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Affiliation(s)
- Hae Dong Woo
- Molecular Epidemiology Branch, National Cancer Center, 323 Ilsan-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do 410-769, Korea.
| | - Dong Woo Kim
- Molecular Epidemiology Branch, National Cancer Center, 323 Ilsan-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do 410-769, Korea.
| | - Young-Seoub Hong
- Department of Preventive Medicine, College of Medicine, Dong-A University, Dong-A University Hospital, 26, Daesingongwon-ro, Seo-gu, Busan 602-715, Korea.
| | - Yu-Mi Kim
- Department of Preventive Medicine, College of Medicine, Dong-A University, Dong-A University Hospital, 26, Daesingongwon-ro, Seo-gu, Busan 602-715, Korea.
| | - Ju-Hee Seo
- Heavy Metal Exposure Environmental Health Center, Dong-A University, 32, Daesingongwon-ro, Seo-gu, Busan 602-714, Korea.
| | - Byeong Moo Choe
- Department of Psychiatry, College of Medicine, Dong-A University, Dong-A University Hospital, 26 Daesingongwon-ro, Seo-gu, Busan 602-715, Korea.
| | - Jae Hong Park
- Department of Psychiatry, College of Medicine, Dong-A University, Dong-A University Hospital, 26 Daesingongwon-ro, Seo-gu, Busan 602-715, Korea.
| | - Je-Wook Kang
- Department of Child and Adolescent Psychiatry, College of Medicine, Inje University Busan Paik Hospital, 75 Bokji-ro, Busanjin-gu, Busan 614-735, Korea.
| | - Jae-Ho Yoo
- Department of Pediatrics, College of Medicine, Dong-A University, Dong-A University Hospital, 26 Daesingongwon-ro, Seo-gu, Busan 602-715, Korea.
| | - Hee Won Chueh
- Department of Pediatrics, College of Medicine, Dong-A University, Dong-A University Hospital, 26 Daesingongwon-ro, Seo-gu, Busan 602-715, Korea.
| | - Jung Hyun Lee
- Department of Pediatrics, Kosin University Gospel Hospital, 262, Gamcheon-ro, Seo-gu, Busan 602-702, Korea.
| | - Min Jung Kwak
- Department of Pediatrics, Pusan National University Hospital, Pusan National University School of Medicine, 179, Gudeok-ro, Seo-gu, Busan 602-739, Korea.
| | - Jeongseon Kim
- Molecular Epidemiology Branch, National Cancer Center, 323 Ilsan-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do 410-769, Korea.
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Marques RC, Bernardi JVE, Dórea JG, de Fatima R Moreira M, Malm O. Perinatal multiple exposure to neurotoxic (lead, methylmercury, ethylmercury, and aluminum) substances and neurodevelopment at six and 24 months of age. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2014; 187:130-135. [PMID: 24486466 DOI: 10.1016/j.envpol.2014.01.004] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Revised: 01/03/2014] [Accepted: 01/04/2014] [Indexed: 06/03/2023]
Abstract
We studied neurodevelopment in infants from two communities. Children living in the vicinity of tin-ore kilns and smelters - TOKS; n = 51) were compared to children from a fishing village (Itapuã; n = 45). Mean hair-Hg (HHg) concentrations were significantly higher in Itapuã children which received significantly (p = 0.0000001) less mean ethylmercury (88.6 μg) from Thimerosal-containing vaccines (TCV) than the TOKS children (120 μg). Breast-milk Pb concentrations were significantly higher in the TOKS mothers (p = 0.000017; 10.04 vs. 3.9 μg L(-1)). Bayley mental development index (MDI) and psychomotor development index (PDI) were statistically significant (respectively p < 0.0000001, p = 0.000007) lower for the TOKS children only at 24 months of age. Multivariate regression analysis showed that MDI was negatively affected by breast-milk Pb and by HHg. PDI was positively affected by breastfeeding and negatively affected by ethylmercury. Milestone achievements were negatively affected by breast-milk Pb (age of walking) and by HHg (age of talking).
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Affiliation(s)
- Rejane C Marques
- Federal University of Rio de Janeiro, Campus Macaé, CEP 27930-560 RJ, Brazil
| | | | - José G Dórea
- University of Brasília, Brasília, 70919-970 DF, Brasil.
| | | | - Olaf Malm
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, CEP 21941-902 RJ, Brazil
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Shin DW, Kim EJ, Oh KS, Shin YC, Lim SW. The Relationship between Hair Zinc and Lead Levels and Clinical Features of Attention-Deficit Hyperactivity Disorder. Soa Chongsonyon Chongsin Uihak 2014. [DOI: 10.5765/jkacap.2014.25.1.28] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Pfaender S, Grabrucker AM. Characterization of biometal profiles in neurological disorders. Metallomics 2014; 6:960-77. [DOI: 10.1039/c4mt00008k] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This review summarizes the findings on dysregulation of metal ions in neurological diseases and tries to develop and predict specific biometal profiles.
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Affiliation(s)
| | - Andreas M. Grabrucker
- Institute for Anatomy and Cell Biology
- Ulm University
- Ulm, Germany
- WG Molecular Analysis of Synaptopathies
- Neurology Dept
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Fazli D, Malekirad AA, Mirzaee M, Dastjerdi HA, Mostafalou S, Karkhane A, Bayrami Z, Abdollahi M. Study on the Link between Lead Exposure and Hematological, Psychological, and Memorial Parameters in Automobile Repair Workers. Health (London) 2014. [DOI: 10.4236/health.2014.68092] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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