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Ruiz TFR, Grigio V, Ferrato LJ, de Souza LG, Colleta SJ, Amaro GM, Góes RM, Vilamaior PSL, Leonel ECR, Taboga SR. Impairment of steroidogenesis and follicle development after bisphenol A exposure during pregnancy and lactation in the ovaries of Mongolian gerbils aged females. Mol Cell Endocrinol 2023; 566-567:111892. [PMID: 36813021 DOI: 10.1016/j.mce.2023.111892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/08/2023] [Accepted: 02/19/2023] [Indexed: 02/24/2023]
Abstract
The ovaries regulate fertility and hormonal control in females, and aging is a crucial factor in this process, when ovarian function is drastically impacted. Exogenous endocrine disruptors may accelerate this process, acting as the main agents in decreased female fertility and hormonal imbalance, since they impact different features related to reproduction. In the present study, we demonstrate the implications of exposure of adult mothers to the endocrine disruptor bisphenol A (BPA) during pregnancy and lactation on their ovarian function during the transition to later in life (aging). The follicle population of BPA exposed ovaries showed impairment in the development of follicles to the mature stages, with growing follicles being halted in the early stages. Atretic and early-atretic follicles were also enhanced. Expression of estrogen and androgen receptors in the follicle population demonstrated impairment in signaling function: ERβ was highly expressed in follicles from BPA exposed females, which also showed a higher incidence of early atresia of developed follicles. ERβ1 wild-type isoform was also enhanced in BPA-exposed ovaries, compared to its variant isoforms. In addition, steroidogenesis was targeted by BPA exposure: aromatase and 17-β-HSD were reduced, whereas 5-α reductase was enhanced. This modulation was reflected in serum levels of estradiol and testosterone, which decreased in BPA-exposed females. Imbalances in steroidogenesis impair the development of follicles and play an important role in follicular atresia. Our study demonstrated that BPA exposure in two windows of susceptibility - gestation and lactation - had implications during aging, enhancing perimenopausal and infertile features.
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Affiliation(s)
- Thalles F R Ruiz
- Institute of Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil.
| | - Vitor Grigio
- Department of Biological Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (UNESP), São José do Rio Preto, São Paulo, Brazil
| | - Luara J Ferrato
- Department of Biological Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (UNESP), São José do Rio Preto, São Paulo, Brazil
| | - Lorena G de Souza
- Department of Biological Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (UNESP), São José do Rio Preto, São Paulo, Brazil
| | - Simone J Colleta
- Department of Biological Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (UNESP), São José do Rio Preto, São Paulo, Brazil
| | - Gustavo M Amaro
- Department of Biological Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (UNESP), São José do Rio Preto, São Paulo, Brazil
| | - Rejane M Góes
- Department of Biological Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (UNESP), São José do Rio Preto, São Paulo, Brazil
| | - Patrícia S L Vilamaior
- Department of Biological Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (UNESP), São José do Rio Preto, São Paulo, Brazil
| | - Ellen C R Leonel
- Department of Histology, Embryology and Cell Biology, Institute of Biological Sciences (ICB III), Federal University of Goiás (UFG), Goiânia, Goiás, Brazil
| | - Sebastião R Taboga
- Institute of Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil; Department of Biological Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (UNESP), São José do Rio Preto, São Paulo, Brazil.
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Castillo LY, Ríos-Carrillo J, González-Orozco JC, Camacho-Arroyo I, Morin JP, Zepeda RC, Roldán-Roldán G. Juvenile Exposure to BPA Alters the Estrous Cycle and Differentially Increases Anxiety-like Behavior and Brain Gene Expression in Adult Male and Female Rats. TOXICS 2022; 10:513. [PMID: 36136478 PMCID: PMC9505797 DOI: 10.3390/toxics10090513] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 08/20/2022] [Accepted: 08/25/2022] [Indexed: 06/16/2023]
Abstract
Perinatal exposure to bisphenol A (BPA) in murine models has been reported to affect social behavior and increase anxiety. However, there is little information about the effects of BPA exposure during puberty, a period in which sex hormones influence the maturation and differentiation of the brain. In this work, we evaluated the effect of BPA administration during the juvenile stage (PND 21-50) on anxiety in male and female rats. Newly weaned Wistar rats were treated with BPA (0, 50, or 500 µg/kg/day) for 30 days. To compare the intra- and inter-sex behavioral profiles, rats were evaluated using four different anxiety models: the Open field test (OFT), the Elevated plus maze (EPM), the Light-dark box test (LDBT), and the Defensive burying test (DBT). Males exhibited a clear-cut anxious profile at both doses in all four tests, while no clear behavioral effect of BPA exposure was observed in female rats. The latter showed an altered estrous cycle that initiated earlier in life and had a shorter duration, with the estrous phase predominating. Moreover, the expression of ESR1, ESR2, GABRA1, GRIN1, GR, MR, and AR genes increased in the hippocampus and hypothalamus of male rats treated with 50 µg/kg, but not in females. Our results indicate that BPA consistently induces a higher anxiety profile in male than in female rats, as evidenced predominantly by an increase in passive-coping behaviors and changes in brain gene expression, highlighting the importance of sex in peripubertal behavioral toxicology studies.
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Affiliation(s)
- Laura Yesenia Castillo
- Behavioral Neurobiology Laboratory, Department of Physiology, Faculty of Medicine, National Autonomous University of Mexico, Mexico City 04510, Mexico
- Comprehensive Biomedicine and Health Laboratory, Biomedical Research Center, Veracruzana University, Xalapa 91190, Mexico
| | - Jorge Ríos-Carrillo
- Behavioral Neurobiology Laboratory, Department of Physiology, Faculty of Medicine, National Autonomous University of Mexico, Mexico City 04510, Mexico
| | - Juan Carlos González-Orozco
- Unidad de Investigación en Reproducción Humana, Instituto Nacional de Perinatología, Facultad de Química, Universidad Nacional Autónoma de México, CDMX, Mexico City 04510, Mexico
| | - Ignacio Camacho-Arroyo
- Unidad de Investigación en Reproducción Humana, Instituto Nacional de Perinatología, Facultad de Química, Universidad Nacional Autónoma de México, CDMX, Mexico City 04510, Mexico
| | - Jean-Pascal Morin
- Behavioral Neurobiology Laboratory, Department of Physiology, Faculty of Medicine, National Autonomous University of Mexico, Mexico City 04510, Mexico
| | - Rossana C. Zepeda
- Comprehensive Biomedicine and Health Laboratory, Biomedical Research Center, Veracruzana University, Xalapa 91190, Mexico
| | - Gabriel Roldán-Roldán
- Behavioral Neurobiology Laboratory, Department of Physiology, Faculty of Medicine, National Autonomous University of Mexico, Mexico City 04510, Mexico
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Huang R, Li J, Liao M, Ma L, Laurent I, Lin X, Zhang Y, Gao R, Ding Y, Xiao X. Combinational exposure to Bisphenol A and a high-fat diet causes trans-generational Malfunction of the female reproductive system in mice. Mol Cell Endocrinol 2022; 541:111507. [PMID: 34785282 DOI: 10.1016/j.mce.2021.111507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 11/10/2021] [Accepted: 11/11/2021] [Indexed: 11/16/2022]
Abstract
Bisphenol A (BPA) is a common endocrine disruptor and a high-fat diet (HFD) also affects fertility. However, little is known about the long-term consequences of simultaneous exposure to BPA and a HFD on reproductive health. Herein, we assessed the effects of maternal exposure to BPA in combination with a HFD on reproductive function in subsequent generations of female mice and evaluated its effects on the hypothalamic-pituitary-gonadal axis. We found that the combination of maternal exposure to BPA and a HFD led to increased urine BPA levels, precocious puberty, altered estrous cyclicity, decreased follicle numbers, and altered hypothalamic Kiss1 methylation status in F1 and F2 mice. Therefore, we demonstrated that maternal exposure to BPA in combination with a HFD exerts a trans-generational effect on female reproduction.
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Affiliation(s)
- Rongfeng Huang
- Department of Obstetrics, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China; Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China; State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China; The Chongqing Key Laboratory of Translational Medicine in Major Metabolic Diseases, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jiayu Li
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China; The Chongqing Key Laboratory of Translational Medicine in Major Metabolic Diseases, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Maolin Liao
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China; The Chongqing Key Laboratory of Translational Medicine in Major Metabolic Diseases, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Li Ma
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China; The Chongqing Key Laboratory of Translational Medicine in Major Metabolic Diseases, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Irakoze Laurent
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China; The Chongqing Key Laboratory of Translational Medicine in Major Metabolic Diseases, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xiaojing Lin
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China; The Chongqing Key Laboratory of Translational Medicine in Major Metabolic Diseases, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yunqi Zhang
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China; The Chongqing Key Laboratory of Translational Medicine in Major Metabolic Diseases, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Rufei Gao
- Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Yubin Ding
- Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Xiaoqiu Xiao
- Department of Obstetrics, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China; Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China; State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China; The Chongqing Key Laboratory of Translational Medicine in Major Metabolic Diseases, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
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Butler MC, Long CN, Kinkade JA, Green MT, Martin RE, Marshall BL, Willemse TE, Schenk AK, Mao J, Rosenfeld CS. Endocrine disruption of gene expression and microRNA profiles in hippocampus and hypothalamus of California mice: Association of gene expression changes with behavioural outcomes. J Neuroendocrinol 2020; 32:e12847. [PMID: 32297422 PMCID: PMC7207022 DOI: 10.1111/jne.12847] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 02/23/2020] [Accepted: 03/18/2020] [Indexed: 01/10/2023]
Abstract
The hypothalamus and hippocampus are sensitive to early exposure to endocrine disrupting chemicals (EDCs). Two EDCs that have raised particular concerns are bisphenol A (BPA), a widely prevalent chemical in many common household items, and genistein (GEN), a phyto-oestrogen present in soy and other plants. We hypothesised that early exposure to BPA or GEN may lead to permanent effects on gene expression profiles for both coding RNAs (mRNAs) and microRNAs (miRs), which can affect the translation of mRNAs. Such EDC-induced biomolecular changes may affect behavioural and metabolic patterns. California mice (Peromyscus californicus) male and female offspring were developmentally exposed via the maternal diet to BPA (5 mg kg-1 feed weight low dose [LD] and 50 mg kg-1 feed weight upper dose [UD]), GEN (250 mg kg-1 feed weight) or a phyto-oestrogen-free diet (AIN) control. Behavioural and metabolic tests were performed at 180 days of age. A quantitative polymerase chain reacttion analysis was performed for candidate mRNAs and miRs in the hypothalamus and hippocampus. LD BPA and GEN exposed California mice offspring showed socio-communication impairments. Hypothalamic Avp, Esr1, Kiss1 and Lepr were increased in LD BPA offspring. miR-153 was elevated but miR-181a was reduced in LD BPA offspring. miR-9 and miR-153 were increased in the hippocampi of LD BPA offspring, whereas GEN decreased hippocampal miR-7a and miR-153 expression. Correlation analyses revealed neural expression of miR-153 and miR-181a was associated with socio-communication deficits in LD BPA individuals. The findings reveal a cause for concern such that developmental exposure of BPA or GEN in California mice (and potentially by translation in humans) can lead to long standing neurobehavioural consequences.
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Affiliation(s)
- Mary C Butler
- Department of Chemistry, Truman State University, Kirksville, MO, USA
| | - Camryn N Long
- Christopher S Bond Life Sciences Center, University of Missouri, Columbia, MO, USA
- Biomedical Sciences, University of Missouri, Columbia, MO, USA
| | - Jessica A Kinkade
- Christopher S Bond Life Sciences Center, University of Missouri, Columbia, MO, USA
- Biomedical Sciences, University of Missouri, Columbia, MO, USA
| | - Madison T Green
- Christopher S Bond Life Sciences Center, University of Missouri, Columbia, MO, USA
- Biomedical Sciences, University of Missouri, Columbia, MO, USA
| | - Rachel E Martin
- Christopher S Bond Life Sciences Center, University of Missouri, Columbia, MO, USA
- Biomedical Sciences, University of Missouri, Columbia, MO, USA
| | - Brittney L Marshall
- Christopher S Bond Life Sciences Center, University of Missouri, Columbia, MO, USA
- Biomedical Sciences, University of Missouri, Columbia, MO, USA
| | - Tess E Willemse
- Christopher S Bond Life Sciences Center, University of Missouri, Columbia, MO, USA
- Biomedical Sciences, University of Missouri, Columbia, MO, USA
| | | | - Jiude Mao
- Christopher S Bond Life Sciences Center, University of Missouri, Columbia, MO, USA
- Biomedical Sciences, University of Missouri, Columbia, MO, USA
| | - Cheryl S Rosenfeld
- Christopher S Bond Life Sciences Center, University of Missouri, Columbia, MO, USA
- Biomedical Sciences, University of Missouri, Columbia, MO, USA
- Informatics Institute, University of Missouri, Columbia, MO, USA
- Thompson Center for Autism and Neurobehavioral Disorders, University of Missouri, Columbia, MO, USA
- Genetics Area Program, University of Missouri, Columbia, MO, USA
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Co-exposure to endocrine disruptors: effect of bisphenol A and soy extract on glucose homeostasis and related metabolic disorders in male mice. Endocr Regul 2019; 52:76-84. [PMID: 29715189 DOI: 10.2478/enr-2018-0009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVES Bisphenol A (BPA) is a xenoestrogen, which is commonly used as a monomer of polycarbonate plastics food containers and epoxy resins. Little is known about the interaction effects between xeno- and phyto- estrogens on glucose homeostasis or other metabolic disorders. The aim of this study was to examine effects of individual or combined exposure to low doses of BPA and soy extract on glucose metabolism in mice with the goal to establish its potential mechanisms. METHODS Fifty-four male mice were randomly divided into six groups. Mice were treated with soy extract at 60 or 150 mg/kg by daily gavage with or without subcutaneously administration of BPA (100 μg/kg/day) for four weeks at the same time, while the control group received a vehicle. Serum levels of fasting glucose, insulin, adiponectin, testosterone, malondialdehyde (MDA), and total antioxidant capacity (TAC) were measured. Homeostatic model assessment-β cell function (HOMA-β) index was also determined. RESULTS BPA exposure induced hyperglycemia and significantly reduced HOMA-β, serum levels of insulin, adiponectin, testosterone, and TAC and noticeably enhanced MDA in BPA group compared to control one. While treatment with soy extract in high dose (150 mg/kg) significantly decreased the levels of fasting blood glucose and MDA and notably improved the serum levels of insulin, HOMA-β, and TAC compared to BPA group. CONCLUSION Soy extract may protect against some adverse effects of BPA. These findings represent the first report suggesting a potential effect between soy extract and BPA in low doses, however, further studies are needed to confirm these results.
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Johnson SA, Ellersieck MR, Rosenfeld CS. Hypothalamic gene expression changes in F 1 California mice ( Peromyscus californicus) parents developmentally exposed to bisphenol A or ethinyl estradiol. Heliyon 2018; 4:e00672. [PMID: 30003164 PMCID: PMC6039852 DOI: 10.1016/j.heliyon.2018.e00672] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 06/14/2018] [Accepted: 06/26/2018] [Indexed: 02/07/2023] Open
Abstract
Bisphenol A (BPA) is a pervasive industrial chemical used in many common household items. To examine how early exposure to BPA and ethinyl estradiol (EE, estrogen in birth control pill) might affect biparental care, effects of these chemicals in male and female California mice (Peromyscus californicus), who are monogamous and biparental, were examined. California mice exposed during pre- and peri-natal life to BPA at an environmentally relevant concentration or EE show later disrupted biparental behaviors. The hypothalamus is an important brain region for regulating parental behaviors. Thus, it was hypothesized compromised biparental care might be partially due to hypothalamic gene alterations. To address this question, brains from F1 parenting female and male California mice from controls, BPA- and EE-exposed groups were collected at postnatal day (PND) 2, and RNA was isolated from hypothalamic micropunches. Gene expression was examined in this brain region for genes affected by BPA exposure and attributed to governing parental care in rodents and humans. BPA-exposed California mice showed increased hypothalamic expression of Kiss1, Esr1 and Esr2 relative to AIN control and EE-exposed parents in the case of Esr2. Notably, current studies represent the first report to show that early exposure to BPA can induce longstanding effects on hypothalamic gene expression in parenting male and female rodents. Absence of such hypothalamic gene expression changes in EE-exposed parents indicates early BPA exposure may induce later transcriptomic effects through estrogen receptor-independent pathways. BPA-driven changes in hypothalamic function of California mice might contribute to decreased biparental investment, which could result in F2 multigenerational effects.
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Affiliation(s)
- Sarah A. Johnson
- Bond Life Sciences Center, University of Missouri, Columbia, MO 65211, USA
- Department of Biomedical Sciences, University of Missouri, Columbia, MO 65211, USA
- Department of Animal Sciences, University of Missouri, Columbia, MO 65211, USA
- Department of Gastroenterology, School of Medicine, University of Missouri, Columbia, MO 65211, USA
| | - Mark R. Ellersieck
- Agriculture Experimental Station-Statistics, University of Missouri, Columbia, MO 65211, USA
| | - Cheryl S. Rosenfeld
- Bond Life Sciences Center, University of Missouri, Columbia, MO 65211, USA
- Department of Biomedical Sciences, University of Missouri, Columbia, MO 65211, USA
- Genetics Area Program, University of Missouri, Columbia, MO 65211, USA
- Thompson Center for Autism and Neurobehavioral Disorders, University of Missouri, Columbia, MO 65211, USA
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Walker DM, Gore AC. Epigenetic impacts of endocrine disruptors in the brain. Front Neuroendocrinol 2017; 44:1-26. [PMID: 27663243 PMCID: PMC5429819 DOI: 10.1016/j.yfrne.2016.09.002] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 08/05/2016] [Accepted: 09/14/2016] [Indexed: 12/12/2022]
Abstract
The acquisition of reproductive competence is organized and activated by steroid hormones acting upon the hypothalamus during critical windows of development. This review describes the potential role of epigenetic processes, particularly DNA methylation, in the regulation of sexual differentiation of the hypothalamus by hormones. We examine disruption of these processes by endocrine-disrupting chemicals (EDCs) in an age-, sex-, and region-specific manner, focusing on how perinatal EDCs act through epigenetic mechanisms to reprogram DNA methylation and sex steroid hormone receptor expression throughout life. These receptors are necessary for brain sexual differentiation and their altered expression may underlie disrupted reproductive physiology and behavior. Finally, we review the literature on histone modifications and non-coding RNA involvement in brain sexual differentiation and their perturbation by EDCs. By putting these data into a sex and developmental context we conclude that perinatal EDC exposure alters the developmental trajectory of reproductive neuroendocrine systems in a sex-specific manner.
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Affiliation(s)
- Deena M Walker
- Fishberg Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, Box 1065, New York, NY 10029, USA.
| | - Andrea C Gore
- Division of Pharmacology and Toxicology, College of Pharmacy, The University of Texas at Austin, Austin, TX 78712, USA; Institute for Cellular and Molecular Biology, and The University of Texas at Austin, Austin, TX 78712, USA; Institute for Neuroscience, The University of Texas at Austin, Austin, TX 78712, USA
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Loutchanwoot P, Vortherms T, Jarry H. Evaluation of in vivo estrogenic potency of natural estrogen-active chemical, puerarin, on pituitary function in gonadectomized female rats. Life Sci 2016; 165:75-82. [PMID: 27615593 DOI: 10.1016/j.lfs.2016.09.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 08/26/2016] [Accepted: 09/06/2016] [Indexed: 11/29/2022]
Abstract
AIMS Previous research has revealed that puerarin, the major phytoestrogen in tuberous roots of Pueraria lobata and Pueraria mirifica, acts as a selective estrogen receptor modulator that displays predominantly estrogenic potential for health benefit. However, little is known about the estrogenic potency of puerarin in pituitary, especially in the rat model of postmenopausal females. MAIN METHODS Plasma prolactin and growth hormone levels as well as mRNA expression levels of pituitary estrogen-regulated genes, such as estrogen receptor (ER) subtypes alpha (ERα) and beta (ERβ), truncated ER product-1 (TERP-1) and -2 (TERP-2) and gonadotropin alpha subunit, were examined using radioimmunoassay and TaqMan® real-time PCR, respectively. The effects were compared with the potent ER agonist, 17β-estradiol-3-benzoate (E2B), and both substances were supplemented at low and high doses, i.e., 0.6 or 3g puerarin and 0.0043 or 0.0173g E2B per kilogram of phytoestrogens-free rat chow, and applied to ovariectomized rats (five groups; 11-12 rats per group) for 12weeks. KEY FINDINGS Puerarin possessed weak E2B-like activities on pituitary function by acting as ERβ and TERP-1/-2 agonists, which resulted in the downregulation and upregulation of ERβ and TERP-1/-2 mRNA expressions, respectively, and elevation of growth hormone levels. There were trends of decreased levels of alpha subunit mRNA transcripts and increased levels of prolactin in puerarin-treated rats as observed in E2B-treated animals. SIGNIFICANCE This is the first report in ovariectomized rats the effects of puerarin on somatotropes and pituitary estrogen-responsive mRNA expressions, which are very weakly estrogenic by acting through ERβ- and TERP-1/-2 mediated pathways.
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Affiliation(s)
- Panida Loutchanwoot
- Department of Biology, Faculty of Science, Mahasarakham University, Khamriang Sub-district, Kantharawichai District, Mahasarakham Province 44150, Thailand.
| | - Tina Vortherms
- Department of Endocrinology, Faculty of Medicine, University Medical Center Göttingen, Robert-Koch-Strasse 40, D-37075 Göttingen, Germany
| | - Hubertus Jarry
- Department of Endocrinology, Faculty of Medicine, University Medical Center Göttingen, Robert-Koch-Strasse 40, D-37075 Göttingen, Germany
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Franssen D, Gérard A, Hennuy B, Donneau AF, Bourguignon JP, Parent AS. Delayed Neuroendocrine Sexual Maturation in Female Rats After a Very Low Dose of Bisphenol A Through Altered GABAergic Neurotransmission and Opposing Effects of a High Dose. Endocrinology 2016; 157:1740-50. [PMID: 26950200 DOI: 10.1210/en.2015-1937] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Rat sexual maturation is preceded by a reduction of the interpulse interval (IPI) of GnRH neurosecretion. This work aims at studying disruption of that neuroendocrine event in females after early exposure to a very low dose of bisphenol A (BPA), a ubiquitous endocrine disrupting chemical. Female rats were exposed to vehicle or BPA 25 ng/kg·d, 25 μg/kg·d, or 5 mg/kg·d from postnatal day (PND)1 to PND5 or PND15. Exposure to 25 ng/kg·d of BPA for 5 or 15 days was followed by a delay in developmental reduction of GnRH IPI studied ex vivo on PND20. After 15 days of exposure to that low dose of BPA, vaginal opening tended to be delayed. In contrast, exposure to BPA 5 mg/kg·d for 15 days resulted in a premature reduction in GnRH IPI and a trend toward early vaginal opening. RNA sequencing analysis on PND20 indicated that exposure to BPA resulted in opposing dose effects on the mRNA expression of hypothalamic genes involved in gamma aminobutyric acid A (GABAA) neurotransmission. The study of GnRH secretion in vitro in the presence of GABAA receptor agonist/antagonist confirmed an increased or a reduced GABAergic tone after in vivo exposure to the very low or the high dose of BPA, respectively. Overall, we show for the first time that neonatal exposure to BPA leads to opposing dose-dependent effects on the neuroendocrine control of puberty in the female rat. A very low and environmentally relevant dose of BPA delays neuroendocrine maturation related to puberty through increased inhibitory GABAergic neurotransmission.
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Affiliation(s)
- Delphine Franssen
- Neuroendocrinology Unit (D.F., A.G., J.-P.B., A.-S.P.), Interdisciplinary Cluster for Applied Genoproteomics Neurosciences; Interdisciplinary Cluster for Applied Genoproteomics Transcriptomic Platform (B.H.); and Department of Public Health (A.-F.D.), Biostatistics Unit, University of Liège, Sart-Tilman, B-4000 Liège, Belgium; and Department of Pediatrics (A.G., J.-P.B., A.-S.P.), Centre Hospitalier Universitaire de Liège, B-4032 Chênée, Belgium
| | - Arlette Gérard
- Neuroendocrinology Unit (D.F., A.G., J.-P.B., A.-S.P.), Interdisciplinary Cluster for Applied Genoproteomics Neurosciences; Interdisciplinary Cluster for Applied Genoproteomics Transcriptomic Platform (B.H.); and Department of Public Health (A.-F.D.), Biostatistics Unit, University of Liège, Sart-Tilman, B-4000 Liège, Belgium; and Department of Pediatrics (A.G., J.-P.B., A.-S.P.), Centre Hospitalier Universitaire de Liège, B-4032 Chênée, Belgium
| | - Benoit Hennuy
- Neuroendocrinology Unit (D.F., A.G., J.-P.B., A.-S.P.), Interdisciplinary Cluster for Applied Genoproteomics Neurosciences; Interdisciplinary Cluster for Applied Genoproteomics Transcriptomic Platform (B.H.); and Department of Public Health (A.-F.D.), Biostatistics Unit, University of Liège, Sart-Tilman, B-4000 Liège, Belgium; and Department of Pediatrics (A.G., J.-P.B., A.-S.P.), Centre Hospitalier Universitaire de Liège, B-4032 Chênée, Belgium
| | - Anne-Françoise Donneau
- Neuroendocrinology Unit (D.F., A.G., J.-P.B., A.-S.P.), Interdisciplinary Cluster for Applied Genoproteomics Neurosciences; Interdisciplinary Cluster for Applied Genoproteomics Transcriptomic Platform (B.H.); and Department of Public Health (A.-F.D.), Biostatistics Unit, University of Liège, Sart-Tilman, B-4000 Liège, Belgium; and Department of Pediatrics (A.G., J.-P.B., A.-S.P.), Centre Hospitalier Universitaire de Liège, B-4032 Chênée, Belgium
| | - Jean-Pierre Bourguignon
- Neuroendocrinology Unit (D.F., A.G., J.-P.B., A.-S.P.), Interdisciplinary Cluster for Applied Genoproteomics Neurosciences; Interdisciplinary Cluster for Applied Genoproteomics Transcriptomic Platform (B.H.); and Department of Public Health (A.-F.D.), Biostatistics Unit, University of Liège, Sart-Tilman, B-4000 Liège, Belgium; and Department of Pediatrics (A.G., J.-P.B., A.-S.P.), Centre Hospitalier Universitaire de Liège, B-4032 Chênée, Belgium
| | - Anne-Simone Parent
- Neuroendocrinology Unit (D.F., A.G., J.-P.B., A.-S.P.), Interdisciplinary Cluster for Applied Genoproteomics Neurosciences; Interdisciplinary Cluster for Applied Genoproteomics Transcriptomic Platform (B.H.); and Department of Public Health (A.-F.D.), Biostatistics Unit, University of Liège, Sart-Tilman, B-4000 Liège, Belgium; and Department of Pediatrics (A.G., J.-P.B., A.-S.P.), Centre Hospitalier Universitaire de Liège, B-4032 Chênée, Belgium
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10
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Cacioppo JA, Koo Y, Lin PCP, Osmulski SA, Ko CD, Ko C. Generation of an estrogen receptor beta-iCre knock-in mouse. Genesis 2016; 54:38-52. [PMID: 26663382 DOI: 10.1002/dvg.22911] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Revised: 11/30/2015] [Accepted: 12/02/2015] [Indexed: 02/06/2023]
Abstract
A novel knock-in mouse that expresses codon-improved Cre recombinase (iCre) under regulation of the estrogen receptor beta (Esr2) promoter was developed for conditional deletion of genes and for the spatial and/or temporal localization of Esr2 expression. ESR2 is one of two classical nuclear estrogen receptors and displays a spatiotemporal expression pattern and functions that are different from the other estrogen receptor, ESR1. A cassette was constructed that contained iCre, a polyadenylation sequence, and a neomycin selection marker. This construct was used to insert iCre in front of the endogenous start codon of the Esr2 gene of a C57BL/6J embryonic stem cell line via homologous recombination. Resulting Esr2-iCre mice were bred with ROSA26-lacZ and Ai9-RFP reporter mice to visualize cells of functional iCre expression. Strong expression was observed in the ovary, the pituitary, the interstitium of the testes, the head and tail but not body of the epididymis, skeletal muscle, the coagulation gland (anterior prostate), the lung, and the preputial gland. Additional diffuse or patchy expression was observed in the cerebrum, the hypothalamus, the heart, the adrenal gland, the colon, the bladder, and the pads of the paws. Overall, Esr2-iCre mice will serve as a novel line for conditionally ablating genes in Esr2-expressing tissues, identifying novel Esr2-expressing cells, and differentiating the functions of ESR2 and ESR1.
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Affiliation(s)
- Joseph A Cacioppo
- Comparative Biosciences, College of Veterinary Medicine, University of Illinois, Urbana-Champaign, Illinois, 61802
| | - Yongbum Koo
- Comparative Biosciences, College of Veterinary Medicine, University of Illinois, Urbana-Champaign, Illinois, 61802.,School of Biological Sciences, Inje University, Gimhae, South Korea
| | - Po-Ching Patrick Lin
- Comparative Biosciences, College of Veterinary Medicine, University of Illinois, Urbana-Champaign, Illinois, 61802
| | - Sarah A Osmulski
- Comparative Biosciences, College of Veterinary Medicine, University of Illinois, Urbana-Champaign, Illinois, 61802
| | - Chunjoo D Ko
- Comparative Biosciences, College of Veterinary Medicine, University of Illinois, Urbana-Champaign, Illinois, 61802
| | - CheMyong Ko
- Comparative Biosciences, College of Veterinary Medicine, University of Illinois, Urbana-Champaign, Illinois, 61802
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11
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Gore AC, Chappell VA, Fenton SE, Flaws JA, Nadal A, Prins GS, Toppari J, Zoeller RT. EDC-2: The Endocrine Society's Second Scientific Statement on Endocrine-Disrupting Chemicals. Endocr Rev 2015; 36:E1-E150. [PMID: 26544531 PMCID: PMC4702494 DOI: 10.1210/er.2015-1010] [Citation(s) in RCA: 1292] [Impact Index Per Article: 143.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Accepted: 09/01/2015] [Indexed: 02/06/2023]
Abstract
The Endocrine Society's first Scientific Statement in 2009 provided a wake-up call to the scientific community about how environmental endocrine-disrupting chemicals (EDCs) affect health and disease. Five years later, a substantially larger body of literature has solidified our understanding of plausible mechanisms underlying EDC actions and how exposures in animals and humans-especially during development-may lay the foundations for disease later in life. At this point in history, we have much stronger knowledge about how EDCs alter gene-environment interactions via physiological, cellular, molecular, and epigenetic changes, thereby producing effects in exposed individuals as well as their descendants. Causal links between exposure and manifestation of disease are substantiated by experimental animal models and are consistent with correlative epidemiological data in humans. There are several caveats because differences in how experimental animal work is conducted can lead to difficulties in drawing broad conclusions, and we must continue to be cautious about inferring causality in humans. In this second Scientific Statement, we reviewed the literature on a subset of topics for which the translational evidence is strongest: 1) obesity and diabetes; 2) female reproduction; 3) male reproduction; 4) hormone-sensitive cancers in females; 5) prostate; 6) thyroid; and 7) neurodevelopment and neuroendocrine systems. Our inclusion criteria for studies were those conducted predominantly in the past 5 years deemed to be of high quality based on appropriate negative and positive control groups or populations, adequate sample size and experimental design, and mammalian animal studies with exposure levels in a range that was relevant to humans. We also focused on studies using the developmental origins of health and disease model. No report was excluded based on a positive or negative effect of the EDC exposure. The bulk of the results across the board strengthen the evidence for endocrine health-related actions of EDCs. Based on this much more complete understanding of the endocrine principles by which EDCs act, including nonmonotonic dose-responses, low-dose effects, and developmental vulnerability, these findings can be much better translated to human health. Armed with this information, researchers, physicians, and other healthcare providers can guide regulators and policymakers as they make responsible decisions.
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Affiliation(s)
- A C Gore
- Pharmacology and Toxicology (A.C.G.), College of Pharmacy, The University of Texas at Austin, Austin, Texas 78734; Division of the National Toxicology Program (V.A.C., S.E.F.), National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina 27709; Department of Comparative Biosciences (J.A.F.), University of Illinois at Urbana-Champaign, Urbana, Illinois 61802; Institute of Bioengineering and CIBERDEM (A.N.), Miguel Hernandez University of Elche, 03202 Elche, Alicante, Spain; Departments of Urology, Pathology, and Physiology & Biophysics (G.S.P.), College of Medicine, University of Illinois at Chicago, Chicago, Illinois 60612; Departments of Physiology and Pediatrics (J.T.), University of Turku and Turku University Hospital, 20520 Turku, Finland; and Biology Department (R.T.Z.), University of Massachusetts at Amherst, Amherst, Massachusetts 01003
| | - V A Chappell
- Pharmacology and Toxicology (A.C.G.), College of Pharmacy, The University of Texas at Austin, Austin, Texas 78734; Division of the National Toxicology Program (V.A.C., S.E.F.), National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina 27709; Department of Comparative Biosciences (J.A.F.), University of Illinois at Urbana-Champaign, Urbana, Illinois 61802; Institute of Bioengineering and CIBERDEM (A.N.), Miguel Hernandez University of Elche, 03202 Elche, Alicante, Spain; Departments of Urology, Pathology, and Physiology & Biophysics (G.S.P.), College of Medicine, University of Illinois at Chicago, Chicago, Illinois 60612; Departments of Physiology and Pediatrics (J.T.), University of Turku and Turku University Hospital, 20520 Turku, Finland; and Biology Department (R.T.Z.), University of Massachusetts at Amherst, Amherst, Massachusetts 01003
| | - S E Fenton
- Pharmacology and Toxicology (A.C.G.), College of Pharmacy, The University of Texas at Austin, Austin, Texas 78734; Division of the National Toxicology Program (V.A.C., S.E.F.), National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina 27709; Department of Comparative Biosciences (J.A.F.), University of Illinois at Urbana-Champaign, Urbana, Illinois 61802; Institute of Bioengineering and CIBERDEM (A.N.), Miguel Hernandez University of Elche, 03202 Elche, Alicante, Spain; Departments of Urology, Pathology, and Physiology & Biophysics (G.S.P.), College of Medicine, University of Illinois at Chicago, Chicago, Illinois 60612; Departments of Physiology and Pediatrics (J.T.), University of Turku and Turku University Hospital, 20520 Turku, Finland; and Biology Department (R.T.Z.), University of Massachusetts at Amherst, Amherst, Massachusetts 01003
| | - J A Flaws
- Pharmacology and Toxicology (A.C.G.), College of Pharmacy, The University of Texas at Austin, Austin, Texas 78734; Division of the National Toxicology Program (V.A.C., S.E.F.), National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina 27709; Department of Comparative Biosciences (J.A.F.), University of Illinois at Urbana-Champaign, Urbana, Illinois 61802; Institute of Bioengineering and CIBERDEM (A.N.), Miguel Hernandez University of Elche, 03202 Elche, Alicante, Spain; Departments of Urology, Pathology, and Physiology & Biophysics (G.S.P.), College of Medicine, University of Illinois at Chicago, Chicago, Illinois 60612; Departments of Physiology and Pediatrics (J.T.), University of Turku and Turku University Hospital, 20520 Turku, Finland; and Biology Department (R.T.Z.), University of Massachusetts at Amherst, Amherst, Massachusetts 01003
| | - A Nadal
- Pharmacology and Toxicology (A.C.G.), College of Pharmacy, The University of Texas at Austin, Austin, Texas 78734; Division of the National Toxicology Program (V.A.C., S.E.F.), National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina 27709; Department of Comparative Biosciences (J.A.F.), University of Illinois at Urbana-Champaign, Urbana, Illinois 61802; Institute of Bioengineering and CIBERDEM (A.N.), Miguel Hernandez University of Elche, 03202 Elche, Alicante, Spain; Departments of Urology, Pathology, and Physiology & Biophysics (G.S.P.), College of Medicine, University of Illinois at Chicago, Chicago, Illinois 60612; Departments of Physiology and Pediatrics (J.T.), University of Turku and Turku University Hospital, 20520 Turku, Finland; and Biology Department (R.T.Z.), University of Massachusetts at Amherst, Amherst, Massachusetts 01003
| | - G S Prins
- Pharmacology and Toxicology (A.C.G.), College of Pharmacy, The University of Texas at Austin, Austin, Texas 78734; Division of the National Toxicology Program (V.A.C., S.E.F.), National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina 27709; Department of Comparative Biosciences (J.A.F.), University of Illinois at Urbana-Champaign, Urbana, Illinois 61802; Institute of Bioengineering and CIBERDEM (A.N.), Miguel Hernandez University of Elche, 03202 Elche, Alicante, Spain; Departments of Urology, Pathology, and Physiology & Biophysics (G.S.P.), College of Medicine, University of Illinois at Chicago, Chicago, Illinois 60612; Departments of Physiology and Pediatrics (J.T.), University of Turku and Turku University Hospital, 20520 Turku, Finland; and Biology Department (R.T.Z.), University of Massachusetts at Amherst, Amherst, Massachusetts 01003
| | - J Toppari
- Pharmacology and Toxicology (A.C.G.), College of Pharmacy, The University of Texas at Austin, Austin, Texas 78734; Division of the National Toxicology Program (V.A.C., S.E.F.), National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina 27709; Department of Comparative Biosciences (J.A.F.), University of Illinois at Urbana-Champaign, Urbana, Illinois 61802; Institute of Bioengineering and CIBERDEM (A.N.), Miguel Hernandez University of Elche, 03202 Elche, Alicante, Spain; Departments of Urology, Pathology, and Physiology & Biophysics (G.S.P.), College of Medicine, University of Illinois at Chicago, Chicago, Illinois 60612; Departments of Physiology and Pediatrics (J.T.), University of Turku and Turku University Hospital, 20520 Turku, Finland; and Biology Department (R.T.Z.), University of Massachusetts at Amherst, Amherst, Massachusetts 01003
| | - R T Zoeller
- Pharmacology and Toxicology (A.C.G.), College of Pharmacy, The University of Texas at Austin, Austin, Texas 78734; Division of the National Toxicology Program (V.A.C., S.E.F.), National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina 27709; Department of Comparative Biosciences (J.A.F.), University of Illinois at Urbana-Champaign, Urbana, Illinois 61802; Institute of Bioengineering and CIBERDEM (A.N.), Miguel Hernandez University of Elche, 03202 Elche, Alicante, Spain; Departments of Urology, Pathology, and Physiology & Biophysics (G.S.P.), College of Medicine, University of Illinois at Chicago, Chicago, Illinois 60612; Departments of Physiology and Pediatrics (J.T.), University of Turku and Turku University Hospital, 20520 Turku, Finland; and Biology Department (R.T.Z.), University of Massachusetts at Amherst, Amherst, Massachusetts 01003
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12
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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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13
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Parent AS, Franssen D, Fudvoye J, Gérard A, Bourguignon JP. Developmental variations in environmental influences including endocrine disruptors on pubertal timing and neuroendocrine control: Revision of human observations and mechanistic insight from rodents. Front Neuroendocrinol 2015; 38:12-36. [PMID: 25592640 DOI: 10.1016/j.yfrne.2014.12.004] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Revised: 12/13/2014] [Accepted: 12/15/2014] [Indexed: 12/21/2022]
Abstract
Puberty presents remarkable individual differences in timing reaching over 5 years in humans. We put emphasis on the two edges of the age distribution of pubertal signs in humans and point to an extended distribution towards earliness for initial pubertal stages and towards lateness for final pubertal stages. Such distortion of distribution is a recent phenomenon. This suggests changing environmental influences including the possible role of nutrition, stress and endocrine disruptors. Our ability to assess neuroendocrine effects and mechanisms is very limited in humans. Using the rodent as a model, we examine the impact of environmental factors on the individual variations in pubertal timing and the possible underlying mechanisms. The capacity of environmental factors to shape functioning of the neuroendocrine system is thought to be maximal during fetal and early postnatal life and possibly less important when approaching the time of onset of puberty.
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Affiliation(s)
- Anne-Simone Parent
- Developmental Neuroendocrinology Unit, GIGA Neurosciences, University of Liège, Sart-Tilman, B-4000 Liège, Belgium; Department of Pediatrics, CHU de Liège, Rue de Gaillarmont 600, B-4032 Chênée, Belgium
| | - Delphine Franssen
- Developmental Neuroendocrinology Unit, GIGA Neurosciences, University of Liège, Sart-Tilman, B-4000 Liège, Belgium
| | - Julie Fudvoye
- Developmental Neuroendocrinology Unit, GIGA Neurosciences, University of Liège, Sart-Tilman, B-4000 Liège, Belgium; Department of Pediatrics, CHU de Liège, Rue de Gaillarmont 600, B-4032 Chênée, Belgium
| | - Arlette Gérard
- Developmental Neuroendocrinology Unit, GIGA Neurosciences, University of Liège, Sart-Tilman, B-4000 Liège, Belgium; Department of Pediatrics, CHU de Liège, Rue de Gaillarmont 600, B-4032 Chênée, Belgium
| | - Jean-Pierre Bourguignon
- Developmental Neuroendocrinology Unit, GIGA Neurosciences, University of Liège, Sart-Tilman, B-4000 Liège, Belgium; Department of Pediatrics, CHU de Liège, Rue de Gaillarmont 600, B-4032 Chênée, Belgium.
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14
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Wall EH, Hewitt SC, Case LK, Lin CY, Korach KS, Teuscher C. The role of genetics in estrogen responses: a critical piece of an intricate puzzle. FASEB J 2014; 28:5042-54. [PMID: 25212221 DOI: 10.1096/fj.14-260307] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The estrogens are female sex hormones that are involved in a variety of physiological processes, including reproductive development and function, wound healing, and bone growth. They are mainly known for their roles in reproductive tissues--specifically, 17β-estradiol (E2), the primary estrogen, which is secreted by the ovaries and induces cellular proliferation and growth of the uterus and mammary glands. In addition to the role of estrogens in promoting tissue growth and development during normal physiological states, they have a well-established role in determining susceptibility to disease, particularly cancer, in reproductive tissues. The responsiveness of various tissues to estrogen is genetically controlled, with marked quantitative variation observed across multiple species, including humans. This variation presents both researchers and clinicians with a veritable physiological puzzle, the pieces of which--many of them unknown--are complex and difficult to fit together. Although genetics is known to play a major role in determining sensitivity to estrogens, there are other factors, including parent of origin and the maternal environment, that are intimately linked to heritable phenotypes but do not represent genotype, per se. The objectives of this review article were to summarize the current knowledge of the role of genotype, and uterine and neonatal environments, in phenotypic variation in the response to estrogens; to discuss recent findings and the potential mechanisms involved; and to highlight exciting research opportunities for the future.
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Affiliation(s)
- Emma H Wall
- Department of Medicine and Pathology, University of Vermont, Burlington Vermont, USA
| | - Sylvia C Hewitt
- Receptor Biology, National Institute of Environmental Health Science, U.S. National Institutes of Health, Research Triangle Park, North Carolina, USA; and
| | - Laure K Case
- Department of Medicine and Pathology, University of Vermont, Burlington Vermont, USA
| | - Chin-Yo Lin
- Center for Nuclear Receptors and Cell Signaling, University of Houston, Houston, Texas, USA
| | - Kenneth S Korach
- Receptor Biology, National Institute of Environmental Health Science, U.S. National Institutes of Health, Research Triangle Park, North Carolina, USA; and
| | - Cory Teuscher
- Department of Medicine and Pathology, University of Vermont, Burlington Vermont, USA;
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15
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Williams C, Bondesson M, Krementsov DN, Teuscher C. Gestational bisphenol A exposure and testis development. ACTA ACUST UNITED AC 2014; 2. [PMID: 26167515 DOI: 10.4161/endo.29088] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Virtually all humans are exposed to bisphenol A (BPA). Since BPA can act as a ligand for estrogen receptors, potential hazardous effects of BPA should be evaluated in the context of endogenous estrogenic hormones. Because estrogen is metabolized in the placenta, developing fetuses are normally exposed to very low endogenous estrogen levels. BPA, on the other hand, passes through the placenta and might have distinct adverse consequences during the sensitive stages of fetal development. Testicular gametogenesis and steroidogenesis begin early during fetal development. These processes are sensitive to estrogens and play a role in determining the number of germ stem cells, sperm count, and male hormone levels in adulthood. Although studies have shown a correlation between BPA exposure and perturbed reproduction, a clear consensus has yet to be established as to whether current human gestational BPA exposure results in direct adverse effects on male genital development and reproduction. However, studies in animals and in vitro have provided direct evidence for the ability of BPA exposure to influence male reproductive development. This review discusses the current knowledge of potential effects of BPA exposure on male reproductive health and whether gestational exposure adversely affects testis development.
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Affiliation(s)
- Cecilia Williams
- Center for Nuclear Receptors and Cell Signaling; Department of Biology and Biochemistry; University of Houston, Houston, TX USA
| | - Maria Bondesson
- Center for Nuclear Receptors and Cell Signaling; Department of Biology and Biochemistry; University of Houston, Houston, TX USA
| | - Dimitry N Krementsov
- Department of Medicine; Immunobiology Program; University of Vermont; Burlington, VT USA
| | - Cory Teuscher
- Department of Medicine; Immunobiology Program; University of Vermont; Burlington, VT USA ; Department of Pathology; University of Vermont; Burlington, VT USA
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16
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Nynca A, Słonina D, Jablońska O, Kamińska B, Ciereszko R. Daidzein affects steroidogenesis and oestrogen receptor expression in medium ovarian follicles of pigs. Acta Vet Hung 2013; 61:85-98. [PMID: 23439294 DOI: 10.1556/avet.2012.060] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Daidzein, a phytoestrogen present in soybean products used in swine feed, has been demonstrated to affect both reproductive and endocrine functions. The aims of this study were to examine the in vitro effects of daidzein on (1) progesterone (P4) and oestradiol (E2) secretion by porcine luteinised granulosa cells harvested from medium follicles, and (2) the mRNA and protein expression of oestrogen receptors α and β (ERα and ERβ) in these cells. The influence of E2 on P4 secretion and ERα and ERβ expression in the granulosa cells of pigs was also investigated. It was found that daidzein inhibited progesterone secretion by luteinised granulosa cells isolated from medium follicles. In contrast, E2 did not affect progesterone production by these cells. Moreover, daidzein did not alter the granulosal secretion of E2. Both daidzein and E2 decreased mRNA expression of ERα in the cells examined. The expression of ERβ mRNA was not affected by daidzein but was inhibited by E2. ERα protein was not detected while ERβ protein was found in the nuclei of the cells. Daidzein and E2 upregulated the expression of ERβ protein in the cells. In summary, the phytoestrogen daidzein directly affected the porcine ovary by inhibiting progesterone production and increasing ERβ protein expression. Daidzein-induced changes in follicular steroidogenesis and granulosal sensitivity to oestrogens may disturb reproductive processes in pigs.
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Affiliation(s)
| | - Dominika Słonina
- 3 Polish Academy of Sciences Department of Cattle Reproduction Endocrinology, Institute of Animal Reproduction and Food Research Olsztyn Poland
| | - Olga Jablońska
- 1 University of Warmia and Mazury Department of Animal Physiology Olsztyn Poland
| | - Barbara Kamińska
- 1 University of Warmia and Mazury Department of Animal Physiology Olsztyn Poland
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Bulzomi P, Bolli A, Galluzzo P, Acconcia F, Ascenzi P, Marino M. The naringenin-induced proapoptotic effect in breast cancer cell lines holds out against a high bisphenol a background. IUBMB Life 2012; 64:690-6. [PMID: 22692793 DOI: 10.1002/iub.1049] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2012] [Accepted: 04/17/2012] [Indexed: 12/19/2022]
Abstract
Fruit and vegetable consumption has generally been associated with the prevention or suppression of cancer. However, food could contain a multitude of chemicals (e.g., bisphenol A; BPA) that could synergize or antagonize the effects of diet-derived compounds. Remarkably, food containers (e.g., water and infant bottles) are the largest source of exposure to BPA for human beings. Here, the effects of the coexposure of naringenin (Nar, 1.0 × 10(-9) M to 1.0 × 10(-4) M) and BPA (1.0 × 10(-5) M) in estrogen-dependent breast cancer cell lines expressing (i.e., MCF-7 and T47D) or not expressing (i.e., MDA-MB-231) estrogen receptor α (ERα) are reported. Although both Nar and BPA bind to ERα, they induce opposite effects on breast cancer cell growth. BPA induces cell proliferation, whereas Nar only decreases the number of ERα-positive cells (i.e., MCF-7 and T47D). Notably, even in the presence of BPA, Nar impairs breast cancer cell proliferation by activating caspase-3. The molecular pathways involved require p38 activation, whereas, the BPA-induced AKT activation is completely prevented by the Nar treatment. As a whole, Nar maintains its proapoptotic effects even in the presence of the food contaminant BPA, thus, enlarging the chemopreventive potential of this flavanone.
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Affiliation(s)
- Pamela Bulzomi
- Department of Biology, University Roma Tre, Viale G. Marconi 446, I-00146 Roma, Italy
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