451
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Yu X, Xue J, Yao H, Wu Q, Venkatesan AK, Halden RU, Kannan K. Occurrence and estrogenic potency of eight bisphenol analogs in sewage sludge from the U.S. EPA targeted national sewage sludge survey. J Hazard Mater 2015; 299:733-9. [PMID: 26298263 DOI: 10.1016/j.jhazmat.2015.07.012] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Revised: 07/03/2015] [Accepted: 07/06/2015] [Indexed: 05/05/2023]
Abstract
As health concerns over bisphenol A (BPA) in consumer products are mounting, this weak estrogen mimicking compound is gradually being replaced with structural analogs, whose environmental occurrence and estrogen risks are not well understood yet. We used high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) to determine the concentrations of eight bisphenol analogs in 76 sewage sludge samples collected by the U.S. Environmental Protection Agency (EPA) in 2006/2007 from 74 wastewater treatment plants (WWTPs) in 35 states. Bisphenols were detected at the following concentration ranges (ng/g dry weight) and detection frequencies: BPA (6.5-4700; 100%); bisphenol S (BPS; <1.79-1480; 84%); bisphenol F (BPF; <1.79-242; 68%); bisphenol AF (BPAF; <1.79-72.2; 46%); bisphenol P (BPP; <1.79-6.42; <5%), bisphenol B (BPB; <1.79-5.60; <5%), and bisphenol Z (BPZ; <1.79--66.7; <5%). Bisphenol AP (BPAP) was not detected in any of the samples (<1.79 ng/g dw). Concentrations of BPA in sewage sludge were an order of magnitude higher than those reported in China but similar to those in Germany. The calculated 17β-estradiol equivalents (E2EQ) of bisphenols present in sludge samples were 7.74 (0.26-90.5) pg/g dw, which were three orders of magnitude lower than the estrogenic activity contributed by natural estrogens present in the sludge. The calculated mass loading of bisphenols through the disposal of sludge and wastewater was <0.02% of the total U.S. production. As the usage of BPA is expected to decline further, environmental emissions of BPS, BPF, and BPAF are likely to increase in the future. This study establishes baseline levels and estrogenic activity of diverse bisphenol analogs in sewage sludge.
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Affiliation(s)
- Xiaohua Yu
- Wadsworth Center, New York State Department of Health, and Department of Environmental Health Sciences, School of Public Health, State University of New York at Albany, Empire State Plaza, P.O. Box 509, Albany, NY 12201-0509, USA; Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Beijing 100044, China
| | - Jingchuan Xue
- Wadsworth Center, New York State Department of Health, and Department of Environmental Health Sciences, School of Public Health, State University of New York at Albany, Empire State Plaza, P.O. Box 509, Albany, NY 12201-0509, USA
| | - Hong Yao
- Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Beijing 100044, China
| | - Qian Wu
- Wadsworth Center, New York State Department of Health, and Department of Environmental Health Sciences, School of Public Health, State University of New York at Albany, Empire State Plaza, P.O. Box 509, Albany, NY 12201-0509, USA
| | - Arjun K Venkatesan
- Center for Environmental Security, The Biodesign Institute, Global Security Initiative, Arizona State University, 781 E. Terrace Mall, Tempe, AZ 85287, USA
| | - Rolf U Halden
- Center for Environmental Security, The Biodesign Institute, Global Security Initiative, Arizona State University, 781 E. Terrace Mall, Tempe, AZ 85287, USA
| | - Kurunthachalam Kannan
- Wadsworth Center, New York State Department of Health, and Department of Environmental Health Sciences, School of Public Health, State University of New York at Albany, Empire State Plaza, P.O. Box 509, Albany, NY 12201-0509, USA; Biochemistry Department, Faculty of Science and Experimental Biochemistry Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia.
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452
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Inagaki T, Smith N, Lee EK, Ramakrishnan S. Low dose exposure to Bisphenol A alters development of gonadotropin-releasing hormone 3 neurons and larval locomotor behavior in Japanese Medaka. Neurotoxicology 2015; 52:188-97. [PMID: 26687398 DOI: 10.1016/j.neuro.2015.12.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 11/24/2015] [Accepted: 12/04/2015] [Indexed: 11/30/2022]
Abstract
Accumulating evidence indicates that chronic low dose exposure to Bisphenol A (BPA), an endocrine disruptor, may disrupt normal brain development and behavior mediated by the gonadotropin-releasing hormone (GnRH) pathways. While it is known that GnRH neurons in the hypothalamus regulate reproductive physiology and behavior, functional roles of extra-hypothalamic GnRH neurons remain unclear. Furthermore, little is known whether BPA interacts with extra-hypothalamic GnRH3 neural systems in vulnerable developing brains. Here we examined the impact of low dose BPA exposure on the developing GnRH3 neural system, eye and brain growth, and locomotor activity in transgenic medaka embryos and larvae with GnRH3 neurons tagged with GFP. Fertilized eggs were collected daily and embryos/larvae were chronically exposed to 200ng/ml of BPA, starting at 1 day post fertilization (dpf). BPA significantly increased fluorescence intensity of the GnRH3-GFP neural population in the terminal nerve (TN) of the forebrain at 3dpf, but decreased the intensity at 5dpf, compared with controls. BPA advanced eye pigmentation without affecting eye and brain size development, and accelerated times to hatch. Following chronic BPA exposure, 20dpf larvae showed suppression of locomotion, both in distance covered and speed of movement (47% and 43% reduction, respectively). BPA-induced hypoactivity was accompanied by decreased cell body sizes of individual TN-GnRH3 neurons (14% smaller than those of controls), but not of non-GnRH3 neurons. These novel data demonstrate complex neurobehavioral effects of BPA on the development of extra-hypothalamic GnRH3 neurons in teleost fish.
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Affiliation(s)
- T Inagaki
- Department of Biology, Neuroscience program, University of Puget Sound, Tacoma, WA 98416, USA
| | - N Smith
- Department of Chemistry, University of Puget Sound, Tacoma, WA 98416, USA
| | - E K Lee
- Department of Chemistry, University of Puget Sound, Tacoma, WA 98416, USA
| | - S Ramakrishnan
- Department of Biology, Neuroscience program, University of Puget Sound, Tacoma, WA 98416, USA.
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453
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Chen J, Xiao Y, Gai Z, Li R, Zhu Z, Bai C, Tanguay RL, Xu X, Huang C, Dong Q. Reproductive toxicity of low level bisphenol A exposures in a two-generation zebrafish assay: Evidence of male-specific effects. Aquat Toxicol 2015; 169:204-14. [PMID: 26562050 PMCID: PMC6689195 DOI: 10.1016/j.aquatox.2015.10.020] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 10/26/2015] [Accepted: 10/28/2015] [Indexed: 05/03/2023]
Abstract
Bisphenol A (BPA), a high-volume chemical used to make polycarbonate plastic and epoxy resins, is a ubiquitous contaminant in environment and human body. To investigate the reproductive effects of long-term exposure to low concentrations of BPA, a two-generation study was conducted using the aquatic model species of zebrafish. Our findings revealed that exposure to 1nM (0.228μg/L) BPA for continuous two generations resulted in female-biased sex ratio in both F1 and F2 adult population, decreased sperm density, and decreased sperm quality as measured by motility, velocity, ATP content and lipid peroxidation in F1 and F2 males. Females were less sensitive to BPA exposures than males as no adverse effects were found in female gonads or gametes. Delayed hatching at 48hpf and increased malformation and mortality were found in the offspring from BPA exposed F2, but not F1 parents. Most importantly, the adverse effect on larval development and survival from BPA exposed F2 parents was paternal-specific, resulting mainly from BPA exposed males. Subsequent transcription analysis of F2 male gonads revealed dysregulated mitochondrial biogenesis and significant activation of non-canonical Wnt/planar cell polarity and Wnt/Calcium signaling pathways. Gene expression analysis of larvae from BPA exposed F2 parents showed significant reduced expression of DNA methyltransferases such as dnmt1, dnmt3, and dnmt5. In conclusion, low level BPA exposures for continuous two generations not only affects sex ratio and sperm quantity/quality in F1 and F2 adults, reproductive success in offspring from F2 parents, but also perturbs various molecular pathways potentially contributing to these BPA induced male-specific reproductive defects.
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Affiliation(s)
- Jiangfei Chen
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou 325035, China; Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, China
| | - Yanyan Xiao
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou 325035, China; Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, China
| | - Zengxin Gai
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou 325035, China; Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, China
| | - Rong Li
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou 325035, China; Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, China
| | - Zixu Zhu
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou 325035, China; Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, China
| | - Chenglian Bai
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou 325035, China; Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, China
| | - Robert L Tanguay
- Environmental and Molecular Toxicology, The Sinnhuber Aquatic Research Laboratory and the Environmental Health Sciences Center, Oregon State, University, Corvallis, OR 97333, USA
| | - Xiaojiang Xu
- Integrated Bioinformatics, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | - Changjiang Huang
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou 325035, China; Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, China.
| | - Qiaoxiang Dong
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou 325035, China; Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, China.
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454
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Fernández MF, Arrebola JP, Jiménez-Díaz I, Sáenz JM, Molina-Molina JM, Ballesteros O, Kortenkamp A, Olea N. Bisphenol A and other phenols in human placenta from children with cryptorchidism or hypospadias. Reprod Toxicol 2015; 59:89-95. [PMID: 26602963 DOI: 10.1016/j.reprotox.2015.11.002] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Revised: 10/12/2015] [Accepted: 11/02/2015] [Indexed: 10/22/2022]
Abstract
Embryo-foetal exposure to low doses of endocrine disrupting chemicals (EDCs) has been related to reproductive tract diseases in experimental animals but not convincingly in human populations. The aim of this case-control study was to explore the relationship between exposure to non-persistent EDCs during pregnancy and male genital development. Exposure to bisphenol-A (BPA), benzophenones (BPs) [BP-1, BP-2, BP-3, BP-6, BP-8 and 4-hydroxybenzophenone (4-OH-BP),] and parabens (PBs) [methyl-, ethyl-, propyl- and butyl-PB] was analyzed by means of ultra-high performance liquid chromatography-tandem mass spectrometry in placenta samples from a subsample of 28 cases and 51 healthy controls nested in a cohort of newborns recruited between 2000 and 2002. The multivariable regression analyses indicated a statistically significant association between exposure to BPA and propyl-PB and the risk of malformations [adjusted odd ratio (95% CIs) in the third tertile of exposure: 7.2 (1.5-35.5) and 6.4 (1.2-35.5) for BPA and propyl-PB, respectively].
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Affiliation(s)
- Mariana F Fernández
- Instituto de Investigación Biosanitaria (ibs.GRANADA), University of Granada, San Cecilio University Hospital, 18071 Granada, Spain; CIBER en Epidemiología y Salud Pública (CIBERESP), Madrid, Spain.
| | - Juan P Arrebola
- Instituto de Investigación Biosanitaria (ibs.GRANADA), University of Granada, San Cecilio University Hospital, 18071 Granada, Spain; CIBER en Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
| | - Inmaculada Jiménez-Díaz
- Instituto de Investigación Biosanitaria (ibs.GRANADA), University of Granada, San Cecilio University Hospital, 18071 Granada, Spain; Research Group of Analytical Chemistry and Life Sciences, Department of Analytical Chemistry, University of Granada, Granada, Spain
| | - José María Sáenz
- Instituto de Investigación Biosanitaria (ibs.GRANADA), University of Granada, San Cecilio University Hospital, 18071 Granada, Spain
| | - José Manuel Molina-Molina
- Instituto de Investigación Biosanitaria (ibs.GRANADA), University of Granada, San Cecilio University Hospital, 18071 Granada, Spain; CIBER en Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
| | - Oscar Ballesteros
- Research Group of Analytical Chemistry and Life Sciences, Department of Analytical Chemistry, University of Granada, Granada, Spain
| | - Andreas Kortenkamp
- Institute of the Environment, Health and Societies, Brunel University, Kingston Lane, Uxbridge, UB8 3PH, UK
| | - Nicolás Olea
- Instituto de Investigación Biosanitaria (ibs.GRANADA), University of Granada, San Cecilio University Hospital, 18071 Granada, Spain; CIBER en Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
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455
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Kendziorski JA, Belcher SM. Effects of whole life exposure to Bisphenol A or 17α-ethinyl estradiol in uterus of nulligravida CD1 mice. Data Brief 2015; 5:948-53. [PMID: 26702426 PMCID: PMC4669472 DOI: 10.1016/j.dib.2015.10.034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 10/19/2015] [Accepted: 10/23/2015] [Indexed: 11/28/2022] Open
Abstract
Bisphenol A (BPA) is an endocrine disrupting chemical (EDC) with known estrogenic activity. Exposure to BPA in adult mice was shown previously to increase uterine pathology with associated alterations in the immune response and fibrosis. Reported here are uterine histopathology findings from CD1 mice exposed to BPA or 17α-ethinyl estradiol at multiple doses from conception through postnatal day 90. Along with uterine pathology, impacts of exposure on collagen accumulation and F4/80 positive macrophage numbers, as an indicator of immune response in the endometrium and myometrium, are presented. These companion data are from offspring (F1) of the dams analyzed for effects of adult exposures published in the Reproductive Toxicology manuscript titled “Strain-Specific Induction of Endometrial Periglandular Fibrosis in Mice Exposed during Adulthood to the Endocrine Disrupting Chemical Bisphenol A” (doi: 10.1016/j.reprotox.2015.08.001).
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Affiliation(s)
- Jessica A Kendziorski
- Department of Pharmacology and Cell Biophysics, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Scott M Belcher
- Department of Pharmacology and Cell Biophysics, University of Cincinnati, Cincinnati, OH 45267, USA
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456
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Yang X, Doerge DR, Teeguarden JG, Fisher JW. Development of a physiologically based pharmacokinetic model for assessment of human exposure to bisphenol A. Toxicol Appl Pharmacol 2015; 289:442-56. [PMID: 26522835 DOI: 10.1016/j.taap.2015.10.016] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 10/20/2015] [Accepted: 10/27/2015] [Indexed: 01/24/2023]
Abstract
A previously developed physiologically based pharmacokinetic (PBPK) model for bisphenol A (BPA) in adult rhesus monkeys was modified to characterize the pharmacokinetics of BPA and its phase II conjugates in adult humans following oral ingestion. Coupled with in vitro studies on BPA metabolism in the liver and the small intestine, the PBPK model was parameterized using oral pharmacokinetic data with deuterated-BPA (d6-BPA) delivered in cookies to adult humans after overnight fasting. The availability of the serum concentration time course of unconjugated d6-BPA offered direct empirical evidence for the calibration of BPA model parameters. The recalibrated PBPK adult human model for BPA was then evaluated against published human pharmacokinetic studies with BPA. A hypothesis of decreased oral uptake was needed to account for the reduced peak levels observed in adult humans, where d6-BPA was delivered in soup and food was provided prior to BPA ingestion, suggesting the potential impact of dosing vehicles and/or fasting on BPA disposition. With the incorporation of Monte Carlo analysis, the recalibrated adult human model was used to address the inter-individual variability in the internal dose metrics of BPA for the U.S. general population. Model-predicted peak BPA serum levels were in the range of pM, with 95% of human variability falling within an order of magnitude. This recalibrated PBPK model for BPA in adult humans provides a scientific basis for assessing human exposure to BPA that can serve to minimize uncertainties incurred during extrapolations across doses and species.
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Affiliation(s)
- Xiaoxia Yang
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR 72079, United States.
| | - Daniel R Doerge
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR 72079, United States
| | - Justin G Teeguarden
- Health Effects and Exposure Science, Pacific Northwest National Laboratory, Richland, WA 99352, United States; Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, OR 97331, United States
| | - Jeffrey W Fisher
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR 72079, United States
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457
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Pongprueksa P, De Munck J, Duca RC, Poels K, Covaci A, Hoet P, Godderis L, Van Meerbeek B, Van Landuyt KL. Monomer elution in relation to degree of conversion for different types of composite. J Dent 2015; 43:1448-55. [PMID: 26498727 DOI: 10.1016/j.jdent.2015.10.013] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 10/14/2015] [Accepted: 10/16/2015] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVES The aim of this study was to determine the degree of conversion (DC) and the monomer release of three composite types when employed following a layer- and bulk-filling technique. METHODS The release of monomers from a 'conventional paste-like' (Filtek Z250), a 'conventional flowable' (Filtek Supreme XTE Flowable) and a 'bulk-fill' flowable composite (Filtek Bulk Fill Flowable) from the same manufacturer (3M ESPE, Seefeld, Germany) was determined. Ten cylindrical specimens per composite were built, either in two 2-mm layers or in one 4-mm bulk. DC was measured at the specimen top and bottom surface using micro-Raman spectroscopy, after which the specimens were immersed in 2 ml absolute ethanol for 24 h at 37 °C. This solution was refreshed weekly during six weeks and the concentration of BisGMA, BisEMA(6), BisPMA, UDMA, TEGDMA and BPA was determined by liquid chromatography/mass spectroscopy. RESULTS DC at the specimen top and bottom was similar except for the bulk-fill technique, which resulted in significantly lower DC at the specimen bottom. The release of BisGMA and TEGDMA was initially very high, but rapidly dropped in the second week. In contrast, the release of BisPMA and UDMA increased initially, but then declined towards the sixth week. BisEMA(6) release was relatively steady over time. All composites released small amounts of BPA. The total monomer release was significantly lower for the layer- than the bulk-filling technique. CONCLUSIONS The slightly reduced degree of conversion at 4-mm depth resulted in a higher monomer elution when the composite was applied following a bulk-fill application method. CLINICAL SIGNIFICANCE Applying a flowable and a bulk-fill composite following a bulk-fill application method resulted in a significantly reduced degree of conversion at the bottom of polymerized composite specimens when compared to a layer-application method. This reduced polymerization degree was reflected in significantly increased monomer release.
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Affiliation(s)
- Pong Pongprueksa
- KU Leuven BIOMAT, Department of Oral Health Sciences, KU Leuven (University of Leuven) & Dentistry, University Hospitals Leuven, Kapucijnenvoer 7, box 7001, 3000 Leuven, Belgium; Department of Operative Dentistry and Endodontics, Faculty of Dentistry, Mahidol University, No.6, Yothi road, Rajthawee, Bangkok 10400, Thailand
| | - Jan De Munck
- KU Leuven BIOMAT, Department of Oral Health Sciences, KU Leuven (University of Leuven) & Dentistry, University Hospitals Leuven, Kapucijnenvoer 7, box 7001, 3000 Leuven, Belgium
| | - Radu Corneliu Duca
- Centre for Environmental and Health, Department of Public Health and Primary Care, KU Leuven (University of Leuven), Kapucijnenvoer 35, 3000 Leuven, Belgium
| | - Katrien Poels
- Centre for Environmental and Health, Department of Public Health and Primary Care, KU Leuven (University of Leuven), Kapucijnenvoer 35, 3000 Leuven, Belgium
| | - Adrian Covaci
- Toxicological Center, University of Antwerp, Universiteitsplein 1, D.S.551, 2610 Wilrijk, Belgium
| | - Peter Hoet
- Centre for Environmental and Health, Department of Public Health and Primary Care, KU Leuven (University of Leuven), Kapucijnenvoer 35, 3000 Leuven, Belgium
| | - Lode Godderis
- Centre for Environmental and Health, Department of Public Health and Primary Care, KU Leuven (University of Leuven), Kapucijnenvoer 35, 3000 Leuven, Belgium
| | - Bart Van Meerbeek
- KU Leuven BIOMAT, Department of Oral Health Sciences, KU Leuven (University of Leuven) & Dentistry, University Hospitals Leuven, Kapucijnenvoer 7, box 7001, 3000 Leuven, Belgium
| | - Kirsten L Van Landuyt
- KU Leuven BIOMAT, Department of Oral Health Sciences, KU Leuven (University of Leuven) & Dentistry, University Hospitals Leuven, Kapucijnenvoer 7, box 7001, 3000 Leuven, Belgium.
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458
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La Rocca C, Tait S, Guerranti C, Busani L, Ciardo F, Bergamasco B, Perra G, Mancini FR, Marci R, Bordi G, Caserta D, Focardi S, Moscarini M, Mantovani A. Exposure to Endocrine Disruptors and Nuclear Receptors Gene Expression in Infertile and Fertile Men from Italian Areas with Different Environmental Features. Int J Environ Res Public Health 2015; 12:12426-45. [PMID: 26445054 PMCID: PMC4626977 DOI: 10.3390/ijerph121012426] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Revised: 09/23/2015] [Accepted: 09/28/2015] [Indexed: 12/12/2022]
Abstract
Internal levels of selected endocrine disruptors (EDs) (i.e., perfluorooctane sulfonate (PFOS), perfluorooctanoic acid (PFOA), di-2-ethylhexyl-phthalate (DEHP), mono-(2-ethylhexyl)-phthalate (MEHP), and bisphenol A (BPA)) were analyzed in blood/serum of infertile and fertile men from metropolitan, urban and rural Italian areas. PFOS and PFOA levels were also evaluated in seminal plasma. In peripheral blood mononuclear cells (PBMCs) of same subjects, gene expression levels of a panel of nuclear receptors (NRs), namely estrogen receptor α (ERα) estrogen receptor β (ERβ), androgen receptor (AR), aryl hydrocarbon receptor (AhR), peroxisome proliferator-activated receptor γ (PPARγ) and pregnane X receptor (PXR) were also assessed. Infertile men from the metropolitan area had significantly higher levels of BPA and gene expression of all NRs, except PPARγ, compared to subjects from other areas. Subjects from urban areas had significantly higher levels of MEHP, whereas subjects from rural area had higher levels of PFOA in both blood and seminal plasma. Interestingly, ERα, ERβ, AR, PXR and AhR expression is directly correlated with BPA and inversely correlated with PFOA serum levels. Our study indicates the relevance of the living environment when investigating the exposure to specific EDs. Moreover, the NRs panel in PBMCs demonstrated to be a potential biomarker of effect to assess the EDs impact on reproductive health.
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Affiliation(s)
- Cinzia La Rocca
- Department of Food Safety and Veterinary Public Health, Istituto Superiore di Sanità, Roma 00161, Italy.
| | - Sabrina Tait
- Department of Food Safety and Veterinary Public Health, Istituto Superiore di Sanità, Roma 00161, Italy.
| | - Cristiana Guerranti
- Department of Physical, Earth and Environmental Sciences, University of Siena, Siena 53100, Italy.
- Bioscience Research Center, Orbetello (GR) 58015, Italy.
| | - Luca Busani
- Department of Food Safety and Veterinary Public Health, Istituto Superiore di Sanità, Roma 00161, Italy.
| | - Francesca Ciardo
- Department of Obstetric and Gynecological Sciences and Urological Sciences, University of Roma Sapienza, S. Andrea Hospital, Roma 00189, Italy.
| | - Bruno Bergamasco
- Department of Food Safety and Veterinary Public Health, Istituto Superiore di Sanità, Roma 00161, Italy.
| | - Guido Perra
- Department of Physical, Earth and Environmental Sciences, University of Siena, Siena 53100, Italy.
| | - Francesca Romana Mancini
- Department of Food Safety and Veterinary Public Health, Istituto Superiore di Sanità, Roma 00161, Italy.
| | - Roberto Marci
- Department of Biomedical Sciences and Advanced Therapies, Section of Obstetrics and Gynaecology, University of Ferrara, Ferrara 44124, Italy.
| | - Giulia Bordi
- Department of Obstetric and Gynecological Sciences and Urological Sciences, University of Roma Sapienza, S. Andrea Hospital, Roma 00189, Italy.
| | - Donatella Caserta
- Department of Obstetric and Gynecological Sciences and Urological Sciences, University of Roma Sapienza, S. Andrea Hospital, Roma 00189, Italy.
| | - Silvano Focardi
- Department of Physical, Earth and Environmental Sciences, University of Siena, Siena 53100, Italy.
| | - Massimo Moscarini
- Department of Obstetric and Gynecological Sciences and Urological Sciences, University of Roma Sapienza, S. Andrea Hospital, Roma 00189, Italy.
| | - Alberto Mantovani
- Department of Food Safety and Veterinary Public Health, Istituto Superiore di Sanità, Roma 00161, Italy.
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459
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Wong RLY, Wang Q, Treviño LS, Bosland MC, Chen J, Medvedovic M, Prins GS, Kannan K, Ho SM, Walker CL. Identification of secretaglobin Scgb2a1 as a target for developmental reprogramming by BPA in the rat prostate. Epigenetics 2015; 10:127-34. [PMID: 25612011 DOI: 10.1080/15592294.2015.1009768] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Secretoglobins are a superfamily of secreted proteins thought to participate in inflammation, tissue repair, and tumorigenesis. Secretoglobin family 2A member 1 (Scgb2a1) is a component of prostatein, a major androgen-binding protein secreted by the rat prostate. Using a rat model for developmental reprogramming of susceptibility to prostate carcinogenesis, we identified, by RNA-seq, that Scgb2a1 is significantly upregulated (>100-fold) in the prostate of adult rats neonatally exposed to bisphenol A (BPA), with increased gene expression confirmed by quantitative RT-PCR and chromatin immunoprecipitation for histone H3 lysine 9 acetylation. Bisulfite analysis of both CpG islands located within 10 kb of the Scgb2a1 promoter identified significant hypomethylation of the CpG island upstream of the transcription start site of this gene in the reprogrammed prostate. These data suggest that expression of Scgb2a1 in the adult prostate could be epigenetically reprogrammed by BPA exposure during prostate development, with potential implications for cancer risk and response to chemotherapeutics associated with prostatein binding.
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Affiliation(s)
- Rebecca Lee Yean Wong
- a Center for Translational Cancer Research; Institute of Biosciences and Technology ; The Texas A&M University System Health Science Center ; Houston , TX USA
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Wang W, Abualnaja KO, Asimakopoulos AG, Covaci A, Gevao B, Johnson-Restrepo B, Kumosani TA, Malarvannan G, Minh TB, Moon HB, Nakata H, Sinha RK, Kannan K. A comparative assessment of human exposure to tetrabromobisphenol A and eight bisphenols including bisphenol A via indoor dust ingestion in twelve countries. Environ Int 2015; 83:183-91. [PMID: 26177148 DOI: 10.1016/j.envint.2015.06.015] [Citation(s) in RCA: 184] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Revised: 06/22/2015] [Accepted: 06/25/2015] [Indexed: 05/22/2023]
Abstract
Tetrabromobisphenol A (TBBPA) and eight bisphenol analogues (BPs) including bisphenol A (BPA) were determined in 388 indoor (including homes and microenvironments) dust samples collected from 12 countries (China, Colombia, Greece, India, Japan, Kuwait, Pakistan, Romania, Saudi Arabia, South Korea, U.S., and Vietnam). The concentrations of TBBPA and sum of eight bisphenols (ƩBPs) in dust samples ranged from <1 to 3600 and from 13 to 110,000 ng/g, respectively. The highest TBBPA concentrations in house dust were found in samples from Japan (median: 140 ng/g), followed by South Korea (84 ng/g) and China (23 ng/g). The highest ∑BPs concentrations were found in Greece (median: 3900 ng/g), Japan (2600 ng/g) and the U.S. (2200 ng/g). Significant variations in BPA concentrations were found in dust samples collected from various microenvironments in offices and homes. Concentrations of TBBPA in house dust were significantly correlated with BPA and ∑BPs. Among the nine target chemicals analyzed, BPA was the predominant compound in dust from all countries. The proportion of TBBPA in sum concentrations of nine phenolic compounds analyzed in this study was the highest in dust samples from China (27%) and the lowest in Greece (0.41%). The median estimated daily intake (EDI) of ∑BPs through dust ingestion was the highest in Greece (1.6-17 ng/kg bw/day), Japan (1.3-16) and the U.S. (0.89-9.6) for various age groups. Nevertheless, in comparison with the reported BPA exposure doses through diet, dust ingestion accounted for less than 10% of the total exposure doses in China and the U.S. For TBBPA, the EDI for infants and toddlers ranged from 0.01 to 3.4 ng/kg bw/day, and dust ingestion is an important pathway for exposure accounting for 3.8-35% (median) of exposure doses in China.
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Affiliation(s)
- Wei Wang
- Wadsworth Center, New York State Department of Health, Department of Environmental Health Sciences, School of Public Health, State University of New York at Albany, Empire State Plaza, P.O. Box 509, Albany, NY 12201-0509, United States
| | - Khalid O Abualnaja
- Biochemistry Department, Faculty of Science, Experimental Biochemistry Unit, King Fahd Medical Research Center, Bioactive Natural Products Research Group, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Alexandros G Asimakopoulos
- Wadsworth Center, New York State Department of Health, Department of Environmental Health Sciences, School of Public Health, State University of New York at Albany, Empire State Plaza, P.O. Box 509, Albany, NY 12201-0509, United States
| | - Adrian Covaci
- Toxicological Center, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk-Antwerp, Belgium
| | - Bondi Gevao
- Environmental Management Program, Environment and Life Sciences Center, Kuwait Institute for Scientific Research, P.O. Box 24885, Safat, 13109, Kuwait
| | - Boris Johnson-Restrepo
- Environmental and Chemistry Group, Sede San Pablo, University of Cartagena, Cartagena, Bolívar 130015, Colombia
| | - Taha A Kumosani
- Biochemistry Department, Faculty of Science, Experimental Biochemistry Unit, King Fahd Medical Research Center, Bioactive Natural Products Research Group, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Govindan Malarvannan
- Toxicological Center, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk-Antwerp, Belgium
| | - Tu Binh Minh
- Faculty of Chemistry, Hanoi University of Science, Vietnam National University, Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi, Viet Nam
| | - Hyo-Bang Moon
- Department of Marine Sciences and Convergent Technology, College of Science and Technology, Hanyang University, Ansan, South Korea
| | - Haruhiko Nakata
- Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan
| | | | - Kurunthachalam Kannan
- Wadsworth Center, New York State Department of Health, Department of Environmental Health Sciences, School of Public Health, State University of New York at Albany, Empire State Plaza, P.O. Box 509, Albany, NY 12201-0509, United States; Biochemistry Department, Faculty of Science, Experimental Biochemistry Unit, King Fahd Medical Research Center, Bioactive Natural Products Research Group, King Abdulaziz University, Jeddah, Saudi Arabia.
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Johnson SA, Painter MS, Javurek AB, Ellersieck MR, Wiedmeyer CE, Thyfault JP, Rosenfeld CS. Sex-dependent effects of developmental exposure to bisphenol A and ethinyl estradiol on metabolic parameters and voluntary physical activity. J Dev Orig Health Dis 2015; 6:539-52. [PMID: 26378919 DOI: 10.1017/S2040174415001488] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Endocrine disrupting chemicals (EDC) have received considerable attention as potential obesogens. Past studies examining obesogenic potential of one widespread EDC, bisphenol A (BPA), have generally focused on metabolic and adipose tissue effects. However, physical inactivity has been proposed to be a leading cause of obesity. A paucity of studies has considered whether EDC, including BPA, affects this behavior. To test whether early exposure to BPA and ethinyl estradiol (EE, estrogen present in birth control pills) results in metabolic and such behavioral disruptions, California mice developmentally exposed to BPA and EE were tested as adults for energy expenditure (indirect calorimetry), body composition (echoMRI) and physical activity (measured by beam breaks and voluntary wheel running). Serum glucose and metabolic hormones were measured. No differences in body weight or food consumption were detected. BPA-exposed females exhibited greater variation in weight than females in control and EE groups. During the dark and light cycles, BPA females exhibited a higher average respiratory quotient than control females, indicative of metabolizing carbohydrates rather than fats. Various assessments of voluntary physical activity in the home cage confirmed that during the dark cycle, BPA and EE-exposed females were significantly less active in this setting than control females. Similar effects were not observed in BPA or EE-exposed males. No significant differences were detected in serum glucose, insulin, adiponectin and leptin concentrations. Results suggest that females developmentally exposed to BPA exhibit decreased motivation to engage in voluntary physical activity and altered metabolism of carbohydrates v. fats, which could have important health implications.
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462
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Song H, Zhang T, Yang P, Li M, Yang Y, Wang Y, Du J, Pan K, Zhang K. Low doses of bisphenol A stimulate the proliferation of breast cancer cells via ERK1/2/ERRγ signals. Toxicol In Vitro 2015; 30:521-8. [PMID: 26363202 DOI: 10.1016/j.tiv.2015.09.009] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 08/21/2015] [Accepted: 09/07/2015] [Indexed: 12/20/2022]
Abstract
The effects and mechanisms of bisphenol A (BPA) on the development of breast cancer are still not well illustrated. The present study revealed that nanomolar BPA significantly promoted the proliferation of both estrogen receptor (ER) positive (MCF-7) and negative (SkBr3) breast cancer cells, which was confirmed by up regulation of proliferating cell nuclear antigen (PCNA) and Bcl-2. Neither ERα nor G-protein-coupled estrogen receptor (GPER) mediated this effect of BPA because their inhibitors had no effect on the BPA induced cell proliferation. However, silencing of estrogen related receptor gamma (ERRγ) by its specific siRNA significantly abolished BPA induced proliferation of breast cancer cells, while si-ERRα had no similar effect. Moreover, nanomolar BPA up regulated the mRNA and protein levels of ERRγ and triggered its nuclear translocation via a time dependent manner. Further studies revealed that 10(-8)M BPA obviously increased the phosphorylation of ERK1/2, while had no similar effect on the phosphorylation of JNK and p38 MAPK. Further, PD 98059, the inhibitor of ERK1/2, significantly abolished the BPA induced up regulation of ERRγ and proliferation of breast cancer cells. Collectively, our results revealed that nanomolar BPA can trigger the proliferation of breast cancer cells via ERK1/2/ERRγ signals. Given that nanomolar BPA has been widely detected in human tissues, the clinical relevance of BPA and breast cancer progression should be further investigated.
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Affiliation(s)
- Haixing Song
- School of Biomedicine Sciences, Chengdu Medical College, Chengdu, China
| | - Tao Zhang
- School of Biomedicine Sciences, Chengdu Medical College, Chengdu, China
| | - Ping Yang
- School of Basic Medical Sciences, Chengdu Medical College, Chengdu, China
| | - Minhui Li
- Center of Science and Research, Chengdu Medical College, Chengdu, China
| | - Yuhan Yang
- School of Biomedicine Sciences, Chengdu Medical College, Chengdu, China
| | - Yuanyuan Wang
- School of Biomedicine Sciences, Chengdu Medical College, Chengdu, China
| | - Jun Du
- Department of Microbial and Biochemical Pharmacy, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Kejian Pan
- School of Biomedicine Sciences, Chengdu Medical College, Chengdu, China.
| | - Kun Zhang
- School of Biomedicine Sciences, Chengdu Medical College, Chengdu, China.
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463
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Kendziorski JA, Belcher SM. Strain-specific induction of endometrial periglandular fibrosis in mice exposed during adulthood to the endocrine disrupting chemical bisphenol A. Reprod Toxicol 2015; 58:119-30. [PMID: 26307436 DOI: 10.1016/j.reprotox.2015.08.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2015] [Revised: 08/01/2015] [Accepted: 08/17/2015] [Indexed: 11/17/2022]
Abstract
The aim of this study was to compare effects of bisphenol A (BPA) on collagen accumulation in uteri of two mouse strains. Adult C57Bl/6N and CD-1 mice were exposed to dietary BPA (0.004-40mg/kg/day) or 17α-ethinyl estradiol (0.00002-0.001mg/kg/day) as effect control. An equine endometrosis-like phenotype with increased gland nesting and periglandular collagen accumulation was characteristic of unexposed C57Bl/6N, but not CD-1, endometrium. BPA non-monotonically increased gland nest density and periglandular collagen accumulation in both strains. Increased collagen I and III expression, decreased matrix metalloproteinase 2 (MMP2) and MMP14 expression, and increased immune response were associated with the endometrosis phenotype in the C57Bl/6N strain and the 30ppm BPA CD-1 group. The association between the pro-collagen shift in increased collagen expression and decreased MMP2 expression and activity implies that strain differences and BPA exposure alter regulation of endometrial remodeling and contribute to increased fibrosis, a component of several human uterine diseases.
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Affiliation(s)
- Jessica A Kendziorski
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, OH 45267-0575, USA
| | - Scott M Belcher
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, OH 45267-0575, USA.
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464
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Koivunoro H, Hippeläinen E, Auterinen I, Kankaanranta L, Kulvik M, Laakso J, Seppälä T, Savolainen S, Joensuu H. Biokinetic analysis of tissue boron (¹⁰B) concentrations of glioma patients treated with BNCT in Finland. Appl Radiat Isot 2015; 106:189-94. [PMID: 26363564 DOI: 10.1016/j.apradiso.2015.08.014] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2015] [Revised: 08/13/2015] [Accepted: 08/13/2015] [Indexed: 11/17/2022]
Abstract
A total of 98 patients with glioma were treated with BPA-F-mediated boron neutron capture therapy (BNCT) in Finland from 1999 to 2011. Thirty-nine (40%) had undergone surgery for newly diagnosed glioblastoma and 59 (60%) had malignant glioma recurrence after surgery. In this study we applied a closed 3-compartment model based on dynamic (18)F-BPA-PET studies to estimate the BPA-F concentrations in the tumor and the normal brain with time. Altogether 22 patients with recurrent glioma, treated within the context of a clinical trial, were evaluated using their individual measured whole blood (10)B concentrations as an input to the model. The delivered radiation doses to tumor and the normal brain were recalculated based on the modeled (10)B concentrations in the tissues during neutron irradiation. The model predicts from -7% to +29% (average, +11%) change in the average tumor doses as compared with the previously estimated doses, and from 17% to 61% (average, 36%) higher average normal brain doses than previously estimated due to the non-constant tumor-to-blood concentration ratios and considerably higher estimated (10)B concentrations in the brain at the time of neutron irradiation.
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Affiliation(s)
- H Koivunoro
- HUS Helsinki Medical Imaging Center, Helsinki University Hospital, Finland; Department of Physics, University of Helsinki, POB 64, FI-00014, Finland.
| | - E Hippeläinen
- HUS Helsinki Medical Imaging Center, Helsinki University Hospital, Finland
| | - I Auterinen
- VTT Technical Research Centre of Finland, Espoo, Finland
| | - L Kankaanranta
- Department of Oncology, Comprehensive Cancer Center, Helsinki University Hospital, and University of Helsinki, Helsinki, Finland
| | - M Kulvik
- Department of Neurology, Helsinki University Hospital, Helsinki, Finland
| | - J Laakso
- Finnish Safety and Chemicals Agency (Tukes), Finland
| | - T Seppälä
- Department of Oncology, Comprehensive Cancer Center, Helsinki University Hospital, and University of Helsinki, Helsinki, Finland
| | - S Savolainen
- HUS Helsinki Medical Imaging Center, Helsinki University Hospital, Finland; Department of Physics, University of Helsinki, POB 64, FI-00014, Finland
| | - H Joensuu
- Department of Oncology, Comprehensive Cancer Center, Helsinki University Hospital, and University of Helsinki, Helsinki, Finland
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465
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Mathieu-Denoncourt J, Wallace SJ, de Solla SR, Langlois VS. Plasticizer endocrine disruption: Highlighting developmental and reproductive effects in mammals and non-mammalian aquatic species. Gen Comp Endocrinol 2015; 219:74-88. [PMID: 25448254 DOI: 10.1016/j.ygcen.2014.11.003] [Citation(s) in RCA: 161] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 10/30/2014] [Accepted: 11/03/2014] [Indexed: 10/24/2022]
Abstract
Due to their versatility, robustness, and low production costs, plastics are used in a wide variety of applications. Plasticizers are mixed with polymers to increase flexibility of plastics. However, plasticizers are not covalently bound to plastics, and thus leach from products into the environment. Several studies have reported that two common plasticizers, bisphenol A (BPA) and phthalates, induce adverse health effects in vertebrates; however few studies have addressed their toxicity to non-mammalian species. The aim of this review is to compare the effects of plasticizers in animals, with a focus on aquatic species. In summary, we identified three main chains of events that occur in animals exposed to BPA and phthalates. Firstly, plasticizers affect development by altering both the thyroid hormone and growth hormone axes. Secondly, these chemicals interfere with reproduction by decreasing cholesterol transport through the mitochondrial membrane, leading to reduced steroidogenesis. Lastly, exposure to plasticizers leads to the activation of peroxisome proliferator-activated receptors, the increase of fatty acid oxidation, and the reduction in the ability to cope with the augmented oxidative stress leading to reproductive organ malformations, reproductive defects, and decreased fertility.
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Affiliation(s)
- Justine Mathieu-Denoncourt
- Chemistry and Chemical Engineering Department, Royal Military College of Canada, Kingston, ON K7K 7B4, Canada
| | - Sarah J Wallace
- Chemistry and Chemical Engineering Department, Royal Military College of Canada, Kingston, ON K7K 7B4, Canada
| | - Shane R de Solla
- Wildlife and Landscape Science Directorate, Environment Canada, Burlington, ON L7R 4A6, Canada
| | - Valerie S Langlois
- Chemistry and Chemical Engineering Department, Royal Military College of Canada, Kingston, ON K7K 7B4, Canada.
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466
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Zhang C, Li M, Chen X, Li M. Edible fungus degrade bisphenol A with no harmful effect on its fatty acid composition. Ecotoxicol Environ Saf 2015; 118:126-132. [PMID: 25933259 DOI: 10.1016/j.ecoenv.2015.04.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 04/16/2015] [Accepted: 04/17/2015] [Indexed: 06/04/2023]
Abstract
Bisphenol A (BPA) is an endocrine-disrupting chemical that is ubiquitous in the environment because of its broad industrial use. The authors report that the most widely cultivated mushroom in the world (i.e., white-rot fungus, Pleurotus ostreatus) efficiently degraded 10mg/L of BPA in 7 days. Extracellular laccase was identified as the enzyme responsible for this activity. LC-MS analysis of the metabolites revealed the presence of both low- and high-molecular-weight products obtained via oxidative cleavage and coupling reactions, respectively. In particular, an analysis of the fatty acid composition and chemical structure of the fungal mycelium demonstrated that exposure to BPA resulted in no harmful effects on this edible fungus. The results provide a better understanding of the environmental fate of BPA and its potential impact on food crops.
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Affiliation(s)
- Chengdong Zhang
- Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control and College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China.
| | - Mingzhu Li
- Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control and College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China
| | - Xiaoyan Chen
- Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control and College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China
| | - Mingchun Li
- Department of Microbiology, College of Life Science, Nankai University, Tianjin 300071, China.
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467
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Rebuli ME, Camacho L, Adonay ME, Reif DM, Aylor DL, Patisaul HB. Impact of Low-Dose Oral Exposure to Bisphenol A ( BPA) on Juvenile and Adult Rat Exploratory and Anxiety Behavior: A CLARITY-BPA Consortium Study. Toxicol Sci 2015. [PMID: 26209558 DOI: 10.1093/toxsci/kfv163] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Bisphenol A (BPA) is a high volume production chemical and has been identified as an endocrine disruptor, prompting concern that developmental exposure could impact brain development and behavior. Rodent and human studies suggest that early life BPA exposure may result in an anxious, hyperactive phenotype but results are conflicting and data from studies using multiple doses below the no-observed-adverse-effect level are limited. To address this, the present studies were conducted as part of the CLARITY-BPA (Consortium Linking Academic and Regulatory Insights on BPA Toxicity) program. The impact of perinatal BPA exposure (2.5, 25, or 2500 µg/kg body weight (bw)/day) on behaviors related to anxiety and exploratory activity was assessed in juvenile (prepubertal) and adult NCTR Sprague-Dawley rats of both sexes. Ethinyl estradiol (0.5 µg/kg bw/day) was used as a reference estrogen. Exposure spanned gestation and lactation with dams gavaged from gestational day 6 until birth and then the offspring gavaged directly through weaning (n = 12/sex/group). Behavioral assessments included open field, elevated plus maze, and zero maze. Anticipated sex differences in behavior were statistically identified or suggested in most cases. No consistent effects of BPA were observed for any endpoint, in either sex, at either age compared to vehicle controls; however, significant differences between BPA-exposed and ethinyl estradiol-exposed groups were identified for some endpoints. Limitations of this study are discussed and include suboptimal statistical power and low concordance across behavioral tasks. These data do not indicate BPA-related effects on anxiety or exploratory activity in these developmentally exposed rats.
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Affiliation(s)
- Meghan E Rebuli
- *Department of Biological Sciences, North Carolina State University, Raleigh, North Carolina 27695; Keck Center for Behavioral Biology, North Carolina State University, Raleigh, North Carolina 27695
| | - Luísa Camacho
- National Center for Toxicological Research, Jefferson, Arkansas 72079; and
| | - Maria E Adonay
- Bioinformatics Research Center, North Carolina State University, Raleigh, North Carolina 27695
| | - David M Reif
- *Department of Biological Sciences, North Carolina State University, Raleigh, North Carolina 27695; Bioinformatics Research Center, North Carolina State University, Raleigh, North Carolina 27695
| | - David L Aylor
- *Department of Biological Sciences, North Carolina State University, Raleigh, North Carolina 27695; Bioinformatics Research Center, North Carolina State University, Raleigh, North Carolina 27695
| | - Heather B Patisaul
- *Department of Biological Sciences, North Carolina State University, Raleigh, North Carolina 27695; Keck Center for Behavioral Biology, North Carolina State University, Raleigh, North Carolina 27695;
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Abstract
Research on bisphenol A (BPA) as an environmental contaminant has now major regulatory implications toward the ecosystem health, and hence it is incumbent on scientists to do their research to the highest standards possible, in order that the most appropriate decisions are made to mitigate the impacts to aquatic wildlife. However, the contribution given so far appears rather fragmented. The present overview aims to collect available information on the effects of BPA on aquatic vertebrates and invertebrates to provide a general scenario and to suggest future developments toward more comprehensive approaches useful for aquatic species protection.
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Affiliation(s)
- Laura Canesi
- Department of Earth, Environment and Life Sciences, University of Genoa, Genova, Italy
| | - Elena Fabbri
- Department of Biological, Geological and Environmental Sciences, University of Bologna, Campus of Ravenna, Ravenna, Italy
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469
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Zhou R, Chen F, Feng X, Zhou L, Li Y, Chen L. Perinatal exposure to low-dose of bisphenol A causes anxiety-like alteration in adrenal axis regulation and behaviors of rat offspring: a potential role for metabotropic glutamate 2/3 receptors. J Psychiatr Res 2015; 64:121-9. [PMID: 25812946 DOI: 10.1016/j.jpsychires.2015.02.018] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Revised: 01/07/2015] [Accepted: 02/23/2015] [Indexed: 10/23/2022]
Abstract
AIMS The present study focuses on detecting anxiety-like behavior and associated neurochemical alterations in adolescent rats exposed perinatally to bisphenol A (BPA), an estrogen-mimicking endocrine disrupter and investigating the possible involvement of metabotropic glutamate 2/3 receptors (mGlu2/3 receptors) in BPA-induced anxiogenic effects. METHODS AND RESULTS When female breeders were administered orally with BPA (40 μg/kg/d) during pregnancy and lactation, their pups (here named 'BPA-exposed offspring') developed an anxiety-like phenotype, characterized by the hyperactivity of the hypothalamic-pituitary-adrenal (HPA) axis, impaired glucocorticoid receptor (GR)-mediated negative feedback regulation of the HPA axis, altered hippocampal synaptic plasticity and increased anxiety-like behaviors. BPA-exposed offspring also showed a reduced expression of mGlu2/3 receptors in the hippocampus. BPA-exposed offspring further subjected to systemic administration of mGlu2/3 receptor agonist (LY379268, 0.5 mg/kg, i.p.) or antagonist (LY341495, 1.5 mg/kg, i.p.) twice per day for 6 days. The results indicated that chronic LY379268 treatment corrected the anxiety-like behaviors and associated neurochemical and endocrinological alterations in BPA-exposed offspring. CONCLUSION Our data demonstrate for the first time that the perinatal BPA exposure induces an anxiety-like phenotype in behaviors and -related neuroendocrinology, and suggest that the changes in mGlu2/3 receptor might lie at the core of the pathological reprogramming triggered by early-life adversity. mGlu2/3 receptor may serve as a novel biomarker and potential therapeutic target for anxiety disorders associated with adverse early-life agents including perinatal BPA exposure.
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Affiliation(s)
- Rong Zhou
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing 210029, China
| | - Fang Chen
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing 210029, China
| | - Xuejiao Feng
- Department of Physiology, Nanjing Medical University, Nanjing 210029, China
| | - Libin Zhou
- Department of Physiology, Nanjing Medical University, Nanjing 210029, China
| | - Yingchun Li
- Department of Physiology, Nanjing Medical University, Nanjing 210029, China
| | - Ling Chen
- Department of Physiology, Nanjing Medical University, Nanjing 210029, China.
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470
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Fasano E, Esposito F, Scognamiglio G, Di Francesco F, Montuori P, Amodio Cocchieri R, Cirillo T. Bisphenol A contamination in soft drinks as a risk for children's health in Italy. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2015; 32:1207-14. [PMID: 25905576 DOI: 10.1080/19440049.2015.1031713] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Bisphenol A (BPA) was determined in sugary carbonated, non-carbonated and milk-based beverages, through HLPC-fluorescence detection and confirmed by LC-MS/MS, in a selection of brands that are mostly consumed by Italian children. The daily intake was determined through the WHO budget method (BM). BPA was found at detectable levels in 57% of carbonated beverages, in 50% of non-carbonated and in 100% of milk-based beverages. The median concentrations were 1.24 µg l(-1) (range = < LOD-4.98 µg l(-1)) in canned carbonated beverages and 0.18 µg l(-1) (< LOD-1.78 µg l(-1)) in non-canned carbonated beverages. In non-carbonated beverages, median concentrations were 0.80 µg l(-1) (< LOD-2.79 µg l(-1)) and 0.18 µg l(-1) (< LOD-3.58 µg l(-1)), respectively, for canned and non-canned beverages; in milk-based products the BPA median concentration was 3.60 µg l(-1) (1.00-17.65 µg l(-1)). BPA daily intake from sugary drink consumption in children ranged from 0.008 to 1.765 µg kg(-1) bw day(-1). The median exposure values for the 'best' and 'worst' cases were 0.16% and 0.47% respectively of the EFSA t-TDI for BPA (4 µg kg(-1) bw day(-1)), and 10.59% and 35.30% of the t-TDI when the maximum levels were considered.
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Affiliation(s)
- Evelina Fasano
- a Department of Agriculture , 'Federico II' University of Naples, Via Università , Portici, Naples , Italy
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471
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Libbrecht W, Vandaele K, De Buysser K, Verberckmoes A, Thybaut JW, Poelman H, De Clercq J, Van Der Voort P. Tuning the Pore Geometry of Ordered Mesoporous Carbons for Enhanced Adsorption of Bisphenol-A. Materials (Basel) 2015; 8:1652-1665. [PMID: 28788023 PMCID: PMC5507042 DOI: 10.3390/ma8041652] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 03/26/2015] [Accepted: 03/31/2015] [Indexed: 11/24/2022]
Abstract
Mesoporous carbons were synthesized via both soft and hard template methods and compared to a commercial powder activated carbon (PAC) for the adsorption ability of bisphenol-A (BPA) from an aqueous solution. The commercial PAC had a BET-surface of 1027 m²/g with fine pores of 3 nm and less. The hard templated carbon (CMK-3) material had an even higher BET-surface of 1420 m²/g with an average pore size of 4 nm. The soft templated carbon (SMC) reached a BET-surface of 476 m²/g and a pore size of 7 nm. The maximum observed adsorption capacity (qmax) of CMK-3 was the highest with 474 mg/g, compared to 290 mg/g for PAC and 154 mg/g for SMC. The difference in adsorption capacities was attributed to the specific surface area and hydrophobicity of the adsorbent. The microporous PAC showed the slowest adsorption, while the ordered mesopores of SMC and CMK-3 enhanced the BPA diffusion into the adsorbent. This difference in adsorption kinetics is caused by the increase in pore diameter. However, CMK-3 with an open geometry consisting of interlinked nanorods allows for even faster intraparticle diffusion.
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Affiliation(s)
- Wannes Libbrecht
- Industrial Catalysis and Adsorption Technology (INCAT), Department of Industrial Technology and Construction, Faculty of Engineering and Architecture, Ghent University, Valentin Vaerwyckweg 1, Ghent 9000, Belgium.
- Laboratory for Chemical Technology, Faculty of Engineering and Architecture, Ghent University, Technologiepark 914, Ghent 9052, Belgium.
- Center for Ordered Materials, Organometallics and Catalysis (COMOC), Department of Inorganic and Physical Chemistry, Ghent University, Krijgslaan 281-S3, Ghent 9000, Belgium.
| | - Koen Vandaele
- Center for Ordered Materials, Organometallics and Catalysis (COMOC), Department of Inorganic and Physical Chemistry, Ghent University, Krijgslaan 281-S3, Ghent 9000, Belgium.
- Sol-gel Centre for Research on Inorganic Powders and Thin films Synthesis (SCRiPTS), Department of Inorganic and Physical Chemistry, Ghent University, Krijgslaan 281-S3, Ghent 9000, Belgium.
| | - Klaartje De Buysser
- Sol-gel Centre for Research on Inorganic Powders and Thin films Synthesis (SCRiPTS), Department of Inorganic and Physical Chemistry, Ghent University, Krijgslaan 281-S3, Ghent 9000, Belgium.
| | - An Verberckmoes
- Industrial Catalysis and Adsorption Technology (INCAT), Department of Industrial Technology and Construction, Faculty of Engineering and Architecture, Ghent University, Valentin Vaerwyckweg 1, Ghent 9000, Belgium.
| | - Joris W Thybaut
- Laboratory for Chemical Technology, Faculty of Engineering and Architecture, Ghent University, Technologiepark 914, Ghent 9052, Belgium.
| | - Hilde Poelman
- Laboratory for Chemical Technology, Faculty of Engineering and Architecture, Ghent University, Technologiepark 914, Ghent 9052, Belgium.
| | - Jeriffa De Clercq
- Industrial Catalysis and Adsorption Technology (INCAT), Department of Industrial Technology and Construction, Faculty of Engineering and Architecture, Ghent University, Valentin Vaerwyckweg 1, Ghent 9000, Belgium.
| | - Pascal Van Der Voort
- Center for Ordered Materials, Organometallics and Catalysis (COMOC), Department of Inorganic and Physical Chemistry, Ghent University, Krijgslaan 281-S3, Ghent 9000, Belgium.
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472
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Bhandari RK, Deem SL, Holliday DK, Jandegian CM, Kassotis CD, Nagel SC, Tillitt DE, Vom Saal FS, Rosenfeld CS. Effects of the environmental estrogenic contaminants bisphenol A and 17α-ethinyl estradiol on sexual development and adult behaviors in aquatic wildlife species. Gen Comp Endocrinol 2015; 214:195-219. [PMID: 25277515 DOI: 10.1016/j.ygcen.2014.09.014] [Citation(s) in RCA: 167] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2014] [Revised: 08/08/2014] [Accepted: 09/20/2014] [Indexed: 12/12/2022]
Abstract
Endocrine disrupting chemicals (EDCs), including the mass-produced component of plastics, bisphenol A (BPA) are widely prevalent in aquatic and terrestrial habitats. Many aquatic species, such as fish, amphibians, aquatic reptiles and mammals, are exposed daily to high concentrations of BPA and ethinyl estradiol (EE2), estrogen in birth control pills. In this review, we will predominantly focus on BPA and EE2, well-described estrogenic EDCs. First, the evidence that BPA and EE2 are detectable in almost all bodies of water will be discussed. We will consider how BPA affects sexual and neural development in these species, as these effects have been the best characterized across taxa. For instance, such chemicals have been in many cases reported to cause sex-reversal of males to females. Even if these chemicals do not overtly alter the gonadal sex, there are indications that several EDCs might demasculinize male-specific behaviors that are essential for attracting a mate. In so doing, these chemicals may reduce the likelihood that these males reproduce. If exposed males do reproduce, the concern is that they will then be passing on compromised genetic fitness to their offspring and transmitting potential transgenerational effects through their sperm epigenome. We will thus consider how diverse epigenetic changes might be a unifying mechanism of how BPA and EE2 disrupt several processes across species. Such changes might also serve as universal species diagnostic biomarkers of BPA and other EDCs exposure. Lastly, the evidence that estrogenic EDCs-induced effects in aquatic species might translate to humans will be considered.
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Affiliation(s)
- Ramji K Bhandari
- Biological Sciences, University of Missouri, Columbia, MO 65211, USA; Columbia Environmental Research Center, U.S. Geological Survey, Columbia, MO 65201, USA
| | - Sharon L Deem
- Institute for Conservation Medicine, Saint Louis Zoo, Saint Louis, MO 63110, USA; Veterinary Clinical Medicine, University of Missouri, Columbia, MO 65211, USA
| | - Dawn K Holliday
- Department of Biology and Environmental Science, Westminster College, Fulton, MO 65251, USA; Department of Pathology and Anatomical Sciences, University of Missouri, Columbia, MO 65211, USA
| | - Caitlin M Jandegian
- Columbia Environmental Research Center, U.S. Geological Survey, Columbia, MO 65201, USA; Institute for Conservation Medicine, Saint Louis Zoo, Saint Louis, MO 63110, USA; Masters in Public Health Program, University of Missouri, Columbia, MO 65211, USA
| | | | - Susan C Nagel
- Biological Sciences, University of Missouri, Columbia, MO 65211, USA; Obstetrics, Gynecology, & Women's Health, University of Missouri, Columbia, MO 65211, USA
| | - Donald E Tillitt
- Columbia Environmental Research Center, U.S. Geological Survey, Columbia, MO 65201, USA
| | | | - Cheryl S Rosenfeld
- Biomedical Sciences, University of Missouri, Columbia, MO 65211, USA; Bond Life Sciences Center, University of Missouri, Columbia, MO 65211, USA; Genetics Area Program Faculty Member, University of Missouri, Columbia, MO 65211, USA.
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473
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Lorber M, Schecter A, Paepke O, Shropshire W, Christensen K, Birnbaum L. Exposure assessment of adult intake of bisphenol A ( BPA) with emphasis on canned food dietary exposures. Environ Int 2015; 77:55-62. [PMID: 25645382 PMCID: PMC4469126 DOI: 10.1016/j.envint.2015.01.008] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 01/13/2015] [Accepted: 01/16/2015] [Indexed: 05/02/2023]
Abstract
Bisphenol A (BPA) is a high-volume, synthetic compound found in epoxy resins and plastics used in food packaging. Food is believed to be a major source of BPA intake. In this study, we measured the concentration of BPA in convenience samplings of foodstuffs purchased in Dallas, Texas. Sampling entailed collection of 204 samples of fresh, frozen, and canned foods in two rounds in 2010. BPA was positive in 73% of the canned food samples, while it was found in only 7% of non-canned foods at low concentrations. The results of this food sampling program were used to calculate adult dietary intakes of BPA. A pathway approach combined food intakes, a "canned fraction" parameter which described what portion of total intake of that food came from canned products, and measured food concentrations. Dietary intakes were calculated as 12.6 ng/kg-day, of which 12.4 ng/kg-day was from canned foods. Canned vegetable intakes alone were 11.9 ng/kg-day. This dietary intake was compared to total intakes of BPA estimated from urine measurements of the National Health and Nutrition Examination Survey (NHANES). Total adult central tendency intakes ranged from 30 to 70 ng/kg-day for NHANES cycles between 2005 and 2010. Three possibilities were explored to explain the difference between these two approaches for intake estimation. Not all foods which may have been canned, particularly canned beverages such as soft drinks, were sampled in our food sampling program. Second, non-food pathways of exposure may be important for adults, including thermal paper exposures, and dust and air exposures. Finally, our canned food concentrations may not be adequately representative of canned foods in the United States; they were found to be generally lower compared to canned food concentrations measured in six other worldwide food surveys including three in North America. Our finding that canned food concentrations greatly exceeded non-canned concentrations was consistent with other studies, and underscores the importance of canned foods in the overall exposure of adults of BPA.
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Affiliation(s)
- Matthew Lorber
- National Center for Environmental Assessment, US Environmental Protection Agency, Washington, DC, USA.
| | - Arnold Schecter
- Dept of Pharmacology and Toxicology, University of Louisville, 2363 Valleta Lane, Louisville, KY, USA
| | | | - William Shropshire
- Environmental and Occupational Health Sciences Program, University of Texas School of Public Health, Dallas, TX, USA
| | - Krista Christensen
- Wisconsin Division of Public Health, Bureau of Environmental and Occupational Health, 1 West Wilson Street, Room 145, Madison, WI, USA
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474
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Birceanu O, Servos MR, Vijayan MM. Bisphenol A accumulation in eggs disrupts the endocrine regulation of growth in rainbow trout larvae. Aquat Toxicol 2015; 161:51-60. [PMID: 25667994 DOI: 10.1016/j.aquatox.2015.01.028] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Revised: 01/21/2015] [Accepted: 01/28/2015] [Indexed: 06/04/2023]
Abstract
Bisphenol A (BPA), a monomer used in the production of plastics and epoxy resins, is ubiquitously present in the aquatic environment. BPA is considered a weak estrogen in fish, but the effects of this chemical on early developmental events are far from clear. We tested the hypothesis that BPA accumulation in eggs, mimicking maternal transfer, disrupts growth hormone/insulin-like growth factor (GH/IGF) axis function, leading to defects in larval growth in rainbow trout. Trout oocytes were exposed to 0 (control), 0.3, 3, and 30 μg ml(-1) BPA for 3h, which led to an accumulation of around 0, 1, 4 and 40 ng BPA per egg, respectively. All treatment groups were fertilized with clean milt and reared in clean water for the rest of the experiment. The embryo BPA content declined over time in all groups and was completely eliminated by 42 days post-fertilization (dpf). Hatchlings from BPA accumulated eggs had higher water content and reduced total energy levels prior to first feed. There was an overall reduction in the specific growth rate and food conversion ratio in larvae reared from BPA-laden eggs. BPA accumulation disrupted the mRNA abundance of genes involved in GH/IGF axis function, including GH isoforms and their receptors, IGF-1 and -2 and IGF receptors, in a life stage-dependent manner. Also, there was a temporal disruption in the mRNA levels of thyroid hormone receptors in the larvae raised from BPA-laden eggs. Altogether, BPA accumulation in eggs, mimicking maternal transfer, affects larval growth and the mode of action involves disruption of genes involved in the GH/IGF and thyroid axes function in trout.
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Affiliation(s)
- Oana Birceanu
- Department of Biology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Mark R Servos
- Department of Biology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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475
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Ma XF, Zhang J, Shuai HL, Guan BZ, Luo X, Yan RL. IKKβ/NF-κB mediated the low doses of bisphenol A induced migration of cervical cancer cells. Arch Biochem Biophys 2015; 573:52-8. [PMID: 25797437 DOI: 10.1016/j.abb.2015.03.010] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 02/22/2015] [Accepted: 03/12/2015] [Indexed: 01/04/2023]
Abstract
Cervical cancer is considered as the second most common female malignant disease. There is an urgent need to illustrate risk factors which can trigger the motility of cervical cancer cells. Our present study revealed that nanomolar concentration of bisphenol A (BPA) significantly promoted the in vitro migration and invasion of cervical cancer HeLa, SiHa, and C-33A cells. Further, BPA treatment increased the expression of metalloproteinase-9 (MMP-9) and fibronectin (FN) in both HeLa and SiHa cells, while did not obviously change the expression of MMP-2, vimentin (Vim) or N-Cadherin (N-Cad). BAY 11-7082, the inhibitor of NF-κB, significantly abolished BPA induced up regulation of FN and MMP-9 in cervical cancer cells. While the inhibitors of PKA (H89), ERK1/2 (PD 98059), EGFR (AG1478), or PI3K/Akt (LY294002) had no effect on the expression of either FN or MMP-9. BPA treatment rapidly increased the phosphorylation of both IκBα and p65, stimulated nuclear translocation, and up regulated the promoter activities of NF-κB. The BPA induced up regulation of MMP-9 and FN and activation of NF-κB were mediated by phosphorylation of IKKβ via PKC signals. Collectively, our study found for the first time that BPA stimulated the cervical cancer migration via IKK-β/NF-κB signals.
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476
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Wongthai P, Hagiwara K, Miyoshi Y, Wiriyasermkul P, Wei L, Ohgaki R, Kato I, Hamase K, Nagamori S, Kanai Y. Boronophenylalanine, a boron delivery agent for boron neutron capture therapy, is transported by ATB0,+, LAT1 and LAT2. Cancer Sci 2015; 106:279-86. [PMID: 25580517 PMCID: PMC4376436 DOI: 10.1111/cas.12602] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Revised: 12/30/2014] [Accepted: 01/05/2015] [Indexed: 01/30/2023] Open
Abstract
The efficacy of boron neutron capture therapy relies on the selective delivery of boron carriers to malignant cells. p-Boronophenylalanine (BPA), a boron delivery agent, has been proposed to be localized to cells through transporter-mediated mechanisms. In this study, we screened aromatic amino acid transporters to identify BPA transporters. Human aromatic amino acid transporters were functionally expressed in Xenopus oocytes and examined for BPA uptake and kinetic parameters. The roles of the transporters in BPA uptake were characterized in cancer cell lines. For the quantitative assessment of BPA uptake, HPLC was used throughout the study. Among aromatic amino acid transporters, ATB0,+, LAT1 and LAT2 were found to transport BPA with Km values of 137.4 ± 11.7, 20.3 ± 0.8 and 88.3 ± 5.6 μM, respectively. Uptake experiments in cancer cell lines revealed that the LAT1 protein amount was the major determinant of BPA uptake at 100 μM, whereas the contribution of ATB0,+ became significant at 1000 μM, accounting for 20–25% of the total BPA uptake in MCF-7 breast cancer cells. ATB0,+, LAT1 and LAT2 transport BPA at affinities comparable with their endogenous substrates, suggesting that they could mediate effective BPA uptake in vivo. The high and low affinities of LAT1 and ATB0,+, respectively, differentiate their roles in BPA uptake. ATB0,+, as well as LAT1, could contribute significantly to the tumor accumulation of BPA at clinical dose.
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Affiliation(s)
- Printip Wongthai
- Division of Bio-system Pharmacology, Department of Pharmacology, Graduate School of Medicine, Osaka University, Suita, Japan
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477
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Liu X, Miao M, Zhou Z, Gao E, Chen J, Wang J, Sun F, Yuan W, Li DK. Exposure to bisphenol-A and reproductive hormones among male adults. Environ Toxicol Pharmacol 2015; 39:934-941. [PMID: 25818109 DOI: 10.1016/j.etap.2015.03.007] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Revised: 03/05/2015] [Accepted: 03/06/2015] [Indexed: 06/04/2023]
Abstract
BACKGROUND Bisphenol A (BPA) is a suspected human endocrine disruptor which is widely used. METHODS In order to determine whether urine BPA level is associated with serum reproductive hormone levels among male adults, we carried out a cross-sectional study in China. We recruited 592 male workers and collected their urine samples for BPA measurement. We also collected blood samples and examined serum reproductive hormones. We used multiple linear regression and log-binomial model to examine associations between urine BPA level and hormone levels after controlling for age and smoking status. RESULTS An increased urine BPA level was associated with increased prolactin (p<0.001), estradiol (p<0.001), sex hormone-binding globulin level (p=0.001), and a reduced androstenedione (p<0.001) and free androgen index level (p=0.021). Males, whose urine BPA level was in the 2nd, 3rd and highest quartiles, had respectively 1.58, 1.33 and 3.09-fold increased prevalence of having a high prolactin level (>P75 level). The highest quartile of BPA level was associated with 1.63 and 1.50-fold increased prevalence of having a high estradiol and elevated sex hormone-binding globulin level. Males with higher quartile of BPA level had a lower inhibin B level. CONCLUSION High BPA exposure is associated with increased prolactin, estradiol and sex hormone-binding globulin level in males, and may contribute to male infertility.
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Affiliation(s)
- Xiaoqin Liu
- NPFPC Key Laboratory of Contraceptives and Devices, Department of Reproductive Epidemiology and Social Science, Shanghai Institute of Planned Parenthood Research, Shanghai, China
| | - Maohua Miao
- NPFPC Key Laboratory of Contraceptives and Devices, Department of Reproductive Epidemiology and Social Science, Shanghai Institute of Planned Parenthood Research, Shanghai, China
| | - Zhijun Zhou
- Department of Occupational Health and Toxicology, School of Public Health, WHO Collaborating Center for Occupational Health, Fudan University, Shanghai, China
| | - Ersheng Gao
- NPFPC Key Laboratory of Contraceptives and Devices, Department of Reproductive Epidemiology and Social Science, Shanghai Institute of Planned Parenthood Research, Shanghai, China
| | - Jianping Chen
- NPFPC Key Laboratory of Contraceptives and Devices, Department of Reproductive Epidemiology and Social Science, Shanghai Institute of Planned Parenthood Research, Shanghai, China
| | - Jintao Wang
- Department of Epidemiology, Shanxi Medical University, Taiyuan, China
| | - Fei Sun
- University of Science and Technology of China, Hefei, China
| | - Wei Yuan
- NPFPC Key Laboratory of Contraceptives and Devices, Department of Reproductive Epidemiology and Social Science, Shanghai Institute of Planned Parenthood Research, Shanghai, China.
| | - De-Kun Li
- Division of Research, Kaiser Foundation Research Institute, Kaiser Permanente, Oakland, CA, USA; Department of Health Research and Policy, School of Medicine, Stanford University, Stanford, CA, USA
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478
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Burton K, Shaw L, Morey LM. Differential effect of estradiol and bisphenol A on Set8 and Sirt1 expression in prostate cancer. Toxicol Rep 2015; 2:817-823. [PMID: 28962417 PMCID: PMC5598099 DOI: 10.1016/j.toxrep.2015.01.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 12/19/2014] [Accepted: 01/28/2015] [Indexed: 11/28/2022] Open
Abstract
Exposure to estrogenic compounds has been shown to epigenetically reprogram the prostate and may contribute to prostate cancer. The goal of this study was to determine the effect of physiological doses of estradiol and bisphenol A (BPA) on the expression of histone modifying enzymes (HMEs) in prostate cancer. Using two human prostate cancer cell lines we examined the expression of Set8, a histone methyltransferase, and Sirt1, a histone deacetylase, after exposure to estrogen or BPA. These experiments were carried out in the presence of natural hormones to understand the impact of additional exposure to estrogen or BPA on HME expression. We found differential expression of the HMEs in the different models and between the different compounds. Further, we determined that the changes in gene expression occurred via estrogen receptor signaling using the ER antagonist, ICI 182,780 (fulvestrant). Interestingly we found that the combination of ICI with estrogen or BPA greatly affected the expression of Set8, even when the hormone alone had no effect. This study demonstrates that the effects of estrogen and BPA on HME expression vary and that the presence of both the estrogen receptor and androgen receptor may be important for therapeutic intervention.
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Affiliation(s)
- Kevin Burton
- Department of Biology, Canisius College, Buffalo, NY 14208, United States
| | - Lisa Shaw
- Department of Biology, Canisius College, Buffalo, NY 14208, United States
| | - Lisa M Morey
- Department of Biology, Canisius College, Buffalo, NY 14208, United States
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479
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Couderc M, Poirier L, Zalouk-Vergnoux A, Kamari A, Blanchet-Letrouvé I, Marchand P, Vénisseau A, Veyrand B, Mouneyrac C, Le Bizec B. Occurrence of POPs and other persistent organic contaminants in the European eel (Anguilla anguilla) from the Loire estuary, France. Sci Total Environ 2015; 505:199-215. [PMID: 25461022 DOI: 10.1016/j.scitotenv.2014.09.053] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Revised: 09/17/2014] [Accepted: 09/17/2014] [Indexed: 06/04/2023]
Abstract
The chemical contamination of the Loire estuary by three classes of persistent organic pollutants (POPs): the polychlorinated biphenyls (PCBs), the polybrominated diphenyl ethers (PBDEs) and the perfluorinated and polyfluorinated alkyl substances (PFAS), and three families of organic contaminants, the alkylphenols (APs), the polycyclic aromatic hydrocarbon metabolites (OH-PAHs) and the bisphenol A (BPA) were investigated in the muscles and bile of European eel (Anguilla anguilla). Yellow eels (n=30) were caught in three different points along the estuary to highlight variations between sites and sources of contaminations. Silver eels (n=15) were also studied to compare contaminant impregnation between different life stages of the species. Average concentrations in the muscles of the eel ranged between: 857 and 4358 ng/gLW for the PCBs, 26 and 46 ng/gLW for the PBDEs, 130 and 1293 ng/gLW for the PFAS; and in bile: 31 and 286 μg/g protein for the APs, 9 and 26 μg/g protein for the OH-PAHs and ND-1213 μg/g protein for the BPA. Among PCBs, PCB 153 (40% contribution to the sum of PCBs) was predominant in all eel muscles. PBDE 47 (60%) was the most predominant PBDE congeners, while perfluorooctanesulfonic acid (85%) was the most widely detected PFAS. For APs, 4p-nonylphenol (91%) was the most abundant and for the OH-PAHs, it was 1OH-Pyrene (63%). All the eels exceeded the environmental quality standards (EQS) for biota for the PBDEs and about 75% were higher than the EQS specific to PFOS. Finally, 20% of the analyzed eels presented TEQ concentrations above the maximum limits for lipid-rich species. These results supplied new data on the occurrence, levels, and patterns of 53 organic chemicals in the eels from the Loire estuary and they highlighted the need of further investigations focused notably on the potential effects of these chemicals on this species and their analysis in the water and sediments of the estuary.
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Affiliation(s)
- M Couderc
- LUNAM Université, Université de Nantes, MMS, EA 2160, Nantes F-44322, France.
| | - L Poirier
- LUNAM Université, Université de Nantes, MMS, EA 2160, Nantes F-44322, France
| | - A Zalouk-Vergnoux
- LUNAM Université, Université de Nantes, MMS, EA 2160, Nantes F-44322, France
| | - A Kamari
- LUNAM Université, Université de Nantes, MMS, EA 2160, Nantes F-44322, France
| | - I Blanchet-Letrouvé
- LUNAM Université, Université de Nantes, MMS, EA 2160, Nantes F-44322, France
| | - P Marchand
- LUNAM Université, Oniris, Laboratoire d'Étude des Résidus et Contaminants dans les Aliments (LABERCA), Nantes F-44307, France
| | - A Vénisseau
- LUNAM Université, Oniris, Laboratoire d'Étude des Résidus et Contaminants dans les Aliments (LABERCA), Nantes F-44307, France
| | - B Veyrand
- LUNAM Université, Oniris, Laboratoire d'Étude des Résidus et Contaminants dans les Aliments (LABERCA), Nantes F-44307, France
| | - C Mouneyrac
- LUNAM Université, Université Catholique de l'Ouest, MMS, EA 2160, Angers F-49000, France
| | - B Le Bizec
- LUNAM Université, Oniris, Laboratoire d'Étude des Résidus et Contaminants dans les Aliments (LABERCA), Nantes F-44307, France
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480
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Portu A, Molinari AJ, Thorp SI, Pozzi ECC, Curotto P, Schwint AE, Saint Martin G. Neutron autoradiography to study boron compound microdistribution in an oral cancer model. Int J Radiat Biol 2015; 91:329-35. [PMID: 25510259 DOI: 10.3109/09553002.2014.995381] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
PURPOSE We previously reported the therapeutic efficacy of Sequential Boron Neutron Capture Therapy (Seq-BNCT), i.e., BPA (boronophenylalanine) - BNCT followed by GB-10 (decahydrodecaborate) - BNCT 1 or 2 days later, in the hamster cheek pouch oral cancer model. We have utilized the neutron autoradiography methodology to study boron microdistribution in tissue. The aim was to use this method to evaluate if the distribution of GB-10 is altered by prior application of BPA-BNCT in Sequential BNCT protocols. MATERIALS AND METHODS Extensive qualitative and quantitative autoradiography analyses were performed in the following groups: G1 (animals without boron); G2 (animals injected with BPA); G3 (animals injected with GB-10); G4 (same as G3, 24 h after BPA-BNCT); and G5 (same protocol as G4, 48 h interval). RESULTS A detailed study of boron localization in the different tissue structures of tumor, premalignant and normal tissue in the hamster cheek pouch was performed. GB-10 accumulated preferentially in non-neoplastic connective tissue, whereas for BPA neoplastic cells showed the highest boron concentration. Boron distribution was less heterogeneous for GB-10 than for BPA. In premalignant and normal tissue, GB-10 and BPA accumulated mostly in connective tissue and epithelium, respectively. CONCLUSIONS BPA-BNCT could alter boron microlocalization of GB-10 administered subsequently. Boron targeting homogeneity is essential for therapeutic success.
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Affiliation(s)
- Agustina Portu
- National Atomic Energy Commission (CNEA) , San Martin, Buenos Aires , Argentina
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Rouiller-Fabre V, Guerquin MJ, N’Tumba-Byn T, Muczynski V, Moison D, Tourpin S, Messiaen S, Habert R, Livera G. Nuclear receptors and endocrine disruptors in fetal and neonatal testes: a gapped landscape. Front Endocrinol (Lausanne) 2015; 6:58. [PMID: 25999913 PMCID: PMC4423451 DOI: 10.3389/fendo.2015.00058] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 04/07/2015] [Indexed: 11/28/2022] Open
Abstract
During the last decades, many studies reported that male reproductive disorders are increasing among humans. It is currently acknowledged that these abnormalities can result from fetal exposure to environmental chemicals that are progressively becoming more concentrated and widespread in our environment. Among the chemicals present in the environment (air, water, food, and many consumer products), several can act as endocrine disrupting compounds (EDCs), thus interfering with the endocrine system. Phthalates, bisphenol A (BPA), and diethylstilbestrol (DES) have been largely incriminated, particularly during the fetal and neonatal period, due to their estrogenic and/or anti-androgenic properties. Indeed, many epidemiological and experimental studies have highlighted their deleterious impact on fetal and neonatal testis development. As EDCs can affect many different genomic and non-genomic pathways, the mechanisms underlying the adverse effects of EDC exposure are difficult to elucidate. Using literature data and results from our laboratory, in the present review, we discuss the role of classical nuclear receptors (genomic pathway) in the fetal and neonatal testis response to EDC exposure, particularly to phthalates, BPA, and DES. Among the nuclear receptors, we focused on some of the most likely candidates, such as peroxisome-proliferator activated receptor (PPAR), androgen receptor (AR), estrogen receptors (ERα and β), liver X receptors (LXR), and small heterodimer partner (SHP). First, we describe the expression and potential functions (based on data from studies using receptor agonists and mouse knockout models) of these nuclear receptors in the developing testis. Then, for each EDC studied, we summarize the main evidences indicating that the reprotoxic effect of each EDC under study is mediated through a specific nuclear receptor(s). We also point-out the involvement of other receptors and nuclear receptor-independent pathways.
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Affiliation(s)
- Virginie Rouiller-Fabre
- Unit of Genetic Stability, Stem Cells and Radiation, Laboratory of Development of the Gonads, Sorbonne Paris Cité, Université Paris Diderot, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, Fontenay-aux-Roses, France
- Unité 967, INSERM, Fontenay aux Roses, France
- *Correspondence: Virginie Rouiller-Fabre, Unit of Genetic Stability, Stem Cells and Radiation, Laboratory of Development of the Gonads, CEA, DSV, iRCM, SCSR, LDG, BP6, Fontenay aux Roses F-92265, France,
| | - Marie Justine Guerquin
- Unit of Genetic Stability, Stem Cells and Radiation, Laboratory of Development of the Gonads, Sorbonne Paris Cité, Université Paris Diderot, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, Fontenay-aux-Roses, France
- Unité 967, INSERM, Fontenay aux Roses, France
| | - Thierry N’Tumba-Byn
- Unit of Genetic Stability, Stem Cells and Radiation, Laboratory of Development of the Gonads, Sorbonne Paris Cité, Université Paris Diderot, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, Fontenay-aux-Roses, France
- Unité 967, INSERM, Fontenay aux Roses, France
| | - Vincent Muczynski
- Unit of Genetic Stability, Stem Cells and Radiation, Laboratory of Development of the Gonads, Sorbonne Paris Cité, Université Paris Diderot, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, Fontenay-aux-Roses, France
- Unité 967, INSERM, Fontenay aux Roses, France
| | - Delphine Moison
- Unit of Genetic Stability, Stem Cells and Radiation, Laboratory of Development of the Gonads, Sorbonne Paris Cité, Université Paris Diderot, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, Fontenay-aux-Roses, France
- Unité 967, INSERM, Fontenay aux Roses, France
| | - Sophie Tourpin
- Unit of Genetic Stability, Stem Cells and Radiation, Laboratory of Development of the Gonads, Sorbonne Paris Cité, Université Paris Diderot, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, Fontenay-aux-Roses, France
- Unité 967, INSERM, Fontenay aux Roses, France
| | - Sébastien Messiaen
- Unit of Genetic Stability, Stem Cells and Radiation, Laboratory of Development of the Gonads, Sorbonne Paris Cité, Université Paris Diderot, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, Fontenay-aux-Roses, France
- Unité 967, INSERM, Fontenay aux Roses, France
| | - René Habert
- Unit of Genetic Stability, Stem Cells and Radiation, Laboratory of Development of the Gonads, Sorbonne Paris Cité, Université Paris Diderot, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, Fontenay-aux-Roses, France
- Unité 967, INSERM, Fontenay aux Roses, France
| | - Gabriel Livera
- Unit of Genetic Stability, Stem Cells and Radiation, Laboratory of Development of the Gonads, Sorbonne Paris Cité, Université Paris Diderot, Fontenay-aux-Roses, France
- CEA, DSV, iRCM, SCSR, LDG, Fontenay-aux-Roses, France
- Unité 967, INSERM, Fontenay aux Roses, France
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482
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Eladak S, Grisin T, Moison D, Guerquin MJ, N'Tumba-Byn T, Pozzi-Gaudin S, Benachi A, Livera G, Rouiller-Fabre V, Habert R. A new chapter in the bisphenol A story: bisphenol S and bisphenol F are not safe alternatives to this compound. Fertil Steril 2014; 103:11-21. [PMID: 25475787 DOI: 10.1016/j.fertnstert.2014.11.005] [Citation(s) in RCA: 417] [Impact Index Per Article: 41.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Revised: 11/04/2014] [Accepted: 11/05/2014] [Indexed: 10/24/2022]
Abstract
Bisphenol A (BPA) is a widely studied typical endocrine-disrupting chemical, and one of the major new issues is the safe replacement of this commonly used compound. Bisphenol S (BPS) and bisphenol F (BPF) are already or are planned to be used as BPA alternatives. With the use of a culture system that we developed (fetal testis assay [FeTA]), we previously showed that 10 nmol/L BPA reduces basal testosterone secretion of human fetal testis explants and that the susceptibility to BPA is at least 100-fold lower in rat and mouse fetal testes. Here, we show that addition of LH in the FeTA system considerably enhances BPA minimum effective concentration in mouse and human but not in rat fetal testes. Then, using the FeTA system without LH (the experimental conditions in which mouse and human fetal testes are most sensitive to BPA), we found that, as for BPA, 10 nmol/L BPS or BPF is sufficient to decrease basal testosterone secretion by human fetal testes with often nonmonotonic dose-response curves. In fetal mouse testes, the dose-response curves were mostly monotonic and the minimum effective concentrations were 1,000 nmol/L for BPA and BPF and 100 nmol/L for BPS. Finally, 10,000 nmol/L BPA, BPS, or BPF reduced Insl3 expression in cultured mouse fetal testes. This is the first report describing BPS and BPF adverse effects on a physiologic function in humans and rodents.
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Affiliation(s)
- Soria Eladak
- Unit of Genetic Stability, Stem Cells, and Radiation, Laboratory of Development of the Gonads, Université Paris Diderot, Sorbonne Paris Cité, Fontenay-aux-Roses, France; Commissariat à l'Energie Atomique, Fontenay-aux-Roses, France; Institut National de la Santé et de la Recherche Médicale, Unité 967, Fontenay-aux-Roses, France
| | - Tiphany Grisin
- Unit of Genetic Stability, Stem Cells, and Radiation, Laboratory of Development of the Gonads, Université Paris Diderot, Sorbonne Paris Cité, Fontenay-aux-Roses, France; Commissariat à l'Energie Atomique, Fontenay-aux-Roses, France; Institut National de la Santé et de la Recherche Médicale, Unité 967, Fontenay-aux-Roses, France
| | - Delphine Moison
- Unit of Genetic Stability, Stem Cells, and Radiation, Laboratory of Development of the Gonads, Université Paris Diderot, Sorbonne Paris Cité, Fontenay-aux-Roses, France; Commissariat à l'Energie Atomique, Fontenay-aux-Roses, France; Institut National de la Santé et de la Recherche Médicale, Unité 967, Fontenay-aux-Roses, France
| | - Marie-Justine Guerquin
- Unit of Genetic Stability, Stem Cells, and Radiation, Laboratory of Development of the Gonads, Université Paris Diderot, Sorbonne Paris Cité, Fontenay-aux-Roses, France; Commissariat à l'Energie Atomique, Fontenay-aux-Roses, France; Institut National de la Santé et de la Recherche Médicale, Unité 967, Fontenay-aux-Roses, France
| | - Thierry N'Tumba-Byn
- Unit of Genetic Stability, Stem Cells, and Radiation, Laboratory of Development of the Gonads, Université Paris Diderot, Sorbonne Paris Cité, Fontenay-aux-Roses, France; Commissariat à l'Energie Atomique, Fontenay-aux-Roses, France; Institut National de la Santé et de la Recherche Médicale, Unité 967, Fontenay-aux-Roses, France
| | - Stéphanie Pozzi-Gaudin
- Service de Gynécologie-Obstétrique et Médecine de la Reproduction, Hôpital A. Béclère, Université Paris Sud, Clamart, France
| | - Alexandra Benachi
- Service de Gynécologie-Obstétrique et Médecine de la Reproduction, Hôpital A. Béclère, Université Paris Sud, Clamart, France
| | - Gabriel Livera
- Unit of Genetic Stability, Stem Cells, and Radiation, Laboratory of Development of the Gonads, Université Paris Diderot, Sorbonne Paris Cité, Fontenay-aux-Roses, France; Commissariat à l'Energie Atomique, Fontenay-aux-Roses, France; Institut National de la Santé et de la Recherche Médicale, Unité 967, Fontenay-aux-Roses, France
| | - Virginie Rouiller-Fabre
- Unit of Genetic Stability, Stem Cells, and Radiation, Laboratory of Development of the Gonads, Université Paris Diderot, Sorbonne Paris Cité, Fontenay-aux-Roses, France; Commissariat à l'Energie Atomique, Fontenay-aux-Roses, France; Institut National de la Santé et de la Recherche Médicale, Unité 967, Fontenay-aux-Roses, France
| | - René Habert
- Unit of Genetic Stability, Stem Cells, and Radiation, Laboratory of Development of the Gonads, Université Paris Diderot, Sorbonne Paris Cité, Fontenay-aux-Roses, France; Commissariat à l'Energie Atomique, Fontenay-aux-Roses, France; Institut National de la Santé et de la Recherche Médicale, Unité 967, Fontenay-aux-Roses, France.
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483
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Hines EP, Mendola P, von Ehrenstein OS, Ye X, Calafat AM, Fenton SE. Concentrations of environmental phenols and parabens in milk, urine and serum of lactating North Carolina women. Reprod Toxicol 2014; 54:120-8. [PMID: 25463527 DOI: 10.1016/j.reprotox.2014.11.006] [Citation(s) in RCA: 125] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2014] [Revised: 10/10/2014] [Accepted: 11/15/2014] [Indexed: 11/25/2022]
Abstract
Phenols and parabens show some evidence for endocrine disruption in laboratory animals. The goal of the Methods Advancement for Milk Analysis (MAMA) Study was to develop or adapt methods to measure parabens (methyl, ethyl, butyl, propyl) and phenols (bisphenol A (BPA), 2,4- and 2,5-dichlorophenol, benzophenone-3, triclosan) in urine, milk and serum twice during lactation, to compare concentrations across matrices and with endogenous biomarkers among 34 North Carolina women. These non-persistent chemicals were detected in most urine samples (53-100%) and less frequently in milk or serum; concentrations differed by matrix. Although urinary parabens, triclosan and dichlorophenols concentrations correlated significantly at two time points, those of BPA and benzophenone-3 did not, suggesting considerable variability in those exposures. These pilot data suggest that nursing mothers are exposed to phenols and parabens; urine is the best measurement matrix; and correlations between chemical and endogenous immune-related biomarkers merit further investigation.
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Affiliation(s)
- Erin P Hines
- Office of Research and Development, National Center for Environmental Assessment, U.S. Environmental Protection Agency, RTP, NC.
| | - Pauline Mendola
- Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Rockville, MD.
| | - Ondine S von Ehrenstein
- Department of Community Health Sciences, Fielding School of Public Health, University of California Los Angeles, Los Angeles, CA.
| | - Xiaoyun Ye
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA.
| | - Antonia M Calafat
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA.
| | - Suzanne E Fenton
- Division of the National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, RTP, NC.
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484
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Tani H, Kurihara H, Hiroi K, Honda N, Yoshimoto M, Kono Y, Murakami R, Kumita S, Arai Y, Itami J. Correlation of (18)F- BPA and (18)F-FDG uptake in head and neck cancers. Radiother Oncol 2014; 113:193-7. [PMID: 25466367 DOI: 10.1016/j.radonc.2014.11.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Revised: 10/16/2014] [Accepted: 11/01/2014] [Indexed: 11/17/2022]
Abstract
BACKGROUND AND PURPOSE The aim of this study was to compare the accumulation of 4-borono-2-(18)F-fluoro-phenylalanine ((18)F-BPA) with that of (18)F-fluorodeoxyglucose ((18)F-FDG) in head and neck cancers, and to assess the usefulness of (18)F-FDG PET for screening candidates for boron neutron capture therapy (BNCT). MATERIAL AND METHODS Twenty patients with pathologically proven malignant tumors of the head and neck were recruited from March 2012 to January 2014. All patients underwent both whole-body (18)F-BPA PET/CT and (18)F-FDG PET/CT within 2weeks of each other. The uptakes of (18)F-BPA and (18)F-FDG at 1h after injection were evaluated using the maximum standardized uptake value (SUVmax). RESULTS The accumulation of (18)F-FDG was significantly correlated with that of (18)F-BPA. The SUVmax of (18)F-FDG ⩾5.0 is considered to be suggestive of high (18)F-BPA accumulation. CONCLUSIONS (18)F-FDG PET might be an effective screening method performed prior to (18)F-BPA for selecting patients with head and neck cancer for treatment with BNCT.
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Affiliation(s)
- Hitomi Tani
- Department of Diagnostic Radiology, National Cancer Center Hospital, Tokyo, Japan; Department of Radiology, Nippon Medical School, Tokyo, Japan
| | - Hiroaki Kurihara
- Department of Diagnostic Radiology, National Cancer Center Hospital, Tokyo, Japan.
| | - Kenta Hiroi
- Department of Diagnostic Radiology, National Cancer Center Hospital, Tokyo, Japan
| | - Natsuki Honda
- Department of Diagnostic Radiology, National Cancer Center Hospital, Tokyo, Japan
| | - Mitsuyoshi Yoshimoto
- Division of Functional Imaging, National Cancer Center Hospital East, Chiba, Japan
| | - Yuzuru Kono
- Department of Diagnostic Radiology, National Cancer Center Hospital, Tokyo, Japan
| | | | | | - Yasuaki Arai
- Department of Diagnostic Radiology, National Cancer Center Hospital, Tokyo, Japan
| | - Jun Itami
- Department of Radiation Oncology, National Cancer Center Hospital, Tokyo, Japan
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485
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Chen F, Zhou L, Bai Y, Zhou R, Chen L. Hypothalamic-pituitary-adrenal axis hyperactivity accounts for anxiety- and depression-like behaviors in rats perinatally exposed to bisphenol A. J Biomed Res 2014; 29:250-8. [PMID: 26060449 PMCID: PMC4449493 DOI: 10.7555/jbr.29.20140058] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2014] [Revised: 06/10/2014] [Accepted: 10/13/2014] [Indexed: 11/04/2022] Open
Abstract
Accumulating studies have proved that perinatal exposure to environmental dose causes long-term potentiation in anxiety/depression-related behaviors in rats. Hyperactivity of the hypothalamic-pituitary-adrenal (HPA) axis is one of the most consistent biological findings in anxiety- and depression-related disorders. The HPA axis is reported to be susceptible to developmental reprogramming. The present study focused on HPA reactivity in postnatal day (PND) 80 male rats exposed perinatally to environmental-dose BPA. When female breeders were orally administered 2 μg/(kg.day) BPA from gestation day 10 to lactation day 7, their offspring (PND 80 BPA-exposed rats) showed obvious anxiety/depression-like behaviors. Notably, significant increase in serum corticosterone and adrenocorticotropin, and corticotropin-releasing hormone mRNA were detected in BPA-exposed rats before or after the mild stressor. Additionally, the level of glucocorticoid receptor mRNA in the hippocampus, but not the hypothalamus, was decreased in BPA-exposed rats. The levels of hippocampal mineralocorticoid receptor mRNA, neuronal nitric oxide synthase and phosphorylated cAMP response element binding protein were increased in BPA-exposed rats. In addition, the testosterone level was in BPA-exposed rats. The results indicate that reprogramming-induced hyperactivity of the HPA axis is an important link between perinatal BPA exposure and persistent potentiation in anxiety and depression.
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Affiliation(s)
- Fang Chen
- State Key Lab of Reproductive Medicine
| | - Libin Zhou
- Department of Physiology, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | | | - Rong Zhou
- Department of Physiology, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Ling Chen
- Department of Physiology, Nanjing Medical University, Nanjing, Jiangsu 210029, China
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486
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Lu J, Wu J, Stoffella PJ, Wilson PC. Uptake and distribution of bisphenol A and nonylphenol in vegetable crops irrigated with reclaimed water. J Hazard Mater 2014; 283:865-70. [PMID: 25464330 DOI: 10.1016/j.jhazmat.2014.10.018] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Revised: 09/02/2014] [Accepted: 10/04/2014] [Indexed: 06/04/2023]
Abstract
The potential uptake and distribution of bisphenol A (BPA) and nonylphenol (NP) (from reclaimed irrigation water) in edible crops was investigated. BPA and NP were spiked into simulated reclaimed water at environmentally relevant concentrations. Two crops (lettuce, Lactuca sativa and tomato, Lycopersicon esculentum) were grown hydroponically in a greenhouse using the spiked irrigation water under two irrigation exposure scenarios (overhead foliar exposure and subsurface root exposure). BPA concentrations in tomato fruit were 26.6 ± 5.8 (root exposure) and 18.3 ± 3.5 (foliar exposure) μg kg(-1), while concentrations in lettuce leaves were 80.6 ± 23.1 (root exposure) and 128.9 ± 17.4 (foliar exposure) μg kg(-1). NP concentrations in tomato fruit were 46.1 ± 6.6 (root exposure) and 24.6 ± 6.4 (foliar exposure) μg kg(-1), while concentrations in lettuce leaves were 144.1 ± 9.2 (root exposure) and 195.0 ± 16.9 (foliar exposure) μg kg(-1). BPA was relatively mobile in lettuce plants regardless of exposure route. Limited mobility was observed for NP in both crops and BPA in tomatoes. The estimated daily intake of BPA and NP through consumption of vegetables irrigated with reclaimed water ranged from 8.9-62.9 to 11.9-95.1 μg, respectively, depending on the exposure route.
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Affiliation(s)
- Jian Lu
- Indian River Research and Education Center, University of Florida/IFAS, 2199 South Rock Road, Fort Pierce, FL 34945-3138, United States
| | - Jun Wu
- Indian River Research and Education Center, University of Florida/IFAS, 2199 South Rock Road, Fort Pierce, FL 34945-3138, United States
| | - Peter J Stoffella
- Indian River Research and Education Center, University of Florida/IFAS, 2199 South Rock Road, Fort Pierce, FL 34945-3138, United States
| | - P Chris Wilson
- Indian River Research and Education Center, University of Florida/IFAS, 2199 South Rock Road, Fort Pierce, FL 34945-3138, United States.
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487
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Rönn M, Lind L, Örberg J, Kullberg J, Söderberg S, Larsson A, Johansson L, Ahlström H, Lind PM. Bisphenol A is related to circulating levels of adiponectin, leptin and ghrelin, but not to fat mass or fat distribution in humans. Chemosphere 2014; 112:42-48. [PMID: 25048886 DOI: 10.1016/j.chemosphere.2014.03.042] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Revised: 03/04/2014] [Accepted: 03/07/2014] [Indexed: 06/03/2023]
Abstract
OBJECTIVE Since bisphenol A (BPA) has been shown to induce obesity in experimental studies, we explored the associations between BPA and fat mass, fat distribution and circulating levels of adiponectin, leptin and ghrelin in humans. METHODS In the Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS), fat mass and fat distribution were determined in 70-year-old men and women (n=890) by dual-energy X-ray absorptiometry (DXA) and magnetic resonance imaging (MRI) (n=287). Serum levels of BPA were analyzed using isotope liquid chromatography/tandem mass spectrometer (API4000LC-MS/MS). Hormone levels were analyzed with radioimmunoassays (RIA) or enzyme-linked immunosorbent assay (ELISA). Imaging was performed approximately two years following collection of other data. RESULTS Serum concentrations of BPA were not related to adipose tissue measurements by DXA or MRI. BPA associated positively with adiponectin and leptin, but negatively with ghrelin, following adjustments for sex, height, fat mass, lean mass, smoking, alcohol consumption, physical activity, energy intake, and educational levels (p<0.001, p=0.009, p<0.001, respectively). The relationship between BPA and ghrelin was stronger in women than in men. CONCLUSION Although no relationships between BPA levels and measures of fat mass were seen, BPA associated strongly with the adipokines adiponectin and leptin and with the gut-hormone ghrelin suggesting that BPA may interfere with hormonal control of hunger and satiety.
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Affiliation(s)
- Monika Rönn
- Department of Medical Sciences, Occupational and Environmental Medicine, Uppsala University, Uppsala, Sweden
| | - Lars Lind
- Department of Medical Sciences, Cardiovascular epidemiology, Uppsala University, Uppsala, Sweden
| | - Jan Örberg
- Department of Organismal Biology, Environmental Toxicology, Uppsala University, Uppsala, Sweden
| | - Joel Kullberg
- Department of Radiology, Oncology, and Radiation Science, Uppsala University, Uppsala, Sweden
| | - Stefan Söderberg
- Department of Public Health and Clinical Medicine, and Heart Centre, Umeå University, Umeå, Sweden
| | - Anders Larsson
- Department of Medical Sciences, Cardiovascular epidemiology, Uppsala University, Uppsala, Sweden
| | - Lars Johansson
- Department of Radiology, Oncology, and Radiation Science, Uppsala University, Uppsala, Sweden
| | - Håkan Ahlström
- Department of Radiology, Oncology, and Radiation Science, Uppsala University, Uppsala, Sweden
| | - P Monica Lind
- Department of Medical Sciences, Occupational and Environmental Medicine, Uppsala University, Uppsala, Sweden.
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488
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Branco AT, Lemos B. Interaction between bisphenol A and dietary sugar affects global gene transcription in Drosophila melanogaster. Genom Data 2014; 2:308-11. [PMID: 26484116 PMCID: PMC4535756 DOI: 10.1016/j.gdata.2014.09.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 09/14/2014] [Accepted: 09/17/2014] [Indexed: 11/23/2022]
Abstract
Human exposure to environmental toxins is a public health issue. The microarray data available in the Gene Expression Omnibus database under accession number GSE55655 and GSE55670GSE55655GSE55670 show the isolated and combined effects of dietary sugar and two organic compounds present in a variety of plastics [bisphenol A (BPA) and Bis(2-ethylhexyl) phthalate (DEHP)] on global gene expression in Drosophila melanogaster. The study was carried out with samples collected from flies exposed to these compounds for a limited period of time (48 h) in the adult stage, or throughout the entire development of the insect. The arrays were normalized using the limma/Bioconductor package. Differential expression was inferred using linear models in limma and BAGEL. The data show that each compound had its unique consequences to gene expression, and that the individual effect of each organic compound is maximized with the joint ingestion of dietary sugar.
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Affiliation(s)
- Alan T Branco
- Molecular and Integrative Physiological Sciences Program, Department of Environmental Health, Harvard School of Public Health, 665 Huntington Avenue, Bldg. 2, Boston, MA 02115-6021, United States
| | - Bernardo Lemos
- Molecular and Integrative Physiological Sciences Program, Department of Environmental Health, Harvard School of Public Health, 665 Huntington Avenue, Bldg. 2, Boston, MA 02115-6021, United States
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489
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Pawar V, Naik P, Giridhar R, Yadav MR. Enhancing Skin Permeation of Biphenylacetic Acid ( BPA) Using Salt Formation with Organic and Alkali Metal Bases. Sci Pharm 2014; 83:191-205. [PMID: 26839810 PMCID: PMC4727820 DOI: 10.3797/scipharm.1406-19] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Accepted: 09/26/2014] [Indexed: 11/22/2022] Open
Abstract
In the present study, a series of organic and alkali metal salts of biphenylacetic acid (BPA) have been prepared and evaluated in vitro for percutaneous drug delivery. The physicochemical properties of BPA salts were determined using solubility measurements, DSC, and IR. The DSC thermogram and FTIR spectra confirmed the salt formation with organic and alkali metal bases. Among the series, salts with organic amines (ethanolamine, diethanolamine, triethanolamine, and diethylamine) had lowered melting points while the alkali metal salt (sodium) had a higher melting point than BPA. The in vitro study showed that salt formation improves the physicochemical properties of BPA, leading to improved permeability through the skin. Amongst all the prepared salts, ethanolamine salt (1b) showed 7.2- and 5.4-fold higher skin permeation than the parent drug at pH 7.4 and 5.0, respectively, using rat skin.
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Affiliation(s)
- Vijay Pawar
- Pharmacy Department, Faculty of Technology & Engineering, The M. S. University of Baroda, Vadodara-390001, India
| | - Prashant Naik
- Pharmacy Department, Faculty of Technology & Engineering, The M. S. University of Baroda, Vadodara-390001, India
| | - Rajani Giridhar
- Pharmacy Department, Faculty of Technology & Engineering, The M. S. University of Baroda, Vadodara-390001, India
| | - Mange Ram Yadav
- Pharmacy Department, Faculty of Technology & Engineering, The M. S. University of Baroda, Vadodara-390001, India
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490
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Zhang KS, Chen HQ, Chen YS, Qiu KF, Zheng XB, Li GC, Yang HD, Wen CJ. Bisphenol A stimulates human lung cancer cell migration via upregulation of matrix metalloproteinases by GPER/EGFR/ERK1/2 signal pathway. Biomed Pharmacother 2014; 68:1037-43. [PMID: 25312822 DOI: 10.1016/j.biopha.2014.09.003] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Accepted: 09/09/2014] [Indexed: 12/21/2022] Open
Abstract
Lung cancer is one of the leading causes of cancer deaths worldwide. Recent evidences indicated that bisphenol A (BPA), a wide contaminant with endocrine disrupting activity, could enhance the susceptibility of carcinogenesis. Although there are increasing opportunities for lung cells exposure to BPA via inhalation, there is no study concerning the effects of BPA on the development of lung cancer. The present study revealed that BPA less than 10(-4)M had limited effects on the proliferation of lung cancer A549 cells, however, BPA treatment significantly stimulated the in vitro migration and invasion of cells combing with the morphological changes and up regulation of matrix metalloproteinase-2 (MMP-2) and MMP-9. G-protein-coupled estrogen receptor (GPER), while not estrogen receptor α/β (ERα/β), mediated the BPA induced up regulation of MMPs. Further, BPA treatment induced rapid activation of ERK1/2 via GPER/EGFR. GPER/ERFR/ERK1/2 mediated the BPA induced upregulation of MMPs and in vitro migration of lung cancer A549 cells. In summary, our data presented here revealed for the first time that BPA can promote the in vitro migration and invasion of lung cancer cells via upregulation of MMPs and GPER/EGFR/ERK1/2 signals, which mediated these effects. This study suggested that more attention should be paid on the BPA and other possible environmental estrogens induced development of lung cancer.
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Affiliation(s)
- Kun-Shui Zhang
- Department of Pharmacy, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, Guangzhou 510120, China
| | - Hui-Qing Chen
- Guangdong Prevention and Treatment Center for Occupational Diseases, Guangzhou 510310, China
| | - Yi-Shen Chen
- Department of Pharmacy, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, China
| | - Kai-Feng Qiu
- Department of Pharmacy, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, Guangzhou 510120, China
| | - Xiao-Bin Zheng
- Department of Respiratory Medicine, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, China
| | - Guo-Cheng Li
- Department of Pharmacy, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, Guangzhou 510120, China
| | - Hai-Di Yang
- Department of Otolaryngology, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, Guangzhou 510120, China.
| | - Cui-Ju Wen
- Guangdong Prevention and Treatment Center for Occupational Diseases, Guangzhou 510310, China
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491
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Pollock T, deCatanzaro D. Presence and bioavailability of bisphenol A in the uterus of rats and mice following single and repeated dietary administration at low doses. Reprod Toxicol 2014; 49:145-54. [PMID: 25181699 DOI: 10.1016/j.reprotox.2014.08.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 08/01/2014] [Accepted: 08/23/2014] [Indexed: 01/31/2023]
Abstract
This research examined the distribution of low dietary doses of bisphenol A (BPA). When female rats received 50μg/kg (14)C-BPA orally, radioactivity was distributed throughout the body, with especial presence in the uterus. Pre-treatment with estradiol or the estrogen antagonist ICI 182,780 significantly reduced radioactivity in the uterus. The majority of BPA at the uterus was determined to be aglycone (receptor-active) via GC-MS. Subsequently, mice given 0.5, 5, or 50μg/kg (14)C-BPA showed more radioactivity in the uterus than in other non-metabolic tissues. When female mice received 1, 7, or 28 daily doses of 50μg/kg (14)C-BPA, then were measured 24h after the last dose, significantly more radioactivity was detected in the uterus, liver, and kidney following repeated doses. Collectively, these data provide evidence for the in vivo interaction of BPA with estrogen receptors. They also indicate elevated presence of BPA in reproductive tissues after repeated low doses.
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492
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Sadowski RN, Wise LM, Park PY, Schantz SL, Juraska JM. Early exposure to bisphenol A alters neuron and glia number in the rat prefrontal cortex of adult males, but not females. Neuroscience 2014; 279:122-31. [PMID: 25193849 DOI: 10.1016/j.neuroscience.2014.08.038] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Revised: 07/30/2014] [Accepted: 08/25/2014] [Indexed: 11/26/2022]
Abstract
Previous work has shown that exposure to bisphenol A (BPA) during early development can alter sexual differentiation of the brain in rodents, although few studies have examined effects on areas of the brain associated with cognition. The current study examined if developmental BPA exposure alters the total number of neurons and glia in the medial prefrontal cortex (mPFC) in adulthood. Pregnant Long-Evans rats were orally exposed to 0, 4, 40, or 400-μg/kg BPA in corn oil throughout pregnancy. From postnatal days 1 to 9, pups were given daily oral doses of oil or BPA, at doses corresponding to those given during gestation. Brains were examined in adulthood, and the volume of layers 2/3 and layers 5/6 of the mPFC was parcellated. The density of neurons and glia in these layers was quantified stereologically with the optical disector, and density was multiplied by volume for each animal. Males exposed to 400-μg/kg BPA were found to have increased numbers of neurons and glia in layers 5/6. Although there were no significant effects of BPA in layers 2/3, the pattern of increased neuron number in males exposed to 400-μg/kg BPA was similar to that seen in layers 5/6. No effects of BPA were seen in females or in males exposed to the other doses of BPA. This study indicates that males are more susceptible to the long-lasting effects of BPA on anatomy of the mPFC, an area implicated in neurological disorders.
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Affiliation(s)
- R N Sadowski
- Neuroscience Program, University of Illinois at Urbana-Champaign, Champaign, IL 61820, United States
| | - L M Wise
- Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, IL 61820, United States
| | - P Y Park
- Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, IL 61820, United States
| | - S L Schantz
- Neuroscience Program, University of Illinois at Urbana-Champaign, Champaign, IL 61820, United States; Department of Comparative Biosciences, University of Illinois at Urbana-Champaign, Champaign, IL 61820, United States
| | - J M Juraska
- Neuroscience Program, University of Illinois at Urbana-Champaign, Champaign, IL 61820, United States; Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, IL 61820, United States.
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493
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Cruz G, Foster W, Paredes A, Yi KD, Uzumcu M. Long-term effects of early-life exposure to environmental oestrogens on ovarian function: role of epigenetics. J Neuroendocrinol 2014; 26:613-24. [PMID: 25040227 PMCID: PMC4297924 DOI: 10.1111/jne.12181] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Revised: 06/22/2014] [Accepted: 07/15/2014] [Indexed: 12/14/2022]
Abstract
Oestrogens play an important role in development and function of the brain and reproductive tract. Accordingly, it is considered that developmental exposure to environmental oestrogens can disrupt neural and reproductive tract development, potentially resulting in long-term alterations in neurobehaviour and reproductive function. Many chemicals have been shown to have oestrogenic activity, whereas others affect oestrogen production and turnover, resulting in the disruption of oestrogen signalling pathways. However, these mechanisms and the concentrations required to induce these effects cannot account for the myriad adverse effects of environmental toxicants on oestrogen-sensitive target tissues. Hence, alternative mechanisms are assumed to underlie the adverse effects documented in experimental animal models and thus could be important to human health. In this review, the epigenetic regulation of gene expression is explored as a potential target of environmental toxicants including oestrogenic chemicals. We suggest that toxicant-induced changes in epigenetic signatures are important mechanisms underlying the disruption of ovarian follicular development. In addition, we discuss how exposure to environmental oestrogens during early life can alter gene expression through effects on epigenetic control potentially leading to permanent changes in ovarian physiology.
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Affiliation(s)
- Gonzalo Cruz
- Centro de Neurobiología y Plasticidad Cerebral, Instituto de Fisiología, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
- Correspondence to: Gonzalo Cruz, Gran Bretaña 1111, Playa Ancha, Valparaíso, Chile. 2360102, Tel. 56 32 2508015,
| | - Warren Foster
- Department of Obstetrics & Gynecology, McMaster University, Hamilton, Ontario, Canada
| | - Alfonso Paredes
- Laboratorio de Neurobioquímica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Chile
| | - Kun Don Yi
- Syngenta Crop Protection, LLC. Greensboro, NC
| | - Mehmet Uzumcu
- Department of Animal Sciences, School of Environmental and Biological Sciences, Rutgers, The State University of New Jersey, New Brunswick, New Jersey
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494
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Héliès-Toussaint C, Peyre L, Costanzo C, Chagnon MC, Rahmani R. Is bisphenol S a safe substitute for bisphenol A in terms of metabolic function? An in vitro study. Toxicol Appl Pharmacol 2014; 280:224-35. [PMID: 25111128 DOI: 10.1016/j.taap.2014.07.025] [Citation(s) in RCA: 127] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Revised: 07/29/2014] [Accepted: 07/31/2014] [Indexed: 01/08/2023]
Abstract
As bisphenol A (BPA) has been shown to induce adverse effects on human health, especially through the activation of endocrine pathways, it is about to be withdrawn from the European market and replaced by analogues such as bisphenol S (BPS). However, toxicological data on BPS is scarce, and so it is necessary to evaluate the possible effects of this compound on human health. We compared the effect of BPA and BPS on obesity and hepatic steatosis processes using low doses in the same range as those found in the environment. Two in vitro models were used, the adipose cell line 3T3-L1 and HepG2 cells, representative of hepatic functions. We analyzed different parameters such as lipid and glucose uptakes, lipolysis, leptin production and the modulation of genes involved in lipid metabolism and energy balance. BPA and BPS induced an increase in the lipid content in the 3T3-L1 cell line and more moderately in the hepatic cells. We also observed a decrease in lipolysis after bisphenol treatment of adipocytes, but only BPS was involved in the increase in glucose uptake and leptin production. These latter effects could be linked to the modulation of SREBP-1c, PPARγ, aP2 and ERRα and γ genes after exposure to BPA, whereas BPS seems to target the PGC1α and the ERRγ genes. The findings suggest that both BPA and BPS could be involved in obesity and steatosis processes, but through two different metabolic pathways.
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495
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Zhou NA, Lutovsky AC, Andaker GL, Ferguson JF, Gough HL. Kinetics modeling predicts bioaugmentation with Sphingomonad cultures as a viable technology for enhanced pharmaceutical and personal care products removal during wastewater treatment. Bioresour Technol 2014; 166:158-67. [PMID: 24907575 DOI: 10.1016/j.biortech.2014.05.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Revised: 05/07/2014] [Accepted: 05/11/2014] [Indexed: 05/03/2023]
Abstract
Pharmaceutical and personal care products (PPCPs) discharged with wastewater treatment effluents are a surface water quality concern. PPCPs are partially removed during wastewater treatment and biological transformation is an important removal mechanism. To investigate the potential for enhanced PPCP removal using bioaugmentation, bacteria were previously isolated from activated sludge capable of degrading PPCPs to ng/L concentrations. This study examined the degradation kinetics of triclosan and bisphenol A by five of these bacteria, both in pure culture and when augmented to activated sludge. Sorption coefficients were determined to account for the influence of partitioning during bioremoval. When the bacteria were added to activated sludge, degradation increased. Experimentally determined kinetic parameters were used to model a full-scale continuous treatment process, showing that low biomass could achieve reduced effluent PPCP concentrations. These results demonstrated that bioaugmentation may improve PPCP removal using established wastewater infrastructure under conditions of high solids partitioning.
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Affiliation(s)
- Nicolette A Zhou
- University of Washington, Department of Civil and Environmental Engineering, More Hall 201, Box 352700, Seattle, WA 98195-2700, USA
| | - April C Lutovsky
- University of Washington, Department of Civil and Environmental Engineering, More Hall 201, Box 352700, Seattle, WA 98195-2700, USA
| | - Greta L Andaker
- University of Washington, Department of Civil and Environmental Engineering, More Hall 201, Box 352700, Seattle, WA 98195-2700, USA
| | - John F Ferguson
- University of Washington, Department of Civil and Environmental Engineering, More Hall 201, Box 352700, Seattle, WA 98195-2700, USA
| | - Heidi L Gough
- University of Washington, Department of Civil and Environmental Engineering, More Hall 201, Box 352700, Seattle, WA 98195-2700, USA.
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496
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Park Y, Sun Z, Ayoko GA, Frost RL. Bisphenol A sorption by organo-montmorillonite: implications for the removal of organic contaminants from water. Chemosphere 2014; 107:249-256. [PMID: 24412097 DOI: 10.1016/j.chemosphere.2013.12.050] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Revised: 12/09/2013] [Accepted: 12/18/2013] [Indexed: 05/15/2023]
Abstract
Remediation of bisphenol A (BPA) from aqueous solutions by adsorption using organoclays synthesized from montmorillonite (MMT) with different types of organic surfactant molecules was demonstrated. High adsorption capacities of the organoclays for the uptake of BPA were observed and these demonstrated their potential application as strong adsorbents for noxious organic water contaminants. The adsorption of BPA was significantly influenced by pH, with increased adsorption of BPA in acidic pH range. However, the organoclays intercalated with highly loaded surfactants and/or large surfactant molecules were less influenced by the pH of the environment and this was thought to be due to the shielding the negative charge from surfactant molecules and the development of more positive charge on the clay surface, which leads to the attraction of anionic BPA even at alkaline pH. The hydrophobic phase created by loaded surfactant molecules contributed to a partitioning phase, interacting with BPA molecules strongly through hydrophobic interaction. Pseudo-second order kinetic model and Langmuir isotherm provided the best fit for the adsorption of BPA onto the organoclays. In addition, the adsorption process was spontaneous and exothermic with lower temperature facilitating the adsorption of BPA onto the organoclays. The described process provides a potential pathway for the removal of BPA from contaminated waters.
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Affiliation(s)
- Yuri Park
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, GPO 2434, Brisbane, Queensland 4001, Australia
| | - Zhiming Sun
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, GPO 2434, Brisbane, Queensland 4001, Australia; School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083, PR China
| | - Godwin A Ayoko
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, GPO 2434, Brisbane, Queensland 4001, Australia.
| | - Ray L Frost
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, GPO 2434, Brisbane, Queensland 4001, Australia
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497
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Heffernan AL, Aylward LL, Samidurai AJ, Davies PSW, Toms LML, Sly PD, Mueller JF. Short term variability in urinary bisphenol A in Australian children. Environ Int 2014; 68:139-143. [PMID: 24727068 DOI: 10.1016/j.envint.2014.03.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Revised: 03/21/2014] [Accepted: 03/24/2014] [Indexed: 06/03/2023]
Abstract
Used frequently in food contact materials, bisphenol A (BPA) has been studied extensively in recent years, and ubiquitous exposure in the general population has been demonstrated worldwide. Characterizing within- and between-individual variability of BPA concentrations is important for characterizing exposure in biomonitoring studies, and this has been investigated previously in adults, but not in children. The aim of this study was to characterize the short-term variability of BPA in spot urine samples in young children. Children aged ≥2-<4 years (n=25) were recruited from an existing cohort in Queensland, Australia, and donated four spot urine samples each over a two day period. Samples were analysed for total BPA using isotope dilution online solid phase extraction-liquid chromatography-tandem mass spectrometry, and concentrations ranged from 0.53 to 74.5 ng/ml, with geometric mean and standard deviation of 2.70 ng/ml and 2.94 ng/ml, respectively. Sex and time of sample collection were not significant predictors of BPA concentration. The between-individual variability was approximately equal to the within-individual variability (ICC=0.51), and this ICC is somewhat higher than previously reported literature values. This may be the result of physiological or behavioural differences between children and adults or of the relatively short exposure window assessed. Using a bootstrapping methodology, a single sample resulted in correct tertile classification approximately 70% of the time. This study suggests that single spot samples obtained from young children provide a reliable characterization of absolute and relative exposure over the short time window studied, but this may not hold true over longer timeframes.
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Affiliation(s)
- Amy L Heffernan
- University of Queensland, National Research Centre for Environmental Toxicology (Entox), Coopers Plains, Queensland, Australia.
| | - L L Aylward
- University of Queensland, National Research Centre for Environmental Toxicology (Entox), Coopers Plains, Queensland, Australia; Summit Toxicology, LLP, Falls Church, VA, USA.
| | - A J Samidurai
- Children's Nutrition Research Centre, Queensland Children's Medical Research Institute, University of Queensland, Herston, Queensland, Australia.
| | - P S W Davies
- Children's Nutrition Research Centre, Queensland Children's Medical Research Institute, University of Queensland, Herston, Queensland, Australia.
| | - L M L Toms
- Queensland University of Technology, School of Clinical Sciences and Institute of Health and Biomedical Innovation, Brisbane, Queensland, Australia.
| | - P D Sly
- Children's Health and Environment Program, Queensland Children's Medical Research Institute, University of Queensland, Herston, Brisbane, Australia.
| | - J F Mueller
- University of Queensland, National Research Centre for Environmental Toxicology (Entox), Coopers Plains, Queensland, Australia.
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498
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Zhang W, Xiong B, Sun WF, An S, Lin KF, Guo MJ, Cui XH. Acute and chronic toxic effects of bisphenol A on Chlorella pyrenoidosa and Scenedesmus obliquus. Environ Toxicol 2014; 29:714-722. [PMID: 22887798 DOI: 10.1002/tox.21806] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2012] [Revised: 07/19/2012] [Accepted: 07/21/2012] [Indexed: 06/01/2023]
Abstract
The acute and chronic toxic effects of Bisphenol A (BPA) on Chlorella pyrenoidosa (C. pyrenoidosa) and Scenedesmus obliquus (S. obliquus) were not well understood. The indoor experiments were carried out to observe and analyze the BPA-induced changes. Results of the observations showed that in acute tests BPA could significantly inhibit the growth of both algae, whereas chronic exposure hardly displayed similar trend. Superoxide dismutase (SOD) and Catalase (CAT) activities of both algae were promoted in all the treatments. Chlorophyll a synthesis of the two algae exhibited similar inhibitory trend in short-term treatments, and in chronic tests C. pyrenoidosa hardly resulted in visible influence, whereas in contrast, dose-dependent inhibitory effects of S. obliquus could be clearly observed. The experimental results indicated that the growth and Chlorophyll a syntheses of S.obliquus were more sensitive in response to BPA than that of C. pyrenoidosa, whereas for SOD andCAT activities, C. pyrenoidosa was more susceptible. This research provides a basic understanding of BPA toxicity to aquatic organisms.
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Affiliation(s)
- Wei Zhang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, People's Republic of China; School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China; Shanghai Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology, Shanghai 200237, People's Republic of China
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499
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Simmons AL, Schlezinger JJ, Corkey BE. What Are We Putting in Our Food That Is Making Us Fat? Food Additives, Contaminants, and Other Putative Contributors to Obesity. Curr Obes Rep 2014; 3:273-85. [PMID: 25045594 PMCID: PMC4101898 DOI: 10.1007/s13679-014-0094-y] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The "chemical obesogen" hypothesis conjectures that synthetic, environmental contaminants are contributing to the global epidemic of obesity. In fact, intentional food additives (e.g., artificial sweeteners and colors, emulsifiers) and unintentional compounds (e.g., bisphenol A, pesticides) are largely unstudied in regard to their effects on overall metabolic homeostasis. With that said, many of these contaminants have been found to dysregulate endocrine function, insulin signaling, and/or adipocyte function. Although momentum for the chemical obesogen hypothesis is growing, supportive, evidence-based research is lacking. In order to identify noxious synthetic compounds in the environment out of the thousands of chemicals that are currently in use, tools and models from toxicology should be adopted (e.g., functional high throughput screening methods, zebrafish-based assays). Finally, mechanistic insight into obesogen-induced effects will be helpful in elucidating their role in the obesity epidemic as well as preventing and reversing their effects.
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Affiliation(s)
- Amber L Simmons
- Department of Medicine, Boston University Medical Center, 650 Albany St., Rm X810, Boston MA 02118, Tel.: 617-638-7088, Fax.: 617-638-7124,
| | - Jennifer J Schlezinger
- Department of Environmental Health, Boston University School of Public Health, 715 Albany St., Rm R405, Boston, MA 02118. Tel.: 617-638-6497 Fax.: 617-638-6463.
| | - Barbara E Corkey
- Department of Medicine, Boston University Medical Center, 650 Albany St., Rm X810, Boston MA 02118, Tel.: 617-638-7088, Fax.: 617-638-7124,
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500
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Zimmers SM, Browne EP, O'Keefe PW, Anderton DL, Kramer L, Reckhow DA, Arcaro KF. Determination of free Bisphenol A (BPA) concentrations in breast milk of U.S. women using a sensitive LC/MS/MS method. Chemosphere 2014; 104:237-43. [PMID: 24507723 DOI: 10.1016/j.chemosphere.2013.12.085] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Revised: 12/05/2013] [Accepted: 12/23/2013] [Indexed: 05/12/2023]
Abstract
Bisphenol A (BPA) is a synthetic, endocrine-disrupting compound. Free BPA has been detected in human samples indicating that humans are internally exposed to estrogenically active BPA. The purpose of this study was to develop a sensitive method to detect free BPA in human breast milk. BPA was isolated from the milk of 21 nursing mothers in the U.S. by solid-phase extraction. It was then derivatized to improve sensitivity and subsequently analyzed by ultra high performance liquid chromatography-tandem mass spectrometry. Free BPA was detected in 62% of the milk samples (≤ 0.22-10.8 ng mL(-1), median 0.68 ng mL(-1), mean 3.13 ng mL(-1)). No statistical difference in BPA concentrations was observed between women with a low or high Body Mass Index (BMI) (<30 (n=11) and>30 (n=10), respectively). However, there was a significant association between BPA concentration and race. Caucasian women had significantly higher levels of free BPA in their breast milk than non-Caucasian women (mean=4.44 (n=14) and 0.52 (n=7), respectively; p<0.05). The difference between races could be attributed to variations in exposure, lifestyle or metabolism and suggests that certain populations should take extra precautions to limit BPA exposure, particularly during pregnancy and lactation.
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Affiliation(s)
- Stephanie M Zimmers
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Life Sciences Laboratories, Room 240D, 240 Thatcher Road, Amherst, MA 01003, United States
| | - Eva P Browne
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Life Sciences Laboratories, Room 240D, 240 Thatcher Road, Amherst, MA 01003, United States
| | - Patrick W O'Keefe
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Life Sciences Laboratories, Room 240D, 240 Thatcher Road, Amherst, MA 01003, United States
| | - Douglas L Anderton
- Department of Sociology, University of South Carolina, Columbia, Sloan College, Room 322, Suite 321, 911 Pickens Street, Columbia, SC 29208, United States
| | - Lawrence Kramer
- Department of Civil & Environmental Engineering, University of Massachusetts, Amherst, 235 Marston Hall, Room 18, P.O. Box 35205, Amherst, MA 01003, United States
| | - David A Reckhow
- Department of Civil & Environmental Engineering, University of Massachusetts, Amherst, 235 Marston Hall, Room 18, P.O. Box 35205, Amherst, MA 01003, United States
| | - Kathleen F Arcaro
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Life Sciences Laboratories, Room 240D, 240 Thatcher Road, Amherst, MA 01003, United States.
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