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Martins MF, Costa PG, Bianchini A. Assessing multigenerational exposure to metals in elasmobranchs: Maternal transfer of contaminants in a yolk-sac viviparous species. MARINE POLLUTION BULLETIN 2022; 175:113364. [PMID: 35093781 DOI: 10.1016/j.marpolbul.2022.113364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/13/2022] [Accepted: 01/16/2022] [Indexed: 06/14/2023]
Abstract
This study aimed to assess the maternal offloading of metals in the Brazilian guitarfishPseudobatos horkelii through determining essential (Cr, Cu, Fe) and non-essential (Cd, Hg, Pb) metal concentrations along two generations of this species: pregnant females and offspring. The maximum transfer capacity (ECER) and offspring/mother ratio were calculated to estimate the extent of offloading, as well as the proportion of contaminants presented in offspring related to the maternal concentrations. Transfer efficiency was element-dependent. Chromium had the highest ECER (99.7%), followed by Hg (67.7%). Other essential metals were less transferred (9.6-35.6%) and Cd and Pb were not detected in uterine content samples. The relationships between maternal length and concentration, as well as transfer capacity were not significant, indicating that females might be continuously exposed, and that offloading might not excrete metals efficiently. On the other hand, embryos are exposed to these elements which could impair embryonic development.
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Affiliation(s)
- Mariana F Martins
- Programa de Pós-Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande-FURG, Av. Itália Km 8, 96203-900, Rio Grande, Brazil.
| | - Patrícia G Costa
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande-FURG, Av. Itália Km 8, 96203-900, Rio Grande, Brazil
| | - Adalto Bianchini
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande-FURG, Av. Itália Km 8, 96203-900, Rio Grande, Brazil
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Tasin FR, Ahmed A, Halder D, Mandal C. On-going consequences of in utero exposure of Pb: An epigenetic perspective. J Appl Toxicol 2022; 42:1553-1569. [PMID: 35023172 DOI: 10.1002/jat.4287] [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: 08/01/2021] [Revised: 12/23/2021] [Accepted: 01/01/2022] [Indexed: 11/08/2022]
Abstract
Epigenetic modifications by toxic heavy metals are one of the intensively investigated fields of modern genomic research. Among a diverse group of heavy metals, lead (Pb) is an extensively distributed toxicant causing an immense number of abnormalities in the developing fetus via a wide variety of epigenetic changes. As a divalent cation, Pb can readily cross the placental membrane and the fetal blood brain barrier leading to far-reaching alterations in DNA methylation patterns, histone protein modifications and micro-RNA expression. Over recent years, several human cohorts and animal model studies have documented hyper- and hypo-methylation of developmental genes along with altered DNA methyl-transferase expression by in utero Pb exposure in a dose-, duration- and sex-dependent manner. Modifications in the expression of specific histone acetyltransferase enzymes along with histone acetylation and methylation levels have been reported in rodent and murine models. Apart from these, down-regulation and up-regulation of certain microRNAs crucial for fetal development have been shown to be associated with in utero Pb exposure in human placenta samples. All these modifications in the developing fetus during the prenatal and perinatal stages reportedly caused severe abnormalities in early or adult age, such as - impaired growth, obesity, autism, diabetes, cardiovascular diseases, risks of cancer development and Alzheimer's disease. In this review, currently available information on Pb-mediated alterations in the fetal epigenome is summarized. Further research on Pb-induced epigenome modification will help to understand the mechanisms in detail and will enable us to formulate safety guidelines for pregnant women and developing children.
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Affiliation(s)
- Fahim Rejanur Tasin
- Biotechnology and Genetic Engineering Discipline, Khulna University, Khulna, Bangladesh
| | - Asif Ahmed
- Biotechnology and Genetic Engineering Discipline, Khulna University, Khulna, Bangladesh
| | - Debasish Halder
- Rare Disease research center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - Chanchal Mandal
- Biotechnology and Genetic Engineering Discipline, Khulna University, Khulna, Bangladesh
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Kaur M, Sharma P, Kaur R, Khetarpal P. Increased incidence of spontaneous abortions on exposure to cadmium and lead: a systematic review and meta-analysis. Gynecol Endocrinol 2022; 38:16-21. [PMID: 34169802 DOI: 10.1080/09513590.2021.1942450] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Spontaneous abortions are the most severe complication of early pregnancy and are a major reproductive health problem. Although this could be caused due to various cytogenetic, immunological, or endocrinological reasons, role of environmental toxicants cannot be ruled out. In order to explore the role of cadmium and lead in causing spontaneous abortions, current systematic review and meta-analysis had been carried out. METHODOLOGY Literature search was performed using appropriate keywords in PubMed, Science Direct, Cochrane Library, and Google Scholar databases up to December 25 2020 according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines (PRISMA). Metananalysis was carried out with the help of RevMan software (version 5.3). RESULTS Meta-analysis of nine studies on cadmium concentrations in blood of women with at least one spontaneous abortions and controls revealed standardized mean difference (SMD)=3.39, 95% CI (2.17, 4.61), with p < .05. Similarly, meta-analysis of eight studies on lead concentrations revealed standardized mean difference (SMD)=6.24, 95% CI (4.34, 8.14), with p < .05. CONCLUSION Populations exposed to heavy metals such as cadmium and lead are at higher risk of pregnancy loss. Therefore, couples experiencing repeated pregnancy losses may be screened for heavy metal load.
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Affiliation(s)
- Mandeep Kaur
- Department of Human Genetics, Punjabi University, Patiala, India
| | - Priya Sharma
- Laboratory for Reproductive and Developmental Disorders, Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda, India
| | - Rajinder Kaur
- Department of Human Genetics, Punjabi University, Patiala, India
| | - Preeti Khetarpal
- Department of Human Genetics, Punjabi University, Patiala, India
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Mohanraj N, Joshi NS, Poulose R, Patil RR, Santhoshkumar R, Kumar A, Waghmare GP, Saha AK, Haider SZ, Markandeya YS, Dey G, Rao LT, Govindaraj P, Mehta B. A proteomic study to unveil lead toxicity-induced memory impairments invoked by synaptic dysregulation. Toxicol Rep 2022; 9:1501-1513. [DOI: 10.1016/j.toxrep.2022.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/02/2022] [Accepted: 07/05/2022] [Indexed: 11/17/2022] Open
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Assessment of lead and mercury levels in maternal blood, fetal cord blood and placenta in pregnancy with intrauterine growth restriction. JOURNAL OF BASIC AND CLINICAL HEALTH SCIENCES 2021. [DOI: 10.30621/jbachs.1008609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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56
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Shin K, Lim G, Hong YS, Kim S, Hwang S, Lee J, Sin S, Cho A, Kim Y, Gautam R, Jo J, Acharya M, Maharjan A, Lee D, K C PB, Kim C, Heo Y, Kim HA. Exposure to lead on expression levels of brain immunoglobulins, inflammatory cytokines, and brain-derived neurotropic factor in fetal and postnatal mice with autism-like characteristics. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2021; 84:891-900. [PMID: 34187350 DOI: 10.1080/15287394.2021.1945985] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Autism spectrum disorders (ASD) are neurodevelopmental disorders, and their incidence is increasing worldwide. Increased exposure to environmental metal lead (Pb) has been proposed as a risk factor associated with ASD. In the present study, BTBR T+ tf/J (BTBR) mice with ASD-like behavioral characteristics and control FVB mice were exposed gestationally and/or neonatally to Pb, and compared with highly social FVB mice to investigate neuroimmunological abnormalities. IgG1 and IgG2a levels in fetal brains from BTBR dams exposed to Pb (BTBR-Pb) were significantly higher than those of BTBR-controls (BTBR-C). However, this change did not occur in FVB mice exposed to Pb. The IgG1:IgG2a ratio was higher in both fetal and postnatal brains of BTBR mice compared to FVB animals regardless of Pb exposure. The IL-4:IFN-γ ratio was elevated in BTBR-Pb relative to BTBR-C mice, but this ratio was not markedly affected following Pb exposure in FVB animals. These findings suggest the potential for a Pb-driven predominant TH2-like reactivity profile in brain microenvironment present in BTBR mice. Brain-derived neurotrophic factor was decreased in fetal and postnatal BTBR-Pb brains relative to BTBR-C brains but not in FVB-Pb relative to FVB-C mice. Taken together, data demonstrate that Pb exposure might contribute to developmental brain abnormalities associated with ASD, particularly in individuals with genetic susceptibility to ASD.
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Affiliation(s)
- KyeongMin Shin
- Department Occupational Health, College of Bio and Medical Sciences, Daegu Catholic University, Gyeongsan, Republic of Korea
| | - GyeongDong Lim
- Department Occupational Health, College of Bio and Medical Sciences, Daegu Catholic University, Gyeongsan, Republic of Korea
| | - Young-Seoub Hong
- Department of Preventive Medicine, College of Medicine, Dong-A University, Busan, Republic of Korea
| | - SoNam Kim
- Department Occupational Health, College of Bio and Medical Sciences, Daegu Catholic University, Gyeongsan, Republic of Korea
| | - SoRyeon Hwang
- Department Occupational Health, College of Bio and Medical Sciences, Daegu Catholic University, Gyeongsan, Republic of Korea
| | - JaeHee Lee
- Department Occupational Health, College of Bio and Medical Sciences, Daegu Catholic University, Gyeongsan, Republic of Korea
| | - SoJung Sin
- Department Occupational Health, College of Bio and Medical Sciences, Daegu Catholic University, Gyeongsan, Republic of Korea
| | - AhRang Cho
- Department Occupational Health, College of Bio and Medical Sciences, Daegu Catholic University, Gyeongsan, Republic of Korea
| | - YeonGyeong Kim
- Department Occupational Health, College of Bio and Medical Sciences, Daegu Catholic University, Gyeongsan, Republic of Korea
| | - Ravi Gautam
- Department Occupational Health, College of Bio and Medical Sciences, Daegu Catholic University, Gyeongsan, Republic of Korea
| | - JiHun Jo
- Department Occupational Health, College of Bio and Medical Sciences, Daegu Catholic University, Gyeongsan, Republic of Korea
| | - Manju Acharya
- Department Occupational Health, College of Bio and Medical Sciences, Daegu Catholic University, Gyeongsan, Republic of Korea
| | - Anju Maharjan
- Department Occupational Health, College of Bio and Medical Sciences, Daegu Catholic University, Gyeongsan, Republic of Korea
| | - DaEun Lee
- Department Occupational Health, College of Bio and Medical Sciences, Daegu Catholic University, Gyeongsan, Republic of Korea
| | - Pramod B K C
- Graduate School Department of Toxicology, Daegu Catholic University, Gyeongsan, Republic of Korea
| | - ChangYul Kim
- Graduate School Department of Toxicology, Daegu Catholic University, Gyeongsan, Republic of Korea
| | - Yong Heo
- Department Occupational Health, College of Bio and Medical Sciences, Daegu Catholic University, Gyeongsan, Republic of Korea
- Graduate School Department of Toxicology, Daegu Catholic University, Gyeongsan, Republic of Korea
| | - Hyoung-Ah Kim
- Department of Preventive Medicine, College of Medicine, the Catholic University of Korea, Seoul, Republic of Korea
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Rahman ML, Oken E, Hivert MF, Rifas-Shiman S, Lin PID, Colicino E, Wright RO, Amarasiriwardena C, Claus Henn BG, Gold DR, Coull BA, Cardenas A. Early pregnancy exposure to metal mixture and birth outcomes - A prospective study in Project Viva. ENVIRONMENT INTERNATIONAL 2021; 156:106714. [PMID: 34147999 PMCID: PMC8842844 DOI: 10.1016/j.envint.2021.106714] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 06/07/2021] [Accepted: 06/09/2021] [Indexed: 05/19/2023]
Abstract
BACKGROUND Prenatal exposure to metals has been individually associated with birth outcomes. However, little is known about the effect of metal mixture, particularly at low exposure levels. OBJECTIVES To estimate individual and joint effects of metal mixture components on birth outcomes. METHODS We used data from 1,391 mother-infant pairs in Project Viva (1999-2002). We measured 11 metals in maternal 1st trimester erythrocyte; abstracted birth weight from medical records; calculated gestational age from last menstrual period or ultrasound; and obtained birth length (n = 729) and head circumference (n = 791) from research measurements. We estimated individual and joint effects of metals using multivariable linear and Bayesian kernel machine regressions. RESULTS In both single metal and metal mixture analyses, exposure to higher concentrations of arsenic was associated with lower birth weight in males, zinc with higher head circumference in females, and manganese with higher birth length in sex-combined analysis. We also observed sex-specific metal interactions with birth outcomes. Arsenic and manganese showed a synergistic association with birth weight in males, in whom an interquartile range (IQR) increase in arsenic was associated with 25.3 g (95% CI: -79.9, 29.3), 47.9 g (95% CI: -98.0, 2.1), and 72.2 g (95% CI: -129.8, -14.7) lower birth weight when manganese concentrations were at 25th, 50th, and 75th percentiles, respectively. Lead and zinc showed an antagonistic association with head circumference in males, where an IQR increase in lead was associated with 0.18 cm (95% CI: -0.35, -0.02), 0.10 cm (95% CI: -0.25, 0.04), 0.03 cm (95% CI: -0.2, 0.14) smaller head circumference when zinc concentrations were at 25th, 50th, and 75th percentiles, respectively. Exposure to higher concentrations of arsenic was also associated with lower gestational age in males when concentrations of manganese and lead were higher. DISCUSSION Maternal erythrocyte concentrations of arsenic, manganese, lead, and zinc were individually and interactively associated with birth outcomes. The associations varied by infant sex and exposure level of other mixture components.
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Affiliation(s)
- Mohammad L Rahman
- Division of Chronic Disease Research Across the Lifecourse, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA, USA
| | - Emily Oken
- Division of Chronic Disease Research Across the Lifecourse, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA, USA
| | - Marie-France Hivert
- Division of Chronic Disease Research Across the Lifecourse, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA, USA; Diabetes Unit, Massachusetts General Hospital, Boston, MA, USA
| | - Sheryl Rifas-Shiman
- Division of Chronic Disease Research Across the Lifecourse, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA, USA
| | - Pi-I D Lin
- Division of Chronic Disease Research Across the Lifecourse, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA, USA
| | - Elena Colicino
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Robert O Wright
- Department of Environmental Medicine and Institute for Exposomic Research, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Chitra Amarasiriwardena
- Department of Environmental Medicine and Institute for Exposomic Research, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Birgit G Claus Henn
- Department of Environmental Health, Boston University School of Public Health, Boston, MA 02118, USA
| | - Diane R Gold
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Brent A Coull
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Department of Biostatistics, Harvard T. H. Chan School of Public Health, Boston, MA, USA
| | - Andres Cardenas
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, Berkeley, CA, USA.
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Gunawardena SA, Ranasinghe M, Ranchamali T, Dileka P, Gunawardana JW. Kidney Cadmium Concentrations in an Urban Sri Lankan Population: an Autopsy Study. Biol Trace Elem Res 2021; 199:4045-4054. [PMID: 33409914 DOI: 10.1007/s12011-020-02541-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 12/09/2020] [Indexed: 11/25/2022]
Abstract
Contamination and bioaccumulation of toxic heavy metals in our geo-environment is a growing public health concern. Human biomonitoring is an essential step in assessing the population risk of chronic exposure to environmental contaminants. Whole kidneys collected from a cohort of 92 deceased individuals undergoing forensic autopsies in Colombo, Sri Lanka, were analysed for cadmium (Cd) bioaccumulation using ICP-MS. Mean age of the population was 55.4 ± 15.4 years. Mean and median renal Cd concentrations of the total population were 4.38 and 2.60 μg g-1 w/w, respectively, which were below estimated toxic ranges. Males accumulated higher levels of Cd than females (p = 0.377). Cd concentrations were higher in the < 60 age group than the > 60 age group (p = 0.92), while the highest levels were reported in 51-60 age group. However, no significant correlation was found between renal Cd concentration and age (Ʈb = - 0.005, p = 0.94). Individuals who smoked, chewed betel or consumed alcohol were found to have elevated renal Cd concentrations in comparison to those who did not use these substances. This is the largest autopsy study on renal Cd bioaccumulation in Sri Lanka, and the findings do not indicate a high exposure risk to environmental Cd contamination at present.
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Affiliation(s)
- S A Gunawardena
- Department of Forensic Medicine & Toxicology, Faculty of Medicine, University of Colombo, No. 25, Kynsey Road, Colombo, 00800, Sri Lanka.
| | - M Ranasinghe
- Department of Forensic Medicine & Toxicology, Faculty of Medicine, University of Colombo, No. 25, Kynsey Road, Colombo, 00800, Sri Lanka
| | - T Ranchamali
- Department of Forensic Medicine & Toxicology, Faculty of Medicine, University of Colombo, No. 25, Kynsey Road, Colombo, 00800, Sri Lanka
| | - P Dileka
- Department of Forensic Medicine & Toxicology, Faculty of Medicine, University of Colombo, No. 25, Kynsey Road, Colombo, 00800, Sri Lanka
| | - J W Gunawardana
- Department of Forensic Medicine & Toxicology, Faculty of Medicine, University of Colombo, No. 25, Kynsey Road, Colombo, 00800, Sri Lanka
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Simokon MV, Trukhin AM. Analysis of essential and non-essential trace elements in the organs of a mother-fetus pair of spotted seals (Phoca largha) from the Sea of Japan. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:60622-60634. [PMID: 34164788 DOI: 10.1007/s11356-021-14971-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 06/14/2021] [Indexed: 06/13/2023]
Abstract
Concentrations of 22 essential and non-essential trace elements (Be, Al, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Mo, Ag, Cd, Sb, Ba, Tl, Pb, Th, U, and Hg) were measured in the organs of a mother-fetus pair (at the last trimester of pregnancy) of spotted seals from the Sea of Japan. The concentrations of eleven elements are reported for the first time. Eight organs of the pair were examined: lungs, heart, liver, kidneys, intestines, spleen, muscles, and bones. All trace elements detected in the organs of the mother were found also in the organs of the fetus at various concentrations. Placenta is not an effective barrier to prevent non-essential elements from getting into the fetus, but can control entry of some of them, e.g., aluminum, cadmium, and mercury. In most organs of the fetus, the concentrations of toxic trace elements (beryllium, antimony, thorium, and uranium) were noticeably higher than in the same organs of the mother, which indicates that during pregnancy female removes excess of non-essential trace elements by transferring them to the fetal body through the placental barrier.
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Affiliation(s)
- Mikhail V Simokon
- Pacific Branch, Russian Federal Research Institute of Fisheries and Oceanography (VNIRO), per. Shevchenko 4, Vladivostok, Russia, 690091
| | - Alexey M Trukhin
- V.I. Il'ichev Pacific Oceanological Institute, Far Eastern Branch, Russian Academy of Sciences, ul. Baltiyskaya 43, Vladivostok, Russia, 690041.
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Davies S, Briand V, Accrombessi M, Fievet N, Le Bot B, Durand S, Agbota G, Yovo E, Vianou B, Sossou D, Martin-Prevel Y, Massougbodji A, Cot M, Glorennec P, Bodeau-Livinec F. Pre-conception serum ferritin concentrations are associated with metal concentrations in blood during pregnancy: A cohort study in Benin. ENVIRONMENTAL RESEARCH 2021; 202:111629. [PMID: 34242675 DOI: 10.1016/j.envres.2021.111629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 06/20/2021] [Accepted: 06/29/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Iron deficiency is a common nutritional deficiency that impacts maternal health and fetal development and is also associated with increased uptake of toxic metals. Women in sub-Saharan Africa are highly exposed to both iron deficiency and metals in the environment. As research on the developmental origins of health and disease increasingly shows impacts of pre-conception maternal health on pregnancy and fetal health, these environmental exposures are of concern. OBJECTIVES This study investigated the association between iron status pre-pregnancy and blood metal concentrations in the first trimester of pregnancy with potential implications for iron supplementation. METHODS Pre-conception and first trimester blood samples taken from 262 Beninese women were tested for serum ferritin, inflammation markers, manganese (Mn), cadmium (Cd), lead (Pb), copper, zinc, selenium, mercury and arsenic. Associations between serum ferritin adjusted for inflammation and metal concentrations were analyzed using multivariate linear regression. RESULTS Women with iron deficiency before conception (13%) were more likely to remain iron deficient in the first trimester (4%) (adjusted OR = 41.2, 95%CI 6.2; 275.0) even within the context of routine iron supplementation during pregnancy. Lower pre-pregnancy serum ferritin concentrations were significantly related to higher concentrations of Mn, Cd and Pb in the first trimester. Every 1% increase in serum ferritin concentration was associated with a 0.13% decrease in Mn (adjusted β = -0.13, 95%CI -0.18; -0.07), a 0.22% decrease in Cd (adjusted β = -0.22, 95%CI -0.28; -0.15) and a 0.06% decrease in Pb concentration (adjusted β = -0.06, 95%CI -0.12; -0.006). DISCUSSION These results suggest that increasing iron stores prior to pregnancy may prevent excessive uptake of toxic concentrations of the metals Mn, Cd and Pb and argue in favour of testing the effects of iron supplementation prior to pregnancy on metal concentrations.
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Affiliation(s)
- Sarah Davies
- Département Méthodes Quantitatives en Santé Publique (METIS), Ecole des Hautes Etudes en Santé Publique (EHESP), F-35000, Rennes, France; Université de Paris, Center of Research in Epidemiology and Statistics/CRESS, INSERM, INRA, Obstetrical, Perinatal and Pediatric Epidemiology Research Team (EPOPé)-UMR1153, F-75004, Paris, France.
| | - Valérie Briand
- Institut de Recherche Pour le Développement (IRD), University of Bordeaux, Inserm, UMR 1219, 146 rue Léo-Saignat, 33076, Bordeaux, Cedex, France; Université de Paris, MERIT, IRD, 75006, Paris, France.
| | - Manfred Accrombessi
- Institut de Recherche Clinique du Benin (IRCB), 04 BP1114, Abomey-Calavi, Benin; Faculty of Infectious and Tropical Diseases, Disease Control Department, London School of Hygiene and Tropical Medicine, London, United Kingdom.
| | - Nadine Fievet
- Institut de Recherche Clinique du Benin (IRCB), 04 BP1114, Abomey-Calavi, Benin; Institut de Recherche pour le Développement (IRD), Paris Descartes Université, 75006, Paris, France.
| | - Barbara Le Bot
- Ecole des Hautes Études en Santé Publique (EHESP), Institut National de la Sante et de la Recherche Medicale (Inserm), Institut de Recherche en Santé, Environnement et Travail (Irset)-UMR_S 1085, University of Rennes, F-35000, Rennes, France.
| | - Séverine Durand
- Ecole des Hautes Études en Santé Publique (EHESP), Institut National de la Sante et de la Recherche Medicale (Inserm), Institut de Recherche en Santé, Environnement et Travail (Irset)-UMR_S 1085, University of Rennes, F-35000, Rennes, France.
| | - Gino Agbota
- Institut de Recherche Clinique du Benin (IRCB), 04 BP1114, Abomey-Calavi, Benin.
| | - Emmanuel Yovo
- Institut de Recherche Clinique du Benin (IRCB), 04 BP1114, Abomey-Calavi, Benin.
| | - Bertin Vianou
- Institut de Recherche Clinique du Benin (IRCB), 04 BP1114, Abomey-Calavi, Benin.
| | - Darius Sossou
- Institut de Recherche Clinique du Benin (IRCB), 04 BP1114, Abomey-Calavi, Benin.
| | - Yves Martin-Prevel
- Nutripass Research Unit, Institut de Recherche pour le Développement (IRD), University of Montpellier, SupAgro, Montpellier, France.
| | | | - Michel Cot
- Université de Paris, MERIT, IRD, 75006, Paris, France.
| | - Philippe Glorennec
- Ecole des Hautes Études en Santé Publique (EHESP), Institut National de la Sante et de la Recherche Medicale (Inserm), Institut de Recherche en Santé, Environnement et Travail (Irset)-UMR_S 1085, University of Rennes, F-35000, Rennes, France.
| | - Florence Bodeau-Livinec
- Département Méthodes Quantitatives en Santé Publique (METIS), Ecole des Hautes Etudes en Santé Publique (EHESP), F-35000, Rennes, France; Université de Paris, Center of Research in Epidemiology and Statistics/CRESS, INSERM, INRA, Obstetrical, Perinatal and Pediatric Epidemiology Research Team (EPOPé)-UMR1153, F-75004, Paris, France.
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Gade M, Comfort N, Re DB. Sex-specific neurotoxic effects of heavy metal pollutants: Epidemiological, experimental evidence and candidate mechanisms. ENVIRONMENTAL RESEARCH 2021; 201:111558. [PMID: 34224706 PMCID: PMC8478794 DOI: 10.1016/j.envres.2021.111558] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 05/14/2021] [Accepted: 06/17/2021] [Indexed: 05/19/2023]
Abstract
The heavy metals lead (Pb), mercury (Hg), and cadmium (Cd) are ubiquitous environmental pollutants and are known to exert severe adverse impacts on the nervous system even at low concentrations. In contrast, the heavy metal manganese (Mn) is first and foremost an essential nutrient, but it becomes neurotoxic at high levels. Neurotoxic metals also include the less prevalent metalloid arsenic (As) which is found in excessive concentrations in drinking water and food sources in many regions of the world. Males and females often differ in how they respond to environmental exposures and adverse effects on their nervous systems are no exception. Here, we review the different types of sex-specific neurotoxic effects, such as cognitive and motor impairments, that have been attributed to Pb, Hg, Mn, Cd, and As exposure throughout the life course in epidemiological as well as in experimental toxicological studies. We also discuss differential vulnerability to these metals such as distinctions in behaviors and occupations across the sexes. Finally, we explore the different mechanisms hypothesized to account for sex-based differential susceptibility including hormonal, genetic, metabolic, anatomical, neurochemical, and epigenetic perturbations. An understanding of the sex-specific effects of environmental heavy metal neurotoxicity can aid in the development of more efficient systematic approaches in risk assessment and better exposure mitigation strategies with regard to sex-linked susceptibilities and vulnerabilities.
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Affiliation(s)
- Meethila Gade
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Nicole Comfort
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Diane B Re
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA; NIEHS Center of Northern Manhattan, Columbia University, New York, NY, USA; Motor Neuron Center for Biology and Disease, Columbia University, New York, NY, USA.
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Samuel TA, Awobajo FO, Akinsanya TH, Oyediran HS, Egege IE, Egede CB, Timothy BO. Modulatory role of genistein on placenta and maternal bone minerals composition: further insight into its influence on pregnancy and foetal development. Biol Futur 2021; 71:223-230. [PMID: 34554508 DOI: 10.1007/s42977-020-00017-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 05/24/2020] [Indexed: 01/04/2023]
Abstract
Pregnancy is a crucial period with an increased need to supply necessary minerals for both the mother and the developing foetus and with a tendency of altering the maternal bone mineral density when there is no balance between demand and supply of these minerals. This study evaluated the influence of genistein on the maternal bone and placenta mineral composition. Pregnant rats were grouped into control, 2 mg/kg and 4 mg/kg genistein groups, dosed accordingly till sacrificed at different gestation days (GD). Body and placenta weights, right femur bone and placenta mineral composition were analysed. A significant decrease in body weight and percentage relative right femur bone weight at GD-20 was recorded in the 2-mg group with the reverse occurring in the 4-mg genistein group. The right femur bone Ca2+ and Zn2+ was reduced towards GD-20 in both 2-mg and 4-mg genistein groups. Genistein had no influence on placenta selenium and cadmium level, but significantly decreased zinc and lead level concentration as the gestation progressed towards GD-20. Copper level was increased at GD-16 at the doses used. Genistein modulated maternal bone mineral composition and placenta capability in retaining some heavy metals at various stages of pregnancy.
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Affiliation(s)
| | | | | | | | - Ikechukwu Eric Egege
- Department of Biochemistry, College of Medicine, University of Lagos, Lagos, Nigeria
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63
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Exposome and foetoplacental vascular dysfunction in gestational diabetes mellitus. Mol Aspects Med 2021; 87:101019. [PMID: 34483008 DOI: 10.1016/j.mam.2021.101019] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 08/26/2021] [Indexed: 12/15/2022]
Abstract
A balanced communication between the mother, placenta and foetus is crucial to reach a successful pregnancy. Several windows of exposure to environmental toxins are present during pregnancy. When the women metabolic status is affected by a disease or environmental toxin, the foetus is impacted and may result in altered development and growth. Gestational diabetes mellitus (GDM) is a disease of pregnancy characterised by abnormal glucose metabolism affecting the mother and foetus. This disease of pregnancy associates with postnatal consequences for the child and the mother. The whole endogenous and exogenous environmental factors is defined as the exposome. Endogenous insults conform to the endo-exposome, and disruptors contained in the immediate environment are the ecto-exposome. Some components of the endo-exposome, such as Selenium, vitamins D and B12, adenosine, and a high-fat diet, and ecto-exposome, such as the heavy metals Arsenic, Mercury, Lead and Copper, and per- and polyfluoroakyl substances, result in adverse pregnancies, including an elevated risk of GDM or gestational diabesity. The impact of the exposome on the human placenta's vascular physiology and function in GDM and gestational diabesity is reviewed.
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Hudson KM, Shiver E, Yu J, Mehta S, Jima DD, Kane MA, Patisaul HB, Cowley M. Transcriptomic, proteomic, and metabolomic analyses identify candidate pathways linking maternal cadmium exposure to altered neurodevelopment and behavior. Sci Rep 2021; 11:16302. [PMID: 34381081 PMCID: PMC8357970 DOI: 10.1038/s41598-021-95630-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 07/28/2021] [Indexed: 02/07/2023] Open
Abstract
Cadmium (Cd) is a ubiquitous toxic heavy metal of major public concern. Despite inefficient placental transfer, maternal Cd exposure impairs fetal growth and development. Increasing evidence from animal models and humans suggests maternal Cd exposure negatively impacts neurodevelopment; however, the underlying molecular mechanisms are unclear. To address this, we utilized multiple -omics approaches in a mouse model of maternal Cd exposure to identify pathways altered in the developing brain. Offspring maternally exposed to Cd presented with enlarged brains proportional to body weights at birth and altered behavior at adulthood. RNA-seq in newborn brains identified exposure-associated increases in Hox gene and myelin marker expression and suggested perturbed retinoic acid (RA) signaling. Proteomic analysis showed altered levels of proteins involved in cellular energy pathways, hypoxic response, and RA signaling. Consistent with transcriptomic and proteomic analyses, we identified increased levels of retinoids in maternally-exposed newborn brains. Metabolomic analyses identified metabolites with significantly altered abundance, supportive of changes to cellular energy pathways and hypoxia. Finally, maternal Cd exposure reduced mitochondrial DNA levels in newborn brains. The identification of multiple pathways perturbed in the developing brain provides a basis for future studies determining the mechanistic links between maternal Cd exposure and altered neurodevelopment and behavior.
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Affiliation(s)
- Kathleen M Hudson
- Department of Biological Sciences, North Carolina State University, Raleigh, NC, 27695, USA
- Center for Human Health and the Environment, North Carolina State University, Raleigh, NC, 27695, USA
| | - Emily Shiver
- Department of Biological Sciences, North Carolina State University, Raleigh, NC, 27695, USA
- Center for Human Health and the Environment, North Carolina State University, Raleigh, NC, 27695, USA
| | - Jianshi Yu
- School of Pharmacy Mass Spectrometry Center, Department of Pharmaceutical Sciences, University of Maryland, Baltimore, MD, 21201, USA
| | - Sanya Mehta
- Department of Biological Sciences, North Carolina State University, Raleigh, NC, 27695, USA
- Center for Human Health and the Environment, North Carolina State University, Raleigh, NC, 27695, USA
| | - Dereje D Jima
- Center for Human Health and the Environment, North Carolina State University, Raleigh, NC, 27695, USA
- Bioinformatics Research Center, North Carolina State University, Raleigh, NC, 27695, USA
| | - Maureen A Kane
- School of Pharmacy Mass Spectrometry Center, Department of Pharmaceutical Sciences, University of Maryland, Baltimore, MD, 21201, USA
| | - Heather B Patisaul
- Department of Biological Sciences, North Carolina State University, Raleigh, NC, 27695, USA
- Center for Human Health and the Environment, North Carolina State University, Raleigh, NC, 27695, USA
| | - Michael Cowley
- Department of Biological Sciences, North Carolina State University, Raleigh, NC, 27695, USA.
- Center for Human Health and the Environment, North Carolina State University, Raleigh, NC, 27695, USA.
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65
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Elemental dysregulation in psychotic spectrum disorders: A review and research synthesis. Schizophr Res 2021; 233:64-71. [PMID: 34242950 DOI: 10.1016/j.schres.2021.06.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 06/16/2021] [Accepted: 06/19/2021] [Indexed: 12/12/2022]
Abstract
Accumulating evidence from observational studies, genetic research, and animal models suggests a relationship between toxic and nutritive elements and psychotic spectrum disorders (PSD). This review systematically evaluates the current research evidence for two hypotheses: 1) that exposures to abnormal levels of toxic and nutritive elements early in life contributes to the subsequent development of PSD, and 2) that an imbalance of element levels is linked to psychotic illness and clinical severity. We focused on the extant literature on five elements, lead (Pb), copper (Cu), magnesium (Mg), manganese (Mn), and zinc (Zn), because of their previously documented associations with psychiatric problems and the availability of pertinent literature. The review identified 38 studies of which 11 measured Pb, 27 measured Cu, 16 measured Mg, 15 measured Mn, and 25 measured Zn concentrations in PSD patients and controls. A majority of research has been conducted on nutritive element imbalance, and findings are largely mixed. While it is biologically plausible that element dysregulation is an important modifiable risk factor for PSD, more research into exposure in early life is needed to better characterize this relationship.
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Gundacker C, Graf-Rohrmeister K, Gencik M, Hengstschläger M, Holoman K, Rosa P, Kroismayr R, Offenthaler I, Plichta V, Reischer T, Teufl I, Raffesberg W, Scharf S, Köhler-Vallant B, Delissen Z, Weiß S, Uhl M. Gene Variants Determine Placental Transfer of Perfluoroalkyl Substances (PFAS), Mercury (Hg) and Lead (Pb), and Birth Outcome: Findings From the UmMuKi Bratislava-Vienna Study. Front Genet 2021; 12:664946. [PMID: 34220941 PMCID: PMC8242356 DOI: 10.3389/fgene.2021.664946] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Accepted: 05/17/2021] [Indexed: 12/14/2022] Open
Abstract
Prenatal exposure to perfluoroalkyl substances (PFAS), bisphenol A (BPA), lead (Pb), total mercury (THg), and methylmercury (MeHg) can affect fetal development. Factors influencing placental transfer rate of these toxins are poorly investigated. Whether prenatal exposure to pollutants has an effect on birth weight is incompletely understood. We therefore aimed (1) to determine placental transfer rates of PFAS, BPA, Pb, THg, and MeHg, (2) to analyze relationships between fetal exposure and birth outcome and (3) to analyze gene variants as mediators of placental transfer rates and birth outcome. Two hundred healthy pregnant women and their newborns participated in the study. BPA, 16 PFAS, THg, MeHg, and Pb were determined using HPLCMS/MS (BPA, PFAS), HPLC-CV-ICPMS (MeHg), CV-AFS (THg), and GF-AAS (Pb). Questionnaires and medical records were used to survey exposure sources and birth outcome. 20 single nucleotide polymorphisms and two deletion polymorphisms were determined by real-time PCR from both maternal and newborn blood. Genotype-phenotype associations were analyzed by categorical regression and logistic regression analysis. Specific gene variants were associated with altered placental transfer of PFAS (ALAD Lys59Asn, ABCG2 Gln141Lys), THg (UGT Tyr85Asp, GSTT1del, ABCC1 rs246221) and Pb (GSTP1 Ala114Val). A certain combination of three gene polymorphisms (ABCC1 rs246221, GCLM rs41303970, HFE His63Asp) was over-represented in newborns small for gestational age. 36% of Austrian and 75% of Slovakian mothers had levels exceeding the HBM guidance value I (2 μg/L) of the German HBM Commission for PFOA. 13% of newborns and 39% of women had Ery-Pb levels above 24 μg/kg, an approximation for the BMDL01 of 12 μg/L set by the European Food Safety Authority (EFSA). Our findings point to the need to minimize perinatal exposures to protect fetal health, especially those genetically predisposed to increased transplacental exposure.
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Affiliation(s)
- Claudia Gundacker
- Institute of Medical Genetics, Medical University of Vienna, Vienna, Austria
| | | | | | | | - Karol Holoman
- University Hospital Bratislava-Ružinov, Bratislava, Slovakia
| | - Petra Rosa
- University Hospital Bratislava-Ružinov, Bratislava, Slovakia
| | - Renate Kroismayr
- Department of Biochemical Engineering, University of Applied Sciences Technikum Wien, Vienna, Austria.,Environment Agency Austria, Vienna, Austria
| | | | - Veronika Plichta
- Institute of Medical Genetics, Medical University of Vienna, Vienna, Austria.,Austrian Agency for Food and Health Safety, Vienna, Austria
| | - Theresa Reischer
- Institute of Medical Genetics, Medical University of Vienna, Vienna, Austria
| | - Isabella Teufl
- Institute of Medical Genetics, Medical University of Vienna, Vienna, Austria
| | | | | | | | - Zoja Delissen
- Institute of Medical Genetics, Medical University of Vienna, Vienna, Austria.,Medgene, Bratislava, Slovakia
| | | | - Maria Uhl
- Environment Agency Austria, Vienna, Austria
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Goto Y, Mandai M, Nakayama T, Yamazaki S, Nakayama SF, Isobe T, Sato T, Nitta H. Association of prenatal maternal blood lead levels with birth outcomes in the Japan Environment and Children's Study (JECS): a nationwide birth cohort study. Int J Epidemiol 2021; 50:156-164. [PMID: 33141187 DOI: 10.1093/ije/dyaa162] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 07/30/2020] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Despite dramatic declines in prenatal maternal blood lead levels (BLLs) in most developed countries, little is known about the effects of extremely low-level (<1.0 µg/dL) lead exposure on fetal growth. METHODS We measured maternal BLL during the second or third trimester of pregnancy and assessed birth outcomes, including birthweight, preterm birth (<37 gestational weeks) risk, small for gestational age births (SGA; birthweight <10th percentile) and low birthweight (LBW; <2500 g). The association between birthweight and maternal BLL was estimated using linear and quadratic spline models. Multivariable logistic models were used to examine the risk of binary responses. RESULTS From 103 099 pregnant women, 20 000 blood samples were randomly selected for analysis. The maternal BLL range was 0.16-7.4 µg/dL, and the median was 0.63 µg/dL. After adjusting for covariates, the linear model showed that each 0.1 μg/dL increase in maternal BLL was associated with a 5.4 g decrease in mean birthweight [95% confidence interval (CI), 3.4 to 7.5 g]. The risk of SGA [adjusted odds ratio (aOR), 1.03; 95% CI, 1.02 to 1.05) and LBW (aOR, 1.03; 95% CI, 1.02 to 1.05) increased, whereas the risk of preterm delivery did not (aOR, 0.99; 95% CI, 0.97 to 1.02). CONCLUSIONS Even at a maternal BLL below 1.0 µg/dL, prenatal lead exposure was associated with decreased birthweight and increased risk of SGA and LBW, but not preterm delivery. The adverse effect estimates of prenatal lead exposure on birth outcomes were quantitatively small and clinically limited at this low level.
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Affiliation(s)
| | - Marie Mandai
- Center for Genomic Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Takeo Nakayama
- Department of Health Informatics, Kyoto University School of Public Health, Kyoto, Japan
| | - Shin Yamazaki
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Tsukuba, Japan
| | - Shoji F Nakayama
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Tsukuba, Japan
| | - Tomohiko Isobe
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Tsukuba, Japan
| | - Tosiya Sato
- Department of Biostatistics, Kyoto University School of Public Health, Kyoto, Japan
| | - Hiroshi Nitta
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Tsukuba, Japan
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68
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Zhang M, Liu T, Wang G, Buckley JP, Guallar E, Hong X, Wang MC, Wills-Karp M, Wang X, Mueller NT. In Utero Exposure to Heavy Metals and Trace Elements and Childhood Blood Pressure in a U.S. Urban, Low-Income, Minority Birth Cohort. ENVIRONMENTAL HEALTH PERSPECTIVES 2021; 129:67005. [PMID: 34160246 PMCID: PMC8221032 DOI: 10.1289/ehp8325] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
BACKGROUND In utero exposure to heavy metals lead (Pb), mercury (Hg), and cadmium (Cd) may be associated with higher childhood blood pressure (BP), whereas trace elements selenium (Se) and manganese (Mn) may have protective antioxidant effects that modify metal-BP associations. OBJECTIVES We examined the individual and joint effects of in utero exposure to Pb, Hg, Cd, Se, and Mn on childhood BP. METHODS We used data from the Boston Birth Cohort (enrolled 2002-2013). We measured heavy metals and trace elements in maternal red blood cells collected 24-72 h after delivery. We calculated child BP percentile per the 2017 American Academy of Pediatrics Clinical Practice Guideline. We used linear regression models to estimate the association of each metal, and Bayesian kernel machine regression (BKMR) to examine metal coexposures, with child BP between 3 to 15 years of age. RESULTS Our analytic sample comprised 1,194 mother-infant pairs (61% non-Hispanic Black, 20% Hispanic). Hg and Pb were not associated with child systolic BP (SBP). Se and Mn were inversely associated with child SBP percentiles, which, on average, were 6.23 points lower with a doubling of Se (95% CI: -11.51, -0.96) and 2.62 points lower with a doubling of Mn (95% CI: -5.20, -0.04). BKMR models showed similar results. Although Cd was not associated with child SBP overall, the inverse association between Mn and child SBP was stronger at higher levels of Cd (p-interaction=0.04). Consistent with this finding, in utero exposure to cigarette smoke modified the Mn-child SBP association. Among children whose mothers smoked during pregnancy, a doubling of Mn was associated with a 10.09-point reduction in SBP percentile (95% CI: -18.03, -2.15), compared with a 1.49-point reduction (95% CI: -4.21, 1.24) in children whose mothers did not smoke during pregnancy (p-interaction=0.08). CONCLUSION Se and Mn concentrations in maternal red blood cells collected 24-72 h after delivery were associated with lower child SBP at 3 to 15 years of age. There was an interaction between Mn and Cd on child SBP, whereby the protective association of Mn on child SBP was stronger among mothers who had higher Cd. The association of Mn and child SBP was also modified by maternal cigarette smoking-a source of Cd-during pregnancy. Optimizing in utero Se levels, as well as Mn levels in women who had high Cd or smoked during pregnancy, may protect offspring from developing high BP during childhood. https://doi.org/10.1289/EHP8325.
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Affiliation(s)
- Mingyu Zhang
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
- Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University, Baltimore, Maryland, USA
| | - Tiange Liu
- Department of Health, Behavior and Society, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Guoying Wang
- Center on the Early Life Origins of Disease, Department of Population, Family and Reproductive Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Jessie P. Buckley
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Eliseo Guallar
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
- Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University, Baltimore, Maryland, USA
| | - Xiumei Hong
- Center on the Early Life Origins of Disease, Department of Population, Family and Reproductive Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Mei-Cheng Wang
- Department of Biostatistics, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Marsha Wills-Karp
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Xiaobin Wang
- Center on the Early Life Origins of Disease, Department of Population, Family and Reproductive Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
- Department of Pediatrics, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
| | - Noel T. Mueller
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
- Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University, Baltimore, Maryland, USA
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Sullivan GL, Delgado-Gallardo J, Watson TM, Sarp S. An investigation into the leaching of micro and nano particles and chemical pollutants from disposable face masks - linked to the COVID-19 pandemic. WATER RESEARCH 2021; 196:117033. [PMID: 33751973 PMCID: PMC9752785 DOI: 10.1016/j.watres.2021.117033] [Citation(s) in RCA: 101] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/05/2021] [Accepted: 03/08/2021] [Indexed: 05/19/2023]
Abstract
The production of disposable plastic face masks (DPFs) in China alone has reached to approximately 200 million a day, in a global effort to tackle the spread of the new SARS-CoV-2 virus. However, improper and unregulated disposals of these DPFs has been and will continue to intensify the plastic pollution problem we are already facing. This study focuses on the emission of pollutants from 7 DPF brands that were submerged in water to simulate environmental conditions if these DPFs were littered. The DPF leachates were filtered by inorganic membranes, and both particle-deposited organic membranes and the filtrates were characterized using techniques such as FTIR, SEM-EDX, Light Microscopy, ICP-MS and LC-MS. Micro and nano scale polymeric fibres, particles, siliceous fragments and leachable inorganic and organic chemicals were observed from all of the tested DPFs. Traces of concerning heavy metals (i.e. lead up to 6.79 µg/L) were detected in association with silicon containing fragments. ICP-MS also confirmed the presence of other leachable metals like cadmium (up to 1.92 µg/L), antimony (up to 393 µg/L) and copper (up to 4.17 µg/L). LC-MS analysis identified polar leachable organic species related to plastic additives and contaminants; polyamide-66 monomer and oligomers (nylon-66 synthesis), surfactant molecules, dye-like molecules and polyethylene glycol were all tentatively identified in the leachate. The toxicity of some of the chemicals found and the postulated risks of the rest of the present particles and molecules, raises the question of whether DPFs are safe to be used on a daily basis and what consequences are to be expected after their disposal into the environment.
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Affiliation(s)
- G L Sullivan
- SPECIFIC, College of Engineering, Swansea University, SA2 8PP, UK
| | | | - T M Watson
- SPECIFIC, College of Engineering, Swansea University, SA2 8PP, UK
| | - S Sarp
- SPEC, College of Engineering, Swansea University, SA2 8PP, UK.
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70
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Cowell W, Colicino E, Levin-Schwartz Y, Enlow MB, Amarasiriwardena C, Andra SS, Gennings C, Wright RO, Wright RJ. Prenatal metal mixtures and sex-specific infant negative affectivity. Environ Epidemiol 2021; 5:e147. [PMID: 33870019 PMCID: PMC8043734 DOI: 10.1097/ee9.0000000000000147] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 03/04/2021] [Indexed: 11/27/2022] Open
Abstract
Prenatal exposure to metals has been associated with a range of adverse neurocognitive outcomes; however, associations with early behavioral development are less well understood. We examined joint exposure to multiple co-occurring metals in relation to infant negative affect, a stable temperamental trait linked to psychopathology among children and adults. METHODS Analyses included 308 mother-infant pairs enrolled in the PRISM pregnancy cohort. We measured As, Ba, Cd, Cs, Cr, Pb, and Sb in urine, collected on average during late pregnancy, by ICP-MS. At age 6 months, we assessed negative affect using the Infant Behavior Questionnaire-Revised. We used Weighted Quantile Sum (WQS) regression with repeated holdout validation to estimate the joint association between the metals and global negative affectivity, as well as four subdomains (Fear, Sadness, Distress to Limitations, and Falling Reactivity). We also tested for a sex interaction with estimated stratified weights. RESULTS In adjusted models, urinary metals were associated with higher scores on the Fear scale (βWQS = 0.20, 95% confidence interval [CI]: 0.09, 0.30), which captures behavioral inhibition, characterized by startle or distress to sudden changes in the environment and inhibited approach to novelty. We observed a significant sex interaction (95% CI for the cross-product term: -0.19, -0.01), and stratified weights showed girls (61.6%) contributed substantially more to the mixture effect compared with boys (38.4%). Overall, Ba contributed the greatest mixture weight (22.5%), followed by Cs (14.9%) and As (14.6%). CONCLUSIONS Prenatal exposure to metals was associated with increased infant scores on the temperamental domain of fear, with girls showing particular sensitivity.Key words: Prenatal; Metals; Mixtures; Temperament; Infancy; Negative affect.
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Affiliation(s)
- Whitney Cowell
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Elena Colicino
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Yuri Levin-Schwartz
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Michelle Bosquet Enlow
- Department of Psychiatry, Boston Children’s Hospital, Boston, MA
- Department of Psychiatry, Harvard Medical School, Boston, MA
| | - Chitra Amarasiriwardena
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Syam S. Andra
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Chris Gennings
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY
- Institute for Exposomic Research, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Robert O. Wright
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY
- Institute for Exposomic Research, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Rosalind J. Wright
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY
- Institute for Exposomic Research, Icahn School of Medicine at Mount Sinai, New York, NY
- Kravis Children’s Hospital, Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY
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Mathiesen L, Buerki-Thurnherr T, Pastuschek J, Aengenheister L, Knudsen LE. Fetal exposure to environmental chemicals; insights from placental perfusion studies. Placenta 2021; 106:58-66. [DOI: 10.1016/j.placenta.2021.01.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 10/19/2020] [Accepted: 01/22/2021] [Indexed: 12/27/2022]
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Alengebawy A, Abdelkhalek ST, Qureshi SR, Wang MQ. Heavy Metals and Pesticides Toxicity in Agricultural Soil and Plants: Ecological Risks and Human Health Implications. TOXICS 2021; 9:42. [PMID: 33668829 PMCID: PMC7996329 DOI: 10.3390/toxics9030042] [Citation(s) in RCA: 418] [Impact Index Per Article: 139.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 02/12/2021] [Accepted: 02/17/2021] [Indexed: 12/19/2022]
Abstract
Environmental problems have always received immense attention from scientists. Toxicants pollution is a critical environmental concern that has posed serious threats to human health and agricultural production. Heavy metals and pesticides are top of the list of environmental toxicants endangering nature. This review focuses on the toxic effect of heavy metals (cadmium (Cd), lead (Pb), copper (Cu), and zinc (Zn)) and pesticides (insecticides, herbicides, and fungicides) adversely influencing the agricultural ecosystem (plant and soil) and human health. Furthermore, heavy metals accumulation and pesticide residues in soils and plants have been discussed in detail. In addition, the characteristics of contaminated soil and plant physiological parameters have been reviewed. Moreover, human diseases caused by exposure to heavy metals and pesticides were also reported. The bioaccumulation, mechanism of action, and transmission pathways of both heavy metals and pesticides are emphasized. In addition, the bioavailability in soil and plant uptake of these contaminants has also been considered. Meanwhile, the synergistic and antagonistic interactions between heavy metals and pesticides and their combined toxic effects have been discussed. Previous relevant studies are included to cover all aspects of this review. The information in this review provides deep insights into the understanding of environmental toxicants and their hazardous effects.
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Affiliation(s)
- Ahmed Alengebawy
- College of Engineering, Huazhong Agricultural University, Wuhan 430070, China;
| | - Sara Taha Abdelkhalek
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (S.T.A.); (S.R.Q.)
- Department of Entomology, Faculty of Science, Ain Shams University, Cairo 11566, Egypt
| | - Sundas Rana Qureshi
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (S.T.A.); (S.R.Q.)
| | - Man-Qun Wang
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (S.T.A.); (S.R.Q.)
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Granitzer S, Widhalm R, Forsthuber M, Ellinger I, Desoye G, Hengstschläger M, Zeisler H, Salzer H, Gundacker C. Amino Acid Transporter LAT1 (SLC7A5) Mediates MeHg-Induced Oxidative Stress Defense in the Human Placental Cell Line HTR-8/SVneo. Int J Mol Sci 2021; 22:ijms22041707. [PMID: 33567754 PMCID: PMC7915079 DOI: 10.3390/ijms22041707] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 02/02/2021] [Accepted: 02/05/2021] [Indexed: 12/25/2022] Open
Abstract
The placental barrier can protect the fetus from contact with harmful substances. The potent neurotoxin methylmercury (MeHg), however, is very efficiently transported across the placenta. Our previous data suggested that L-type amino acid transporter (LAT)1 is involved in placental MeHg uptake, accepting MeHg-L-cysteine conjugates as substrate due to structural similarity to methionine. The aim of the present study was to investigate the antioxidant defense of placental cells to MeHg exposure and the role of LAT1 in this response. When trophoblast-derived HTR-8/SVneo cells were LAT1 depleted by siRNA-mediated knockdown, they accumulated less MeHg. However, they were more susceptible to MeHg-induced toxicity. This was evidenced in decreased cell viability at a usually noncytotoxic concentration of 0.03 µM MeHg (~6 µg/L). Treatment with ≥0.3 µM MeHg increased cytotoxicity, apoptosis rate, and oxidative stress of HTR-8/SVneo cells. These effects were enhanced under LAT1 knockdown. Reduced cell number was seen when MeHg-exposed cells were cultured in medium low in cysteine, a constituent of the tripeptide glutathione (GSH). Because LAT1-deficient HTR-8/SVneo cells have lower GSH levels than control cells (independent of MeHg treatment), we conclude that LAT1 is essential for de novo synthesis of GSH, required to counteract oxidative stress. Genetic predisposition to decreased LAT1 function combined with MeHg exposure could increase the risk of placental damage.
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Affiliation(s)
- Sebastian Granitzer
- Karl-Landsteiner Private University for Health Sciences, A-3500 Krems, Austria; (S.G.); (R.W.)
- Institute of Medical Genetics, Medical University of Vienna, A-1090 Vienna, Austria; (M.F.); (M.H.)
| | - Raimund Widhalm
- Karl-Landsteiner Private University for Health Sciences, A-3500 Krems, Austria; (S.G.); (R.W.)
- Institute of Medical Genetics, Medical University of Vienna, A-1090 Vienna, Austria; (M.F.); (M.H.)
| | - Martin Forsthuber
- Institute of Medical Genetics, Medical University of Vienna, A-1090 Vienna, Austria; (M.F.); (M.H.)
| | - Isabella Ellinger
- Department of Pathophysiology and Allergy Research, Medical University of Vienna, A-1090 Vienna, Austria;
| | - Gernot Desoye
- Department of Obstetrics and Gynecology, Medical University of Graz, A-8036 Graz, Austria;
| | - Markus Hengstschläger
- Institute of Medical Genetics, Medical University of Vienna, A-1090 Vienna, Austria; (M.F.); (M.H.)
| | - Harald Zeisler
- Department of Obstetrics and Gynecology, Medical University Vienna, A-1090 Vienna, Austria;
| | - Hans Salzer
- Clinical Department of Pediatrics and Adolescent Medicine, University Hospital Tulln, A-3430 Tulln, Austria;
| | - Claudia Gundacker
- Institute of Medical Genetics, Medical University of Vienna, A-1090 Vienna, Austria; (M.F.); (M.H.)
- Correspondence: ; Tel.: +43-1-40160-56503
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Chandravanshi L, Shiv K, Kumar S. Developmental toxicity of cadmium in infants and children: a review. Environ Anal Health Toxicol 2021; 36:e2021003-0. [PMID: 33730790 PMCID: PMC8207007 DOI: 10.5620/eaht.2021003] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 01/09/2021] [Indexed: 02/06/2023] Open
Abstract
Several millions of people are exposed to cadmium worldwide due to natural and anthropogenic activities that led to their widespread distribution in the environment and have shown potential adverse effects on the kidneys, liver, heart and nervous system. Recently human and animal-based studies have been shown that In utero and early life exposure to cadmium can have serious health issues that are related to the risk of developmental disabilities and other outcomes in adulthood. Since, cadmium crosses the placental barrier and reaches easily to the fetus, even moderate or high-level exposure of this metal during pregnancy could be of serious health consequences which might be reflected either in the children’s early or later stages of life. Mortality from various diseases including cancer, cardiovascular, respiratory, kidney and neurological problems, correlation with In utero or early life exposure to cadmium has been found in epidemiological studies. Animal studies with strong evidence of various diseases mostly support for the human studies, as well as suggested a myriad mechanism by which cadmium can interfere with human health and development. More studies are needed to establish the mechanism of cadmium-induced toxicity with environmentally relevant doses in childhood and later life. In this review, we provide a comprehensive examination of the literature addressing potential long- term health issues with In utero and early life exposure to cadmium, as well as correlating with human and animal exposure studies.
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Affiliation(s)
- Lalit Chandravanshi
- Department of Forensic Science, College and Traffic Management- Institute of Road and Traffic Education, Faridabad - Haryana - 121010, India
| | - Kunal Shiv
- Division of Forensic Science, School of Basic & Applied Sciences, Galgotias University Greater Noida - 201306, India
| | - Sudhir Kumar
- Forensic Science laboratory, Modinagar, Ghaziabad - 201204, India
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Shih YH, Chen HY, Christensen K, Handler A, Turyk ME, Argos M. Prenatal exposure to multiple metals and birth outcomes: An observational study within the National Children's Study cohort. ENVIRONMENT INTERNATIONAL 2021; 147:106373. [PMID: 33422966 PMCID: PMC7855942 DOI: 10.1016/j.envint.2020.106373] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 12/22/2020] [Accepted: 12/27/2020] [Indexed: 05/05/2023]
Abstract
BACKGROUND Prenatal exposure to metals may play an important role in fetal growth. However, the epidemiologic evidence for certain metals is sparse, and most of the existing research has focused on evaluating single metals in highly exposed target populations. OBJECTIVES We evaluated associations of cadmium, lead, manganese, selenium, and total mercury exposures during pregnancy with fetal growth using data from mother-infant pairs participating in the National Children's Study. METHODS Prenatal metal exposures were measured using maternal blood collected from 6 to 32 weeks of gestation. Birth outcomes, including gestational age, birthweight, birth length, head circumference, and ponderal index, were ascertained through physical measurement at birth or abstraction from medical records. Regression coefficients and their 95% confidence intervals were estimated from multivariable linear regression models in the overall study population as well as among male and female infants. We further evaluated pairwise metal-metal interactions. RESULTS Sex-specific associations were observed for lead, with inverse associations for birthweight, birth length, head circumference, and gestational age observed only among female infants. Sex-specific associations were also observed for selenium, with a positive association for birthweight observed among male infants; selenium was also positively associated with ponderal index and inversely associated with birth length among female infants. Overall, total mercury was inversely associated with birthweight and ponderal index, and the association with birthweight was stronger among female infants. No significant associations were observed with cadmium and manganese. In the metal-metal interaction analyses, we found evidence of a synergistic interaction between lead and total mercury and antagonistic interaction between selenium and total mercury with selected birth outcomes. CONCLUSIONS Our findings suggest that prenatal exposure to metals may be related to birth outcomes, and infant sex may modify these associations.
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Affiliation(s)
- Yu-Hsuan Shih
- Division of Epidemiology and Biostatistics, School of Public Health, University of Illinois Chicago, Chicago, IL 60612, United States
| | - Hua Yun Chen
- Division of Epidemiology and Biostatistics, School of Public Health, University of Illinois Chicago, Chicago, IL 60612, United States
| | | | - Arden Handler
- Division of Community Health Sciences, School of Public Health, University of Illinois Chicago, Chicago, IL 60612, United States
| | - Mary E Turyk
- Division of Epidemiology and Biostatistics, School of Public Health, University of Illinois Chicago, Chicago, IL 60612, United States
| | - Maria Argos
- Division of Epidemiology and Biostatistics, School of Public Health, University of Illinois Chicago, Chicago, IL 60612, United States.
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Li M, Yang T, Gao L, Xu H. An inadvertent issue of human retina exposure to endocrine disrupting chemicals: A safety assessment. CHEMOSPHERE 2021; 264:128484. [PMID: 33022499 DOI: 10.1016/j.chemosphere.2020.128484] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 09/07/2020] [Accepted: 09/27/2020] [Indexed: 06/11/2023]
Abstract
Endocrine disrupting chemicals (EDCs) are a group of chemical compounds that present a considerable public health problem due to their pervasiveness and associations with chronic diseases. EDCs can interrupt the endocrine system and interfere with hormone homeostasis, leading to abnormalities in human physiology. Much attention has been focused on the adverse effects EDCs have on the reproductive system, neurogenesis, neuroendocrine system, and thyroid dysfunction. The eye is usually directly exposed to the surrounding environment; however, the influences of EDCs on the eye have received comparatively little attention. Ocular diseases, such as ocular surface diseases and retinal diseases, have been implicated in hormone deficiency or excess. Epidemiologic studies have shown that EDC exposure not only causes ocular surface disorders, such as dry eye, but also associates with visual deficits and retinopathy. EDCs can pass through the human blood-retinal barrier and enter the neural retina, and can then accumulate in the retina. The retina is an embryologic extension of the central nervous system, and is extremely sensitive and vulnerable to EDCs that could be passed across the placenta during critical periods of retinal development. Subtle alterations in the retinal development process usually result in profound immediate, long-term, and delayed effects late in life. This review, based on extensive literature survey, briefly summarizes the current knowledge about the impact of representative manufactured EDCs on retinal toxicity, including retinal structure alterations and dysfunction. We also highlight the potential mechanism of action of EDCs on the retina, and the predictive retinal models of EDC exposure.
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Affiliation(s)
- Minghui Li
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, China; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, China
| | - Tian Yang
- Department of Cold Environmental Medicine, College of High Altitude Military Medicine, Third Military Medical University (Army Medical University), Chongqing, China
| | - Lixiong Gao
- Department of Ophthalmology, Third Medical Center of PLA General Hospital, Beijing, China
| | - Haiwei Xu
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, China; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, China.
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The Developing Cerebellum as a Target for Toxic Substances: Protective Role of Antioxidants. THE CEREBELLUM 2021; 20:614-630. [PMID: 33474620 DOI: 10.1007/s12311-021-01231-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/05/2021] [Indexed: 10/22/2022]
Abstract
Cerebellar development begins during the late embryological period and continues to undergo organizational changes long after birth. The cerebellum is particularly susceptible to developmental abnormalities on exposure to oxidants and free radicals, thus leading to oxidative stress. Oxidative stress occurs when there is an imbalance between reactive oxygen species generation and antioxidant defences which may disrupt signalling pathways, leading to cerebellar anomalies and dysfunction. In this regard, this review assesses current research underlining the importance of the cerebellum, provides an update on substances affecting cerebellar development and highlights some promising antioxidants that may play a role in attenuating toxicity in the developing cerebellum. To accomplish this, the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) system was employed and key scientific databases such as Science Direct, PubMed, Scopus, Web of Science and Google Scholar were searched to explore and collect information on the cerebellum and the role of antioxidants during its development. Originally, 109 articles were obtained but 22 articles which met the inclusion criteria were selected for the review. These findings provide an updated compilation of antioxidants capable of attenuating oxidative damage in the developing cerebellum, thus allowing future interdisciplinary studies in the form of clinical applications for screening and possible development of novel therapeutic agents from the identified products.
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78
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Jung CR, Nakayama SF, Isobe T, Iwai-Shimada M, Kobayashi Y, Nishihama Y, Michikawa T, Sekiyama M, Taniguchi Y, Nitta H, Yamazaki S. Exposure to heavy metals modifies optimal gestational weight gain: A large nationally representative cohort of the Japan Environment and Children's Study. ENVIRONMENT INTERNATIONAL 2021; 146:106276. [PMID: 33264735 DOI: 10.1016/j.envint.2020.106276] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 11/05/2020] [Accepted: 11/07/2020] [Indexed: 06/12/2023]
Abstract
Clinical guidelines including those set by the US Institute of Medicine, have based optimal gestational weight gain (GWG) on maternal pre-pregnancy body mass index (BMI), but have not considered the role of environmental toxicants such as heavy metals that can disrupt these processes. This study designed to determine optimal GWG ranges in women grouped according to BMI, and to assess whether blood concentrations of heavy metals alter the relationships between GWG and outcomes. A total of 103,060 participants in the Japan Environment and Children's Study recruited between 2011 and 2014 were followed until their children reached 3 years of age. Outcomes included 1 min Apgar score <7, caesarean delivery, childhood obesity, gestational diabetes, pregnancy-induced hypertension, low birth weight, large for gestational age, macrosomia, operative vaginal delivery, postpartum weight retention, preterm birth and small for gestational age. The optimal GWG ranges were determined using multivariate logistic regression models. Stratified analyses were performed to determine optimal GWG ranges according to quartiles of heavy metals. Optimal GWGs for underweight, normal weight and overweight women were found to be 10.0 to <14.0 kg, 6.0 to <12.0 kg and 4.0 to <8.0 kg, respectively. However, the benefits of optimal GWG were attenuated in women exposed to high concentrations of mercury (Hg), lead (Pb) and cadmium (Cd). Despite being within optimal GWG, underweight women with Hg > 5.21 ng/g and overweight women with Hg 3.67-5.21 ng/g, Pb > 7.31 ng/g and Cd > 0.66 ng/g had null effects. Heavy metals can modify the associations between GWG and outcomes, particularly for underweight and overweight women. Because of the complex interactions of environmental toxicants with pre-pregnancy BMI, GWG and adverse outcomes, GWG guidelines should be interpreted cautiously. Environmental toxicants may influence the determination of a clinical guideline.
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Affiliation(s)
- Chau-Ren Jung
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Tsukuba, Japan
| | - Shoji F Nakayama
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Tsukuba, Japan.
| | - Tomohiko Isobe
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Tsukuba, Japan
| | - Miyuki Iwai-Shimada
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Tsukuba, Japan
| | - Yayoi Kobayashi
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Tsukuba, Japan
| | - Yukiko Nishihama
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Tsukuba, Japan
| | - Takehiro Michikawa
- Department of Environmental and Occupational Health, School of Medicine, Toho University, Tokyo, Japan
| | - Makiko Sekiyama
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Tsukuba, Japan
| | - Yu Taniguchi
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Tsukuba, Japan
| | - Hiroshi Nitta
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Tsukuba, Japan
| | - Shin Yamazaki
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Tsukuba, Japan
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Zare Jeddi M, Hopf NB, Viegas S, Price AB, Paini A, van Thriel C, Benfenati E, Ndaw S, Bessems J, Behnisch PA, Leng G, Duca RC, Verhagen H, Cubadda F, Brennan L, Ali I, David A, Mustieles V, Fernandez MF, Louro H, Pasanen-Kase R. Towards a systematic use of effect biomarkers in population and occupational biomonitoring. ENVIRONMENT INTERNATIONAL 2021; 146:106257. [PMID: 33395925 DOI: 10.1016/j.envint.2020.106257] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 09/25/2020] [Accepted: 10/30/2020] [Indexed: 06/12/2023]
Abstract
Effect biomarkers can be used to elucidate relationships between exposure to environmental chemicals and their mixtures with associated health outcomes, but they are often underused, as underlying biological mechanisms are not understood. We aim to provide an overview of available effect biomarkers for monitoring chemical exposures in the general and occupational populations, and highlight their potential in monitoring humans exposed to chemical mixtures. We also discuss the role of the adverse outcome pathway (AOP) framework and physiologically based kinetic and dynamic (PBK/D) modelling to strengthen the understanding of the biological mechanism of effect biomarkers, and in particular for use in regulatory risk assessments. An interdisciplinary network of experts from the European chapter of the International Society for Exposure Science (ISES Europe) and the Organization for Economic Co-operation and Development (OECD) Occupational Biomonitoring activity of Working Parties of Hazard and Exposure Assessment group worked together to map the conventional framework of biomarkers and provided recommendations for their systematic use. We summarized the key aspects of this work here, and discussed these in three parts. Part I, we inventory available effect biomarkers and promising new biomarkers for the general population based on the H2020 Human Biomonitoring for Europe (HBM4EU) initiative. Part II, we provide an overview AOP and PBK/D modelling use that improved the selection and interpretation of effect biomarkers. Part III, we describe the collected expertise from the OECD Occupational Biomonitoring subtask effect biomarkers in prioritizing relevant mode of actions (MoAs) and suitable effect biomarkers. Furthermore, we propose a tiered risk assessment approach for occupational biomonitoring. Several effect biomarkers, especially for use in occupational settings, are validated. They offer a direct assessment of the overall health risks associated with exposure to chemicals, chemical mixtures and their transformation products. Promising novel effect biomarkers are emerging for biomonitoring of the general population. Efforts are being dedicated to prioritizing molecular and biochemical effect biomarkers that can provide a causal link in exposure-health outcome associations. This mechanistic approach has great potential in improving human health risk assessment. New techniques such as in silico methods (e.g. QSAR, PBK/D modelling) as well as 'omics data will aid this process. Our multidisciplinary review represents a starting point for enhancing the identification of effect biomarkers and their mechanistic pathways following the AOP framework. This may help in prioritizing the effect biomarker implementation as well as defining threshold limits for chemical mixtures in a more structured way. Several ex vivo biomarkers have been proposed to evaluate combined effects including genotoxicity and xeno-estrogenicity. There is a regulatory need to derive effect-based trigger values using the increasing mechanistic knowledge coming from the AOP framework to address adverse health effects due to exposure to chemical mixtures. Such a mechanistic strategy would reduce the fragmentation observed in different regulations. It could also stimulate a harmonized use of effect biomarkers in a more comparable way, in particular for risk assessments to chemical mixtures.
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Affiliation(s)
- Maryam Zare Jeddi
- Unit of Biostatistics, Epidemiology and Public Health, Department of Cardio-Thoraco-Vascular Sciences and Public Health, University of Padova, Italy
| | - Nancy B Hopf
- Center for Primary Care and Public Health (Unisanté), University of Lausanne, Lausanne, Epalinges, Switzerland
| | - Susana Viegas
- NOVA National School of Public Health, Public Health Research Centre, Universidade NOVA de Lisboa, 1600-560 Lisbon, Portugal; Comprehensive Health Research Center (CHRC), 1150-090 Lisbon, Portugal; H&TRC-Health & Technology Research Center, ESTeSL-Escola Superior de Tecnologia da Saúde, Instituto Politécnico de Lisboa, 1990-096 Lisbon, Portugal
| | - Anna Bal Price
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | - Alicia Paini
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | - Christoph van Thriel
- Leibniz Research Centre for Working Environment and Human Factors at the Technical University of Dortmund (IfADo), Ardeystrasse 67, 44139 Dortmund, Germany
| | - Emilio Benfenati
- Laboratory of Environmental Chemistry and Toxicology, Istituto Di Ricerche Farmacologiche Mario Negri IRCCS, Via La Masa, 19, 20156 Milano, Italy
| | - Sophie Ndaw
- INRS-French National Research and Safety Institute, France
| | - Jos Bessems
- VITO - Flemish Institute for Technological Research, Belgium
| | - Peter A Behnisch
- BioDetection Systems b.v., Science Park 406, 1098 XH Amsterdam, the Netherlands
| | - Gabriele Leng
- Currenta GmbH Co. OHG, Institute of Biomonitoring, Leverkusen, Germany
| | - Radu-Corneliu Duca
- Unit Environmental Hygiene and Human Biological Monitoring, Department of Health Protection, National Health Laboratory, Dudelange, Luxembourg
| | - Hans Verhagen
- Food Safety & Nutrition Consultancy (FSNConsultancy), Zeist, the Netherlands
| | - Francesco Cubadda
- Istituto Superiore di Sanità-National Institute of Health, Rome, Italy
| | - Lorraine Brennan
- School of Agriculture and Food Science, Institute of Food and Health, University College Dublin, Dublin, Ireland
| | - Imran Ali
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Arthur David
- Univ Rennes, Inserm, EHESP, Irset (Institut de Recherche en Santé, Environnement et Travail)-UMR_S 1085, F-35000 Rennes, France
| | - Vicente Mustieles
- University of Granada, Center for Biomedical Research (CIBM), Granada, Spain; Consortium for Biomedical Research in Epidemiology & Public Health (CIBERESP), Madrid, Spain
| | - Mariana F Fernandez
- University of Granada, Center for Biomedical Research (CIBM), Granada, Spain; Consortium for Biomedical Research in Epidemiology & Public Health (CIBERESP), Madrid, Spain
| | - Henriqueta Louro
- National Institute of Health Dr. Ricardo Jorge, Department of Human Genetics, Lisboa and ToxOmics - Centre for Toxicogenomics and Human Health, NOVA Medical School, Universidade Nova de Lisboa, Portugal
| | - Robert Pasanen-Kase
- State Secretariat for Economic Affairs (SECO), Labour Directorate Section Chemicals and Work (ABCH), Switzerland.
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Marini M, Caro D, Thomsen M. The new fertilizer regulation: A starting point for cadmium control in European arable soils? THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 745:140876. [PMID: 32726694 DOI: 10.1016/j.scitotenv.2020.140876] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 07/08/2020] [Accepted: 07/08/2020] [Indexed: 06/11/2023]
Abstract
Bioaccumulation of cadmium (Cd) in the agricultural soil constitutes a dangerous risk for the health of both the environment and humans. Especially in the European Union, a large amount of Cd in agricultural topsoil originates from mineral fertilizer application. In this context, the EU has recently adopted the Regulation (EU) 2019/1009 with the aim to establish stricter limits for Cd presence in fertilizer products and to promote a higher use of fertilizers from organic sources. This paper discusses the future implications of the new regulation to limit the presence of cadmium (Cd) in agricultural soils and food products. The Regulation (EU) 2019/1009 represents an important step of the EU circular economy action plan with its aim to encourage the production of low cadmium content fertilizers. This paper focuses on the limits of the Regulation (EU) 2019/1009 and on the need for complementary policy instruments to protect and conserve agricultural soil health. We highlight the recently proposed, and subsequently withdrawn, EU Soil Framework Directive (SFD) as a meaningful complementary policy tool in the context of a renewed effort to pursue protection and conservation of soil health.
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Affiliation(s)
- Michele Marini
- Research Group on EcoIndustrial System Analysis, Department of Environmental Science, Aarhus University, Frederiksborgvej 399, Postboks 358, DK-4000 Roskilde, Denmark
| | - Dario Caro
- Research Group on EcoIndustrial System Analysis, Department of Environmental Science, Aarhus University, Frederiksborgvej 399, Postboks 358, DK-4000 Roskilde, Denmark
| | - Marianne Thomsen
- Research Group on EcoIndustrial System Analysis, Department of Environmental Science, Aarhus University, Frederiksborgvej 399, Postboks 358, DK-4000 Roskilde, Denmark; Aarhus University Centre for Circular Bioeconomy, Denmark.
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Widhalm R, Ellinger I, Granitzer S, Forsthuber M, Bajtela R, Gelles K, Hartig PY, Hengstschläger M, Zeisler H, Salzer H, Gundacker C. Human placental cell line HTR-8/SVneo accumulates cadmium by divalent metal transporters DMT1 and ZIP14. Metallomics 2020; 12:1822-1833. [PMID: 33146651 DOI: 10.1039/d0mt00199f] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Cadmium (Cd) is a global pollutant that accumulates in the placenta and can cause placental dysfunction. Although iron transporters have been suggested to participate in placental Cd uptake, it is still unknown which transporters are actually involved in this process. We specifically aimed to study the role of three iron transporters in the uptake of Cd into the placental cell line HTR-8/SVneo. For this purpose, Divalent Metal Transporter (DMT)1 and ZRT/IRT like protein (ZIP)8 and ZIP14 were downregulated and changes in cellular Cd levels analysed in relation to controls. As clearly shown by the reduction of the Cd content by ∼60% in DMT1- and ZIP14-downregulated cells, the two proteins are essential for Cd accumulation in HTR-8/SVneo cells. Using a validated antibody, we show DMT1 to be localised in situ in trophoblast and stromal cells. We further wanted to investigate how placental cells cope with Cd loading and which metallothionein (MT) isoforms they express. Cd-exposed cells accumulate Cd in a dose-dependent manner and upregulate MT2A accordingly (up to 15-fold induction upon 5 μM CdCl2 treatment for 72 h). 5 μM Cd exposure for 72 h decreased cell number to 60%, an effect that was aggravated by MT2A depletion (cell number reduced to 30%) indicating additive effects. In conclusion, our data suggest that DMT1 and ZIP14 are required for Cd uptake into human placental cells that upregulate MT2A to store and detoxify the metal. Cd storage in the placenta reduces Cd transport to the fetus, which, however, could impair placental functions and fetal development.
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Affiliation(s)
- Raimund Widhalm
- Karl-Landsteiner Private University for Health Sciences, Krems, Austria
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Cowell W, Colicino E, Tanner E, Amarasiriwardena C, Andra SS, Bollati V, Kannan S, Ganguri H, Gennings C, Wright RO, Wright RJ. Prenatal toxic metal mixture exposure and newborn telomere length: Modification by maternal antioxidant intake. ENVIRONMENTAL RESEARCH 2020; 190:110009. [PMID: 32777275 PMCID: PMC7530067 DOI: 10.1016/j.envres.2020.110009] [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: 06/01/2020] [Revised: 07/15/2020] [Accepted: 07/24/2020] [Indexed: 05/25/2023]
Abstract
BACKGROUND Telomere length (TL) predicts the onset of cellular senescence and correlates with longevity and age-related disease risk. While telomeres erode throughout life, adults display fixed ranking and tracking of TL, supporting the importance of the early environment in determining inter-individual variability across the life course. Given their guanine-rich structure, telomeres are highly susceptible to oxidative stress (OS). We examined maternal metal exposure, which can induce OS, in relation to newborn TL. We also considered the modifying role of maternal antioxidant intake. METHODS Analyses included 100 mother-newborn pairs enrolled in the Boston and New York City-based PRogramming of Intergenerational Stress Mechanisms (PRISM) pregnancy cohort. We measured As, Ba, Cd, Ni, and Pb in maternal late-pregnancy urine by ICP-MS and quantified relative leukocyte TL (rLTL) in cord blood using qPCR. We used Weighted Quantile Sum (WQS) regression to estimate the metal mixture - rLTL association and conducted repeated holdout validation to improve the stability of estimates across data partitions. We examined models stratified by high (>median) versus low (≤median) maternal antioxidant intake, estimated from Block98 Food Frequency Questionnaires. We considered urinary creatinine, week of urine collection, maternal age, and race/ethnicity as covariates. RESULTS In adjusted models, urinary metals were inversely associated with newborn rLTL (βWQS = -0.50, 95% CI: -0.78, -0.21). The top metals contributing to the negative association included Ba (weight: 35.4%), Cd (24.5%) and Pb (26.9%). In models stratified by antioxidant intake, the significant inverse association between metals and rLTL remained only among mothers with low antioxidant intake (low: βWQS = -0.92, 95% CI: -1.53, -0.30; high: βWQS = -0.03, 95% CI: -0.58, 0.52). Results were similar in unadjusted models. CONCLUSIONS Relative LTL was shorter among newborns of mothers with higher exposure to metals during pregnancy. Higher maternal antioxidant intake may mitigate the negative influence of metals on newborn rLTL.
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Affiliation(s)
- Whitney Cowell
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
| | - Elena Colicino
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Eva Tanner
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Chitra Amarasiriwardena
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Syam S Andra
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Valentina Bollati
- EPIGET Lab, Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Srimathi Kannan
- Division of Metabolism, Endocrinology, and Diabetes, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Harish Ganguri
- Department of Information Systems Security, University of Cumberlands, Williamsburg, KY, USA
| | - Chris Gennings
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Robert O Wright
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Institute for Exposomic Research, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Rosalind J Wright
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Institute for Exposomic Research, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Department of Pediatrics, Kravis Children's Hospital, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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83
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de Figueiredo ND, Araújo MS, Luiz RR, de Magalhaes Câmara V, do Couto Jacob S, Dos Santos LMG, Vicentini SA, Asmus CIRF. Metal mixtures in pregnant women and umbilical cord blood at urban populations-Rio de Janeiro, Brazil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:40210-40218. [PMID: 32661970 DOI: 10.1007/s11356-020-10021-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Accepted: 07/06/2020] [Indexed: 06/11/2023]
Abstract
This study aims to assess interrelationships between serum lead (Pb), cadmium (Cd), arsenic (As), and mercury (Hg) concentrations in pregnant women in their third trimester and umbilical cord blood, while inter-metal correlations were also determined. This study is part of the PIPA project (Childhood and Environmental Pollutant Project), whose pilot study was carried out from October 2017 to August 2018 and will be presented here. Blood samples were obtained from 117 mother-umbilical cord pairs and analyzed concerning metal concentrations. A positive correlation was found between metal concentrations in mother and cord blood (R > 0.7, p < 0.001). The results indicate that mother metal concentrations are able to determine child metal concentrations (p < 0.001). The correlations between maternal blood metal concentrations were positive for all assessed metals except for As and Hg. The strongest correlations in this matrix were observed between Cd and Pb (R = 0.471 p = 0.000), Cd and Hg (R = 0.425 p = 0.000), and Pb and Hg (R = 0.427 p = 0.000). Umbilical cord correlations were lower compared to mother blood correlations. In general, the four analyzed metals displayed significant correlations to serum concentrations in both maternal and cord blood.
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Affiliation(s)
- Nataly Damasceno de Figueiredo
- Public Health Institute (IESC), School of Medicina, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
- Maternity School, School of Medicina, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
| | - Monica Seefelder Araújo
- Public Health Institute (IESC), School of Medicina, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Ronir R Luiz
- Public Health Institute (IESC), School of Medicina, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Volney de Magalhaes Câmara
- Public Health Institute (IESC), School of Medicina, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Silvana do Couto Jacob
- Chemistry Department, National Institute of Quality Control in Health (INCQS), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil
| | - Lisia Maria Gobbo Dos Santos
- Chemistry Department, National Institute of Quality Control in Health (INCQS), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil
| | - Santos Alves Vicentini
- Chemistry Department, National Institute of Quality Control in Health (INCQS), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil
| | - Carmen Ildes Rodrigues Froes Asmus
- Public Health Institute (IESC), School of Medicina, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Maternity School, School of Medicina, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
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84
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Granitzer S, Ellinger I, Khan R, Gelles K, Widhalm R, Hengstschläger M, Zeisler H, Desoye G, Tupova L, Ceckova M, Salzer H, Gundacker C. In vitro function and in situ localization of Multidrug Resistance-associated Protein (MRP)1 (ABCC1) suggest a protective role against methyl mercury-induced oxidative stress in the human placenta. Arch Toxicol 2020; 94:3799-3817. [PMID: 32915249 PMCID: PMC7603445 DOI: 10.1007/s00204-020-02900-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 09/02/2020] [Indexed: 02/06/2023]
Abstract
Methyl mercury (MeHg) is an organic highly toxic compound that is transported efficiently via the human placenta. Our previous data suggest that MeHg is taken up into placental cells by amino acid transporters while mercury export from placental cells mainly involves ATP binding cassette (ABC) transporters. We hypothesized that the ABC transporter multidrug resistance-associated protein (MRP)1 (ABCC1) plays an essential role in mercury export from the human placenta. Transwell transport studies with MRP1-overexpressing Madin-Darby Canine Kidney (MDCK)II cells confirmed the function of MRP1 in polarized mercury efflux. Consistent with this, siRNA-mediated MRP1 gene knockdown in the human placental cell line HTR-8/SVneo resulted in intracellular mercury accumulation, which was associated with reduced cell viability, accompanied by increased cytotoxicity, apoptosis, and oxidative stress as determined via the glutathione (GSH) status. In addition, the many sources claiming different localization of MRP1 in the placenta required a re-evaluation of its localization in placental tissue sections by immunofluorescence microscopy using an MRP1-specific antibody that was validated in-house. Taken together, our results show that (1) MRP1 preferentially mediates apical-to-basolateral mercury transport in epithelial cells, (2) MRP1 regulates the GSH status of placental cells, (3) MRP1 function has a decisive influence on the viability of placental cells exposed to low MeHg concentrations, and (4) the in situ localization of MRP1 corresponds to mercury transport from maternal circulation to the placenta and fetus. We conclude that MRP1 protects placental cells from MeHg-induced oxidative stress by exporting the toxic metal and by maintaining the placental cells' GSH status in equilibrium.
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Affiliation(s)
- Sebastian Granitzer
- Karl-Landsteiner Private University for Health Sciences, Krems, Austria
- Institute of Medical Genetics, Medical University of Vienna, Vienna, Austria
| | - Isabella Ellinger
- Institute of Pathophysiology and Allergy Research, Medical University of Vienna, Vienna, Austria
| | - Rumsha Khan
- Institute of Medical Genetics, Medical University of Vienna, Vienna, Austria
- Institute of Pathophysiology and Allergy Research, Medical University of Vienna, Vienna, Austria
| | - Katharina Gelles
- Institute of Pathophysiology and Allergy Research, Medical University of Vienna, Vienna, Austria
| | - Raimund Widhalm
- Karl-Landsteiner Private University for Health Sciences, Krems, Austria
- Institute of Medical Genetics, Medical University of Vienna, Vienna, Austria
| | | | - Harald Zeisler
- Department of Obstetrics and Gynecology, Medical University Vienna, Vienna, Austria
| | - Gernot Desoye
- Department of Obstetrics and Gynecology, Medical University of Graz, Graz, Austria
| | - Lenka Tupova
- Department of Pharmacology and Toxicology, Charles University, Hradec Kralove, Czech Republic
| | - Martina Ceckova
- Department of Pharmacology and Toxicology, Charles University, Hradec Kralove, Czech Republic
| | - Hans Salzer
- Clinic for Pediatrics and Adolescent Medicine, University Hospital Tulln, Tulln, Austria
| | - Claudia Gundacker
- Institute of Medical Genetics, Medical University of Vienna, Vienna, Austria.
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85
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Air Pollution-Related Brain Metal Dyshomeostasis as a Potential Risk Factor for Neurodevelopmental Disorders and Neurodegenerative Diseases. ATMOSPHERE 2020. [DOI: 10.3390/atmos11101098] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Increasing evidence links air pollution (AP) exposure to effects on the central nervous system structure and function. Particulate matter AP, especially the ultrafine (nanoparticle) components, can carry numerous metal and trace element contaminants that can reach the brain in utero and after birth. Excess brain exposure to either essential or non-essential elements can result in brain dyshomeostasis, which has been implicated in both neurodevelopmental disorders (NDDs; autism spectrum disorder, schizophrenia, and attention deficit hyperactivity disorder) and neurodegenerative diseases (NDGDs; Alzheimer’s disease, Parkinson’s disease, multiple sclerosis, and amyotrophic lateral sclerosis). This review summarizes the current understanding of the extent to which the inhalational or intranasal instillation of metals reproduces in vivo the shared features of NDDs and NDGDs, including enlarged lateral ventricles, alterations in myelination, glutamatergic dysfunction, neuronal cell death, inflammation, microglial activation, oxidative stress, mitochondrial dysfunction, altered social behaviors, cognitive dysfunction, and impulsivity. Although evidence is limited to date, neuronal cell death, oxidative stress, and mitochondrial dysfunction are reproduced by numerous metals. Understanding the specific contribution of metals/trace elements to this neurotoxicity can guide the development of more realistic animal exposure models of human AP exposure and consequently lead to a more meaningful approach to mechanistic studies, potential intervention strategies, and regulatory requirements.
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86
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Sajnóg A, Tkaczyk M, Stańczyk M, Szaflik K, Suliburska J, Kocyłowski R, Barałkiewicz D. A new procedure for the determination of 21 macro- and trace elements in human fetal urine using an inductively coupled plasma mass spectrometry with dynamic reaction cell (ICP-DRC-MS) equipped with a micro-flow nebulizer. Talanta 2020; 222:121672. [PMID: 33167281 DOI: 10.1016/j.talanta.2020.121672] [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: 07/01/2020] [Revised: 09/10/2020] [Accepted: 09/14/2020] [Indexed: 11/27/2022]
Abstract
The procedure for determination of 21 macro- and trace elements - Li, Na, Mg, Al, K, Ca, V, Cr, Mn, Fe, Co, Cu, Zn, Se, Sr, As, Cd, Sb, Ba, Pb and U - in human fetal urine by inductively coupled plasma mass spectrometry (ICP-MS) was developed and validated. The application of a micronebulizer and a dynamic reaction cell (DRC) allowed to perform a full analysis of small volumes (200 μL) of urine collected from human fetuses without the need for sample digestion with closed microwave systems. The procedure and ICP-MS instrument was thoroughly optimized in order to reliably determine both macroelements and ultra-trace concentrations of elements. The internal standard method (Ge, Rh and Tb) was applied in order to encompass signal drift and non-spectral interferences. The rules of metrology were used in order to ensure the quality of the results: (1) the procedure was validated, (2) the uncertainty of the measurement results was estimated and (3) the traceability of the measurement result was established by using the certified reference material with matching matrix (Seronorm Trace Elements Urine L-1). Also, the analyte addition method to the artificial urine was employed for additional confirmation of trueness of the procedure. The selected parameters of the procedure were as follows: (a) limits of detection - (0.00023-53 μg L-1) for U and Ca, respectively, (b) recoveries of the reference value - 81%-136% for Mn and Cd, respectively (c) linearity expressed as R - greater than 0.999, and (d) expanded relative uncertainties (k = 2) - 13%-66% for Sr and Cd, respectively. The developed and validated procedure was applied to 58 samples of urine collected from human fetuses. The samples were diluted with nitric acid and analyzed without further treatment. The procedure allowed to reliably determine both macro- and trace elements in very low volume of sample in a single analytical run.
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Affiliation(s)
- Adam Sajnóg
- Department of Trace Analysis, Faculty of Chemistry, Adam Mickiewicz University, Poznań, ul. Uniwersytetu Poznańskiego 8, 61-614, Poznań, Poland; Center for Advanced Technology, Adam Mickiewicz University, Poznań, ul. Uniwersytetu Poznańskiego 10, 61-614, Poznań, Poland.
| | - Marcin Tkaczyk
- Department of Pediatrics, Immunology and Nephrology, Polish Mother's Memorial Hospital Research Institute, ul. Rzgowska 281/289, 93-338, Lódź, Poland
| | - Małgorzata Stańczyk
- Department of Pediatrics, Immunology and Nephrology, Polish Mother's Memorial Hospital Research Institute, ul. Rzgowska 281/289, 93-338, Lódź, Poland
| | - Krzysztof Szaflik
- Department of Gynecology, Fertility and Fetal Therapy, Polish Mother's Memorial Hospital Research Institute, ul. Rzgowska 281/289, 93-338, Lódź, Poland
| | - Joanna Suliburska
- Institute of Human Nutrition and Dietetics, Poznan University of Life Sciences, ul. Wojska Polskiego 31, 60-624, Poznań, Poland
| | - Rafał Kocyłowski
- PreMediCare New Med Medical Center, ul. Drużbickiego 13, 61-693, Poznań, Poland
| | - Danuta Barałkiewicz
- Department of Trace Analysis, Faculty of Chemistry, Adam Mickiewicz University, Poznań, ul. Uniwersytetu Poznańskiego 8, 61-614, Poznań, Poland
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87
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El-Dairi R, Huuskonen P, Pasanen M, Rysä J. Aryl hydrocarbon receptor (AhR) agonist β-naphthoflavone regulated gene networks in human primary trophoblasts. Reprod Toxicol 2020; 96:370-379. [PMID: 32858204 DOI: 10.1016/j.reprotox.2020.08.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 08/16/2020] [Accepted: 08/18/2020] [Indexed: 12/27/2022]
Abstract
The aryl hydrocarbon receptor (AhR) is a ligand-activated transcription factor that is highly expressed in placenta. AhR belongs to a class of transcriptional regulators that control many developmental and physiological events (e.g. xenobiotic metabolism). Our study describes AhR regulated transcriptional responses in human primary trophoblast by using the AhR agonist, β-naphthoflavone (BNF). Human primary trophoblast cells were isolated from full term placenta after delivery. The trophoblasts were exposed to 25 μM of AhR agonist, BNF, for 72 hours. Gene expression profiling was conducted with Illumina HT-12 expression beadchips. Expression of selected genes was confirmed with RT-qPCR. Ingenuity pathway analysis (IPA) was used to predict functional pathways and upstream regulators of differentially expressed genes in order to identify regulatory networks associated with AhR. In response to BNF exposure, 64 genes were upregulated, and 257 genes were downregulated compared to control trophoblasts (±1.5-fold, p < 0.05). BNF regulated genes included placental hormones and genes implicated in immune- and inflammatory responses in addition to their well-known effects on xenobiotic metabolism, oxidative stress, antioxidant defense. In conclusion, these results show that BNF has wide-ranging effects on placental gene expression beyond xenobiotic metabolism e.g. disruption of inflammatory processes and hormones in the placenta.
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Affiliation(s)
- Rami El-Dairi
- School of Pharmacy, University of Eastern Finland, Kuopio, Finland.
| | - Pasi Huuskonen
- School of Pharmacy, University of Eastern Finland, Kuopio, Finland.
| | - Markku Pasanen
- School of Pharmacy, University of Eastern Finland, Kuopio, Finland.
| | - Jaana Rysä
- School of Pharmacy, University of Eastern Finland, Kuopio, Finland.
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88
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Exposure to mercury induced early apoptotic signals in human placental BeWo cells through alteration of cell cycle regulation. Mol Cell Toxicol 2020. [DOI: 10.1007/s13273-020-00098-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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89
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Gundacker C, Ellinger I. The unique applicability of the human placenta to the Adverse Outcome Pathway (AOP) concept: the placenta provides fundamental insights into human organ functions at multiple levels of biological organization. Reprod Toxicol 2020; 96:273-281. [PMID: 32768559 DOI: 10.1016/j.reprotox.2020.07.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 07/27/2020] [Accepted: 07/31/2020] [Indexed: 12/17/2022]
Abstract
Despite the short lifespan of the human placenta, the proper formation and function of the organ is of crucial importance for fetal development. Placental dysfunction increases the risk of complications for mother and child during pregnancy and childbirth and beyond as it predisposes to fetal programming. The placenta is an upstream organ of the fetus. It performs the functions of fetal lungs, liver, intestines, kidneys and glands as long as these organs are not fully functional. Furthermore, it is the only human organ that is non-invasively available either after elective abortion or after birth. This is a crucial point given that the conceptual framework of Adverse Outcome Pathway (AOP) requires data on organ function. In vitro and ex vivo placental studies, combined with epidemiological and clinical data on pregnant women, newborns, and infants can uniquely cover all levels of information needed to develop new AOPs and complement existing AOPs related to reproductive toxicity and beyond. To stimulate further research in this area and to support researchers in future studies dealing with the development of AOPs related to the placenta, this review first gives a brief description of placental structure, placental development and relevant pregnancy diseases. The state of knowledge about the available placental models, their particularities and limitations are briefly discussed. Finally, the use of placental research for the development of AOPs is presented with an illustrative example.
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Affiliation(s)
- Claudia Gundacker
- Institute of Medical Genetics, Medical University Vienna, Vienna, Austria.
| | - Isabella Ellinger
- Institute for Pathophysiology and Allergy Research, Medical University Vienna, Vienna, Austria
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90
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Wai KM, Ser PH, Ahmad SA, Yasmin R, Ito Y, Konishi S, Umezaki M, Watanabe C. In-utero arsenic exposure and growth of infants from birth to 6 months of age: a prospective cohort study in rural Bangladesh. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2020; 30:421-434. [PMID: 30924685 DOI: 10.1080/09603123.2019.1597835] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Accepted: 03/14/2019] [Indexed: 06/09/2023]
Abstract
Arsenic exposure in postnatal life impacts the growth of children, but little is known about the effect of in-utero arsenic exposure on growth very early in childhood. The aim of this study was to examine the associations between in-utero arsenic exposure and the growth of infants from birth to 6 months of age using monthly follow-up data. A prospective cohort study was conducted in rural areas of Bangladesh with 108 mother-infant pairs. This study identified a negative association between in-utero arsenic exposure and head circumference of infants 1-6 months of age (coefficient = -1.20, 95% confidence interval [CI]: -1.97, -0.42), and the effect was more pronounced in the earlier ages of 1-3 months (coefficient = -0.88, 95% CI: -1.70, -0.05). Because head circumference is considered as a surrogate of brain size, our findings suggest that in-utero arsenic exposure influences brain growth during an important developmental period.
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Affiliation(s)
- Kyi Mar Wai
- Department of Human Ecology, School of International Health, Graduate School of Medicine, The University of Tokyo , Tokyo, Japan
| | - Ping Han Ser
- Department of Human Ecology, School of International Health, Graduate School of Medicine, The University of Tokyo , Tokyo, Japan
| | - Sk Akhtar Ahmad
- Department of Occupation and Environmental Health, Bangladesh University of Health Sciences , Dhaka, Bangladesh
| | - Rabeya Yasmin
- Department of Occupation and Environmental Health, Bangladesh University of Health Sciences , Dhaka, Bangladesh
| | - Yasunori Ito
- Institute of Environmental Ecology, IDEA Consultants International , Shizuoka, Japan
| | - Shoko Konishi
- Department of Human Ecology, School of International Health, Graduate School of Medicine, The University of Tokyo , Tokyo, Japan
- Department of Anthropology, University of Washington , Seattle, WA, USA
| | - Masahiro Umezaki
- Department of Human Ecology, School of International Health, Graduate School of Medicine, The University of Tokyo , Tokyo, Japan
| | - Chiho Watanabe
- Department of Human Ecology, School of International Health, Graduate School of Medicine, The University of Tokyo , Tokyo, Japan
- National Institute for Environmental Studies , Tsukuba, Japan
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91
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Periconceptional and prenatal exposure to metal mixtures in relation to behavioral development at 3 years of age. Environ Epidemiol 2020; 4:e0106. [PMID: 33154986 PMCID: PMC7595192 DOI: 10.1097/ee9.0000000000000106] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 06/16/2020] [Indexed: 12/17/2022] Open
Abstract
Supplemental Digital Content is available in the text. Behavioral effects of prenatal exposure to mixtures of essential and toxic metals are incompletely understood.
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92
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Kabamba M, Tuakuila J. Toxic metal (Cd, Hg, Mn, Pb) partition in the maternal/foetal unit: A systematic mini - review of recent epidemiological studies. Toxicol Lett 2020; 332:20-26. [PMID: 32569801 DOI: 10.1016/j.toxlet.2020.06.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 06/01/2020] [Accepted: 06/07/2020] [Indexed: 02/02/2023]
Abstract
The aim of this study was to summarise the available information regarding the partition of toxic metal (Cd, Hg, Mn, Pb) levels in the maternal/foetal unit from large epidemiological studies. We performed a systematic search of PubMed/MedLine, EMBASE, and ISI Web of Science for papers on Cd, total Hg, Mn or Pb levels in the maternal/cord blood that were published in English (n > = 200; 2010-2017). Data on year of publication, sample size, location, year of survey, and main results were extracted. We found a total of 35 papers. Most studies included large convenience samples of healthy pregnant women. The maternal/cord blood was properly used as a biomarker of prenatal exposure to toxic metals. The partition of these toxic metal levels in the maternal/foetal unit was metal-specific. Cd median levels (IQR) in cord blood reported worldwide were much lower [∼ 70 % < LOD = ± 0.11 μg/L] than those found in maternal blood [0.23 μg/L (0.15-0.35), ∼ 65 % > LOD]. Considering that Cd was under LOD in 70 % of the cord blood, Cd cord:maternal ratio as well as Cd cord proportion were not provided. Total Hg median levels (IQR) in cord blood [0.75 μg/L (0.40-1.19), ∼30 % < LOD = ±0.35 μg/L] were usually higher than in maternal blood [0.55 μg/L (0.40-0.85), ∼ 10 % < LOD = ±0.15 μg/L]. Hg cord:maternal ratio was 1.34 (1.00-1.91), and infants born would have Hg cord:(cord + maternal) proportion ranged from 0.50 to 0.63. Mn was the only metal that was detected in 100 % in both maternal (LOD : ±0.50 μg/L) and cord (LOD = ±0.2 μg/L) blood. Mn median levels (IQR) in cord blood [32.96 μg/L (26.90-40.10)] were 2 times higher than in maternal blood [14.01 μg/L (11.50-17.58)]. Mn cord:maternal ratio was 2.35 (1.09-3.80), and infants born would have Mn proportion ranged from 0.52 to 0.79. Pb median levels (IQR) in cord blood [5.79 μg/L (4.34-8.38), ∼ 5% < LOD : ±2.07 μg/L] were usually equal to or lower than those reported in maternal blood [8.07 μg/L (5.79-10.76), ∼ 1% < LOD = ±1.03 μg/L]. Pb cord:maternal ratio was 0.71 (0.59-0.96), and infants born would have Pb proportion ranged from 0.37 to 0.49. Globally, the results indicate that total Hg and Mn levels were lower in maternal blood but higher in cord blood. However, much greater variability was seen with Cd and Pb. At delivery, total Hg and Pb levels in maternal blood were strong predictors of cord blood levels. Our findings empty that understanding the partition, levels and correlations of toxic metals in the maternal/cord blood may help to elucidate the adverse effects of these metals on foetuses and neonates.
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Affiliation(s)
- M Kabamba
- Faculty of Sciences, University of Kinshasa, Democratic Republic of Congo
| | - J Tuakuila
- Faculty of Sciences, University of Kinshasa, Democratic Republic of Congo; Faculty of Health Sciences, University of Sherbrooke, Quebec, Canada.
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93
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Pizent A, Lazarus M, Kovačić J, Tariba Lovaković B, Brčić Karačonji I, Živković Semren T, Sekovanić A, Orct T, Branović-Čakanić K, Brajenović N, Jurič A, Miškulin I, Škrgatić L, Stasenko S, Mioč T, Jurasović J, Piasek M. Cigarette Smoking during Pregnancy: Effects on Antioxidant Enzymes, Metallothionein and Trace Elements in Mother-Newborn Pairs. Biomolecules 2020; 10:E892. [PMID: 32532134 PMCID: PMC7356311 DOI: 10.3390/biom10060892] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 06/04/2020] [Accepted: 06/09/2020] [Indexed: 12/13/2022] Open
Abstract
The effect of maternal smoking as a source of exposure to toxic metals Cd and Pb on superoxide dismutase (SOD) and glutathione peroxidase (GPx) activity, metallothionein (MT), Cd, Pb, Cu, Fe, Mn, Se and Zn concentrations were assessed in maternal and umbilical cord blood and placenta in 74 healthy mother-newborn pairs after term delivery. Sparse discriminant analysis (SDA) was used to identify elements with the strongest impact on the SOD, GPx and MT in the measured compartments, which was then quantified by multiple regression analysis. SOD activity was lower in maternal and cord plasma, and higher in the placenta of smokers compared to non-smokers, whereas GPx activity and MT concentration did not differ between the groups. Although active smoking during pregnancy contributed to higher maternal Cd and Pb concentrations, its contribution to the variability of SOD, GPx or MT after control for other elements identified by SDA was not significant. However, an impaired balance in the antioxidant defence observed in the conditions of relatively low-to-moderate exposure levels to Cd and Pb could contribute to an increased susceptibility of offspring to oxidative stress and risk of disease development later in life. Further study on a larger number of subjects will help to better understand complex interactions between exposure to toxic elements and oxidative stress related to maternal cigarette smoking.
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Affiliation(s)
- Alica Pizent
- Institute for Medical Research and Occupational Health, 10000 Zagreb, Croatia; (A.P.); (J.K.); (B.T.L.); (I.B.K.); (T.Ž.S.); (A.S.); (T.O.); (N.B.); (A.J.); (J.J.); (M.P.)
| | - Maja Lazarus
- Institute for Medical Research and Occupational Health, 10000 Zagreb, Croatia; (A.P.); (J.K.); (B.T.L.); (I.B.K.); (T.Ž.S.); (A.S.); (T.O.); (N.B.); (A.J.); (J.J.); (M.P.)
| | - Jelena Kovačić
- Institute for Medical Research and Occupational Health, 10000 Zagreb, Croatia; (A.P.); (J.K.); (B.T.L.); (I.B.K.); (T.Ž.S.); (A.S.); (T.O.); (N.B.); (A.J.); (J.J.); (M.P.)
| | - Blanka Tariba Lovaković
- Institute for Medical Research and Occupational Health, 10000 Zagreb, Croatia; (A.P.); (J.K.); (B.T.L.); (I.B.K.); (T.Ž.S.); (A.S.); (T.O.); (N.B.); (A.J.); (J.J.); (M.P.)
| | - Irena Brčić Karačonji
- Institute for Medical Research and Occupational Health, 10000 Zagreb, Croatia; (A.P.); (J.K.); (B.T.L.); (I.B.K.); (T.Ž.S.); (A.S.); (T.O.); (N.B.); (A.J.); (J.J.); (M.P.)
| | - Tanja Živković Semren
- Institute for Medical Research and Occupational Health, 10000 Zagreb, Croatia; (A.P.); (J.K.); (B.T.L.); (I.B.K.); (T.Ž.S.); (A.S.); (T.O.); (N.B.); (A.J.); (J.J.); (M.P.)
| | - Ankica Sekovanić
- Institute for Medical Research and Occupational Health, 10000 Zagreb, Croatia; (A.P.); (J.K.); (B.T.L.); (I.B.K.); (T.Ž.S.); (A.S.); (T.O.); (N.B.); (A.J.); (J.J.); (M.P.)
| | - Tatjana Orct
- Institute for Medical Research and Occupational Health, 10000 Zagreb, Croatia; (A.P.); (J.K.); (B.T.L.); (I.B.K.); (T.Ž.S.); (A.S.); (T.O.); (N.B.); (A.J.); (J.J.); (M.P.)
| | | | - Nataša Brajenović
- Institute for Medical Research and Occupational Health, 10000 Zagreb, Croatia; (A.P.); (J.K.); (B.T.L.); (I.B.K.); (T.Ž.S.); (A.S.); (T.O.); (N.B.); (A.J.); (J.J.); (M.P.)
| | - Andreja Jurič
- Institute for Medical Research and Occupational Health, 10000 Zagreb, Croatia; (A.P.); (J.K.); (B.T.L.); (I.B.K.); (T.Ž.S.); (A.S.); (T.O.); (N.B.); (A.J.); (J.J.); (M.P.)
| | - Iva Miškulin
- University Hospital Centre, 10000 Zagreb, Croatia; (I.M.); (L.Š.)
| | - Lana Škrgatić
- University Hospital Centre, 10000 Zagreb, Croatia; (I.M.); (L.Š.)
| | - Sandra Stasenko
- Merkur University Hospital, 10000 Zagreb, Croatia; (S.S.); (T.M.)
| | - Tatjana Mioč
- Merkur University Hospital, 10000 Zagreb, Croatia; (S.S.); (T.M.)
| | - Jasna Jurasović
- Institute for Medical Research and Occupational Health, 10000 Zagreb, Croatia; (A.P.); (J.K.); (B.T.L.); (I.B.K.); (T.Ž.S.); (A.S.); (T.O.); (N.B.); (A.J.); (J.J.); (M.P.)
| | - Martina Piasek
- Institute for Medical Research and Occupational Health, 10000 Zagreb, Croatia; (A.P.); (J.K.); (B.T.L.); (I.B.K.); (T.Ž.S.); (A.S.); (T.O.); (N.B.); (A.J.); (J.J.); (M.P.)
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94
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Sekovanić A, Piasek M, Orct T, Sulimanec Grgec A, Matek Sarić M, Stasenko S, Jurasović J. Mercury Exposure Assessment in Mother-Infant Pairs from Continental and Coastal Croatia. Biomolecules 2020; 10:biom10060821. [PMID: 32471193 PMCID: PMC7355586 DOI: 10.3390/biom10060821] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 05/20/2020] [Accepted: 05/21/2020] [Indexed: 12/31/2022] Open
Abstract
The main source of mercury (Hg) exposure in the general population is fish. Another possible source is dental amalgam. Here, we compare the levels of Hg and selenium (Se) in samples of maternal and fetal origin collected shortly after childbirth of healthy postpartum women in the coastal (n = 96) and continental (n = 185) areas of Croatia related to maternal seafood/fish consumption. We also evaluated Hg concentrations and maternal serum metallothionein (MT2) concentrations in relation to the number of dental amalgam fillings, and MT2A-5A/G (rs28366003) polymorphism. The levels of Hg and Se in maternal hair and blood/serum, placenta and cord blood/serum increased in relation to increasing fish consumption with the highest values in subjects from the coast. The concentrations of each element and between elements correlated across the matrices. Increasing amalgam number correlated linearly with increased Hg levels in maternal and cord serum and was not associated with serum MT2. No association of MT2A-5A/G polymorphism and Hg or Se levels were found. The results confirmed higher fish consumption in coastal vs. continental Croatia and increases of both Hg and Se related to fish consumption in all analyzed samples. Increased blood Hg reflected the predominant MeHg share from seafood, while increased serum Hg matched exposure from dental amalgams.
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Affiliation(s)
- Ankica Sekovanić
- Institute for Medical Research and Occupational Health, 10000 Zagreb, Croatia; (A.S.); (T.O.); (A.S.G.); (J.J.)
| | - Martina Piasek
- Institute for Medical Research and Occupational Health, 10000 Zagreb, Croatia; (A.S.); (T.O.); (A.S.G.); (J.J.)
- Correspondence:
| | - Tatjana Orct
- Institute for Medical Research and Occupational Health, 10000 Zagreb, Croatia; (A.S.); (T.O.); (A.S.G.); (J.J.)
| | - Antonija Sulimanec Grgec
- Institute for Medical Research and Occupational Health, 10000 Zagreb, Croatia; (A.S.); (T.O.); (A.S.G.); (J.J.)
| | | | - Sandra Stasenko
- Clinical Department of Obstetrics and Gynecology, Merkur University Hospital, 10000 Zagreb, Croatia;
| | - Jasna Jurasović
- Institute for Medical Research and Occupational Health, 10000 Zagreb, Croatia; (A.S.); (T.O.); (A.S.G.); (J.J.)
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95
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Wai KM, Umezaki M, Umemura M, Mar O, Watanabe C. Protective role of selenium in the shortening of telomere length in newborns induced by in utero heavy metal exposure. ENVIRONMENTAL RESEARCH 2020; 183:109202. [PMID: 32045728 DOI: 10.1016/j.envres.2020.109202] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 01/29/2020] [Accepted: 01/29/2020] [Indexed: 05/15/2023]
Abstract
The effects of toxic heavy metals, such as arsenic (As), cadmium (Cd), and lead (Pb), on telomere length (TL) have been reported previously. Although selenium (Se) is considered as an anti-oxidant which may detoxify the effects, there are no data on whether Se could protect against the TL-shortening effects of heavy metals. Thus, the aim of this study was to evaluate the protective role of Se against heavy metal-induced TL shortening. A birth cohort study was conducted in Myanmar in 2016, including 408 mother-infant pairs. First, pregnant women in the third trimester were interviewed concerning their socioeconomic, and pregnancy and birth characteristics using a pre-validated questionnaire. Maternal spot urine samples were collected after the interview. During the follow-up period (1-3 months), blood samples were collected from the umbilical cord at birth by local health workers. Metal concentrations were measured using inductively coupled plasma mass spectrometry (ICP-MS). TL was measured by quantitative real-time polymerase chain reaction (PCR). Relative TL was calculated as the ratio of telomere genes to single-copy genes. To evaluate the effect of Se on TL shortening, molar ratios were calculated. Linear regression analyses were performed to examine the associations between heavy metals and TL, individually and after adjustment for Se level. The effects of As, Cd, and Pb exposure on TL were smaller after adjustment for the Se level, especially for Pb (unadjusted β = -0.10; 95% CI: 0.18, -0.01; adjusted β = -0.03; 95% CI: 0.13, 0.05). On stratifying the data by Se concentration, there was no significant association between Cd or Pb exposure and TL in the high-Se group. Our study indicated a protective effect of Se against the TL shortening induced by heavy metal exposure, where the effect sizes were smaller after adjusting for the Se level, compared to individual metal exposure.
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Affiliation(s)
- Kyi Mar Wai
- Department of Mibyo Science, Graduate School of Medicine, Hirosaki University, Japan; Department of Human Ecology, School of International Health, Graduate School of Medicine, The University of Tokyo, Japan.
| | - Masahiro Umezaki
- Department of Human Ecology, School of International Health, Graduate School of Medicine, The University of Tokyo, Japan
| | - Mitsutoshi Umemura
- Hokkaido Research Center, Forestry and Forest Products Research Institute, Forest Research and Management Organization, Sapporo, Japan
| | - Ohn Mar
- Department of Physiology, The University of Medicine (1), Yangon, Myanmar
| | - Chiho Watanabe
- Department of Human Ecology, School of International Health, Graduate School of Medicine, The University of Tokyo, Japan; National Institute for Environmental Studies, Tsukuba, Japan
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96
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Kim SS, Xu X, Zhang Y, Zheng X, Liu R, Dietrich KN, Reponen T, Xie C, Sucharew H, Huo X, Chen A. Birth outcomes associated with maternal exposure to metals from informal electronic waste recycling in Guiyu, China. ENVIRONMENT INTERNATIONAL 2020; 137:105580. [PMID: 32078870 PMCID: PMC7257595 DOI: 10.1016/j.envint.2020.105580] [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: 10/10/2019] [Revised: 02/10/2020] [Accepted: 02/12/2020] [Indexed: 02/05/2023]
Abstract
BACKGROUND Informal electronic waste (e-waste) recycling is a rapidly growing industry. Informal e-waste recycling creates a mixture of chemicals that can be harmful to humans, especially vulnerable populations like pregnant women and young children. OBJECTIVES We aimed to analyze the associations between birth outcomes and living in a community with a history of informal e-waste recycling. METHODS The e-waste Recycling Exposure and Community Health (e-REACH) Study enrolled pregnant women in Guiyu, an informal e-waste recycling site (n = 314), and an unexposed control site (Haojiang) (n = 320) at delivery. We analyzed maternal whole blood samples for lead (Pb), cadmium (Cd), chromium (Cr), and manganese (Mn). We captured data in newborns on birth weight, birth length, head circumference, body mass index (BMI), and Ponderal Index (PI). We compared the birth outcomes between sites after adjustment for covariates, and examined the associations with individual and the mixture of metals. RESULTS The neonates from Guiyu had smaller head circumference (adj β -1.96 cm, 95% CI -2.39, -1.52), BMI (adj β -0.77 kg/m2, 95% CI -1.03, -0.51), and PI (adj β -2.01 kg/m3, 95% CI -2.54, -1.47). Birth weights were lower in Guiyu compared to Haojiang, but the difference was not significant (β -51, 95% CI -132, 29). Cumulative exposure to metals was related to lower head circumference, BMI, and PI, but not related to birth weight. DISCUSSION We observed slight and statistically significant differences in the head size, BMI, and PI of neonates, but not birth weight, from Guiyu when compared to neonates from Haojiang. Cumulative metal exposure may partially account for the findings.
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Affiliation(s)
- Stephani S Kim
- Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Xijin Xu
- Laboratory of Environmental Medicine and Developmental Toxicology, Provincial Key Laboratory of Infectious Disease and Immunopathology, Shantou University Medical College, Shantou, Guangdong, China
| | - Yuling Zhang
- Laboratory of Environmental Medicine and Developmental Toxicology, Provincial Key Laboratory of Infectious Disease and Immunopathology, Shantou University Medical College, Shantou, Guangdong, China
| | - Xiangbin Zheng
- Laboratory of Environmental Medicine and Developmental Toxicology, Provincial Key Laboratory of Infectious Disease and Immunopathology, Shantou University Medical College, Shantou, Guangdong, China
| | - Rongju Liu
- Laboratory of Environmental Medicine and Developmental Toxicology, Provincial Key Laboratory of Infectious Disease and Immunopathology, Shantou University Medical College, Shantou, Guangdong, China
| | - Kim N Dietrich
- Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Tiina Reponen
- Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Changchun Xie
- Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Heidi Sucharew
- Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Xia Huo
- Laboratory of Environmental Medicine and Developmental Toxicology, Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou, Guangdong, China.
| | - Aimin Chen
- Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
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97
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Taylor CM, Doerner R, Northstone K, Kordas K. Maternal Diet During Pregnancy and Blood Cadmium Concentrations in an Observational Cohort of British Women. Nutrients 2020; 12:nu12040904. [PMID: 32224907 PMCID: PMC7230298 DOI: 10.3390/nu12040904] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 03/19/2020] [Accepted: 03/21/2020] [Indexed: 11/30/2022] Open
Abstract
Few studies have investigated the extent to which diet predicts body Cd concentrations among women of reproductive age, and pregnant women in particular. The aim of this study was to examine diet as a predictor of blood Cd concentrations in pregnant women participating in the UK Avon Longitudinal Study of Parents and Children (ALSPAC). Whole blood samples were analysed for Cd (median 0.26 (IQR 0.14–0.54) µg/L). Dietary pattern scores were derived from principal components analysis of data from a food frequency questionnaire. Associations between dietary pattern scores and foods/food groups with blood Cd ≥ median value were identified using adjusted logistic regression (n = 2169 complete cases). A health conscious dietary pattern was associated with a reduced likelihood of B-Cd ≥0.26 µg/l (OR 0.56 (95% CI 0.39–0.81)). There were similarly reduced likelihoods for all leafy green and green vegetables (0.72 (0.56–0.92) when consumed ≥4 times/week vs ≤1 to ≥3 times/week) and with all meats (0.66 (0.46–0.95) when consumed ≥4 times/week vs ≤ once in 2 weeks). Sensitivity analysis excluding smokers showed similar results. The evidence from this study provides continued support for a healthy and varied diet in pregnancy, incorporating foods from all food groups in accordance with national recommendations, without the need for specific guidance.
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Affiliation(s)
- Caroline M. Taylor
- Centre for Academic Child Health, Bristol Medical School, University of Bristol, 1–5 Whiteladies Road, Bristol BS8 2NU, UK
- Correspondence: ; Tel.: +44(0)117-428-3099
| | - Rita Doerner
- Population Health Sciences, Bristol Medical School, University of Bristol, Oakfield Grove, Bristol BS8 2BN, UK; (R.D.); (K.N.)
| | - Kate Northstone
- Population Health Sciences, Bristol Medical School, University of Bristol, Oakfield Grove, Bristol BS8 2BN, UK; (R.D.); (K.N.)
| | - Katarzyna Kordas
- Department of Epidemiology and Environmental Health, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY 14214, USA;
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98
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Shah-Kulkarni S, Lee S, Jeong KS, Hong YC, Park H, Ha M, Kim Y, Ha EH. Prenatal exposure to mixtures of heavy metals and neurodevelopment in infants at 6 months. ENVIRONMENTAL RESEARCH 2020; 182:109122. [PMID: 32069757 DOI: 10.1016/j.envres.2020.109122] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 01/06/2020] [Accepted: 01/06/2020] [Indexed: 06/10/2023]
Abstract
BACKGROUND Exposure to mixture of neurotoxic metals such as lead, mercury and cadmium occurs at a specific point of time. When exposed to metal mixtures, one metal may act as an agonist or antagonist to another metal. Thus, it is important to study the effects of exposure to a combination of metals on children's development using advance statistical methods. OBJECTIVES In this study, we explored the effects of prenatal metal exposure including lead, mercury and cadmium in early pregnancy (12-20 weeks), late pregnancy (>28 weeks), and at birth on neurodevelopment of infants at 6 months of age. METHODS We included 523 eligible mother-child pairs from the mothers and children environmental health (MOCEH) study, a prospective birth cohort study in Korea. We used linear regression, Bayesian kernel machine regression (BKMR) and generalized additive models (GAM), to evaluate the effects of exposure to metal mixtures on neurodevelopment of infants aged 6 months. The Korean version of Bayley scale of infant and toddler development-II was used to measure the child's neurodevelopment. RESULTS Linear regression models showed a significant negative effect of lead exposure during late pregnancy on the mental development index (MDI) [β = -2.51 (-4.92, -0.10)] scores of infants aged 6 months following co-exposure to mercury. Further, linear regression analysis showed a significant interaction between late pregnancy lead and mercury concentrations. BKMR analysis showed similar results as those obtained in linear regression models. These results were also replicated in the GAM. Stratification analysis showed that greater than 50 percentile concentration of mercury in late pregnancy potentiated the adverse effects of lead in late pregnancy on MDI [β = -4.33 (-7.66, -1.00)] and psychomotor development index (PDI) [β = -5.30 (-9.13, -1.46)] at 6 months of age. Prenatal cadmium exposure did not show a significant association with MDI and PDI at 6 months in the linear regression or BKMR analysis. CONCLUSION Based on all the statistical methods used, we demonstrated the effect of combined exposure to metals on the neurodevelopment of infants aged 6 months, with significant interaction between lead and mercury.
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Affiliation(s)
- Surabhi Shah-Kulkarni
- Department of Occupational and Environmental Medicine, Ewha Womans University College of Medicine, Seoul, Republic of Korea
| | - Seulbi Lee
- Department of Occupational and Environmental Medicine, Ewha Womans University College of Medicine, Seoul, Republic of Korea
| | - Kyoung Sook Jeong
- Department of Occupational and Environmental Medicine, Hallym University Sacred Heart Hospital, Gyeonggido, Republic of Korea
| | - Yun-Chul Hong
- Department of Preventive Medicine, College of Medicine, Seoul National University, Seoul, Republic of Korea
| | - Hyesook Park
- Department of Preventive Medicine, Ewha Womans University College of Medicine, Seoul, Republic of Korea
| | - Mina Ha
- Department of Preventive Medicine, Dankook University College of Medicine, Cheonan, Republic of Korea
| | - Yangho Kim
- Department of Occupational and Environmental Medicine, University of Ulsan College of Medicine, Ulsan University Hospital, Ulsan, Republic of Korea
| | - Eun-Hee Ha
- Department of Occupational and Environmental Medicine, Ewha Womans University College of Medicine, Seoul, Republic of Korea.
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99
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Rager JE, Bangma J, Carberry C, Chao A, Grossman J, Lu K, Manuck TA, Sobus JR, Szilagyi J, Fry RC. Review of the environmental prenatal exposome and its relationship to maternal and fetal health. Reprod Toxicol 2020; 98:1-12. [PMID: 32061676 DOI: 10.1016/j.reprotox.2020.02.004] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Revised: 12/05/2019] [Accepted: 02/07/2020] [Indexed: 12/12/2022]
Abstract
Environmental chemicals comprise a major portion of the human exposome, with some shown to impact the health of susceptible populations, including pregnant women and developing fetuses. The placenta and cord blood serve as important biological windows into the maternal and fetal environments. In this article we review how environmental chemicals (defined here to include man-made chemicals [e.g., flame retardants, pesticides/herbicides, per- and polyfluoroalkyl substances], toxins, metals, and other xenobiotic compounds) contribute to the prenatal exposome and highlight future directions to advance this research field. Our findings from a survey of recent literature indicate the need to better understand the breadth of environmental chemicals that reach the placenta and cord blood, as well as the linkages between prenatal exposures, mechanisms of toxicity, and subsequent health outcomes. Research efforts tailored towards addressing these needs will provide a more comprehensive understanding of how environmental chemicals impact maternal and fetal health.
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Affiliation(s)
- Julia E Rager
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; The Institute for Environmental Health Solutions, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Curriculum in Toxicology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
| | - Jacqueline Bangma
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Celeste Carberry
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Alex Chao
- Oak Ridge Institute for Science and Education (ORISE) Participant, Research Triangle Park, NC, USA
| | | | - Kun Lu
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Curriculum in Toxicology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Tracy A Manuck
- The Institute for Environmental Health Solutions, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Department of Obstetrics and Gynecology, Division of Maternal Fetal Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Jon R Sobus
- U.S. Environmental Protection Agency, Office of Research and Development, National Exposure Research Laboratory, Research Triangle Park, NC, USA
| | - John Szilagyi
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Rebecca C Fry
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; The Institute for Environmental Health Solutions, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Curriculum in Toxicology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
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100
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Dórea JG, Fenton SE. Estimating risk of neurotoxicity from early life exposure: Human milk is an appropriate matrix, but messages should not discourage breastfeeding. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 693:133665. [PMID: 31634993 DOI: 10.1016/j.scitotenv.2019.133665] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 07/08/2019] [Accepted: 07/28/2019] [Indexed: 06/10/2023]
Affiliation(s)
- José G Dórea
- Faculty of Health Sciences, Universidade de Brasilia, 70919-970 Brasilia, DF, Brazil.
| | - Suzanne E Fenton
- Division of the National Toxicology Program (DNTP), NTP Laboratory, National Institute of Environmental Health Sciences (NIEHS), National Institute of Health (NIH), Research Triangle Park, NC 27709, USA
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