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Nehring I, Staniszewska M. Comparison of prenatal and postnatal exposure to endocrine active phenol derivatives in mammals - Humans and Baltic grey seals. MARINE POLLUTION BULLETIN 2023; 196:115567. [PMID: 37741109 DOI: 10.1016/j.marpolbul.2023.115567] [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: 07/12/2023] [Revised: 08/30/2023] [Accepted: 09/19/2023] [Indexed: 09/25/2023]
Abstract
Bisphenol A (BPA), 4-tert-octylphenol (4-t-OP), and 4-nonylphenol (4-NP) are characterised by their endocrine active properties. Their negative effects on the development of the body are doubly important in the reproduction process. The goal was to compare the maternal transfer of phenol derivatives in humans and seals and identify factors that may affect the load of phenol derivatives entering the mother's body, which translates into a risk to the offspring. Phenol derivatives were determined using HPLC-FLD. It was shown that higher concentrations of phenol derivatives in blood or milk were detected in humans (mothers and newborns) compared to concentrations in Baltic seals. This was influenced by external exposure factors, i.e., leaching of phenol derivatives from food packaging or dermal contact. The authors conclude that milk is the main component in the maternal transfer of BPA to the next generation in humans, while blood is a carrier of alkylphenols, particularly 4-tert-octylphenol.
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Affiliation(s)
- Iga Nehring
- Department of Chemical Oceanography and Marine Geology, Faculty of Oceanography and Geography, University of Gdańsk, Al. Marszałka Piłsudskiego 46, 81-378 Gdynia, Poland
| | - Marta Staniszewska
- Department of Chemical Oceanography and Marine Geology, Faculty of Oceanography and Geography, University of Gdańsk, Al. Marszałka Piłsudskiego 46, 81-378 Gdynia, Poland.
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Mit C, Bado-Nilles A, Daniele G, Giroud B, Vulliet E, Beaudouin R. The toxicokinetics of bisphenol A and its metabolites in fish elucidated by a PBTK model. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2022; 247:106174. [PMID: 35462154 DOI: 10.1016/j.aquatox.2022.106174] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 04/14/2022] [Accepted: 04/15/2022] [Indexed: 06/14/2023]
Abstract
Bisphenol A (BPA) is a chemical of major concern due to its endocrine disrupting function, high production volume, and persistence in the aquatic environment. Consequently, organisms such as fish are subject to chronic exposure to BPA. However, physiologically-based toxicokinetic (PBTK) models, which are valuable tools to improve the understanding of a chemical's fate in an organism, have never been specifically adapted to model BPA toxicokinetics (TK) in fish. In our work, an existing PBTK developed for four different fish species was modified to model BPA ADME processes (absorption, distribution, metabolization and excretion). The metabolization of BPA into BPA-monoglucuronide (BPA gluc) and BPA-monosulfate (BPA sulf) and their TK in various organs was taking into account in the model. Experiments were performed to generate BPA TK data in a model species commonly used in ecotoxicology, the stickleback. The model structure had to include two sites of metabolization to simulate BPA TK accurately in stickleback organs. Thus, the fish liver may not be the only site of the metabolization of BPA: plasma or gills could also play a role in BPA metabolization. The PBTK model predictive performance evaluated on literature data in zebrafish and rainbow trout concurs with this conclusion. Finally, a calibration mixing data from the three species was compared to the calibration on stickleback data only.
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Affiliation(s)
- Corentin Mit
- Experimental Toxicology and Modeling Unit, INERIS, UMR-I 02 SEBIO, Verneuil en Halatte 65550, France; Ecotoxicology of Substances and Fields Unit, INERIS, UMR-I 02 SEBIO, Verneuil en Halatte 65550, France
| | - Anne Bado-Nilles
- Ecotoxicology of Substances and Fields Unit, INERIS, UMR-I 02 SEBIO, Verneuil en Halatte 65550, France
| | - Gaëlle Daniele
- Univ Lyon, CNRS, Université Claude Bernard Lyon 1, Institut des Sciences Analytiques, UMR 5280, 5 rue de la Doua, Villeurbanne F-69100, France
| | - Barbara Giroud
- Univ Lyon, CNRS, Université Claude Bernard Lyon 1, Institut des Sciences Analytiques, UMR 5280, 5 rue de la Doua, Villeurbanne F-69100, France
| | - Emmanuelle Vulliet
- Univ Lyon, CNRS, Université Claude Bernard Lyon 1, Institut des Sciences Analytiques, UMR 5280, 5 rue de la Doua, Villeurbanne F-69100, France
| | - Rémy Beaudouin
- Experimental Toxicology and Modeling Unit, INERIS, UMR-I 02 SEBIO, Verneuil en Halatte 65550, France.
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Gruber ES, Stadlbauer V, Pichler V, Resch-Fauster K, Todorovic A, Meisel TC, Trawoeger S, Hollóczki O, Turner SD, Wadsak W, Vethaak AD, Kenner L. To Waste or Not to Waste: Questioning Potential Health Risks of Micro- and Nanoplastics with a Focus on Their Ingestion and Potential Carcinogenicity. EXPOSURE AND HEALTH 2022; 15:33-51. [PMID: 36873245 PMCID: PMC9971145 DOI: 10.1007/s12403-022-00470-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 12/30/2021] [Accepted: 02/11/2022] [Indexed: 05/27/2023]
Abstract
Micro- and nanoplastics (MNPs) are recognized as emerging contaminants, especially in food, with unknown health significance. MNPs passing through the gastrointestinal tract have been brought in context with disruption of the gut microbiome. Several molecular mechanisms have been described to facilitate tissue uptake of MNPs, which then are involved in local inflammatory and immune responses. Furthermore, MNPs can act as potential transporters ("vectors") of contaminants and as chemosensitizers for toxic substances ("Trojan Horse effect"). In this review, we summarize current multidisciplinary knowledge of ingested MNPs and their potential adverse health effects. We discuss new insights into analytical and molecular modeling tools to help us better understand the local deposition and uptake of MNPs that might drive carcinogenic signaling. We present bioethical insights to basically re-consider the "culture of consumerism." Finally, we map out prominent research questions in accordance with the Sustainable Development Goals of the United Nations.
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Affiliation(s)
- Elisabeth S. Gruber
- Division of Visceral Surgery, Department of General Surgery, Medical University of Vienna, Vienna, Austria
| | - Vanessa Stadlbauer
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Medical University of Graz, Graz, Austria
- Center for Biomarker Research in Medicine (CBmed), Graz, Austria
| | - Verena Pichler
- Department of Pharmaceutical Sciences, Division of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | | | - Andrea Todorovic
- Materials Science and Testing of Polymers, Montanuniversitaet Leoben, Styria, Austria
| | - Thomas C. Meisel
- General and Analytical Chemistry, Montanuniversitaet Leoben, Styria, Austria
| | - Sibylle Trawoeger
- Division of Systematic Theology and its Didactics, Faculty of Catholic Theology, University of Wuerzburg, Wuerzburg, Germany
| | - Oldamur Hollóczki
- Mulliken Center for Theoretical Chemistry, University of Bonn, Bonn, Germany
| | - Suzanne D. Turner
- Department of Pathology, University of Cambridge, Cambridge, CB2 1QP UK
- Central European Institute of Technology, Masaryk University, 602 00 Brno, Czech Republic
| | - Wolfgang Wadsak
- Center for Biomarker Research in Medicine (CBmed), Graz, Austria
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | - A. Dick Vethaak
- Department of Environment and Health, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
- Unit of Marine and Coastal Systems, Deltares, P.O. Box 177, 2600 MH Delft, Netherlands
| | - Lukas Kenner
- Center for Biomarker Research in Medicine (CBmed), Graz, Austria
- Christian Doppler Laboratory for Applied Metabolomics, Medical University of Vienna, Vienna, Austria
- Division of Experimental and Laboratory Animal Pathology, Department of Pathology Medical, University of Vienna, Vienna, Austria
- Unit of Laboratory Animal Pathology, University of Veterinary Medicine Vienna, Vienna, Austria
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Ougier E, Zeman F, Antignac JP, Rousselle C, Lange R, Kolossa-Gehring M, Apel P. Human biomonitoring initiative (HBM4EU): Human biomonitoring guidance values (HBM-GVs) derived for bisphenol A. ENVIRONMENT INTERNATIONAL 2021; 154:106563. [PMID: 33894553 DOI: 10.1016/j.envint.2021.106563] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 04/05/2021] [Accepted: 04/07/2021] [Indexed: 06/12/2023]
Abstract
The "European Human Biomonitoring Initiative" (HBM4EU) derives human biomonitoring guidance values (HBM-GVs) for the general population (HBM-GVGenPop) and/or for occupationally exposed adults (HBM-GVWorker) for several priority substances and substance groups as identified by policy makers, scientists and stakeholders at EU and national level, including bisphenol A (BPA). Human exposure to BPA is widespread and of particular concern because of its known endocrine-disrupting properties. Unlike the conjugated forms of BPA circulating in the body, free BPA is known to interact with the nuclear estrogen receptors. Because free BPA is considered to be more toxicologically active than the conjugated forms (e.g. BPA-glucuronide (BPA-G) and BPA-sulfate (BPA-S)), its measurement in blood provides the superior surrogate of the biologically effective dose. However, considering the difficulty of implementing blood sampling in large HBM cohorts, as well as the current analytical capacities complying with the quality assurance (QA)/quality control (QC) schemes, total BPA in urine (i.e. the sum of free and conjugated forms of BPA measured after an hydrolysis of phase II metabolites) was retained as the relevant exposure biomarker for BPA. HBM-GVGenPop for total BPA in urine of 230 µg/L and 135 µg/L for adults and children, respectively, were developed on the basis of toxicological data. To derive these values, the concentrations of urinary total BPA consistent with a steady-state exposure to the temporary Tolerable Daily Intake (t-TDI) of 4 µg/kg bw/day set in 2015 by the European Food Safety Authority (EFSA) were estimated. The BPA human physiologically-based pharmacokinetic (PBPK) model developed by Karrer et al. (2018) was used, assuming an oral exposure to BPA at the t-TDI level averaged over 24 h. Dermal uptake of BPA is suspected to contribute substantially to the total BPA body burden, which in comparison with the oral route, is generating a higher ratio of free BPA to total BPA in blood. Therefore, an alternative approach for calculating the HBM-GVGenPop according to the estimated relative contributions of both the oral and dermal routes to the global BPA exposure is also discussed. Regarding BPA exposure at the workplace, the steady-state concentration of urinary total BPA was estimated after a dermal uptake of BPA that would generate the same concentration of free BPA in plasma (considered as the bioactive form) as would a 24 h-averaged intake to the European Chemicals Agency (ECHA)'s oral DNEL of 8 µg BPA/kg bw/day set for workers. The predicted concentration of urinary total BPA at steady-state is equivalent to, or exceeds the 95th percentile of total BPA in urine measured in different European HBM studies conducted in the general population. Thus, no HBM-GVWorker was proposed, as the high background level of BPA coming from environmental exposure - mostly through food intake - is making the discrimination with the occupational exposure to BPA difficult.
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Affiliation(s)
- Eva Ougier
- French Agency for Food, Environmental and Occupational Health & Safety (Anses), 14 rue Pierre et Marie Curie, 94701 Maisons-Alfort Cedex, France.
| | - Florence Zeman
- French National Institute for Industrial Environment and Risks (INERIS), Parc ALATA BP2, 60550 Verneuil en Halatte, France
| | | | - Christophe Rousselle
- French Agency for Food, Environmental and Occupational Health & Safety (Anses), 14 rue Pierre et Marie Curie, 94701 Maisons-Alfort Cedex, France
| | - Rosa Lange
- German Environment Agency (UBA), Corrensplatz 1, 14195 Berlin, Germany
| | | | - Petra Apel
- German Environment Agency (UBA), Corrensplatz 1, 14195 Berlin, Germany
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Liguori F, Moreno-Marrodan C, Barbaro P. Biomass-derived chemical substitutes for bisphenol A: recent advancements in catalytic synthesis. Chem Soc Rev 2021; 49:6329-6363. [PMID: 32749443 DOI: 10.1039/d0cs00179a] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Bisphenol A is an oil-derived, large market volume chemical with a wide spectrum of applications in plastics, adhesives and thermal papers. However, bisphenol A is not considered safe due to its endocrine disrupting properties and reproductive toxicity. Several functional substitutes of bisphenol A have been proposed in the literature, produced from plant biomass. Unless otherwise specified, the present review covers the most significant contributions that appeared in the time span January 2015-August 2019, describing the sustainable catalytic synthesis of rigid diols from biomass derivatives. The focus is thereupon on heterogeneous catalysis, use of green solvents and mild conditions, cascade processes in one-pot, and continuous flow setups. More than 500 up-to-date references describe the various substitutes proposed and the catalytic methods for their manufacture, broken down according to the main biomass types from which they originate.
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Affiliation(s)
- Francesca Liguori
- Consiglio Nazionale delle Ricerche, Istituto di Chimica dei Composti Organo Metallici, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Firenze, Italy.
| | - Carmen Moreno-Marrodan
- Consiglio Nazionale delle Ricerche, Istituto di Chimica dei Composti Organo Metallici, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Firenze, Italy.
| | - Pierluigi Barbaro
- Consiglio Nazionale delle Ricerche, Istituto di Chimica dei Composti Organo Metallici, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Firenze, Italy.
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Chang HP, Kim SJ, Wu D, Shah K, Shah DK. Age-Related Changes in Pediatric Physiology: Quantitative Analysis of Organ Weights and Blood Flows. AAPS JOURNAL 2021; 23:50. [DOI: 10.1208/s12248-021-00581-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Accepted: 03/11/2021] [Indexed: 02/08/2023]
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Bisphenol A and S in the Urine of Newborns: Plastic for Non-Food Use Still without Rules. BIOLOGY 2021; 10:biology10030188. [PMID: 33802301 PMCID: PMC8001236 DOI: 10.3390/biology10030188] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 02/18/2021] [Accepted: 02/26/2021] [Indexed: 11/17/2022]
Abstract
Simple Summary The aim of our study was to assess the effects of Bisphenols exposure on pregnancy and neonatal life. In this optic, we have: (a) determined Bisphenols concentration levels (Bisphenol A and Bisphenol S) in a group of newborns and their mothers, (b) identified factors, habits and devices possibly responsible for Bisphenols uptake, and (c) determined some possible health effect of Bipshenols exposure. The statistical analyses showed no significant correlations between maternal and neonatal Bisphenols concentration levels. In newborns, on the contrary, a positive correlation between pacifier use and Bisphenol S total and free concentration was detected. Beside, a significant correlation was also found between oral glucose administration and concentration levels of free Bisphenols A. Our study points to a central role of lifestyle, hospital procedures and neonatal devices in inducing Bisphenols exposure during perinatal period. This is the first report of Bisphenols contamination in newborns due to widely non-alimentary products destined for newborn care (glucose solution containers for Bisphenol A and the pacifiers for the Bisphenol S). Further studies are advocated to clarify both the impact of such other Bisphenols forms on human health and the potential Bisphenol A exposure sources during neonatal and childhood life. Abstract The aim of the present study was to assess the effects of bisphenol (BP) exposure on pregnancy and neonatal life. We have (a) determined BP (BPA and BPS) concentration levels in a group of newborns and their mothers; (b) identified factors, habits, and devices possibly responsible for BP uptake; and (c) determined the effect of BP exposure. No significant correlations were detected between maternal and neonatal BP concentration levels. In newborns, positive correlations between pacifier use and BPS total (p = 0.04) and free BPS (p = 0.03) concentrations were detected. A significant correlation was also found between oral glucose administration and concentration levels of free BPA (p < 0.05). Our study points to a central role of lifestyle, hospital procedures, and neonatal devices in inducing BP exposure, especially during the perinatal period. This is the first report of BP contamination in newborns due to widely non-alimentary products designed for newborn care, such as glucose-solution containers for BPA and pacifiers for BPS. Further studies are advocated in order to clarify both the impact of other BP forms on human health and development, as well as potential BPA exposure sources during neonatal and childhood life.
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Deng L, Liu H, Deng Q. Physiologically-based pharmacokinetic modeling of benzo(a)pyrene and the metabolite in humans of different ages. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2021; 31:202-214. [PMID: 31296039 DOI: 10.1080/09603123.2019.1640355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Accepted: 07/02/2019] [Indexed: 06/09/2023]
Abstract
Age-specific differences in the pharmacokinetics of benzo(a)pyrene (BaP) and its metabolite 3-hydroxybenzo(a)pyrene (3-OHBaP) potentially affect time courses of tissue concentration; however, the quantitative impact of these differences is not well characterized. Our objective was to quantify the effect of age-specific differences in physiological and biochemical parameters on the pharmacokinetics of BaP and 3-OHBaP from newborn at birth to adulthood following inhalation exposure. The time courses of BaP and 3-OHBaP were simulated by using a physiologically based pharmacokinetic model with Advanced Continuous Simulation Language (ACSLX). The concentrations of BaP increased with age in the liver but decreased with age in most tissues, urine, and blood. The concentrations of 3-OHBaP were the highest in the newborns. Our results also showed that the concentration of BaP has almost reached a steady state in the kidney, liver, lung, rapidly perfused tissues, slowly perfused tissues, and skin except for adipose tissues. However, the concentration of 3-OHBaP has reached a steady state in all tissues. This study suggests that age-specific parameters have an effect on the pharmacokinetics of BaP and 3-OHBaP. In particular, tissue concentration in the newborns is higher than other age groups, which indicates that the newborns are susceptible to environmental BaP exposure.
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Affiliation(s)
- Linjing Deng
- School of Architecture and Art, Central South University , Changsha, HN, China
| | - Hui Liu
- School of Architecture and Art, Central South University , Changsha, HN, China
| | - Qihong Deng
- School of Architecture and Art, Central South University , Changsha, HN, China
- XiangYa School of Public Health, Central South University , Changsha, China
- School of Public Health, Zhengzhou University , Zhengzhou, HN, China
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Gingrich J, Filipovic D, Conolly R, Bhattacharya S, Veiga-Lopez A. Pregnancy-specific physiologically-based toxicokinetic models for bisphenol A and bisphenol S. ENVIRONMENT INTERNATIONAL 2021; 147:106301. [PMID: 33360411 PMCID: PMC7856209 DOI: 10.1016/j.envint.2020.106301] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 11/12/2020] [Accepted: 11/21/2020] [Indexed: 06/12/2023]
Abstract
Predictions from physiologically based toxicokinetic (PBTK) models can help inform human health risk assessment for potentially toxic chemicals in the environment. Bisphenol S (BPS) is the second most abundant bisphenol detected in humans in the United States, after bisphenol A (BPA). We have recently demonstrated that BPS, much like BPA, can cross the placental barrier and disrupt placental function. Differences in physicochemical properties, toxicokinetics, and exposure outcomes between BPA and other bisphenols prevent direct extrapolation of existing BPA PBTK models to BPS. The current study aimed to develop pregnancy-specific PBTK (p-PBTK) models for BPA and BPS, using a common p-PBTK model structure. Novel paired maternal and fetal pregnancy data sets for total, unconjugated, and conjugated BPA and BPS plasma concentrations from three independent studies in pregnant sheep were used for model calibration. The nine-compartment (maternal blood, liver, kidney, fat, placenta and rest of body, and fetal liver, blood and rest of body) models simulated maternal and fetal experimental data for both BPA and BPS within one standard deviation for the majority of the experimental data points, highlighting the robustness of both models. Simulations were run to examine fetal exposure following daily maternal exposure to BPA or BPS at their tolerable daily intake dose over a two-week period. These predictive simulations show fetal accumulation of both bisphenols over time. Interestingly, the steady-state approximation following this dosing strategy achieved a fetal concentration of unconjugated BPA to levels observed in cord blood from human biomonitoring studies. These models advance our understanding of bisphenolic compound toxicokinetics during pregnancy and may be used as a quantitative comparison tool in future p-PBTK models for related chemicals.
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Affiliation(s)
- Jeremy Gingrich
- Department of Pharmacology and Toxicology, College of Natural Sciences, Michigan State University, East Lansing, MI 48824, USA
| | - David Filipovic
- Department of Biomedical Engineering, Michigan State University, East Lansing, MI 48824, USA; Department of Computational Mathematics, Science and Engineering, Michigan State University, East Lansing, MI 48824, USA; Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI 48824, USA
| | - Rory Conolly
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI 48824, USA
| | - Sudin Bhattacharya
- Department of Pharmacology and Toxicology, College of Natural Sciences, Michigan State University, East Lansing, MI 48824, USA; Department of Biomedical Engineering, Michigan State University, East Lansing, MI 48824, USA; Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI 48824, USA; Center for Research on Ingredient Safety, Michigan State University, East Lansing, MI 48824, USA; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI 48824, USA
| | - Almudena Veiga-Lopez
- Department of Pathology, University of Illinois at Chicago, Chicago, IL 60612, USA; The ChicAgo Center for Health and Environment, University of Illinois at Chicago, Chicago, IL 60612, USA.
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England-Mason G, Liu J, Martin JW, Giesbrecht GF, Letourneau N, Dewey D. Postnatal BPA is associated with increasing executive function difficulties in preschool children. Pediatr Res 2021; 89:686-693. [PMID: 32408341 PMCID: PMC7666018 DOI: 10.1038/s41390-020-0922-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 03/30/2020] [Accepted: 04/09/2020] [Indexed: 11/09/2022]
Abstract
BACKGROUND Early bisphenol exposure may have consequences for executive function development, but less is known about potential sex effects. We hypothesized that early bisphenol A (BPA) and bisphenol S (BPS) exposures would be associated with sex-dependent changes in preschool executive function. METHODS A subsample of the Alberta Pregnancy Outcomes and Nutrition (APrON) cohort (n = 312) provided maternal second trimester (prenatal) and 3-month postpartum (postnatal) urine samples, from which BPA and BPS concentrations were quantified. When children were age 2 and 4, mothers completed the Behavior Rating Inventory of Executive Function-Preschool Version (BRIEF-P). Changes in standardized T scores on the BRIEF-P indexes of inhibitory self-control, flexibility, and emergent metacognition were investigated. RESULTS Adjusted multivariate regression analyses showed that child sex modified the associations between maternal postnatal BPA and changes in executive function. Higher maternal postnatal BPA concentrations predicted increasing difficulties from age 2 to 4 in the domains of inhibitory self-control and emergent metacognition in female, but not male children. The other bisphenol concentrations were not associated with changes in executive function. CONCLUSION Due to the ubiquity of BPA exposure among breastfeeding women, these findings justify further investigation on the effects of postnatal bisphenol exposure on child cognitive development. IMPACT Higher concentrations of maternal BPA at 3-month postpartum were associated with increasing difficulties in inhibitory self-control and emergent metacognition from age 2 to 4 in girls, but not boys. Prenatal BPA and prenatal/postnatal BPS were not significant predictors of changes in executive function in boys and girls. The current study extends previous research to show that maternal postnatal BPA could also impact child executive function. Due to the ubiquity of BPA exposure among breastfeeding women, the current findings suggest that additional precautions may be needed to protect infants' neurodevelopment from indirect exposure to BPA.
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Affiliation(s)
- Gillian England-Mason
- Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Canada,Owerko Centre, Alberta Children’s Hospital Research Institute, University of Calgary, Calgary, Canada
| | - Jiaying Liu
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Canada
| | - Jonathan W. Martin
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Canada,Science for Life Laboratory, Department of Analytical Chemistry and Environmental Sciences, Stockholm University, Stockholm, Sweden
| | - Gerald F. Giesbrecht
- Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Canada,Owerko Centre, Alberta Children’s Hospital Research Institute, University of Calgary, Calgary, Canada,Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Canada,Department of Psychology, Faculty of Arts, University of Calgary, Calgary, Canada
| | - Nicole Letourneau
- Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Canada,Owerko Centre, Alberta Children’s Hospital Research Institute, University of Calgary, Calgary, Canada,Faculty of Nursing, University of Calgary, Calgary, Canada,Department of Psychiatry, Cumming School of Medicine, University of Calgary, Calgary, Canada
| | - Deborah Dewey
- Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada. .,Owerko Centre, Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada. .,Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada. .,Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada.
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Sasso AF, Pirow R, Andra SS, Church R, Nachman RM, Linke S, Kapraun DF, Schurman SH, Arora M, Thayer KA, Bucher JR, Birnbaum LS. Pharmacokinetics of bisphenol A in humans following dermal administration. ENVIRONMENT INTERNATIONAL 2020; 144:106031. [PMID: 32798798 PMCID: PMC9210257 DOI: 10.1016/j.envint.2020.106031] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 07/29/2020] [Accepted: 07/31/2020] [Indexed: 05/27/2023]
Abstract
BACKGROUND Human exposures to bisphenol A (BPA) are widespread. The current study addresses uncertainties regarding human pharmacokinetics of BPA following dermal exposure. OBJECTIVE To examine the absorption, distribution, metabolism and excretion of BPA in humans following dermal administration. METHODS We dermally administered deuterated BPA (d6-BPA) to 10 subjects (6 men and 4 women) at a dose of 100 µg/kg over a 12-hour period and conducted blood and urine analysis from the beginning of dosing through a three- or six-day period. We present time-course serum and urine concentrations of total and unconjugated ("free") d6-BPA and used this information to calculate terminal half-life and area under the curve. RESULTS AND CONCLUSIONS Detectable serum levels of total d6-BPA were observed at 1.4 h after the start of dosing, and a maximum serum concentration (Cmax) of 3.26 nM was observed. Free d6-BPA was detectable in serum 2.8 h after start of dermal administration, with Cmax of 0.272 nM. Beginning at approximately seven hours and continuing to 12 h (which corresponds to cessation of exposure), the concentration of free and total serum d6-BPA plateaued. The terminal half-lives of total d6-BPA and free d6-BPA in the body were 21.4 ± 9.81 h and 17.6 ± 7.69 h, respectively. Elimination from the body was rate-limited by kinetics in the dermal compartment. Free d6-BPA was a greater percentage of the area under the curve of total serum BPA (8.81%) compared to the 0.56% observed in our previously published oral study. Recovery of total d6-BPA in urine was <2% of the applied dose after six days. Analysis of the area under the curve for dermal and oral administration revealed that 2.2% of the dermal dose became systemically available. These data are in line with prior studies indicating how pharmacokinetics of BPA differ following oral and dermal exposures. Dermal exposure resulted in a longer apparent half-life and higher free:total d6-BPA ratio compared to oral.
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Affiliation(s)
- Alan F Sasso
- U.S. Environmental Protection Agency (US EPA), Office of Research and Development, Center for Public Health and Environmental Assessment (CPHEA), Chemical Pollutant Assessment Division (CPAD), 1200 Pennsylvania Avenue, NW (8623R), Washington, DC 20460, USA.
| | - Ralph Pirow
- German Federal Institute for Risk Assessment (BfR), Department of Chemical and Product Safety, Max-Dohrn-Strasse 8-10, 10589 Berlin, Germany.
| | - Syam S Andra
- Exposure Biology, Senator Frank R. Lautenberg Environmental Health Sciences Laboratory, Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
| | - Rebecca Church
- Clinical Research Unit, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), P.O. Box 12233, Mail Drop CU-01, Research Triangle Park, NC 27709, USA.
| | - Rebecca M Nachman
- U.S. Environmental Protection Agency (US EPA), Office of Research and Development, Center for Public Health and Environmental Assessment (CPHEA), Chemical Pollutant Assessment Division (CPAD), 1200 Pennsylvania Avenue, NW (8623R), Washington, DC 20460, USA.
| | - Susanne Linke
- German Federal Institute for Risk Assessment (BfR), Department of Chemical and Product Safety, Max-Dohrn-Strasse 8-10, 10589 Berlin, Germany.
| | - Dustin F Kapraun
- U.S. Environmental Protection Agency (US EPA), Office of Research and Development, Center for Public Health and Environmental Assessment (CPHEA), Chemical Pollutant Assessment Division (CPAD), 1200 Pennsylvania Avenue, NW (8623R), Washington, DC 20460, USA.
| | - Shepherd H Schurman
- Clinical Research Unit, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), P.O. Box 12233, Mail Drop CU-01, Research Triangle Park, NC 27709, USA.
| | - Manish Arora
- Exposure Biology, Senator Frank R. Lautenberg Environmental Health Sciences Laboratory, Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
| | - Kristina A Thayer
- U.S. Environmental Protection Agency (US EPA), Office of Research and Development, Center for Public Health and Environmental Assessment (CPHEA), Chemical Pollutant Assessment Division (CPAD), 1200 Pennsylvania Avenue, NW (8623R), Washington, DC 20460, USA.
| | - John R Bucher
- Division of the National Toxicology Program (NTP), National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), P.O. Box 12233, Mail Drop K2-02, Research Triangle Park, NC 27709, USA.
| | - Linda S Birnbaum
- Division of the National Toxicology Program (NTP), National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), P.O. Box 12233, Mail Drop B2-01, Research Triangle Park, NC 27709, USA.
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Concentration and Variability of Urinary Phthalate Metabolites, Bisphenol A, Triclosan, and Parabens in Korean Mother–Infant Pairs. SUSTAINABILITY 2020. [DOI: 10.3390/su12208516] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Concentrations of toxic chemicals in mothers highly correlate with those in their children; moreover, the levels are higher in children than in mothers. Non-persistent chemicals with a short half-life including phthalate metabolites, bisphenol A (BPA), triclosan (TCS), and parabens are metabolized and excreted through urine. Therefore, we assessed the urine concentrations of phthalate metabolites, BPA, TCS, and parabens; correlated the concentrations with exposure levels; and assessed the within-individual variability of these chemicals in mothers and their infants. We collected 225 and 71 samples from 45 mothers and 36 infants, respectively. For the variability analysis, 189 and 42 samples were collected from nine mothers and their infants, respectively. The median concentrations of phthalate metabolites in the mothers and infants were 0.53–26.2 and 0.81–61.8 μg/L, respectively, and those of BPA, TCS, and parabens were 0.24–76.3 and 2.06–12.5 μg/L, respectively. The concentrations of monoethyl phthalate (MEP), mono-N-butyl phthalate (MnBP), mono-isobutyl phthalate (MiBP), and BPA in the mothers were positively correlated with those in infants (0.45, 0.62, and 0.89, respectively; p < 0.05), whereas toxic chemical concentrations in infants were higher than those in the mothers. With respect to the within-individual intraclass correlation coefficient (ICC), the first morning void (FMV) of the mothers had high ICCs for all chemicals (range: 0.72–0.99), except for BPA, monobenzyl phthalate (MBzP), and monocarboxyoctyl phthalate (MCOP). The ICC values of most chemicals were moderate to high (range: 0.34–0.99) in the first morning void. However, there were different patterns of ICCs in the infants. These findings indicate the importance of mother–infant pair studies and the necessity of research in infants, as they have different exposure sources and pathways from adults.
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Pletz J, Blakeman S, Paini A, Parissis N, Worth A, Andersson AM, Frederiksen H, Sakhi AK, Thomsen C, Bopp SK. Physiologically based kinetic (PBK) modelling and human biomonitoring data for mixture risk assessment. ENVIRONMENT INTERNATIONAL 2020; 143:105978. [PMID: 32763630 PMCID: PMC7684529 DOI: 10.1016/j.envint.2020.105978] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 07/11/2020] [Accepted: 07/12/2020] [Indexed: 06/02/2023]
Abstract
Human biomonitoring (HBM) data can provide insight into co-exposure patterns resulting from exposure to multiple chemicals from various sources and over time. Therefore, such data are particularly valuable for assessing potential risks from combined exposure to multiple chemicals. One way to interpret HBM data is establishing safe levels in blood or urine, called Biomonitoring Equivalents (BE) or HBM health based guidance values (HBM-HBGV). These can be derived by converting established external reference values, such as tolerable daily intake (TDI) values. HBM-HBGV or BE values are so far agreed only for a very limited number of chemicals. These values can be established using physiologically based kinetic (PBK) modelling, usually requiring substance specific models and the collection of many input parameters which are often not available or difficult to find in the literature. The aim of this study was to investigate the suitability and limitations of generic PBK models in deriving BE values for several compounds with a view to facilitating the use of HBM data in the assessment of chemical mixtures at a screening level. The focus was on testing the methodology with two generic models, the IndusChemFate tool and High-Throughput Toxicokinetics package, for two different classes of compounds, phenols and phthalates. HBM data on Danish children and on Norwegian mothers and children were used to evaluate the quality of the predictions and to illustrate, by means of a case study, the overall approach of applying PBK models to chemical classes with HBM data in the context of chemical mixture risk assessment. Application of PBK models provides a better understanding and interpretation of HBM data. However, the study shows that establishing safety threshold levels in urine is a difficult and complex task. The approach might be more straightforward for more persistent chemicals that are analysed as parent compounds in blood but high uncertainties have to be considered around simulated metabolite concentrations in urine. Refining the models may reduce these uncertainties and improve predictions. Based on the experience gained with this study, the performance of the models for other chemicals could be investigated, to improve the accuracy of the simulations.
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Affiliation(s)
- Julia Pletz
- European Commission, Joint Research Centre (JRC), Ispra, Italy; School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, UK(2)
| | - Samantha Blakeman
- European Commission, Joint Research Centre (JRC), Ispra, Italy; Oceansea Conservación del Medio Ambiente, Cádiz, Spain(2)
| | - Alicia Paini
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | | | - Andrew Worth
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | - Anna-Maria Andersson
- Department of Growth and Reproduction, Rigshospitalet, University of Copenhagen, Copenhagen 2100, Denmark
| | - Hanne Frederiksen
- Department of Growth and Reproduction, Rigshospitalet, University of Copenhagen, Copenhagen 2100, Denmark
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14
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Physiologically-based pharmacokinetic models for children: Starting to reach maturation? Pharmacol Ther 2020; 211:107541. [DOI: 10.1016/j.pharmthera.2020.107541] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 03/19/2020] [Indexed: 12/13/2022]
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Plasma DNA as a "liquid biopsy" incompletely complements tumor biopsy for identification of mutations in a case series of four patients with oligometastatic breast cancer. Breast Cancer Res Treat 2020; 182:665-677. [PMID: 32562118 DOI: 10.1007/s10549-020-05714-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 05/26/2020] [Indexed: 12/11/2022]
Abstract
PURPOSE Circulating tumor DNA in plasma may present a minimally invasive opportunity to identify tumor-derived mutations to inform selection of targeted therapies for individual patients, particularly in cases of oligometastatic disease where biopsy of multiple tumors is impractical. To assess the utility of plasma DNA as a "liquid biopsy" for precision oncology, we tested whether sequencing of plasma DNA is a reliable surrogate for sequencing of tumor DNA to identify targetable genetic alterations. METHODS Blood and biopsies of 1-3 tumors were obtained from 4 evaluable patients with advanced breast cancer. One patient provided samples from an additional 7 tumors post-mortem. DNA extracted from plasma, tumor tissues, and buffy coat of blood were used for probe-directed capture of all exons in 149 cancer-related genes and massively parallel sequencing. Somatic mutations in DNA from plasma and tumors were identified by comparison to buffy coat DNA. RESULTS Sequencing of plasma DNA identified 27.94 ± 11.81% (mean ± SD) of mutations detected in a tumor(s) from the same patient; such mutations tended to be present at high allelic frequency. The majority of mutations found in plasma DNA were not found in tumor samples. Mutations were also found in plasma that matched clinically undetectable tumors found post-mortem. CONCLUSIONS The incomplete overlap of genetic alteration profiles of plasma and tumors warrants caution in the sole reliance of plasma DNA to identify therapeutically targetable alterations in patients and indicates that analysis of plasma DNA complements, but does not replace, tumor DNA profiling. TRIAL REGISTRATION Subjects were prospectively enrolled in trial NCT01836640 (registered April 22, 2013).
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16
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Sarigiannis DΑ, Karakitsios SP, Handakas E, Gotti A. Development of a generic lifelong physiologically based biokinetic model for exposome studies. ENVIRONMENTAL RESEARCH 2020; 185:109307. [PMID: 32229354 DOI: 10.1016/j.envres.2020.109307] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 01/30/2020] [Accepted: 02/24/2020] [Indexed: 06/10/2023]
Abstract
The current study within the frame of the HEALS project aims at the development of a lifelong physiologically based biokinetic (PBBK) model for exposome studies. The aim was to deliver a comprehensive modelling framework for addressing a large chemical space. Towards this aim, the delivered model can easily adapt parameters from existing ad-hoc models or complete the missing compound specific parameters using advanced quantitative structure activity relationship (QSAR). All major human organs are included, as well as arterial, venous, and portal blood compartments. Xenobiotics and their metabolites are linked through the metabolizing tissues. This is mainly the liver, but also other sites of metabolism might be considered (intestine, brain, skin, placenta) based on the presence or not of the enzymes involved in the metabolism of the compound of interest. Each tissue is described by three mass balance equations for (a) red blood cells, (b) plasma and interstitial tissue and (c) cells respectively. The anthropometric parameters of the models are time dependent, so as to provide a lifetime internal dose assessment, as well as to describe the continuously changing physiology of the mother and the developing fetus. An additional component of flexibility is that the biokinetic processes that relate to metabolism are related with either Michaelis-Menten kinetics, as well as intrinsic clearance kinetics. The capability of the model is demonstrated in the assessment of internal exposure and the prediction of expected biomonitored levels in urine for three major compounds within the HEALS project, namely bisphenol A (BPA), Bis(2-ethylhexyl) phthalate (DEHP) and cadmium (Cd). The results indicated that the predicted urinary levels fit very well with the ones from human biomonitoring (HBM) studies; internal exposure to plasticizers is very low (in the range of ng/L), while internal exposure to Cd is in the range of μg/L.
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Affiliation(s)
- Dimosthenis Α Sarigiannis
- Aristotle University of Thessaloniki, Department of Chemical Engineering, Environmental Engineering Laboratory, University Campus, Thessaloniki, 54124, Greece; HERACLES Research Center on the Exposome and Health, Center for Interdisciplinary Research and Innovation, Balkan Center, Bldg. B, 10th km Thessaloniki-Thermi Road, 57001, Greece; School for Advanced Study (IUSS), Science, Technology and Society Department, Environmental Health Engineering, Piazza Della Vittoria 15, Pavia, 27100, Italy.
| | - Spyros P Karakitsios
- Aristotle University of Thessaloniki, Department of Chemical Engineering, Environmental Engineering Laboratory, University Campus, Thessaloniki, 54124, Greece; HERACLES Research Center on the Exposome and Health, Center for Interdisciplinary Research and Innovation, Balkan Center, Bldg. B, 10th km Thessaloniki-Thermi Road, 57001, Greece
| | - Evangelos Handakas
- Aristotle University of Thessaloniki, Department of Chemical Engineering, Environmental Engineering Laboratory, University Campus, Thessaloniki, 54124, Greece
| | - Alberto Gotti
- EUCENTRE, Via Adolfo Ferrata, 1, Pavia, 27100, Italy
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Critical assessment and integration of separate lines of evidence for risk assessment of chemical mixtures. Arch Toxicol 2019; 93:2741-2757. [PMID: 31520250 DOI: 10.1007/s00204-019-02547-x] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 08/14/2019] [Indexed: 12/17/2022]
Abstract
Humans are exposed to multiple chemicals on a daily basis instead of to just a single chemical, yet the majority of existing toxicity data comes from single-chemical exposure. Multiple factors must be considered such as the route, concentration, duration, and the timing of exposure when determining toxicity to the organism. The need for adequate model systems (in vivo, in vitro, in silico and mathematical) is paramount for better understanding of chemical mixture toxicity. Currently, shortcomings plague each model system as investigators struggle to find the appropriate balance of rigor, reproducibility and appropriateness in mixture toxicity studies. Significant questions exist when comparing single-to mixture-chemical toxicity concerning additivity, synergism, potentiation, or antagonism. Dose/concentration relevance is a major consideration and should be subthreshold for better accuracy in toxicity assessment. Previous work was limited by the technology and methodology of the time, but recent advances have resulted in significant progress in the study of mixture toxicology. Novel technologies have added insight to data obtained from in vivo studies for predictive toxicity testing. These include new in vitro models: omics-related tools, organs-on-a-chip and 3D cell culture, and in silico methods. Taken together, all these modern methodologies improve the understanding of the multiple toxicity pathways associated with adverse outcomes (e.g., adverse outcome pathways), thus allowing investigators to better predict risks linked to exposure to chemical mixtures. As technology and knowledge advance, our ability to harness and integrate separate streams of evidence regarding outcomes associated with chemical mixture exposure improves. As many national and international organizations are currently stressing, studies on chemical mixture toxicity are of primary importance.
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Visible-light-driven N2-g-C3N4 as a highly stable and efficient photocatalyst for bisphenol A and Cr(VI) removal in binary systems. Catal Today 2019. [DOI: 10.1016/j.cattod.2018.09.037] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Abstract
Abstract
Breastfeeding plays an essential role in the healthy development of a newborn, but human milk is obviously compromised by pollutants from our environment. The main contaminants of human milk with endocrine-disrupting compound (EDCs) have raised concern for public and environmental health. Bisphenol A (BPA), which can leach from plastics, are among the most well-studied. Since EDs are known to cross the mammary gland barrier and BPA may accumulate in the neonate, “BPA-free” products have been introduced to the market. However, recent studies have shown that alternative bisphenols (e.g. BPS, BPF) can be detected in breast milk, have ED activities and may have developmental effects similar to BPA.
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Bono R, Bellisario V, Tassinari R, Squillacioti G, Manetta T, Bugiani M, Migliore E, Piccioni P. Bisphenol A, Tobacco Smoke, and Age as Predictors of Oxidative Stress in Children and Adolescents. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16112025. [PMID: 31174388 PMCID: PMC6604009 DOI: 10.3390/ijerph16112025] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 06/04/2019] [Accepted: 06/05/2019] [Indexed: 12/30/2022]
Abstract
OBJECTIVES The purpose of this study was to investigate bisphenol A (BPA) and its role in the induction of oxidative stress and confirm the same for tobacco smoke. METHODS A total of 223 young, healthy students (7-19 years old) were recruited in Chivasso, Italy. A spot of urine of each subject was analyzed to quantify BPA, cotinine, and 15F2t-isoprostane. RESULTS BPA showed a slight increase of concentration proportional with increasing age, even though the 11-14 years age group had slightly lower results, inducing a V-shape. The same trend was observed for 15F2t-isoprostane and cotinine. The result of piecewise linear robust regression shows a break point of the effect of BPA on 15F2t-isoprostane at 6 ng/mg CREA (p < 0.001). At higher levels, 15F2t-isoprostane shows an exponential increase by more than threefold for each one-log unit of BPA. An increase of oxidative stress due to BPA was observed, but only from 6 ng/mg of CREA up. Passive tobacco smoke is also able to induce an increase in oxidative stress. CONCLUSION Prevention against BPA and passive tobacco smoke represents an important tool for promoting the highest health standard.
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Affiliation(s)
- Roberto Bono
- Department of Public Health and Pediatrics, University of Turin, 10126 Turin, Italy.
| | - Valeria Bellisario
- Department of Public Health and Pediatrics, University of Turin, 10126 Turin, Italy.
| | - Roberta Tassinari
- Department of Public Health and Pediatrics, University of Turin, 10126 Turin, Italy.
| | - Giulia Squillacioti
- Department of Public Health and Pediatrics, University of Turin, 10126 Turin, Italy.
| | - Tilde Manetta
- Department of Public Health and Pediatrics, University of Turin, 10126 Turin, Italy.
| | - Massimiliano Bugiani
- Consultant of OMP (observatory of professional diseases) of the Turin Court Prosecutor's Office, Turin 10100, Italy.
| | - Enrica Migliore
- Cancer Epidemiology, AOU Città della Salute e della Scienza di Torino, Turin 10126, Italy.
| | - Pavilio Piccioni
- Unit of Pneumology and Tisiology, National Health Service (ASL TO2), Torino 10100, Italy.
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Hoepner LA. Bisphenol a: A narrative review of prenatal exposure effects on adipogenesis and childhood obesity via peroxisome proliferator-activated receptor gamma. ENVIRONMENTAL RESEARCH 2019; 173:54-68. [PMID: 30897403 PMCID: PMC10637253 DOI: 10.1016/j.envres.2019.03.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 03/04/2019] [Accepted: 03/05/2019] [Indexed: 06/09/2023]
Abstract
There is significant evidence of globally ubiquitous prenatal exposures to bisphenol A (BPA). Childhood obesity as an epidemic has been a global concern for over a decade. Experimental models and epidemiological evidence suggest that BPA may act as an obesogen during adipogenesis. Results from stem cell models and birth cohort studies support the developmental origins of health and disease theory. While literature reviews have presented a variety of potential mechanisms of BPA action during adipogenesis, there remains no consensus. This review is the first to explore the proliferator-activated receptor gamma (PPARγ) mechanism in detail. This review will also examine the obesogenic effect of prenatal exposure to BPA during critical windows of vulnerability. Although vast experimental literature exists, there is limited epidemiological evidence to support the hypothesis for the obesogenic effect of BPA. The primary goal of this review is to provide researchers with a roadmap of existing research and suggestions for future directions for analyzing the relationship between prenatal BPA exposures and childhood obesity.
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Affiliation(s)
- Lori A Hoepner
- Department of Environmental and Occupational Health Sciences, Downstate Medical Center School of Public Health, State University of New York, Brooklyn, NY, USA; Columbia Center for Children's Environmental Health, Mailman School of Public Health, Columbia University, New York, NY, USA.
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Sarigiannis DA, Karakitsios S, Dominguez-Romero E, Papadaki K, Brochot C, Kumar V, Schuhmacher M, Sy M, Mielke H, Greiner M, Mengelers M, Scheringer M. Physiology-based toxicokinetic modelling in the frame of the European Human Biomonitoring Initiative. ENVIRONMENTAL RESEARCH 2019; 172:216-230. [PMID: 30818231 DOI: 10.1016/j.envres.2019.01.045] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 01/25/2019] [Accepted: 01/28/2019] [Indexed: 06/09/2023]
Abstract
Given the opportunities provided by internal dosimetry modelling in the interpretation of human biomonitoring (HBM) data, the assessment of the links between exposure to chemicals and observed HBM data can be effectively supported by PBTK modelling. This paper gives a comprehensive review of available human PBTK models for compounds selected as a priority by the European Human Biomonitoring Initiative (HBM4EU). We highlight their advantages and deficiencies and suggest steps for advanced internal dose modelling. The review of the available PBTK models highlighted the conceptual differences between older models compared to the ones developed recently, reflecting commensurate differences in research questions. Due to the lack of coordinated strategies for deriving useful biomonitoring data for toxicokinetic properties, significant problems in model parameterisation still remain; these are further increased by the lack of human toxicokinetic data due to ethics issues. Finally, questions arise as well as to the extent they are really representative of interindividual variability. QSARs for toxicokinetic properties is a complementary approach for PBTK model parameterisation, especially for data poor chemicals. This approach could be expanded to model chemico-biological interactions such as intestinal absorption and renal clearance; this could serve the development of more complex generic PBTK models that could be applied to newly derived chemicals. Another gap identified is the framework for mixture interaction terms among compounds that could eventually interact in metabolism. From the review it was concluded that efforts should be shifted toward the development of generic multi-compartmental and multi-route models, supported by targeted biomonitoring coupled with parameterisation by both QSAR approach and experimental (in-vivo and in-vitro) data for newly developed and data poor compounds.
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Affiliation(s)
- Dimosthenis A Sarigiannis
- Aristotle University of Thessaloniki, Department of Chemical Engineering, Environmental Engineering Laboratory, University Campus, Thessaloniki 54124, Greece; HERACLES Research Center on the Exposome and Health, Center for Interdisciplinary Research and Innovation, Balkan Center, Bldg. B, 10th km Thessaloniki-Thermi Road, 57001, Greece.
| | - Spyros Karakitsios
- Aristotle University of Thessaloniki, Department of Chemical Engineering, Environmental Engineering Laboratory, University Campus, Thessaloniki 54124, Greece; HERACLES Research Center on the Exposome and Health, Center for Interdisciplinary Research and Innovation, Balkan Center, Bldg. B, 10th km Thessaloniki-Thermi Road, 57001, Greece
| | | | - Krystalia Papadaki
- Aristotle University of Thessaloniki, Department of Chemical Engineering, Environmental Engineering Laboratory, University Campus, Thessaloniki 54124, Greece
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Xu X, Fan S, Guo Y, Tan R, Zhang J, Zhang W, Pan BX, Kato N. The effects of perinatal bisphenol A exposure on thyroid hormone homeostasis and glucose metabolism in the prefrontal cortex and hippocampus of rats. Brain Behav 2019; 9:e01225. [PMID: 30761779 PMCID: PMC6422808 DOI: 10.1002/brb3.1225] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 10/25/2018] [Accepted: 12/09/2018] [Indexed: 12/14/2022] Open
Abstract
INTRODUCTION Bisphenol A (BPA) is an endocrine disruptor widely used to manufacture consumer goods. Although the thyroid hormone (TH) disrupting potential of BPA has been thought to be responsible for the neuropsychiatric deficits in the animals that experienced perinatal BPA exposure, the TH availability change at the level of specific brain structures has not been subject to systematic investigation. METHODS In the present study the impacts of perinatal BPA exposure (0.1 mg/L in drinking water) spanning gestation and lactation on TH homeostasis in the prefrontal cortex (PFC) and hippocampus were assessed in male Sprague-Dawley rats at postnatal day 21 (PND21) and PND90. As TH regulates brain glucose metabolism at multiple levels,the effects of BPA treatment on glucose metabolism in the brain tissues were also assessed in adult rats. RESULTS The results showed heterogeneous changes in TH concentration induced by BPA between serum and brain tissues, additionally, in the BPA-treated pups, up-regulated expression of the TH transporter monocarboxylate 8 mRNA at PND21 and increased type 3 iodothyronine deiodinase mRNA expressions at PND21 and PND90 were observed. Meanwhile, decreased glucose metabolism was seen in the PFC and hippocampus, while deficits in locomotor activity, spatial memory and social behaviors occurred in BPA-treated groups. CONCLUSION These data support the concept that the developing brain possesses potent mechanisms to compensate for a small reduction in serum TH, such as serum hypothyrodism induced by BPA exposure, however, the long-term negative effect of BPA treatment on TH homeostasis and glucose metabolism may be attributable to neuropsychiatric deficits after mature.
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Affiliation(s)
- Xiaobin Xu
- Laboratory of Fear and Anxiety Disorders, Institute of Life Science, Nanchang University, Nanchang, China
| | - Shijun Fan
- Laboratory of Fear and Anxiety Disorders, Institute of Life Science, Nanchang University, Nanchang, China
| | - Yuanqiao Guo
- School of Statistics, University of International Business and Economics, Beijing, China
| | - Ruei Tan
- Tan Clinic, Tokyo, Kanagawa, Japan
| | - Junyu Zhang
- Laboratory of Fear and Anxiety Disorders, Institute of Life Science, Nanchang University, Nanchang, China
| | - Wenhua Zhang
- Laboratory of Fear and Anxiety Disorders, Institute of Life Science, Nanchang University, Nanchang, China
| | - Bing-Xing Pan
- Laboratory of Fear and Anxiety Disorders, Institute of Life Science, Nanchang University, Nanchang, China
| | - Nobumasa Kato
- Medical Institute of Developmental Disorders Research, Showa University, Tokyo, Japan
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Sarigiannis DA, Tratnik JS, Mazej D, Kosjek T, Heath E, Horvat M, Anesti O, Karakitsios SP. Risk characterization of bisphenol-A in the Slovenian population starting from human biomonitoring data. ENVIRONMENTAL RESEARCH 2019; 170:293-300. [PMID: 30605834 DOI: 10.1016/j.envres.2018.12.056] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 12/20/2018] [Accepted: 12/21/2018] [Indexed: 06/09/2023]
Abstract
The current study aims to characterize exposure and risk associated to bisphenol-A (BPA) exposure in Slovenia, starting from biomonitoring data. Based on the urinary data, daily intake for the individuals was back-calculated using a physiology based biokinetic (PBBK) model properly parameterized for BPA, coupled with an exposure reconstruction algorithm. Re-running the PBBK model in forward mode allowed the estimation of biologically effective dose (free plasma BPA) and the respective daily area under the curve (AUC). Finally, risk characterization ratio was derived using both external and internal dose metrics. The urinary BPA levels were found low, with GM of 0.79, 1.51 and 0.20 μg/g creatinine for mothers, children and fathers respectively, similar to the levels of other European countries. Based on the above and accounting for the dynamics of exposure and biokinetics, daily intake was estimated, median exposure levels have been estimated equal to 0.019, 0.035 and 0.005 μg/kg_bw/d for mothers, fathers and children respectively. The highest estimated intake level was found in a child, equal to 0.87 μg/kg_bw/d, while the maximum intake for mothers and fathers were 0.7 and 0.8 μg/kg_bw/d respectively. The respective RCR levels using the EFSA t-TDI of 4 μg/kg_bw/d were 2 magnitudes of order lower below 1, independently of the selected method. It has to be noted that had daily intake been estimated solely based on the urinary concentrations mass balance, the estimated intake would be lower, as a result of the oversimplification on exposure and elimination time dynamics. This highlights the importance for using PBBK modelling based exposure reconstruction schemes for rapidly metabolized and excreted compounds such as BPA, as well as the study design of efficient sampling for rapidly metabolized compounds.
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Affiliation(s)
- Dimosthenis A Sarigiannis
- Aristotle University of Thessaloniki, Department of Chemical Engineering, Environmental Engineering Laboratory, University Campus, Thessaloniki 54124, Greece; HERACLES Research Center on the Exposome and Health, Center for Interdisciplinary Research and Innovation, Aristotle University of Thessaloniki, Balkan Center, Bldg. B, 10th km Thessaloniki-Thermi Road, 57001, Greece; School for Advanced Study (IUSS), Piazza della Vittoria 15, Pavia 27100, Italy.
| | - Janja Snoj Tratnik
- Department of Environmental Sciences, Josef Stefan Institute, 1000 Ljubljana, Slovenia; Jožef Stefan' International Postgraduate School, Ljubljana, Slovenia
| | - Darja Mazej
- Department of Environmental Sciences, Josef Stefan Institute, 1000 Ljubljana, Slovenia
| | - Tina Kosjek
- Department of Environmental Sciences, Josef Stefan Institute, 1000 Ljubljana, Slovenia; Jožef Stefan' International Postgraduate School, Ljubljana, Slovenia
| | - Ester Heath
- Department of Environmental Sciences, Josef Stefan Institute, 1000 Ljubljana, Slovenia; Jožef Stefan' International Postgraduate School, Ljubljana, Slovenia
| | - Milena Horvat
- Department of Environmental Sciences, Josef Stefan Institute, 1000 Ljubljana, Slovenia; Jožef Stefan' International Postgraduate School, Ljubljana, Slovenia
| | - Ourania Anesti
- HERACLES Research Center on the Exposome and Health, Center for Interdisciplinary Research and Innovation, Aristotle University of Thessaloniki, Balkan Center, Bldg. B, 10th km Thessaloniki-Thermi Road, 57001, Greece
| | - Spyros P Karakitsios
- Aristotle University of Thessaloniki, Department of Chemical Engineering, Environmental Engineering Laboratory, University Campus, Thessaloniki 54124, Greece; HERACLES Research Center on the Exposome and Health, Center for Interdisciplinary Research and Innovation, Aristotle University of Thessaloniki, Balkan Center, Bldg. B, 10th km Thessaloniki-Thermi Road, 57001, Greece; School for Advanced Study (IUSS), Piazza della Vittoria 15, Pavia 27100, Italy
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Tan YM, Worley RR, Leonard JA, Fisher JW. Challenges Associated With Applying Physiologically Based Pharmacokinetic Modeling for Public Health Decision-Making. Toxicol Sci 2019; 162:341-348. [PMID: 29385573 DOI: 10.1093/toxsci/kfy010] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The development and application of physiologically based pharmacokinetic (PBPK) models in chemical toxicology have grown steadily since their emergence in the 1980s. However, critical evaluation of PBPK models to support public health decision-making across federal agencies has thus far occurred for only a few environmental chemicals. In order to encourage decision-makers to embrace the critical role of PBPK modeling in risk assessment, several important challenges require immediate attention from the modeling community. The objective of this contemporary review is to highlight 3 of these challenges, including: (1) difficulties in recruiting peer reviewers with appropriate modeling expertise and experience; (2) lack of confidence in PBPK models for which no tissue/plasma concentration data exist for model evaluation; and (3) lack of transferability across modeling platforms. Several recommendations for addressing these 3 issues are provided to initiate dialog among members of the PBPK modeling community, as these issues must be overcome for the field of PBPK modeling to advance and for PBPK models to be more routinely applied in support of public health decision-making.
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Affiliation(s)
- Yu-Mei Tan
- National Exposure Research Laboratory, United States Environmental Protection Agency, Research Triangle Park, North Carolina 27709
| | - Rachel R Worley
- Agency for Toxic Substances and Disease Registry, Atlanta, Georgia 30341
| | - Jeremy A Leonard
- Oak Ridge Institute for Science and Education, Oak Ridge, Tennessee 37830
| | - Jeffrey W Fisher
- National Center for Toxicological Research, United States Food and Drug Administration, Jefferson, Arizona 72079
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Kumar S, Nehra M, Dilbaghi N, Marrazza G, Hassan AA, Kim KH. Nano-based smart pesticide formulations: Emerging opportunities for agriculture. J Control Release 2019; 294:131-153. [PMID: 30552953 DOI: 10.1016/j.jconrel.2018.12.012] [Citation(s) in RCA: 227] [Impact Index Per Article: 45.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 12/08/2018] [Accepted: 12/10/2018] [Indexed: 12/11/2022]
Abstract
The incorporation of nanotechnology as a means for nanopesticides is in the early stage of development. The main idea behind this incorporation is to lower the indiscriminate use of conventional pesticides to be in line with safe environmental applications. Nanoencapsulated pesticides can provide controlled release kinetics, while efficiently enhancing permeability, stability, and solubility. Nanoencapsulation can enhance the pest-control efficiency over extended durations by preventing the premature degradation of active ingredients (AIs) under harsh environmental conditions. This review is thus organized to critically assess the significant role of nanotechnology for encapsulation of AIs for pesticides. The smart delivery of pesticides is essential to reduce the dosage of AIs with enhanced efficacy and to overcome pesticide loss (e.g., due to leaching and evaporation). The future trends of pesticide nanoformulations including nanomaterials as AIs and nanoemulsions of biopesticides are also explored. This review should thus offer a valuable guide for establishing regulatory frameworks related to field applications of these nano-based pesticides in the near future.
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Affiliation(s)
- Sandeep Kumar
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar, Haryana 125001, India; Department of Civil Engineering, College of Engineering, University of Nebraska Lincoln, P.O. Box 886105, Lincoln, NE 68588-6105, United States.
| | - Monika Nehra
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar, Haryana 125001, India; Department of Electronics and Communication Engineering, Guru Jambheshwar University of Science and Technology, Hisar, Haryana 125001, India
| | - Neeraj Dilbaghi
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar, Haryana 125001, India
| | - Giovanna Marrazza
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy; Istituto Nazionale Biostrutture e Biosistemi (INBB), Unit of Florence, Viale delle Medaglie d'Oro 305, 00136, Roma, Italy
| | - Ashraf Aly Hassan
- Department of Civil Engineering, College of Engineering, University of Nebraska Lincoln, P.O. Box 886105, Lincoln, NE 68588-6105, United States
| | - Ki-Hyun Kim
- Department of Civil & Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea.
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Advancing Chemical Risk Assessment through Human Physiology-Based Biochemical Process Modeling. FLUIDS 2019. [DOI: 10.3390/fluids4010004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Physiology-Based BioKinetic (PBBK) models are of increasing interest in modern risk assessment, providing quantitative information regarding the absorption, metabolism, distribution, and excretion (ADME). They focus on the estimation of the effective dose at target sites, aiming at the identification of xenobiotic levels that are able to result in perturbations to the biological pathway that are potentially associated with adverse outcomes. The current study aims at the development of a lifetime PBBK model that covers a large chemical space, coupled with a framework for human biomonitoring (HBM) data assimilation. The methodology developed herein was demonstrated in the case of bisphenol A (BPA), where exposure analysis was based on European HBM data. Based on our calculations, it was found that current exposure levels in Europe are below the temporary Tolerable Daily Intake (t-TDI) of 4 μg/kg_bw/day proposed by the European Food Safety Authority (EFSA). Taking into account age-dependent bioavailability differences, internal exposure was estimated and compared with the biologically effective dose (BED) resulting from translating the EFSA temporary total daily intake (t-TDI) into equivalent internal dose and an alternative internal exposure reference value, namely biological pathway altering dose (BPAD); the use of such a refined exposure metric, showed that environmentally relevant exposure levels are below the concentrations associated with the activation of biological pathways relevant to toxicity based on High Throughput Screening (HTS) in vitro studies.
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Snoj Tratnik J, Kosjek T, Heath E, Mazej D, Ćehić S, Karakitsios SP, Sarigiannis DA, Horvat M. Urinary bisphenol A in children, mothers and fathers from Slovenia: Overall results and determinants of exposure. ENVIRONMENTAL RESEARCH 2019; 168:32-40. [PMID: 30253314 DOI: 10.1016/j.envres.2018.09.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Revised: 08/22/2018] [Accepted: 09/05/2018] [Indexed: 06/08/2023]
Abstract
In the present study, urinary bisphenol A (BPA) levels were reported for the first time in the Slovenian general population and were evaluated with regard to dietary and non-dietary exposure sources, and compared according to age, gender and area of residence. First morning urine was collected from children (6-11 years), their mothers (30-52 years) and fathers (30-53 years), living in urban and rural areas of Slovenia. Besides basic questionnaire data on general population characteristics, socio-economic status and dietary habits, BPA-specific data was also collected, including consumption of food and beverages from plastic and canned containers, presence of white dental fillings, the use of specific consumer products and hormonal treatments. Urine samples were analysed for both free and conjugated BPA using GC-MS/MS. The urinary levels of total BPA in children, mothers and fathers were low, with geometric means of 1.51, 0.79, and 0.20 μg/g creatinine, respectively. The levels were comparable with the levels reported for other European countries and were all below the current health-based guidance values. In line with large-scale surveys, the data revealed age-dependant BPA urinary levels, with the highest levels in the youngest age group. In mothers, urinary levels of BPA were determined by hormonal interactions more than dietary sources, while a positive association between urinary BPA and diet was apparent in children (canned food/drink and food from plastic material) and fathers (canned food/drink). The study clearly shows that physiological and behavioural differences account for differences in levels of urinary BPA among study groups, a finding that sets the priorities for future research.
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Affiliation(s)
- Janja Snoj Tratnik
- Department of Environmental Sciences, Jožef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia; 'Jožef Stefan' International Postgraduate School, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
| | - Tina Kosjek
- Department of Environmental Sciences, Jožef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia; 'Jožef Stefan' International Postgraduate School, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
| | - Ester Heath
- Department of Environmental Sciences, Jožef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia; 'Jožef Stefan' International Postgraduate School, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
| | - Darja Mazej
- Department of Environmental Sciences, Jožef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
| | - Sulejma Ćehić
- Department of Environmental Sciences, Jožef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
| | - Spyros P Karakitsios
- Aristotle University of Thessaloniki, Department of Chemical Engineering, Environmental Engineering Laboratory, University Campus, Thessaloniki 54124, Greece; HERACLES Health and Exposome Research Centre, Centre for Interdisciplinary Research and Innovation, Balkan Centre, Bldg. B, 10th km Thessaloniki-Thermi Road, 57001, Greece; School for Advanced Study (IUSS), Piazza della Vittoria 15, Pavia 27100, Italy
| | - Dimosthenis A Sarigiannis
- Aristotle University of Thessaloniki, Department of Chemical Engineering, Environmental Engineering Laboratory, University Campus, Thessaloniki 54124, Greece; HERACLES Health and Exposome Research Centre, Centre for Interdisciplinary Research and Innovation, Balkan Centre, Bldg. B, 10th km Thessaloniki-Thermi Road, 57001, Greece; School for Advanced Study (IUSS), Piazza della Vittoria 15, Pavia 27100, Italy
| | - Milena Horvat
- Department of Environmental Sciences, Jožef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia; 'Jožef Stefan' International Postgraduate School, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
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Migliaccio M, Chioccarelli T, Ambrosino C, Suglia A, Manfrevola F, Carnevali O, Fasano S, Pierantoni R, Cobellis G. Characterization of Follicular Atresia Responsive to BPA in Zebrafish by Morphometric Analysis of Follicular Stage Progression. Int J Endocrinol 2018; 2018:4298195. [PMID: 30675159 PMCID: PMC6323489 DOI: 10.1155/2018/4298195] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 09/18/2018] [Accepted: 10/29/2018] [Indexed: 12/22/2022] Open
Abstract
Bisphenol A is an industrial chemical compound, pervasively polluting the environment and diet, classified as an endocrine disruptor because of its interference effects on the endocrine system. In zebrafish, BPA exposure induces follicular atresia. To acquire knowledge on this atretic effect, using a qualitative and quantitative histomorphological approach, we studied zebrafish ovarian follicular stage development in response to low BPA concentrations. Results show that BPA interferes with follicular progression by affecting the previtellogenic and vitellogenic phases. In particular, BPA exposure (i) increases follicular recruitment by acting on primary stage follicles, (ii) forces the follicular transition from stage III to stage IV producing enlarged stage IV follicles, and (iii) induces atresia by producing atretic follicles that are peculiarly enlarged (i.e., big atretic follicles). We suggest that BPA induces atresia by the primary effect on recruitment of stage I follicles. This forces follicular progression and produces stage IV follicles that are peculiarly enlarged that undertake the atretic development.
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Affiliation(s)
- M. Migliaccio
- Dipartimento di Medicina Sperimentale, Sez. Bottazzi, Università degli Studi della Campania “L. Vanvitelli”, Via Costantinopoli 16, 80138 Napoli, Italy
| | - T. Chioccarelli
- Dipartimento di Medicina Sperimentale, Sez. Bottazzi, Università degli Studi della Campania “L. Vanvitelli”, Via Costantinopoli 16, 80138 Napoli, Italy
| | - C. Ambrosino
- Dipartimento di Scienze e Tecnologie, Università del Sannio, Via Port'Arsa 11, 82100 Benevento, Italy
| | - A. Suglia
- Dipartimento di Medicina Sperimentale, Sez. Bottazzi, Università degli Studi della Campania “L. Vanvitelli”, Via Costantinopoli 16, 80138 Napoli, Italy
| | - F. Manfrevola
- Dipartimento di Medicina Sperimentale, Sez. Bottazzi, Università degli Studi della Campania “L. Vanvitelli”, Via Costantinopoli 16, 80138 Napoli, Italy
| | - O. Carnevali
- Dipartimento Scienze della Vita e dell'Ambiente, Università Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, Italy
| | - S. Fasano
- Dipartimento di Medicina Sperimentale, Sez. Bottazzi, Università degli Studi della Campania “L. Vanvitelli”, Via Costantinopoli 16, 80138 Napoli, Italy
| | - R. Pierantoni
- Dipartimento di Medicina Sperimentale, Sez. Bottazzi, Università degli Studi della Campania “L. Vanvitelli”, Via Costantinopoli 16, 80138 Napoli, Italy
| | - G. Cobellis
- Dipartimento di Medicina Sperimentale, Sez. Bottazzi, Università degli Studi della Campania “L. Vanvitelli”, Via Costantinopoli 16, 80138 Napoli, Italy
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Ali M, Jaghbir M, Salam M, Al-Kadamany G, Damsees R, Al-Rawashdeh N. Testing baby bottles for the presence of residual and migrated bisphenol A. ENVIRONMENTAL MONITORING AND ASSESSMENT 2018; 191:7. [PMID: 30535565 DOI: 10.1007/s10661-018-7126-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 11/23/2018] [Indexed: 05/10/2023]
Abstract
Plastic made with bisphenol A (BPA) produces trans-generational changes in genes and behavior. It has been positively linked to obesity and thyroid dysfunction. This study aimed to detect the presence of BPA in polycarbonate plastic (PC) baby bottles. Fifteen PC baby bottles with a clear indication of BPA free/safe/clear were randomly selected. High-performance liquid chromatography (HPLC) tests were used to detect residual or migrating BPA post three stress tests. An estimated intake of BPA among children was calculated then compared to the universal tolerable daily intake (TDI). Around 27% of bottles had detectable amounts of residual BPA in the first test, 100% released migrating BPA in the second and third tests. A significant positive linear trend in migrated BPA levels was observed over the three consecutive tests P < 0.0001. Approximately 73.5% of the accounted variability in BPA levels was due to these stress tests P < 0.0001. Babies from 0 to 3 months are expected to consume 0.8 to 23.8% of their safe TDI of BPA just by using plastic bottles between the first time of usage and after 60 washes (estimated 15 to 20 days of usage). Although no bottles have shown a risk of BPA intake exceeding TDI, the combined use of BPA bottles with other plastic utensils might result in reaching it. It is advisable to refrain from using BPA-containing plastic bottles or be cautious about usage duration. Manufacturers should indicate a clear margin of usage duration. Four baby bottle brands showed the least BPA leaking (Baby King, Camera, Sweet Baby, and Farlin).
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Affiliation(s)
- Manal Ali
- Department of Family and Community Medicine, Faculty of Medicine, University of Jordan, Amman, Jordan
| | - Madi Jaghbir
- Department of Family and Community Medicine, Faculty of Medicine, University of Jordan, Amman, Jordan
| | - Mahmoud Salam
- King Abdullah International Medical Research Center, King Saud bin Abdulaziz University for Health Sciences, Ministry of National Guard Health Affairs, PO Box 22490 Mail Code 1515, Riyadh, 11426, Kingdom of Saudi Arabia
| | - Ghada Al-Kadamany
- King Abdullah International Medical Research Center, King Saud bin Abdulaziz University for Health Sciences, Ministry of National Guard Health Affairs, PO Box 22490 Mail Code 1515, Riyadh, 11426, Kingdom of Saudi Arabia
| | - Rana Damsees
- King Abdullah International Medical Research Center, King Saud bin Abdulaziz University for Health Sciences, Ministry of National Guard Health Affairs, PO Box 22490 Mail Code 1515, Riyadh, 11426, Kingdom of Saudi Arabia
- The Office of Scientific Affairs and Research, King Hussein Cancer Center, Amman, Jordan
| | - Nedal Al-Rawashdeh
- King Abdullah International Medical Research Center, King Saud bin Abdulaziz University for Health Sciences, Ministry of National Guard Health Affairs, PO Box 22490 Mail Code 1515, Riyadh, 11426, Kingdom of Saudi Arabia.
- The Office of Scientific Affairs and Research, King Hussein Cancer Center, Amman, Jordan.
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Guimarães M, Statelova M, Holm R, Reppas C, Symilllides M, Vertzoni M, Fotaki N. Biopharmaceutical considerations in paediatrics with a view to the evaluation of orally administered drug products - a PEARRL review. ACTA ACUST UNITED AC 2018; 71:603-642. [PMID: 29971768 DOI: 10.1111/jphp.12955] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2018] [Accepted: 05/28/2018] [Indexed: 12/25/2022]
Abstract
OBJECTIVES In this review, the current biopharmaceutical approaches for evaluation of oral formulation performance in paediatrics are discussed. KEY FINDINGS The paediatric gastrointestinal (GI) tract undergoes numerous morphological and physiological changes throughout its development and growth. Some physiological parameters are yet to be investigated, limiting the use of the existing in vitro biopharmaceutical tools to predict the in vivo performance of paediatric formulations. Meals and frequencies of their administration evolve during childhood and affect oral drug absorption. Furthermore, the establishment of a paediatric Biopharmaceutics Classification System (pBCS), based on the adult Biopharmaceutics Classification System (BCS), requires criteria adjustments. The usefulness of computational simulation and modeling for extrapolation of adult data to paediatrics has been confirmed as a tool for predicting drug formulation performance. Despite the great number of successful physiologically based pharmacokinetic models to simulate drug disposition, the simulation of drug absorption from the GI tract is a complicating issue in paediatric populations. SUMMARY The biopharmaceutics tools for investigation of oral drug absorption in paediatrics need further development, refinement and validation. A combination of in vitro and in silico methods could compensate for the uncertainties accompanying each method on its own.
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Affiliation(s)
- Mariana Guimarães
- Department of Pharmacy and Pharmacology, University of Bath, Bath, UK
| | - Marina Statelova
- Department of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece
| | - René Holm
- Drug Product Development, Janssen Research and Development, Johnson & Johnson, Beerse, Belgium
| | - Christos Reppas
- Department of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece
| | - Moira Symilllides
- Department of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece
| | - Maria Vertzoni
- Department of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece
| | - Nikoletta Fotaki
- Department of Pharmacy and Pharmacology, University of Bath, Bath, UK
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Sharma RP, Schuhmacher M, Kumar V. The development of a pregnancy PBPK Model for Bisphenol A and its evaluation with the available biomonitoring data. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 624:55-68. [PMID: 29247905 DOI: 10.1016/j.scitotenv.2017.12.023] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 12/03/2017] [Accepted: 12/03/2017] [Indexed: 05/20/2023]
Abstract
Recent studies suggest universal fetal exposure to Bisphenol A (BPA) and its association with the adverse birth outcomes. Estimation of the fetal plasma BPA concentration from the maternal plasma BPA would be highly useful to predict its associated risk to this specific population. The objective of current work is to develop a pregnancy-physiologically based pharmacokinetic (P-PBPK) model to predict the toxicokinetic profile of BPA in the fetus during gestational growth, and to evaluate the developed model using biomonitoring data obtained from different pregnancy cohort studies. To achieve this objective, first, the adult PBPK model was developed and validated with the human BPA toxicokinetic data. This validated human PBPK model was extended to develop a P-PBPK model, which included the physiological changes during pregnancy and the fetus sub-model. The developed model would be able to predict the BPA pharmacokinetics (PKs) in both mother and fetus. Transplacental BPA kinetics parameters for this study were taken from the previous pregnant mice study. Both oral and dermal exposure routes were included into the model to simulate total BPA internal exposure. The impact of conjugation and deconjugation of the BPA and its metabolites on fetal PKs was investigated. The developed P-PBPK model was evaluated against the observed BPA concentrations in cord blood, fetus liver and amniotic fluid considering maternal blood concentration as an exposure source. A range of maternal exposure dose for the oral and dermal routes was estimated, so that simulation concentration matched the observed highest and lowest mother plasma concentration in different cohorts' studies. The developed model could be used to address the concerns regarding possible adverse health effects in the fetus being exposed to BPA and might be useful in identifying critical windows of exposure during pregnancy.
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Affiliation(s)
- Raju Prasad Sharma
- Center of Environmental Food and Toxicological Technology (TecnATox), Departament d'Enginyeria Química, Universitat Rovira i Virgili, Tarragona, Catalonia, Spain
| | - Marta Schuhmacher
- Center of Environmental Food and Toxicological Technology (TecnATox), Departament d'Enginyeria Química, Universitat Rovira i Virgili, Tarragona, Catalonia, Spain
| | - Vikas Kumar
- Center of Environmental Food and Toxicological Technology (TecnATox), Departament d'Enginyeria Química, Universitat Rovira i Virgili, Tarragona, Catalonia, Spain.
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Maharaj AR, Gonzalez D, Cohen-Wolkowiez M, Hornik CP, Edginton AN. Improving Pediatric Protein Binding Estimates: An Evaluation of α1-Acid Glycoprotein Maturation in Healthy and Infected Subjects. Clin Pharmacokinet 2018; 57:577-589. [PMID: 28779462 PMCID: PMC5797516 DOI: 10.1007/s40262-017-0576-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
BACKGROUND Differences in plasma protein levels observed between children and adults can alter the extent of xenobiotic binding in plasma, resulting in divergent patterns of exposure. OBJECTIVE This study aims to quantify the ontogeny of α1-acid glycoprotein in both healthy and infected subjects. METHODS Data pertaining to α1-acid glycoprotein from healthy subjects were compiled over 26 different publications. For subjects diagnosed or suspected of infection, α1-acid glycoprotein levels were obtained from 214 individuals acquired over three clinical investigations. The analysis evaluated the use of linear, power, exponential, log-linear, and sigmoid E max models to describe the ontogeny of α1-acid glycoprotein. Utility of the derived ontogeny equation for estimation of pediatric fraction unbound was evaluated using average-fold error and absolute average-fold error as measures of bias and precision, respectively. A comparison to fraction unbound estimates derived using a previously proposed linear equation was also instituted. RESULTS The sigmoid E max model provided the comparatively best depiction of α1-acid glycoprotein ontogeny in both healthy and infected subjects. Despite median α1-acid glycoprotein levels in infected subjects being more than two-fold greater than those observed in healthy subjects, a similar ontogeny pattern was observed when levels were normalized toward adult levels. For estimation of pediatric fraction unbound, the α1-acid glycoprotein ontogeny equation derived from this work (average fold error 0.99; absolute average fold error 1.24) provided a superior predictive performance in comparison to the previous equation (average fold error 0.74; absolute average fold error 1.45). CONCLUSION The current investigation depicts a proficient modality for estimation of protein binding in pediatrics and will, therefore, aid in reducing uncertainty associated with pediatric pharmacokinetic predictions.
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Affiliation(s)
- Anil R Maharaj
- School of Pharmacy, University of Waterloo, 10A Victoria St. S, Kitchener, ON, Canada
| | - Daniel Gonzalez
- Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Michael Cohen-Wolkowiez
- Department of Pediatrics, Duke University School of Medicine, Durham, NC, USA
- Duke Clinical Research Institute, Duke University School of Medicine, Durham, NC, USA
| | - Christoph P Hornik
- Department of Pediatrics, Duke University School of Medicine, Durham, NC, USA
- Duke Clinical Research Institute, Duke University School of Medicine, Durham, NC, USA
| | - Andrea N Edginton
- School of Pharmacy, University of Waterloo, 10A Victoria St. S, Kitchener, ON, Canada.
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Johnson T, Bonner J, Tucker G, Turner D, Jamei M. Development and applications of a physiologically-based model of paediatric oral drug absorption. Eur J Pharm Sci 2018; 115:57-67. [DOI: 10.1016/j.ejps.2018.01.009] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 12/18/2017] [Accepted: 01/03/2018] [Indexed: 11/30/2022]
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Fernandez MO, Bourguignon NS, Arocena P, Rosa M, Libertun C, Lux-Lantos V. Neonatal exposure to bisphenol A alters the hypothalamic-pituitary-thyroid axis in female rats. Toxicol Lett 2018; 285:81-86. [DOI: 10.1016/j.toxlet.2017.12.029] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 12/14/2017] [Accepted: 12/31/2017] [Indexed: 11/28/2022]
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Cuomo D, Porreca I, Cobellis G, Tarallo R, Nassa G, Falco G, Nardone A, Rizzo F, Mallardo M, Ambrosino C. Carcinogenic risk and Bisphenol A exposure: A focus on molecular aspects in endoderm derived glands. Mol Cell Endocrinol 2017; 457:20-34. [PMID: 28111205 DOI: 10.1016/j.mce.2017.01.027] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 01/16/2017] [Accepted: 01/17/2017] [Indexed: 02/07/2023]
Abstract
Epidemiological and experimental evidence associates the exposure to Bisphenol A with the increase of cancer risk in several organs, including prostate. BPA targets different pathways involved in carcinogenicity including the Nuclear Receptors (i.e. estrogen and androgen receptors), stress regulated proteins and, finally, epigenetic changes. Here, we analyse BPA-dependent carcinogenesis in endoderm-derived glands, thyroid, liver, pancreas and prostate focusing on cell signalling, DNA damage repair pathways and epigenetic modifications. Mainly, we gather molecular data evidencing harmful effects at doses relevant for human risk (low-doses). Since few molecular data are available, above all for the pancreas, we analysed transcriptomic data generated in our laboratory to suggest possible mechanisms of BPA carcinogenicity in endoderm-derived glands, discussing the role of nuclear receptors and stress/NF-kB pathways. We evidence that an in vitro toxicogenomic approach might suggest mechanisms of toxicity applicable to cells having the same developmental origin. Although we cannot draw firm conclusions, published data summarized in this review suggest that exposure to BPA, primarily during the developmental stages, represents a risk for carcinogenesis of endoderm-derived glands.
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Affiliation(s)
- Danila Cuomo
- IRGS, Biogem, Via Camporeale, 83031 Ariano Irpino, Avellino, Italy; Department of Science and Technology, University of Sannio, via Port'Arsa 11, 82100 Benevento, Italy
| | | | - Gilda Cobellis
- Department of Experimental Medicine, Sez. Bozzatti, II University of Naples, 80138 Napoli, Italy
| | - Roberta Tarallo
- Laboratory of Molecular Medicine and Genomics, Department of Medicine, Surgery and Dentistry "Schola Medica Salernitana", University of Salerno, 84081 Baronissi, SA, Italy
| | - Giovanni Nassa
- Laboratory of Molecular Medicine and Genomics, Department of Medicine, Surgery and Dentistry "Schola Medica Salernitana", University of Salerno, 84081 Baronissi, SA, Italy; Genomix4Life srl, Department of Medicine, Surgery and Dentistry "Schola Medica Salernitana", University of Salerno, Baronissi, SA, Italy
| | - Geppino Falco
- Department of Biology, University of Naples "Federico II", Napoli, Italy
| | - Antonio Nardone
- Department of Public Health, University of Naples "Federico II", Napoli, Italy
| | - Francesca Rizzo
- Laboratory of Molecular Medicine and Genomics, Department of Medicine, Surgery and Dentistry "Schola Medica Salernitana", University of Salerno, 84081 Baronissi, SA, Italy
| | - Massimo Mallardo
- Molecular Medicine and Medical Biotechnologies, University of Naples "Federico II", Napoli, Italy
| | - Concetta Ambrosino
- Department of Science and Technology, University of Sannio, via Port'Arsa 11, 82100 Benevento, Italy.
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Gauderat G, Picard-Hagen N, Toutain PL, Servien R, Viguié C, Puel S, Lacroix MZ, Corbel T, Bousquet-Melou A, Gayrard V. Prediction of human prenatal exposure to bisphenol A and bisphenol A glucuronide from an ovine semi-physiological toxicokinetic model. Sci Rep 2017; 7:15330. [PMID: 29127374 PMCID: PMC5681680 DOI: 10.1038/s41598-017-15646-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 10/30/2017] [Indexed: 11/23/2022] Open
Abstract
Bisphenol A (BPA) risk assessment is hampered by the difficulty of determining the extent of internal exposure in the human fetus and uncertainties regarding BPA toxicokinetics (TK) in the maternal-fetal unit. A feto-maternal TK model describing BPA and BPA glucuronide (BPAG) disposition in sheep was humanized, using human TK data obtained after d6-BPA administration on a cookie, to predict BPA and BPAG kinetics in the human mother-fetus unit. Validation of the model predictions included the assessed dose proportionality of BPA and BPAG disposition and the similarity between the simulated and measured time courses of BPA and BPAG in fetal rhesus monkeys after BPA maternal dosing. The model predicted fluctuations in fetal BPA concentrations associated with typical maternal exposure to BPA through the diet, with similar trough (0.011 ng/L vs 0.014 ng/L) and lower peak BPA concentrations (0.023 ng/L vs 0.14 ng/L) in fetal than in maternal plasma. BPAG concentrations in fetal plasma were predicted to increase over time to reach a steady value (29 ng/L) reflecting the cumulative BPA dose received by the fetus. Model-predicted BPAG concentrations in fetal plasma are consistent with reported levels in human cord blood that may be considered as relevant markers of the BPA dose entering blood throughout fetal life.
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Affiliation(s)
- Glenn Gauderat
- Toxalim, Université de Toulouse, INRA (Institut National de la Recherche Agronomique), INP (Institut National Polytechnique de Toulouse) -ENVT (Ecole Nationale Vétérinaire de Toulouse), Toulouse, France.,Agreenium's International Research School (EIR-A), Paris, France
| | - Nicole Picard-Hagen
- Toxalim, Université de Toulouse, INRA (Institut National de la Recherche Agronomique), INP (Institut National Polytechnique de Toulouse) -ENVT (Ecole Nationale Vétérinaire de Toulouse), Toulouse, France
| | - Pierre-Louis Toutain
- Toxalim, Université de Toulouse, INRA (Institut National de la Recherche Agronomique), INP (Institut National Polytechnique de Toulouse) -ENVT (Ecole Nationale Vétérinaire de Toulouse), Toulouse, France
| | - Rémi Servien
- Toxalim, Université de Toulouse, INRA (Institut National de la Recherche Agronomique), INP (Institut National Polytechnique de Toulouse) -ENVT (Ecole Nationale Vétérinaire de Toulouse), Toulouse, France
| | - Catherine Viguié
- Toxalim, Université de Toulouse, INRA (Institut National de la Recherche Agronomique), INP (Institut National Polytechnique de Toulouse) -ENVT (Ecole Nationale Vétérinaire de Toulouse), Toulouse, France
| | - Sylvie Puel
- Toxalim, Université de Toulouse, INRA (Institut National de la Recherche Agronomique), INP (Institut National Polytechnique de Toulouse) -ENVT (Ecole Nationale Vétérinaire de Toulouse), Toulouse, France
| | - Marlène Z Lacroix
- Toxalim, Université de Toulouse, INRA (Institut National de la Recherche Agronomique), INP (Institut National Polytechnique de Toulouse) -ENVT (Ecole Nationale Vétérinaire de Toulouse), Toulouse, France
| | - Tanguy Corbel
- Toxalim, Université de Toulouse, INRA (Institut National de la Recherche Agronomique), INP (Institut National Polytechnique de Toulouse) -ENVT (Ecole Nationale Vétérinaire de Toulouse), Toulouse, France
| | - Alain Bousquet-Melou
- Toxalim, Université de Toulouse, INRA (Institut National de la Recherche Agronomique), INP (Institut National Polytechnique de Toulouse) -ENVT (Ecole Nationale Vétérinaire de Toulouse), Toulouse, France
| | - Véronique Gayrard
- Toxalim, Université de Toulouse, INRA (Institut National de la Recherche Agronomique), INP (Institut National Polytechnique de Toulouse) -ENVT (Ecole Nationale Vétérinaire de Toulouse), Toulouse, France.
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Occupational Exposure to Bisphenol A (BPA): A Reality That Still Needs to Be Unveiled. TOXICS 2017; 5:toxics5030022. [PMID: 29051454 PMCID: PMC5634705 DOI: 10.3390/toxics5030022] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 08/25/2017] [Accepted: 09/11/2017] [Indexed: 11/21/2022]
Abstract
Bisphenol A (BPA), 2,2-bis(4-hydroxyphenyl) propane, is one of the most utilized industrial chemicals worldwide, with the ability to interfere with/or mimic estrogenic hormones with associated biological responses. Environmental human exposure to this endocrine disruptor, mostly through oral intake, is considered a generalized phenomenon, particularly in developed countries. However, in the context of occupational exposure, non-dietary exposure sources (e.g., air and contact) cannot be underestimated. Here, we performed a review of the literature on BPA occupational exposure and associated health effects. Relevantly, the authors only identified 19 studies from 2009 to 2017 that demonstrate that occupationally exposed individuals have significantly higher detected BPA levels than environmentally exposed populations and that the detection rate of serum BPA increases in relation to the time of exposure. However, only 12 studies performed in China have correlated potential health effects with detected BPA levels, and shown that BPA-exposed male workers are at greater risk of male sexual dysfunction across all domains of sexual function; also, endocrine disruption, alterations to epigenetic marks (DNA methylation) and epidemiological evidence have shown significant effects on the offspring of parents exposed to BPA during pregnancy. This overview raises awareness of the dramatic and consistent increase in the production and exposure of BPA and creates urgency to assess the actual exposure of workers to this xenoestrogen and to evaluate potential associated adverse health effects.
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Bisphenol A and estrogen induce proliferation of human thyroid tumor cells via an estrogen-receptor-dependent pathway. Arch Biochem Biophys 2017; 633:29-39. [PMID: 28882636 DOI: 10.1016/j.abb.2017.09.002] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 08/29/2017] [Accepted: 09/01/2017] [Indexed: 01/24/2023]
Abstract
OBJECTIVE To determine the relationship between papillary thyroid carcinoma and environmental exposure to bisphenol A (BPA) or 17-β estrogen (E2) by assessing the effects of these compounds on estrogen receptor expression and AKT/mTOR signaling. METHODS The effects of low levels of BPA (1mM-10nM) and 17β-estradiol (E2, 0.1mM-1nM) on ER expression and cellular proliferation were determined in human thyroid papillary cancer BHP10-3 cells. Protein and mRNA levels of estrogen nuclear receptors (ERα/ERβ) and membrane receptors (GPR30) were determined by immunofluorescence assay, Western blotting, and RT-PCR, respectively, and proliferation was assessed by CCK-8 assay. RESULTS The proliferative effects of BPA and E2 were both concentration- and time-dependent. Expression of ERα/ERβ and GPR30 were enhanced by BPA and E2. BPA and E2 could quickly phosphorylate AKT/mTOR. Moreover, ICI suppressed ERα expression and activated GPR30 as did G-1. G-15 reversed the effects of E2 on GPR30 and AKT/mTOR, but did not alter the effect of BPA. CONCLUSIONS BPA influences thyroid cancer proliferation by regulating expression of ERs and GPR30, a mechanism that differs from E2. In addition, ICI and G-15 may have the potential to be used as anti-thyroid cancer agents.
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Jeong JS, Nam KT, Lee B, Pamungkas AD, Song D, Kim M, Yu WJ, Lee J, Jee S, Park YH, Lim KM. Low-Dose Bisphenol A Increases Bile Duct Proliferation in Juvenile Rats: A Possible Evidence for Risk of Liver Cancer in the Exposed Population? Biomol Ther (Seoul) 2017; 25:545-552. [PMID: 28822992 PMCID: PMC5590799 DOI: 10.4062/biomolther.2017.148] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 08/03/2017] [Accepted: 08/03/2017] [Indexed: 11/05/2022] Open
Abstract
Increasing concern is being given to the association between risk of cancer and exposure to low-dose bisphenol A (BPA), especially in young-aged population. In this study, we investigated the effects of repeated oral treatment of low to high dose BPA in juvenile Sprague-Dawley rats. Exposing juvenile rats to BPA (0, 0.5, 5, 50, and 250 mg/kg oral gavage) from post-natal day 9 for 90 days resulted in higher food intakes and increased body weights in biphasic dose-effect relationship. Male mammary glands were atrophied at high dose, which coincided with sexual pre-maturation of females. Notably, proliferative changes with altered cell foci and focal inflammation were observed around bile ducts in the liver of all BPA-dosed groups in males, which achieved statistical significance from 0.5 mg/kg (ANOVA, Dunnett's test, p<0.05). Toxicokinetic analysis revealed that systemic exposure to BPA was greater at early age (e.g., 210-fold in Cmax, and 26-fold in AUC at 50 mg/kg in male on day 1 over day 90) and in females (e.g., 4-fold in Cmax and 1.6-fold in AUC at 50 mg/kg vs. male on day 1), which might have stemmed from either age- or gender-dependent differences in metabolic capacity. These results may serve as evidence for the association between risk of cancer and exposure to low-dose BPA, especially in young children, as well as for varying toxicity of xenobiotics in different age and gender groups.
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Affiliation(s)
- Ji Seong Jeong
- Developmental and Reproductive Toxicology Research Group, Korea Institute of Toxicology, Daejeon 34114, Republic of Korea
| | - Ki Taek Nam
- Severance Biomedical Science Institute, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Buhyun Lee
- Severance Biomedical Science Institute, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | | | - Daeun Song
- College of Pharmacy, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Minjeong Kim
- College of Pharmacy, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Wook-Joon Yu
- Developmental and Reproductive Toxicology Research Group, Korea Institute of Toxicology, Daejeon 34114, Republic of Korea
| | - Jinsoo Lee
- Developmental and Reproductive Toxicology Research Group, Korea Institute of Toxicology, Daejeon 34114, Republic of Korea
| | - Sunha Jee
- Department of Epidemiology and Health Promotion, and Institute for Health Promotion, Graduate School of Public Health, Yonsei University, Seoul 03722, Republic of Korea
| | - Youngja H Park
- College of Pharmacy, Korea University, Sejong 30019, Republic of Korea
| | - Kyung-Min Lim
- College of Pharmacy, Ewha Womans University, Seoul 03760, Republic of Korea
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EDCs Mixtures: A Stealthy Hazard for Human Health? TOXICS 2017; 5:toxics5010005. [PMID: 29051438 PMCID: PMC5606671 DOI: 10.3390/toxics5010005] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 01/23/2017] [Accepted: 01/25/2017] [Indexed: 12/27/2022]
Abstract
Endocrine disrupting chemicals (EDCs) are exogenous chemicals that may occur naturally (e.g., phytoestrogens), while others are industrial substances and plasticizers commonly utilized worldwide to which human exposure, particularly at low-doses, is omnipresent, persistent and occurs in complex mixtures. EDCs can interfere with/or mimic estrogenic hormones and, consequently, can simultaneously trigger diverse signaling pathways which result in diverse and divergent biological responses. Additionally, EDCs can also bioaccumulate in lipid compartments of the organism forming a mixed “body burden” of contaminants. Although the independent action of chemicals has been considered the main principle in EDCs mixture toxicity, recent studies have demonstrated that numerous effects cannot be predicted when analyzing single compounds independently. Co-exposure to these agents, particularly in critical windows of exposure, may induce hazardous health effects potentially associated with a complex “body burden” of different origins. Here, we performed an exhaustive review of the available literature regarding EDCs mixtures exposure, toxicity mechanisms and effects, particularly at the most vulnerable human life stages. Although the assessment of potential risks to human health due to exposure to EDCs mixtures is a major topic for consumer safety, information regarding effective mixtures effects is still scarce.
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Neonatal bisphenol A exposure induces meiotic arrest and apoptosis of spermatogenic cells. Oncotarget 2016; 7:10606-15. [PMID: 26863571 PMCID: PMC4891144 DOI: 10.18632/oncotarget.7218] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 01/18/2015] [Indexed: 11/25/2022] Open
Abstract
Bisphenol A (BPA) is a widely used industrial plasticizer, which is ubiquitously present in the environment and organisms. As an endocrine disruptor, BPA has caused significant concerns regarding its interference with reproductive function. However, little is known about the impact of BPA exposure on early testicular development. The aim of the present study was to investigate the influence of neonatal BPA exposure on the first wave of spermatogenesis. Newborn male mice were subcutaneously injected with BPA (0.01, 0.1 and 5 mg/kg body weight) daily from postnatal day (PND) 1 to 21. Histological analysis of testes at PND 22 revealed that BPA-treated testes contained mostly spermatogonia and spermatocytes with markedly less round spermatids, indicating signs of meiotic arrest. Terminal dUTP nick-end labeling (TUNEL) assay showed that BPA treatment significantly increased the number of apoptotic germ cells per tubule, which corroborated the observation of meiotic arrest. In addition, BPA caused abnormal proliferation of germ cells as revealed by Proliferating Cell Nuclear Antigen (PCNA) immunohistochemical staining. Mechanistically, BPA-treated testes displayed a complete lack of BOULE expression, which is a conserved key regulator for spermatogenesis. Moreover, BPA significantly increased the expression of estrogen receptor (ER) α and β in the developing testis. The present study demonstrated that neonatal BPA exposure disrupted meiosis progression during the first wave of spermatogenesis, which may be, at least in part, due to inhibition of BOULE expression and/or up-regulation of ERα/β expression in BPA-exposed developing testis.
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Liu L, Wang C, Zhuo K. Cetyltrimethylammonium bromide(CTAB)-ionic liquid composite modified electrode for sensitive cyclic voltammetric determination of bisphenol A. Chem Res Chin Univ 2016. [DOI: 10.1007/s40242-016-6162-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Jedeon K, Loiodice S, Salhi K, Le Normand M, Houari S, Chaloyard J, Berdal A, Babajko S. Androgen Receptor Involvement in Rat Amelogenesis: An Additional Way for Endocrine-Disrupting Chemicals to Affect Enamel Synthesis. Endocrinology 2016; 157:4287-4296. [PMID: 27684650 DOI: 10.1210/en.2016-1342] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Endocrine-disrupting chemicals (EDCs) that interfere with the steroid axis can affect amelogenesis, leading to enamel hypomineralization similar to that of molar incisor hypomineralization, a recently described enamel disease. We investigated the sex steroid receptors that may mediate the effects of EDCs during rat amelogenesis. The expression of androgen receptor (AR), estrogen receptor (ER)-α, and progesterone receptor was dependent on the stage of ameloblast differentiation, whereas ERβ remained undetectable. AR was the only receptor selectively expressed in ameloblasts involved in final enamel mineralization. AR nuclear translocation and induction of androgen-responsive element-containing promoter activity upon T treatment, demonstrated ameloblast responsiveness to androgens. T regulated the expression of genes involved in enamel mineralization such as KLK4, amelotin, SLC26A4, and SLC5A8 but not the expression of genes encoding matrix proteins, which determine enamel thickness. Vinclozolin and to a lesser extent bisphenol A, two antiandrogenic EDCs that cause enamel defects, counteracted the actions of T. In conclusion, we show, for the first time, the following: 1) ameloblasts express AR; 2) the androgen signaling pathway is involved in the enamel mineralization process; and 3) EDCs with antiandrogenic effects inhibit AR activity and preferentially affect amelogenesis in male rats. Their action, through the AR pathway, may specifically and irreversibly affect enamel, potentially leading to the use of dental defects as a biomarker of exposure to environmental pollutants. These results are consistent with the steroid hormones affecting ameloblasts, raising the issue of the hormonal influence on amelogenesis and possible sexual dimorphism in enamel quality.
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Affiliation(s)
- Katia Jedeon
- Centre de Recherche des Cordeliers (K.J., S.L., K.S., M.L.N., S.H., J.C., A.B., S.B.), INSERM Unité Mixte de Recherche en Santé 1138, Université Paris-Descartes, Université Pierre et Marie Curie-Paris, Paris Laboratory of Molecular Oral Pathophysiology, and Unité de Formation et de Recherche d'Odontologie (K.J., S.L., K.S., S.H., J.C., A.B., S.B.), Université Paris-Diderot, F-75006 Paris, France; and Centre de Référence des Maladies Rares de la Face et de la Cavité Buccale (K.J., A.B.), Hôpital Rothschild, Assistance Publique-Hôpitaux de Paris, F-75571 Paris, France
| | - Sophia Loiodice
- Centre de Recherche des Cordeliers (K.J., S.L., K.S., M.L.N., S.H., J.C., A.B., S.B.), INSERM Unité Mixte de Recherche en Santé 1138, Université Paris-Descartes, Université Pierre et Marie Curie-Paris, Paris Laboratory of Molecular Oral Pathophysiology, and Unité de Formation et de Recherche d'Odontologie (K.J., S.L., K.S., S.H., J.C., A.B., S.B.), Université Paris-Diderot, F-75006 Paris, France; and Centre de Référence des Maladies Rares de la Face et de la Cavité Buccale (K.J., A.B.), Hôpital Rothschild, Assistance Publique-Hôpitaux de Paris, F-75571 Paris, France
| | - Khaled Salhi
- Centre de Recherche des Cordeliers (K.J., S.L., K.S., M.L.N., S.H., J.C., A.B., S.B.), INSERM Unité Mixte de Recherche en Santé 1138, Université Paris-Descartes, Université Pierre et Marie Curie-Paris, Paris Laboratory of Molecular Oral Pathophysiology, and Unité de Formation et de Recherche d'Odontologie (K.J., S.L., K.S., S.H., J.C., A.B., S.B.), Université Paris-Diderot, F-75006 Paris, France; and Centre de Référence des Maladies Rares de la Face et de la Cavité Buccale (K.J., A.B.), Hôpital Rothschild, Assistance Publique-Hôpitaux de Paris, F-75571 Paris, France
| | - Manon Le Normand
- Centre de Recherche des Cordeliers (K.J., S.L., K.S., M.L.N., S.H., J.C., A.B., S.B.), INSERM Unité Mixte de Recherche en Santé 1138, Université Paris-Descartes, Université Pierre et Marie Curie-Paris, Paris Laboratory of Molecular Oral Pathophysiology, and Unité de Formation et de Recherche d'Odontologie (K.J., S.L., K.S., S.H., J.C., A.B., S.B.), Université Paris-Diderot, F-75006 Paris, France; and Centre de Référence des Maladies Rares de la Face et de la Cavité Buccale (K.J., A.B.), Hôpital Rothschild, Assistance Publique-Hôpitaux de Paris, F-75571 Paris, France
| | - Sophia Houari
- Centre de Recherche des Cordeliers (K.J., S.L., K.S., M.L.N., S.H., J.C., A.B., S.B.), INSERM Unité Mixte de Recherche en Santé 1138, Université Paris-Descartes, Université Pierre et Marie Curie-Paris, Paris Laboratory of Molecular Oral Pathophysiology, and Unité de Formation et de Recherche d'Odontologie (K.J., S.L., K.S., S.H., J.C., A.B., S.B.), Université Paris-Diderot, F-75006 Paris, France; and Centre de Référence des Maladies Rares de la Face et de la Cavité Buccale (K.J., A.B.), Hôpital Rothschild, Assistance Publique-Hôpitaux de Paris, F-75571 Paris, France
| | - Jessica Chaloyard
- Centre de Recherche des Cordeliers (K.J., S.L., K.S., M.L.N., S.H., J.C., A.B., S.B.), INSERM Unité Mixte de Recherche en Santé 1138, Université Paris-Descartes, Université Pierre et Marie Curie-Paris, Paris Laboratory of Molecular Oral Pathophysiology, and Unité de Formation et de Recherche d'Odontologie (K.J., S.L., K.S., S.H., J.C., A.B., S.B.), Université Paris-Diderot, F-75006 Paris, France; and Centre de Référence des Maladies Rares de la Face et de la Cavité Buccale (K.J., A.B.), Hôpital Rothschild, Assistance Publique-Hôpitaux de Paris, F-75571 Paris, France
| | - Ariane Berdal
- Centre de Recherche des Cordeliers (K.J., S.L., K.S., M.L.N., S.H., J.C., A.B., S.B.), INSERM Unité Mixte de Recherche en Santé 1138, Université Paris-Descartes, Université Pierre et Marie Curie-Paris, Paris Laboratory of Molecular Oral Pathophysiology, and Unité de Formation et de Recherche d'Odontologie (K.J., S.L., K.S., S.H., J.C., A.B., S.B.), Université Paris-Diderot, F-75006 Paris, France; and Centre de Référence des Maladies Rares de la Face et de la Cavité Buccale (K.J., A.B.), Hôpital Rothschild, Assistance Publique-Hôpitaux de Paris, F-75571 Paris, France
| | - Sylvie Babajko
- Centre de Recherche des Cordeliers (K.J., S.L., K.S., M.L.N., S.H., J.C., A.B., S.B.), INSERM Unité Mixte de Recherche en Santé 1138, Université Paris-Descartes, Université Pierre et Marie Curie-Paris, Paris Laboratory of Molecular Oral Pathophysiology, and Unité de Formation et de Recherche d'Odontologie (K.J., S.L., K.S., S.H., J.C., A.B., S.B.), Université Paris-Diderot, F-75006 Paris, France; and Centre de Référence des Maladies Rares de la Face et de la Cavité Buccale (K.J., A.B.), Hôpital Rothschild, Assistance Publique-Hôpitaux de Paris, F-75571 Paris, France
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Integrated exposure and risk characterization of bisphenol-A in Europe. Food Chem Toxicol 2016; 98:134-147. [PMID: 27769850 DOI: 10.1016/j.fct.2016.10.017] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2016] [Revised: 10/11/2016] [Accepted: 10/17/2016] [Indexed: 01/14/2023]
Abstract
The current study aims at a comprehensive risk characterization of bisphenol A (BPA) supported by an integrated exposure modelling framework that comprises far field and near field exposure modelling coupled to a dynamic lifetime PBTK model. Exposure analysis was done on European data of BPA food residues and human biomonitoring (HBM). The latter were further assimilated through an advanced exposure reconstruction modelling framework to estimate the corresponding external and internal systemic dose of BPA and its metabolites. Special attention was paid on the assessment of exposure to BPA during critical developmental stages such as gestation by modelling the mother-fetus toxicokinetic interaction. Our findings showed that current exposure levels in Europe are below the temporary Tolerable Daily Intake (t-TDI) of 4 μg/kg_bw/d proposed by the European Food Safety Authority. Taking into account age-dependent bioavailability differences, internal exposure of premature neonates hosted in intensive care units was reckoned close to the biologically effective dose (BED) resulting from translating the EFSA temporary total daily intake (t-TDI) into equivalent internal dose. Use of the ToxCast21 Biological Pathway Altering Dose (BPAD) as an alternative internal exposure reference value, resulted in increased margins of safety compared to the conventional exposure/risk characterization scheme.
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Yang X, Duan J, Fisher J. Application of Physiologically Based Absorption Modeling to Characterize the Pharmacokinetic Profiles of Oral Extended Release Methylphenidate Products in Adults. PLoS One 2016; 11:e0164641. [PMID: 27723791 PMCID: PMC5056674 DOI: 10.1371/journal.pone.0164641] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Accepted: 09/28/2016] [Indexed: 11/30/2022] Open
Abstract
A previously presented physiologically-based pharmacokinetic model for immediate release (IR) methylphenidate (MPH) was extended to characterize the pharmacokinetic behaviors of oral extended release (ER) MPH formulations in adults for the first time. Information on the anatomy and physiology of the gastrointestinal (GI) tract, together with the biopharmaceutical properties of MPH, was integrated into the original model, with model parameters representing hepatic metabolism and intestinal non-specific loss recalibrated against in vitro and in vivo kinetic data sets with IR MPH. A Weibull function was implemented to describe the dissolution of different ER formulations. A variety of mathematical functions can be utilized to account for the engineered release/dissolution technologies to achieve better model performance. The physiological absorption model tracked well the plasma concentration profiles in adults receiving a multilayer-release MPH formulation or Metadate CD, while some degree of discrepancy was observed between predicted and observed plasma concentration profiles for Ritalin LA and Medikinet Retard. A local sensitivity analysis demonstrated that model parameters associated with the GI tract significantly influenced model predicted plasma MPH concentrations, albeit to varying degrees, suggesting the importance of better understanding the GI tract physiology, along with the intestinal non-specific loss of MPH. The model provides a quantitative tool to predict the biphasic plasma time course data for ER MPH, helping elucidate factors responsible for the diverse plasma MPH concentration profiles following oral dosing of different ER formulations.
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Affiliation(s)
- Xiaoxia Yang
- National Center for Toxicological Research, Food and Drug Administration, Jefferson, Arkansas, United States of America
- * E-mail:
| | - John Duan
- Center for Drug Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland, United States of America
| | - Jeffrey Fisher
- National Center for Toxicological Research, Food and Drug Administration, Jefferson, Arkansas, United States of America
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Cheong A, Zhang X, Cheung YY, Tang WY, Chen J, Ye SH, Medvedovic M, Leung YK, Prins GS, Ho SM. DNA methylome changes by estradiol benzoate and bisphenol A links early-life environmental exposures to prostate cancer risk. Epigenetics 2016; 11:674-689. [PMID: 27415467 PMCID: PMC5048723 DOI: 10.1080/15592294.2016.1208891] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Developmental exposure to endocrine-disrupting chemicals (EDCs), 17β-estradiol-3-benzoate (EB) and bisphenol A (BPA), increases susceptibility to prostate cancer (PCa) in rodent models. Here, we used the methylated-CpG island recovery assay (MIRA)-assisted genomic tiling and CpG island arrays to identify treatment-associated methylome changes in the postnatal day (PND)90 dorsal prostate tissues of Sprague-Dawley rats neonatally (PND1, 3, and 5) treated with 25 µg/pup or 2,500 µg EB/kg body weight (BW) or 0.1 µg BPA/pup or 10 µg BPA/kg BW. We identified 111 EB-associated and 86 BPA-associated genes, with 20 in common, that have significant differentially methylated regions. Pathway analysis revealed cancer as the top common disease pathway. Bisulfite sequencing validated the differential methylation patterns observed by array analysis in 15 identified candidate genes. The methylation status of 7 (Pitx3, Wnt10b, Paqr4, Sox2, Chst14, Tpd52, Creb3l4) of these 15 genes exhibited an inverse correlation with gene expression in tissue samples. Cell-based assays, using 5-aza-cytidine-treated normal (NbE-1) and cancerous (AIT) rat prostate cells, added evidence of DNA methylation-mediated gene expression of 6 genes (exception: Paqr4). Functional connectivity of these genes was linked to embryonic stem cell pluripotency. Furthermore, clustering analyses using the dataset from The Cancer Genome Atlas revealed that expression of this set of 7 genes was associated with recurrence-free survival of PCa patients. In conclusion, our study reveals that gene-specific promoter methylation changes, resulting from early-life EDC exposure in the rat, may serve as predictive epigenetic biomarkers of PCa recurrence, and raises the possibility that such exposure may impact human disease.
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Affiliation(s)
- Ana Cheong
- a Department of Environmental Health , University of Cincinnati College of Medicine , Cincinnati , OH , USA.,b Center for Environmental Genetics, University of Cincinnati College of Medicine , Cincinnati , OH , USA
| | - Xiang Zhang
- a Department of Environmental Health , University of Cincinnati College of Medicine , Cincinnati , OH , USA.,b Center for Environmental Genetics, University of Cincinnati College of Medicine , Cincinnati , OH , USA
| | - Yuk-Yin Cheung
- a Department of Environmental Health , University of Cincinnati College of Medicine , Cincinnati , OH , USA
| | - Wan-Yee Tang
- a Department of Environmental Health , University of Cincinnati College of Medicine , Cincinnati , OH , USA.,b Center for Environmental Genetics, University of Cincinnati College of Medicine , Cincinnati , OH , USA
| | - Jing Chen
- a Department of Environmental Health , University of Cincinnati College of Medicine , Cincinnati , OH , USA
| | - Shu-Hua Ye
- c Department of Urology , College of Medicine, University of Illinois at Chicago , Chicago , IL , USA
| | - Mario Medvedovic
- a Department of Environmental Health , University of Cincinnati College of Medicine , Cincinnati , OH , USA.,b Center for Environmental Genetics, University of Cincinnati College of Medicine , Cincinnati , OH , USA.,d Cincinnati Cancer Center , Cincinnati , OH , USA
| | - Yuet-Kin Leung
- a Department of Environmental Health , University of Cincinnati College of Medicine , Cincinnati , OH , USA.,b Center for Environmental Genetics, University of Cincinnati College of Medicine , Cincinnati , OH , USA.,d Cincinnati Cancer Center , Cincinnati , OH , USA
| | - Gail S Prins
- c Department of Urology , College of Medicine, University of Illinois at Chicago , Chicago , IL , USA.,e University of Illinois Cancer Center , Chicago , IL , USA
| | - Shuk-Mei Ho
- a Department of Environmental Health , University of Cincinnati College of Medicine , Cincinnati , OH , USA.,b Center for Environmental Genetics, University of Cincinnati College of Medicine , Cincinnati , OH , USA.,d Cincinnati Cancer Center , Cincinnati , OH , USA.,f Cincinnati Veteran Affairs Hospital Medical Center , Cincinnati , OH , USA
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Ho SM, Cheong A, Adgent MA, Veevers J, Suen AA, Tam NNC, Leung YK, Jefferson WN, Williams CJ. Environmental factors, epigenetics, and developmental origin of reproductive disorders. Reprod Toxicol 2016; 68:85-104. [PMID: 27421580 DOI: 10.1016/j.reprotox.2016.07.011] [Citation(s) in RCA: 133] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 06/21/2016] [Accepted: 07/09/2016] [Indexed: 12/31/2022]
Abstract
Sex-specific differentiation, development, and function of the reproductive system are largely dependent on steroid hormones. For this reason, developmental exposure to estrogenic and anti-androgenic endocrine disrupting chemicals (EDCs) is associated with reproductive dysfunction in adulthood. Human data in support of "Developmental Origins of Health and Disease" (DOHaD) comes from multigenerational studies on offspring of diethylstilbestrol-exposed mothers/grandmothers. Animal data indicate that ovarian reserve, female cycling, adult uterine abnormalities, sperm quality, prostate disease, and mating behavior are susceptible to DOHaD effects induced by EDCs such as bisphenol A, genistein, diethylstilbestrol, p,p'-dichlorodiphenyl-dichloroethylene, phthalates, and polyaromatic hydrocarbons. Mechanisms underlying these EDC effects include direct mimicry of sex steroids or morphogens and interference with epigenomic sculpting during cell and tissue differentiation. Exposure to EDCs is associated with abnormal DNA methylation and other epigenetic modifications, as well as altered expression of genes important for development and function of reproductive tissues. Here we review the literature exploring the connections between developmental exposure to EDCs and adult reproductive dysfunction, and the mechanisms underlying these effects.
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Affiliation(s)
- Shuk-Mei Ho
- Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, OH, United States; Center for Environmental Genetics, University of Cincinnati College of Medicine, Cincinnati, OH, United States; Cincinnati Cancer Center, Cincinnati, OH, United States; Cincinnati Veteran Affairs Hospital Medical Center, Cincinnati, OH, United States.
| | - Ana Cheong
- Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, OH, United States; Center for Environmental Genetics, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Margaret A Adgent
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Jennifer Veevers
- Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, OH, United States; Cincinnati Cancer Center, Cincinnati, OH, United States
| | - Alisa A Suen
- Reproductive Medicine Group, Reproductive & Developmental Biology Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC, United States; Curriculum in Toxicology, UNC Chapel Hill, Chapel Hill, NC, United States
| | - Neville N C Tam
- Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, OH, United States; Center for Environmental Genetics, University of Cincinnati College of Medicine, Cincinnati, OH, United States; Cincinnati Cancer Center, Cincinnati, OH, United States
| | - Yuet-Kin Leung
- Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, OH, United States; Center for Environmental Genetics, University of Cincinnati College of Medicine, Cincinnati, OH, United States; Cincinnati Cancer Center, Cincinnati, OH, United States
| | - Wendy N Jefferson
- Reproductive Medicine Group, Reproductive & Developmental Biology Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC, United States
| | - Carmen J Williams
- Reproductive Medicine Group, Reproductive & Developmental Biology Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC, United States.
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Sharma R, Kotyk MW, Wiltshire WA. An investigation into bisphenol A leaching from materials used intraorally. J Am Dent Assoc 2016; 147:545-50. [DOI: 10.1016/j.adaj.2016.01.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Revised: 01/20/2016] [Accepted: 01/22/2016] [Indexed: 02/07/2023]
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Loss of Hippocampal Oligodendrocytes Contributes to the Deficit of Contextual Fear Learning in Adult Rats Experiencing Early Bisphenol A Exposure. Mol Neurobiol 2016; 54:4524-4536. [PMID: 27364615 DOI: 10.1007/s12035-016-0003-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 06/14/2016] [Indexed: 02/06/2023]
Abstract
During early development, continuous exposure to environmental contaminants such as bisphenol A (BPA) is known to alter neuronal development, resulting in aberrant brain structure and predisposing individuals to developing neuropsychiatric disorders later in life. While the altered oligodendrocyte (OL) structure and function have been casually linked to the occurrence of numerous psychiatric diseases, it remains open whether early BPA exposure (EBE) also recruits OLs to mediate its toxicity in the brain. Here, we observed that EBE from birth to postnatal day 21 caused a substantial loss of hippocampal OLs in rat pups. The OL loss was enduring and manifested even when the affected pups spanned into their adulthood. In parallel, the expression of two key proteins in mature OLs, myelin basic protein (MBP), and monocarboxylate transporter 1 (MCT1) was markedly downregulated in adult hippocampus with a considerable reduction in the number of myelinated axons. By contrast, the myelination of individual axons remained intact. The altered hippocampal OLs were related to EBE-mediated disruption of estrogen receptor (ER) signaling in developing OLs and could be readily prevented by treatment with low level of ICI 182780, an ER antagonist. Importantly, the adult rats subject to EBE exhibited clear deficit in contextual fear memory, which highly correlated with OL loss and decreased MBP and MCT1 expression in hippocampus. The OL loss may thus represent an alternative route through which EBE has its adversity on the brain and contributes to the development of neuropsychiatric illness.
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