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Association of prenatal exposure to dioxin-like compounds, polychlorinated biphenyl, and methylmercury with event-related brain potentials in school-aged children: the Hokkaido study. Neurotoxicology 2022; 91:11-21. [DOI: 10.1016/j.neuro.2022.04.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 03/18/2022] [Accepted: 04/24/2022] [Indexed: 11/18/2022]
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2
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Hasan GA, Das AK, Satter MA. Multi residue analysis of organochlorine pesticides in fish, milk, egg and their feed by GC-MS/MS and their impact assessment on consumers health in Bangladesh. NFS JOURNAL 2022. [DOI: 10.1016/j.nfs.2022.03.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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3
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Pham NT, Nishijo M, Nghiem TTG, Pham TT, Tran NN, Le VQ, Vu TH, Tran HA, Phan HAV, Do Q, Takiguchi T, Nishino Y, Nishijo H. Effects of perinatal dioxin exposure on neonatal electroencephalography (EEG) activity of the quiet sleep stage in the most contaminated area from Agent Orange in Vietnam. Int J Hyg Environ Health 2020; 232:113661. [PMID: 33296778 DOI: 10.1016/j.ijheh.2020.113661] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 10/23/2020] [Accepted: 11/01/2020] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To investigate the effects of perinatal dioxin exposure indicated by dioxins in breast milk on neonatal electroencephalography (EEG) power in the quiet sleep stage, and associations with neurodevelopmental outcomes at 2 years of age. STUDY DESIGN Fifty-one mother-newborn pairs were enrolled for neonatal EEG analysis in the quiet sleep stage from a birth cohort recruited at a prefecture hospital in Bien Hoa city, Vietnam. Relative EEG power in intra-burst-intervals and high-voltage-bursts in the trace alternant pattern were computed from EEG data during the quiet sleep stage. Forty-three mother-child pairs participated in a 2-year follow-up survey to examine neurodevelopment using the Bayley-III scale and gaze behavior exhibited by fixation duration on the face of a child talking in videos. The general linear model and regression linear model were used for data analysis after adjusting for confounding factors. RESULTS Perinatal dioxin exposure, particularly 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) exposure, influenced relative EEG power values mainly in the intra-burst-interval part of the trace alternant pattern in the quiet sleep stage. In intra-burst-intervals, decreased frontal delta power and increased frontal and parietal alpha power values in the left hemisphere and temporal beta power values in the right hemisphere were associated with increased TCDD exposure, with significant dose-response relationships. Almost none of the relative power values in these brain regions were associated with Bayley III scores, but relative delta power values were significantly associated with face fixation duration in left frontal and parietal regions at 2 years of age. CONCLUSION Perinatal dioxin exposure influences neuronal activity in the quiet sleep stage, leading to poor communication ability indicated by gaze behavior in early childhood.
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Affiliation(s)
- Ngoc Thao Pham
- Department of Epidemiology and Public Health, Kanazawa Medical University, Ishikawa, 920-0293, Japan
| | - Muneko Nishijo
- Department of Epidemiology and Public Health, Kanazawa Medical University, Ishikawa, 920-0293, Japan.
| | - Thi Thuy Giang Nghiem
- System Emotional Science, Graduate School of Medicine, University of Toyama, Toyama, Japan
| | - The Tai Pham
- Vietnam Military Medical University, 160 Phung Hung, Ha Dong, Ha Noi, Viet Nam
| | - Ngoc Nghi Tran
- Ministry of Health, Vietnamese Government, Hanoi, Viet Nam
| | - Van Quan Le
- Vietnam Military Medical University, 160 Phung Hung, Ha Dong, Ha Noi, Viet Nam
| | - Thi Hoa Vu
- Department of Epidemiology and Public Health, Kanazawa Medical University, Ishikawa, 920-0293, Japan
| | - Hai Anh Tran
- Vietnam Military Medical University, 160 Phung Hung, Ha Dong, Ha Noi, Viet Nam
| | - Huy Anh Vu Phan
- Department of Health, Dongnai Prefectural Government, Bienhoa, Dongnai, Viet Nam
| | - Quyet Do
- Vietnam Military Medical University, 160 Phung Hung, Ha Dong, Ha Noi, Viet Nam
| | - Tomoya Takiguchi
- Department of Epidemiology and Public Health, Kanazawa Medical University, Ishikawa, 920-0293, Japan
| | - Yoshikazu Nishino
- Department of Epidemiology and Public Health, Kanazawa Medical University, Ishikawa, 920-0293, Japan
| | - Hisao Nishijo
- System Emotional Science, Graduate School of Medicine, University of Toyama, Toyama, Japan
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4
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Xie HQ, Ma Y, Fu H, Xu T, Luo Y, Liu Y, Chen Y, Xu L, Xia Y, Zhao B. New perspective on the regulation of acetylcholinesterase via the aryl hydrocarbon receptor. J Neurochem 2020; 158:1254-1262. [PMID: 33278027 DOI: 10.1111/jnc.15261] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/24/2020] [Accepted: 11/30/2020] [Indexed: 11/30/2022]
Abstract
Acetylcholinesterase (AChE, EC 3.1.1.7) plays important roles in cholinergic neurotransmission and has been widely recognized as a biomarker for monitoring pollution by organophosphate (OP) and carbamate pesticides. Dioxin is an emerging environmental AChE disruptor and is a typical persistent organic pollutant with multiple toxic effects on the nervous system. Growing evidence has shown that there is a significant link between dioxin exposure and neurodegenerative diseases and neurodevelopmental disorders, most of which involve AChE and cholinergic dysfunctions. Therefore, an in-depth understanding of the effects of dioxin on AChE and the related mechanisms of action might help to shed light on the molecular bases of dioxin impacts on the nervous system. In the past decade, the effects of dioxins on AChE have been revealed in cultured cells of different origins and in rodent animal models. Unlike OP and carbamate pesticides, dioxin-induced AChE disturbance is not due to direct inhibition of enzymatic activity; instead, dioxin causes alterations of AChE expression in certain models. As a widely accepted mechanism for most dioxin effects, the aryl hydrocarbon receptor (AhR)-dependent pathway has become a research focus in studies on the mechanism of action of dioxin-induced AChE dysregulation. In this mini-review, the effects of dioxin on AChE and the diverse roles of the AhR pathway in AChE regulation are summarized. Additionally, the involvement of AhR in AChE regulation during different neurodevelopmental processes is discussed. These AhR-related findings might also provide new insight into AChE regulation triggered by diverse xenobiotics capable of interacting with AhR.
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Affiliation(s)
- Heidi Qunhui Xie
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Yongchao Ma
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Hualing Fu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Tuan Xu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Yali Luo
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Yiyun Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Yangsheng Chen
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Li Xu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Yingjie Xia
- Division of Life Science and Center for Chinese Medicine, the Hong Kong University of Science and Technology, Hong Kong, China
| | - Bin Zhao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
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5
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Lung FW, Shu BC, Chiang TL, Lin SJ. The impermanent effect of waste incineration on children's development from 6 months to 8 years: A Taiwan Birth Cohort Study. Sci Rep 2020; 10:3150. [PMID: 32081913 PMCID: PMC7035311 DOI: 10.1038/s41598-020-60039-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 02/03/2020] [Indexed: 11/09/2022] Open
Abstract
Incineration is a solution to waste problems; however, it has adverse effects on human health. Our study aimed to investigate the direct and indirect effects of living near an incinerator and breastfeeding on children's development at 6, 18, 36 and 66 months, and 8 years of age. The Taiwan Birth Cohort Study dataset used included randomized community data on 19,519 children from 6 months to 8 years old. The Taiwan Birth Cohort Study Developmental Instrument was used to measure children's development at different developmental ages. The results of our study showed that living within 3 km of an incinerator had a negative effect on children's 6-month development, however the effect dissipated after 18 months. Having been breastfed and living in the city had a more persistent and pervasive positive effect on children's development. Conversely, living in the city had an adverse effect on children's social-communication and emotional development when they were 8 years old; possibly due to the Chinese cultural characteristic of collectivism. Further follow-up of the long-term interactive effects of proximity to an incinerator and breastfeeding on children's development and health is needed.
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Affiliation(s)
- For-Wey Lung
- Calo Psychiatric Center, Pingtung County, Taiwan.,Graduate Institute of Medical Science, National Defense Medical Center, Taipei, Taiwan
| | - Bih-Ching Shu
- Institute of Allied Health Sciences, Department of Nursing, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
| | - Tung-Liang Chiang
- Institute of Health Policy and Management, College of Public Health, National Taiwan University, Taipei, Taiwan
| | - Shio-Jean Lin
- Genetic Counseling Center, Chi Mei Medical Center, Tainan, Taiwan
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6
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Żwierełło W, Maruszewska A, Skórka-Majewicz M, Goschorska M, Baranowska-Bosiacka I, Dec K, Styburski D, Nowakowska A, Gutowska I. The influence of polyphenols on metabolic disorders caused by compounds released from plastics - Review. CHEMOSPHERE 2020; 240:124901. [PMID: 31563713 DOI: 10.1016/j.chemosphere.2019.124901] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 09/06/2019] [Accepted: 09/17/2019] [Indexed: 06/10/2023]
Abstract
Persistent organic pollutants (POPs) released from plastics into water, soil and air are significant environmental and health problem. Continuous exposure of humans to these substances results not only from the slow biodegradation of plastics but also from their ubiquitous use as industrial materials and everyday products. Exposure to POPs may lead to neurodegenerative disorders, induce inflammation, hepatotoxicity, nephrotoxicity, insulin resistance, allergies, metabolic diseases, and carcinogenesis. This has spurred an increasing intense search for natural compounds with protective effects against the harmful components of plastics. In this paper, we discuss the current state of knowledge concerning the protective functions of polyphenols against the toxic effects of POPs: acrylonitrile, polychlorinated biphenyls, dioxins, phthalates and bisphenol A. We review in detail papers from the last two decades, analyzing POPs in terms of their sources of exposure and demonstrate how polyphenols may be used to counteract the harmful environmental effects of POPs. The protective effect of polyphenols results from their impact on the level and activity of the components of the antioxidant system, enzymes involved in the elimination of xenobiotics, and as a consequence - on the level of reactive oxygen species (ROS). Polyphenols present in daily diet may play a protective role against the harmful effects of POPs derived from plastics, and this interaction is related, among others, to the antioxidant properties of these compounds. To our knowledge, this is the first extensive review of in vitro and in vivo studies concerning the molecular mechanisms of interactions between selected environmental toxins and polyphenols.
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Affiliation(s)
- Wojciech Żwierełło
- Department of Human Nutrition and Metabolomics, Pomeranian Medical University in Szczecin, 24 Broniewskiego St., 71-460, Szczecin, Poland
| | - Agnieszka Maruszewska
- Department of Biochemistry, Faculty of Biology, University of Szczecin, 3c Felczaka St., 71-412, Szczecin, Poland
| | - Marta Skórka-Majewicz
- Department of Human Nutrition and Metabolomics, Pomeranian Medical University in Szczecin, 24 Broniewskiego St., 71-460, Szczecin, Poland
| | - Marta Goschorska
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University in Szczecin, 72 Powst. Wlkp. St., 70-111, Szczecin, Poland
| | - Irena Baranowska-Bosiacka
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University in Szczecin, 72 Powst. Wlkp. St., 70-111, Szczecin, Poland
| | - Karolina Dec
- Department of Human Nutrition and Metabolomics, Pomeranian Medical University in Szczecin, 24 Broniewskiego St., 71-460, Szczecin, Poland
| | - Daniel Styburski
- Department of Human Nutrition and Metabolomics, Pomeranian Medical University in Szczecin, 24 Broniewskiego St., 71-460, Szczecin, Poland
| | - Anna Nowakowska
- Centre for Human Structural and Functional Research, Faculty of Physical Education and Health Promotion, University of Szczecin, 17C Narutowicza St., 70-240, Szczecin, Poland
| | - Izabela Gutowska
- Department of Medical Chemistry, Pomeranian Medical University in Szczecin, 72 Powst. Wlkp. St., 70-111, Szczecin, Poland.
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7
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Chen Y, Xie HQ, Sha R, Xu T, Zhang S, Fu H, Xia Y, Liu Y, Xu L, Zhao B. 2,3,7,8-Tetrachlorodibenzo-p-dioxin and up-regulation of neurofilament expression in neuronal cells: Evaluation of AhR and MAPK pathways. ENVIRONMENT INTERNATIONAL 2020; 134:105193. [PMID: 31775093 DOI: 10.1016/j.envint.2019.105193] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 08/25/2019] [Accepted: 09/16/2019] [Indexed: 06/10/2023]
Abstract
Dioxin exposure is reported to affect nervous system development and increase the risk of neurodegenerative diseases. Generally, dioxin exerts its neurotoxicity via aryl hydrocarbon receptor (AhR). Neurofilament (NF) light (NFL) protein is a biomarker for both neuronal differentiation and neurodegeneration and its expression is controlled by the mitogen-activated protein kinase (MAPK) pathway. However, the effects of dioxin on NFL expression and involved mechanisms are incompletely understood. We aimed to investigate the effects of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) on NFL expression and elucidate the underlining signaling pathways and their potential crosstalk, specifically between MAPK and AhR pathway. We employed primary cultured rat cortical neurons to evaluate the effect of TCDD exposure on NFL expression. We also used nerve growth factor (NGF)-treated PC12 cells with specific inhibitors to investigate the involvement of and potential crosstalk between the MAPK pathway and the AhR pathway in mediating the effects of TCDD on NFL expression. After TCDD exposure, NFL mRNA and protein levels were upregulated in cultured neurons. NFL protein was preferentially found in the cell body compared with neurites of the cultured neurons. In PC12 cells, TCDD enhanced both NGF-induced NFL expression and phosphorylation of ERK1/2 and p38. The addition of MAPK-pathway inhibitors (PD98059 and SB230580) partially blocked the TCDD-induced NFL upregulation. CH223191, an AhR antagonist, reversed the upregulation of NFL and phosphorylation of ERK1/2 and p38 induced by TCDD. This study demonstrated TCDD-induced upregulation of NFL in cultured neurons, with protein retained in the cell body. TCDD action was dependent on activation of AhR and MAPK, while crosstalk was found between these two signaling pathways.
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Affiliation(s)
- Yangsheng Chen
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Institute of Environment and Health, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China; University of Chinese Academy of Sciences, Beijing 100085, China
| | - Heidi Qunhui Xie
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Institute of Environment and Health, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China; University of Chinese Academy of Sciences, Beijing 100085, China
| | - Rui Sha
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100085, China
| | - Tuan Xu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100085, China
| | - Songyan Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100085, China; College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Hualing Fu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100085, China
| | - Yingjie Xia
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100085, China
| | - Yiyun Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100085, China
| | - Li Xu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Institute of Environment and Health, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China; University of Chinese Academy of Sciences, Beijing 100085, China.
| | - Bin Zhao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Institute of Environment and Health, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China; University of Chinese Academy of Sciences, Beijing 100085, China.
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8
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Pham NT, Nishijo M, Pham TT, Tran NN, Le VQ, Tran HA, Phan HAV, Nishino Y, Nishijo H. Perinatal dioxin exposure and neurodevelopment of 2-year-old Vietnamese children in the most contaminated area from Agent Orange in Vietnam. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 678:217-226. [PMID: 31075589 DOI: 10.1016/j.scitotenv.2019.04.425] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 04/28/2019] [Accepted: 04/28/2019] [Indexed: 05/19/2023]
Abstract
Bien Hoa airbase is the most contaminated area of dioxin contamination from Agent Orange in Vietnam, but little is known about the neurodevelopmental effects of perinatal dioxin exposure on children living nearby. We recruited 210 mother-newborn resident pairs in 2012 and 78 pairs in 2015 and followed them for 2 years to assess the children's neurodevelopment. As a control group, we used 120 mother-child pairs recruited in 2014 in the Ha Dong district of Ha Noi City, an unexposed area. Perinatal dioxin exposure levels were indicated by levels of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and toxic equivalency values of polychlorodibenzodioxins, polychlorodibenzofurans, and nonortho-polychlorinated biphenyls (TEQ-PCDD/Fs/noPCBs) in maternal breast milk. The Bayley Scales of Infant and Toddler Development, Third Edition (Bayley-III) were used to assess neurodevelopment, and scores in each domain were compared between children with different exposure levels using general linear regression models and stratification by sex. Decreased expressive and composite language scores in boys and gross motor scores in girls were found in children exposed to TCDD ≥ 5.5 (pg/g lipid) compared with children with TCDD < 1.8. However, in matched pair analysis between children with TCDD ≥ 5.5 and <1.8 (pg/g lipid), lower expressive and composite language scores in boys exposed to TCDD ≥ 5.5 were significant, but lower gross motor scores in girls did not reach statistical significance. In addition, significant association was found between levels of PCDD congeners other than TCDD and gross motor scores in boys. These findings suggest that perinatal exposure of TCDD and other PCDD congeners affects development of language and gross motor skills, respectively, in boys at 2 years of age exposed to dioxins originating from Agent Orange in Vietnam.
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Affiliation(s)
- Ngoc Thao Pham
- Department of Public Health, Kanazawa Medical University, Japan; Biomedical and Pharmaceutical Research Center, Vietnamese Military Medical University, Viet Nam
| | - Muneko Nishijo
- Department of Public Health, Kanazawa Medical University, Japan.
| | - The Tai Pham
- Biomedical and Pharmaceutical Research Center, Vietnamese Military Medical University, Viet Nam
| | | | - Van Quan Le
- Biomedical and Pharmaceutical Research Center, Vietnamese Military Medical University, Viet Nam
| | - Hai Anh Tran
- Biomedical and Pharmaceutical Research Center, Vietnamese Military Medical University, Viet Nam
| | - Huy Anh Vu Phan
- Department of Health, Dong Nai Prefecture Government, Bien Hoa, Viet Nam
| | | | - Hisao Nishijo
- System Emotional Science, Graduate School of Medicine, University of Toyama, Japan
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9
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Fábelová L, Loffredo CA, Klánová J, Hilscherová K, Horvat M, Tihányi J, Richterová D, Palkovičová Murínová Ľ, Wimmerová S, Sisto R, Moleti A, Trnovec T. Environmental ototoxicants, a potential new class of chemical stressors. ENVIRONMENTAL RESEARCH 2019; 171:378-394. [PMID: 30716515 DOI: 10.1016/j.envres.2019.01.042] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 01/24/2019] [Accepted: 01/25/2019] [Indexed: 05/28/2023]
Abstract
Hearing loss is an injury that can develop over time, and people may not even be aware of it until it becomes a severe disability. Ototoxicants are substances that may damage the inner ear by either affecting the structures in the ear itself or by affecting the nervous system. We have examined the possibility that ototoxicants may present a health hazard in association with environmental exposures, adding to existing knowledge of their proven hazards under medical therapeutic conditions or occupational activities. In addition to the already described human environmental ototoxicants, mainly organochlorines such as polychlorinated biphenyls (PCBs), polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs), dichlorodiphenyltrichloroethane (DDT), dichlorodiphenyldichloroethylene (DDE), hexachlorocyclohexane (HCH) and hexachlorobenzene (HCB), we have examined the ubiquitous chemical stressors phthalates, bisphenol A/S/F/, PFCs, flame retardants (FRs) and cadmium for potential ototoxic properties, both as single substances or as chemical mixtures. Our literature review confirmed that these chemicals may disturb thyroid hormones homeostasis, activate aryl hydrocarbon receptor (AhR), and induce oxidative stress, which in turn may initiate a chain of events resulting in impairment of cochlea and hearing loss. With regard to auditory plasticity, diagnostics of a mixture of effects of ototoxicants, potential interactions of chemical and physical agents with effects on hearing, parallel deterioration of hearing due to chemical exposures and ageing, metabolic diseases or obesity, even using specific methods as brainstem auditory evoked potentials (BAEP) or otoacoustic emissions (OAEs) registration, may be difficult, and establishment of concentration-response relationships problematic. This paper suggests the establishment of a class of environmental oxotoxicants next to the established classes of occupational and drug ototoxicants. This will help to properly manage risks associated with human exposure to chemical stressors with ototoxic properties and adequate regulatory measures.
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Affiliation(s)
- Lucia Fábelová
- Slovak Medical University, Faculty of Public Health, Department of Environmental Medicine, Limbova 12, 83303 Bratislava, Slovakia
| | - Christopher A Loffredo
- Lombardi Comprehensive Cancer Center, Georgetown University, Washington, D.C. 20057, USA
| | - Jana Klánová
- Masaryk University, Research Centre for Toxic Compounds in the Environment, RECETOX, Brno, Czech Republic
| | - Klára Hilscherová
- Masaryk University, Research Centre for Toxic Compounds in the Environment, RECETOX, Brno, Czech Republic
| | - Milena Horvat
- Jožef Stefan Institute, Department of Environmental Sciences, Ljubljana, Slovenia
| | - Juraj Tihányi
- Slovak Medical University, Faculty of Public Health, Department of Environmental Medicine, Limbova 12, 83303 Bratislava, Slovakia
| | - Denisa Richterová
- Slovak Medical University, Faculty of Public Health, Department of Environmental Medicine, Limbova 12, 83303 Bratislava, Slovakia
| | - Ľubica Palkovičová Murínová
- Slovak Medical University, Faculty of Public Health, Department of Environmental Medicine, Limbova 12, 83303 Bratislava, Slovakia
| | - Soňa Wimmerová
- Slovak Medical University, Faculty of Public Health, Department of Environmental Medicine, Limbova 12, 83303 Bratislava, Slovakia
| | - Renata Sisto
- INAIL, Research Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, Monte Porzio Catone, Italy
| | - Arturo Moleti
- University of Roma, Tor Vergata, Department of Physics, Roma, Italy
| | - Tomáš Trnovec
- Slovak Medical University, Faculty of Public Health, Department of Environmental Medicine, Limbova 12, 83303 Bratislava, Slovakia.
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10
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Riggins T, Scott LS. P300 development from infancy to adolescence. Psychophysiology 2019; 57:e13346. [PMID: 30793775 DOI: 10.1111/psyp.13346] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 12/21/2018] [Accepted: 01/08/2019] [Indexed: 01/13/2023]
Abstract
This article provides an overview of P300 research from infancy through adolescence. First, a brief historical overview is provided highlighting seminal studies that began exploration of the P300 component in developmental groups. Overall, these studies suggest that the P300 can be detected in children and appears to reflect similar cognitive processes to those in adults; however, it is significantly delayed in its latency to peak. Second, two striking findings from developmental research are the lack of a clear P300 component in infancy and differential electrophysiological responses to novel, unexpected stimuli in children, adolescents, and adults. Third, contemporary questions are described, which include P300-like components in infancy, alteration of P300 in atypically developing groups, relations between P300 and behavior, individual differences of P300, and neural substrates of P300 across development. Finally, we conclude with comments regarding the power of a developmental perspective and suggestions for important issues that should be addressed in the next 50 years of P300 research.
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Affiliation(s)
- Tracy Riggins
- Department of Psychology, University of Maryland, College Park, Maryland
| | - Lisa S Scott
- Department of Psychology, University of Florida, Gainesville, Florida
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11
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Chen Y, Sha R, Xu L, Xia Y, Liu Y, Li X, Xie HQ, Tang N, Zhao B. 2,3,7,8-Tetrachlorodibenzo-p-dioxin promotes migration ability of primary cultured rat astrocytes via aryl hydrocarbon receptor. J Environ Sci (China) 2019; 76:368-376. [PMID: 30528028 DOI: 10.1016/j.jes.2018.05.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 05/25/2018] [Accepted: 05/28/2018] [Indexed: 06/09/2023]
Abstract
Emerging evidence showed that 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) could induce expression of certain reactivation-associated genes in astrocytes, however, the consequent cellular effects and molecular mechanisms are still unclear. During the process of astrocyte reactivation, migration is a critical cellular event. In the present study, we employed wound-healing assay and Transwell® motility assay to explore the effects of TCDD on cell migration in primary cultured rat cortical astrocytes. We found that upon TCDD treatments at relative low concentrations (10-10 and/or 10-9 mol/L), the ability of primary astrocytes to migrate horizontally and vertically was promoted. In line with this cellular effect, the mRNA expression of two pro-migratory genes, including cell division cycle 42 (CDC42) and matrix metalloproteinase 2 (MMP2) was induced by TCDD treatment. Dioxin exerts its toxic effects mainly through aryl hydrocarbon receptor (AhR) pathway. So the role of AhR pathway in the pro-migratory effects of TCDD was examined using an AhR antagonist, CH223191. We found that application of CH223191 significantly reversed the pro-migratory effects of TCDD. Interestingly, the basal ability of horizontal migration as well as basal levels of CDC42 and MMP2 expression were dramatically reduced suggesting a possible physiological role of AhR in maintaining the endogenous migration ability of the primary astrocytes. These findings support the notion that dioxin promotes astrocyte reactivation at molecular and cellular levels.
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Affiliation(s)
- Yangsheng Chen
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100085, China.
| | - Rui Sha
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100085, China
| | - Li Xu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100085, China
| | - Yingjie Xia
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100085, China
| | - Yiyun Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100085, China
| | - Xuejun Li
- Department of Occupational and Environmental Health, s, Tianjin Medical University, Tianjin 300070, China
| | - Heidi Qunhui Xie
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100085, China.
| | - Naijun Tang
- Department of Occupational and Environmental Health, s, Tianjin Medical University, Tianjin 300070, China
| | - Bin Zhao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100085, China.
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12
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Abstract
Toxic chemicals, either from natural sources or man-made, are ubiquitous in our environment. Many of the synthetic chemicals make life more comfortable and therefore production continues to grow. Simultaneously with the increase in production, an increase in neurodevelopmental disorders has been observed. Some chemicals are not biodegradable or have a very long half-life time and, despite the fact that production of a number of those chemicals has been severely reduced, they are still ubiquitous in the environment. Fetal exposure to toxic chemicals is dependent on maternal exposure to those chemicals and the developing stage of the fetus. Human evidence from epidemiologic studies is described with regard to the effect of prenatal exposure to various groups of neurotoxicants (alcohol, particulate fine matter, metals, and endocrine disrupting chemicals) on neurobehavior development. Data indicate that prenatal exposure to alcohol, polycyclic aromatic hydrocarbons, lead, methylmercury (MeHg), organophosphate pesticides (OPPs), and polychlorinated biphenyl ethers (PBDEs) impair cognitive development, whereas exposure to alcohol, MeHg, organochlorine pesticides and OPPs, polychlorinated biphenyls, PBDEs, and bisphenol A increases the risk of developing either attention deficit/hyperactivity and/or autism spectrum disorders. Psychomotor development appears to be less affected. However, data are not conclusive, which may depend on the assessment of exposure and the exposure level, among other factors.
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Affiliation(s)
- Margot van de Bor
- Department of Environment and Health, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.
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13
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Knutsen HK, Alexander J, Barregård L, Bignami M, Brüschweiler B, Ceccatelli S, Cottrill B, Dinovi M, Edler L, Grasl-Kraupp B, Hogstrand C, Nebbia CS, Oswald IP, Petersen A, Rose M, Roudot AC, Schwerdtle T, Vleminckx C, Vollmer G, Wallace H, Fürst P, Håkansson H, Halldorsson T, Lundebye AK, Pohjanvirta R, Rylander L, Smith A, van Loveren H, Waalkens-Berendsen I, Zeilmaker M, Binaglia M, Gómez Ruiz JÁ, Horváth Z, Christoph E, Ciccolallo L, Ramos Bordajandi L, Steinkellner H, Hoogenboom LR. Risk for animal and human health related to the presence of dioxins and dioxin-like PCBs in feed and food. EFSA J 2018; 16:e05333. [PMID: 32625737 PMCID: PMC7009407 DOI: 10.2903/j.efsa.2018.5333] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The European Commission asked EFSA for a scientific opinion on the risks for animal and human health related to the presence of dioxins (PCDD/Fs) and DL-PCBs in feed and food. The data from experimental animal and epidemiological studies were reviewed and it was decided to base the human risk assessment on effects observed in humans and to use animal data as supportive evidence. The critical effect was on semen quality, following pre- and postnatal exposure. The critical study showed a NOAEL of 7.0 pg WHO2005-TEQ/g fat in blood sampled at age 9 years based on PCDD/F-TEQs. No association was observed when including DL-PCB-TEQs. Using toxicokinetic modelling and taking into account the exposure from breastfeeding and a twofold higher intake during childhood, it was estimated that daily exposure in adolescents and adults should be below 0.25 pg TEQ/kg bw/day. The CONTAM Panel established a TWI of 2 pg TEQ/kg bw/week. With occurrence and consumption data from European countries, the mean and P95 intake of total TEQ by Adolescents, Adults, Elderly and Very Elderly varied between, respectively, 2.1 to 10.5, and 5.3 to 30.4 pg TEQ/kg bw/week, implying a considerable exceedance of the TWI. Toddlers and Other Children showed a higher exposure than older age groups, but this was accounted for when deriving the TWI. Exposure to PCDD/F-TEQ only was on average 2.4- and 2.7-fold lower for mean and P95 exposure than for total TEQ. PCDD/Fs and DL-PCBs are transferred to milk and eggs, and accumulate in fatty tissues and liver. Transfer rates and bioconcentration factors were identified for various species. The CONTAM Panel was not able to identify reference values in most farm and companion animals with the exception of NOAELs for mink, chicken and some fish species. The estimated exposure from feed for these species does not imply a risk.
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14
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Rathna R, Varjani S, Nakkeeran E. Recent developments and prospects of dioxins and furans remediation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 223:797-806. [PMID: 29986327 DOI: 10.1016/j.jenvman.2018.06.095] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Revised: 06/10/2018] [Accepted: 06/30/2018] [Indexed: 05/18/2023]
Abstract
Rapid urbanization and industrialization of anthropogenic activities have exerted immense pressure on the environment. Polyhalogenated organic compounds, especially dioxins and furans are regarded as ubiquitously persistent environmental pollutants in the ecosystem. The recalcitrant nature of dioxins and furans induce toxicity in both humans and wildlife. Dioxins and furans are generated by defective technological chemical processes that occur during the manufacture of herbicides and pesticides, use of fertilizers, bleaching of paper and wood pulp and incomplete combustion process. However, incineration and incomplete combustion of solid waste are the main cause for the discharge of dioxins and furans to the environment. During incineration and incomplete combustion, noxious flue gas and ashes are released into the atmosphere and contaminate the soil and water systems; thereby affecting the ecology. According to World Health Organization fact sheet 2016, more than 90% of human exposure to dioxins is through the food chain, especially from dairy products, seafood and meat. These pollutants are mutagenic, carcinogenic, immunotoxic and teratogenic for lower and higher forms of life i.e. microorganisms to humans. This review describes the sources of dioxins and furans pollution, hazardous effects on the ecosystem and recent techniques to minimize and treat dioxins and furans contaminants in the environment. This paper also previews the significance of conventional and latest remediation techniques prevailing around the globe for treating dioxins and furans entry into the ecosystem.
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Affiliation(s)
- Ravichandran Rathna
- Research Laboratory, Department of Biotechnology, Sri Venkateswara College of Engineering (Autonomous), Sriperumbudur Tk, 602 117, Tamil Nadu, India
| | - Sunita Varjani
- Gujarat Pollution Control Board, Sector-10A, Gandhinagar, 382 010, Gujarat, India
| | - Ekambaram Nakkeeran
- Research Laboratory, Department of Biotechnology, Sri Venkateswara College of Engineering (Autonomous), Sriperumbudur Tk, 602 117, Tamil Nadu, India.
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15
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LaKind JS, Lehmann GM, Davis MH, Hines EP, Marchitti SA, Alcala C, Lorber M. Infant Dietary Exposures to Environmental Chemicals and Infant/Child Health: A Critical Assessment of the Literature. ENVIRONMENTAL HEALTH PERSPECTIVES 2018; 126:96002. [PMID: 30256157 PMCID: PMC6375563 DOI: 10.1289/ehp1954] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 08/02/2018] [Accepted: 08/13/2018] [Indexed: 05/24/2023]
Abstract
BACKGROUND The benefits of breastfeeding to the infant and mother have been well documented. It is also well known that breast milk contains environmental chemicals, and numerous epidemiological studies have explored relationships between background levels of chemicals in breast milk and health outcomes in infants and children. OBJECTIVES In this paper, we examine epidemiological literature to address the following question: Are infant exposures to background levels of environmental chemicals in breast milk and formula associated with adverse health effects? We critically review this literature a) to explore whether exposure-outcome associations are observed across studies, and b) to assess the literature quality. METHODS We reviewed literature identified from electronic literature searches. We explored whether exposure-outcome associations are observed across studies by assessing the quality (using a modified version of a previously published quality assessment tool), consistency, and strengths and weaknesses in the literature. The epidemiological literature included cohorts from several countries and examined infants/children either once or multiple times over weeks to years. Health outcomes included four broad categories: growth and maturation, morbidity, biomarkers, and neurodevelopment. RESULTS The available literature does not provide conclusive evidence of consistent or clinically relevant health consequences to infants exposed to environmental chemicals in breast milk at background levels. CONCLUSIONS It is clear that more research would better inform our understanding of the potential for health impacts from infant dietary exposures to environmental chemicals. A critical data gap is a lack of research on environmental chemicals in formula and infant/child health outcomes. https://doi.org/10.1289/EHP1954.
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Affiliation(s)
- Judy S LaKind
- 1 LaKind Associates, LLC, Catonsville, Maryland, USA
- 2 Department of Epidemiology and Public Health, University of Maryland School of Medicine , Baltimore, Maryland, USA
| | - Geniece M Lehmann
- 3 Office of Research and Development (ORD), U.S. Environmental Protection Agency (EPA), Research Triangle Park , North Carolina, USA
| | - Matthew H Davis
- 4 Office of Children's Health Protection, U.S. EPA, Washington, District of Columbia, USA
| | - Erin P Hines
- 3 Office of Research and Development (ORD), U.S. Environmental Protection Agency (EPA), Research Triangle Park , North Carolina, USA
| | - Satori A Marchitti
- 5 Oak Ridge Institute for Science and Education (ORISE), ORD, U.S. EPA, Athens, Georgia, USA
| | - Cecilia Alcala
- 6 Association of Schools and Programs of Public Health (ASPPH), ORD, U.S. EPA, Washington, District of Columbia, USA
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16
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What Caused over a Century of Decline in General Intelligence? Testing Predictions from the Genetic Selection and Neurotoxin Hypotheses. EVOLUTIONARY PSYCHOLOGICAL SCIENCE 2018. [DOI: 10.1007/s40806-017-0131-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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17
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Hui LL, Lam HS, Lau EYY, Nelson EAS, Wong TW, Fielding R. Prenatal dioxin exposure and neurocognitive development in Hong Kong 11-year-old children. ENVIRONMENTAL RESEARCH 2016; 150:205-212. [PMID: 27295410 DOI: 10.1016/j.envres.2016.06.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 05/30/2016] [Accepted: 06/02/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND AND OBJECTIVES In utero exposure to dioxins and related compounds have been associated with adverse neurocognitive development in infants. It is unclear whether neurodevelopmental deficits persist to childhood. We assessed the association of prenatal dioxin exposure with neurocognitive function in 11-year-old children, and to test whether the association is modified by duration of breastfeeding. METHODS In this prospective study of 161 children born in Hong Kong in 2002, prenatal dioxin exposure was proxied by the dioxin toxicity equivalence (TEQ) in breast milk collected during the early postnatal period as determined by the Chemical-Activated LUciferase gene eXpression (CALUX) bioassay. We used multivariate linear regression analyses to assess the association of prenatal dioxin exposure with the performance on the Wechsler Intelligence Scale for Children-IV, Hong Kong, the Hong Kong List Learning Test, the Tests for Everyday Attention for Children and the Grooved Pegboard Test, adjusting for child's sex, mother's place of birth, mother's habitual seafood consumption, mother's age at delivery and socioeconomic position. RESULTS Measures of neurocognitive and intellectual function, including full-scale IQ, fine motor coordination, verbal and non-verbal reasoning, learning ability and attention at 11 years old did not show significant variations with prenatal dioxin exposures (proxied by CALUX-TEQ total dioxin load in early breast milk). None of these associations varied by breastfeeding duration or sex. CONCLUSIONS Neurocongitive function, as measured with psychological tests, in 11-year-old children was not associated with prenatal dioxin exposure to background levels of dioxins in the 2000s in Hong Kong.
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Affiliation(s)
- Lai Ling Hui
- School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region
| | - Hugh Simon Lam
- Department of Paediatrics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region.
| | - Esther Yuet Ying Lau
- Department of Psychological Studies, The Education University of Hong Kong, Hong Kong Special Administrative Region; Centre for Psychosocial Health, The Education University of Hong Kong, Hong Kong Special Administrative Region; Department of Psychiatry, The University of Hong Kong, Hong Kong Special Administrative Region
| | - Edmund Anthony Severn Nelson
- Department of Paediatrics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Tze Wai Wong
- School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Richard Fielding
- School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region
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18
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Madison G, Woodley of Menie MA, Sänger J. Secular Slowing of Auditory Simple Reaction Time in Sweden (1959-1985). Front Hum Neurosci 2016; 10:407. [PMID: 27588000 PMCID: PMC4988978 DOI: 10.3389/fnhum.2016.00407] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2016] [Accepted: 08/02/2016] [Indexed: 11/13/2022] Open
Abstract
There are indications that simple reaction time might have slowed in Western populations, based on both cohort- and multi-study comparisons. A possible limitation of the latter method in particular is measurement error stemming from methods variance, which results from the fact that instruments and experimental conditions change over time and between studies. We therefore set out to measure the simple auditory reaction time (SRT) of 7,081 individuals (2,997 males and 4,084 females) born in Sweden 1959-1985 (subjects were aged between 27 and 54 years at time of measurement). Depending on age cut-offs and adjustment for aging related slowing of SRT, the data indicate that SRT has increased by between 3 and 16 ms in the 27 birth years covered in the present sample. This slowing is unlikely to be explained by attrition, which was evaluated by comparing the general intelligence × birth-year interactions and standard deviations for both male participants and dropouts, utilizing military conscript cognitive ability data. The present result is consistent with previous studies employing alternative methods, and may indicate the operation of several synergistic factors, such as recent micro-evolutionary trends favoring lower g in Sweden and the effects of industrially produced neurotoxic substances on peripheral nerve conduction velocity.
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Affiliation(s)
- Guy Madison
- Department of Psychology, Umeå UniversityUmeå, Sweden
| | - Michael A. Woodley of Menie
- Department of Psychology, Technische Universität ChemnitzChemnitz, Germany
- Center Leo Apostel for Interdisciplinary Studies, Vrije Universiteit BrusselBrussels, Belgium
| | - Justus Sänger
- Department of Psychology, Technische Universität ChemnitzChemnitz, Germany
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Effects of Perinatal Dioxin Exposure on Development of Children during the First 3 Years of Life. J Pediatr 2016; 175:159-166.e2. [PMID: 27189679 DOI: 10.1016/j.jpeds.2016.04.064] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 03/03/2016] [Accepted: 04/19/2016] [Indexed: 12/31/2022]
Abstract
OBJECTIVE To investigate the longitudinal effects of perinatal exposure to dioxin on neurodevelopment and physical growth of a birth cohort during the first 3 years of life. STUDY DESIGN A total of 217 mother-infant pairs living in a dioxin-contaminated area in Vietnam were followed up. Perinatal dioxin exposure of infants was estimated by the measurement of dioxin levels in breast milk of nursing mothers. Neurodevelopment of infants and children, including cognitive, language, and motor development, was determined at 4 months, 1 year, and 3 years of age. Physical growth, including weight, height, and head and abdominal circumferences, was measured at birth, 1 and 4 months, and 1 and 3 years of age. Multivariate mixed models were applied for analyzing repeated measures. RESULTS In boys, composite motor and gross motor scores were decreased with increasing exposure of 2,3,7,8-tetrachlorodibenzo-p-dioxin (2,3,7,8-TetraCDD). The high toxic equivalent of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDDs/PCDFs-TEQ) group showed a significant decrease in expressive communication score. In girls, there was no decreased score in any neurodevelopment aspects in high-exposure groups. All body size measures in boys were decreased in the high-exposure groups of 2,3,7,8-TetraCDD and PCDDs/PCDFs-TEQ. In girls, high 2,3,7,8-TetraCDD and PCDDs/PCDFs-TEQ exposure was associated with increased head and abdominal circumferences. CONCLUSIONS Perinatal dioxin exposure affects physical growth and neurodevelopment of infants and children in the first 3 years of life in a sex-specific manner.
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20
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In utero exposure to carcinogens: Epigenetics, developmental disruption and consequences in later life. Maturitas 2016; 86:59-63. [DOI: 10.1016/j.maturitas.2016.01.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 01/14/2016] [Indexed: 02/07/2023]
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21
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Tran NN, Pham TT, Ozawa K, Nishijo M, Nguyen ATN, Tran TQ, Hoang LV, Tran AH, Phan VHA, Nakai A, Nishino Y, Nishijo H. Impacts of Perinatal Dioxin Exposure on Motor Coordination and Higher Cognitive Development in Vietnamese Preschool Children: A Five-Year Follow-Up. PLoS One 2016; 11:e0147655. [PMID: 26824471 PMCID: PMC4732982 DOI: 10.1371/journal.pone.0147655] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Accepted: 01/06/2016] [Indexed: 01/27/2023] Open
Abstract
Dioxin concentrations remain elevated in the environment and in humans residing near former US Air Force bases in South Vietnam. Our previous epidemiological studies showed adverse effects of dioxin exposure on neurodevelopment for the first 3 years of life. Subsequently, we extended the follow-up period and investigated the influence of perinatal dioxin exposure on neurodevelopment, including motor coordination and higher cognitive ability, in preschool children. Presently, we investigated 176 children in a hot spot of dioxin contamination who were followed up from birth until 5 years old. Perinatal dioxin exposure levels were estimated by measuring dioxin levels in maternal breast milk. Dioxin toxicity was evaluated using two indices; toxic equivalent (TEQ)-polychlorinated dibenzo-p-dioxins/furans (PCDDs/Fs) and concentration of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). Coordinated movements, including manual dexterity, aiming and catching, and balance, were assessed using the Movement Assessment Battery for Children, Second Edition (Movement ABC-2). Cognitive ability was assessed using the nonverbal index (NVI) of the Kaufman Assessment Battery for Children, Second Edition (KABC-II). In boys, total test and balance scores of Movement ABC-2 were significantly lower in the high TEQ- PCDDs/Fs group compared with the moderate and low exposure groups. NVI scores and the pattern reasoning subscale of the KABC-II indicating planning ability were also significantly lower in the high TCDD exposure group compared with the low exposure group of boys. However, in girls, no significant differences in Movement ABC-2 and KABC-II scores were found among the different TEQ-PCDDs/Fs and TCDD exposure groups. Furthermore, in high risk cases, five boys and one girl highly exposed to TEQ-PCDDs/Fs and TCDD had double the risk for difficulties in both neurodevelopmental skills. These results suggest differential impacts of TEQ-PCDDs/Fs and TCDD exposure on motor coordination and higher cognitive ability, respectively. Moreover, high TEQ-PCDDs/Fs exposure combined with high TCDD exposure may increase autistic traits combined with developmental coordination disorder.
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Affiliation(s)
- Nghi Ngoc Tran
- Department of Epidemiology and Public Health, Kanazawa Medical University, 1–1 Daigaku, Uchinada, Ishikawa, 920–0293, Japan
- Ministry of Health, Vietnam Government, Ha Noi, Vietnam
| | - Tai The Pham
- Biomedical and Pharmaceutical Research Center, Vietnam Military Medical University, Ha Noi, Vietnam
| | - Kyoko Ozawa
- System Emotional Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama, 930–0194, Japan
| | - Muneko Nishijo
- Department of Epidemiology and Public Health, Kanazawa Medical University, 1–1 Daigaku, Uchinada, Ishikawa, 920–0293, Japan
- * E-mail:
| | | | | | - Luong Van Hoang
- Biomedical and Pharmaceutical Research Center, Vietnam Military Medical University, Ha Noi, Vietnam
| | - Anh Hai Tran
- Biomedical and Pharmaceutical Research Center, Vietnam Military Medical University, Ha Noi, Vietnam
| | - Vu Huy Anh Phan
- Dong Nai General Hospital, Bien Hoa City, Dong Nai Province, Vietnam
| | - Akio Nakai
- Department of Pediatric Neurology, Hyogo Children’s Sleep and Development Medical Research Center, Hyogo Rehabilitation Center Hospital, 1070 Akebono, Nishi-ku, Kobe, Hyogo, 651–2181, Japan
| | - Yoshikazu Nishino
- Department of Epidemiology and Public Health, Kanazawa Medical University, 1–1 Daigaku, Uchinada, Ishikawa, 920–0293, Japan
| | - Hisao Nishijo
- System Emotional Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama, 930–0194, Japan
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Tavakoly Sany SB, Narimani L, Soltanian FK, Hashim R, Rezayi M, Karlen DJ, Mahmud HNME. An overview of detection techniques for monitoring dioxin-like compounds: latest technique trends and their applications. RSC Adv 2016. [DOI: 10.1039/c6ra11442c] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Dioxin-like compounds (DLCs) are considered as persistent bioaccumulative toxicants with a number of continuing issues in the fields of ecotoxicology and bioassay.
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Affiliation(s)
| | - Leila Narimani
- Chemistry Department
- Faculty of Science
- University Malaya
- 50603 Kuala Lumpur
- Malaysia
| | | | - Rosli Hashim
- Institute of Biological Sciences University of Malaya
- 50603 Kuala Lumpur
- Malaysia
| | - Majid Rezayi
- Chemistry Department
- Faculty of Science
- University Malaya
- 50603 Kuala Lumpur
- Malaysia
| | - David J. Karlen
- Environmental Protection Commission of Hillsborough County
- Tampa
- USA
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Tavakoly Sany SB, Hashim R, Salleh A, Rezayi M, Karlen DJ, Razavizadeh BBM, Abouzari-Lotf E. Dioxin risk assessment: mechanisms of action and possible toxicity in human health. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:19434-50. [PMID: 26514567 DOI: 10.1007/s11356-015-5597-x] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 10/08/2015] [Indexed: 05/11/2023]
Abstract
Dioxin-like compounds (DLCs) have been classified by the World Health Organization (WHO) as one of the most persistent toxic chemical substances in the environment, and they are associated with several occupational activities and industrial accidents around the world. Since the end of the 1970s, these toxic chemicals have been banned because of their human toxicity potential, long half-life, wide dispersion, and they bioaccumulate in the food web. This review serves as a primer for environmental health professionals to provide guidance on short-term risk assessment of dioxin and to identify key findings for health and exposure assessment based on policies of different agencies. It also presents possible health effects of dioxins, mechanisms of action, toxic equivalency factors (TEFs), and dose-response characterization. Key studies related to toxicity values of dioxin-like compounds and their possible human health risk were identified through PubMed and supplemented with relevant studies characterized by reviewing the reference lists in the review articles and primary literature. Existing data decreases the scope of analyses and models in relevant studies to a manageable size by focusing on the set of important studies related to the perspective of developing toxicity values of DLCs.
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Affiliation(s)
| | - Rosli Hashim
- Institute of Biological Sciences, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Aishah Salleh
- Institute of Biological Sciences, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Majid Rezayi
- Chemistry Department, Faculty of Science, University Malaya, 50603, Kuala Lumpur, Malaysia
| | - David J Karlen
- Environmental Protection Commission of Hillsborough County, 3629 Queen Palm Drive, Tampa, FL, 33619-1309, USA
| | - Bi Bi Marzieh Razavizadeh
- Department of Food Chemistry, Research Institute of Food Science and Technology, P.O. Box: 91735-147, Mashhad, Iran
| | - Ebrahim Abouzari-Lotf
- Advanced Materials Research Group, Institute of Hydrogen Economy, Universiti Teknologi Malaysia, International Campus, 54100, Kuala Lumpur, Malaysia
- Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, 54100, Kuala Lumpur, Malaysia
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Wittsiepe J, Fobil JN, Till H, Burchard GD, Wilhelm M, Feldt T. Levels of polychlorinated dibenzo-p-dioxins, dibenzofurans (PCDD/Fs) and biphenyls (PCBs) in blood of informal e-waste recycling workers from Agbogbloshie, Ghana, and controls. ENVIRONMENT INTERNATIONAL 2015; 79:65-73. [PMID: 25797584 DOI: 10.1016/j.envint.2015.03.008] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Revised: 03/03/2015] [Accepted: 03/03/2015] [Indexed: 05/23/2023]
Abstract
The formation and environmental release of highly toxic organohalogen compounds associated with informal recycling of waste electric and electronic equipment (e-waste) is a growing problem at e-waste dumps/recycling sites (EWRSs) in many developing countries worldwide. We chose a cross-sectional study design to measure the internal exposure to polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) as well as polychlorinated biphenyls (PCBs) of individuals working on one of the largest EWRSs of Africa, located at Agbogbloshie, Accra, Ghana, and in controls from a suburb of Accra without direct exposure to EWRS activities. In whole blood samples of 21 age matched male exposed individuals (mean age: 24.7 years, SD 6.0) and 21 male controls (mean age: 24.4 years, SD 5.7) 17 PCDD/F congeners were determined. Moreover three indicator PCB congeners (#138, #153 and #180) were measured in blood of 39 exposed (mean age: 27.5 years, SD 11.7) and 19 non-exposed (mean age: 26.8 years, SD 9.7) patients. Besides a health examination, biometric and demographic data, residential and occupational history, occupational exposures and working conditions were recorded using a standardized questionnaire. In the exposed group, median PCDD/F-concentrations were 6.18 pg/g lipid base WHO2005-TEq (range: 2.1-42.7) and significantly higher compared to the control group with 4.60 pg/g lipid base WHO2005-TEq (range: 1.6-11.6). Concentrations were different for 2,3,7,8-TetraCDD, three HexaCDD and all 10 PCDF congeners, indicating a combustion pattern. Using a multivariate regression analysis exposure to EWRS activities was the most important determinant for PCDD/F exposure. Median PCB levels for the indicator congeners #138, #153 and #180 were 0.011, 0.019 and 0.008 μg/l whole blood (ranges: 0.002-0.18, 0.003-0.16, 0.002-0.078) in the exposed group and, surprisingly, significantly higher in the controls (0.037, 0.062 and 0.022; ranges: 0.005-0.46, 0.010-0.46, 0.004-0.21). In a multivariate regression approach e-waste related activities had no positive influence on internal PCB exposure, but rather the time living in Accra. The internal PCB exposure is in particular notable for a country where PCBs have historically never been produced or used. The impact of EWRS activities on organohalogen compound exposure of individuals working at and living in the surroundings of the Agbogbloshie EWRS, and the surprisingly high PCB exposure of people living in Accra not involved in e-waste activities require further investigation.
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Affiliation(s)
- Jürgen Wittsiepe
- Department of Hygiene, Social and Environmental Medicine, Ruhr-University Bochum, Bochum, Germany.
| | - Julius N Fobil
- Department of Biological, Environmental & Occupational Health Sciences, School of Public Health, University of Ghana, P.O. Box LG13, Legon, Ghana
| | - Holger Till
- GIZ-Regional Coordination Unit for HIV & TB (GiZ-ReCHT), P.O. Box 9698, K.I.A. 32, Cantonment Crescent, Cantonment, Accra, Ghana
| | - Gerd-Dieter Burchard
- Clinical Research Unit, Bernhard Nocht Institute for Tropical Medicine, Bernhard-Nocht Str. 74, 20359 Hamburg, Germany; Department of Medicine, Section Infectious Diseases and Tropical Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Michael Wilhelm
- Department of Hygiene, Social and Environmental Medicine, Ruhr-University Bochum, Bochum, Germany
| | - Torsten Feldt
- Clinical Research Unit, Bernhard Nocht Institute for Tropical Medicine, Bernhard-Nocht Str. 74, 20359 Hamburg, Germany; Clinic of Gastroenterology, Hepatology and Infectious Diseases, University Hospital Düsseldorf, Moorenstr. 5, 40225 Düsseldorf, Germany
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Liu G, Asanoma K, Takao T, Tsukimori K, Uchi H, Furue M, Kato K, Wake N. Aryl hydrocarbon receptor SNP -130 C/T associates with dioxins susceptibility through regulating its receptor activity and downstream effectors including interleukin 24. Toxicol Lett 2014; 232:384-92. [PMID: 25445724 DOI: 10.1016/j.toxlet.2014.11.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 11/14/2014] [Accepted: 11/21/2014] [Indexed: 12/25/2022]
Abstract
Dioxins are persistent environmental pollutants that cause multiple adverse health effects in humans, mainly through binding to the ligand-activated transcription factor, aryl hydrocarbon receptor (AhR). Genetic variation in AhR may modulate the susceptibility to dioxins. In this study, we aimed to evaluate the effects of the single nucleotide polymorphism (SNP) -130 C/T in the AhR promoter on dioxin-inducible gene transcription, and to investigate interleukin-24 (IL-24) and interleukin-1β (IL-1β) as proxies for 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) exposure. Using primary human chorionic stromal cells, we found that cells with the TT genotype showed higher AhR mRNA and protein levels than did those of the CC genotype. Microarray was carried out to analyze the gene expression profiles of cells (CC and TT genotype) after exposing the cells to TCDD. Several genes associated with human disorders were more highly up-regulated in cells of the TT genotype. Higher up-regulation of IL-24 and IL-1β mRNA in cells with the TT genotype was observed. Furthermore, blood samples from 64 Yusho patients who were accidentally exposed to high concentrations of dioxins were analyzed for the genotype, dioxins concentrations and serum levels of IL-24 and IL-1β. We observed higher serum IL-24 levels and lower serum IL-1β levels in Yusho patients with the TT genotype than in those with the CC genotype. AhR SNP -130 C/T affects serum IL-24 and IL-1β levels, independently of serum dioxins concentrations in Yusho patients. Our observations demonstrate that SNP -130 C/T modulates AhR expression and expression levels of IL-24 and IL-1β, and suggest an association of AhR SNP -130 C/T with the susceptibility to dioxins.
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Affiliation(s)
- Ge Liu
- Department of Genomic Epidemiology, Research Center for Environment and Developmental Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kazuo Asanoma
- Department of Obstetrics and Gynecology, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan
| | - Tomoka Takao
- Department of Genomic Epidemiology, Research Center for Environment and Developmental Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kiyomi Tsukimori
- Department of Obstetrics, Fukuoka Children's Hospital, Fukuoka, Japan
| | - Hiroshi Uchi
- Research and Clinical Center for Yusho and Dioxins, Kyushu University Hospital, Fukuoka, Japan; Department of Dermatology, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan
| | - Masutaka Furue
- Research and Clinical Center for Yusho and Dioxins, Kyushu University Hospital, Fukuoka, Japan; Department of Dermatology, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan
| | - Kiyoko Kato
- Department of Obstetrics and Gynecology, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan
| | - Norio Wake
- Department of Genomic Epidemiology, Research Center for Environment and Developmental Medical Sciences, Kyushu University, Fukuoka, Japan.
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Woodley MA, te Nijenhuis J, Murphy R. Is there a dysgenic secular trend towards slowing simple reaction time? Responding to a quartet of critical commentaries. INTELLIGENCE 2014. [DOI: 10.1016/j.intell.2014.05.012] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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