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Ikeda A, Marsela M, Miyashita C, Yamaguchi T, Saijo Y, Ito Y, Iwata H, Itoh S, Itoh M, Yamazaki K, Tamura N, Kobayashi S, Kishi R. Heavy metals and trace elements in maternal blood and prevalence of congenital limb abnormalities among newborns: the Japan Environment and Children's Study. Environ Health Prev Med 2024; 29:36. [PMID: 39048352 PMCID: PMC11273044 DOI: 10.1265/ehpm.23-00366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 06/16/2024] [Indexed: 07/27/2024] Open
Abstract
BACKGROUND Heavy metals such as lead (Pb) and cadmium (Cd) have been associated with adverse pregnancy and developmental outcomes, including congenital abnormalities. This study investigated the association between exposure to heavy metals and trace elements during fetal life and congenital limb abnormalities in infants. METHODS This study is based on a prospective ongoing nationwide birth cohort from the Japan Environment and Children's Study (JECS). The concentrations of Cd, Pb, mercury (Hg), selenium (Se), and manganese (Mn) were measured in maternal blood collected during the mid-late trimesters. Inclusion criteria were available from questionnaires filled in during pregnancy, including information about congenital limb abnormalities at birth or at one month. To examine the associations with limb anomalies and individual chemicals, logistic regression models were applied following log-transformation or division into quartiles of Cd, Pb, Hg, Se, and Mn concentrations. To assess the associations with the heavy metals and trace elements mixture, quantile g-computation was employed. All models were adjusted for age, maternal smoking history, maternal alcohol intake, history of smoking, and infant sex. RESULTS Data from 90,163 participants were included in the analysis, of whom 369 had congenital limb abnormalities in any of the collected information, and 89,794 had none. Among the 369 cases of congenital limb abnormalities, there were 185 and 142 cases of polydactyly and syndactyly, respectively. The median concentrations of Pb, Cd, Hg, Se, and Mn were 5.85, 0.66, 3.64, 168, and 15.3 ng/g, respectively. There were no associations between maternal blood concentrations of Pb [adjusted odd ratio = 0.83; 95% confidence interval = 0.61, 1.11], Cd [0.87; 0.68, 1.10], Hg [0.88; 0.73, 1.07], Se [1.07; 0.44, 2.59], and Mn [0.91; 0.64, 1.30] with congenital limb abnormalities. No significant association was observed between the mixture of heavy metals and trace elements [0.85; 0.72, 1.02] and any congenital limb abnormalities. Moreover, there was no association with all polydactylies and all syndactylies, or any type of abnormality as a subdivision. CONCLUSION At the maternal exposure levels of Cd, Pb, Hg, Se, and Mn assessed in the present study, no association was identified with the risk of developing congenital limb abnormalities in children.
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Affiliation(s)
- Atsuko Ikeda
- Faculty of Health Sciences, Hokkaido University, Sapporo, Japan
- Center for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan
| | | | - Chihiro Miyashita
- Center for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan
| | - Takeshi Yamaguchi
- Center for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan
| | - Yasuaki Saijo
- Department of Social Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Yoshiya Ito
- Faculty of Nursing, Japanese Red Cross Hokkaido College of Nursing, Kitami, Japan
| | - Hiroyoshi Iwata
- Center for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan
| | - Sachiko Itoh
- Center for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan
| | - Mariko Itoh
- Center for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan
| | - Keiko Yamazaki
- Center for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan
| | - Naomi Tamura
- Center for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan
| | - Sumitaka Kobayashi
- Center for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan
- Division of Epidemiological Research for Chemical Disorders, Research Center for Chemical Information and Management, National Institute of Occupational Safety and Health, Kawasaki, Japan
| | - Reiko Kishi
- Center for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan
| | - the Japan Environment and Children’s Study Group
- Faculty of Health Sciences, Hokkaido University, Sapporo, Japan
- Center for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan
- Department of Social Medicine, Asahikawa Medical University, Asahikawa, Japan
- Faculty of Nursing, Japanese Red Cross Hokkaido College of Nursing, Kitami, Japan
- Division of Epidemiological Research for Chemical Disorders, Research Center for Chemical Information and Management, National Institute of Occupational Safety and Health, Kawasaki, Japan
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Rowe CL, Heyes A. Dietary Accumulation of Inorganic Selenium by a Larval Amphibian (Hyla chrysoscelis) and Influence on Accumulation of Background Mercury. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2017; 99:182-186. [PMID: 28409193 DOI: 10.1007/s00128-017-2087-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 04/07/2017] [Indexed: 06/07/2023]
Abstract
Larval gray tree frogs (Hyla chrysoscelis) were exposed to inorganic Se (SeO2) added to the diet (10.2 and 86.3 ug/g dw) and monitored for accumulation and effect. Background concentrations of Hg were also measured in food and carcasses to assess possible effects of Se on Hg accumulation. Selenium was accumulated in a dose dependent manner, and life stages did not differ. No effects of Se exposure were observed on survival, growth, or time to metamorphosis. Mercury concentrations in carcasses, resulting from background concentrations in food, were significantly affected by the presence of Se. In the high Se treatment, Hg concentrations were significantly decreased relative to those in the low Se treatment and the control. Our study suggests that exposure to inorganic Se as SeO2 at the concentrations tested do not elicit adverse biological effects, but exposure to relatively high concentrations of Se may reduce accumulation of Hg from food.
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Affiliation(s)
- Christopher L Rowe
- University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory, P. O. Box 38, Solomons, MD, 20688, USA.
| | - Andrew Heyes
- University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory, P. O. Box 38, Solomons, MD, 20688, USA
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Lanctôt CM, Cresswell T, Callaghan PD, Melvin SD. Bioaccumulation and Biodistribution of Selenium in Metamorphosing Tadpoles. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:5764-5773. [PMID: 28423270 DOI: 10.1021/acs.est.7b00300] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Selenium is an important macronutrient with a very narrow margin between essentiality and toxicity. Amphibians are hypothesized to be particularly sensitive due to the potential for metamorphosis-driven mobilization, which could transfer or concentrate contaminant burdens within specific organs. We explored the potential role of tissue degeneration and remodeling during anuran metamorphosis as a mechanism for altering tissue-specific Se burdens. Limnodynastes peronii tadpoles were exposed to dissolved 75Se (as selenite) for 7 days and depurated until completion of metamorphosis. Bioaccumulation and retention kinetics were assessed in whole tadpoles and excised tissues using gamma spectroscopy, and temporal changes in biodistribution were assessed using autoradiography. Tadpoles retained Se throughout metamorphosis, and partitioned the element predominantly within digestive and excretory tissues, including livers > mesonephros > guts > gallbladder. Importantly, our results demonstrate that Se biodistribution varies significantly throughout development. This is indicative of tissue transference, and particularly in tissues developing de novo after depuration. To the best of our knowledge, this is the first study demonstrating Se transference during metamorphic tissue remodelling. Further research is warranted to explore the fate and metabolism of Se (and other metal and metalloids) during anuran development and the implications of transference for influencing toxicity.
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Affiliation(s)
- Chantal M Lanctôt
- Australian Rivers Institute, School of Environment, Griffith University , Southport, Queensland 4215, Australia
| | - Tom Cresswell
- Australian Nuclear Science and Technology Organisation (ANSTO) , Locked Bag 2001, Kirrawee DC, New South Wales 2232, Australia
| | - Paul D Callaghan
- Australian Nuclear Science and Technology Organisation (ANSTO) , Locked Bag 2001, Kirrawee DC, New South Wales 2232, Australia
| | - Steven D Melvin
- Australian Rivers Institute, School of Environment, Griffith University , Southport, Queensland 4215, Australia
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Massé AJ, Muscatello JR, Janz DM. Effects of Elevated In Ovo Selenium Exposure on Late Stage Development of Xenopus laevis Tadpoles. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2016; 97:463-468. [PMID: 27412338 DOI: 10.1007/s00128-016-1884-6] [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: 04/19/2016] [Accepted: 07/04/2016] [Indexed: 06/06/2023]
Abstract
The effects of elevated in ovo selenium (Se) exposure on late stage larval Xenopus laevis development were investigated. Adult females were fed diets augmented with selenomethionine for 68 days and bred with untreated males to obtain embryos with measured concentrations of 1.6 (control), 10.8, 28.1 and 81.7 μg Se/g dry mass. Embryos were reared under uncontaminated conditions until 50 % of individuals within an aquarium had completed metamorphosis. The highest in ovo Se exposure group exhibited greater froglet body mass and snout to vent length while having a higher proportion of tadpoles at earlier stages of development. No differences were detected among treatment groups for mortality or metamorphic timing during the rearing period. This research suggests that in ovo Se exposure has minimal effect on the survival and development of late stage larval X. laevis in a controlled laboratory environment with adequate food availability.
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Affiliation(s)
- Anita J Massé
- Toxicology Graduate Program, University of Saskatchewan, Saskatoon, SK, S7N 5B3, Canada
| | | | - David M Janz
- Toxicology Centre, University of Saskatchewan, Saskatoon, SK, S7N 5B3, Canada.
- Department of Veterinary Biomedical Sciences, University of Saskatchewan, Saskatoon, SK, S7N 5B4, Canada.
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Rowe CL. Bioaccumulation and effects of metals and trace elements from aquatic disposal of coal combustion residues: recent advances and recommendations for further study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 485-486:490-496. [PMID: 24742559 DOI: 10.1016/j.scitotenv.2014.03.119] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 03/19/2014] [Accepted: 03/23/2014] [Indexed: 06/03/2023]
Abstract
Advances have been made recently in assessing accumulation and effects of coal combustion residues (CCR). I provide a brief review of recent advancements, provide a tabulated summary of results of recent work, and put forth recommendations for future studies. One advancement is that mercury accumulation has begun to receive (limited) attention, whereas it had rarely been considered in the past. Additionally, some constituents of CCR have been shown to be accumulated by adults and transferred to offspring, sometimes compromising offspring health. Studies have demonstrated that amphibians, possessing complex life cycles, may accumulate and transfer some contaminants to terrestrial systems. Some study has been given to molecular and cellular effects of CCR exposure, although these studies have been limited to invertebrates. Population models have also been applied to CCR affected systems and have shown that CCR may affect animal populations under some conditions. In light of these advancements, there are several topics that require further assessment. First, more attention to Hg and its dynamics in CCR affected systems is warranted. Hg can be highly accumulative and toxic under some conditions and may interact with other components of CCR (notably Se), perhaps altering accumulation and effects of the contaminant mixtures. Second, further investigation of maternal transfer and effects of CCR contaminants need to be conducted. These studies could benefit from incorporation of quantitative models to project impacts on populations. Finally, more attention to the organic constituents of CCR (PAHs) is required, as a focus on inorganic compounds only may restrict our knowledge of contaminant dynamics and effects as a whole. While further studies will shed light on some chemical and biological nuances of exposure and effect, information available to date from numerous study sites implicates CCR as a bulk effluent that presents risks of bioaccumulation and effects on organisms in aquatic systems.
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Affiliation(s)
- Christopher L Rowe
- University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory, P.O. Box 38, Solomons, MD 20688, United States.
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