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Maternal methyl donor supplementation during gestation counteracts bisphenol A–induced oxidative stress in sows and offspring. Nutrition 2018; 45:76-84. [DOI: 10.1016/j.nut.2017.03.012] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 02/28/2017] [Accepted: 03/30/2017] [Indexed: 01/14/2023]
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Suvorov A, Waxman DJ. Early programing of uterine tissue by bisphenol A: Critical evaluation of evidence from animal exposure studies. Reprod Toxicol 2015; 57:59-72. [PMID: 26028543 PMCID: PMC4550532 DOI: 10.1016/j.reprotox.2015.05.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Revised: 05/12/2015] [Accepted: 05/15/2015] [Indexed: 12/20/2022]
Abstract
Exposure to Bisphenol A (BPA) during the critical window of uterine development has been proposed to program the uterus for increased disease susceptibility based on well-documented effects of the potent xenoestrogen diethylstilbestrol. To investigate this proposal, we reviewed 37 studies of prenatal and/or perinatal BPA exposure in animal models and evaluated evidence for: molecular signatures of early BPA exposure; the development of adverse uterine health effects; and epigenetic changes linked to long-term dysregulation of uterine gene expression and health effects. We found substantial evidence for adult uterine effects of early BPA exposure. In contrast, experimental support for epigenetic actions of early BPA exposure is very limited, and largely consists of effects on Hoxa gene DNA methylation. Critical knowledge gaps were identified, including the need to fully characterize short-term and long-term uterine gene responses, interactions with estrogens and other endogenous hormones, and any long-lasting epigenetic signatures that impact adult disease.
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Affiliation(s)
- Alexander Suvorov
- Division of Cell and Molecular Biology, Department of Biology, Boston University, 5 Cummington Mall, Boston, MA 02215, USA; Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts-Amherst, 686-North Pleasant Str., Amherst, MA 01003-9303, USA
| | - David J Waxman
- Division of Cell and Molecular Biology, Department of Biology, Boston University, 5 Cummington Mall, Boston, MA 02215, USA.
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de Lm Solano M, Montagner CC, Vaccari C, Jardim WF, Anselmo-Franci JA, de Og Carolino R, Luvizutto JF, de A Umbuzeiro G, de Camargo JL. Potential endocrine disruptor activity of drinking water samples. ACTA ACUST UNITED AC 2015. [DOI: 10.4161/23273747.2014.983384] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Marize de Lm Solano
- Botucatu Medical School; São Paulo State University - UNESP; Botucatu, SP, Brazil
- School of Technology; University of Campinas- UNICAMP; Limeira, SP, Brazil
| | | | - Carolina Vaccari
- Botucatu Medical School; São Paulo State University - UNESP; Botucatu, SP, Brazil
| | - Wilson F Jardim
- Institute of Chemistry; University of Campinas- UNICAMP; Campinas, SP, Brazil
| | | | | | - João Fl Luvizutto
- Botucatu Medical School; São Paulo State University - UNESP; Botucatu, SP, Brazil
| | | | - João Lv de Camargo
- Botucatu Medical School; São Paulo State University - UNESP; Botucatu, SP, Brazil
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Visualized gene network reveals the novel target transcripts Sox2 and Pax6 of neuronal development in trans-placental exposure to bisphenol A. PLoS One 2014; 9:e100576. [PMID: 25051057 PMCID: PMC4106758 DOI: 10.1371/journal.pone.0100576] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Accepted: 05/26/2014] [Indexed: 12/12/2022] Open
Abstract
Background Bisphenol A (BPA) is a ubiquitous endocrine disrupting chemical in our daily life, and its health effect in response to prenatal exposure is still controversial. Early-life BPA exposure may impact brain development and contribute to childhood neurological disorders. The aim of the present study was to investigate molecular target genes of neuronal development in trans-placental exposure to BPA. Methodology A meta-analysis of three public microarray datasets was performed to screen for differentially expressed genes (DEGs) in exposure to BPA. The candidate genes of neuronal development were identified from gene ontology analysis in a reconstructed neuronal sub-network, and their gene expressions were determined using real-time PCR in 20 umbilical cord blood samples dichotomized into high and low BPA level groups upon the median 16.8 nM. Principal Findings Among 36 neuronal transcripts sorted from DAVID ontology clusters of 457 DEGs using the analysis of Bioconductor limma package, we found two neuronal genes, sex determining region Y-box 2 (Sox2) and paired box 6 (Pax6), had preferentially down-regulated expression (Bonferroni correction p-value <10−4 and log2-transformed fold change ≤−1.2) in response to BPA exposure. Fetal cord blood samples had the obviously attenuated gene expression of Sox2 and Pax6 in high BPA group referred to low BPA group. Visualized gene network of Cytoscape analysis showed that Sox2 and Pax6 which were contributed to neural precursor cell proliferation and neuronal differentiation might be down-regulated through sonic hedgehog (Shh), vascular endothelial growth factor A (VEGFA) and Notch signaling. Conclusions These results indicated that trans-placental BPA exposure down-regulated gene expression of Sox2 and Pax6 potentially underlying the adverse effect on childhood neuronal development.
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Kim S, An BS, Yang H, Jeung EB. Effects of octylphenol and bisphenol A on the expression of calcium transport genes in the mouse duodenum and kidney during pregnancy. Toxicology 2013; 303:99-106. [DOI: 10.1016/j.tox.2012.10.023] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2012] [Revised: 10/22/2012] [Accepted: 10/30/2012] [Indexed: 11/29/2022]
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Gene alterations of ovarian cancer cells expressing estrogen receptors by estrogen and bisphenol a using microarray analysis. Lab Anim Res 2011; 27:99-107. [PMID: 21826169 PMCID: PMC3145995 DOI: 10.5625/lar.2011.27.2.99] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2011] [Revised: 05/28/2011] [Accepted: 05/31/2011] [Indexed: 11/25/2022] Open
Abstract
Since endocrine disrupting chemicals (EDCs) may interfere with the endocrine system(s) of our body and have an estrogenicity, we evaluated the effect(s) of bisphenol A (BPA) on the transcriptional levels of altered genes in estrogen receptor (ER)-positive BG-1 ovarian cancer cells by microarray and real-time polymerase-chain reaction. In this study, treatment with 17β-estradiol (E2) or BPA increased mRNA levels of E2-responsive genes related to apoptosis, cancer and cell cycle, signal transduction and nucleic acid binding etc. In parallel with their microarray data, the mRNA levels of some altered genes including RAB31_MEMBER RAS ONCOGENE FAMILY (U59877), CYCLIN D1 (X59798), CYCLIN-DEPENDENT KINASE 4 (U37022), IGF-BINDING PROTEIN 4 (U20982), and ANTI-MULLERIAN HORMONE (NM_000479) were significantly induced by E2 or BPA in this cell model. These results indicate that BPA in parallel with E2 induced the transcriptional levels of E2-responsive genes in an estrogen receptor (ER)-positive BG-1 cells. In conclusion, these microarray and real-time polymerase-chain reaction results indicate that BPA, a potential weak estrogen, may have estrogenic effect by regulating E2-responsive genes in ER-positive BG-1 cells and BG-1 cells would be the best in vitro model to detect these estrogenic EDCs.
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The roles of cellular reactive oxygen species, oxidative stress and antioxidants in pregnancy outcomes. Int J Biochem Cell Biol 2010; 42:1634-50. [DOI: 10.1016/j.biocel.2010.06.001] [Citation(s) in RCA: 441] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2010] [Revised: 05/13/2010] [Accepted: 06/01/2010] [Indexed: 12/18/2022]
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Dang VH, Nguyen TH, Lee GS, Choi KC, Jeung EB. In vitro exposure to xenoestrogens induces growth hormone transcription and release via estrogen receptor-dependent pathways in rat pituitary GH3 cells. Steroids 2009; 74:707-14. [PMID: 19463694 DOI: 10.1016/j.steroids.2009.03.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2008] [Revised: 02/07/2009] [Accepted: 03/10/2009] [Indexed: 12/21/2022]
Abstract
In this study, we employed an in vitro model to examine the effects of endocrine disruptors (EDs) in the regulation of growth hormone (GH) gene, an important hormone in growth, development and body composition. The rat pituitary cells, GH3, were treated with alkyl-phenols (APs), i.e., 4-tert-octyl-phenol (OP), p-nonyl-phenol (NP) or bisphenol A (BPA) for 24h in a dose-dependent manner (10(-5), 10(-6) and 10(-7)M) and in a time-dependent fashion (1, 3, 6, 12 and 24h) at a high concentration (10(-5)M). An anti-estrogen, ICI 182,780, was used to examine the potential involvement of estrogen receptor (ER) in the induction of GH by EDs through an ER-mediated pathway. Treatment with OP, NP and BPA induced a significant increase in GH gene expression at high and medium doses at 24h. ED-exposure induced a marked increase in GH gene transcription as early as 6h and peaked at 12h. Co-treatment with ICI 182,780 significantly attenuated ED-induced GH expression in GH3 cells. Interestingly, the level of in vitro GH release was significantly increased at 24h in response to OP, NP or BPA, whereas co-treatment with ICI 182,780 significantly reversed ED-induced GH secretion, indicating that ER may take part in both GH gene transcription and its release in these cells. In addition, the activation of extracellular signal-regulated kinases (ERKs), protein kinases B (Akt) or G protein in response to OP, NP or BPA at 24h was observed in this study. Exposure to these APs resulted in a rapid and significant activation of ERK phosphorylation, reflecting that EDs-induced response may involve both genomic and non-genomic pathways in these cells. Taken together, these results may provide new insight into the mode of ED-induced action in GH gene regulation as well as the biological pathway underlying these molecular events.
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Affiliation(s)
- Vu Hoang Dang
- Laboratory of Veterinary Biochemistry and Molecular Biology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 361-763, Republic of Korea
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Ko SH, Lee GS, Vo TTB, Jung EM, Choi KC, Cheung KW, Kim JW, Park JG, Oh GT, Jeung EB. Dietary calcium and 1,25-dihydroxyvitamin D3 regulate transcription of calcium transporter genes in calbindin-D9k knockout mice. J Reprod Dev 2008; 55:137-42. [PMID: 19106481 DOI: 10.1262/jrd.20139] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The effect(s) of oral calcium and vitamin D(3) were examined on the expression of duodenal and renal active calcium transport genes, i.e., calbindin-D9k (CaBP-9k) and calbindin-D28k (CaBP-28k), transient receptor potential cation channels (TRPV5 and TRPV6), Na(+)/Ca(2+) exchanger 1 (NCX1) and plasma membrane calcium ATPase 1b (PMCA1b), in CaBP-9k KO mice. Wild-type (WT) and KO mice were provided with calcium and vitamin D(3)-deficient diets for 10 weeks. The deficient diet significantly decreased body weights compared with the normal diet groups. The serum calcium concentration of the WT mice was decreased by the deficient diet but was unchanged in the KO mice. The deficient diet significantly increased duodenal transcription of CaBP-9k and TRPV6 in the WT mice, but no alteration was observed in the KO mice. In the kidney, the deficient diet significantly increased renal transcripts of CaBP-9k, TRPV6, PMCA1b, CaBP-28k and TRPV5 in the WT mice but did not alter calcium-relating genes in the KO mice. Two potential mediators of calcium-processing genes, vitamin D receptor (VDR) and parathyroid hormone receptor (PTHR), have been suggested to be useful for elucidating these differential regulations in the calcium-related genes of the KO mice. Expression of VDR was not significantly affected by diet or the KO mutation. Renal PTHR mRNA levels were reduced by the diet, and reduced expression was also seen in the KO mice given the normal diet. Taken together, these results suggest that the active calcium transporting genes in KO mice may have resistance to the deficiency diet of calcium and vitamin D(3).
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Affiliation(s)
- Sang-Hwan Ko
- Laboratory of Veterinary Biochemistry and Molecular Biology, College of Veterinary Medicine, Chungbuk National University, Chungbuk, Korea
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Chapin RE, Adams J, Boekelheide K, Gray LE, Hayward SW, Lees PSJ, McIntyre BS, Portier KM, Schnorr TM, Selevan SG, Vandenbergh JG, Woskie SR. NTP-CERHR expert panel report on the reproductive and developmental toxicity of bisphenol A. ACTA ACUST UNITED AC 2008; 83:157-395. [PMID: 18613034 DOI: 10.1002/bdrb.20147] [Citation(s) in RCA: 301] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Dang VH, Choi KC, Hyun SH, Jeung EB. Analysis of gene expression profiles in the offspring of rats following maternal exposure to xenoestrogens. Reprod Toxicol 2007; 23:42-54. [PMID: 17011747 DOI: 10.1016/j.reprotox.2006.08.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2006] [Revised: 08/25/2006] [Accepted: 08/29/2006] [Indexed: 01/04/2023]
Abstract
Many environmental chemicals are known endocrine disruptors (EDs). These have the potential to alter endocrine systems via various mechanisms that include binding to hormone receptors, thereby either mimicking or blocking the hormone actions and causing abnormal gene expression. Here, to elucidate the molecular mechanism(s) underlying the detrimental effects associated with the estrogenicity of these chemicals, we determined whether gene profiles were altered in rats exposed to 4-tert-octyphenol (OP) and diethylstilbestrol (DES) in utero. Pregnant rats were treated with a high dose of OP (600 mg/kg BW per day) or DES (500 microg/kg BW per day) at gestational days (GD) 17, 18 and 19. Both dams and neonates were euthanized at lactation day (LD) 5. The transcript profiles of uterine tissue were compared in treated versus control in both maternal and neonatal sites using cDNA microarray to determine the expression levels of approximately 13,000 genes and expressed sequence tags (ESTs). The expression levels of some known estrogen-responsive genes, i.e., complement component 3, epidermal growth factor receptor or c-fos oncogene and calbindin 3, as well as some other randomly selected genes, including general transcription factor IIa, transcription factor 4 and lymphocyte specific 1, were increased by OP and/or DES treatment in the uteri of both maternal and neonate groups. However, the magnitude of these alterations in gene expression differed markedly between dams and neonates, most likely reflecting the temporal susceptibility of the reproductive tract to estrogenic chemicals. Importantly, the altered gene patterns identified by microarray analysis were confirmed by RT-PCR and real-time RT-PCR. Fifteen primers were designed to amplify specific altered genes. These genes were selected for validation because of their markedly increased expression levels and they were classified on the basis of gene ontology. Overall, a high correlation was observed between microarray and real-time PCR data. Taken together, these results indicate that placental exposure to OP or DES may cause temporal changes in gene expression in the uteri of dams and neonates. Moreover, these findings may provide useful indicators of the adverse effects of EDs and prove particularly important in elucidating the effects of xenoestrogens on estrogen-responsive tissues, such as the developing reproductive tract.
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Affiliation(s)
- Vu Hoang Dang
- Laboratory of Veterinary Biochemistry and Molecular Biology, College of Veterinary Medicine, Research Institute of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 361-763, Republic of Korea
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Shin JH, Moon HJ, Kang IH, Kim TS, Lee SJ, Oh JY, Lee YJ, Hong EJ, Jeung EB, Han SY. Calbindin-D9k mRNA expression in the rat uterus following exposure to methoxychlor: a comparison of oral and subcutaneous exposure. J Reprod Dev 2006; 53:179-88. [PMID: 17077578 DOI: 10.1262/jrd.18054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Calbindin-D(9k) (CaBP-9k) is a cytosolic calcium-binding protein that is induced by estrogenic compounds possibly through estrogen receptors. We compared CaBP-9k mRNA expression in the uterus with uterotrophic response in immature rats exposed to methoxychlor (MC), an environmental chemical with estrogenic activity. MC was orally or subcutaneously administered to 3-week-old female Sprague-Dawley rats for 3 days. The weights of the uterus and vagina significantly increased in the oral treatment group at a dose of 50, 100 and 200 mg/kg, but those of the subcutaneous (SC) treatment group only increased at 200 mg/kg. Northern blot analysis showed that CaBP-9k mRNA expression was significantly induced in a dose-dependent manner at doses of 50, 100 and 200 mg/kg/day in the oral treatment group. SC administration of MC induced significant expression at only a dose of 200 mg/kg/day; this was similar to the uterotrophic response. MC has an estrogenic effect on the uterus as shown by the increase in weight and induction of CaBP-9k mRNA expression, which were much greater following exposure via oral gavage than via the SC route. The strong correlation between the results of in vivo uterotrophic assay and CaBP-9k mRNA expression suggests that CaBP-9k mRNA expression in the rat uterus may be used as an early gene marker for detection of the estrogenic effects of putative environmental chemicals.
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Affiliation(s)
- Jae-Ho Shin
- Endocrine Toxicology Division, National Institute of Toxicological Research, Korea Food and Drug Administration, Seoul, Korea.
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Choi KC, Leung PCK, Jeung EB. Biology and physiology of Calbindin-D9k in female reproductive tissues: involvement of steroids and endocrine disruptors. Reprod Biol Endocrinol 2005; 3:66. [PMID: 16288660 PMCID: PMC1315327 DOI: 10.1186/1477-7827-3-66] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2005] [Accepted: 11/16/2005] [Indexed: 01/11/2023] Open
Abstract
Although Calbindin-D9k (CaBP-9k), a cytosolic calcium binding protein which has calcium binding sites, is expressed in various tissues, i.e., intestine, uterus, and placenta, potential roles of this gene and its protein are not clearly understood. Uterine CaBP-9k may be involved in controlling myometrial activity related with intracellular calcium level and is not under the control of vitamin D despite the presence of vitamin D receptors. But, it is under the control of the sex steroid hormones, estrogen (E2) and progesterone (P4), in female reproductive systems including the uterus and placenta. Thus, in this review, we summarize recent research literature in regards to the expression and regulation of CaBP-9k in mammals and introduce the research data of recent studies by us and others.
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Affiliation(s)
- Kyung-Chul Choi
- Department of Obstetrics and Gynecology, British Columbia Children's and Women's Hospital, Child and Family Research Institute, University of British Columbia, Vancouver, BC V6H 3V5 Canada
| | - Peter CK Leung
- Department of Obstetrics and Gynecology, British Columbia Children's and Women's Hospital, Child and Family Research Institute, University of British Columbia, Vancouver, BC V6H 3V5 Canada
| | - Eui-Bae Jeung
- Laboratory of Veterinary Biochemistry and Molecular Biology, College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, 361-763 Republic of Korea
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