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Jiang C, Guan J, Tang X, Zhang Y, Li X, Li Y, Chen Z, Zhang J, Li JD. Prenatal low-dose Bisphenol A exposure impacts cortical development via cAMP-PKA-CREB pathway in offspring. Front Integr Neurosci 2024; 18:1419607. [PMID: 39170668 PMCID: PMC11335628 DOI: 10.3389/fnint.2024.1419607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Accepted: 07/18/2024] [Indexed: 08/23/2024] Open
Abstract
Bisphenol A (BPA) is a widely used plasticizer known to cause various disorders. Despite a global reduction in the use of BPA-containing products, prenatal exposure to low-dose BPA, even those below established safety limits, has been linked to neurological and behavioral deficits in childhood. The precise mechanisms underlying these effects remain unclear. In the present study, we observed a significant increase in the number of cortical neurons in offspring born to dams exposed to low-dose BPA during pregnancy. We also found that this prenatal exposure to low-dose BPA led to increased proliferation but reduced migration of cortical neurons. Transcriptomic analysis via RNA sequencing revealed an aberrant activation of the cAMP-PKA-CREB pathway in offspring exposed to BPA. The use of H89, a selective PKA inhibitor, effectively rescued the deficits in both proliferation and migration of cortical neurons. Furthermore, offspring from dams exposed to low-dose BPA exhibited manic-like behaviors, including hyperactivity, anti-depressant-like responses, and reduced anxiety. While H89 normalized hyperactivity, it didn't affect the other behavioral changes. These results suggest that the overactivation of PKA plays a causative role in BPA-induced changes in neuronal development. Our data also indicate that manic-like behaviors induced by prenatal low-dose BPA exposure may be influenced by both altered neuronal development and abnormal PKA signaling in adulthood.
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Affiliation(s)
- Chu Jiang
- Furong Laboratory, Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Animal Models for Human Diseases, Changsha, Hunan, China
- Hunan Key Laboratory of Medical Genetics, Changsha, Hunan, China
| | - Jun Guan
- Furong Laboratory, Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Animal Models for Human Diseases, Changsha, Hunan, China
- Hunan Key Laboratory of Medical Genetics, Changsha, Hunan, China
| | - Xiangrong Tang
- Center for Reproductive Medicine, Women and Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Yichun Zhang
- Furong Laboratory, Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Animal Models for Human Diseases, Changsha, Hunan, China
- Hunan Key Laboratory of Medical Genetics, Changsha, Hunan, China
| | - Xiangyu Li
- Furong Laboratory, Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Animal Models for Human Diseases, Changsha, Hunan, China
- Hunan Key Laboratory of Medical Genetics, Changsha, Hunan, China
| | - Yuting Li
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Zhiheng Chen
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Jing Zhang
- Furong Laboratory, Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Animal Models for Human Diseases, Changsha, Hunan, China
- Hunan Key Laboratory of Medical Genetics, Changsha, Hunan, China
| | - Jia-Da Li
- Furong Laboratory, Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Animal Models for Human Diseases, Changsha, Hunan, China
- Hunan Key Laboratory of Medical Genetics, Changsha, Hunan, China
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Meng L, Ouyang Z, Chen Y, Huang C, Yu Y, Fan R. Low-dose BPA-induced neuronal energy metabolism dysfunction and apoptosis mediated by PINK1/parkin mitophagy pathway in juvenile rats. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 929:172655. [PMID: 38653419 DOI: 10.1016/j.scitotenv.2024.172655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 04/19/2024] [Accepted: 04/19/2024] [Indexed: 04/25/2024]
Abstract
Bisphenol A (BPA) is related to neurological disorders involving mitochondrial dysfunction, while the mechanism remains elusive. Therefore, we explored it through in vitro and in vivo experiments. In vitro, hippocampal neurons derived from neonatal rats of different genders were exposed to 1-100 nM and 100 μM BPA, autophagy activator Rapa and inhibitor 3-MA for 7 d. The results suggested that even nanomolar BPA (1-100 nM) disturbed Ca2+ homeostasis and damaged the integrity of mitochondrial cristae in neurons (p < 0.05). Furthermore, BPA increased the number of autophagic lysosomes, LC3II/LC3I ratio, and p62 expression, and decreased parkin expression (p < 0.05), suggesting that the entry of damaged mitochondria into autophagic pathway was prompted, while the autophagic degradation pathway was blocked. This further disrupts neuronal energy metabolism and promotes neuronal apoptosis. However, Rapa attenuated the adverse effects caused by BPA, while 3-MA exacerbated these reactions. In vivo, exposure of juvenile rats to 0.5, 50, 5000 μg/kg‧bw/day BPA during PND 7-21 markedly impaired the structure of hippocampal mitochondria, increased the number of autophagosomes, the rate of neuronal apoptosis, and the expression levels of pro-apoptotic proteins Cyt C, Bax, Bak1, and Caspase3, and decreased the expression of anti-apoptotic protein Bcl2 (p < 0.05). Particularly, male rats are more sensitive to low-dose BPA than females. Overall, environmental-doses BPA can induce the imbalance of energy metabolism in hippocampal neurons via PINK1/parkin mitophagy, thereby inducing their apoptosis. Importantly, this study provides a theoretical basis for attenuating BPA-related neurological diseases.
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Affiliation(s)
- Lingxue Meng
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, School of Life Sciences, South China Normal University, Guangzhou 510631, China; State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China
| | - Zedong Ouyang
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Yuxin Chen
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Chengmeng Huang
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Yunjiang Yu
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China
| | - Ruifang Fan
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, School of Life Sciences, South China Normal University, Guangzhou 510631, China.
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Han Y, Dai H, Rong X, Jiang H, Xue Y. Research Progress of Methods for Degradation of Bisphenol A. Molecules 2023; 28:8028. [PMID: 38138518 PMCID: PMC10745807 DOI: 10.3390/molecules28248028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 11/30/2023] [Accepted: 12/07/2023] [Indexed: 12/24/2023] Open
Abstract
Bisphenol A (BPA), an endocrine disruptor widely used in industrial production, is found in various environmental sources. Despite numerous reports on BPA degradation and removal, the details remain unclear. This paper aims to address this gap by providing a comprehensive review of BPA degradation methods, focusing on biological, physical, and chemical treatments and the factors that affect the degradation of BPA. Firstly, the paper uses VOSviewer software (version 1.6.15) to map out the literature on BPA degradation published in the past 20 years, which reveals the trends and research focus in this field. Next, the advantages and limitations of different BPA degradation methods are discussed. Overall, this review highlights the importance of BPA degradation to protect the environment and human health. The paper provides significant insights for researchers and policymakers to develop better approaches for BPA degradation and removal.
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Affiliation(s)
- Ying Han
- School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, China; (H.D.); (X.R.); (H.J.)
| | | | | | | | - Yingang Xue
- School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, China; (H.D.); (X.R.); (H.J.)
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Xu X, Wu H, Terry PD, Zhao L, Chen J. Impact of Paraben Exposure on Adiposity-Related Measures: An Updated Literature Review of Population-Based Studies. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph192316268. [PMID: 36498342 PMCID: PMC9740922 DOI: 10.3390/ijerph192316268] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 11/21/2022] [Accepted: 11/22/2022] [Indexed: 05/06/2023]
Abstract
Parabens are alkyl esters of p-hydroxybenzoic acid that are commonly used in pharmaceutical and cosmetic products. Humans are exposed to parabens when they use these products and through diet. There are growing concerns that paraben exposure can adversely impact human health. The endocrine-disrupting and obesogenic properties of parabens have been observed in animal studies and in vitro, prompting the increase in population-based studies of paraben exposure and adiposity-related endpoints. In this review, we summarize epidemiological studies published between 2017 and 2022 that examined paraben exposure in utero, between birth and adolescence, and in adulthood, in relation to adiposity-related measures. Overall, these studies provide some evidence that suggests that paraben exposure, especially during critical development windows, is associated with adiposity-related measures. However, we have noted several limitations in these studies, including the predominance of cross-sectional studies, inconsistent sample collection procedures, and small sample sizes, which should be addressed in future studies.
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Affiliation(s)
- Xinyun Xu
- Department of Nutrition, The University of Tennessee, Knoxville, TN 37996, USA
| | - Haoying Wu
- Department of Nutrition, The University of Tennessee, Knoxville, TN 37996, USA
| | - Paul D. Terry
- Department of Medicine, Graduate School of Medicine, The University of Tennessee, Knoxville, TN 37920, USA
| | - Ling Zhao
- Department of Nutrition, The University of Tennessee, Knoxville, TN 37996, USA
- Correspondence: (L.Z.); (J.C.)
| | - Jiangang Chen
- Department of Public Health, The University of Tennessee, Knoxville, TN 37996, USA
- Correspondence: (L.Z.); (J.C.)
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Mina A, Boutzios G, Papoutsis I, Kaparos G, Christopoulos P, Kousta E, Mastrominas M, Athanaselis S, Mastorakos G. Bisphenol A correlates with fewer retrieved oocytes in women with tubal factor infertility. Hormones (Athens) 2022; 21:305-315. [PMID: 35524040 DOI: 10.1007/s42000-022-00370-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 04/12/2022] [Indexed: 11/04/2022]
Abstract
PURPOSE Serum and urinary bisphenol A (BPA) concentrations have been associated negatively with the number of retrieved oocytes after in vitro fertilization (IVF). The impact of BPA upon women with polycystic ovary syndrome (PCOS) and women with tubal factor infertility (TFI), following IVF, was investigated. To this purpose, associations among serum and urinary and follicular fluid (FF) BPA concentrations and the number of retrieved and fertilized oocytes and comparisons between pregnancy rates were evaluated. METHODS This was a cross-sectional study conducted at a university-affiliated assisted conception unit between January and November 2019, including 93 women of reproductive age (PCOS: 45; TFI: 48) following IVF. Unconjugated FF and serum BPA concentrations and total urinary BPA concentration were measured using a novel gas chromatography-mass spectrometry method. The number of retrieved and fertilized oocytes and pregnancy rate were documented and evaluated. RESULTS The number of oocytes retrieved from PCOS women was greater than that of 21 TFI women, independently of BMI. Lower FF BPA concentrations were found in all PCOS women and in overweight/obese PCOS compared to TFI women (0.50, 0.38, and 1.13 ng/mL, respectively). In TFI women, FF BPA concentrations correlated negatively with the number of retrieved oocytes. Serum and FF and urinary BPA concentrations did not significantly affect the number of fertilized oocytes and pregnancy rate in both groups. CONCLUSION FF BPA concentrations were lower in all PCOS women and in overweight/obese PCOS than in TFI women. In TFI women, FF BPA concentrations correlated negatively with retrieved oocytes. Confirmation of these findings might lead to moderation of use of BPA-containing products by women undergoing IVF.
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Affiliation(s)
- Areti Mina
- Endocrine Unit, Medical School, Aretaieion University Hospital, National and Kapodistrian University of Athens, 76 Vas. Sofias Str, PO Box 11528, Athens, Greece
- Department of Forensic Medicine and Toxicology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Str, PO Box 11527, Athens, Greece
| | - Georgios Boutzios
- Endocrine Unit, Department of Pathophysiology, Medical School, Laiko University Hospital, National and Kapodistrian University of Athens, 75 Mikras Asias Str, PO Box 11527, Athens, Greece
| | - Ioannis Papoutsis
- Department of Forensic Medicine and Toxicology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Str, PO Box 11527, Athens, Greece
| | - George Kaparos
- Hormonal and Biochemical Laboratory, Medical School, Aretaieion University Hospital, National and Kapodistrian University of Athens, 76 Vas. Sofias Str, PO Box 11528, Athens, Greece
| | - Panagiotis Christopoulos
- Endocrine Unit, Medical School, Aretaieion University Hospital, National and Kapodistrian University of Athens, 76 Vas. Sofias Str, PO Box 11528, Athens, Greece
| | - Eleni Kousta
- Endocrine Unit, Medical School, Aretaieion University Hospital, National and Kapodistrian University of Athens, 76 Vas. Sofias Str, PO Box 11528, Athens, Greece
| | - Minas Mastrominas
- Embryogenesis Assisted Conception Unit, Kifisias 49 Avenue, PO Box 15123, Athens, Greece
| | - Sotirios Athanaselis
- Department of Forensic Medicine and Toxicology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Str, PO Box 11527, Athens, Greece
| | - George Mastorakos
- Endocrine Unit, Medical School, Aretaieion University Hospital, National and Kapodistrian University of Athens, 76 Vas. Sofias Str, PO Box 11528, Athens, Greece.
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Welch C, Mulligan K. Does Bisphenol A Confer Risk of Neurodevelopmental Disorders? What We Have Learned from Developmental Neurotoxicity Studies in Animal Models. Int J Mol Sci 2022; 23:ijms23052894. [PMID: 35270035 PMCID: PMC8910940 DOI: 10.3390/ijms23052894] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 03/02/2022] [Accepted: 03/05/2022] [Indexed: 02/01/2023] Open
Abstract
Substantial evidence indicates that bisphenol A (BPA), a ubiquitous environmental chemical used in the synthesis of polycarbonate plastics and epoxy resins, can impair brain development. Clinical and epidemiological studies exploring potential connections between BPA and neurodevelopmental disorders in humans have repeatedly identified correlations between early BPA exposure and developmental disorders, such as attention deficit/hyperactivity disorder and autism spectrum disorder. Investigations using invertebrate and vertebrate animal models have revealed that developmental exposure to BPA can impair multiple aspects of neuronal development, including neural stem cell proliferation and differentiation, synapse formation, and synaptic plasticity-neuronal phenotypes that are thought to underpin the fundamental changes in behavior-associated neurodevelopmental disorders. Consistent with neuronal phenotypes caused by BPA, behavioral analyses of BPA-treated animals have shown significant impacts on behavioral endophenotypes related to neurodevelopmental disorders, including altered locomotor activity, learning and memory deficits, and anxiety-like behavior. To contextualize the correlations between BPA and neurodevelopmental disorders in humans, this review summarizes the current literature on the developmental neurotoxicity of BPA in laboratory animals with an emphasis on neuronal phenotypes, molecular mechanisms, and behavioral outcomes. The collective works described here predominantly support the notion that gestational exposure to BPA should be regarded as a risk factor for neurodevelopmental disorders.
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Affiliation(s)
- Chloe Welch
- Division of Biological Sciences, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA;
| | - Kimberly Mulligan
- Department of Biological Sciences, California State University, Sacramento, 6000 J Street, Sacramento, CA 95819, USA
- Correspondence:
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Ashley-Martin J, Gaudreau É, Dumas P, Liang CL, Logvin A, Bélanger P, Provencher G, Gagne S, Foster W, Lanphear B, Arbuckle TE. Direct LC-MS/MS and indirect GC-MS/MS methods for measuring urinary bisphenol A concentrations are comparable. ENVIRONMENT INTERNATIONAL 2021; 157:106874. [PMID: 34537522 PMCID: PMC8801255 DOI: 10.1016/j.envint.2021.106874] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 08/17/2021] [Accepted: 09/08/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Bisphenol A (BPA) is typically measured in urine using an indirect method that involves enzymatic deconjugation and extraction. In contrast, the direct method measures free and conjugated BPA concurrently and sums them to estimate urinary BPA concentrations. Statistical comparison of total BPA results using the direct and indirect methods is necessary to accurately interpret biomonitoring data for risk assessments. OBJECTIVES To compare urinary BPA concentrations estimated from the indirect and direct methods in duplicate first trimester urine samples collected from 1879 pregnant women from the MIREC Study. METHODS For the indirect method, we measured urinary BPA concentrations using GC-MS/MS. For the direct method, we summed free and conjugated BPA concentrations measured using LC-MS/MS. We evaluated deviation between the two methods using the Bland-Altman analysis in the total sample and stratified (1) by specific gravity and (2) at the limit of quantification (LOQ). RESULTS Median urinary BPA concentrations for the direct and indirect methods were 0.89 µg BPA equivalents/L and 0.81 µg/L respectively. Concentrations from the direct method were, on average, 8.6% (95% CI: 6.7%, 10.5%) higher than the indirect method in a Bland-Altman analysis. The percent differences between the two methods was 4.0% in urines with specific gravities < 1.02 (n = 1348, 72%) and 20.3% in urine with specific gravity ≥ 1.02. In values below the LOQ (n = 663, 35%), we observed smaller average percent deviation (4.8%) between the two methods but wider limits of agreement. DISCUSSION Results from this study, based on the largest statistically rigorous comparison of the direct and indirect methods of BPA measurement, contrast previous findings reporting that the indirect method underestimates total BPA exposure. The difference in urinary BPA concentrations we observed with the indirect and direct methods is unlikely to alter the interpretation of health outcome data.
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Affiliation(s)
- Jillian Ashley-Martin
- Environmental Health Science and Research Bureau, Healthy Environments and Consumer Branch, Health Canada, Canada.
| | - Éric Gaudreau
- Centre de Toxicologie du Québec (CTQ), Institut national de santé publique du Québec (INSPQ), Québec, Canada.
| | - Pierre Dumas
- Centre de Toxicologie du Québec (CTQ), Institut national de santé publique du Québec (INSPQ), Québec, Canada.
| | - Chun Lei Liang
- Environmental Health Science and Research Bureau, Healthy Environments and Consumer Branch, Health Canada, Canada.
| | - Agata Logvin
- Environmental Health Science and Research Bureau, Healthy Environments and Consumer Branch, Health Canada, Canada.
| | - Patrick Bélanger
- Centre de Toxicologie du Québec (CTQ), Institut national de santé publique du Québec (INSPQ), Québec, Canada.
| | - Gilles Provencher
- Centre de Toxicologie du Québec (CTQ), Institut national de santé publique du Québec (INSPQ), Québec, Canada.
| | - Sebastien Gagne
- Centre de Toxicologie du Québec (CTQ), Institut national de santé publique du Québec (INSPQ), Québec, Canada.
| | - Warren Foster
- Department of Obstetrics & Gynaecology and School of Biomedical Engineering, McMaster University, Canada.
| | - Bruce Lanphear
- Faculty of Health Sciences, Simon Fraser University, Canada.
| | - Tye E Arbuckle
- Environmental Health Science and Research Bureau, Healthy Environments and Consumer Branch, Health Canada, Canada.
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Pollock T, Karthikeyan S, Walker M, Werry K, St-Amand A. Trends in environmental chemical concentrations in the Canadian population: Biomonitoring data from the Canadian Health Measures Survey 2007-2017. ENVIRONMENT INTERNATIONAL 2021; 155:106678. [PMID: 34118655 DOI: 10.1016/j.envint.2021.106678] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 05/18/2021] [Accepted: 05/26/2021] [Indexed: 06/12/2023]
Abstract
Ten years of nationally representative biomonitoring data collected between 2007 and 2017 are available from the Canadian Health Measures Survey (CHMS). These data establish baseline environmental chemical concentrations in the general population. Here we sought to evaluate temporal trends in environmental chemical exposures in the Canadian population by quantifying changes in biomarker concentrations measured in the first five two-year cycles of the CHMS. We identified 39 chemicals that were measured in blood or urine in at least three cycles and had detection rates over 50% in the Canadian population. We calculated geometric mean concentrations for each cycle using the survey weights provided. We then conducted analyses of variance to test for linear trends over all cycles. We also calculated the percent difference in geometric means between the first and most recent cycle measured. Of the 39 chemicals examined, we found statistically significant trends across cycles for 21 chemicals. Trends were decreasing for 19 chemicals from diverse chemical groups, including metals and trace elements, phenols and parabens, organophosphate pesticides, per- and polyfluoroalkyl substances, and plasticizers. Significant reductions in chemical concentrations included di-2-ethylhexyl phthalate (DEHP; 75% decrease), perfluorooctane sulfate (PFOS; 61% decrease), perfluorooctanoic acid (PFOA; 58% decrease), dimethylphosphate (DMP; 40% decrease), lead (33% decrease), and bisphenol A (BPA; 32% decrease). Trends were increasing for two pyrethroid pesticide metabolites, including a 110% increase between 2007 and 2017 for 3-phenoxybenzoic acid (3-PBA). No significant trends were observed for the remaining 18 chemicals that included arsenic, mercury, fluoride, acrylamide, volatile organic compounds, and polycyclic aromatic hydrocarbons. National biomonitoring data indicate that concentrations, and therefore exposures, have decreased for many priority chemicals in the Canadian population. Concentrations for other chemical groups have not changed or have increased, although average concentrations remain below thresholds of concern derived from human exposure guidance values. Continued collection of national biomonitoring data is necessary to monitor trends in exposures over time.
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Affiliation(s)
- Tyler Pollock
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada.
| | | | - Mike Walker
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada
| | - Kate Werry
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada
| | - Annie St-Amand
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada
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Gao Q, Niu Y, Wang B, Liu J, Zhao Y, Zhang J, Wang Y, Shao B. Estimation of lactating mothers' daily intakes of bisphenol A using breast milk. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 286:117545. [PMID: 34438484 DOI: 10.1016/j.envpol.2021.117545] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 06/02/2021] [Accepted: 06/03/2021] [Indexed: 06/13/2023]
Abstract
Breast milk is a unique biological sample that reflects the exposure levels of both lactating mothers and infants. The exposure levels of BPA due to breast milk consumption for infants can be estimated easily, but the method to estimate the total daily intake (TDI) of lactating mothers from breast milk has not yet been established. In this study, BPA concentrations were detected in breast milk samples from 149 lactating mothers from Hunan, China. The median concentration of BPA in breast milk was 0.053 μg/L with a range of 0.001-2.535 μg/L, and a temporal decline trend was found for BPA concentrations in breast milk (p < 0.05). The median intake of BPA via breast milk was 26.8 ng/kg bw/day for 0-3-month-old infants and 7.0 ng/kg bw/day for 4-12-month-old infants. Based on the predicted concentrations of BPA in urine and blood via the conversion coefficients from breast milk, the TDIs of lactating mothers were estimated. The TDIs estimated from the simulated urine concentration were 84.0 ± 175.2 ng/kg bw/day for 0-3-month-old infants' mothers and 36.9 ± 80.8 ng/kg bw/day for 4-12-month-old infants' mothers. The dietary daily intakes estimated from the simulated blood concentration were 579.6 ± 370.8 ng/kg bw/day for 0-3-month-old infants' mothers and 280.1 ± 195.2 ng/kg bw/day for 4-12-month-old infants' mothers. When assuming the dietary daily intakes in Hunan of the fifth total diet study (TDS) as the "true" total dietary intake of our population, the contribution of diet was estimated to be 63.7%, which suggested that non-dietary BPA exposure may be underestimated.
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Affiliation(s)
- Qun Gao
- Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food Poisoning, Beijing Center for Disease Prevention and Control, Beijing, 100013, China; College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Yumin Niu
- Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food Poisoning, Beijing Center for Disease Prevention and Control, Beijing, 100013, China
| | - Bin Wang
- Chinese Academy of Inspection and Quarantine Comprehensive Test Center, Beijing, 100123, China
| | - Jiaying Liu
- Department of Nurition and Health, China Agricultural University, Beijing, 100193, China
| | - Yunfeng Zhao
- NHC Key Laboratory of Food Safety Risk Assessment, China National Center for Food Safety Risk Assessment, Beijing 100021, China
| | - Jing Zhang
- Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food Poisoning, Beijing Center for Disease Prevention and Control, Beijing, 100013, China
| | - Yang Wang
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Bing Shao
- Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food Poisoning, Beijing Center for Disease Prevention and Control, Beijing, 100013, China; College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
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Rajkumar A, Luu T, Beal MA, Barton-Maclaren TS, Robaire B, Hales BF. Elucidation of the Effects of Bisphenol A and Structural Analogs on Germ and Steroidogenic Cells Using Single Cell High-Content Imaging. Toxicol Sci 2021; 180:224-238. [PMID: 33501994 DOI: 10.1093/toxsci/kfab012] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Concerns about the potential adverse effects of bisphenol A (BPA) have led to an increase in the use of replacements, yet the toxicity data for several of these chemicals are limited. Using high-content imaging, we compared the effects of BPA, BPAF, BPF, BPS, BPM, and BPTMC in germ (C18-4 spermatogonial) and steroidogenic (MA-10 Leydig and KGN granulosa) cell lines. Effects on cell viability and phenotypic markers were analyzed to determine benchmark concentrations (BMCs) and estimate administered equivalent doses (AEDs). In all 3 cell lines, BPA was one of the least cytotoxic bisphenol compounds tested, whereas BPM and BPTMC were the most cytotoxic. Interestingly, BPF and BPS were cytotoxic only in MA-10 cells. Effects on phenotypic parameters, including mitochondria, lysosomes, lipid droplets, and oxidative stress, were both bisphenol- and cell-line specific. BPA exposure affected mitochondria (BMC: 1.2 μM; AED: 0.09 mg/kg/day) in C18-4 cells. Lysosome numbers were increased in MA-10 cells exposed to BPA or BPAF but decreased in KGN cells exposed to BPAF or BPM. Lipid droplets were decreased in C18-4 cells exposed to BPF and in MA-10 cells exposed to BPTMC but increased in BPF, BPM, and BPTMC-exposed KGN cells. BPA and BPM exposure induced oxidative stress in MA-10 and KGN cells, respectively. In summary, structurally similar bisphenols displayed clear cell-line-specific differences in BMC and AED values for effects on cell viability and phenotypic endpoints. This approach, together with additional data on human exposure, may aid in the selection and prioritization of responsible replacements for BPA. .
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Affiliation(s)
- Abishankari Rajkumar
- Department of Pharmacology & Therapeutics, McGill University, Montreal, QC, H3G 1Y6, Canada
| | - Trang Luu
- Department of Pharmacology & Therapeutics, McGill University, Montreal, QC, H3G 1Y6, Canada
| | - Marc A Beal
- Existing Substances Risk Assessment Bureau, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, ON, K1A 0K9, Canada
| | - Tara S Barton-Maclaren
- Existing Substances Risk Assessment Bureau, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, ON, K1A 0K9, Canada
| | - Bernard Robaire
- Department of Pharmacology & Therapeutics, McGill University, Montreal, QC, H3G 1Y6, Canada.,Department of Obstetrics & Gynecology, McGill University, Montreal, QC, H3G 1Y6, Canada
| | - Barbara F Hales
- Department of Pharmacology & Therapeutics, McGill University, Montreal, QC, H3G 1Y6, Canada
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11
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Gys C, Bastiaensen M, Bruckers L, Colles A, Govarts E, Martin LR, Verheyen V, Koppen G, Morrens B, Den Hond E, De Decker A, Schoeters G, Covaci A. Determinants of exposure levels of bisphenols in flemish adolescents. ENVIRONMENTAL RESEARCH 2021; 193:110567. [PMID: 33275923 DOI: 10.1016/j.envres.2020.110567] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 11/27/2020] [Accepted: 11/28/2020] [Indexed: 06/12/2023]
Abstract
The broadly used industrial chemical bisphenol A (BPA), applied in numerous consumer products, has been under scrutiny in the past 20 years due to its widespread detection in humans and the environment and potential detrimental effects on human health. Following implemented restrictions and phase-out initiatives, BPA is replaced by alternative bisphenols, which have not received the same amount of research attention. As a part of the fourth cycle of the Flemish Environment and Health Study (FLEHS IV, 2016-2020), we monitored the internal exposure to six bisphenols in urine samples of 423 adolescents (14-15 years old) from Flanders, Belgium. All measured bisphenols were detected in the study population, with BPA and its alternatives bisphenol F (BPF) and bisphenol S (BPS) showing detection frequencies > 50%. The reference values show that exposure to these compounds is extensive. However, the urinary BPA level decreased significantly in Flemish adolescents compared to a previous cycle of the FLEHS (2008-2009). This suggests that the replacement of BPA with its analogues is ongoing. Concentrations of bisphenols measured in the Flemish adolescents were generally in the same order of magnitude compared to recent studies worldwide. Multiple regression models were used to identify determinants of exposure based on information on demographic and lifestyle characteristics of participants, acquired through questionnaires. Some significant determinants could be identified: sex, season, smoking behavior, educational level of the parents, recent consumption of certain foods and use of certain products were found to be significantly associated with levels of bisphenols. Preliminary risk assessment showed that none of the estimated daily intakes (EDIs) of BPA exceeded the tolerable daily intake, even in a high exposure scenario. For alternative bisphenols, no health-based guidance values are available, but in line with the measured urinary levels, their EDIs were lower than that of BPA. This study is, to the best of our knowledge, the first to determine internal exposure levels of other bisphenols than BPA in a European adolescent population.
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Affiliation(s)
- Celine Gys
- Toxicological Center, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium.
| | - Michiel Bastiaensen
- Toxicological Center, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium
| | - Liesbeth Bruckers
- BioStat, Data Science Institute, Hasselt University, Martelarenlaan 42, 3500, Hasselt, Belgium
| | - Ann Colles
- VITO Health, Flemish Institute for Technological Research (VITO), Boeretang 200, 2400, Mol, Belgium
| | - Eva Govarts
- VITO Health, Flemish Institute for Technological Research (VITO), Boeretang 200, 2400, Mol, Belgium
| | - Laura Rodriguez Martin
- VITO Health, Flemish Institute for Technological Research (VITO), Boeretang 200, 2400, Mol, Belgium
| | - Veerle Verheyen
- VITO Health, Flemish Institute for Technological Research (VITO), Boeretang 200, 2400, Mol, Belgium; Department of Biomedical Sciences, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium
| | - Gudrun Koppen
- VITO Health, Flemish Institute for Technological Research (VITO), Boeretang 200, 2400, Mol, Belgium
| | - Bert Morrens
- Faculty of Social Sciences, University of Antwerp, Sint-Jacobstraat 2, 2000, Antwerp, Belgium
| | - Elly Den Hond
- Provincial Institute of Hygiene, Kronenburgstraat 45, 2000, Antwerp, Belgium
| | - Annelies De Decker
- Provincial Institute of Hygiene, Kronenburgstraat 45, 2000, Antwerp, Belgium
| | - Greet Schoeters
- VITO Health, Flemish Institute for Technological Research (VITO), Boeretang 200, 2400, Mol, Belgium; Department of Biomedical Sciences, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium
| | - Adrian Covaci
- Toxicological Center, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium.
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12
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Pollock T, Arbuckle TE, Guth M, Bouchard MF, St-Amand A. Associations among urinary triclosan and bisphenol A concentrations and serum sex steroid hormone measures in the Canadian and U.S. Populations. ENVIRONMENT INTERNATIONAL 2021; 146:106229. [PMID: 33161203 DOI: 10.1016/j.envint.2020.106229] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 10/18/2020] [Accepted: 10/19/2020] [Indexed: 06/11/2023]
Abstract
Exposure to triclosan, an antimicrobial agent, and bisphenol A (BPA), the monomer of polycarbonate plastics, is widespread. Endocrine-disrupting impacts of these chemicals have been demonstrated in in vitro studies, rodent toxicology studies, and some human observational studies. Here we compared urinary concentrations of triclosan and BPA in the Canadian and U.S. populations using nationally-representative data from the 2012-2015 Canadian Health Measures Survey (CHMS) and the 2013-2016 National Health and Nutrition Examination Survey (NHANES). We then examined the cross-sectional associations of urinary triclosan or BPA with serum sex steroid hormones, including estradiol (E2), progesterone (P4), and testosterone (T), using multivariable regression. We observed differences in creatinine-standardized chemical concentrations between countries; urinary triclosan was higher in Canadian females aged 12-19 years, while BPA was higher in U.S. females aged 20-49 years. We also found significant associations among urinary chemicals and serum E2 and T, but not P4. Increasing triclosan was associated with higher levels of E2 in 6-11-year-old girls, but with lower levels of E2 and T in adolescent boys aged 12-19 years. Increasing BPA was associated with lower levels of E2 in 6-11-year-old boys and in adolescents aged 12-19 years of either sex. We observed a U-shaped association between urinary triclosan and E2 in male adults aged 50-79 years; no associations between BPA and hormones were detected in adults. These results, in accordance with the in vitro and animal literature, suggest that triclosan and BPA exposures may be cross-sectionally associated with altered reproductive hormone levels, especially in children and adolescents. Further research and prospective studies are necessary to elucidate country-specific differences in chemical exposures and the potential public health significance of these findings.
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Affiliation(s)
- Tyler Pollock
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada.
| | - Tye E Arbuckle
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada
| | - Margot Guth
- Department of Environmental and Occupational Health, School of Public Health, Université de Montréal & Research Centre of the Sainte-Justine University Hospital, Montréal, Québec, Canada
| | - Maryse F Bouchard
- Department of Environmental and Occupational Health, School of Public Health, Université de Montréal & Research Centre of the Sainte-Justine University Hospital, Montréal, Québec, Canada
| | - Annie St-Amand
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada
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13
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Vanni R, Bussuan RM, Rombaldi RL, Arbex AK. Endocrine Disruptors and the Induction of Insulin Resistance. Curr Diabetes Rev 2021; 17:e102220187107. [PMID: 33092513 DOI: 10.2174/1573399816666201022121254] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 10/04/2020] [Accepted: 10/12/2020] [Indexed: 11/22/2022]
Abstract
INTRODUCTION The incidence of insulin resistance syndrome and type 2 diabetes mellitus has increased at an alarming rate worldwide and constitutes a serious challenge to public health care in the 21st century. Endocrine disrupting chemicals are defined as "substances or mixtures of substances that alter the endocrine system functions and, hence, adversely affect organisms, their progeny, or sub populations" and may be associated with this increase in prevalence. OBJECTIVE This study aimed to assess the role of endocrine disrupting chemicals in insulin resistance and the importance of approaching the subject during anamnesis. METHODS A full review of the literature regarding insulin resistance, type-2 diabetes and endocrine disruptors were conducted. CONCLUSION Large-scale production and distribution of endocrine disrupting chemicals coincide with the increase in the prevalence of insulin resistance globally. In recent years, studies have shown that endocrine disrupting chemicals are positively associated with insulin resistance syndrome, evidenced by worse prognoses among individuals with higher levels of exposure. Health professionals should recognize the forms of exposure, most susceptible people, and lifestyle habits that can worsen patients' prognoses.
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Affiliation(s)
- Rafael Vanni
- IPEMED Medical School/ AFYA Educational, Rio de Janeiro, Brazil
| | | | | | - Alberto K Arbex
- Medical Clinic in Schleswig-Flensburg, State of Schleswig-Holstein, Germany
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14
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Kokai D, Stanic B, Samardzija Nenadov D, Pogrmic-Majkic K, Tesic B, Fa S, Andric N. Biological effects of chronic and acute exposure of human endothelial cell line EA.hy926 to bisphenol A: New tricks from an old dog. CHEMOSPHERE 2020; 256:127159. [PMID: 32559890 DOI: 10.1016/j.chemosphere.2020.127159] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 05/14/2020] [Accepted: 05/20/2020] [Indexed: 06/11/2023]
Abstract
Although epidemiological and animal studies suggest a possible correlation between bisphenol A (BPA) exposure and atherosclerosis, very few in vitro mechanistic and functional studies regarding the effect of BPA on vascular cells have been conducted. Here, we applied a "real-life" exposure scenario by continuously exposing human endothelial cell (EC) line EA.hy926 to environmentally relevant concentrations of BPA (10-9, 10-8, and 10-7 M) during 14 weeks. We also exposed EA.hy926 cells to higher concentrations of BPA (10-7, 10-6, and 10-5 M) for up to 48 h to gain mechanistic insight into the BPA's action in ECs. Chronic exposure to BPA produced some unexpected effects in EA.hy926 cells including a transient decrease in the adhesion of monocytes to the EC monolayer and decrease in the expression of cellular adhesion molecules, improvement in endothelial barrier function and elevated expression of tight junction proteins occludin and zonula occludens-1 (ZO-1), increased adhesion of ECs, and increased nitric oxide (NO) production. Some of these effects, such as diminished adhesion of monocytes to the EC monolayer and elevated NO production have also been replicated during acute exposure experiments. Using Western blotting and specific pharmacological inhibitors in the acute study, we have shown that direct BPA's action in EA.hy926 cells involves activation of estrogen receptor (ER), phosphorylation of protein kinase B (PKB/Akt) and endothelial nitric oxide synthase (eNOS)-mediated production of NO. Collectively, these data indicate that BPA induces functional and molecular changes in EA.hy926 cells associated with the promotion of endothelial integrity through activation of the ER/Akt/eNOS pathway.
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Affiliation(s)
- Dunja Kokai
- University of Novi Sad, Faculty of Sciences, Department of Biology and Ecology, Serbia
| | - Bojana Stanic
- University of Novi Sad, Faculty of Sciences, Department of Biology and Ecology, Serbia.
| | | | | | - Biljana Tesic
- University of Novi Sad, Faculty of Sciences, Department of Biology and Ecology, Serbia
| | - Svetlana Fa
- University of Novi Sad, Faculty of Sciences, Department of Biology and Ecology, Serbia
| | - Nebojsa Andric
- University of Novi Sad, Faculty of Sciences, Department of Biology and Ecology, Serbia
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15
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Fu X, Xu J, Zhang R, Yu J. The association between environmental endocrine disruptors and cardiovascular diseases: A systematic review and meta-analysis. ENVIRONMENTAL RESEARCH 2020; 187:109464. [PMID: 32438096 DOI: 10.1016/j.envres.2020.109464] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 03/15/2020] [Accepted: 03/29/2020] [Indexed: 05/12/2023]
Abstract
BACKGROUND Except for known cardiovascular risk factors, long-term exposure to environmental endocrine disruptors (EEDs) - a class of exogenous chemicals, or a mixture of chemicals, that can interfere with any aspect of hormone action - has been shown to increase the risk of cardiovascular diseases (CVDs), which are still controversial. OBJECTIVE To conduct a comprehensive systematic review and meta-analysis to estimate the association between EEDs, including nonylphenol (NP), bisphenol A (BPA), polychlorinated biphenyl (PCB), organo-chlorine pesticide (OCP) and phthalate (PAE) exposure and CVD risk. METHODS The heterogeneity between different studies was qualitatively and quantitatively evaluated using Q test and I2 statistical magnitude, respectively. Subgroup analysis was performed using chemical homologs - a previously unused grouping method - to extract data and perform meta-analysis to assess their exposure to CVD. RESULTS Twenty-nine literatures were enrolled with a total sample size of 88891. The results indicated that exposure to PCB138 and PCB153 were the risk factors for CVD morbidity (odds ratio (OR) = 1.35, 95% confidence interval (CI): 1.10-1.66; OR = 1.35, 95% CI: 1.13-1.62). Exposure to organo-chlorine pesticide (OCP) (OR = 1.12, 95% CI: 1.00-1.24), as well as with phthalate (PAE) (OR = 1.11, 95% CI: 1.06-1.17) and BPA (OR = 1.19, 95% CI: 1.03-1.37) were positively associated with CVD risk, respectively. BPA exposure concentration had no correlation with total cholesterol (TC), or low-density lipoprotein (LDL), but exhibited a correlation with gender, waist circumference (WC), high-density lipoprotein (HDL), age, and body mass index (BMI) (standardized mean difference (SMD)) = 1.51; 95% CI: =(1.01-2.25); SMD = 0.16; 95% CI: (0.08-0.23); SMD = -0.19; 95% CI: (-0.27-0.12); SMD = -0.78; 95% CI: (-1.42-0.14); SMD = 0.08; 95% CI: (0.00-0.16). CONCLUSIONS EED exposure is a risk factor for CVD. Long-term exposure to EEDs can influence cardiovascular health in humans. A possible synergistic effect may exist between the homologs. The mechanism of which needs to be further explored and demonstrated by additional prospective cohort studies, results of in vitro and in vivo analyses, as well as indices affecting CVD.
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Affiliation(s)
- Xiangjun Fu
- School of Public Health, Zunyi Medical University, Zunyi, Guizhou, 563000, PR China
| | - Jie Xu
- School of Public Health, Zunyi Medical University, Zunyi, Guizhou, 563000, PR China.
| | - Renyi Zhang
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Guizhou, PR China
| | - Jie Yu
- School of Public Health, Zunyi Medical University, Zunyi, Guizhou, 563000, PR China.
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16
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Yang CF, Karmaus WJJ, Yang CC, Chen ML, Wang IJ. Bisphenol a Exposure, DNA Methylation, and Asthma in Children. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17010298. [PMID: 31906378 PMCID: PMC6981376 DOI: 10.3390/ijerph17010298] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Revised: 12/16/2019] [Accepted: 12/19/2019] [Indexed: 12/29/2022]
Abstract
Epidemiological studies have reported the relationship between bisphenol A (BPA) exposure and increased prevalence of asthma, but the mechanisms remain unclear. Here, we investigated whether BPA exposure and DNA methylation related to asthma in children. We collected urinary and blood samples from 228 children (Childhood Environment and Allergic Diseases Study cohort) aged 3 years. Thirty-three candidate genes potentially interacting with BPA exposure were selected from a toxicogenomics database. DNA methylation was measured in 22 blood samples with top-high and bottom-low exposures of BPA. Candidate genes with differential methylation levels were validated by qPCR and promoter associated CpG islands have been investigated. Correlations between the methylation percentage and BPA exposure and asthma were analyzed. According to our findings, MAPK1 showed differential methylation and was further investigated in 228 children. Adjusting for confounders, urinary BPA glucuronide (BPAG) level inversely correlated with MAPK1 promoter methylation (β = -0.539, p = 0.010). For the logistic regression analysis, MAPK1 methylation status was dichotomized into higher methylated and lower methylated groups with cut off continuous variable of median of promoter methylation percentage (50%) while performing the analysis. MAPK1 methylation was lower in children with asthma than in children without asthma (mean ± SD; 69.82 ± 5.88% vs. 79.82 ± 5.56%) (p = 0.001). Mediation analysis suggested that MAPK1 methylation acts as a mediation variable between BPA exposure and asthma. The mechanism of BPA exposure on childhood asthma might, therefore, be through the alteration of MAPK1 methylation. The mechanism of BPA exposure on childhood asthma might, therefore, be through the alteration of MAPK1 methylation.
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Affiliation(s)
- Chia-Feng Yang
- Department of Pediatrics, Taipei Veterans General Hospital, Taipei 112, Taiwan;
- Institute of Environmental and Occupational Health Sciences, National Yang-Ming University, Taipei 112, Taiwan; (C.-C.Y.); (M.-L.C.)
| | - Wilfried J. J. Karmaus
- Division of Epidemiology, Biostatistics, and Environmental Health, School of Public Health, University of Memphis, Memphis, TN 38152, USA;
| | - Chen-Chang Yang
- Institute of Environmental and Occupational Health Sciences, National Yang-Ming University, Taipei 112, Taiwan; (C.-C.Y.); (M.-L.C.)
| | - Mei-Lien Chen
- Institute of Environmental and Occupational Health Sciences, National Yang-Ming University, Taipei 112, Taiwan; (C.-C.Y.); (M.-L.C.)
| | - I-Jen Wang
- Department of Pediatrics, Taipei Hospital, Ministry of Health and Welfare, Taipei 242, Taiwan
- School of Medicine, National Yang-Ming University, Taipei 112, Taiwan
- College of Public Health, China Medical University, Taichung 400-439, Taiwan
- National Institutes of Environmental Health Sciences, National Health Research Institutes, Miaoli 35053,Taiwan
- Correspondence: ; Tel.: +886-2-2276-5566 (ext. 2532); Fax: +886-2-2998-8028
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17
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Wang H, Liu ZH, Zhang J, Huang RP, Yin H, Dang Z. Human exposure of bisphenol A and its analogues: understandings from human urinary excretion data and wastewater-based epidemiology. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:3247-3256. [PMID: 31838679 DOI: 10.1007/s11356-019-07111-9] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 11/19/2019] [Indexed: 05/12/2023]
Abstract
This work evaluated human exposure to bisphenol A (BPA) and its analogues based on human urinary excretion data and wastewater-based epidemiology (WBE). The results showed that the world's average human daily intake ranked from high to low is in order of bisphenol A (BPA), bisphenol F (BPF), bisphenol S (BPS), bisphenol P (BPP), bisphenol AP (BPAP), bisphenol B (BPB), bisphenol Z (BPZ), and bisphenol AF (BPAF), and their corresponding human daily intakes are 2.53, 0.68, 0.60, 0.41, 0.36, 0.29, 0.24, and 0.06 μg/p/day, respectively. BPA is clearly the dominant bisphenol for human exposure. However, the results also showed that humans have been widely exposed to BPA analogues as well. Many BPA analogues showed similar estrogenic activities to those of BPA; therefore, the adverse effects of BPA and its analogues on humans should be comprehensively evaluated. The nominal exposure levels obtained based on wastewater-based epidemiology ranked high to low are in order of BPA (513.73 μg/p/day), BPF (10.20 μg/p/day), BPS (5.21 μg/p/day), BPP (1.15 μg/p/day), BPZ (0.66 μg/p/day), BPB (0.61 μg/p/day), BPAF (0.58 μg/p/day), and BPAP (0.35 μg/p/day). The world's human average daily intakes of BPA and its analogues are only 0.5-47.9% of the intakes of their corresponding human nominal exposures. This study suggests that other sources rather human excretions are important origins in municipal wastewater, which indicates that the WBE method based on parent compounds is inappropriate for evaluations of human daily intakes of BPA and its analogues, neither for other industrial compounds that have multiple important sources. Three main important sources of BPA and its analogues in municipal wastewater are likely effluents of industrial wastewater, discharges of hospital wastewater, and landfill leachates. To decrease discharges of BPA and its analogues to the natural environment, any mixing of industrial and hospital wastewater as well as landfill leachates in municipal wastewater is not favorable.
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Affiliation(s)
- Hao Wang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, Guangdong, China
| | - Ze-Hua Liu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, Guangdong, China.
- Key Lab Pollution Control & Ecosystem Restoration in Industry Cluster, Ministry of Education, Guangzhou, 510006, Guangdong, China.
- Guangdong Environmental Protection Key Laboratory of Solid Waste Treatment and Recycling, Guangzhou, 510006, Guangdong, China.
- Guangdong Provincial Engineering and Technology Research Center for Environment Risk Prevention and Emergency Disposal, South China University of Technology, Guangzhou, 510006, Guangdong, China.
| | - Jun Zhang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, Guangdong, China
| | - Ri-Ping Huang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, Guangdong, China
| | - Hua Yin
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, Guangdong, China
| | - Zhi Dang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, Guangdong, China
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18
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Grohs MN, Reynolds JE, Liu J, Martin JW, Pollock T, Lebel C, Dewey D. Prenatal maternal and childhood bisphenol a exposure and brain structure and behavior of young children. Environ Health 2019; 18:85. [PMID: 31615514 PMCID: PMC6794724 DOI: 10.1186/s12940-019-0528-9] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 09/25/2019] [Indexed: 05/18/2023]
Abstract
BACKGROUND Bisphenol A (BPA) is commonly used in the manufacture of plastics and epoxy resins. In North America, over 90% of the population has detectable levels of urinary BPA. Human epidemiological studies have reported adverse behavioral outcomes with BPA exposure in children, however, corresponding effects on children's brain structure have not yet been investigated. The current study examined the association between prenatal maternal and childhood BPA exposure and white matter microstructure in children aged 2 to 5 years, and investigated whether brain structure mediated the association between BPA exposure and child behavior. METHODS Participants were 98 mother-child pairs who were recruited between January 2009 and December 2012. Total BPA concentrations in spot urine samples obtained from mothers in the second trimester of pregnancy and from children at 3-4 years of age were analyzed. Children participated in a diffusion magnetic resonance imaging (MRI) scan at age 2-5 years (3.7 ± 0.8 years). Associations between prenatal maternal and childhood BPA and children's fractional anisotropy and mean diffusivity of 10 isolated white matter tracts were investigated, controlling for urinary creatinine, child sex, and age at the time of MRI. Post-hoc analyses examined if alterations in white matter mediated the relationship of BPA and children's scores on the Child Behavior Checklist (CBCL). RESULTS Prenatal maternal urinary BPA was significantly associated with child mean diffusivity in the splenium and right inferior longitudinal fasciculus. Splenium diffusivity mediated the relationship between maternal prenatal BPA levels and children's internalizing behavior (indirect effect: β = 0.213, CI [0.0167, 0.564]). No significant associations were found between childhood BPA and white matter microstructure. CONCLUSIONS This study provides preliminary evidence for the neural correlates of BPA exposure in humans. Our findings suggest that prenatal maternal exposure to BPA may lead to alterations in white matter microstructure in preschool aged children, and that such alterations mediate the relationship between early life exposure to BPA and internalizing problems.
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Affiliation(s)
- Melody N Grohs
- Department of Neuroscience, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Owerko Centre, Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Jess E Reynolds
- Owerko Centre, Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Jiaying Liu
- Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Jonathan W Martin
- Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
- Science for Life Laboratory, Department of Environmental Science and Analytical Chemistry, Stockholm University, Stockholm, Sweden
| | - Tyler Pollock
- Owerko Centre, Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Department of Medical Genetics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Catherine Lebel
- Owerko Centre, Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Deborah Dewey
- Owerko Centre, Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
- Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
- Department of Paediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
- Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
- University of Calgary, #397 Owerko Center, Child Development Centre 2500 University Dr. NW, Calgary, Alberta, T2N 1N4, Canada.
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19
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Witchey SK, Fuchs J, Patisaul HB. Perinatal bisphenol A (BPA) exposure alters brain oxytocin receptor (OTR) expression in a sex- and region- specific manner: A CLARITY-BPA consortium follow-up study. Neurotoxicology 2019; 74:139-148. [PMID: 31251963 PMCID: PMC6750986 DOI: 10.1016/j.neuro.2019.06.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Revised: 06/17/2019] [Accepted: 06/24/2019] [Indexed: 12/15/2022]
Abstract
Bisphenol A (BPA) is a well-characterized endocrine disrupting chemical (EDC) used in plastics, epoxy resins and other products. Neurodevelopmental effects of BPA exposure are a major concern with multiple rodent and human studies showing that early life BPA exposure may impact the developing brain and sexually dimorphic behaviors. The CLARITY-BPA (Consortium Linking Academic and Regulatory Insights on BPA Toxicity) program was established to assess multiple endpoints, including neural, across a wide dose range. Studies from our lab as part of (and prior to) CLARITY-BPA have shown that BPA disrupts estrogen receptor expression in the developing brain, and some evidence of oxytocin (OT) and oxytocin receptor (OTR) disruption in the hypothalamus and amygdala. While BPA disruption of steroid hormone function is well documented, less is known about its capacity to alter nonapeptide signals. In this CLARITY-BPA follow up study, we used remaining juvenile rat tissues to test the hypothesis that developmental BPA exposure affects OTR expression across the brain. Perinatal BPA exposure (2.5, 25, or 2500 μg/kg body weight (bw)/day) spanned gestation and lactation with dams gavaged from gestational day 6 until birth and then the offspring gavaged directly through weaning. Ethinyl estradiol (0.5 μg/kg bw/day) was used as a reference estrogen. Animals of both sexes were sacrificed as juveniles and OTR expression assessed by receptor binding. Our results demonstrate prenatal exposure to BPA can eliminate sex differences in OTR expression in three hypothalamic regions, and that male OTR expression may be more susceptible. Our data also identify a sub-region of the BNST with sexually dimorphic OTR expression not previously reported in juvenile rats that is also susceptible to BPA.
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Affiliation(s)
- Shannah K Witchey
- Department of Biological Sciences, NC State University, Raleigh, NC, 27695, United States
| | - Joelle Fuchs
- Department of Biological Sciences, NC State University, Raleigh, NC, 27695, United States
| | - Heather B Patisaul
- Department of Biological Sciences, NC State University, Raleigh, NC, 27695, United States; Center for Human Health and the Environment, NC State University, Raleigh, NC, 27695, United States.
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LaKind JS, Pollock T, Naiman DQ, Kim S, Nagasawa A, Clarke J. Factors affecting interpretation of national biomonitoring data from multiple countries: BPA as a case study. ENVIRONMENTAL RESEARCH 2019; 173:318-329. [PMID: 30951958 DOI: 10.1016/j.envres.2019.03.047] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 03/15/2019] [Accepted: 03/19/2019] [Indexed: 06/09/2023]
Abstract
INTRODUCTION The use of biomonitoring data as an indicator of national levels of human exposure to environmental chemicals has grown in importance and prevalence. Nationally representative urinary bisphenol A (BPA) data are now available for Canada, the United States and Korea. Here we address the following questions: Are urinary BPA data from these countries comparable? What can be discerned regarding geographic and/or temporal similarities or differences? Are there generalizable lessons to be learned regarding comparison of biomonitoring results from different countries? METHODS We examined underlying methods and resultant urinary BPA data from national surveys of three countries: Canada (Canadian Health Measures Survey, CHMS, 2009-2015); United States (National Health and Nutrition Examination Survey, NHANES, 2009-2014); and Korea (Korean National Environmental Health Survey, KoNEHS, 2009-2014). We estimated BPA daily intakes on both a volume- and creatinine-adjusted basis. RESULTS The three countries use similar methods for analyzing urine samples for BPA and participate in external proficiency testing with acceptable results. Field blanks are only used in the CHMS program. There were program-specific differences in fasting times of participants. Median urinary BPA levels in Canada remained relatively constant over the three cycles (1.1-1.2 ng/ml), while US levels decreased (from 1.9 to 1.3 ng/ml) and Korean levels increased (from 0.7 to 1.1 ng/ml) over similar time periods. The most recent survey year data indicate that levels do not differ substantially across countries. Canadian urinary BPA levels have been stable; the subtle, non-significant decrease in intakes may be due to higher body weight in the more recent Canadian surveys. In contrast, the decrease in intakes in the US appears to be due to decreases in urinary BPA as body weights in the US have been stable. Estimated 95th percentile intakes are over an order of magnitude below current health-based guidance values. DISCUSSION Our assessment of urinary BPA data from Canada, the US and Korea indicates that methodological differences, methods for dilution adjustment, and population characteristics should be carefully considered when interpreting biomonitoring data. Despite the plethora of publications describing issues with use of creatinine levels for urinary dilution adjustment, there have been no major methodological advances that would assist in interpreting urinary chemical data. A combination of biomonitoring and traditional exposure assessment approaches may be needed to fully assess human exposures to BPA and other chemicals. CONCLUSIONS National biomonitoring surveys provide important information on population levels of chemicals such as BPA and can assist in understanding temporal and geographic similarities, differences, and trends. However, caution must be exercised when using these data to draw anything but broad conclusions, due to both intercountry methodological differences and factors affecting urinary chemical levels that are still poorly understood. While the issues raised in this paper do not appear to be a major concern specifically for the national-scale monitoring of BPA described here, they must be considered when comparing data for other chemicals measured as part of both national and smaller-scale biomonitoring-based research as well as for BPA data from other studies.
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Affiliation(s)
- Judy S LaKind
- LaKind Associates, LLC, Catonsville, MD, USA; Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, MD, USA.
| | - Tyler Pollock
- Canadian Health Measures Survey, Centre for Population Health Statistics, Statistics Canada, Ottawa, Ontario, Canada.
| | - Daniel Q Naiman
- Department of Applied Mathematics and Statistics, Whiting School of Engineering, Johns Hopkins University, Baltimore, MD, USA.
| | - Sungroul Kim
- Department of Environmental Health Sciences, Soon Chun Hyang University, Asan, South Korea.
| | - Audra Nagasawa
- Canadian Health Measures Survey, Centre for Population Health Statistics, Statistics Canada, Ottawa, Ontario, Canada.
| | - Janine Clarke
- Canadian Health Measures Survey, Centre for Population Health Statistics, Statistics Canada, Ottawa, Ontario, Canada.
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Amin MM, Ebrahim K, Hashemi M, Shoshtari-Yeganeh B, Rafiei N, Mansourian M, Kelishadi R. Association of exposure to Bisphenol A with obesity and cardiometabolic risk factors in children and adolescents. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2019; 29:94-106. [PMID: 30203985 DOI: 10.1080/09603123.2018.1515896] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
In this study, the association of exposure to Bisphenol A (BPA) with obesity and cardiometabolic risk factors was investigated on 132 children and adolescents aged 6-18 years living in Isfahan, Iran. Potential contributors to BPA exposure were assessed by a questionnaire. Total BPA was detected in urine samples of all participants without significant difference in boys and girls. The mean body mass index (BMI) and waist circumference (WC) increased significantly across the BPA tertiles (p for trend = < 0.001). Similar trend was documented for systolic blood pressure (SBP) and diastolic blood pressure (DBP) as well as fasting blood sugar. The risk of obesity was 12.48 times higher in participants in the third tertile of BPA than in others (95% CI: 3.36-46.39, p < 0.001). The current study showed significant association between BPA exposure with obesity and some cardiometabolic risk factors in children and adolescents, however, further longitudinal studies are necessary to evaluate the clinical effects of this finding. Abbreviations: BMI: Body Mass Index; BPA: Bisphenol A; BSTFA: N, O-Bistrifluoroacetamide; CDC: Centers for Disease Control and Prevention; CI: Circumference Interval; DBP: Diastolic Blood Pressure; DLLME: Dispersive liquid-liquid microextraction method; FBS: Fasting Blood Glucose; HDL: high-density lipoprotein cholesterol were; LDL: low-density lipoprotein cholesterol; OR: Odd Ratio; PA: Physical Activity; SBP: Systolic Blood Pressure; TC: total cholesterol; TG: triglycerides; WC: Waist Circumference.
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Affiliation(s)
- Mohammad Mehdi Amin
- a Environment Research Center, Research Institute for Primordial Prevention of Non-communicable disease , Isfahan University of Medical Sciences , Isfahan , Iran
- b Department of Environmental Health Engineering, School of Health , Isfahan University of Medical Sciences , Isfahan , Iran
| | - Karim Ebrahim
- a Environment Research Center, Research Institute for Primordial Prevention of Non-communicable disease , Isfahan University of Medical Sciences , Isfahan , Iran
- b Department of Environmental Health Engineering, School of Health , Isfahan University of Medical Sciences , Isfahan , Iran
| | - Majid Hashemi
- b Department of Environmental Health Engineering, School of Health , Isfahan University of Medical Sciences , Isfahan , Iran
- c Student Research Committee , Isfahan University of Medical Sciences , Isfahan , Iran
- d Environmental Health engineering, school of health , Kerman university of medical sciences , Kerman , Iran
| | - Bahareh Shoshtari-Yeganeh
- a Environment Research Center, Research Institute for Primordial Prevention of Non-communicable disease , Isfahan University of Medical Sciences , Isfahan , Iran
- b Department of Environmental Health Engineering, School of Health , Isfahan University of Medical Sciences , Isfahan , Iran
| | - Nasim Rafiei
- a Environment Research Center, Research Institute for Primordial Prevention of Non-communicable disease , Isfahan University of Medical Sciences , Isfahan , Iran
- b Department of Environmental Health Engineering, School of Health , Isfahan University of Medical Sciences , Isfahan , Iran
| | - Marjan Mansourian
- e Department of Biostatistics and Epidemiology, School of Health , Isfahan University of Medical Sciences , Isfahan , Iran
| | - Roya Kelishadi
- f Child Growth and Development Research Center, Research Institute for Primordial Prevention of Non-communicable Disease , Isfahan University of Medical Sciences , Isfahan , Iran
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Eykelbosh A, Werry K, Kosatsky T. Leveraging the Canadian Health Measures Survey for environmental health research. ENVIRONMENT INTERNATIONAL 2018; 119:536-543. [PMID: 30077001 DOI: 10.1016/j.envint.2018.07.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 07/05/2018] [Accepted: 07/06/2018] [Indexed: 06/08/2023]
Abstract
Since 2007, the nationally representative, cross-sectional Canadian Health Measures Survey (CHMS) has collected detailed health and exposure data from more than 25,000 Canadians, including a wide range of chemical biomarkers analyzed in blood, urine, and environmental media. This article highlights the extent to which the CHMS dataset has been used in the peer-reviewed environmental health literature and opportunities for further expanding usage of the dataset. A literature search (2007-2018) was performed to identify peer-reviewed studies that have made substantive use of the CHMS dataset. Studies were analyzed according to the study type, data usage, populations studied, environmental health themes, citation/publication data, and institutional collaborations. A total of 51 environmental-health related CHMS studies were identified, including studies related to indoor and outdoor air quality, the built environment, and chemical and environmental tobacco smoke exposures. Health indicator data are being increasingly exploited, as is the ability to combine cycle datasets over time. Although these studies covered a range of environmental exposures, many CHMS variables remain underutilized. The CHMS dataset provides a valuable portrait of chemical exposures in Canadians of all ages, linked to a wide variety of health indicators. Many opportunities remain to exploit and expand both the use of the dataset and collaborations between Canadian agencies and domestic and international research institutions.
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Affiliation(s)
- Angela Eykelbosh
- Environmental Health Services, BC Centre for Disease Control, 655 West 12(th) Avenue, Vancouver, BC V5Z 4R4, Canada; National Collaborating Centre for Environmental Health, 601 West Broadway, Vancouver, BC V5Z 4C2, Canada.
| | - Kate Werry
- Environmental Health Science and Research Bureau, Healthy Environments and Consumer Safety Branch, Health Canada, 269 Laurier Avenue West, Ottawa, Ontario K1A 0K9, Canada.
| | - Tom Kosatsky
- Environmental Health Services, BC Centre for Disease Control, 655 West 12(th) Avenue, Vancouver, BC V5Z 4R4, Canada; National Collaborating Centre for Environmental Health, 601 West Broadway, Vancouver, BC V5Z 4C2, Canada.
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Li Y, Duan F, Zhou X, Pan H, Li R. Differential responses of GC‑1 spermatogonia cells to high and low doses of bisphenol A. Mol Med Rep 2018; 18:3034-3040. [PMID: 30015891 DOI: 10.3892/mmr.2018.9256] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 01/05/2018] [Indexed: 11/06/2022] Open
Abstract
Bisphenol A (BPA) is an environmental endocrine disruptor. The exact effect of BPA on spermatogenesis and the specific epigenetic effects on mouse spermatogonia remain to be elucidated. The present study exposed the GC‑1 spermatogonial cell line to a series of differing BPA concentrations and examined the subsequent effects on cell proliferation, mitogen activated protein kinase (MAPK) signaling, DNA and histone methylation. A Cell Counting Kit‑8 assay revealed that BPA significantly inhibited cell growth at the concentration of 10 µg/ml, however no significant alterations were detected at lower BPA doses. The global DNA methylation levels were reduced at the dose of 10 µg/ml of BPA, via detection of 5‑methylcytosine using a dot blot. The protein and mRNA expression levels of DNA methyltransferase (DNMT) 1 were decreased at 10 and 1 µg/ml of BPA, detected via western blotting and reverse transcription‑quantitative polymerase chain reaction, respectively. The global levels of H3K27me3 was decreased at 10 µg/ml BPA, detected via western blotting. Increased phosphorylation of p38 and decreased phosphorylation of extracellular signal‑regulated kinases 1/2 were observed at 10 and 1 µg/ml BPA. The results demonstrated that high and low doses of BPA exposure exhibit differential effects on cell growth, global DNA methylation, histone H3K9Me3 and H3K27Me3 levels and additionally affect the MAPK signaling pathways.
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Affiliation(s)
- Yuhua Li
- Key Laboratory of Reproduction Regulation of National Population and Family Planning Committee, Shanghai Institute of Planned Parenthood Research, Institute of Reproduction and Development, Fudan University, Shanghai 200032, P.R. China
| | - Fei Duan
- Key Laboratory of Reproduction Regulation of National Population and Family Planning Committee, Shanghai Institute of Planned Parenthood Research, Institute of Reproduction and Development, Fudan University, Shanghai 200032, P.R. China
| | - Xiaoyu Zhou
- Key Laboratory of Reproduction Regulation of National Population and Family Planning Committee, Shanghai Institute of Planned Parenthood Research, Institute of Reproduction and Development, Fudan University, Shanghai 200032, P.R. China
| | - Hongjie Pan
- Key Laboratory of Reproduction Regulation of National Population and Family Planning Committee, Shanghai Institute of Planned Parenthood Research, Institute of Reproduction and Development, Fudan University, Shanghai 200032, P.R. China
| | - Runsheng Li
- Key Laboratory of Reproduction Regulation of National Population and Family Planning Committee, Shanghai Institute of Planned Parenthood Research, Institute of Reproduction and Development, Fudan University, Shanghai 200032, P.R. China
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Huang RP, Liu ZH, Yin H, Dang Z, Wu PX, Zhu NW, Lin Z. Bisphenol A concentrations in human urine, human intakes across six continents, and annual trends of average intakes in adult and child populations worldwide: A thorough literature review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 626:971-981. [PMID: 29898562 DOI: 10.1016/j.scitotenv.2018.01.144] [Citation(s) in RCA: 117] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 01/12/2018] [Accepted: 01/15/2018] [Indexed: 05/12/2023]
Abstract
Bisphenol A (BPA) is an important industrial raw material that is widely applied in daily products. BPA is also an endocrine-disrupting chemical that may adversely affect humans. This review thoroughly collected data on BPA concentration in human urine and determined main influencing factors. The average BPA intake of humans across six continents or the average value worldwide was calculated based on a simple model. Results showed that the average BPA intake was ranked from high to low as follows: Oceania, Asia, Europe, and North America in the child population and Oceania, Europe, Asia, and North America in the adult population. The annual trend of the average BPA intake was similar between the adult and child populations. The BPA intake in the two populations evidently decreased from 2000 to 2008 and then slightly increased from 2008 to 2011. The BPA intake in the child population started to decrease again from 2011, whereas the corresponding intake in the adult population continued to increase. The distinct difference likely contributed to the wide prohibition of the use of BPA in food-related products for children in many countries since 2009; the bans effectively decreased the total BPA exposure in the child population.
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Affiliation(s)
- Ri-Ping Huang
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, Guangdong, China
| | - Ze-Hua Liu
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, Guangdong, China; Key Lab Pollution Control & Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, Guangdong, China; Guangdong Environmental Protection Key Laboratory of Solid Waste Treatment and Recycling, Guangzhou 510006, Guangdong, China; Guangdong Provincial Engineering and Technology Research Center for Environment Risk Prevention and Emergency Disposal, South China University of Technology, Guangzhou 510006, Guangdong, China.
| | - Hua Yin
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, Guangdong, China
| | - Zhi Dang
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, Guangdong, China
| | - Ping-Xiao Wu
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, Guangdong, China
| | - Neng-Wu Zhu
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, Guangdong, China
| | - Zhang Lin
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, Guangdong, China
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Khoury C, Werry K, Haines D, Walker M, Malowany M. Human biomonitoring reference values for some non-persistent chemicals in blood and urine derived from the Canadian Health Measures Survey 2009–2013. Int J Hyg Environ Health 2018; 221:684-696. [DOI: 10.1016/j.ijheh.2018.03.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 03/10/2018] [Accepted: 03/13/2018] [Indexed: 02/05/2023]
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MacKay H, Abizaid A. A plurality of molecular targets: The receptor ecosystem for bisphenol-A (BPA). Horm Behav 2018; 101:59-67. [PMID: 29104009 DOI: 10.1016/j.yhbeh.2017.11.001] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 09/29/2017] [Accepted: 11/01/2017] [Indexed: 01/01/2023]
Abstract
Bisphenol-A (BPA) is a well-known endocrine disrupting compound (EDC), capable of affecting the normal function and development of the reproductive system, brain, adipose tissue, and more. In spite of these diverse and well characterized effects, there is often comparatively little known about the molecular mechanisms which bring them about. BPA has traditionally been regarded as a primarily estrogenic EDC, and this perspective is often what guides research into the effects of BPA. However, emerging data from in-vitro and in-silico models show that BPA binds with a significant number of hormone receptors, including a number of nuclear and membrane-bound estrogen receptors, androgen receptors, as well as the thyroid hormone receptor, glucocorticoid receptor, and PPARγ. With this increased diversity of receptor targets, it may be possible to explain some of the more puzzling aspects of BPA pharmacology, including its non-monotonic dose-response curve, as well as experimental results which disagree with estrogenic positive controls. This paper reviews the receptors for which BPA has a known interaction, and discusses the implications of taking these receptors into account when studying the disruptive effects of BPA on growth and development.
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Affiliation(s)
- Harry MacKay
- Department of Pediatrics, Baylor College of Medicine, USDA/ARS Childrens Nutrition Research Center, Houston, TX, USA.
| | - Alfonso Abizaid
- Department of Neuroscience, Carleton University, Ottawa, ON, Canada
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Do MT, Chang VC, Mendez MA, de Groh M. Urinary bisphenol A and obesity in adults: results from the Canadian Health Measures Survey. Health Promot Chronic Dis Prev Can 2017; 37:403-412. [PMID: 29236378 PMCID: PMC5765817 DOI: 10.24095/hpcdp.37.12.02] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
INTRODUCTION Exposure to bisphenol A (BPA) has been shown to affect lipid metabolism and promote weight gain in animal studies. Recent epidemiological studies also support a link between BPA and obesity in human populations, although many were limited to a single adiposity measure or have not considered potential confounding by dietary factors. The purpose of this study is to examine associations between urinary BPA and adiposity measures in a nationally representative sample of Canadian adults. METHODS We performed analyses using biomonitoring and directly measured anthropometric data from 4733 adults aged 18 to 79 years in the Canadian Health Measures Survey (2007-2011). We used multinomial and binary logistic regression models to estimate associations of urinary BPA with body mass index (BMI) categories (overweight vs. under/normal weight; obesity vs. under/normal weight) and elevated waist circumference (males: ≥ 102 cm; females: ≥ 88 cm), respectively, while controlling for potential confounders. Linear regression analyses were also performed to assess associations between urinary BPA and continuous BMI and waist circumference measures. RESULTS Urinary BPA was positively associated with BMI-defined obesity, with an odds ratio of 1.54 (95% confidence interval [CI]: 1.002-2.37) in the highest (vs. lowest) BPA quartile (test for trend, p = .041). Urinary BPA was not associated with elevated waist circumference defined using standard cut-offs. Additionally, each natural-log unit increase in urinary BPA concentration was associated with a 0.33 kg/m2 (95% CI: 0.10- 0.57) increase in BMI and a 1.00 cm (95% CI: 0.34-1.65) increase in waist circumference. CONCLUSION Our study contributes to the growing body of evidence that BPA is positively associated with obesity. Prospective studies with repeated measures are needed to address temporality and improve exposure classification.
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Affiliation(s)
- Minh T Do
- Public Health Agency of Canada, Ottawa, Ontario, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
- Department of Health Sciences, Carleton University, Ottawa, Ontario, Canada
| | - Vicky C Chang
- Public Health Agency of Canada, Ottawa, Ontario, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Michelle A Mendez
- Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina, USA
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Dereumeaux C, Saoudi A, Oleko A, Pecheux M, Vandentorren S, Fillol C, Denys S. Surveillance biologique de l’exposition des femmes enceintes françaises aux polluants de l’environnement : résultats du volet périnatal du programme national de biosurveillance mis en œuvre au sein de la cohorte Elfe. TOXICOLOGIE ANALYTIQUE ET CLINIQUE 2017. [DOI: 10.1016/j.toxac.2017.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Huang RP, Liu ZH, Yuan SF, Yin H, Dang Z, Wu PX. Worldwide human daily intakes of bisphenol A (BPA) estimated from global urinary concentration data (2000-2016) and its risk analysis. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 230:143-152. [PMID: 28649042 DOI: 10.1016/j.envpol.2017.06.026] [Citation(s) in RCA: 137] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 05/23/2017] [Accepted: 06/11/2017] [Indexed: 05/26/2023]
Abstract
To evaluate BPA's potential risk to health, it is important to know human daily intake. This study describes a simple but effective method to estimate the levels of human BPA intake among four different populations based on urinary concentration data. Nationally, of the 30 countries examined, the top ten countries for adult intake were Italy, Sweden, Denmark, France, Cyprus, Australia, Israel, Ghana, Jamaica, and Belgium. When the urinary excretion sample size was large enough and over 1000, it was found that the national estimated BPA daily intakes in the child group among countries, showed a good linear relationship with those of their corresponding adult group. Except the infant group with limited data, the global estimated BPA daily intakes for children and pregnant women were 2 and 1.4 times that of the adult group. Although the national and global estimated BPA daily intakes were generally below the temporary tolerable daily intake (tTDI) recommended by the European Food Safety Authority (EFSA), but some normal individuals' daily intakes exceeded the tTDI.
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Affiliation(s)
- Ri-Ping Huang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, Guangdong, China
| | - Ze-Hua Liu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, Guangdong, China; Key Lab Pollution Control & Ecosystem Restoration in Industry Cluster, Ministry of Education, Guangzhou 510006, Guangdong, China; Guangdong Environmental Protection Key Laboratory of Solid Waste Treatment and Recycling, Guangzhou, 510006, Guangdong, China; Guangdong Provincial Engineering and Technology Research Center for Environment Risk Prevention and Emergency Disposal, South China University of Technology, Guangzhou, 510006, Guangdong, China.
| | - Su-Fen Yuan
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, Guangdong, China
| | - Hua Yin
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, Guangdong, China
| | - Zhi Dang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, Guangdong, China
| | - Ping-Xiao Wu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, Guangdong, China
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Sailo L, Tiwari D, Lee SM. Degradation of some micro-pollutants from aqueous solutions using ferrate (VI): Physico-chemical studies. SEP SCI TECHNOL 2017. [DOI: 10.1080/01496395.2017.1374976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Lalsaimawia Sailo
- Department of Chemistry, School of Physical Sciences, Mizoram University, Aizawl, India
| | - Diwakar Tiwari
- Department of Chemistry, School of Physical Sciences, Mizoram University, Aizawl, India
| | - Seung-Mok Lee
- Department of Health and Environment, Catholic Kwandong University, Gangneung, Korea
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Berman T, Goldsmith R, Levine H, Grotto I. Human biomonitoring in Israel: Recent results and lessons learned. Int J Hyg Environ Health 2017; 220:6-12. [DOI: 10.1016/j.ijheh.2016.09.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 09/08/2016] [Accepted: 09/15/2016] [Indexed: 12/12/2022]
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Dereumeaux C, Saoudi A, Pecheux M, Berat B, de Crouy-Chanel P, Zaros C, Brunel S, Delamaire C, le Tertre A, Lefranc A, Vandentorren S, Guldner L. Biomarkers of exposure to environmental contaminants in French pregnant women from the Elfe cohort in 2011. ENVIRONMENT INTERNATIONAL 2016; 97:56-67. [PMID: 27788374 DOI: 10.1016/j.envint.2016.10.013] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 09/23/2016] [Accepted: 10/14/2016] [Indexed: 05/19/2023]
Abstract
BACKGROUND As part of the perinatal component of the French Human Biomonitoring (HBM) program, biomarkers levels of various chemicals have been described among pregnant women having given birth in continental France in 2011 and who have been enrolled in the Elfe cohort (French Longitudinal Study since Childhood). This paper describes the design of the study and provides main descriptive results regarding exposure biomarkers levels. METHODS Exposure biomarkers were measured in biological samples collected at delivery from pregnant women randomly selected among the participants in the clinical and biological component of the Elfe cohort (n=4145). The geometric mean and percentiles of the levels distribution were estimated for each biomarker. The sampling design was taken into account in order to obtain estimates representative of the French pregnant women in 2011. RESULTS Results provide a nation-wide representative description of biomarker levels for important environmental contaminants among pregnant women who gave birth in France in 2011. Bisphenol A (BPA), and some metabolites of phthalates, pesticides (mainly pyrethroids), dioxins, furans, polychlorobiphenyls (PCBs), brominated flame retardants (BFRs), perfluorinated compounds (PFCs) and metals (except uranium) were quantified in almost 100% of the pregnant women. Some compounds showed a downward trend compared to previous studies (lead, mercury), but others did not (pyrethroids) and should be further monitored. CONCLUSION AND PERSPECTIVES The present results show that French pregnant women are exposed to a wide variety of pollutants, including some that have been banned or restricted in France.
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Affiliation(s)
- Clémentine Dereumeaux
- Direction of Environmental Health, Santé publique France, 12 rue du Val d'Osne, 94415 Saint Maurice Cedex, France.
| | - Abdesattar Saoudi
- Direction of Environmental Health, Santé publique France, 12 rue du Val d'Osne, 94415 Saint Maurice Cedex, France
| | - Marie Pecheux
- Direction of Environmental Health, Santé publique France, 12 rue du Val d'Osne, 94415 Saint Maurice Cedex, France
| | - Bénédicte Berat
- Direction of Environmental Health, Santé publique France, 12 rue du Val d'Osne, 94415 Saint Maurice Cedex, France
| | - Perrine de Crouy-Chanel
- Direction of Environmental Health, Santé publique France, 12 rue du Val d'Osne, 94415 Saint Maurice Cedex, France
| | - Cécile Zaros
- French National Institute for Health and Medical Research (Inserm), The "Elfe" INED-INSERM-EFS team, 133, boulevard Davout, 75020 Paris, France
| | - Serge Brunel
- Direction of Environmental Health, Santé publique France, 12 rue du Val d'Osne, 94415 Saint Maurice Cedex, France
| | - Corinne Delamaire
- Direction of Environmental Health, Santé publique France, 12 rue du Val d'Osne, 94415 Saint Maurice Cedex, France
| | - Alain le Tertre
- Direction of Environmental Health, Santé publique France, 12 rue du Val d'Osne, 94415 Saint Maurice Cedex, France
| | - Agnès Lefranc
- Direction of Environmental Health, Santé publique France, 12 rue du Val d'Osne, 94415 Saint Maurice Cedex, France
| | - Stéphanie Vandentorren
- Direction of Environmental Health, Santé publique France, 12 rue du Val d'Osne, 94415 Saint Maurice Cedex, France
| | - Laurence Guldner
- Direction of Environmental Health, Santé publique France, 12 rue du Val d'Osne, 94415 Saint Maurice Cedex, France
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Park JH, Hwang MS, Ko A, Jeong DH, Lee JM, Moon G, Lee KS, Kho YH, Shin MK, Lee HS, Kang HS, Suh JH, Hwang IG. Risk assessment based on urinary bisphenol A levels in the general Korean population. ENVIRONMENTAL RESEARCH 2016; 150:606-615. [PMID: 27016465 DOI: 10.1016/j.envres.2016.03.024] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 01/27/2016] [Accepted: 03/18/2016] [Indexed: 06/05/2023]
Abstract
Bisphenol A (BPA) is a high-volume industrial chemical used in the global production of polycarbonate plastics and epoxy resins, which are used in food and drink containers, such as tableware (plates and mugs). Due to its broad applications, BPA has been detected in human blood, urine and breast milk as well as environmental substances, including water, indoor and outdoor air, and dust. Indeed, exposure to high concentrations of BPA can result in a variety of harmful effects, including reproductive toxicity, through a mechanism of endocrine disruption. Our comparison of reported BPA urinary concentrations among different countries revealed that exposures in Korea may be higher than those in other Asian countries and North America, but lower than or similar to those in European countries. The current study included a total of 2044 eligible subjects of all ages. The subjects were evenly divided between males and females (48.58% and 51.42%, respectively). The geometric mean (GM) of pre-adjusted (adjusted) urinary BPA concentrations was 1.83μg/L (2.01μg/g creatinine) for subjects of all ages, and there was no statistically difference in BPA concentrations between males (1.90μg/L, 1.87μg/g creatinine) and females (1.76μg/L, 2.16μg/g creatinine). Multiple regression analysis revealed only one positive association between creatinine pre-adjusted urinary BPA concentration and age (β=-0.0868, p<0.001). The 95th percentile levels of 24-hour recall (HR), food frequency questionnaires (FFQ) and estimated daily intake (EDI) through urinary BPA concentrations were 0.14, 0.13, and 0.22μg/kg bw/day, respectively. According to the Ministry of Food and Drug Safety (MFDS), a tolerable daily intake (tDI) of 20μg/kg bw/day was established for BPA from the available toxicological data. Recently, the European Food Safety Authority (EFSA) established a temporary TDI of 4μg/kg bw/day based on current toxicological data. By comparing these TDIs with subjects' exposure, we conclude that there are no health concerns for any age group as a result of current levels of dietary exposure to BPA.
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Affiliation(s)
- Jae-Hong Park
- Food Safety Risk Assessment Division, National Institute of Food & Drug Safety Evaluation, Ministry of Food and Drug Safety, 187 Osongsaengmyeong2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, Republic of Korea
| | - Myung-Sil Hwang
- Food Safety Risk Assessment Division, National Institute of Food & Drug Safety Evaluation, Ministry of Food and Drug Safety, 187 Osongsaengmyeong2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, Republic of Korea.
| | - Ahra Ko
- Food Safety Risk Assessment Division, National Institute of Food & Drug Safety Evaluation, Ministry of Food and Drug Safety, 187 Osongsaengmyeong2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, Republic of Korea
| | - Da-Hyun Jeong
- Food Safety Risk Assessment Division, National Institute of Food & Drug Safety Evaluation, Ministry of Food and Drug Safety, 187 Osongsaengmyeong2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, Republic of Korea
| | - Jung-Mi Lee
- Food Safety Risk Assessment Division, National Institute of Food & Drug Safety Evaluation, Ministry of Food and Drug Safety, 187 Osongsaengmyeong2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, Republic of Korea
| | - Guiim Moon
- Food Safety Risk Assessment Division, National Institute of Food & Drug Safety Evaluation, Ministry of Food and Drug Safety, 187 Osongsaengmyeong2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, Republic of Korea
| | - Kwang-Soo Lee
- Food Safety Risk Assessment Division, National Institute of Food & Drug Safety Evaluation, Ministry of Food and Drug Safety, 187 Osongsaengmyeong2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, Republic of Korea
| | - Young-Ho Kho
- Food Safety Risk Assessment Division, National Institute of Food & Drug Safety Evaluation, Ministry of Food and Drug Safety, 187 Osongsaengmyeong2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, Republic of Korea
| | - Min-Ki Shin
- Food Safety Risk Assessment Division, National Institute of Food & Drug Safety Evaluation, Ministry of Food and Drug Safety, 187 Osongsaengmyeong2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, Republic of Korea
| | - Hee-Seok Lee
- Food Safety Risk Assessment Division, National Institute of Food & Drug Safety Evaluation, Ministry of Food and Drug Safety, 187 Osongsaengmyeong2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, Republic of Korea
| | - Hui-Seung Kang
- Food Safety Risk Assessment Division, National Institute of Food & Drug Safety Evaluation, Ministry of Food and Drug Safety, 187 Osongsaengmyeong2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, Republic of Korea
| | - Jin-Hyang Suh
- Food Safety Risk Assessment Division, National Institute of Food & Drug Safety Evaluation, Ministry of Food and Drug Safety, 187 Osongsaengmyeong2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, Republic of Korea
| | - In-Gyun Hwang
- Food Safety Risk Assessment Division, National Institute of Food & Drug Safety Evaluation, Ministry of Food and Drug Safety, 187 Osongsaengmyeong2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, Republic of Korea.
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Rivas A, Monteagudo C, Heras-Gonzalez L, Mariscal-Arcas M, Lorenzo-Tovar ML, Olea-Serrano F. Association of bisphenol A exposure with dietary quality indices in Spanish schoolchildren. Food Chem Toxicol 2016; 94:25-30. [DOI: 10.1016/j.fct.2016.05.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 04/12/2016] [Accepted: 05/15/2016] [Indexed: 01/30/2023]
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Abstract
In environmental epidemiology, use of biomonitoring (i.e., trace-level measurement of environmental chemicals or their metabolites in biospecimens) for exposure assessment has increased considerably in past decades. Although exposure biomarkers should reflect a person's exposure to the target chemicals (or their precursors) within a specific timeframe, timing, duration, and intensity of exposures are normally unknown and likely vary within the study period. Therefore, evaluating exposure beyond a single time point may require collecting more than one biospecimen. Of note, collection and sample processing procedures will impact integrity and usefulness of biospecimens. All of the above factors are fundamental to properly interpret biomonitoring data. We will discuss the relevance of the exposure assessment study protocol design to (a) ensure that biomonitoring specimens reflect the intended exposure, (b) consider the temporal variability of concentrations of the target biomarkers, and
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Affiliation(s)
- Antonia M Calafat
- Centers for Disease Control and Prevention, 4770 Buford Hwy, MS F17, Atlanta, GA 30341, USA
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Beydoun HA, Beydoun MA, Jeng HA, Zonderman AB, Eid SM. Bisphenol-A and Sleep Adequacy among Adults in the National Health and Nutrition Examination Surveys. Sleep 2016; 39:467-76. [PMID: 26446109 DOI: 10.5665/sleep.5466] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Accepted: 08/14/2015] [Indexed: 12/14/2022] Open
Abstract
STUDY OBJECTIVES To evaluate bisphenol-A (BPA) level and its relationship to sleep adequacy in a nationally representative sample of U.S. adults. METHODS A population-based cross-sectional study was conducted using 2005-2010 National Health and Nutrition Examination Survey whereby data were collected using in-person interviews, physical examination and laboratory testing. BPA level was measured in urine samples and analyzed as loge-transformed variable and in quartiles (< 0.9 ng/mL; 0.9 to < 1.9 ng/mL; 1.9 to < 3.7 ng/mL; 3.7+ ng/mL). Sleep adequacy was operationalized with three questions: "How much sleep do you usually get at night on weekdays or workdays?", "Have you ever told a doctor or other health professionals that you have trouble sleeping?" and "Have you ever been told by a doctor or other health professional that you have a sleep disorder?" Sleep duration was further categorized as (< 6 h, ≥ 6 h); (< 7 h, 7-8 h, > 8 h); (< 5 h, 5-6 h, 7-8 h, ≥ 9 h). Linear, binary, and ordinal logistic regression models were constructed. RESULTS Loge-transformed BPA level was inversely related to sleep duration defined, in hours, as a continuous variable, a dichotomous variable (≥ 6, < 6), or an ordinal variable (≥ 9, 7-8, 5-6, < 5), after adjustment for confounders. Help-seeking behavior for sleep problems and diagnosis with sleep disorders were not significantly associated with loge-transformed BPA level in fully adjusted models. CONCLUSIONS Loge-transformed BPA level may be associated with fewer hours of sleep among U.S. adults, with implications for prevention. Further research involving diverse populations are needed to confirm these study findings.
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Affiliation(s)
- Hind A Beydoun
- Graduate Program in Public Health, Eastern Virginia Medical School, Norfolk, VA
| | - May A Beydoun
- Laboratory of Epidemiology and Population Sciences, National Institute on Aging Intramural Research Program, Baltimore, MD
| | - Hueiwang Anna Jeng
- Department of Community & Environmental Health, Old Dominion University, Norfolk, VA
| | - Alan B Zonderman
- Laboratory of Epidemiology and Population Sciences, National Institute on Aging Intramural Research Program, Baltimore, MD
| | - Shaker M Eid
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
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Wang IJ, Chen CY, Bornehag CG. Bisphenol A exposure may increase the risk of development of atopic disorders in children. Int J Hyg Environ Health 2015; 219:311-6. [PMID: 26765087 DOI: 10.1016/j.ijheh.2015.12.001] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 11/30/2015] [Accepted: 12/01/2015] [Indexed: 12/01/2022]
Abstract
BACKGROUND Little is known about the effect of Bisphenol A (BPA) on atopic disorders. OBJECTIVE To investigated the associations (i) between postnatal BPA exposure and allergic diseases in children; (ii) between BPA and IgE levels for the possible disease pathogenesis; and (iii) gender-based differences. METHODS A total of 453 children from Childhood Environment and Allergic Diseases Study cohort with urine and blood samples were recruited in Taiwan. Urinary BPA glucoronide (BPAG) levels were measured by UPLC-MS/MS at ages 3 and 6 years. The associations between BPAG levels at different ages and IgE levels and the development of allergic diseases were evaluated by multivariate linear regression and logistic regression. A mediation analysis was also conducted to evaluate how much risk of allergic diseases in relation to BPA exposure is explained by IgE changes. RESULTS The BPAG levels at age 3 were positively associated with IgE levels at age 3 (β=64.85kU/l per ln-unit increase BPAG level; 95% CI, 14.59-115.11kU/l). Stratified by gender, BPAG levels at age 3 were positively associated with IgE levels at age 3, particularly in girls (β=139.23kU/l; 95% CI, 57.38-221.09kU/l). Similar results were also found at age 6. Urinary BPAG levels at age 3 were significantly associated with asthma at ages 3 and 6, with OR (95%CI) of 1.29(1.08-1.55) and 1.27(1.04-1.55). We estimated that 70% of the total effect of BPA exposure on asthma is mediated by IgE levels. CONCLUSIONS BPA exposures were associated with IgE levels and may increase the risk of development of allergic diseases in children particularly in girls.
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Affiliation(s)
- I-Jen Wang
- Department of Pediatrics, Taipei Hospital, Ministry of Health and Welfare, Taipei, Taiwan; Institute of Environmental and Occupational Health Sciences, College of Medicine, National Yang-Ming University, Taipei, Taiwan; Department of Health Risk Management, China Medical University, Taichung, Taiwan.
| | - Chia-Yang Chen
- Institute of Environmental Health, College of Public Health, National Taiwan University, Taipei, Taiwan
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Abstract
Bisphenol A (BPA) exposure has been associated with serious endocrine-disrupting effects in humans and wildlife. Toxicological and epidemiological studies evidenced that BPA increases body mass index and disrupts normal cardiovascular physiology by interfering with endogenous hormones in rodents, nonhuman primates, and cell culture test systems. The BPA concentration derived from these experiments were used by government regulatory agencies to determine the safe exposure levels of BPA in humans. However, accumulating literature in vivo and in vitro indicate that at concentrations lower than that reported in toxicological studies, BPA could elicit a different endocrine-disrupting capacity. To further complicate this picture, BPA effects rely on several and diverse mechanisms that converge upon endocrine and reproductive systems. If all or just few of these mechanisms concur to the endocrine-disrupting potential of low doses of BPA is at present still unclear. Thus, taking into account that the incidence and/or prevalence of health problems associated with endocrine disruption have increased worldwide, the goal of the present review is to give an overview of the many mechanisms of BPA action in order to decipher whether different mechanisms are at the root of the effect of low dose of BPA on endocrine system.
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Affiliation(s)
| | | | - Maria Marino
- Department of Science, Roma Tre University, Roma, Italy; INBB-National Laboratory of Gender and Endocrine Disruptors, Roma, Italy
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LaKind JS, Naiman DQ. Temporal trends in bisphenol A exposure in the United States from 2003-2012 and factors associated with BPA exposure: Spot samples and urine dilution complicate data interpretation. ENVIRONMENTAL RESEARCH 2015; 142:84-95. [PMID: 26121292 DOI: 10.1016/j.envres.2015.06.013] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Revised: 05/18/2015] [Accepted: 06/09/2015] [Indexed: 05/23/2023]
Abstract
Nationally representative data on urinary levels of BPA and its metabolites in the United States from the 2003-2004 to 2011-2012 National Health and Nutrition Examination Surveys (NHANES) were used to estimate daily BPA intakes and examine temporal trends. Additionally, NHANES data on lifestyle/demographic/dietary factors previously reported to be associated with BPA exposures were examined to assess the resiliency of the reported associations (whether the association is maintained across the five surveys). Finally, various approaches for addressing issues with the use of BPA concentration data from spot urine samples were examined for their effect on trends and associations. Three approaches were assessed here: (i) use of generic literature-based 24-h urine excretion volumes, (ii) use of creatinine adjustments, and (iii) use of individual urine flow rate data from NHANES. Based on 2011-2012 NHANES urinary BPA data and assumptions described in this paper, the median daily intake for the overall population is approximately 25 ng/kg day; median intake estimates were approximately two to three orders of magnitude below current health-based guidance values. Estimates of daily BPA intake have decreased significantly compared to those from the 2003-2004 NHANES. Estimates of associations between lifestyle/demographic/dietary factors and BPA exposure revealed inconsistencies related to both NHANES survey year and the three approaches listed above; these results demonstrate the difficulties in interpreting urinary BPA data, despite efforts to account for urine dilution and translation of spot sample data to 24-h data. The results further underscore the importance of continued research on how to best utilize urinary measures of environmental chemicals in exposure research. Until a consensus is achieved regarding the best biomonitoring approaches for assessing exposures to short-lived chemicals using urine samples, research on factors associated with BPA exposures should include - and report results from - assessments using both volume-based urinary BPA and creatinine-adjusted urinary BPA data.
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Affiliation(s)
- Judy S LaKind
- LaKind Associates, LLC, 106 Oakdale Avenue, Catonsville, MD 21228, USA; Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, MD 21201, USA; Department of Pediatrics, Milton S. Hershey Medical Center, Penn State College of Medicine, Hershey, PA 17033, USA.
| | - Daniel Q Naiman
- Department of Applied Mathematics and Statistics, The Johns Hopkins University, 3200 N. Charles Street, Baltimore, MD 21228, USA.
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Shen Y, Zheng Y, Jiang J, Liu Y, Luo X, Shen Z, Chen X, Wang Y, Dai Y, Zhao J, Liang H, Chen A, Yuan W. Higher urinary bisphenol A concentration is associated with unexplained recurrent miscarriage risk: evidence from a case-control study in eastern China. PLoS One 2015; 10:e0127886. [PMID: 26011304 PMCID: PMC4444137 DOI: 10.1371/journal.pone.0127886] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Accepted: 04/20/2015] [Indexed: 11/18/2022] Open
Abstract
Background Evidence about the association between Bisphenol A (BPA) and the risk of recurrent miscarriage (RM) in human being is still limited. Objective We evaluated the association of urinary BPA concentrations with RM in human being. Methods A hospital-based 1:2 matched case-control study on RM was carried out in Suzhou and Kunshan in Jiangsu Province in China between August 2008 and November 2011. Total urinary BPA concentrations in 264 eligible urine samples (102 RM patients and 162 controls) were measured using liquid chromatography-tandem mass spectrometry (LC-MS/MS). The Wilcoxon test and conditional logistic regression were used to estimate the differences between the groups and odds ratios (OR) with 95% confidence intervals (CI), respectively. Results The median ± IQR (interquartile range) (P75-P25) values of non-creatinine-adjusted total urinary BPA levels in the RM patients and the controls were 1.66±3.69ng/ml and 0.58±1.07ng/ml, respectively (0.98±2.67μg/g Cr (creatinine) and 0.40±0.77μg/g Cr. The adjusted BPA level was significantly higher in the RM patients than in the controls (Wilcoxon test, Z = 4.476, P<0.001). Higher level of urinary BPA was significantly associated with an increased risk of RM (P-trend <0.001). Compared to the groups with urinary BPA levels less than 0.16μg/g Cr, the women with levels of 0.40–0.93μg/g Cr and 0.93μg/g Cr or above had a significantly higher risk of RM (OR = 3.91, 95%CI: 1.23–12.45 and OR = 9.34, 95%CI: 3.06–28.44) that persisted after adjusting for confounding factors. The time from recently RM date to recruitment does not significantly influence the urinary BPA level (P = 0.090). Conclusion Exposure to BPA may be associated with RM risk.
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Affiliation(s)
- Yueping Shen
- Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Department of Epidemiology and Health Statistics School of Public Health, Soochow University, Suzhou, 215123, PR China
| | - Yanmin Zheng
- Suzhou Center for Disease Prevention and Control, Suzhou 215004, China
| | - Jingting Jiang
- The Third Affiliated Hospital, Suzhou University, Changzhou 213003, China
| | - Yinmei Liu
- Department of Nosocomial Infection and Disease Control, Shanghai Tenth People’s Hospital, Shanghai 200072, China
| | - Xiaoming Luo
- Maternal and Child Health Bureau of Kunshan, Kunshan 215301, China
| | - Zongji Shen
- Department of Obstetrics and Gynaecology, First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Xin Chen
- Department of Obstetrics and Gynaecology, Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - Yan Wang
- School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou 215123, China
| | - Yiheng Dai
- School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou 215123, China
| | - Jing Zhao
- School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou 215123, China
| | - Hong Liang
- Department of Reproductive Epidemiology and Social Science, Shanghai Institute of Planned Parenthood Research, Shanghai 200032, China
| | - Aimin Chen
- Division of Epidemiology and Biostatistics, Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, Ohio 45221, United States of America
| | - Wei Yuan
- Department of Reproductive Epidemiology and Social Science, Shanghai Institute of Planned Parenthood Research, Shanghai 200032, China
- NPFPC Laboratory of Contraception and Devices, Shanghai 200032, China
- Institute of Reproduction & Development, Fudan University, Shanghai 200032, China
- * E-mail:
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Lorber M, Schecter A, Paepke O, Shropshire W, Christensen K, Birnbaum L. Exposure assessment of adult intake of bisphenol A (BPA) with emphasis on canned food dietary exposures. ENVIRONMENT INTERNATIONAL 2015; 77:55-62. [PMID: 25645382 PMCID: PMC4469126 DOI: 10.1016/j.envint.2015.01.008] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 01/13/2015] [Accepted: 01/16/2015] [Indexed: 05/02/2023]
Abstract
Bisphenol A (BPA) is a high-volume, synthetic compound found in epoxy resins and plastics used in food packaging. Food is believed to be a major source of BPA intake. In this study, we measured the concentration of BPA in convenience samplings of foodstuffs purchased in Dallas, Texas. Sampling entailed collection of 204 samples of fresh, frozen, and canned foods in two rounds in 2010. BPA was positive in 73% of the canned food samples, while it was found in only 7% of non-canned foods at low concentrations. The results of this food sampling program were used to calculate adult dietary intakes of BPA. A pathway approach combined food intakes, a "canned fraction" parameter which described what portion of total intake of that food came from canned products, and measured food concentrations. Dietary intakes were calculated as 12.6 ng/kg-day, of which 12.4 ng/kg-day was from canned foods. Canned vegetable intakes alone were 11.9 ng/kg-day. This dietary intake was compared to total intakes of BPA estimated from urine measurements of the National Health and Nutrition Examination Survey (NHANES). Total adult central tendency intakes ranged from 30 to 70 ng/kg-day for NHANES cycles between 2005 and 2010. Three possibilities were explored to explain the difference between these two approaches for intake estimation. Not all foods which may have been canned, particularly canned beverages such as soft drinks, were sampled in our food sampling program. Second, non-food pathways of exposure may be important for adults, including thermal paper exposures, and dust and air exposures. Finally, our canned food concentrations may not be adequately representative of canned foods in the United States; they were found to be generally lower compared to canned food concentrations measured in six other worldwide food surveys including three in North America. Our finding that canned food concentrations greatly exceeded non-canned concentrations was consistent with other studies, and underscores the importance of canned foods in the overall exposure of adults of BPA.
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Affiliation(s)
- Matthew Lorber
- National Center for Environmental Assessment, US Environmental Protection Agency, Washington, DC, USA.
| | - Arnold Schecter
- Dept of Pharmacology and Toxicology, University of Louisville, 2363 Valleta Lane, Louisville, KY, USA
| | | | - William Shropshire
- Environmental and Occupational Health Sciences Program, University of Texas School of Public Health, Dallas, TX, USA
| | - Krista Christensen
- Wisconsin Division of Public Health, Bureau of Environmental and Occupational Health, 1 West Wilson Street, Room 145, Madison, WI, USA
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Arbuckle TE, Marro L, Davis K, Fisher M, Ayotte P, Bélanger P, Dumas P, LeBlanc A, Bérubé R, Gaudreau É, Provencher G, Faustman EM, Vigoren E, Ettinger AS, Dellarco M, MacPherson S, Fraser WD. Exposure to free and conjugated forms of bisphenol A and triclosan among pregnant women in the MIREC cohort. ENVIRONMENTAL HEALTH PERSPECTIVES 2015; 123:277-84. [PMID: 25494523 PMCID: PMC4384201 DOI: 10.1289/ehp.1408187] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Accepted: 11/19/2014] [Indexed: 05/21/2023]
Abstract
BACKGROUND Bisphenol A (BPA) and triclosan (TCS) are two nonpersistent chemicals that have been frequently measured in spot urine samples from the general population but less so in pregnant women; however, data are limited on the free (bioactive) and conjugated forms of these phenols. OBJECTIVES The Maternal-Infant Research on Environmental Chemicals (MIREC) Study addressed these data gaps by utilizing stored maternal urine samples from a large multicenter cohort study of Canadian pregnant women. METHODS Concentrations of free and conjugated forms of BPA and TCS were measured in about 1,890 first-trimester urine samples by ultra performance liquid chromatography-tandem mass spectrometry using isotope dilution. RESULTS The glucuronides of BPA and TCS were the predominant forms of these chemicals measured (detected in 95% and 99% of samples, respectively), whereas the free forms were detected in 43% and 80% of samples, respectively. The geometric mean urinary concentrations for glucuronides of BPA and TCS were 0.80 μg/L (95% CI: 0.75, 0.85) and 12.30 μg/L (95% CI: 11.08, 13.65), respectively. Significant predictors of BPA included maternal age < 25 vs. ≥ 35 years, current smoking, low vs. high household income, and low vs. high education. For TCS, urinary concentrations were significantly higher in women ≥ 25 years of age, never vs. current smokers, and women with high household income and high education. CONCLUSIONS The results from this study represent the largest national-level data on urinary concentrations of free and conjugated forms of BPA and TCS in pregnant women and suggest that maternal characteristics predicting elevated urinary concentrations of these phenols largely act in opposite directions.
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Affiliation(s)
- Tye E Arbuckle
- Population Studies Division, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, Ontario, Canada
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Teeguarden JG, Twaddle NC, Churchwell MI, Yang X, Fisher JW, Seryak LM, Doerge DR. 24-hour human urine and serum profiles of bisphenol A: Evidence against sublingual absorption following ingestion in soup. Toxicol Appl Pharmacol 2015; 288:131-42. [PMID: 25620055 DOI: 10.1016/j.taap.2015.01.009] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Revised: 01/08/2015] [Accepted: 01/10/2015] [Indexed: 10/24/2022]
Abstract
Extensive first-pass metabolism of ingested bisphenol A (BPA) in the gastro-intestinal tract and liver restricts blood concentrations of bioactive BPA to <1% of total BPA in humans and non-human primates. Absorption of ingested BPA through non-metabolizing tissues of the oral cavity, recently demonstrated in dogs, could lead to the higher serum BPA concentrations reported in some human biomonitoring studies. We hypothesized that the extensive interaction with the oral mucosa by a liquid matrix, like soup, relative to solid food or capsules, might enhance absorption through non-metabolizing oral cavity tissues in humans, producing higher bioavailability and higher serum BPA concentrations. Concurrent serum and urine concentrations of d6-BPA, and its glucuronide and sulfate conjugates, were measured over a 24hour period in 10 adult male volunteers following ingestion of 30μg d6-BPA/kg body weight in soup. Absorption of d6-BPA was rapid (t1/2=0.45h) and elimination of the administered dose was complete 24h post-ingestion, evidence against any tissue depot for BPA. The maximum serum d6-BPA concentration was 0.43nM at 1.6h after administration and represented <0.3% of total d6-BPA. Pharmacokinetic parameters, pharmacokinetic model simulations, and the significantly faster appearance half-life of d6-BPA-glucuronide compared to d6-BPA (0.29h vs 0.45h) were evidence against meaningful absorption of BPA in humans through any non-metabolizing tissue (<1%). This study confirms that typical exposure to BPA in food produces picomolar to subpicomolar serum BPA concentrations in humans, not nM concentrations reported in some biomonitoring studies.
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Affiliation(s)
- Justin G Teeguarden
- Health Effects and Exposure Science, Pacific Northwest National Laboratory, Richland, WA 99352, USA; Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, OR 93771, USA.
| | - Nathan C Twaddle
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR 72079, USA.
| | - Mona I Churchwell
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR 72079, USA.
| | - Xiaoxia Yang
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR 72079, USA.
| | - Jeffrey W Fisher
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR 72079, USA.
| | - Liesel M Seryak
- Division of Epidemiology, College of Public Health, The Ohio State University, Columbus, OH 43210, USA.
| | - Daniel R Doerge
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR 72079, USA.
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Scientific Opinion on the risks to public health related to the presence of bisphenol A (BPA) in foodstuffs. EFSA J 2015. [DOI: 10.2903/j.efsa.2015.3978] [Citation(s) in RCA: 528] [Impact Index Per Article: 58.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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Adlard B, Davis K, Liang CL, S Curren M, Rodríguez-Dozal S, Riojas-Rodríguez H, Hernández-Ávila M, Foster W, Needham L, Wong LY, Weber JP, Marro L, Leech T, Van Oostdam J. Persistent organic pollutants (POPs) and metals in primiparous women: a comparison from Canada and Mexico. THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 500-501:302-13. [PMID: 25233368 PMCID: PMC4825328 DOI: 10.1016/j.scitotenv.2014.08.074] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 07/30/2014] [Accepted: 08/21/2014] [Indexed: 05/09/2023]
Abstract
Under the North American Commission for Environmental Cooperation (CEC) and its Sound Management of Chemicals (SMOC) program, a tri-national human contaminant monitoring initiative was completed to provide baseline exposure information for several environmental contaminants in Canada, Mexico and the United States (U.S). Blood samples were collected from primiparous women in Canada and Mexico, and were analysed for a suite of environmental contaminants including polychlorinated biphenyls (PCBs), dichlorodiphenyldichloroethylene(p,p'-DDE),beta-hexachlorocyclohexane (β-HCH), mercury and lead. A multiple stepwise linear regression analysis was conducted using data from Canadian and Mexican primiparous mothers, adjusting for ethnicity group, age, pre-pregnancy BMI, years at current city and ever-smoking status. Concentrations of p,p'-DDE, β-HCH, and lead were found to be higher among Mexican participants; however, concentrations of most PCBs among Mexican participants were similar to Canadian primiparous women after adjusting for covariates. Concentrations of total mercury were generally higher among Mexican primiparous women although this difference was smaller as age increased. This initial dataset can be used to determine priorities for future activities and to track progress in the management of the selected chemicals, both domestically and on a broader cooperative basis within North America.
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Affiliation(s)
- Bryan Adlard
- Chemicals Surveillance Bureau, Health Environments and Consumer Safety Branch, Health Canada, 269 Laurier Avenue West, Ottawa, ON, Canada K1A 0K9.
| | - Karelyn Davis
- Environmental Health Science and Research Bureau, Health Environments and Consumer Safety Branch, Health Canada, 50 Colombine Driveway, Tunney's Pasture, Ottawa, ON, Canada K1A 0K9.
| | - Chun Lei Liang
- Environmental Health Science and Research Bureau, Health Environments and Consumer Safety Branch, Health Canada, 50 Colombine Driveway, Tunney's Pasture, Ottawa, ON, Canada K1A 0K9.
| | - Meredith S Curren
- Chemicals Surveillance Bureau, Health Environments and Consumer Safety Branch, Health Canada, 269 Laurier Avenue West, Ottawa, ON, Canada K1A 0K9.
| | - Sandra Rodríguez-Dozal
- Environmental Health Department, Center for Population Heath Research, National Institute of Public Health. Av. Universidad #655, CP 62100 Cuernavaca, Morelos, Mexico.
| | - Horacio Riojas-Rodríguez
- Environmental Health Department, Center for Population Heath Research, National Institute of Public Health. Av. Universidad #655, CP 62100 Cuernavaca, Morelos, Mexico.
| | - Mauricio Hernández-Ávila
- Office of the Director, National Institute of Public Health. Av. Universidad #655, CP 62100 Cuernavaca, Morelos, Mexico.
| | - Warren Foster
- Department of Obstetrics & Gynecology, McMaster University, 1200 Main Street West, Hamilton, ON, Canada L8N 3Z5.
| | - Larry Needham
- National Center of Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Lee-Yang Wong
- National Center of Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA.
| | - Jean-Philippe Weber
- Institut national de santé publique, 945 Avenue Wolfe, Québec, QC, Canada G1V 5B3.
| | - Leonora Marro
- Environmental Health Science and Research Bureau, Health Environments and Consumer Safety Branch, Health Canada, 50 Colombine Driveway, Tunney's Pasture, Ottawa, ON, Canada K1A 0K9.
| | - Tara Leech
- Chemicals Surveillance Bureau, Health Environments and Consumer Safety Branch, Health Canada, 269 Laurier Avenue West, Ottawa, ON, Canada K1A 0K9.
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LaKind JS, Sobus JR, Goodman M, Barr DB, Fürst P, Albertini RJ, Arbuckle TE, Schoeters G, Tan YM, Teeguarden J, Tornero-Velez R, Weisel CP. A proposal for assessing study quality: Biomonitoring, Environmental Epidemiology, and Short-lived Chemicals (BEES-C) instrument. ENVIRONMENT INTERNATIONAL 2014; 73:195-207. [PMID: 25137624 PMCID: PMC4310547 DOI: 10.1016/j.envint.2014.07.011] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 07/12/2014] [Accepted: 07/16/2014] [Indexed: 05/03/2023]
Abstract
The quality of exposure assessment is a major determinant of the overall quality of any environmental epidemiology study. The use of biomonitoring as a tool for assessing exposure to ubiquitous chemicals with short physiologic half-lives began relatively recently. These chemicals present several challenges, including their presence in analytical laboratories and sampling equipment, difficulty in establishing temporal order in cross-sectional studies, short- and long-term variability in exposures and biomarker concentrations, and a paucity of information on the number of measurements required for proper exposure classification. To date, the scientific community has not developed a set of systematic guidelines for designing, implementing and interpreting studies of short-lived chemicals that use biomonitoring as the exposure metric or for evaluating the quality of this type of research for WOE assessments or for peer review of grants or publications. We describe key issues that affect epidemiology studies using biomonitoring data on short-lived chemicals and propose a systematic instrument--the Biomonitoring, Environmental Epidemiology, and Short-lived Chemicals (BEES-C) instrument--for evaluating the quality of research proposals and studies that incorporate biomonitoring data on short-lived chemicals. Quality criteria for three areas considered fundamental to the evaluation of epidemiology studies that include biological measurements of short-lived chemicals are described: 1) biomarker selection and measurement, 2) study design and execution, and 3) general epidemiological study design considerations. We recognize that the development of an evaluative tool such as BEES-C is neither simple nor non-controversial. We hope and anticipate that the instrument will initiate further discussion/debate on this topic.
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Affiliation(s)
- Judy S LaKind
- LaKind Associates, LLC 106 Oakdale Avenue, Catonsville, MD 21228, USA; Department of Epidemiology and Public Health, University of Maryland School of Medicine, USA; Department of Pediatrics, Penn State University College of Medicine, Milton S. Hershey Medical Center, USA.
| | - Jon R Sobus
- National Exposure Research Laboratory, Human Exposure and Atmospheric Sciences Division, US Environmental Protection Agency, Research Triangle Park, NC 27711, USA.
| | - Michael Goodman
- Department of Epidemiology, Rollins School of Public Health, Emory University, 1518 Clifton Rd., Atlanta, GA 30322, USA.
| | - Dana Boyd Barr
- Department of Environmental and Occupational Health, Rollins School of Public Health, Emory University, 1518 Clifton Road, NE, Room 272, Atlanta, GA 30322, USA.
| | - Peter Fürst
- Chemical and Veterinary Analytical Institute, Münsterland-Emscher-Lippe (CVUA-MEL) Joseph-König-Straße 40, D-48147, Münster D-48151, Germany.
| | - Richard J Albertini
- University of Vermont College of Medicine, P.O. Box 168, Underhill Center, VT 05490, USA.
| | - Tye E Arbuckle
- Population Studies Division, Healthy Environments and Consumer Safety Branch, Health Canada, 50 Colombine Dr., A.L. 0801A, Ottawa, ON K1A 0K9, Canada.
| | - Greet Schoeters
- Environmental Risk and Health Unit, VITO, Industriezone Vlasmeer 7, 2400 Mol, Belgium; University of Antwerp, Department of Biomedical Sciences, Belgium.
| | - Yu-Mei Tan
- National Exposure Research Laboratory, Human Exposure and Atmospheric Sciences Division, US Environmental Protection Agency, Research Triangle Park, NC 27711, USA.
| | - Justin Teeguarden
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, P.O. Box 999, MSIN P7-59, Richland, WA 99352, USA.
| | - Rogelio Tornero-Velez
- National Exposure Research Laboratory, Human Exposure and Atmospheric Sciences Division, US Environmental Protection Agency, Research Triangle Park, NC 27711, USA.
| | - Clifford P Weisel
- Environmental and Occupational Health Sciences Institute, Robert Wood Johnson Medical School, UMDNJ, 170 Frelinghuysen Road, Piscataway, NJ 08854, USA.
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Kolšek K, Gobec M, Mlinarič Raščan I, Sollner Dolenc M. Screening of bisphenol A, triclosan and paraben analogues as modulators of the glucocorticoid and androgen receptor activities. Toxicol In Vitro 2014; 29:8-15. [PMID: 25192815 DOI: 10.1016/j.tiv.2014.08.009] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 07/21/2014] [Accepted: 08/24/2014] [Indexed: 10/24/2022]
Abstract
A homeostasis of the glucocorticoid and androgen endocrine system is essential to human health. Their disturbance can lead to various diseases, for example cardiovascular, inflammatory and autoimmune diseases, infertility, cancer. Fifteen widely used industrial chemicals that disrupt endocrine activity were selected for evaluation of potential (anti)glucocorticoid and (anti)androgenic activities. The human breast carcinoma MDA-kb2 cell line was utilized for reporter gene assays, since it expresses both the androgen and the glucocorticoid-responsive reporter. Two new antiandrogens, 4,4'-sulfonylbis(2-methylphenol) (dBPS) and 4,4'-thiodiphenol (THIO), and two new antiglucocorticoids, bisphenol Z and its analog bis[4-(2-hydroxyethoxy)phenyl] sulfone (BHEPS) were identified. Moreover, four new glucocorticoid agonists (methyl paraben, ethyl paraben, propyl paraben and bisphenol F) were found. To elucidate the structure-activity relationship of bisphenols, we performed molecular docking experiments with androgen and glucocorticoid receptor. These docking experiments had shown that bulky structures such as BHEPS and bisphenol Z act as antiglucocorticoid, because they are positioned toward helix H12 in the antagonist conformation and could therefore be responsible for H12 conformational change and the switch between agonistic and antagonistic conformation of receptor. On the other hand smaller structures cannot interact with H12. The results of in vitro screening of fifteen industrial chemicals as modulators of the glucocorticoid and androgen receptor activities demand additional in vivo testing of these chemicals for formulating any relevant hazard identification to human health.
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Affiliation(s)
- Katra Kolšek
- Faculty of Pharmacy, University of Ljubljana, Aškerčeva 7, 1000 Ljubljana, Slovenia
| | - Martina Gobec
- Faculty of Pharmacy, University of Ljubljana, Aškerčeva 7, 1000 Ljubljana, Slovenia
| | | | - Marija Sollner Dolenc
- Faculty of Pharmacy, University of Ljubljana, Aškerčeva 7, 1000 Ljubljana, Slovenia.
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Mattison DR, Karyakina N, Goodman M, LaKind JS. Pharmaco- and toxicokinetics of selected exogenous and endogenous estrogens: A review of the data and identification of knowledge gaps. Crit Rev Toxicol 2014; 44:696-724. [DOI: 10.3109/10408444.2014.930813] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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49
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Changes in memory and synaptic plasticity induced in male rats after maternal exposure to bisphenol A. Toxicology 2014; 322:51-60. [DOI: 10.1016/j.tox.2014.05.001] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2014] [Revised: 04/30/2014] [Accepted: 05/01/2014] [Indexed: 11/17/2022]
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50
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Pollock T, Tang B, deCatanzaro D. Triclosan exacerbates the presence of 14C-bisphenol A in tissues of female and male mice. Toxicol Appl Pharmacol 2014; 278:116-23. [DOI: 10.1016/j.taap.2014.04.017] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Revised: 04/10/2014] [Accepted: 04/19/2014] [Indexed: 02/01/2023]
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