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Kinjo Y, Shibata E, Askew DJ, Tanaka R, Suga R, Shimono M, Sakuragi T, Morokuma S, Ogawa M, Sanefuji M, Hamada N, Ochiai M, Ohga S, Tsuji M, Kusuhara K, Yoshino K. Association of placental weight at birth with maternal whole blood concentration of heavy metals (cadmium, lead, mercury, selenium, and manganese): The Japan Environment and Children's Study (JECS). Environ Int 2024; 188:108725. [PMID: 38759546 DOI: 10.1016/j.envint.2024.108725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2024] [Revised: 04/16/2024] [Accepted: 05/06/2024] [Indexed: 05/19/2024]
Abstract
BACKGROUND Lifelong health is dependent on prenatal growth and development, influenced by the placental intrauterine environment. Charged with dual functions--exchange of oxygen and nutrients as well as a barrier against toxins--the placenta itself is susceptible to environmental exposure to heavy metals. OBJECTIVE To examine the use of placenta weight as a biomarker for heavy metal exposure using a large Japanese cohort of pregnant women. METHODS The placenta weight, as a biomarker of exposure to heavy metals (cadmium, lead, and mercury), was investigated using data from the Japan Environment and Children's Study (2011-2014). Selenium and manganese were included as factors directly affecting fetal growth or heavy metal toxicity. Maternal blood samples collected in the second or third trimester were used to measure heavy metal concentrations. The association between maternal blood metal concentrations and placenta weight was explored by applying Z scores and multivariable logistic regression analysis and classifying participants into quartiles (Q1, Q2, Q3, and Q4) according to metal concentrations. RESULTS This study included a total of 73,005 singleton pregnant women who delivered via live births and met the inclusion criteria. The median heavy metal concentrations in the maternal whole blood were 0.662 ng/g cadmium, 5.85 ng/g lead, 3.61 ng/g mercury, 168 ng/g selenium, and 15.3 ng/g manganese. Regression analysis revealed a significant correlation between placenta weight Z scores and maternal blood metal concentrations: cadmium, 0.0660 (standard error = 0.0074, p < 0.001); selenium, -0.3137 (standard error = 0.0276, p < 0.001); and manganese, 0.1483 (standard error = 0.0110, p < 0.001). CONCLUSION This study provides a robust examination of the association between heavy metal exposure and placenta weight. Cadmium and manganese showed a positive correlation with significant differences, whereas selenium showed a negative correlation. Essential elements notably affect placenta weight differently. No significant association was noted between lead or mercury and placenta weight.
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Affiliation(s)
- Yasuyuki Kinjo
- Department of Obstetrics and Gynecology, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakushu 807-8555, Japan.
| | - Eiji Shibata
- Department of Obstetrics and Gynecology, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakushu 807-8555, Japan.
| | - David J Askew
- Department of Obstetrics and Gynecology, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakushu 807-8555, Japan.
| | - Rie Tanaka
- Department of Environmental Health, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakushu 807-8555, Japan.
| | - Reiko Suga
- Regional Center for Japan Environment and Children's Study, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakushu, Fukuoka 807-8555, Japan.
| | - Masayuki Shimono
- Regional Center for Japan Environment and Children's Study, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakushu, Fukuoka 807-8555, Japan.
| | - Toshihide Sakuragi
- Department of Obstetrics and Gynecology, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakushu 807-8555, Japan; Department of Environmental Health, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakushu 807-8555, Japan.
| | - Seiichi Morokuma
- Department of Health Sciences, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
| | - Masanobu Ogawa
- Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
| | - Masafumi Sanefuji
- Research Center for Environmental and Developmental Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; Department of Pediatrics, Faculty of Medicine, Saga University, 5-1-1 Nabeshima, Saga 849-8501, Japan.
| | - Norio Hamada
- Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; Research Center for Environmental and Developmental Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
| | - Masayuki Ochiai
- Research Center for Environmental and Developmental Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
| | - Shouichi Ohga
- Research Center for Environmental and Developmental Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
| | - Mayumi Tsuji
- Department of Environmental Health, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakushu 807-8555, Japan; Regional Center for Japan Environment and Children's Study, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakushu, Fukuoka 807-8555, Japan.
| | - Koichi Kusuhara
- Regional Center for Japan Environment and Children's Study, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakushu, Fukuoka 807-8555, Japan; Department of Pediatrics, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakushu 807-8555, Japan.
| | - Kiyoshi Yoshino
- Department of Obstetrics and Gynecology, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakushu 807-8555, Japan; Regional Center for Japan Environment and Children's Study, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakushu, Fukuoka 807-8555, Japan.
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Yanai T, Yoshida S, Takeuchi M, Kawakami C, Kawakami K, Ito S. Association between maternal heavy metal exposure and Kawasaki Disease, the Japan Environment and Children's Study (JECS). Sci Rep 2024; 14:9947. [PMID: 38689029 PMCID: PMC11061304 DOI: 10.1038/s41598-024-60830-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 04/27/2024] [Indexed: 05/02/2024] Open
Abstract
Kawasaki disease (KD) is an acute systemic vasculitis primarily affecting young children, with an unclear etiology. We investigated the link between maternal heavy metal exposure and KD incidence in children using the Japan Environment and Children's Study, a large-scale nationwide prospective cohort with approximately 100,000 mother-child pairs. Maternal blood samples collected during the second/third trimester were analyzed for heavy metals [mercury (Hg), cadmium (Cd), lead (Pb), selenium (Se), manganese (Mn)], divided into four quartiles based on concentration levels. KD incidence within the first year of life was tracked via questionnaire. Among 85,378 mother-child pairs, 316 children (0.37%) under one year were diagnosed with KD. Compared with the lowest concentration group (Q1), the highest (Q4) showed odds ratios (95% confidence interval) for Hg, 1.29 (0.82-2.03); Cd, 0.99 (0.63-1.58); Pb, 0.84 (0.52-1.34); Se, 1.17 (0.70-1.94); Mn, 0.70 (0.44-1.11), indicating no concentration-dependent increase. Sensitivity analyses with logarithmic transformation and extended outcomes up to age 3 yielded similar results. No significant association was found between maternal heavy metal levels and KD incidence, suggesting that heavy metal exposure does not increase KD risk.
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Affiliation(s)
- Takanori Yanai
- Department of Pharmacoepidemiology, Kyoto University Graduate School of Medicine and Public Health, Yoshida-Konoecho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Satomi Yoshida
- Department of Pharmacoepidemiology, Kyoto University Graduate School of Medicine and Public Health, Yoshida-Konoecho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Masato Takeuchi
- Department of Pharmacoepidemiology, Kyoto University Graduate School of Medicine and Public Health, Yoshida-Konoecho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Chihiro Kawakami
- Kanagawa Regional Center for JECS, Yokohama City University Graduate School of Medicine, 3-9 Fuku-ura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Koji Kawakami
- Department of Pharmacoepidemiology, Kyoto University Graduate School of Medicine and Public Health, Yoshida-Konoecho, Sakyo-ku, Kyoto, 606-8501, Japan.
| | - Shuichi Ito
- Kanagawa Regional Center for JECS, Yokohama City University Graduate School of Medicine, 3-9 Fuku-ura, Kanazawa-ku, Yokohama, 236-0004, Japan
- Department of Pediatrics, Yokohama City University Graduate School of Medicine, 3-9 Fuku-ura, Kanazawa-ku, Yokohama, 236-0004, Japan
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Luo Y, Zhang H, Gui F, Fang J, Lin H, Qiu D, Ge L, Wang Q, Xu P, Tang J. Concentrations and influencing factors of 17 elements in placenta, cord blood, and maternal blood of women from an e-waste recycling area. J Trace Elem Med Biol 2024; 84:127449. [PMID: 38640746 DOI: 10.1016/j.jtemb.2024.127449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 02/16/2024] [Accepted: 04/06/2024] [Indexed: 04/21/2024]
Abstract
BACKGROUND The effects of prenatal element exposure on mothers and fetuses have generated concern. Profiles of trace and toxic elements in biological material are urgently desired, especially for women who reside near e-waste recycling facilities. The aim of this study was to investigate elements concentrations in placenta, cord blood, and maternal blood of women and to evaluate the influencing factors. METHODS A group of 48 women from an e-waste recycling site and a group of 31 women from a non-e-waste recycling site were recruited. Basic characteristics were collected by questionnaire and the concentrations of 17 elements in placenta, cord blood, and maternal blood samples were analyzed by inductively coupled plasma mass spectrometry (ICP-MS). Finally, the generalized linear model regression analysis (GLM) was used to test the association between element concentrations and possible factors. RESULTS Compared to the control group, the exposed group had significantly elevated cadmium (Cd), zinc (Zn), nickel (Ni), and antimony (Sb) in placenta, and higher lead (Pb) in maternal blood and cord blood (P<0.05). Sb concentration in maternal blood was significantly lower than in the control group (P<0.05). GLM analysis showed that element concentrations were mainly associated with maternal age [chromium (Cr), iron (Fe), selenium (Se), cobalt (Co), mercury (Hg) in placenta, copper (Cu) in maternal blood], education (Se, Sb in placenta), family income (Cu in maternal blood and Ni in placenta), passive smoking [Cu and Zn in placenta, Pb in maternal blood], and e-waste contact history (Hg in cord blood, Cu, Zn, and Cd in maternal blood). CONCLUSIONS Women in the e-waste recycling area had higher toxic element levels in the placenta and blood samples. More preventive measures were needed to reduce the risk of element exposure for mothers and fetuses in these areas.
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Affiliation(s)
- Yacui Luo
- Taizhou Municipal Center for Disease Control and Prevention, 608 Donghai Road, Jiaojiang District, Taizhou 318000, China
| | - Haijun Zhang
- Taizhou Municipal Center for Disease Control and Prevention, 608 Donghai Road, Jiaojiang District, Taizhou 318000, China
| | - Fangzhong Gui
- Taizhou Municipal Center for Disease Control and Prevention, 608 Donghai Road, Jiaojiang District, Taizhou 318000, China
| | - Jiayang Fang
- Taizhou Municipal Center for Disease Control and Prevention, 608 Donghai Road, Jiaojiang District, Taizhou 318000, China
| | - Haijiang Lin
- Taizhou Municipal Center for Disease Control and Prevention, 608 Donghai Road, Jiaojiang District, Taizhou 318000, China
| | - Danhong Qiu
- Taizhou Municipal Center for Disease Control and Prevention, 608 Donghai Road, Jiaojiang District, Taizhou 318000, China
| | - Lingfei Ge
- Luqiao School District, Taizhou Hospital, No.1 east of Tongyang Road, Luqiao District, Taizhou 318050, China
| | - Qiong Wang
- Luqiao Hospital of Traditional Chinese Medicine, No. 88 Yingbin Avenue, Luqiao District, Taizhou 318050, China
| | - Peiwei Xu
- Zhejiang Provincial Center for Disease Control and Prevention, 3399 Binsheng Road, Binjiang District, Hangzhou 310051, China
| | - Jun Tang
- Zhejiang Provincial Center for Disease Control and Prevention, 3399 Binsheng Road, Binjiang District, Hangzhou 310051, China.
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Sewberath Misser VH, Hindori-Mohangoo AD, Shankar A, Lichtveld M, Wickliffe J, Mans DRA. Possible Risk Factors and Their Potential Associations with Combined Heavy Metal Exposures in Pregnant Women in the Republic of Suriname. Ann Glob Health 2024; 90:30. [PMID: 38618276 PMCID: PMC11011959 DOI: 10.5334/aogh.4402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 03/08/2024] [Indexed: 04/16/2024] Open
Abstract
Background The exposure of pregnant women to multiple environmental pollutants may be more disadvantageous to birth outcomes when compared to single-compound contaminations. Objective This study investigated the mixed exposures to mercury, manganese, or lead in 380 pregnant Surinamese women. The factors that might be associated with the heavy metal exposures and the relative risk of the potential factors to cause the mixed exposures were explored. The influencing factors of exposures to mixed contaminants assessed were living in Suriname's rural regions, several parts of which are contaminated with heavy metals emitted from artisanal and small-scale gold mining and agricultural activities; the consumption of potentially contaminated foods; advanced maternal age; as well as a relatively low formal educational level and monthly household income. Methods Descriptive statistics were used to calculate frequency distributions and χ2-contingency analyses to calculate associations and relative risks (RR) with 95% confidence intervals (CI). Findings Blood levels of two or three of the heavy metals above public health limits were observed in 36% of the women. These women were more often residing in the rural regions, primarily consumed potentially contaminated food items, were 35 years or older, were lower educated, and more often had a lower household income. However, only living in the rural regions (RR = 1.48; 95% CI 1.23-1.77) and a low household income (RR = 1.38; 95% CI 1.15-1.66) significantly increased the risk of exposure exceeding levels of concern to two or three of the heavy metals (by 48% and 38%, respectively). Conclusion More comprehensive pharmacological, ecological, and epidemiological studies about exposures to mixed heavy metal contaminations in pregnant women are warranted.
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Affiliation(s)
- Vinoj H. Sewberath Misser
- Department of Pharmacology, Faculty of Medical Sciences, Anton de Kom University of Suriname, Paramaribo, Suriname
| | | | - Arti Shankar
- Tulane University School of Public Health and Tropical Medicine, New Orleans (LA), USA
| | - Maureen Lichtveld
- School of Public Health, University of Pittsburgh, Pittsburgh (PA), USA
| | - Jeffrey Wickliffe
- Department of Environmental Health Sciences, School of Public Health, University of Alabama at Birmingham, Alabama (AL), USA
| | - Dennis R. A. Mans
- Department of Pharmacology, Faculty of Medical Sciences, Anton de Kom University of Suriname, Paramaribo, Suriname
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Guo X, Xu J, Tian Y, Ouyang F, Yu X, Liu J, Yan C, Zhang J. Interaction of prenatal maternal selenium and manganese levels on child neurodevelopmental trajectories-the Shanghai birth cohort study. Sci Total Environ 2024; 915:170095. [PMID: 38224892 DOI: 10.1016/j.scitotenv.2024.170095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 01/09/2024] [Accepted: 01/09/2024] [Indexed: 01/17/2024]
Abstract
OBJECTIVE The fetal brain is particularly plastic, and may be concurrently affected by chemical exposure and malnutritional factors. Selenium is essential for the developing brain, and excess manganese exposure may exert neurotoxic effects. However, few epidemiological studies have evaluated the interaction of manganese and selenium assessed in different prenatal stages on postnatal neurodevelopmental trajectories. METHODS This study contained 1024 mother-child pairs in the Shanghai-birth-cohort study from 2013 to 2016 recruited since early/before pregnancy with complete data on manganese and selenium levels in different prenatal stages and infant neurodevelopmental trajectories. Whole blood manganese and selenium in early pregnancy and around birth were measured by inductively-coupled-plasma-mass-spectrometry (ICP-MS), children's cognitive development was evaluated at 6, 12, and 24 months of age using Age & Stage-Questionnaire (ASQ)-3 and Bayley-III. Multiple linear regression was used to investigate the interaction of prenatal selenium and manganese on neurodevelopmental trajectories. RESULTS The prenatal manganese and selenium levels were 1.82 ± 0.98 μg/dL and 13.53 ± 2.70 μg/dL for maternal blood in early pregnancy, and 5.06 ± 1.67 μg/dL and 11.81 ± 3.35 μg/dL for umbilical cord blood, respectively. Higher prenatal Se levels were associated with better neurocognitive performances or the consistently-high-level trajectory (P < 0.05), with more significant associations observed in early pregnancy than around birth. However, such positive relationships became non-significant or even adverse in high (vs. low) manganese status, and the effect differences between low and high manganese were more significant in early pregnancy. CONCLUSIONS Prenatal Selenium was positively associated with child neurodevelopment, but prenatal high manganese may mitigate such favorable effects. The effects were mainly observed in earlier prenatal stage.
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Affiliation(s)
- Xiangrong Guo
- The International Peace Maternity & Child Health Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Embryo Original Diseases, Shanghai 200030, China
| | - Jian Xu
- The International Peace Maternity & Child Health Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Embryo Original Diseases, Shanghai 200030, China.
| | - Ying Tian
- MOE-Shanghai Key Lab of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China; Department of Environmental Health, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Fengxiu Ouyang
- MOE-Shanghai Key Lab of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Xiaodan Yu
- MOE-Shanghai Key Lab of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China; Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Junxia Liu
- MOE-Shanghai Key Lab of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Chonghuai Yan
- MOE-Shanghai Key Lab of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Jun Zhang
- MOE-Shanghai Key Lab of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
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Takatani T, Takatani R, Eguchi A, Yamamoto M, Sakurai K, Taniguchi Y, Kobayashi Y, Mori C, Kamijima M. Association between maternal blood or cord blood metal concentrations and catch-up growth in children born small for gestational age: an analysis by the Japan environment and children's study. Environ Health 2024; 23:18. [PMID: 38336787 PMCID: PMC10858588 DOI: 10.1186/s12940-024-01061-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 02/04/2024] [Indexed: 02/12/2024]
Abstract
BACKGROUND Catch-up growth issues among children born small for gestational age (SGA) present a substantial public health challenge. Prenatal exposure to heavy metals can cause adverse effects on birth weight. However, comprehensive studies on the accurate assessment of individual blood concentrations of heavy metals and their effect on the failure to achieve catch-up growth remain unavailable. This study aimed to evaluate the effects of uterine exposure to toxic metals cadmium, lead, and mercury and essential trace metals manganese and selenium at low concentrations on the postnatal growth of children born SGA. METHODS Data on newborn birth size and other factors were obtained from the medical record transcripts and self-administered questionnaires of participants in the Japan Environment and Children's Study. The blood concentrations of lead, cadmium, mercury, selenium, and manganese in pregnant women in their second or third trimester were determined by inductively coupled plasma mass spectrometry. These heavy metal concentrations were also assessed in pregnant women's cord blood. Furthermore, the relationship between each heavy metal and height measure/catch-up growth in SGA children aged 4 years was analyzed using linear and logistic regression methods. These models were adjusted for confounders. RESULTS We studied 4683 mother-child pairings from 103,060 pregnancies included in the Japan Environment and Children's Study. Of these, 278 pairs were also analyzed using cord blood. At 3 and 4 years old, 10.7% and 9.0% of children who were born below the 10th percentile of body weight had height standard deviation scores (SDSs) below 2, respectively. Cord blood cadmium concentrations were associated with the inability to catch up in growth by 3 or 4 years old and the height SDS at 3 years old. In maternal blood, only manganese was positively associated with the height SDS of SGA children aged 2 years; however, it was not significantly associated with catch-up growth in these children. CONCLUSION Cadmium exposure is associated with failed catch-up development in SGA children. These new findings could help identify children highly at risk of failing to catch up in growth, and could motivate the elimination of heavy metal (especially cadmium) pollution to improve SGA children's growth.
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Affiliation(s)
- Tomozumi Takatani
- Department of Pediatrics, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan.
| | - Rieko Takatani
- Center for Preventive Medical Sciences, Chiba University, Chiba, 263-8522, Japan
| | - Akifumi Eguchi
- Center for Preventive Medical Sciences, Chiba University, Chiba, 263-8522, Japan
| | - Midori Yamamoto
- Center for Preventive Medical Sciences, Chiba University, Chiba, 263-8522, Japan
| | - Kenichi Sakurai
- Center for Preventive Medical Sciences, Chiba University, Chiba, 263-8522, Japan
| | - Yu Taniguchi
- Centre for Health and Environmental Risk Research, National Institute for Environmental Studies, Ibaraki, 305- 8506, Japan
| | - Yayoi Kobayashi
- Centre for Health and Environmental Risk Research, National Institute for Environmental Studies, Ibaraki, 305- 8506, Japan
| | - Chisato Mori
- Center for Preventive Medical Sciences, Chiba University, Chiba, 263-8522, Japan
- Department of Bioenvironmental Medicine, Graduate School of Medicine, Chiba University, Chiba, 260-8670, Japan
| | - Michihiro Kamijima
- Department of Occupational and Environmental Health, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan.
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Habib SS, Naz S, Fazio F, Cravana C, Ullah M, Rind KH, Attaullah S, Filiciotto F, Khayyam K. Assessment and Bioaccumulation of Heavy Metals in Water, Fish (wild and Farmed) and Associated Human Health Risk. Biol Trace Elem Res 2024; 202:725-735. [PMID: 37178449 DOI: 10.1007/s12011-023-03703-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 05/08/2023] [Indexed: 05/15/2023]
Abstract
Worldwide, anthropogenic activities are causing the natural environment and aquaculture systems to become heavily contaminated with heavy metals, which can lead to consumer's health problems. In the current study, wild and farmed fish (n = 30) and water samples (n = 6) have been collected from the Chashma barrage and fish farm to assess the heavy metals concentration, i.e., Cu, Cd, Pb, Zn and Cr, in the water and some important organs (gills, liver, muscle, brain and bones) of wild and farmed fish (Labeo rohita) using Graphite furnace Atomic absorption spectrometry. Bioaccumulation factor and human health risk assessment were calculated to measure the health status of both fish and humans. Results show that in wild and farm fish's gills, muscles and bones, the trend of the heavy metals was Zn > Pb > Cu > Cd > Cr. On the other hand, the brain and liver show Zn > Cu > Pb > Cd > Cr trend. Comparatively, the heavy metals concentration was mostly higher (P < 0.05) in wild fish. Further; in both fish habitats (water) the heavy metals (Cd and Pb) concentration was higher than the WHO standard level, while in the body, Cd was higher (P < 0.05) in all studied organs except the muscle, Cr was only lower (P > 0.05) in muscle and brain. Pb was higher (P < 0.05) in all studied organs of both fish. Bioaccumulation of heavy metals was mostly higher (P < 0.05) in wild fish than in farmed. EDI and THQ were higher in wild fish, but the HI value was lower than 1 for both fish. Moreover, the PCA analysis suggests a positive correlation between heavy metals concentration in fish organs and the water of both fish (wild and farmed). Results indicated that farmed fish showed less potential risk to humans than wild fish.
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Affiliation(s)
- Syed Sikandar Habib
- Department of Zoology, University of Sargodha, Sargodha, 40100, Punjab, Pakistan
| | - Saira Naz
- Institute of Molecular Biology and Biotechnology, University of Lahore Sargodha Campus, Sargodha, 40100, Punjab, Pakistan
| | - Francesco Fazio
- Department of Veterinary Sciences, University of Messina, Via Palatuccisnc, 98168, Messina, Italy.
| | - Cristina Cravana
- Department of Veterinary Sciences, University of Messina, Via Palatuccisnc, 98168, Messina, Italy
| | - Mujeeb Ullah
- Department of Zoology, Islamia College University, Peshawar, 25120, Khyber Pakhtunkhwa, Pakistan
| | - Khalid Hussain Rind
- Department of Molecular Biology and Genetics, Shaheed Benazir Bhutto University Shaheed Benazirabad, Nawabshah, 67450, Sindh, Pakistan
| | - Sobia Attaullah
- Department of Zoology, Islamia College University, Peshawar, 25120, Khyber Pakhtunkhwa, Pakistan
| | - Francesco Filiciotto
- Institute of Polar Science, National Research Council, Unit of Messina, Messina, Italy
| | - Khayyam Khayyam
- Department of Zoology, Islamia College University, Peshawar, 25120, Khyber Pakhtunkhwa, Pakistan
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Stanek LW, Grokhowsky N, George BJ, Thomas KW. Assessing lead exposure in U.S. pregnant women using biological and residential measurements. Sci Total Environ 2023; 905:167135. [PMID: 37739076 DOI: 10.1016/j.scitotenv.2023.167135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 09/14/2023] [Accepted: 09/14/2023] [Indexed: 09/24/2023]
Abstract
There is strong scientific evidence for multiple pathways of human exposure to lead (Pb) in residential settings, particularly for young children; however, less is known about maternal exposure during pregnancy and children's exposure during early lifestages. A robust, multi-faceted secondary analysis was conducted using data collected by the National Institute of Child Health and Human Development in the 2009-2014 National Children's Study Vanguard Studies. Descriptive statistics summarized Pb concentrations of maternal blood, maternal urine, and house dust vacuum samples collected during pregnancy and residence surface wipes collected both during pregnancy and six months post-partum. The maternal blood Pb level geometric mean was 0.44 μg/dL (n = 426), with no women having values ≥ 5 μg/dL; creatinine-adjusted maternal urinary Pb geometric mean was 0.43 μg/g (n = 366). These blood and urine concentrations are similar to those observed for females in the general U.S. population in the National Health and Nutrition Examination Survey 2010-2011 cycle. A modest correlation between maternal blood Pb and surface wipe measurements during pregnancy was observed (Spearman r = 0.35, p < 0.0001). Surface wipe Pb loadings obtained in mother's homes during pregnancy (n = 640) and from areas where children spent the most time at roughly 6 months of age (n = 99) ranged from 0.02 to 71.8 ng/cm2, with geometric means of 0.47 and 0.49 ng/cm2, respectively, which were relatively low compared to other national studies. Survey responses of demographic, lifestyle, and residence characteristics were assessed for associations with blood concentration and surface wipe loading. Demographic (e.g., race/ethnicity, income, education, marital status) and housing characteristics (e.g., year home built, paint condition, own or rent home, attached garage) were associated with both maternal blood and surface wipe loadings during pregnancy. The availability of residential environmental media and extensive survey data provided enhanced understanding of Pb exposure during pregnancy and early life.
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Affiliation(s)
- Lindsay W Stanek
- U.S. Environmental Protection Agency (EPA), Office of Research and Development (ORD), Research Triangle Park, NC, USA.
| | - Nicholas Grokhowsky
- Formerly of Oak Ridge Institute for Science and Education, Research Triangle Park, NC, USA
| | - Barbara J George
- U.S. Environmental Protection Agency (EPA), Office of Research and Development (ORD), Research Triangle Park, NC, USA
| | - Kent W Thomas
- U.S. Environmental Protection Agency (EPA), Office of Research and Development (ORD), Research Triangle Park, NC, USA
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9
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Ashley-Martin J, Fisher M, Belanger P, Cirtiu CM, Arbuckle TE. Biomonitoring of inorganic arsenic species in pregnancy. J Expo Sci Environ Epidemiol 2023; 33:921-932. [PMID: 35948664 PMCID: PMC10733137 DOI: 10.1038/s41370-022-00457-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Revised: 06/22/2022] [Accepted: 07/01/2022] [Indexed: 06/15/2023]
Abstract
Exposure assessment of inorganic arsenic is challenging due to the existence of multiple species, complexity of arsenic metabolism, and variety of exposure sources. Exposure assessment of arsenic during pregnancy is further complicated by the physiological changes that occur to support fetal growth. Given the well-established toxicity of inorganic arsenic at high concentrations, continued research into the potential health effects of low-level exposure on maternal and fetal health is necessary. Our objectives were to review the value of and challenges inherent in measuring inorganic arsenic species in pregnancy and highlight related research priorities. We discussed how the physiological changes of pregnancy influence arsenic metabolism and necessitate the need for pregnancy-specific data. We reviewed the biomonitoring challenges according to common and novel biological matrices and discussed how each matrix differs according to half-life, bioavailability, availability of laboratory methods, and interpretation within pregnancy. Exposure assessment in both established and novel matrices that accounts for the physiological changes of pregnancy and complexity of speciation is a research priority. Standardization of laboratory method for novel matrices will help address these data gaps. Research is particularly lacking in contemporary populations of pregnant women without naturally elevated arsenic drinking water concentrations (i.e. <10 µg/l).
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Affiliation(s)
- Jillian Ashley-Martin
- Environmental Health, Science and Research Bureau, Health Canada, Ottawa, ON, Canada.
| | - Mandy Fisher
- Environmental Health, Science and Research Bureau, Health Canada, Ottawa, ON, Canada
| | - Patrick Belanger
- INSPQ, Centre de toxicologie du Québec, Direction de la santé environnementale, au travail et de la toxicology, Quebec, QC, Canada
| | - Ciprian Mihai Cirtiu
- INSPQ, Centre de toxicologie du Québec, Direction de la santé environnementale, au travail et de la toxicology, Quebec, QC, Canada
| | - Tye E Arbuckle
- Environmental Health, Science and Research Bureau, Health Canada, Ottawa, ON, Canada
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Nakamura Y, Kobayashi S, Cho K, Itoh S, Miyashita C, Yamaguchi T, Iwata H, Tamura N, Saijo Y, Ito Y, Seto Y, Honjo R, Ando A, Furuse Y, Manabe A, Kishi R. Prenatal metal concentrations and physical abnormalities in the Japan Environment and Children's Study. Pediatr Res 2023:10.1038/s41390-023-02851-4. [PMID: 37857850 DOI: 10.1038/s41390-023-02851-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 08/22/2023] [Accepted: 09/27/2023] [Indexed: 10/21/2023]
Abstract
BACKGROUND The association between prenatal metal exposure and congenital anomalies is unclear. We aimed to examine the association between exposure to cadmium, lead, mercury, selenium, and manganese and physical abnormalities. METHODS Data from 89,887 pregnant women with singleton pregnancies who participated in the Japan Environment and Children's Study (JECS) were used. The correlation between maternal blood metal concentrations and physical abnormalities during the second or third trimester was investigated using logistic regression models. Physical anomalies included those observed at birth or at 1 month, primarily from ICD-10 Chapter 17, particularly congenital anomalies associated with environmental factors (e.g., hypospadias, cryptorchidism, cleft lip and palate, digestive tract atresia, congenital heart disease, and chromosomal abnormalities) and minor abnormalities. RESULTS After adjusting for covariates, the OR (95% CIs) of physical abnormalities for a one-unit rise in Mn concentrations in all individuals were 1.26 (1.08, 1.48). The OR (95% CIs) of physical abnormalities in the 4th quartile (≥18.7 ng/g) were 1.06 (1.01, 1.13) (p-value for the trend = 0.034) compared with those in the 1st quartile (≤12.5 ng/g). CONCLUSION In Japan, maternal blood Mn concentrations above threshold during pregnancy may slightly increase the incidence of physical abnormalities. IMPACT Physical abnormalities (including minor anomalies and congenital anomalies) are associated with prenatal manganese concentrations. They are not associated with cadmium, lead, mercury, and selenium concentrations.
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Affiliation(s)
- Yuichi Nakamura
- Department of Pediatrics, Hokkaido University Graduate School of Medicine, Sapporo, Japan
- Maternity and Perinatal Care Center, Hokkaido University Hospital, Sapporo, Japan
| | - Sumitaka Kobayashi
- Center for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan.
| | - Kazutoshi Cho
- Maternity and Perinatal Care Center, Hokkaido University Hospital, Sapporo, Japan
| | - Sachiko Itoh
- 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
| | - Hiroyoshi Iwata
- Center for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan
| | - Naomi Tamura
- Center for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan
| | - Yasuaki Saijo
- Department of Social Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Yoshiya Ito
- Division of Clinical Medicine, Japanese Red Cross Hokkaido College of Nursing, Kitami, Japan
| | - Yoshitaka Seto
- Department of Pediatrics, Hokkaido University Graduate School of Medicine, Sapporo, Japan
- Maternity and Perinatal Care Center, Hokkaido University Hospital, Sapporo, Japan
| | - Ryota Honjo
- Department of Pediatrics, Hokkaido University Graduate School of Medicine, Sapporo, Japan
- Maternity and Perinatal Care Center, Hokkaido University Hospital, Sapporo, Japan
| | - Akiko Ando
- Department of Pediatrics, Hokkaido University Graduate School of Medicine, Sapporo, Japan
- Maternity and Perinatal Care Center, Hokkaido University Hospital, Sapporo, Japan
| | - Yuta Furuse
- Maternity and Perinatal Care Center, Hokkaido University Hospital, Sapporo, Japan
| | - Atsushi Manabe
- Department of Pediatrics, Hokkaido University Graduate School of Medicine, Sapporo, Japan
- Maternity and Perinatal Care Center, Hokkaido University Hospital, Sapporo, Japan
| | - Reiko Kishi
- Center for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan
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11
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Wang M, Yu Q. Association between blood heavy metal concentrations and skin cancer in the National Health and Nutrition Examination Survey, 2011-2018. Environ Sci Pollut Res Int 2023; 30:108681-108693. [PMID: 37751003 DOI: 10.1007/s11356-023-29674-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 08/30/2023] [Indexed: 09/27/2023]
Abstract
We aimed to evaluate the associations between blood cadmium (Cd), mercury (Hg), lead (Pb), manganese (Mn), and selenium (Se) concentrations and skin cancer. This cross-sectional study was based on National Health and Nutritional Examination Survey (NHANES) data. A binomial logistic regression model was used to analyze the associations between exposure to the metal elements and the risk of skin cancer, and further stratified analyses were conducted by gender, age, body mass index, ethnicity, education, smoking, alcohol drinking, and hypertension. A total of 16,034 participants were included. After fully adjusting for multivariate, the odd ratio (OR)[95% confidence interval (95% CI)] values for skin cancer in those with blood Mn concentrations in the second, third, and fourth quartiles were 0.52 (0.33-0.82), 0.57 (0.36-0.9), and 0.56 (0.35-0.89), respectively, compared with those in the lowest quartile. The ORs (95% CI) for each 1-SD increment in log-transformed values for blood Mn concentrations were 0.79 (0.66-0.94), 0.8 (0.66-0.97), and 0.79 (0.66-0.96), respectively. A significant association between blood Hg and skin cancer was also observed in participants who drank alcohol, with a corresponding OR (95% CI) of 2.61 (1.37-5.00) (p interaction = 0.006). Our study indicated that a higher blood Mn concentration was negatively associated with skin cancer, and blood Hg was positively associated with skin cancer in participants who drank alcohol.
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Affiliation(s)
- Mei Wang
- Department of Dermatology, Yuyao People's Hospital, Ningbo, Zhejiang, People's Republic of China
| | - Qing Yu
- Department of Dermatology, Yuyao People's Hospital, Ningbo, Zhejiang, People's Republic of China.
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12
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Berky AJ, Weinhouse C, Vissoci J, Rivera N, Ortiz EJ, Navio S, Miranda JJ, Mallipudi A, Fixen E, Hsu-Kim H, Pan WK. In Utero Exposure to Metals and Birth Outcomes in an Artisanal and Small-Scale Gold Mining Birth Cohort in Madre de Dios, Peru. Environ Health Perspect 2023; 131:97008. [PMID: 37747404 PMCID: PMC10519195 DOI: 10.1289/ehp10557] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 08/03/2023] [Accepted: 08/09/2023] [Indexed: 09/26/2023]
Abstract
BACKGROUND Few birth cohorts in South America evaluate the joint effect of minerals and toxic metals on neonatal health. In Madre de Dios, Peru, mercury exposure is prevalent owing to artisanal gold mining, yet its effect on neonatal health is unknown. OBJECTIVES We aimed to determine whether toxic metals are associated with lower birth weight and shorter gestational age independently of antenatal care and other maternal well-being factors. METHODS Data are from the COhorte de NAcimiento de MAdre de Dios (CONAMAD) birth cohort, which enrolled pregnant women in Madre de Dios prior to their third trimester and obtained maternal and cord blood samples at birth. We use structural equation models (SEMs) to construct latent variables for the maternal metals environment (ME) and the fetal environment (FE) using concentrations of calcium, iron, selenium, zinc, magnesium, mercury, lead, and arsenic measured in maternal and cord blood, respectively. We then assessed the relationship between the latent variables ME and FE, toxic metals, prenatal visits, hypertension, and their effect on gestational age and birth weight. RESULTS Among 198 mothers successfully enrolled and followed at birth, 29% had blood mercury levels that exceeded the U.S. Centers for Disease Control and Prevention threshold of 5.8 μ g / L and 2 mothers surpassed the former 5 - μ g / dL threshold for blood lead. The current threshold value is 3.5 μ g / dL . Minerals and toxic metals loaded onto ME and FE latent variables. ME was associated with FE (β = 0.24; 95% CI: 0.05, 0.45). FE was associated with longer gestational age (β = 2.31; 95% CI: - 0.3 , 4.51) and heavier birth weight. Mercury exposure was not directly associated with health outcomes. A 1% increase in maternal blood lead shortened gestational age by 0.05 d (β = - 0.75 ; 95% CI: - 1.51 , - 0.13 ), which at the 5 - μ g / dL threshold resulted in a loss of 3.6 gestational days and 76.5 g in birth weight for newborns. Prenatal care visits were associated with improved birth outcomes, with a doubling of visits from 6 to 12 associated with 5.5 more gestational days (95% CI: 1.6, 9.4) and 319 g of birth weight (95% CI: 287.6, 350.7). DISCUSSION Maternal lead, even at low exposures, was associated with shorter gestation and lower birth weight. Studies that focus only on harmful exposures or nutrition may mischaracterize the dynamic maternal ME and FE. SEMs provide a framework to evaluate these complex relationships during pregnancy and reduce overcontrolling that can occur with linear regression. https://doi.org/10.1289/EHP10557.
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Affiliation(s)
- Axel J Berky
- Nicholas School of the Environment, Duke University, Durham, North Carolina, USA
| | - Caren Weinhouse
- Oregon Institute of Occupational Health Sciences, Oregon Health & Sciences University, Portland, Oregon, USA
| | - Joao Vissoci
- Division of Emergency Medicine, Department of Surgery, Duke University School of Medicine, Durham, North Carolina, USA
| | - Nelson Rivera
- Department of Civil and Environmental Engineering, Pratt School of Engineering, Duke University, Durham, North Carolina, USA
| | - Ernesto J Ortiz
- Duke Global Health Institute, Duke University, Durham, North Carolina, USA
| | - Susy Navio
- Dirección Regional de Salud, Ministerio de Salud del Perú, Madre de Dios, Perú
| | - J Jaime Miranda
- CRONICAS Center of Excellence in Chronic Diseases, Universidad Peruana Cayetano Heredia, Lima, Peru
- School of Medicine, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Andres Mallipudi
- Bellevue Hospital Center/Ronald O. Perelman Department of Emergency Medicine, New York University Grossman School of Medicine, New York, New York, USA
| | - Emma Fixen
- Department of Dermatology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Heileen Hsu-Kim
- Department of Civil and Environmental Engineering, Pratt School of Engineering, Duke University, Durham, North Carolina, USA
| | - William K Pan
- Nicholas School of the Environment, Duke University, Durham, North Carolina, USA
- Duke Global Health Institute, Duke University, Durham, North Carolina, USA
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13
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Miyazaki J, Ikehara S, Tanigawa K, Kimura T, Ueda K, Ozono K, Kimura T, Kobayashi Y, Yamazaki S, Kamijima M, Sobue T, Iso H. Prenatal exposure to selenium, mercury, and manganese during pregnancy and allergic diseases in early childhood: The Japan Environment and Children's study. Environ Int 2023; 179:108123. [PMID: 37595534 DOI: 10.1016/j.envint.2023.108123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 07/23/2023] [Accepted: 07/28/2023] [Indexed: 08/20/2023]
Abstract
BACKGROUND Prenatal exposure to metallic elements may adversely affect early childhood health. However, more evidence is needed as population-based cohort studies are currently limited. OBJECTIVES We aimed to examine the associations between prenatal metallic (mercury, selenium, and manganese) exposure and the risk of allergic diseases in early childhood until three years of age. METHODS The data from 94,794 mother-infant pairs, who participated in the Japan Environment and Children's study, were used in this study. Prenatal metallic element exposure was measured in maternal blood collected during mid-pregnancy. The incidence of atopic dermatitis, food allergies, asthma, and allergic rhinitis during the first three years of life was prospectively investigated using self-reports of physician-diagnosed allergies. A multivariable modified Poisson regression model was used to estimate the cumulative incidence ratio and their 95% confidence intervals of allergic diseases associated with prenatal exposure to mercury, selenium, and manganese. We further evaluated the interaction between mercury and selenium exposures in this association. RESULTS We confirmed 26,238 cases of childhood allergic diseases: atopic dermatitis, food allergies, asthma, and allergic rhinitis in 9,715 (10.3%), 10,897 (11.5%), and 9,857 (10.4%), 4,630 (4.9%), respectively. No association was found between prenatal mercury or manganese exposure and the risk of allergic diseases. Prenatal selenium exposure was inversely associated with atopic dermatitis, food allergies, allergic rhinitis, and any allergic diseases, but not with asthma. These inverse associations were more pronounced for lower mercury exposures than for higher exposures. CONCLUSIONS Our findings suggest that prenatal exposure to selenium may be beneficial for reducing the risk of atopic dermatitis, food allergies, allergic rhinitis, and any allergic diseases in early childhood, especially with lower prenatal mercury exposure.
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Affiliation(s)
- Junji Miyazaki
- Division of Environmental Medicine and Population Sciences, Department of Social Medicine, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita-shi, Osaka 565-0871, Japan; Osaka Regional Center for Japan Environment and Children's Study (JECS), Osaka University, 1-3, Yamadaoka, Suita-shi, Osaka 565-0871, Japan; Department of Preventive Medicine and Public Health, School of Medicine, Keio University, 35, Shinano-cho, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Satoyo Ikehara
- Division of Environmental Medicine and Population Sciences, Department of Social Medicine, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita-shi, Osaka 565-0871, Japan; Osaka Regional Center for Japan Environment and Children's Study (JECS), Osaka University, 1-3, Yamadaoka, Suita-shi, Osaka 565-0871, Japan
| | - Kanami Tanigawa
- Division of Environmental Medicine and Population Sciences, Department of Social Medicine, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita-shi, Osaka 565-0871, Japan; Osaka Regional Center for Japan Environment and Children's Study (JECS), Osaka University, 1-3, Yamadaoka, Suita-shi, Osaka 565-0871, Japan; Osaka Maternal and Child Health Information Center, Osaka Women's and Children's Hospital, 840, Murodo-cho, Izumi-shi, Osaka 594-1101, Japan
| | - Takashi Kimura
- Department of Public Health, Faculty of Medicine, Hokkaido University, North 15, West 7, Kita-ku, Sapporo-shi, Hokkaido 060-8638, Japan
| | - Kimiko Ueda
- Division of Environmental Medicine and Population Sciences, Department of Social Medicine, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita-shi, Osaka 565-0871, Japan; Osaka Regional Center for Japan Environment and Children's Study (JECS), Osaka University, 1-3, Yamadaoka, Suita-shi, Osaka 565-0871, Japan; Faculty of Health and Well-being, Kansai University, 1-11-1 Kaorigaoka-cho, Sakai-ku, Sakai, Osaka, 590-8515, Japan
| | - Keiichi Ozono
- Department of Pediatrics, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita-shi, Osaka 565-0871, Japan
| | - Tadashi Kimura
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita-shi, Osaka 565-0871, Japan
| | - Yayoi Kobayashi
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2, Onogawa, Tsukuba-shi, Ibaraki 305-8506, Japan
| | - Shin Yamazaki
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2, Onogawa, Tsukuba-shi, Ibaraki 305-8506, Japan
| | - Michihiro Kamijima
- Department of Occupational and Environmental Health, Graduate School of Medical Sciences, Nagoya City University, 1, Kawasumi, Mizuho-Cho, Mizuho-ku, Nagoya 467-8601, Japan
| | - Tomotaka Sobue
- Division of Environmental Medicine and Population Sciences, Department of Social Medicine, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita-shi, Osaka 565-0871, Japan; Osaka Regional Center for Japan Environment and Children's Study (JECS), Osaka University, 1-3, Yamadaoka, Suita-shi, Osaka 565-0871, Japan
| | - Hiroyasu Iso
- Osaka Regional Center for Japan Environment and Children's Study (JECS), Osaka University, 1-3, Yamadaoka, Suita-shi, Osaka 565-0871, Japan; Institute for Global Health Policy Research, Bureau of International Health Cooperation, National Center for Global Health and Medicine, 1-21-1, Toyama, Shinjuku-ku, Tokyo 162-8655, Japan.
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Weyde KVF, Winterton A, Surén P, Andersen GL, Vik T, Biele G, Knutsen HK, Thomsen C, Meltzer HM, Skogheim TS, Engel SM, Aase H, Villanger GD. Association between gestational levels of toxic metals and essential elements and cerebral palsy in children. Front Neurol 2023; 14:1124943. [PMID: 37662050 PMCID: PMC10470125 DOI: 10.3389/fneur.2023.1124943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 07/11/2023] [Indexed: 09/05/2023] Open
Abstract
Introduction Cerebral palsy (CP) is the most common motor disability in childhood, but its causes are only partly known. Early-life exposure to toxic metals and inadequate or excess amounts of essential elements can adversely affect brain and nervous system development. However, little is still known about these as perinatal risk factors for CP. This study aims to investigate the associations between second trimester maternal blood levels of toxic metals, essential elements, and mixtures thereof, with CP diagnoses in children. Methods In a large, population-based prospective birth cohort (The Norwegian Mother, Father, and Child Cohort Study), children with CP diagnoses were identified through The Norwegian Patient Registry and Cerebral Palsy Registry of Norway. One hundred forty-four children with CP and 1,082 controls were included. The relationship between maternal blood concentrations of five toxic metals and six essential elements and CP diagnoses were investigated using mixture approaches: elastic net with stability selection to identify important metals/elements in the mixture in relation to CP; then logistic regressions of the selected metals/elements to estimate odds ratio (OR) of CP and two-way interactions among metals/elements and with child sex and maternal education. Finally, the joint effects of the mixtures on CP diagnoses were estimated using quantile-based g-computation analyses. Results The essential elements manganese and copper, as well as the toxic metal Hg, were the most important in relation to CP. Elevated maternal levels of copper (OR = 1.40) and manganese (OR = 1.20) were associated with increased risk of CP, while Hg levels were, counterintuitively, inversely related to CP. Metal/element interactions that were associated with CP were observed, and that sex and maternal education influenced the relationships between metals/elements and CP. In the joint mixture approach no significant association between the mixture of metals/elements and CP (OR = 1.00, 95% CI = [0.67, 1.50]) was identified. Conclusion Using mixture approaches, elevated levels of copper and manganese measured in maternal blood during the second trimester could be related to increased risk of CP in children. The inverse associations between maternal Hg and CP could reflect Hg as a marker of maternal fish intake and thus nutrients beneficial for foetal brain development.
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Affiliation(s)
- Kjell Vegard F. Weyde
- Division of Mental and Physical Health, Norwegian Institute of Public Health, Oslo, Norway
| | - Adriano Winterton
- Division of Mental and Physical Health, Norwegian Institute of Public Health, Oslo, Norway
| | - Pål Surén
- Division of Mental and Physical Health, Norwegian Institute of Public Health, Oslo, Norway
| | - Guro L. Andersen
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Torstein Vik
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Guido Biele
- Division of Mental and Physical Health, Norwegian Institute of Public Health, Oslo, Norway
| | - Helle K. Knutsen
- Division of Infection Control and Environmental Health, Norwegian Institute of Public Health, Oslo, Norway
| | - Cathrine Thomsen
- Division of Infection Control and Environmental Health, Norwegian Institute of Public Health, Oslo, Norway
| | - Helle M. Meltzer
- Division of Infection Control and Environmental Health, Norwegian Institute of Public Health, Oslo, Norway
| | - Thea S. Skogheim
- Division of Mental and Physical Health, Norwegian Institute of Public Health, Oslo, Norway
| | - Stephanie M. Engel
- Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Heidi Aase
- Division of Mental and Physical Health, Norwegian Institute of Public Health, Oslo, Norway
| | - Gro D. Villanger
- Division of Mental and Physical Health, Norwegian Institute of Public Health, Oslo, Norway
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15
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Gerzen OP, Votinova VO, Potoskueva IK, Tzybina AE, Nikitina LV. Direct Effects of Toxic Divalent Cations on Contractile Proteins with Implications for the Heart: Unraveling Mechanisms of Dysfunction. Int J Mol Sci 2023; 24:10579. [PMID: 37445756 DOI: 10.3390/ijms241310579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 06/19/2023] [Accepted: 06/22/2023] [Indexed: 07/15/2023] Open
Abstract
The binding of calcium and magnesium ions to proteins is crucial for regulating heart contraction. However, other divalent cations, including xenobiotics, can accumulate in the myocardium and enter cardiomyocytes, where they can bind to proteins. In this article, we summarized the impact of these cations on myosin ATPase activity and EF-hand proteins, with special attention given to toxic cations. Optimal binding to EF-hand proteins occurs at an ionic radius close to that of Mg2+ and Ca2+. In skeletal Troponin C, Cd2+, Sr2+, Pb2+, Mn2+, Co2+, Ni2+, Ba2+, Mg2+, Zn2+, and trivalent lanthanides can substitute for Ca2+. As myosin ATPase is not a specific MgATPase, Ca2+, Fe2+, Mn2+, Ni2+, and Sr2+ could support myosin ATPase activity. On the other hand, Zn2+ and Cu2 significantly inhibit ATPase activity. The affinity to various divalent cations depends on certain proteins or their isoforms and can alter with amino acid substitution and post-translational modification. Cardiac EF-hand proteins and the myosin ATP-binding pocket are potential molecular targets for toxic cations, which could significantly alter the mechanical characteristics of the heart muscle at the molecular level.
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Affiliation(s)
- Oksana P Gerzen
- Institute of Immunology and Physiology of the Ural Branch of the Russian Academy of Sciences, 620049 Ekaterinburg, Russia
| | - Veronika O Votinova
- Institute of Immunology and Physiology of the Ural Branch of the Russian Academy of Sciences, 620049 Ekaterinburg, Russia
| | - Iulia K Potoskueva
- Institute of Immunology and Physiology of the Ural Branch of the Russian Academy of Sciences, 620049 Ekaterinburg, Russia
| | - Alyona E Tzybina
- Institute of Immunology and Physiology of the Ural Branch of the Russian Academy of Sciences, 620049 Ekaterinburg, Russia
| | - Larisa V Nikitina
- Institute of Immunology and Physiology of the Ural Branch of the Russian Academy of Sciences, 620049 Ekaterinburg, Russia
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Okubo H, Nakayama SF. Periconceptional diet quality and its relation to blood heavy metal concentrations among pregnant women: The Japan environment and Children's study. Environ Res 2023; 225:115649. [PMID: 36894116 DOI: 10.1016/j.envres.2023.115649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 03/01/2023] [Accepted: 03/06/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND Diets contain toxic chemical contaminants as well as essential nutrients, both of which influence the intrauterine environment for foetal growth. However, whether a high-quality diet that is nutritionally healthy also results in lower exposure to chemical contaminants is unknown. OBJECTIVE We examined associations between periconceptional maternal diet quality and circulating concentrations of heavy metals during pregnancy. DESIGN Dietary intake over the year prior to the first trimester of pregnancy was assessed using a validated, self-administered food frequency questionnaire among 81,104 pregnant Japanese women who participated in the Japan Environment and Children's Study. Overall diet quality was determined using the Balanced Diet Score (BDS) based on the Japanese Food Guide Spinning Top, the Healthy Eating Index-2015 (HEI-2015), the Dietary Approaches to Stop Hypertension (DASH) score and the Mediterranean diet score (MDS). We measured whole-blood concentrations of mercury (Hg), lead (Pb) and cadmium (Cd) during the second or third trimester of pregnancy. RESULTS After controlling for confounders, all diet quality scores were positively associated with blood Hg concentrations. By contrast, higher BDS, HEI-2015 and DASH scores were associated with lower concentrations of Pb and Cd. Although the MDS was positively associated with concentrations of Pb and Cd, when dairy products were classified as a beneficial (rather than detrimental) food component, these associations were attenuated. CONCLUSION A high-quality diet may reduce exposure to Pb and Cd but not Hg. Further studies are required to determine the optimal balance between mercury exposure risk and nutritional benefits of high-quality diets prior to pregnancy.
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Affiliation(s)
- Hitomi Okubo
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Ibaraki, Japan; Research Fellow of Japan Society for the Promotion of Science, Tokyo, Japan.
| | - Shoji F Nakayama
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Ibaraki, Japan.
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17
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Go H, Hashimoto K, Maeda H, Ogasawara K, Kyozuka H, Murata T, Sato A, Ogata Y, Shinoki K, Nishigori H, Fujimori K, Yasumura S, Hosoya M. Maternal triglyceride levels and neonatal outcomes: The Japan Environment and Children's Study. J Clin Lipidol 2023; 17:356-366. [PMID: 37210241 DOI: 10.1016/j.jacl.2023.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 04/14/2023] [Accepted: 04/16/2023] [Indexed: 05/22/2023]
Abstract
BACKGROUND Although maternal triglyceride (TG) is important for fetal growth, there are few large cohort studies investigating the relationships between maternal TG during pregnancy and neonatal outcomes. OBJECTIVES The objective of this study was to investigate the associations between maternal TG during the second and third trimesters and neonatal outcomes including preterm birth (PTB), low birth weight (LBW), small for gestational age (SGA) and large for gestational age (LGA). METHODS This was a prospective birth cohort study using data of the Japan Environment and Children's Study included data of births from 2011-2014 in Japan including 79,519 pairs. Participants were divided into tertiles according to maternal TG in the second or third trimesters. Multiple logistic regression modeling was used to examine the risks of LBW, SGA, LGA and PTB in association with maternal TG levels in the second or third trimesters RESULTS: In the second trimester, compared with reference TG group (T2), women in higher TG group (T3) and lower TG group (T1) were also at increased risk of LGA (aOR 1.20, 95% CI 1.11-1.29) and SGA (aOR 1.25, 95% CI 1.10-1.41), respectively. In the third trimester, women in T3 and T1 were at increased risk of LGA (aOR 1.27, 95% CI 1.17-1.38) and SGA (aOR 1.17, 95% CI 1.02-1.34), respectively. CONCLUSION In this study, higher maternal TG levels in the second or third trimesters were associated with risks of LGA, however, lower maternal TG levels in the second or third trimesters were conversely associated with risks of SGA.
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Affiliation(s)
- Hayato Go
- Department of Pediatrics, Fukushima Medical University School of Medicine, Fukushima, Japan.
| | - Koichi Hashimoto
- Department of Pediatrics, Fukushima Medical University School of Medicine, Fukushima, Japan; Fukushima Regional Center for the Japan Environmental and Children's Study, Fukushima, Japan
| | - Hajime Maeda
- Department of Pediatrics, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Kei Ogasawara
- Department of Pediatrics, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Hyo Kyozuka
- Fukushima Regional Center for the Japan Environmental and Children's Study, Fukushima, Japan; Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Tsuyoshi Murata
- Department of Pediatrics, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Akiko Sato
- Fukushima Regional Center for the Japan Environmental and Children's Study, Fukushima, Japan
| | - Yuka Ogata
- Fukushima Regional Center for the Japan Environmental and Children's Study, Fukushima, Japan
| | - Kosei Shinoki
- Fukushima Regional Center for the Japan Environmental and Children's Study, Fukushima, Japan
| | - Hidekazu Nishigori
- Fukushima Medical Center for Children and Women, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Keiya Fujimori
- Fukushima Regional Center for the Japan Environmental and Children's Study, Fukushima, Japan; Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Seiji Yasumura
- Fukushima Regional Center for the Japan Environmental and Children's Study, Fukushima, Japan; Department of Public Health, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Mitsuaki Hosoya
- Department of Pediatrics, Fukushima Medical University School of Medicine, Fukushima, Japan; Fukushima Regional Center for the Japan Environmental and Children's Study, Fukushima, Japan
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Okubo H, Nakayama SF. Periconceptional maternal diet quality influences blood heavy metal concentrations and their effect on low birth weight: the Japan Environment and Children's Study. Environ Int 2023; 173:107808. [PMID: 36827813 DOI: 10.1016/j.envint.2023.107808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 01/09/2023] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND Both poor maternal nutrition and toxic heavy metal exposure influence foetal growth and development. However, whether consumption of a variety of healthy foods modifies the association between prenatal heavy metal exposure and foetal growth is unknown. OBJECTIVE We examined whether long-term maternal diet quality in periconception modifies the associations between maternal circulating concentrations of heavy metals and foetal growth. DESIGN Data of 72,317 Japanese women who delivered singleton infants was extracted from the Japan Environment and Children's Study. Maternal diet over a 1-year before the first trimester of pregnancy was assessed using a validated food frequency questionnaire, and overall diet quality was determined using the balanced diet score based on the Japanese Food Guide Spinning Top. Maternal whole-blood concentrations of mercury (Hg), lead (Pb) and cadmium (Cd) were measured during the second/third trimester of pregnancy. Bayesian inference of multiple linear regression analysis was performed to evaluate the relationships between maternal diet quality and the blood concentrations of heavy metals; Bayesian logistic regression was used to analyse the risk of low birth weight (LBW; <2,500 g). RESULTS After controlling for confounders, a high maternal balanced diet score was associated with low concentrations of blood Pb and Cd and high Hg. While all heavy metals assessed were positively associated with LBW risk, a higher maternal balanced diet score was negatively associated with LBW risk. A high-quality maternal diet attenuated the effect of Pb on LBW, an effect that was more marked at high blood Pb concentrations. CONCLUSION A high-quality, 'well-balanced' diet prior to conception may reduce exposure to some heavy metals and mitigate the elevated risk of LBW associated with prenatal Pb exposure in Japanese mother-child pairs.
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Affiliation(s)
- Hitomi Okubo
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Ibaraki, Japan; Research Fellow of Japan Society for the Promortion of Science, Tokyo, Japan.
| | - Shoji F Nakayama
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Ibaraki, Japan.
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Ishitsuka K, Tsuji M, Yamamoto M, Tanaka R, Suga R, Kuwamura M, Sakuragi T, Shimono M, Kusuhara K. Association between maternal fish consumption during pregnancy and preterm births: the Japan Environment and Children's Study. Environ Health Prev Med 2023; 28:47. [PMID: 37648522 PMCID: PMC10480610 DOI: 10.1265/ehpm.23-00084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 06/30/2023] [Indexed: 09/01/2023] Open
Abstract
BACKGROUND Fish are a rich source of essential nutrients that protect against preterm birth. However, as fish can absorb environmental pollutants, their consumption can also increase the risk of preterm birth. This study aimed to assess whether maternal fish consumption during pregnancy is associated with preterm birth in a nationwide large Japanese cohort that consumed relatively high amounts and many types of fish. METHODS This study included 81,428 mother-child pairs enrolled in a nationwide prospective Japanese birth cohort study. Fish consumption was assessed using a validated food frequency questionnaire. Multivariate logistic regression was used to investigate the association of total consumption of fish, fatty fish and lean fish, fish paste, and seafood and clams with preterm birth, adjusted for potential confounders. RESULTS There was no association between overall fish consumption and preterm births. However, the highest quintile of fish paste consumption was significantly associated with an increased risk of preterm birth (odds ratio [OR]: 1.11; 95% confidence interval [CI: 1.04, 1.17]). The consumption of baked fish paste at least three times per week was significantly associated with preterm birth (OR: 1.20; 95% CI: 1.03, 1.40). Consumption of other types of fish, except fish paste, was not significantly associated with preterm birth risk. CONCLUSIONS Fish paste consumption may increase the risk of preterm birth. Further studies are required to confirm this association.
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Affiliation(s)
- Kazue Ishitsuka
- Department of Environmental Health, School of Medicine, University of Occupational and Environmental Health
- Departiment of Social Medicine, National Center for Child Health and Development, Tokyo, Japan
| | - Mayumi Tsuji
- Department of Environmental Health, School of Medicine, University of Occupational and Environmental Health
- Regional Center for Japan Environment and Children’s Study, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Megumi Yamamoto
- Department of Environmental Health, School of Medicine, University of Occupational and Environmental Health
- Department of Environment and Public Health, National Institute for Minamata Disease, Minamata, Japan
| | - Rie Tanaka
- Department of Environmental Health, School of Medicine, University of Occupational and Environmental Health
| | - Reiko Suga
- Regional Center for Japan Environment and Children’s Study, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Mami Kuwamura
- Department of Environmental Health, School of Medicine, University of Occupational and Environmental Health
- Department of Pediatrics, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Toshihide Sakuragi
- Department of Environmental Health, School of Medicine, University of Occupational and Environmental Health
| | - Masayuki Shimono
- Regional Center for Japan Environment and Children’s Study, University of Occupational and Environmental Health, Kitakyushu, Japan
- Department of Pediatrics, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Koichi Kusuhara
- Regional Center for Japan Environment and Children’s Study, University of Occupational and Environmental Health, Kitakyushu, Japan
- Department of Pediatrics, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - the Japan Environment and Children’s Study Group
- Department of Environmental Health, School of Medicine, University of Occupational and Environmental Health
- Departiment of Social Medicine, National Center for Child Health and Development, Tokyo, Japan
- Department of Environment and Public Health, National Institute for Minamata Disease, Minamata, Japan
- Regional Center for Japan Environment and Children’s Study, University of Occupational and Environmental Health, Kitakyushu, Japan
- Department of Pediatrics, University of Occupational and Environmental Health, Kitakyushu, Japan
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20
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Muacevic A, Adler JR, Arıca E. Evaluation of Heavy Metal (Lead, Mercury, Cadmium, and Manganese) Levels in Blood, Plasma, and Urine of Adolescents With Aggressive Behavior. Cureus 2023; 15:e33902. [PMID: 36819371 PMCID: PMC9936102 DOI: 10.7759/cureus.33902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/17/2023] [Indexed: 01/20/2023] Open
Abstract
Background Heavy metals can cause health problems by affecting the biological structure even at very low concentrations. Asymptomatic heavy metal poisoning causes non-specific symptoms such as behavioral disorders, difficulty in learning, and aggressive behaviors. There is also a great concern about the incidence of aggressive behavior among adolescents. A few research studies have concluded that a complex interaction or combination of factors leads to an increased risk of aggressive behavior in adolescents. This study aims to determine the correlation between the heavy metal levels in blood, plasma, and urine and the aggression level in adolescents. Materials and methods Two hundred twenty-eight adolescents between the ages of 13 and 19 were enrolled in the study. Blood, plasma, and urine heavy metal levels of the participants were measured by an inductively coupled plasma mass spectrometer (ICP-MS) device (Model 7700x; Agilent, Santa Clara, CA, USA). Buss and Perry's aggression questionnaire was used to investigate the correlation between heavy metals and aggressive behaviors in adolescents. Results Lead blood (r=0.34, p<.01), lead plasma (r=0.22, p<0.01), lead urine (r=0.31, p<.01), mercury blood (r=0.35, p<0.01), mercury urine (r=0.21, p<0.01), manganese blood (r=0.34, p<0.01), manganese plasma (r=0.33, p<0.01) and manganese urine (r=0.39, p<0.01) were positively correlated with tendency to aggression whereas no significant relationship was found between cadmium in blood, plasma, urine and mercury in plasma with aggression. Conclusion The study showed valuable data to associate a significant relationship between adolescents' aggression levels and heavy metals. There is an undeniable relationship between the health of adolescents and environmental pollution caused by heavy metals. Therefore, taking the necessary measures to prevent environmental heavy metal pollution is crucial for adolescent health.
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21
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Tinggi U, Perkins AV. Selenium Status: Its Interactions with Dietary Mercury Exposure and Implications in Human Health. Nutrients 2022; 14. [PMID: 36558469 DOI: 10.3390/nu14245308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 12/05/2022] [Accepted: 12/06/2022] [Indexed: 12/23/2022] Open
Abstract
Selenium is an essential trace element in humans and animals and its role in selenoprotein and enzyme antioxidant activity is well documented. Food is the principal source of selenium, and it is important that selenium status in the body is adequately maintained for physiological functions. There has been increasing attention on the role of selenium in mitigating the toxic effects of mercury exposure from dietary intake in humans. In contrast, mercury is a neurotoxin, and its continuous exposure can cause adverse health effects in humans. The interactions of selenium and mercury are multi-factorial and involve complex binding mechanisms between these elements at a molecular level. Further insights and understanding in this area may help to evaluate the health implications of dietary mercury exposure and selenium status. This review aims to summarise current information on the interplay of the interactions between selenium and mercury in the body and the protective effect of selenium on at-risk groups in a population who may experience long-term mercury exposure.
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22
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Taniguchi Y, Yamazaki S, Nakayama SF, Sekiyama M, Michikawa T, Isobe T, Iwai-Shimada M, Kobayashi Y, Nitta H, Oba M, Kamijima M. Maternal Metals Exposure and Infant Weight Trajectory: The Japan Environment and Children's Study (JECS). Environ Health Perspect 2022; 130:127005. [PMID: 36516017 PMCID: PMC9749893 DOI: 10.1289/ehp10321] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 09/14/2022] [Accepted: 10/14/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND To our knowledge, the association of maternal exposure to metallic elements with weight trajectory pattern from the neonatal period has not been investigated. OBJECTIVES The goals of this study were to identify infant growth trajectories in weight in the first 3 y of life and to determine the associations of maternal blood levels of lead, cadmium, mercury, selenium, and manganese with growth trajectory. METHODS This longitudinal study, part of the Japan Environment and Children Study, enrolled 103,099 pregnant women at 15 Regional Centres across Japan between 2011 and 2014. Lead, cadmium, mercury, selenium, and manganese levels were measured in blood samples collected in the second (14-27 wk gestational age) or third trimester (≥28wk). Growth trajectory of 99,014 children was followed until age 3 y. Raw weight values were transformed to age- and sex-specific weight standard deviation (SD) scores, and latent-class group-based trajectory models were estimated to determine weight trajectories. Associations between maternal metallic element levels and weight trajectory were examined using multinomial logistic regression models after confounder adjustment. RESULTS We identified 5 trajectory patterns based on weight SD score: 4.74% of infants were classified in Group I, very small to small; 31.26% in Group II, moderately small; 21.91% in Group III, moderately small to moderately large; 28.06% in Group IV, moderately large to normal; and 14.03% in Group V, moderately large to large. On multinomial logistic regression, higher maternal lead and selenium levels tended to be associated with increased odds ratios (ORs) of poor weight SD score trajectories (Groups I and II), in comparison with Group III. Higher levels of mercury were associated with decreased ORs, whereas higher levels of manganese were associated with increased ORs of "moderately large" trajectories (Groups IV and V). DISCUSSION Maternal lead, mercury, selenium, and manganese blood levels affect infant growth trajectory pattern in the first 3 y of life. https://doi.org/10.1289/EHP10321.
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Affiliation(s)
- Yu Taniguchi
- 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
| | - Shoji F. Nakayama
- Japan Environment and Children’s Study Programme Office, National Institute for Environmental Studies, Tsukuba, Japan
| | - Makiko Sekiyama
- Japan Environment and Children’s Study Programme Office, National Institute for Environmental Studies, Tsukuba, Japan
| | - Takehiro Michikawa
- Department of Environmental and Occupational Health, Toho University School of Medicine, Ota, 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
| | - Hiroshi Nitta
- Japan Environment and Children’s Study Programme Office, National Institute for Environmental Studies, Tsukuba, Japan
| | - Mari Oba
- Department of Medical Statistics, Toho University School of Medicine, Ota, Japan
| | - Michihiro Kamijima
- Department of Occupational and Environmental Health, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
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23
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Nishihama Y, Nakayama SF, Tabuchi T. Population attributable fraction of risk factors for low birth weight in the Japan Environment and Children's Study. Environ Int 2022; 170:107560. [PMID: 36240622 DOI: 10.1016/j.envint.2022.107560] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/15/2022] [Accepted: 10/02/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Low birth weight (LBW), which is considered a birth weight of <2500 g, poses significant health problems for children. However, population attributable fraction (PAF) of risk factors for LBW have not been well studied. OBJECTIVE We aimed to re-evaluate associations between risk factors for LBW reported in previous studies that used the Japan Environment and Children's Study (JECS) data, and to estimate the magnitude of risk using PAF. METHODS Data including 91,559 mother-child dyads were obtained from JECS. Risk factors identified by previous studies that used JECS data were used to calculate odds ratios for LBW using a Bayesian logistic regression model. Based on calculated odds ratios, the PAF was calculated. RESULTS Parity, history of adenomyosis, hypertension disorder of pregnancy, maternal age at birth, prepregnancy body mass index, gestational weight gain (GWG), maternal smoking and lead (Pb) exposure were all significantly associated with LBW. The sum of the PAF of all factors was 79.4 %, with the largest PAF among single risk factors being GWG (16.5 %); the environmental portion of the PAF (Pb exposure, 14.6 % + maternal smoking, 12.1 %) surpassed the PAF of GWG. CONCLUSION Our findings suggest that the number of births classified as LBW can be reduced by approximately 27% if Pb exposure is reduced to the lowest quartile and maternal smoking is eliminated. Further investigations are needed to identify unknown risk factors for LBW.
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Affiliation(s)
- Yukiko Nishihama
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan.
| | - Shoji F Nakayama
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan.
| | - Takahiro Tabuchi
- Cancer Control Center, Osaka International Cancer Institute, 3-1-69 Otemae, Chuo-ku, Osaka 541-8567, Japan.
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Kobayashi S, Itoh S, Miyashita C, Ait Bamai Y, Yamaguchi T, Masuda H, Itoh M, Yamazaki K, Tamura N, Hanley SJB, Ikeda-Araki A, Saijo Y, Ito Y, Iwai-Shimada M, Yamazaki S, Kamijima M, Kishi R. Impact of prenatal exposure to mercury and selenium on neurodevelopmental delay in children in the Japan environment and Children's study using the ASQ-3 questionnaire: A prospective birth cohort. Environ Int 2022; 168:107448. [PMID: 35964534 DOI: 10.1016/j.envint.2022.107448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 07/27/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023]
Abstract
Neurodevelopmental delay is associated with neurodevelopmental disorders. Prenatal metal exposure can potentially cause neurodevelopmental delays in children. This study examines whether prenatal exposure to mercury (Hg) and selenium (Se) is associated with the risk of neurodevelopmental delays in children up to 4 years of age. Children enrolled in a prospective birth cohort of the Japan Environment and Children's Study were examined. Hg and Se levels in maternal (nchild = 48,731) and cord (nchild = 3,083) blood were analyzed by inductively coupled plasma-mass spectrometry. Neurodevelopmental delays were assessed in children between the ages of 0.5 to 4 years using the Ages and Stages Questionnaires, Third Edition. The association between exposure and outcomes was examined using the generalized estimation equation models. In maternal blood, compared to participants with Se levels in the first quartile (83.0 to < 156 ng/g), the odds ratio (95 % confidence intervals) for problem-solving ability in children of mothers in the third (168 to < 181 ng/g) and fourth quartiles (181 to 976 ng/g) were 1.08 (1.01 to 1.14) and 1.10 (1.04 to 1.17), respectively. Furthermore, communication, gross and fine motor skills, and problem-solving delays were also observed. However, prenatal Hg levels in maternal and cord blood and Se levels in the latter were not associated with neurodevelopmental delays in children. Thus, the findings of this study suggest an association between Se levels in maternal blood and slightly increased risks of neurodevelopmental delays in children up to the age of 4 years.
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Affiliation(s)
- Sumitaka Kobayashi
- Center for Environmental and Health Sciences, Hokkaido University, North-12, West-7, Kita-ku, Sapporo 060-0812, Japan
| | - Sachiko Itoh
- Center for Environmental and Health Sciences, Hokkaido University, North-12, West-7, Kita-ku, Sapporo 060-0812, Japan
| | - Chihiro Miyashita
- Center for Environmental and Health Sciences, Hokkaido University, North-12, West-7, Kita-ku, Sapporo 060-0812, Japan
| | - Yu Ait Bamai
- Center for Environmental and Health Sciences, Hokkaido University, North-12, West-7, Kita-ku, Sapporo 060-0812, Japan
| | - Takeshi Yamaguchi
- Center for Environmental and Health Sciences, Hokkaido University, North-12, West-7, Kita-ku, Sapporo 060-0812, Japan
| | - Hideyuki Masuda
- Center for Environmental and Health Sciences, Hokkaido University, North-12, West-7, Kita-ku, Sapporo 060-0812, Japan
| | - Mariko Itoh
- Center for Environmental and Health Sciences, Hokkaido University, North-12, West-7, Kita-ku, Sapporo 060-0812, Japan
| | - Keiko Yamazaki
- Center for Environmental and Health Sciences, Hokkaido University, North-12, West-7, Kita-ku, Sapporo 060-0812, Japan
| | - Naomi Tamura
- Center for Environmental and Health Sciences, Hokkaido University, North-12, West-7, Kita-ku, Sapporo 060-0812, Japan
| | - Sharon J B Hanley
- Center for Environmental and Health Sciences, Hokkaido University, North-12, West-7, Kita-ku, Sapporo 060-0812, Japan
| | - Atsuko Ikeda-Araki
- Center for Environmental and Health Sciences, Hokkaido University, North-12, West-7, Kita-ku, Sapporo 060-0812, Japan; Faculty of Health Sciences, Hokkaido University, North-12, West-5, Kita-ku, Sapporo 060-0812, Japan
| | - Yasuaki Saijo
- Division of Public Health and Epidemiology, Department of Social Medicine, Asahikawa Medical University, 1-1-1 Midorigaoka-higashi-2-jo, Asahikawa 078-8510, Japan
| | - Yoshiya Ito
- Faculty of Nursing, Japanese Red Cross Hokkaido College of Nursing, 664-1 Akebono-cho, Kitami 090-0011, Japan
| | - Miyuki Iwai-Shimada
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba 305-8506, Japan
| | - Shin Yamazaki
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba 305-8506, Japan
| | - Michihiro Kamijima
- Department of Occupational and Environmental Health, Nagoya City University Graduate School of Medical Sciences, Nagoya, 467-8601 Japan
| | - Reiko Kishi
- Center for Environmental and Health Sciences, Hokkaido University, North-12, West-7, Kita-ku, Sapporo 060-0812, Japan.
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Inoue H, Sanefuji M, Sonoda Y, Ogawa M, Hamada N, Shimono M, Suga R, Nakayama SF, Taniguchi Y, Kusuhara K, Ohga S, Kamijima M; Japan Environment and Children’s Study Group. No association between prenatal lead exposure and neurodevelopment during early childhood in the Japan Environment and Children's Study. Sci Rep 2022; 12:15305. [PMID: 36097036 DOI: 10.1038/s41598-022-19509-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 08/30/2022] [Indexed: 11/18/2022] Open
Abstract
Compared with the relatively well-investigated effects of childhood exposure to lead on neurocognitive deficits, those of prenatal exposure remain relatively inconclusive. We aimed to investigate the association between prenatal blood lead levels and neurodevelopmental delay during the first three years of life. From a prospective cohort of the Japan Environment and Children’s Study, we analyzed a total of 80,759 children. The exposure factors were prenatal lead concentrations measured from maternal whole blood in the second/third trimesters and umbilical cord blood at birth. Neurodevelopment was assessed at 6, 12, 18, 24, 30, and 36 months old using a screening tool, the Ages and Stages Questionnaires, third edition (ASQ). The outcome measures were any suspected neurodevelopmental delay (sNDD) identified via the ASQ during the first (sNDD-1Y), second (sNDD-2Y), and third (sNDD-3Y) years of life. sNDD-1Y, 2Y, and 3Y were identified in 18.0%, 16.2%, and 17.2% of children, respectively. The geometric means of blood lead concentration in this study were much lower (0.62 μg/dL in maternal blood and 0.50 μg/dL in cord blood) than previously investigated levels. Multivariable regression models revealed that there were no associations between maternal blood lead and sNDD-1Y and 2Y and between cord blood lead and sNDD-1Y, 2Y, and 3Y. Although a higher maternal blood lead was associated with a reduced risk of sNDD-3Y (adjusted relative risk: 0.84, 95% confidence interval 0.75–0.94, per 1 increase in common logarithm of lead concentration), there were no dose–response relationships in the analysis using quintiles of lead concentrations. Using a large-scale data set, the present study demonstrated no convincing evidence for an inverse association between levels of prenatal blood lead and neurodevelopment in early childhood. Longitudinal measurements of prenatal and postnatal lead levels are needed to understand the relationship between lead exposure and neurocognitive development.
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Tatsuta N, Iwai-Shimada M, Nakayama SF, Iwama N, Metoki H, Arima T, Sakurai K, Anai A, Asato K, Kuriyama S, Sugawara J, Suzuki K, Yaegashi N, Kamijima M, Nakai K. Association between whole blood metallic elements concentrations and gestational diabetes mellitus in Japanese women: The Japan environment and Children's study. Environ Res 2022; 212:113231. [PMID: 35405127 DOI: 10.1016/j.envres.2022.113231] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 03/24/2022] [Accepted: 03/30/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Exposure to several metallic elements has been suggested as a risk factor for gestational diabetes mellitus (GDM), but inconsistent findings have been reported. This study aimed to examine the association between the maternal whole blood concentration of metallic elements (Hg, Pb, Cd, Mn, and Se) and GDM using the dataset of the Japan Environment and Children's Study (JECS), a nationwide birth cohort study, which was designed to examine the adverse effects of pre/post-natal exposure to hazardous environment. METHODS The data of 78,964 pregnant women who were participants of JECS were used. Blood samples were collected from the pregnant women at second/third trimester of gestation. We employed logistic regression analysis, quantile g-computation (QGC) and a distributed lag nonlinear model (DLNM) to examine the association between the blood concentration of metallic elements and the risk of GDM. RESULTS The prevalence of GDM was 2.1%. In the logistic regression analyses, maternal blood Hg was associated with an increased risk of GDM. In QGC analysis, although metallic elements mixtures were not related to an increased risk of GDM, Hg (52.6%) may be the main contributor. According to the results of DLNM, for maternal exposure to Hg, 4.99 ng/g was identified as its susceptible minimum window for elevated risk of GDM. CONCLUSIONS Our findings highlighted an association between Hg exposure and an increased risk of GDM. Studies of the underlying mechanisms and potential contributing factors, including fish intake, of this association are warranted.
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Affiliation(s)
- Nozomi Tatsuta
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan; Environmental and Genome Research Center Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Miyuki Iwai-Shimada
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki, 305-8506, Japan
| | - Shoji F Nakayama
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki, 305-8506, Japan
| | - Noriyuki Iwama
- Environmental and Genome Research Center Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan; Division of Molecular Epidemiology, Department of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Tohoku University, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Hirohito Metoki
- Environmental and Genome Research Center Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Takahiro Arima
- Environmental and Genome Research Center Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Kasumi Sakurai
- Environmental and Genome Research Center Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Akane Anai
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan; Environmental and Genome Research Center Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Kaname Asato
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan; Environmental and Genome Research Center Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Shinichi Kuriyama
- Environmental and Genome Research Center Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Junichi Sugawara
- Environmental and Genome Research Center Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Kichiya Suzuki
- Environmental and Genome Research Center Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Nobuo Yaegashi
- Environmental and Genome Research Center Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Michihiro Kamijima
- Department of Occupational and Environmental Health, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi, 467-8601, Japan.
| | - Kunihiko Nakai
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan; Environmental and Genome Research Center Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan; School of Sport and Health Science, Tokai Gakuen University, 21-233 Nishinodo, Ukigai-cho, Miyoshi, Aichi, 470-233, Japan.
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Takatani T, Eguchi A, Yamamoto M, Sakurai K, Takatani R, Taniguchi Y, Nakayama SF, Mori C, Kamijima M. Individual and mixed metal maternal blood concentrations in relation to birth size: An analysis of the Japan Environment and Children's Study (JECS). Environ Int 2022; 165:107318. [PMID: 35679738 DOI: 10.1016/j.envint.2022.107318] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 05/15/2022] [Accepted: 05/19/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Growth restriction in the prenatal period is a significant public health concern. Metals can negatively affect birth size, and pregnant women may be exposed to metal mixtures. Comprehensive studies analyzing the effects of combined metal exposure with accurate individual blood metal concentrations are limited. The current study investigated the associations between maternal metal exposure and birth size in a large, nationwide Japanese cohort using individual and mixed model approaches. METHODS Lead, cadmium, mercury, selenium, and manganese blood concentrations were measured in pregnant women in the Japan Environment and Children's Study (JECS). Measurements of infant birth size-including body weight, body length, and head and chest circumference-were collected. Linear and logistic regressions were used for birth size measurements and the odds of an infant being small in size for gestational age, respectively. Associations between combined metal mixtures and measurements at birth were evaluated using quantile g-computation and Bayesian kernel machine regression (BKMR). RESULTS Of the 103,060 JECS pregnancies, 93,739 mother-infant pairs were analyzed. The linear regression models showed that lead, selenium, cadmium, and manganese-but not mercury-were associated with body weight. Cadmium was associated with length and chest circumference and mercury was associated with head circumference. Quantile g-computation revealed that manganese increased infant birth weight, length, head circumference, and chest circumference. Lead was the strongest negative factor for infant birth weight, length, head circumference, and chest circumference. The BKMR analysis revealed that the metals had an additive, rather than a synergistic effect. CONCLUSION Metal exposure is associated with infant birth size, with lead and manganese playing a more significant role in Japan. The effects of prenatal combined metal exposure at low levels warrant public health attention.
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Affiliation(s)
- Tomozumi Takatani
- Department of Pediatrics, Graduate School of Medicine, Chiba University, Chiba, Japan.
| | - Akifumi Eguchi
- Center for Preventive Medical Sciences, Chiba University, Chiba, Japan
| | - Midori Yamamoto
- Center for Preventive Medical Sciences, Chiba University, Chiba, Japan
| | - Kenichi Sakurai
- Center for Preventive Medical Sciences, Chiba University, Chiba, Japan
| | - Rieko Takatani
- Center for Preventive Medical Sciences, Chiba University, Chiba, Japan
| | - Yu Taniguchi
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Ibaraki, Japan
| | - Shoji F Nakayama
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Ibaraki, Japan
| | - Chisato Mori
- Center for Preventive Medical Sciences, Chiba University, Chiba, Japan; Department of Bioenvironmental Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Michihiro Kamijima
- Department of Occupational and Environmental Health, Nagoya City University, Graduate School of Medical Sciences, Nagoya, Japan.
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Masumoto T, Amano H, Otani S, Kamijima M, Yamazaki S, Kobayashi Y, Kurozawa Y; Japan Environment and Children's Study Group. Association between prenatal cadmium exposure and child development: The Japan Environment and Children's study. Int J Hyg Environ Health 2022; 243:113989. [PMID: 35640466 DOI: 10.1016/j.ijheh.2022.113989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 05/21/2022] [Accepted: 05/23/2022] [Indexed: 11/24/2022]
Abstract
Cadmium is a heavy metal that can be found in soil, air, food, and water. Cadmium has toxic effects on the kidneys, bones, and respiratory system. Prenatal exposure to cadmium has been found to affect the mental development of children, but inconsistent results have been found in different studies. Therefore, it is unknown that prenatal cadmium exposure associated with child development after birth. To elucidate whether cadmium affect the child development or not, we analyzed nation-wide cohort study data, the Japan Environment and Children's Study. Prenatal cadmium concentrations in blood from mothers in the second or third trimester were determined by inductively coupled plasma mass spectrometry. Child development was evaluated using "Ages and Stages" questionnaires. The association between cadmium and child development were investigated by performing logistic regression analyses, multinomial logistic regression analyses and generalized linear mixed model using the child development parameters as dependent variables and the cadmium concentrations in maternal blood as the independent variable. There were significant associations between the cadmium concentration and child development at 6 months, 1 year, and 1.5 years after birth. However, the effect had disappeared at 2 years after birth or later. The number of developmental delays was positively associated with the cadmium concentration after adjusting individual difference. The results indicate that prenatal exposure affects child development, but the effect decreases with age.
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Bartel-Steinbach M, Lermen D, Gwinner F, Schäfer M, Göen T, Conrad A, Weber T, von Briesen H, Kolossa-Gehring M. Long-term monitoring of mercury in young German adults: Time trend analyses from the German Environmental Specimen Bank, 1995-2018. Environ Res 2022; 207:112592. [PMID: 34973943 DOI: 10.1016/j.envres.2021.112592] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 12/14/2021] [Accepted: 12/16/2021] [Indexed: 06/14/2023]
Abstract
As highlighted in the Minamata Convention, Mercury (Hg) in its various forms poses a substantial risk to human health and the environment. The health relevance of Hg is also recognized by the European Human Biomonitoring Initiative (HBM4EU), which classifies Hg as a priority substance, since considerable knowledge and data gaps on Hg exposure levels and their changes over time still exist in Europe. The German Environmental Specimen Bank (German ESB) provides valuable policy relevant data and long-term trends of substance exposure on a national level for international comparison and evaluation. In this study we analysed data of the German ESB on Hg exposure of young adults aged 20 to 29 including data on urinary Hg levels from 1995 to 2018 and whole blood Hg levels from 2001 to 2010. Results show a clear decrease in both, about 86% in urine total daily Hg excretion from 1995 (0.76 μg/L) to 2018 (0.11 μg/L) (n = 10,069) and about 57% in blood concentrations of Hg from 2001 (1.76 μg/L) to 2010 (0.77 μg/L) (n = 4085). Over the investigated timeframe only a few values exceeded the toxicologically derived health based guidance value HBM I for blood and urine, with these exceedances decreasing over time in line with the general trend. The factors mostly influencing Hg excretion identified in this study are dental amalgam as well as fish and seafood consumption. Besides other factors (e.g. age and sex), also airborne Hg exposure appears to be a low but evident influencing factor in Germany. Although a considerable decrease in internal Hg exposure is recognized in the last decades, the current low-level exposure may cause adverse health effects especially to vulnerable groups such as pregnant women and children. To further elucidate and evaluate current exposure sources and to reduce human exposure to Hg, continuous environmental and human biomonitoring is needed.
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Affiliation(s)
| | - Dominik Lermen
- Fraunhofer Institute for Biomedical Engineering IBMT, Sulzbach, Germany
| | - Frederik Gwinner
- Fraunhofer Institute for Biomedical Engineering IBMT, Sulzbach, Germany
| | - Moritz Schäfer
- Institute and Outpatient Clinic of Occupational, Social and Environmental Medicine, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Thomas Göen
- Institute and Outpatient Clinic of Occupational, Social and Environmental Medicine, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - André Conrad
- German Environment Agency (Umweltbundesamt), Berlin, Germany
| | - Till Weber
- German Environment Agency (Umweltbundesamt), Berlin, Germany
| | - Hagen von Briesen
- Fraunhofer Institute for Biomedical Engineering IBMT, Sulzbach, Germany
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Tatsuta N, Nakai K, Nakayama SF, Takeuchi A, Arima T, Yaegashi N, Kamijima M, Yamazaki S, Ohya Y, Kishi R, Hashimoto K, Mori C, Ito S, Yamagata Z, Inadera H, Nakayama T, Iso H, Shima M, Kurozawa Y, Suganuma N, Kusuhara K, Katoh T. Effects of maternal exposure to lead on secondary sex ratio in Japan: The Japan Environment and Children's Study. Sci Total Environ 2022; 817:152726. [PMID: 34995582 DOI: 10.1016/j.scitotenv.2021.152726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 12/01/2021] [Accepted: 12/23/2021] [Indexed: 06/14/2023]
Abstract
A decline in the proportion of male births (secondary sex ratio, SSR) has been seen in several countries including Japan in recent years. Although previous studies have reported that the SSR is affected by exposure to chemical substances such as dioxins and polychlorinated biphenyls, as well as heavy metals such as methylmercury, the effects of lead exposure on the SSR have been little studied. The aim of this study was to determine the association between maternal lead exposure and SSR. In a large-scale nationwide birth cohort study, maternal blood lead level (BLL) was determined using whole blood from the second or third trimester of pregnancy. The association between SSR and maternal BLL was estimated using multivariable logistic models. Binomial distribution was applied to examine the differences in SSR by dividing the participants into five groups based on BLL. The primary outcome was SSR, and the child sex was obtained from the medical record transcripts. Of 104,062 fetal records, 85,171 were examined for analysis. The median maternal BLL was 5.85 ng/g (5th-95th percentile 3.45-10.6 ng/g). The overall proportion of males among participating infants was 0.512. In logistic regression models adjusted for covariates, the analysis revealed an increased odds ratio for SSR with higher blood lead concentrations [Group 2: adjusted OR 1.082, 95% confidence interval 1.037 to 1.129, Group 3: 1.122, 1.074 to 1.171, Group 4: 1.214, 1.163 to 1.268, Group 5: 1.279, 1.224 to 1.336]. Compared to the general birth probability in Japan, the group with low BLL had a lower SSR and the group with high BLL had a higher SSR. Higher maternal lead exposures during pregnancy were associated with increased SSR. Further investigations including assessment of paternal lead exposure are necessary to understand the association between lead exposure and SSR.
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Affiliation(s)
- Nozomi Tatsuta
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
| | - Kunihiko Nakai
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan.
| | - Shoji F Nakayama
- Health and Environmental Risk Division, National Institute for Environmental Studies, Tsukuba 305-8506, Japan
| | - Ayano Takeuchi
- Health and Environmental Risk Division, National Institute for Environmental Studies, Tsukuba 305-8506, Japan
| | - Takahiro Arima
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
| | - Nobuo Yaegashi
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
| | - Michihiro Kamijima
- Department of Occupational and Environmental Health, Nagoya City University Graduate School of Medical Sciences, Nagoya 467-8601, Japan.
| | - Shin Yamazaki
- National Institute for Environmental Studies, Tsukuba, Japan
| | - Yukihiro Ohya
- National Center for Child Health and Development, Tokyo, Japan
| | | | | | | | | | | | | | | | | | | | | | | | - Koichi Kusuhara
- University of Occupational and Environmental Health, Kitakyushu, Japan
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Takeuchi M, Yoshida S, Kawakami C, Kawakami K, Ito S. Association of maternal heavy metal exposure during pregnancy with isolated cleft lip and palate in offspring: Japan Environment and Children’s Study (JECS) cohort study. PLoS One 2022; 17:e0265648. [PMID: 35324965 PMCID: PMC8947080 DOI: 10.1371/journal.pone.0265648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 03/05/2022] [Indexed: 11/24/2022] Open
Abstract
Background Cleft lip and palate (cleft L/P) is one of the most common congenital anomalies and its etiology is assumed to be multifactorial. Recent epidemiological data involving a small number of participants suggested an association between perinatal exposure to heavy metals and cleft L/P in affected children. However, this association requires further investigation in a large cohort. Methods This nested case–control study used a dataset of The Japan Environment and Children’s Study, which is an ongoing research project to investigate the association between environmental factors and mother-child health. Participants were enrolled between 2011 and 2014. From the records of fetuses/children, we extracted data of isolated cleft L/P cases and matched children without cleft L/P at a ratio of 1:10. The exposures of interest were in utero exposure to four metals (mercury [Hg], lead [Pb], cadmium [Cd], and manganese [Mn]), which were sampled from mothers in the second/third trimester. Conditional logistic regression was used to assess the association between heavy metal exposure and isolated cleft L/P. Three sensitivity analyses were conducted to test the robustness of the findings, including the change in case definition and statistical methods. Results Of 104,062 fetal records involving both live-birth and stillbirth, we identified 192 children with isolated cleft L/P and 1,920 matched controls. Overall, the blood metal levels were low (for example, median Pb level was 5.85, 6.22, and 5.75 μg/L in the total cohort, cases, and controls, respectively). Univariate and multivariate analyses showed that levels of none of the four heavy metals in the mother’s blood during pregnancy were associated with the risk of cleft L/P in offspring; the adjusted odds ratios (per 1 μg/L increase) with 95% intervals were 0.96 (0.91–1.03), 1.01 (0.94–1.08), 1.00 (0.61–1.63) and 1.00 (0.97–1.03) for Hg, Pb, Cd and Mn, respectively. The results were consistent in all sensitivity analyses. Conclusions Exposure to these four metals during pregnancy was not associated with isolated cleft L/P at the low exposure level in our cohort.
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Affiliation(s)
- Masato Takeuchi
- Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan
- * E-mail:
| | - Satomi Yoshida
- Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan
| | - Chihiro Kawakami
- Graduate School of Medicine, Yokohama City University, Yokohama, Kanagawa, Japan
| | - Koji Kawakami
- Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan
| | - Shuichi Ito
- Graduate School of Medicine, Yokohama City University, Yokohama, Kanagawa, Japan
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Xu S, Hansen S, Sripada K, Aarsland T, Horvat M, Mazej D, Alvarez MV, Odland JØ. Maternal Blood Levels of Toxic and Essential Elements and Birth Outcomes in Argentina: The EMASAR Study. Int J Environ Res Public Health 2022; 19:ijerph19063643. [PMID: 35329330 PMCID: PMC8954125 DOI: 10.3390/ijerph19063643] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/13/2022] [Accepted: 03/14/2022] [Indexed: 12/04/2022]
Abstract
Pregnant women’s levels of toxic and essential minerals have been linked to birth outcomes yet have not been adequately investigated in South America. In Argentina, n = 696 maternal whole blood samples from Ushuaia (n = 198) and Salta (n = 498) were collected in 2011–2012 among singleton women at 36 ± 12 h postpartum and analyzed for blood concentrations of arsenic (As), cadmium (Cd), mercury (Hg), lead (Pb), copper (Cu), manganese (Mn), selenium (Se) and zinc (Zn). This study examined the associations between maternal elements levels and birth outcomes, and sociodemographic factors contributing to elements levels. Maternal age, parity, body mass index, smoking, and education were linked to concentrations of some but not all elements. In adjusted models, one ln-unit increase in Pb levels was associated with increased gestational age (0.2 weeks, 95% CI = 0.01–0.48) and decreased birth weight (−88.90 g, 95% CI = −173.69 to −4.11) and birth length (−0.46 cm, 95% CI = −0.85 to −0.08) in the Salta sample. Toxic elements concentrations were not associated with birth outcomes in Ushuaia participants. Birth outcomes are multifactorial problems, and these findings provide a foundation for understanding how the body burden of toxic and essential elements, within the socioeconomic context, may influence birth outcomes.
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Affiliation(s)
- Shanshan Xu
- Department of Public Health and Nursing, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway;
- Center for International Health, Department of Global Public Health and Primary Care, University of Bergen, 5009 Bergen, Norway
| | - Solrunn Hansen
- Department of Health and Care Sciences, UiT The Arctic University of Norway, 9037 Tromso, Norway;
| | - Kam Sripada
- Centre for Global Health Inequalities Research (CHAIN), Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway;
- Centre for Digital Life Norway, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
| | - Torbjørn Aarsland
- Research Department, Stavanger University Hospital, 4068 Stavanger, Norway;
| | - Milena Horvat
- Department of Environmental Sciences, Jožef Stefan Institute, 1000 Ljubljana, Slovenia; (M.H.); (D.M.)
| | - Darja Mazej
- Department of Environmental Sciences, Jožef Stefan Institute, 1000 Ljubljana, Slovenia; (M.H.); (D.M.)
| | - Marisa Viviana Alvarez
- Pediatric Department, Hospital Público Materno Infantil de Salta, Sarmiento 1301, Salta 4400, Argentina;
| | - Jon Øyvind Odland
- Department of Public Health and Nursing, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway;
- School of Health Systems and Public Health, Faculty of Health Sciences, University of Pretoria, Pretoria 0002, South Africa
- Correspondence:
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Taniguchi Y, Yamazaki S, Nakayama SF, Sekiyama M, Michikawa T, Isobe T, Iwai-Shimada M, Kobayashi Y, Takagi M, Kamijima M. Baseline Complete Blood Count and Chemistry Panel Profile from the Japan Environment and Children's Study (JECS). Int J Environ Res Public Health 2022; 19:ijerph19063277. [PMID: 35328967 PMCID: PMC8951634 DOI: 10.3390/ijerph19063277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/04/2022] [Accepted: 03/05/2022] [Indexed: 02/05/2023]
Abstract
BACKGROUND The Japan Environment and Children's Study (JECS) is a nationwide birth cohort study of environmental factors affecting children's health and development. We summarize the complete blood count and chemistry panel statistical data from pregnant women enrolled in JECS. METHODS Statistical data of up to 58,056 mother's sample in their first (gestational age ≤ 13 weeks) and second trimester (22-27 weeks) were calculated. RESULTS Mean (SD) values in the first trimester were: white blood cell count, 7866 (1906)/μL; red blood cell count, 417 (33) 104/μL; hemoglobin, 12.4 (1.0) g/dL; hematocrit, 37.1 (2.6)%; mean corpuscular volume, 89.2 (4.7) fL; mean corpuscular hemoglobin, 29.8 (1.9) pg; mean corpuscular hemoglobin concentration, 33.3 (0.9)%; platelet count, 24.8 (5.2) 104/μL; HbA1c, 5.26 (0.26)%; total cholesterol, 181 (28) mg/dL; low density lipoprotein cholesterol, 95 (23) mg/dL; high density lipoprotein cholesterol, 73 (13) mg/dL; free cholesterol, 41 (7) mg/dL; triglycerides, 109 (47) mg/dL; total protein, 6.9 (0.4) g/dL; and albumin, 4.1 (0.2) g/dL. Mean values (SD) in the second trimester were: total cholesterol, 246 (38) mg/dL; free cholesterol, 61 (9) mg/dL; triglycerides, 183 (70) mg/dL; total protein, 6.5 (0.4) g/dL; and albumin, 3.6 (0.2) g/dL. CONCLUSIONS These data will be useful for future JECS studies.
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Affiliation(s)
- Yu Taniguchi
- Japan Environment and Children’s Study Programme Office, National Institute for Environmental Studies, Tsukuba 305-8506, Japan; (Y.T.); (S.F.N.); (M.S.); (T.I.); (M.I.-S.); (Y.K.); (M.T.)
| | - Shin Yamazaki
- Japan Environment and Children’s Study Programme Office, National Institute for Environmental Studies, Tsukuba 305-8506, Japan; (Y.T.); (S.F.N.); (M.S.); (T.I.); (M.I.-S.); (Y.K.); (M.T.)
- Correspondence: ; Tel.: +81-(29)-850-2226
| | - Shoji F. Nakayama
- Japan Environment and Children’s Study Programme Office, National Institute for Environmental Studies, Tsukuba 305-8506, Japan; (Y.T.); (S.F.N.); (M.S.); (T.I.); (M.I.-S.); (Y.K.); (M.T.)
| | - Makiko Sekiyama
- Japan Environment and Children’s Study Programme Office, National Institute for Environmental Studies, Tsukuba 305-8506, Japan; (Y.T.); (S.F.N.); (M.S.); (T.I.); (M.I.-S.); (Y.K.); (M.T.)
| | - Takehiro Michikawa
- Department of Environmental and Occupational Health, Toho University School of Medicine, Ota 143-8540, Japan;
| | - Tomohiko Isobe
- Japan Environment and Children’s Study Programme Office, National Institute for Environmental Studies, Tsukuba 305-8506, Japan; (Y.T.); (S.F.N.); (M.S.); (T.I.); (M.I.-S.); (Y.K.); (M.T.)
| | - Miyuki Iwai-Shimada
- Japan Environment and Children’s Study Programme Office, National Institute for Environmental Studies, Tsukuba 305-8506, Japan; (Y.T.); (S.F.N.); (M.S.); (T.I.); (M.I.-S.); (Y.K.); (M.T.)
| | - Yayoi Kobayashi
- Japan Environment and Children’s Study Programme Office, National Institute for Environmental Studies, Tsukuba 305-8506, Japan; (Y.T.); (S.F.N.); (M.S.); (T.I.); (M.I.-S.); (Y.K.); (M.T.)
| | - Mai Takagi
- Japan Environment and Children’s Study Programme Office, National Institute for Environmental Studies, Tsukuba 305-8506, Japan; (Y.T.); (S.F.N.); (M.S.); (T.I.); (M.I.-S.); (Y.K.); (M.T.)
| | - Michihiro Kamijima
- Department of Occupational and Environmental Health, Nagoya City University Graduate School of Medical Sciences, Nagoya 467-8601, Japan;
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Yamamoto M, Eguchi A, Sakurai K, Nakayama SF, Sekiyama M, Mori C, Kamijima M. Longitudinal analyses of maternal and cord blood manganese levels and neurodevelopment in children up to 3 years of age: The Japan Environment and Children's Study (JECS). Environ Int 2022; 161:107126. [PMID: 35147082 DOI: 10.1016/j.envint.2022.107126] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 01/24/2022] [Accepted: 01/28/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Manganese (Mn) is an essential trace metal and a neurotoxicant. Adverse effects of Mn exposure on the neurodevelopment of children have been reported. However, there is limited information on the effects of maternal exposure during pregnancy. OBJECTIVES We aimed to investigate the association between maternal and cord blood Mn levels and neurodevelopment in children aged between 6 months and 3 years using data from a Japanese nationwide birth cohort study. METHODS We used the data of 63,767 mother-child pairs with maternal blood Mn measurements recorded during the second and third trimester and of 3,787 mother-child pairs with cord blood Mn measurements. Neurodevelopment was assessed using the Japanese version of the Ages and Stages Questionnaires, third edition (J-ASQ-3), which was completed by parents or guardians at 6 months, 1 year, 1.5 years, 2 years, 2.5 years, and 3 years of age. RESULTS The median maternal and cord blood Mn levels were 15.2 and 44.5 ng/g, respectively. After adjusting for covariates, both maternal and cord blood Mn levels were negatively associated with J-ASQ-3 scores. Maternal blood Mn levels were negatively associated with gross motor function scores at all ages except for that at 1.5 years (adjusted β: -0.55 to -1.23 for a two-fold increase in maternal Mn levels). The risk of developmental delay (score below the cut-off) in gross motor function increased at the same time points (adjusted odds ratio: 1.08 to 1.13). In the subgroup, cord blood Mn levels were negatively associated with gross motor function scores at 1, 2, and 2.5 years (adjusted β: -1.84 to -3.27). DISCUSSION Maternal blood Mn levels during pregnancy and cord blood Mn levels were negatively associated with neurodevelopment in children up to 3 years of age. Excessive maternal and fetal exposure to Mn may have adverse effects on neuromotor function in children.
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Affiliation(s)
- Midori Yamamoto
- Center for Preventive Medical Sciences, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan.
| | - Akifumi Eguchi
- Center for Preventive Medical Sciences, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan.
| | - Kenichi Sakurai
- Center for Preventive Medical Sciences, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan.
| | - Shoji F Nakayama
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan.
| | - Makiko Sekiyama
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan.
| | - Chisato Mori
- Center for Preventive Medical Sciences, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan; Department of Bioenvironmental Medicine, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan.
| | - Michihiro Kamijima
- Department of Occupational and Environmental Health, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-ku, Nagoya, Aichi 467-8601, Japan.
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Iwai K, Iwai-Shimada M, Asato K, Nakai K, Kobayashi Y, Nakayama SF, Tatsuta N. Intra- and Inter-Day Element Variability in Human Breast Milk: Pilot Study. Toxics 2022; 10:toxics10030109. [PMID: 35324734 PMCID: PMC8951413 DOI: 10.3390/toxics10030109] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 02/14/2022] [Accepted: 02/19/2022] [Indexed: 12/10/2022]
Abstract
For infants in the first months of life, breast milk is a complete source of nutrition; however, it can also contain elements that are harmful to the infant. It is therefore critical for infant health to characterize breast milk. The aim of this study was to determine the intra- and inter-day variation of elements in breast milk, for which there is currently limited information, as a pilot study for a larger study. Firstly, we developed a simple and robust analytical method for the determination of multiple elements in breast milk. It was accurate (accuracy ranged from 98% to 107%) for measurement of 26 elements in breast milk by quadrupole inductively coupled plasma-mass spectrometry. Intra- and inter-day variation of elements, protein, and fat in breast milk was determined by analyzing breast milk collected from 11 women at 12 sampling points over three days and calculating intraclass correlation coefficients. Intraclass correlation coefficients showed that while some elements were consistent across time points (e.g., Sr, Ca, and Cu), others showed very high variability (e.g., As, Cd, and Ni). Correlation analyses between elements in breast milk showed strong relationships between those including Fe and Mo, Ca and Sr, and Cd and Fe.
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Affiliation(s)
- Kenta Iwai
- Health and Environmental Risk Division, National Institute for Environmental Studies, Tsukuba 305-8506, Japan; (K.I.); (M.I.-S.); (Y.K.)
| | - Miyuki Iwai-Shimada
- Health and Environmental Risk Division, National Institute for Environmental Studies, Tsukuba 305-8506, Japan; (K.I.); (M.I.-S.); (Y.K.)
| | - Kaname Asato
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan; (K.A.); (K.N.)
| | - Kunihiko Nakai
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan; (K.A.); (K.N.)
| | - Yayoi Kobayashi
- Health and Environmental Risk Division, National Institute for Environmental Studies, Tsukuba 305-8506, Japan; (K.I.); (M.I.-S.); (Y.K.)
| | - Shoji F. Nakayama
- Health and Environmental Risk Division, National Institute for Environmental Studies, Tsukuba 305-8506, Japan; (K.I.); (M.I.-S.); (Y.K.)
- Correspondence: (S.F.N.); (N.T.)
| | - Nozomi Tatsuta
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan; (K.A.); (K.N.)
- Correspondence: (S.F.N.); (N.T.)
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Irie F. Commentary on the Risk Assessment of Lead by the Food Safety Commission of Japan. Food Saf (Tokyo) 2022; 10:102-11. [PMID: 36237398 PMCID: PMC9509536 DOI: 10.14252/foodsafetyfscj.d-22-00007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 09/06/2022] [Indexed: 11/21/2022] Open
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Liu J, Jin L, Ren A. Nutritional Status of Selenium and Its Association with Diet and Indoor Air Pollution among Pregnant Women in a Rural Area of Northern China. Int J Environ Res Public Health 2021; 18:ijerph182212090. [PMID: 34831845 PMCID: PMC8621723 DOI: 10.3390/ijerph182212090] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 11/12/2021] [Accepted: 11/13/2021] [Indexed: 11/16/2022]
Abstract
The nutritional status of selenium (Se) in pregnant women in rural areas of northern China and its association with diet and indoor air pollution are rarely reported. We recruited 273 pregnant women in early or middle term in Shanxi and Hebei province and detected their fasting blood selenium. Demographic characteristics, food habits, and indoor air pollution exposure were collected with a questionnaire. Multivariate logistic regression models were used to estimate the adjusted odds ratios (AORs) and their 95% confidence intervals for the factors and relatively low blood levels of Se (below the lower quartile). The median (interquartile range [IQR]) blood concentration of Se was 117.35 (103.90, 129.23) μg/L. The rate of Se deficiency was 4.8%, and the rate of overnutrition was 23.8%. The AORs for the risk for relatively low blood levels of Se were 2.26 (1.15, 4.44) for consuming less beef and pork/mutton; 0.39 (0.19, 0.80) for a lower frequency of vinegar consumption; and 1.41 (0.76, 2.60) and 1.18 (0.59, 2.36) for passive smoking and indoor coal pollution, respectively. In conclusion, the nutritional status of Se in pregnant women in a rural area of northern China was acceptable; diet was the main determinant; no conclusive association was found between indoor air pollution and Se nutritional status.
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Affiliation(s)
| | - Lei Jin
- Correspondence: ; Tel.: +86-10-8280-1581-810
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Ma C, Iwai-Shimada M, Nakayama SF, Isobe T, Kobayashi Y, Tatsuta N, Taniguchi Y, Sekiyama M, Michikawa T, Yamazaki S, Kamijima M. Association of prenatal exposure to cadmium with neurodevelopment in children at 2 years of age: The Japan Environment and Children's Study. Environ Int 2021; 156:106762. [PMID: 34256298 DOI: 10.1016/j.envint.2021.106762] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 06/16/2021] [Accepted: 07/05/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Prenatal cadmium exposure has been associated with adverse neurodevelopmental outcomes. However, previous findings are contradictory, and little is known about the potential modifiers of the cadmium-related neurodevelopmental risk. We investigated the associations between prenatal cadmium exposure and neurodevelopment in 2-year-old children and examined the influence of mother/child characteristics. METHODS We recruited 3545 mother-child pairs from the Japan Environment and Children's Study. We collected maternal blood during mid/late pregnancy and cord blood at delivery, and measured cadmium concentrations using inductively coupled plasma mass spectrometry. Neurodevelopment was assessed using the Kyoto Scale of Psychological Development (KSPD), which includes cognitive-adaptive (C-A), language-social (L-S), postural-motor (P-M) and developmental quotient (DQ) domains. Associations between cadmium and KSPD scores were tested using multivariable models after controlling for confounders. RESULTS Median levels (interquartile ranges) of cadmium in maternal and cord blood were 0.70 (0.52-0.95) and 0.04 (0.03-0.06) μg/L, respectively. Maternal blood cadmium concentrations were inversely associated with P-M scores in boys (β = -1.4, 95% confidence interval (CI): -2.7, -0.038), DQ in children of mothers who smoked during pregnancy (β = -2.9, 95% CI: -5.7, -0.12), P-M (β = -5.4, 95% CI: -10, -0.67), C-A (β = -6.1, 95% CI: -11, -1.8), L-S (β = -9.0, 95% CI: -13, -4.8) and DQ scores (β = -6.4, 95% CI: -9.6, -3.1) in children born to mothers with gestational diabetes. Cord blood cadmium concentrations were negatively associated with L-S scores (β = -6.0., 95% CI: -11, -0.91) in children born to mothers with gestational diabetes. CONCLUSIONS Prenatal cadmium exposure was negatively associated with neurodevelopment in boys, in children whose mothers smoked, and in children born to mothers with gestational diabetes. Further studies in other populations are needed to confirm our findings.
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Affiliation(s)
- Chaochen Ma
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
| | - Miyuki Iwai-Shimada
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
| | - Shoji F Nakayama
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan.
| | - Tomohiko Isobe
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
| | - Yayoi Kobayashi
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
| | - Nozomi Tatsuta
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai, Miyagi 980-8575, Japan
| | - Yu Taniguchi
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
| | - Makiko Sekiyama
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
| | - Takehiro Michikawa
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan; Department of Environmental and Occupational Health, School of Medicine, Toho University, Tokyo 143-8540, Japan
| | - Shin Yamazaki
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
| | - Michihiro Kamijima
- Department of Occupational and Environmental Health, Nagoya City University Graduate School of Medical Sciences, Nagoya 467-8601, Japan.
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Zhang W, Chen J, Xiao G, Su W, Li A, Liu P, Zhang W, Zhou X, Xu C, Wang L. A hydrogel electrochemical electrode for simultaneous measurement of cadmium ions and lead ions. J Electroanal Chem (Lausanne) 2021; 901:115756. [DOI: 10.1016/j.jelechem.2021.115756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Miyashita C, Saijo Y, Ito Y, Ikeda-Araki A, Itoh S, Yamazaki K, Kobayashi S, Ait Bamai Y, Masuda H, Tamura N, Itoh M, Yamaguchi T, Yamazaki S, Kishi R, The Japan Environment And Children's Study Group. Association between the Concentrations of Metallic Elements in Maternal Blood during Pregnancy and Prevalence of Abdominal Congenital Malformations: The Japan Environment and Children's Study. Int J Environ Res Public Health 2021; 18:10103. [PMID: 34639405 DOI: 10.3390/ijerph181910103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 09/14/2021] [Accepted: 09/16/2021] [Indexed: 11/22/2022]
Abstract
Abdominal congenital malformations are responsible for early mortality, inadequate nutrient intake, and infant biological dysfunction. Exposure to metallic elements in utero is reported to be toxic and negatively impacts ontogeny. However, no prior study has sufficiently evaluated the effects of exposure to metallic elements in utero on abdominal congenital malformations. The aim of the present study was to evaluate associations between metallic elements detected in maternal blood during pregnancy and congenital abdominal malformations. Data from participants in the Japan Environment and Children’s Study was used in the present study, and contained information on singleton and live birth infants without congenital abnormalities (control: n = 89,134) and abdominal malformations (case: n = 139). Heavy metals such as mercury (Hg), lead (Pb), cadmium (Cd), and trace elements of manganese (Mn) and selenium (Se) were detected in maternal serum samples during mid- and late-gestation. Infant congenital abnormalities were identified from delivery records at birth or one month after birth by medical doctors. In a multivariate analysis adjusted to account for potential confounders, quartiles of heavy metals and trace elements present in maternal blood were not statistically correlated to the prevalence of abdominal congenital malformations at birth. This study is the first to reveal the absence of significant associations between exposure levels to maternal heavy metals and trace elements in utero and the prevalence of abdominal congenital malformations in a large cohort of the Japanese population. Further studies are necessary to investigate the impact of exposure to heavy metals and trace elements via maternal blood in offspring after birth.
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Irizar A, Molinuevo A, Andiarena A, Jimeno-Romero A, San Román A, Broberg K, Llop S, Soler-Blasco R, Murcia M, Ballester F, Lertxundi A. Prenatal manganese serum levels and neurodevelopment at 4 years of age. Environ Res 2021; 197:111172. [PMID: 33857462 DOI: 10.1016/j.envres.2021.111172] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 04/02/2021] [Accepted: 04/08/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND The excess of manganese (Mn) causes severe deleterious effects in the central nervous system, and the developing brain is especially sensitive to Mn overload. However, results of prospective studies regarding Mn neurodevelopmental effects remain inconclusive. The present study aims at studying the association of prenatal Mn exposure and neurodevelopment at 4-5 years of age. METHODS Mn serum concentration was measured in 1465 pregnant women from the INMA (INfancia y MedioAmbiente, Environment and Childhood) Project. Neurodevelopment was assessed using a standardized version of the McCarthy Scales of Children's Abilities (MSCA). Multivariate regression models were used for data analysis. RESULTS No association was found between Mn levels in serum and any of the McCarthy scales. However, the stratification by sex showed a positive and beneficial association of prenatal Mn levels and the verbal, quantitative and general-cognitive scales in girls (β (95%CI): 4 (0.03, 7.96), 4.5 (0.43, 8.57) and 4.32 (0.6, 8.05), respectively). CONCLUSIONS A beneficial association was found for the first time between prenatal Mn levels measured in serum and neurodevelopment of female offspring at 4 years of age, which could have implications on public health policies, specifically on the establishment of policies promoting prenatal health related to dietary deficits of micronutrients such as Mn.
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Affiliation(s)
- Amaia Irizar
- Biodonostia Health Research Institute, Group of Environmental Epidemiology and Child Development, Paseo Doctor Begiristain s/n, 20014, San Sebastian, Spain; Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, C/Monforte de Lemos 3-5, 28029, Madrid, Spain; Department of Preventive Medicine and Public Health, Faculty of Medicine, University of the Basque Country (UPV/EHU), 48940, Leioa, Spain; Department of Social Psychology and Methodology of Behavioral Sciences, Faculty of Psychology, University of the Basque Country (UPV/EHU), Avenida Tolosa 70, 20018, San Sebastian, Spain.
| | - Amaia Molinuevo
- Biodonostia Health Research Institute, Group of Environmental Epidemiology and Child Development, Paseo Doctor Begiristain s/n, 20014, San Sebastian, Spain
| | - Ainara Andiarena
- Biodonostia Health Research Institute, Group of Environmental Epidemiology and Child Development, Paseo Doctor Begiristain s/n, 20014, San Sebastian, Spain; Department of Social Psychology and Methodology of Behavioral Sciences, Faculty of Psychology, University of the Basque Country (UPV/EHU), Avenida Tolosa 70, 20018, San Sebastian, Spain
| | - Alba Jimeno-Romero
- Department of Preventive Medicine and Public Health, Faculty of Medicine, University of the Basque Country (UPV/EHU), 48940, Leioa, Spain
| | - Anne San Román
- Department of Analytical Chemistry, University of the Basque Country (UPV/EHU), Leioa, Basque Country, Spain; Research Centre for Experimental Marine Biology and Biotechnology, University of the Basque Country (PiE-UPV/EHU), Plentzia, Basque, Spain
| | - Karin Broberg
- Unit of Metals and Health, Institute of Environmental Medicine, Karolinska Institute, Stockholm, Sweden
| | - Sabrina Llop
- Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, C/Monforte de Lemos 3-5, 28029, Madrid, Spain; Epidemiology and Environmental Health Joint Research Unit, FISABIO-Universitat Jaume I-Universitat de València, Valencia, Spain
| | - Raquel Soler-Blasco
- Epidemiology and Environmental Health Joint Research Unit, FISABIO-Universitat Jaume I-Universitat de València, Valencia, Spain
| | - Mario Murcia
- Epidemiology and Environmental Health Joint Research Unit, FISABIO-Universitat Jaume I-Universitat de València, Valencia, Spain; Health Information Systems Analysis Service, Conselleria de Sanitat, Generalitat Valenciana, Valencia, Spain
| | - Ferran Ballester
- Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, C/Monforte de Lemos 3-5, 28029, Madrid, Spain; Epidemiology and Environmental Health Joint Research Unit, FISABIO-Universitat Jaume I-Universitat de València, Valencia, Spain; Department of Nursing, Universitat de València, Valencia, Spain
| | - Aitana Lertxundi
- Biodonostia Health Research Institute, Group of Environmental Epidemiology and Child Development, Paseo Doctor Begiristain s/n, 20014, San Sebastian, Spain; Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, C/Monforte de Lemos 3-5, 28029, Madrid, Spain; Department of Preventive Medicine and Public Health, Faculty of Medicine, University of the Basque Country (UPV/EHU), 48940, Leioa, Spain
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Lee MS, Eum KD, Golam M, Quamruzzaman Q, Kile ML, Mazumdar M, Christiani DC. Umbilical Cord Blood Metal Mixtures and Birth Size in Bangladeshi Children. Environ Health Perspect 2021; 129:57006. [PMID: 33989040 PMCID: PMC8121379 DOI: 10.1289/ehp7502] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 04/09/2021] [Accepted: 04/23/2021] [Indexed: 05/19/2023]
Abstract
BACKGROUND Studies have evaluated environmental exposure to toxic metals such as arsenic (As), cadmium (Cd), manganese (Mn), or lead (Pb) on birth size; however, information on potential effects of exposures to metal mixtures is limited. OBJECTIVES We assessed the association between metal mixtures (As, Cd, Mn, Pb) in umbilical cord blood and neonate size in Bangladeshi children. METHODS In this birth cohort study, pregnant women who were ≥18 years of age with an ultrasound-confirmed singleton pregnancy of ≤16wk gestation were recruited from two Bangladesh clinics between 2008 and 2011. Neonate size metrics were measured at the time of delivery. Metals in cord blood were measured using inductively coupled plasma mass spectrometry. We employed multivariable linear regression and Bayesian kernel machine regression (BKMR) to estimate associations of individual metals and metal mixtures with birth size parameters. RESULTS Data from 1,088 participants was assessed. We found a significant negative association between metal mixture and birth length and head circumference when all metal concentrations were above the 60th and 55th percentiles, respectively, compared with the median. An interquartile range (IQR) increase in log Cd concentration {log[Cd (in micrograms per deciliter)] IQR=2.51} was associated with a 0.13-standard deviation (SD) decrease in mean birth length (95% CI: -0.25, -0.02) and a 0.17-SD decrease in mean head circumference (95% CI: -0.28, -0.05), based on linear regression models adjusted for covariates and the other metals. An IQR increase in log Mn concentration {log[Mn (in micrograms per deciliter)] IQR=0.69} was associated with a 0.07-SD decrease in mean birth weight (95% CI: -0.15, 0.002). DISCUSSION Metal mixtures in cord blood were associated with reduced birth size in Bangladeshi children. Results from linear regression models adjusted and the BKMR mixtures analyses suggest adverse effects of Cd and Mn, as individual metal exposures, on birth size outcomes. https://doi.org/10.1289/EHP7502.
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Affiliation(s)
- Mi-Sun Lee
- Environmental and Occupational Medicine and Epidemiology Program, Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Ki-Do Eum
- Department of Civil and Environmental Engineering, School of Engineering, Tufts University, Medford, Massachusetts, USA
| | | | | | - Molly L. Kile
- College of Public Health and Human Science, Oregon State University, Corvallis, Oregon, USA
| | - Maitreyi Mazumdar
- Environmental and Occupational Medicine and Epidemiology Program, Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
- Department of Neurology, Boston Children’s Hospital, Boston, Massachusetts, USA
| | - David C. Christiani
- Environmental and Occupational Medicine and Epidemiology Program, Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
- Massachusetts General Hospital/Harvard Medical School, Boston, Massachusetts, USA
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Tong M, Yu J, Liu M, Li Z, Wang L, Yin C, Ren A, Chen L, Jin L. Total mercury concentration in placental tissue, a good biomarker of prenatal mercury exposure, is associated with risk for neural tube defects in offspring. Environ Int 2021; 150:106425. [PMID: 33581418 DOI: 10.1016/j.envint.2021.106425] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 01/26/2021] [Accepted: 01/27/2021] [Indexed: 06/12/2023]
Abstract
OBJECTIVE To examine the role of total mercury (T-Hg) in placenta as a biomarker of prenatal mercury (Hg) exposure and determine the association between prenatal Hg exposure and risk for neural tube defects (NTDs) in offspring. METHODS Total Hg concentrations in placental tissue were detected in 408 NTD cases and 593 healthy controls enrolled in Shanxi province in northern China. Methylmercury (MeHg) and T-Hg were also detected in the umbilical cord of 147 NTD cases and 140 healthy controls. In addition, MeHg and T-Hg were detected in fetal kidney, liver, and brain tissues of 51 NTD cases. Spearman's rank correlation (rs) was used to evaluate the correlations between placental T-Hg and T-Hg in umbilical cord and fetal kidney, liver, and brain tissues. The Wilcoxon rank-sum test was used to compare T-Hg amounts between case and control groups. Logistic regression was used to examine the association between placental T-Hg and risk for NTDs. RESULTS Placental T-Hg was significantly correlated with T-Hg in umbilical cord (rs = 0.479), kidney (rs = 0.718), liver (rs = 0.656), and brain (rs = 0.512) tissues (all p < 0.001). The median (25th percentile-75th percentile) concentration for placental T-Hg in the NTD case group was 8.91 (5.00-17.1) ng/g dry weight (d.w.), significantly higher than that in the healthy control group (4.99 [3.26-7.93] ng/g d.w., p < 0.001). After adjusting for potential confounders, higher levels of T-Hg in placenta were associated with increased risk for NTDs in offspring (OR = 1.76, 95% CI: 1.13-2.76), and a dose-response relationship was found (p < 0.001). CONCLUSION The concentration of T-Hg in placenta is a good biomarker for estimating prenatal Hg exposure, which is associated with increased risk for NTDs.
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Affiliation(s)
- Mingkun Tong
- Institute of Reproductive and Child Health, Peking University/Key Laboratory of Reproductive Health, the National Health Commission of the People's Republic of China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - Jingru Yu
- Institute of Reproductive and Child Health, Peking University/Key Laboratory of Reproductive Health, the National Health Commission of the People's Republic of China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - Ming Liu
- State Environmental Protection Key Laboratory of Urban Ecological Environment Simulation and Protection, South China Institute of Environmental Sciences, Ministry of Ecology and Environment of the People's Republic of China, Guangzhou 510655, China
| | - Zhiwen Li
- Institute of Reproductive and Child Health, Peking University/Key Laboratory of Reproductive Health, the National Health Commission of the People's Republic of China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - Linlin Wang
- Institute of Reproductive and Child Health, Peking University/Key Laboratory of Reproductive Health, the National Health Commission of the People's Republic of China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - Chenghong Yin
- Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100026, China
| | - Aiguo Ren
- Institute of Reproductive and Child Health, Peking University/Key Laboratory of Reproductive Health, the National Health Commission of the People's Republic of China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - Laiguo Chen
- State Environmental Protection Key Laboratory of Urban Ecological Environment Simulation and Protection, South China Institute of Environmental Sciences, Ministry of Ecology and Environment of the People's Republic of China, Guangzhou 510655, China.
| | - Lei Jin
- Institute of Reproductive and Child Health, Peking University/Key Laboratory of Reproductive Health, the National Health Commission of the People's Republic of China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China.
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Iwai-Shimada M, Kobayashi Y, Isobe T, Nakayama SF, Sekiyama M, Taniguchi Y, Yamazaki S, Michikawa T, Oda M, Mitsubuchi H, Sanefuji M, Ohga S, Mise N, Ikegami A, Suga R, Shimono M. Comparison of Simultaneous Quantitative Analysis of Methylmercury and Inorganic Mercury in Cord Blood Using LC-ICP-MS and LC-CVAFS: The Pilot Study of the Japan Environment and Children's Study. Toxics 2021; 9:toxics9040082. [PMID: 33918897 PMCID: PMC8069649 DOI: 10.3390/toxics9040082] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 04/01/2021] [Accepted: 04/06/2021] [Indexed: 11/16/2022]
Abstract
Prenatal exposure to methylmercury (MeHg) affects child development after birth. However, many epidemiological studies have evaluated total mercury levels without analyzing speciation. Biomonitoring of MeHg and inorganic mercury (IHg) is essential to reveal each exposure level. In this study, we compared a high-throughput analysis for mercury speciation in blood using liquid chromatography-inductively coupled plasma-mass spectrometry (LC-ICP-MS) and liquid chromatography-cold vapor atomic fluorescence spectrometry (LC-CVAFS). The validated LC-ICP-MS method was applied to 101 maternal blood and 366 cord blood samples in the pilot study of the Japan Environment and Children’s Study (JECS). The accuracy of the LC-CVAFS method ranged 90–115% determined by reference material analysis. To evaluate the reliability of 366 cord blood samples, fifty cord blood samples were randomly selected and analyzed using LC-CVAFS. The median (5th–95th percentile) concentrations of MeHg and IHg were 5.4 (1.9–15) and 0.33 (0.12–0.86) ng/mL, respectively, in maternal blood, and 6.3 (2.5–15) and 0.21 (0.08–0.49) ng/mL, respectively, in cord blood. Inter-laboratory comparison showed a relatively good agreement between LC-ICP-MS and LC-CVAFS. The median cord blood:maternal blood ratios of MeHg and IHg were 1.3 and 0.5, respectively. By analyzing speciation, we could focus on the health effects of each chemical form.
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Affiliation(s)
- Miyuki Iwai-Shimada
- Japan Environment and Children’s Study Programme Office, National Institute for Environmental Studies, Tsukuba 305-8506, Japan; (M.I.-S.); (Y.K.); (T.I.); (M.S.); (Y.T.); (S.Y.)
| | - Yayoi Kobayashi
- Japan Environment and Children’s Study Programme Office, National Institute for Environmental Studies, Tsukuba 305-8506, Japan; (M.I.-S.); (Y.K.); (T.I.); (M.S.); (Y.T.); (S.Y.)
| | - Tomohiko Isobe
- Japan Environment and Children’s Study Programme Office, National Institute for Environmental Studies, Tsukuba 305-8506, Japan; (M.I.-S.); (Y.K.); (T.I.); (M.S.); (Y.T.); (S.Y.)
| | - Shoji F. Nakayama
- Japan Environment and Children’s Study Programme Office, National Institute for Environmental Studies, Tsukuba 305-8506, Japan; (M.I.-S.); (Y.K.); (T.I.); (M.S.); (Y.T.); (S.Y.)
- Correspondence:
| | - Makiko Sekiyama
- Japan Environment and Children’s Study Programme Office, National Institute for Environmental Studies, Tsukuba 305-8506, Japan; (M.I.-S.); (Y.K.); (T.I.); (M.S.); (Y.T.); (S.Y.)
| | - Yu Taniguchi
- Japan Environment and Children’s Study Programme Office, National Institute for Environmental Studies, Tsukuba 305-8506, Japan; (M.I.-S.); (Y.K.); (T.I.); (M.S.); (Y.T.); (S.Y.)
| | - Shin Yamazaki
- Japan Environment and Children’s Study Programme Office, National Institute for Environmental Studies, Tsukuba 305-8506, Japan; (M.I.-S.); (Y.K.); (T.I.); (M.S.); (Y.T.); (S.Y.)
| | - Takehiro Michikawa
- Department of Environmental and Occupational Health, School of Medicine, Toho University, Tokyo 143-8540, Japan;
| | - Masako Oda
- The Southern Kyusyu and Okinawa Regional Centre, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan;
| | - Hiroshi Mitsubuchi
- Department of Neonatology, Kumamoto University Hospital, Kumamoto 860-8556, Japan;
| | - Masafumi Sanefuji
- Research Center for Environment and Developmental Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan; (M.S.); (S.O.)
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Shouichi Ohga
- Research Center for Environment and Developmental Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan; (M.S.); (S.O.)
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Nathan Mise
- Department of Environmental and Preventive Medicine, Jichi Medical University, Tochigi 329-0498, Japan; (N.M.); (A.I.)
| | - Akihiko Ikegami
- Department of Environmental and Preventive Medicine, Jichi Medical University, Tochigi 329-0498, Japan; (N.M.); (A.I.)
| | - Reiko Suga
- Regional Center for Japan Environment and Children’s Study, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan; (R.S.); (M.S.)
| | - Masayuki Shimono
- Regional Center for Japan Environment and Children’s Study, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan; (R.S.); (M.S.)
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Hoet P, Jacquerye C, Deumer G, Lison D, Haufroid V. Reference values of trace elements in blood and/or plasma in adults living in Belgium. Clin Chem Lab Med 2021; 59:729-742. [PMID: 33085632 DOI: 10.1515/cclm-2020-1019] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 10/09/2020] [Indexed: 11/15/2022]
Abstract
OBJECTIVES Trace elements (TEs) from natural and anthropogenic sources are ubiquitous. Essential or not, their relevance for human health and disease is constantly expanding. Biological monitoring is a widely integrated tool in risk assessment both in occupational and environmental settings. However, the determination of appropriate and accurate reference values in the (specific) population is a prerequisite for a correct interpretation of biomonitoring data. This study aimed at determining the reference distribution for TEs (Al, As, Sb, Be, Bi, Cd, Co, Cu, Mn, Hg, Mo, Ni, Pb, Se, Tl, Sn, V, Zn) in the blood and/or plasma of the adult population in Belgium. METHODS Blood and plasma samples were analyzed for 178 males and 202 females, recruited according to an a priori selection procedure, by inductively coupled plasma mass spectrometry (ICP-MS). RESULTS Reference values were established with high confidence for AsT, Cd, Cu, HgT, Mn, Mo, Pb, Sn, Se, Tl and Zn. Compared to previously published data in the Belgian population, a decreasing time trend is observed for Zn, Cd and Pb. Globally, the results also indicate that the current exposure levels to TEs in the Belgian population are similar to those from other recent national surveys. CONCLUSIONS These reference values and limits obtained through validated analytical and statistical methods will be useful for future occupational and/or environmental surveys. They will contribute to decision-making concerning both public health policies but also exposure assessments on an individual scale.
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Affiliation(s)
- Perrine Hoet
- Louvain Centre for Toxicology and Applied Pharmacology (LTAP), Université catholique de Louvain, Institute of Experimental and Clinical Research (IREC), Brussels, Belgium
| | | | - Gladys Deumer
- and Cliniques Universitaires Saint-Luc, Laboratory of Analytical Biochemistry, Brussels, Belgium
| | - Dominique Lison
- Louvain Centre for Toxicology and Applied Pharmacology (LTAP), Université catholique de Louvain, Institute of Experimental and Clinical Research (IREC), Brussels, Belgium
| | - Vincent Haufroid
- Louvain Centre for Toxicology and Applied Pharmacology (LTAP), Université catholique de Louvain, Institute of Experimental and Clinical Research (IREC), Brussels, Belgium.,and Cliniques Universitaires Saint-Luc, Laboratory of Analytical Biochemistry, Brussels, Belgium
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Zhou Y, Yan L, Li H, Li X, Liu Y, Liu J. Patterns and Determinants of Essential and Toxic Elements in Chinese Women at Mid-Pregnancy, Late Pregnancy, and Lactation. Nutrients 2021; 13:nu13020668. [PMID: 33669610 PMCID: PMC7922563 DOI: 10.3390/nu13020668] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 02/06/2021] [Accepted: 02/12/2021] [Indexed: 12/13/2022] Open
Abstract
Maternal status of essential and toxic elements affects the health of the mother, developing fetus, or breastfeeding infant. However, few studies have examined the patterns of these elements and their determinants in pregnant or lactating women. Plasma samples of 1211 healthy mid-pregnant, late pregnant, and lactating women enrolled in coastland, lakeland, and inland areas of China from May–July 2014, were analyzed for concentrations of 15 elements, using inductively coupled plasma mass spectrometry. The adjusted median concentrations of elements varied by physiologic stage and region. Lactating versus pregnant women showed higher concentrations of Zn, Cr, Mo, Ni, Sb, Cd and Pb, but lower concentrations of Cu, I, Al and Hg. In pregnant women, the concentrations of Fe, Zn, I, Mo, Ni, Al, Hg and Cd were higher in mid- versus late-pregnancy. Overall, the highest concentrations were observed in Zn, I, Mn, Al, and Pb in coastland, in Hg in lakeland, and in Fe in inland area. Element concentrations varied by maternal age, pre-pregnancy BMI, education, parity, delivery mode, feeding practice, and intakes of aquatic products and mutton. In conclusion, essential and toxic elements coexisted in pregnant and lactating women, and their concentrations varied by physiologic stages, regions, maternal socio-demographic characteristics and dietary factors.
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Affiliation(s)
- Yubo Zhou
- Institute of Reproductive and Child Health/Ministry of Health Key Laboratory of Reproductive Health, Peking University, Beijing 100191, China; (Y.Z.); (H.L.); (X.L.)
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - Lailai Yan
- Department of Laboratorial Science and Technology, School of Public Health, Peking University, Beijing 100191, China; (L.Y.); (Y.L.)
- Medical and Health Analysis Center, School of Public Health, Peking University, Beijing 100191, China
- Vaccine Research Center, School of Public Health, Peking University, Beijing 100191, China
| | - Hongtian Li
- Institute of Reproductive and Child Health/Ministry of Health Key Laboratory of Reproductive Health, Peking University, Beijing 100191, China; (Y.Z.); (H.L.); (X.L.)
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - Xiucui Li
- Institute of Reproductive and Child Health/Ministry of Health Key Laboratory of Reproductive Health, Peking University, Beijing 100191, China; (Y.Z.); (H.L.); (X.L.)
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - Yaqiong Liu
- Department of Laboratorial Science and Technology, School of Public Health, Peking University, Beijing 100191, China; (L.Y.); (Y.L.)
- Medical and Health Analysis Center, School of Public Health, Peking University, Beijing 100191, China
- Vaccine Research Center, School of Public Health, Peking University, Beijing 100191, China
| | - Jianmeng Liu
- Institute of Reproductive and Child Health/Ministry of Health Key Laboratory of Reproductive Health, Peking University, Beijing 100191, China; (Y.Z.); (H.L.); (X.L.)
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
- Correspondence: ; Tel.: +86-10-82801136
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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. Environ Int 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] [What about the content of this article? (0)] [Affiliation(s)] [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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Inadera H, Takamori A, Matsumura K, Tsuchida A, Cui ZG, Hamazaki K, Tanaka T, Ito M, Kigawa M, Origasa H, Michikawa T, Nakayama SF, Isobe T, Takeuchi A, Sato T, Nitta H, Yamazaki S. Association of blood cadmium levels in pregnant women with infant birth size and small for gestational age infants: The Japan Environment and Children's study. Environ Res 2020; 191:110007. [PMID: 32768474 DOI: 10.1016/j.envres.2020.110007] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 07/16/2020] [Accepted: 07/24/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND There is growing evidence of an association between cadmium (Cd) and unfavorable birth outcomes. The effect of Cd exposure on anthropometric measures at birth or small for gestational age (SGA) infants in a large, nationwide Japanese cohort remains to be clarified. OBJECTIVES To analyze the association between maternal blood Cd levels at different sampling times and sex-dependent infant birth size, weight, body length, chest, and head circumferences, in addition to SGA. METHODS Data of 17,584 pregnant women in the Japan Environment and Children's Study were analyzed for anthropometric measurements. For SGA determination, 13,969 cases of vaginal delivery were analyzed after excluding infants born by cesarean section. Maternal blood Cd levels were categorized into quartiles (Q1-Q4), and the Q1 was used as a reference. Multiple linear regression analysis was performed for anthropometric measurements, and multiple logistic regression analysis was used to investigate the association of maternal blood Cd levels with the risk of SGA. RESULTS Birth weight tended to decrease according to the increase in quartiles of blood Cd levels (15.63 g decrease [95% confidence level (CI): -33.26, 2.01] for Q4). The overall analysis revealed no decreases in body length and head and chest circumference, but subgroup analysis revealed that chest circumference tended to decrease according to the increase in quartiles in the female sex/third-trimester stratification (0.16 cm decrease [95% CI: -0.32, 0.00] for Q4). SGA risk was also higher and paralleled the increase in blood Cd levels associated with the female sex/third-trimester group (Odds Ratio 1.90 [95% CI: 1.23, 2.94] for Q4). CONCLUSION Our results provide further evidence of sex-specific health risks associated with Cd exposure in early life in a large Japanese pregnancy cohort.
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Affiliation(s)
- Hidekuni Inadera
- Department of Public Health, Faculty of Medicine, University of Toyama, Toyama, Japan; Toyama Regional Center for JECS, University of Toyama, Toyama, Japan
| | - Ayako Takamori
- Toyama Regional Center for JECS, University of Toyama, Toyama, Japan; Clinical Research Center, Saga University Hospital, Saga, Japan
| | - Kenta Matsumura
- Toyama Regional Center for JECS, University of Toyama, Toyama, Japan
| | - Akiko Tsuchida
- Department of Public Health, Faculty of Medicine, University of Toyama, Toyama, Japan; Toyama Regional Center for JECS, University of Toyama, Toyama, Japan
| | - Zheng-Guo Cui
- Department of Public Health, Faculty of Medicine, University of Toyama, Toyama, Japan
| | - Kei Hamazaki
- Department of Public Health, Faculty of Medicine, University of Toyama, Toyama, Japan; Toyama Regional Center for JECS, University of Toyama, Toyama, Japan
| | - Tomomi Tanaka
- Toyama Regional Center for JECS, University of Toyama, Toyama, Japan; Department of Pediatrics, Faculty of Medicine, University of Toyama, Toyama, Japan
| | - Mika Ito
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Toyama, Toyama, Japan
| | - Mika Kigawa
- Department of Public Health, Faculty of Medicine, University of Toyama, Toyama, Japan; Department of Liberal Arts and Human Development, Kanagawa University of Human Services, Yokosuka, Japan
| | - Hideki Origasa
- Department of Biostatistics and Clinical Epidemiology, Faculty of Medicine, University of Toyama, Toyama, Japan
| | - Takehiro Michikawa
- 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
| | - Ayano Takeuchi
- Department of Preventive Medicine and Public Health, Keio University, Tokyo, 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
| | - Shin Yamazaki
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Tsukuba, Japan.
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Tatsuta N, Nakai K, Kasanuma Y, Iwai-Shimada M, Sakamoto M, Murata K, Satoh H. Prenatal and postnatal lead exposures and intellectual development among 12-year-old Japanese children. Environ Res 2020; 189:109844. [PMID: 32678746 DOI: 10.1016/j.envres.2020.109844] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/16/2020] [Accepted: 06/16/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Low-level lead exposure during childhood is associated with deficit in child IQ. However, the association between prenatal lead exposure and child IQ remains inconsistent. The objective of our study was to examine the association between prenatal/postnatal lead exposure and child IQ at the age of 12. METHODS We obtained data pertaining to cord-blood and child-blood lead levels and IQ for 286 children from a prospective birth cohort study (Tohoku Study of Child Development). IQ was assessed using the Wechsler Intelligence Scale for Children-Fourth Edition. Simultaneously, the Boston Naming Test (BNT) was used to assess the children's language ability. RESULTS The median lead level in the cord blood was 0.8 μg/dL (5th-95th percentiles, 0.4-1.4 μg/dL), and that in the blood of 12-year-old children was 0.7 μg/dL (0.4-1.1 μg/dL). IQ and BNT scores were significantly lower in boys than in girls; therefore, multiple regression analysis was conducted separately for boys and girls. Among boys, IQ was associated with child-blood lead (B = -16.362, p = 0.033) but not cord-blood lead (B = -6.844, p = 0.309). When boys were divided into four groups according to the child-blood lead levels, there was a significant decreasing trend for IQ. The score with cues of the BNT was associated with both cord-blood (B = -5.893, p = 0.025) and child-blood (B = -7.108, p = 0.022) lead concentrations in boys. Among girls, there was no significant association of the outcomes with cord-blood or child-blood lead level. CONCLUSIONS These findings suggest that postnatal lead exposure adversely affects the intellectual ability in boys. Furthermore, the language ability is sensitive to prenatal/postnatal lead exposure in boys.
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Affiliation(s)
- Nozomi Tatsuta
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
| | - Kunihiko Nakai
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan.
| | - Yuichi Kasanuma
- Kesen-numa City Hospital, Kesen-numa 988-0181, Japan; Minami-Kesennuma Medical Clinic 988-0025, Japan
| | - Miyuki Iwai-Shimada
- Centre for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba 305-8506, Japan
| | - Mineshi Sakamoto
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
| | - Katsuyuki Murata
- Akita University Graduate School of Medicine, Akita 010-8543, Japan
| | - Hiroshi Satoh
- Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
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