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Park CG, Adnan KM, Cho H, Ryu CS, Yoon J, Kim YJ. A combined in vitro-in silico method for assessing the androgenic activities of bisphenol A and its analogues. Toxicol In Vitro 2024; 98:105838. [PMID: 38710238 DOI: 10.1016/j.tiv.2024.105838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 04/29/2024] [Accepted: 05/03/2024] [Indexed: 05/08/2024]
Abstract
Interactions between endocrine-disruptor chemicals (EDCs) and androgen receptor (AR) have adverse effects on the endocrine system, leading to human reproductive dysfunction. Bisphenol A (BPA) is an EDC that can damage both the environment and human health. Although numerous BPA analogues have been produced as substitutes for BPA, few studies have evaluated their endocrine-disrupting abilities. We assessed the (anti)-androgenic activities of BPA and its analogues using a yeast-based reporter assay. The BPA analogues tested were bisphenol S (BPS), 4-phenylphenol (4PP), 4,4'-(9-fluorenyliden)-diphenol (BPFL), tetramethyl bisphenol F (TMBPF), and tetramethyl bisphenol A (TMBPA). We also conducted molecular docking and dynamics simulations to assess the interactions of BPA and its analogues with the ligand-binding domain of human AR (AR-LBD). Neither BPA nor its analogues had androgenic activity; however, all except BPFL exerted robust anti-androgenic effects. Consistent with the in vitro results, anti-androgenic analogues of BPA formed hydrogen bonding patterns with key residues that differed from the patterns of endogenous hormones, indicating that the analogues display in inappropriate orientations when interacting with the binding pocket of AR-LBD. Our findings indicate that BPA and its analogues disrupt androgen signaling by interacting with the AR-LBD. Overall, BPA and its analogues display endocrine-disrupting activity, which is mediated by AR.
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Affiliation(s)
- Chang Gyun Park
- Environmental Safety Group, Korea Institute of Science and Technology (KIST) Europe, Saarbrucken 66123, Germany; Division of Experimental Neurosurgery, Department of Neurosurgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Karim Md Adnan
- Environmental Safety Group, Korea Institute of Science and Technology (KIST) Europe, Saarbrucken 66123, Germany; Universität des Saarlandes, 66123 Saarbrücken, Germany
| | - Hyunki Cho
- Environmental Safety Group, Korea Institute of Science and Technology (KIST) Europe, Saarbrucken 66123, Germany; Universität des Saarlandes, 66123 Saarbrücken, Germany
| | - Chang Seon Ryu
- Environmental Safety Group, Korea Institute of Science and Technology (KIST) Europe, Saarbrucken 66123, Germany
| | - Juyong Yoon
- Environmental Safety Group, Korea Institute of Science and Technology (KIST) Europe, Saarbrucken 66123, Germany.
| | - Young Jun Kim
- Environmental Safety Group, Korea Institute of Science and Technology (KIST) Europe, Saarbrucken 66123, Germany.
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2
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Lee J, Zee S, Kim HI, Cho SH, Park CB. Effects of crosstalk between steroid hormones mediated thyroid hormone in zebrafish exposed to 4-tert-octylphenol: Estrogenic and anti-androgenic effects. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 277:116348. [PMID: 38669872 DOI: 10.1016/j.ecoenv.2024.116348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 03/26/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024]
Abstract
Alkylphenols, such as nonylphenol and 4-tert-octylphenol (OP), are byproducts of the biodegradation of alkylphenol ethoxylates and present substantial ecological and health risks in aquatic environments and higher life forms. In this context, our study aimed to explore the effect of OP on reproductive endocrine function in both female and male zebrafish. Over a period of 21 days, the zebrafish were subjected to varying concentrations of OP (0, 0.02, 0.1, and 0.5 μg/L), based on the lowest effective concentration (EC10 = 0.48 μg/L) identified for zebrafish embryos. OP exposure led to a pronounced increase in hepatic vitellogenin (vtg) mRNA expression and 17β-estradiol biosynthesis in both sexes. Conversely, OP exhibits anti-androgenic properties, significantly diminishes gonadal androgen receptor (ar) mRNA expression, and reduces endogenous androgen (testosterone and 11-ketotestosterone) levels in male zebrafish. Notably, cortisol and thyroid hormone (TH) levels demonstrated concentration-dependent elevations in zebrafish, influencing the regulation of gonadal steroid hormones (GSHs). These findings suggest that prolonged OP exposure may result in sustained reproductive dysfunction in adult zebrafish, which is largely attributable to the intricate reciprocal relationship between hormone levels and the associated gene expression. Our comprehensive biological response analysis of adult zebrafish offers vital insights into the reproductive toxicological effects of OP, thereby enriching future ecological studies on aquatic systems.
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Affiliation(s)
- Jangjae Lee
- Chemical Analysis Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea; Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Seonggeun Zee
- Environmental Exposure & Toxicology Research Center, Korea Institute of Toxicology (KIT), Jinju 52834, Republic of Korea; Food Safety Risk Assessment Division, National Institute of Food and Drug Safety Evaluation, Cheongju 28159, Republic of Korea
| | - Hugh I Kim
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Sung-Hee Cho
- Chemical Analysis Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea.
| | - Chang-Beom Park
- Environmental Exposure & Toxicology Research Center, Korea Institute of Toxicology (KIT), Jinju 52834, Republic of Korea.
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Shaw R, Prakash P, Althagafi I, Giri NG, Pratap R. 1,3-Dianionic annulation of ketones with ketene dithioacetal: a modified route to 3-aryl/cyclopropyl-5-thiomethyl-phenols and 1-(methylthio)-9,10-dihydrophenanthren-3-ols. RSC Adv 2023; 13:34299-34307. [PMID: 38020023 PMCID: PMC10664189 DOI: 10.1039/d3ra05421g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 10/18/2023] [Indexed: 12/01/2023] Open
Abstract
A simple and efficient base-mediated [3 + 3] cyclization of 1,3-dianionic ketones with 3,3-bis(methylthio)-1-arylprop-2-en-1-ones was developed to afford 3-hydroxy-biaryls, hydroxy-xylenes, and hydroxy-teraryls. Various tri- and tetra-substituted phenols were prepared from different symmetric and asymmetric ketones. The reaction of 2-(bis(methylthio)methylene)-3,4-dihydronaphthalen-1(2H)-ones with different ketones provided 1-(methylthio)-9,10-dihydrophenanthren-3-ols in very good yield. The scope of the reaction was further extended by the synthesis of cyclopropyl-functionalized phenols. One of the compounds was crystallized, and its structure was confirmed using the single-crystal X-ray approach.
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Affiliation(s)
- Ranjay Shaw
- Department of Chemistry, GLA University Mathura UP 281406 India
| | - Prasoon Prakash
- Department of Kinesiology and Educational Psychology, Washington State University Pullman WA 99164 USA
| | - Ismail Althagafi
- Department of Chemistry, Faculty of Science, Umm Al-Qura University Makkah 21955 Saudi Arabia
| | - Nand Gopal Giri
- Department of Chemistry, Shivaji College, University of Delhi Raja Garden New Delhi 110027 India
| | - Ramendra Pratap
- Department of Chemistry, University of Delhi Delhi 110007 India
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4
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Panwar V, Lzaod S, Dutta T. Thermostable Bacterial Laccase: Catalytic Properties and Its Application in Biotransformation of Emerging Pollutants. ACS OMEGA 2023; 8:34710-34719. [PMID: 37779991 PMCID: PMC10536042 DOI: 10.1021/acsomega.3c03627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 09/04/2023] [Indexed: 10/03/2023]
Abstract
Laccases have been predominantly reported in fungi, and primarily, fungal laccases are currently exploited in industrial applications. However, extremophilic bacterial laccases possess immense potential, as they can withstand extreme temperatures, pH, and salt concentrations. In addition, unlike fungal laccases, the production of bacterial laccases is cost-effective. Therefore, bacterial laccases are gaining significant attention for their large-scale applications. Previously, we reported a novel thermostable laccase (LacT) from Brevibacillus agri. Herein, we have confirmed that LacT shares a high sequence similarity with CotA laccase from Bacillus amyloliquefaciens. Peptide mass fingerprinting of LacT was conducted via matrix-assisted laser desorption ionization-time-of-flight mass spectrometry (MALDI-TOF/MS-MS). Inductively coupled plasma-optical emission spectroscopic (ICP-OES) analysis revealed the presence of ∼3.95 copper ions per protein molecule. Moreover, the secondary and tertiary structure of LacT was studied using circular dichroism (CD) and fluorescence spectroscopy. The absence of notable shifts in CD and fluorescence spectra with an increase in temperature established that LacT remains intact even at elevated temperatures. Analysis of the thermal denaturation profile of LacT by thermogravimetric analysis (TGA) also confirmed its temperature stability. Thereafter, we exploited LacT in its application for the bioremediation of phenolic endocrine disruptors, namely, triclosan, 4,4'-dihydroxybiphenyl, and dienestrol. LacT oxidizes 4,4'-dihydroxybiphenyl and triclosan but no LacT activity was detected with dienestrol. The rate of biotransformation of 4,4'-dihydroxybiphenyl and triclosan increased in the presence of CuSO4 and a redox mediator, ABTS. Transformation of dienestrol was observed only with LacT in the presence of ABTS. This study establishes the application of LacT for the bioremediation of phenolic compounds.
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Affiliation(s)
- Varsha Panwar
- Enzyme
Technology Laboratory, Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Stanzin Lzaod
- Enzyme
Technology Laboratory, Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Tanmay Dutta
- Enzyme
Technology Laboratory, Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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5
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Yadav SK, Bijalwan V, Yadav S, Sarkar K, Das S, Singh DP. Susceptibility of male reproductive system to bisphenol A, an endocrine disruptor: Updates from epidemiological and experimental evidence. J Biochem Mol Toxicol 2022; 37:e23292. [PMID: 36527247 DOI: 10.1002/jbt.23292] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 12/08/2022] [Indexed: 12/23/2022]
Abstract
Bisphenol A (BPA) is an omnipresent environmental pollutant. Despite being restrictions in-force for its utilization, it is widely being used in the production of polycarbonate plastics and epoxy resins. Direct, low-dose, and long-term exposure to BPA is expected when they are used in the packaging of food products and are used as containers for food consumption. Occupationally, workers are typically exposed to BPA at higher levels and for longer periods during the manufacturing process. BPA is a known endocrine disruptor chemical (EDC), that causes male infertility, which has a negative impact on human life from emotional, physical, and societal standpoints. To minimize the use of BPA in numerous consumer products, efforts and regulations are being made. Despite legislative limits in numerous nations, BPA is still found in consumer products. This paper examines BPA's overall male reproductive toxicity, including its impact on the hypothalamic-pituitary-testicular (HPT) axis, hormonal homeostasis, testicular steroidogenesis, sperm parameters, reproductive organs, and antioxidant defense system. Furthermore, this paper highlighted the role of non-monotonic dose-response (NMDR) in BPA exposure, which will help to improve the overall understanding of the harmful effects of BPA on the male reproductive system.
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Affiliation(s)
- Shiv K. Yadav
- ICMR‐National Institute of Occupational Health (NIOH) Ahmedabad Gujarat India
| | - Vandana Bijalwan
- ICMR‐National Institute of Occupational Health (NIOH) Ahmedabad Gujarat India
| | - Suresh Yadav
- ICMR‐National Institute for Implementation Research on Non‐Communicable Disease (NIIRNCD) Jodhpur Rajasthan India
| | - Kamalesh Sarkar
- ICMR‐National Institute of Occupational Health (NIOH) Ahmedabad Gujarat India
- ICMR‐National Institute of Cholera & Enteric Diseases (NICED) Kolkata West Bengal India
| | - Santasabuj Das
- ICMR‐National Institute of Occupational Health (NIOH) Ahmedabad Gujarat India
- ICMR‐National Institute of Cholera & Enteric Diseases (NICED) Kolkata West Bengal India
| | - Dhirendra P. Singh
- ICMR‐National Institute of Occupational Health (NIOH) Ahmedabad Gujarat India
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Rahman MS, Pang WK, Amjad S, Ryu DY, Adegoke EO, Park YJ, Pang MG. Hepatic consequences of a mixture of endocrine-disrupting chemicals in male mice. JOURNAL OF HAZARDOUS MATERIALS 2022; 436:129236. [PMID: 35739755 DOI: 10.1016/j.jhazmat.2022.129236] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 05/22/2022] [Accepted: 05/23/2022] [Indexed: 06/15/2023]
Abstract
The global epidemic of metabolic syndrome has been partially linked to ubiquitous exposure to endocrine-disrupting chemicals (EDCs). Although the impacts of exposure to single EDCs have been thoroughly studied, the consequences of simultaneous uncontrolled exposure to multiple EDCs require further investigations. Therefore, in this study, we evaluated how exposure to mixtures containing bisphenol A and seven phthalates impacts liver functions and metabolic homeostasis. Male mice were gavaged with either EDCs at four different dose combinations or corn oil (control) for six weeks. The results showed that exposure to EDCs at the human daily exposure limit had a negligible impact on liver function. However, EDC at ≥ 25 orders of magnitude of human-relevant doses had detrimental impacts on overall liver function, leading to metabolic abnormalities, steatohepatitis, and hepatic fibrosis via the activation of both genomic and non-genomic pathways. The metabolic phenotype was linked to alterations in key genes involved in hepatic lipid and glucose metabolism. In contrast, alterations in cytokine expression, oxidative stress, and apoptosis impacted steatohepatitis and fibrosis. Because EDC exposure does not occur independently, the findings of the combined effects of exposure to multiple EDCs have significant relevance for public health.
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Affiliation(s)
- Md Saidur Rahman
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong, Gyeonggi-do 17546, Republic of Korea
| | - Won-Ki Pang
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong, Gyeonggi-do 17546, Republic of Korea
| | - Shehreen Amjad
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong, Gyeonggi-do 17546, Republic of Korea
| | - Do-Yeal Ryu
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong, Gyeonggi-do 17546, Republic of Korea
| | - Elikanah Olusayo Adegoke
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong, Gyeonggi-do 17546, Republic of Korea
| | - Yoo-Jin Park
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong, Gyeonggi-do 17546, Republic of Korea
| | - Myung-Geol Pang
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong, Gyeonggi-do 17546, Republic of Korea.
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7
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Are BPA Substitutes as Obesogenic as BPA? Int J Mol Sci 2022; 23:ijms23084238. [PMID: 35457054 PMCID: PMC9031831 DOI: 10.3390/ijms23084238] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 03/31/2022] [Accepted: 04/05/2022] [Indexed: 02/04/2023] Open
Abstract
Metabolic diseases, such as obesity, Type II diabetes and hepatic steatosis, are a significant public health concern affecting more than half a billion people worldwide. The prevalence of these diseases is constantly increasing in developed countries, affecting all age groups. The pathogenesis of metabolic diseases is complex and multifactorial. Inducer factors can either be genetic or linked to a sedentary lifestyle and/or consumption of high-fat and sugar diets. In 2002, a new concept of “environmental obesogens” emerged, suggesting that environmental chemicals could play an active role in the etiology of obesity. Bisphenol A (BPA), a xenoestrogen widely used in the plastic food packaging industry has been shown to affect many physiological functions and has been linked to reproductive, endocrine and metabolic disorders and cancer. Therefore, the widespread use of BPA during the last 30 years could have contributed to the increased incidence of metabolic diseases. BPA was banned in baby bottles in Canada in 2008 and in all food-oriented packaging in France from 1 January 2015. Since the BPA ban, substitutes with a similar structure and properties have been used by industrials even though their toxic potential is unknown. Bisphenol S has mainly replaced BPA in consumer products as reflected by the almost ubiquitous human exposure to this contaminant. This review focuses on the metabolic effects and targets of BPA and recent data, which suggest comparable effects of the structural analogs used as substitutes.
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8
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Ecotoxicological Estimation of 4-Cumylphenol, 4- t-Octylphenol, Nonylphenol, and Volatile Leachate Phenol Degradation by the Microscopic Fungus Umbelopsis isabellina Using a Battery of Biotests. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19074093. [PMID: 35409777 PMCID: PMC8998573 DOI: 10.3390/ijerph19074093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/22/2022] [Accepted: 03/28/2022] [Indexed: 02/04/2023]
Abstract
The phenolic xenobiotics nonylphenol (NP), 4-tert-octylphenol (4-t-OP), and 4-cumylphenol (4-CP) have the potential to seriously disrupt the endocrine system. Volatile phenols (VPs), especially those present in landfill leachate, also adversely affect the health of numerous organisms. Microbial degradation of xenobiotics can result in the formation of intermediates with higher toxicity than the precursor substrates. Therefore, the main aim of this study was to assess the changes in environmental ecotoxicity during the biotransformation of nonylphenol, 4-tert-octylphenol, 4-cumylphenol and volatile phenols by Umbelopsis isabellina using a battery of biotests. The application of bioindicators belonging to different taxonomic groups and diverse trophic levels (producers, consumers, and reducers) indicated a significant reduction in toxicity during the cultivation of fungus cultures both for nonylphenol, 4-tert-octylphenol, 4-cumylphenol and volatile phenols. The rate of toxicity decline was correlated with the degree of xenobiotic biotransformation. Removal of 4-cumylphenol and 4-tert-octylphenol also led to a decrease in the anti-androgenic potential. Moreover, this is the first report demonstrating the anti-androgenic properties of 4-cumylphenol. The results showed that U. isabellina is an attractive tool for the bioremediation and detoxification of contaminated environments.
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Tosirisuk N, Sakorn N, Jantarat C, Nosoongnoen W, Aroonpakmongkol S, Supornsilchai V. Increased bisphenol A levels in Thai children and adolescents with type 1 diabetes mellitus. Pediatr Int 2022; 64:e14944. [PMID: 34342913 DOI: 10.1111/ped.14944] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 06/08/2021] [Accepted: 06/16/2021] [Indexed: 01/06/2023]
Abstract
BACKGROUND The incidence of type 1 diabetes mellitus (T1DM) in children and adolescents continues to increase worldwide. The reason for this is unclear. In addition to the role of genetics, bisphenol A (BPA) has been investigated as a possible causal factor for T1DM. This study aimed to determine the correlation between urinary BPA levels and T1DM in Thai children and adolescents. METHODS A cross-sectional study was conducted in T1DM patients who were followed at the endocrinology clinic at King Chulalongkorn Memorial Hospital from December 2018 to December 2019 and age-matched healthy controls. Urinary BPA levels were analyzed by high-performance liquid chromatography and adjusted by urine creatinine. Anthropometric data were measured in all participants and clinical data were collected for the T1DM patients. All participants completed a questionnaire regarding possible BPA exposures. Multivariate logistic regression analysis was used to estimate the adjusted odds ratio for T1DM. RESULTS Seventy-five T1DM patients and 113 age-matched controls were included in the study. The mean age for T1DM and control groups were 14.8 ± 5.7 and 14.4 ± 6.2 years, respectively. The T1DM group had a significantly higher median (interquartile range) level of adjusted urinary BPA compared to the control (31.50 [7.87, 69.45] vs 10.1 [0, 54.01] μg/g creatinine, P = 0.02). Urinary BPA of 17 μg/g creatinine or more was significantly associated with TIDM, with adjusted odds ratio (95% Confident interval, CI) of 2.38 (1.27, 4.44), P = 0.006. CONCLUSIONS Higher urinary BPA level is one of the possible risk factors for T1DM.
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Affiliation(s)
- Naruporn Tosirisuk
- Division of Endocrinology, Department of Pediatrics, Faculty of Medicine, King Chulalongkorn Memorial Hospital, Bangkok, Thailand
| | - Natee Sakorn
- School of Pharmacy, Walailak University, Nakhon Si Thammarat, Thailand
| | - Chutima Jantarat
- School of Pharmacy, Walailak University, Nakhon Si Thammarat, Thailand
| | - Wichit Nosoongnoen
- Department of Pharmacy, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
| | - Suphab Aroonpakmongkol
- Division of Endocrinology, Department of Pediatrics, Faculty of Medicine, King Chulalongkorn Memorial Hospital, Bangkok, Thailand
| | - Vichit Supornsilchai
- Division of Endocrinology, Department of Pediatrics, Faculty of Medicine, King Chulalongkorn Memorial Hospital, Bangkok, Thailand
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10
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Gaspari L, Tessier B, Paris F, Bergougnoux A, Hamamah S, Sultan C, Kalfa N. Endocrine-Disrupting Chemicals and Disorders of Penile Development in Humans. Sex Dev 2021; 15:213-228. [PMID: 34438394 DOI: 10.1159/000517157] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 05/10/2021] [Indexed: 01/09/2023] Open
Abstract
This paper reviews the current knowledge on the environmental effects on penile development in humans. The specific focus is on endocrine-disrupting chemicals (EDCs), a heterogeneous group of natural or manmade substances that interfere with endocrine function, and whether they can induce hypospadias and micropenis in male neonates. Epidemiological data and animal observations first raised suspicions about environmental effects, leading to the testis dysgenesis syndrome (TDS) hypothesis. More recent research has provided stronger indications that TDS may indeed be the result of the direct or indirect effects of EDCs. Drawing on epidemiological and toxicological studies, we also report on the effects of maternal diet and substances like pesticides, phthalates, bisphenol A, and polychlorinated biphenyls. Proximity to contamination hazards and occupational exposure are also suspected to contribute to the occurrence of hypospadias and micropenis. Lastly, the cumulative effects of EDCs and the possibility of transgenerational effects, with the penile development of subsequent generations being affected, raise concerns for long-term public health.
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Affiliation(s)
- Laura Gaspari
- Centre de Référence Maladies Rares du Développement Génital DEVGEN, Constitutif Sud, Hôpital Lapeyronie, CHU Montpellier, Université Montpellier, Montpellier, France.,Unité d'Endocrinologie-Gynécologie Pédiatrique, Service de Pédiatrie, Hôpital Arnaud-de-Villeneuve, CHU Montpellier, Université Montpellier, Montpellier, France.,Développement Embryonnaire Fertilité Environnement, INSERM 1203, Université Montpellier, Montpellier, France
| | - Benoit Tessier
- Département de Chirurgie Viscérale et Urologique Pédiatrique, Hôpital Lapeyronie, CHU Montpellier, Université Montpellier, Montpellier, France.,Institut Debrest de Santé Publique IDESP, UMR INSERM, Université Montpellier, Montpellier, France
| | - Françoise Paris
- Centre de Référence Maladies Rares du Développement Génital DEVGEN, Constitutif Sud, Hôpital Lapeyronie, CHU Montpellier, Université Montpellier, Montpellier, France.,Unité d'Endocrinologie-Gynécologie Pédiatrique, Service de Pédiatrie, Hôpital Arnaud-de-Villeneuve, CHU Montpellier, Université Montpellier, Montpellier, France.,Développement Embryonnaire Fertilité Environnement, INSERM 1203, Université Montpellier, Montpellier, France
| | - Anne Bergougnoux
- Centre de Référence Maladies Rares du Développement Génital DEVGEN, Constitutif Sud, Hôpital Lapeyronie, CHU Montpellier, Université Montpellier, Montpellier, France.,Laboratoire de Génétique Moléculaire, PhyMedExp, INSERM, CNRS UMR, CHU Montpellier, Université Montpellier, Montpellier, France
| | - Samir Hamamah
- Développement Embryonnaire Fertilité Environnement, INSERM 1203, Université Montpellier, Montpellier, France.,Département de Biologie de la Reproduction, Biologie de la Reproduction/DPI et CECOS, CHU Montpellier, Université Montpellier, Montpellier, France
| | - Charles Sultan
- Centre de Référence Maladies Rares du Développement Génital DEVGEN, Constitutif Sud, Hôpital Lapeyronie, CHU Montpellier, Université Montpellier, Montpellier, France
| | - Nicolas Kalfa
- Centre de Référence Maladies Rares du Développement Génital DEVGEN, Constitutif Sud, Hôpital Lapeyronie, CHU Montpellier, Université Montpellier, Montpellier, France.,Département de Chirurgie Viscérale et Urologique Pédiatrique, Hôpital Lapeyronie, CHU Montpellier, Université Montpellier, Montpellier, France.,Institut Debrest de Santé Publique IDESP, UMR INSERM, Université Montpellier, Montpellier, France
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11
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Peillex C, Kerever A, Lachhab A, Pelletier M. Bisphenol A, bisphenol S and their glucuronidated metabolites modulate glycolysis and functional responses of human neutrophils. ENVIRONMENTAL RESEARCH 2021; 196:110336. [PMID: 33091430 DOI: 10.1016/j.envres.2020.110336] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 10/07/2020] [Accepted: 10/08/2020] [Indexed: 05/26/2023]
Abstract
Bisphenol A (BPA) and its main substitute, bisphenol S (BPS), are synthetic organic compounds found in various consumer products, in particular food and beverage containers. Numerous reports have shown a link between bisphenol exposure, human contamination and increased health problems. BPA, BPS and their metabolites are detectable in bodily fluids (blood, urine) and were reported to affect immune cells and their responses. Though, the impact of those chemicals on neutrophils, the most abundant leukocytes in the circulation, remains poorly described. Therefore, we examined the effects of BPA, BPS and their monoglucuronide conjugates on neutrophil energy metabolism and anti-microbial functions, mainly phagocytosis, superoxide anion generation and CXCL8/IL-8 chemokine production. We observed that short and prolonged exposures of neutrophils to these chemicals modulate the basal and the bacterium-derived peptide N-formyl-methionyl-leucyl-phenylalanine-induced glycolysis, with BPS causing the most alterations. The variation in energy metabolism was not associated with dysfunctions in cell cytotoxicity, phagocytosis, nor superoxide anion production upon exposure to bisphenols. In contrast, bisphenols significantly reduced the production of CXCL8/IL-8 by neutrophils, an effect found to be greater with the glucuronidated metabolites. Our study highlights that BPA, BPS and their glucuronidated metabolites alter the energy metabolism and certain anti-microbial responses of neutrophils, with possible health implications. Importantly, we found that BPS and the glucuronidated metabolites of BPA and BPS showed higher endocrine-disrupting potential than BPA. More studies on bisphenols, especially the less-documented BPS and bisphenol metabolites, are needed to fully determine their risks, allow better regulation of these compounds, and restrict their extensive usage.
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Affiliation(s)
- Cindy Peillex
- Infectious and Immune Disease Axis, CHU de Québec-Université Laval Research Center, Québec, Canada; Master de Biologie, École Normale Supérieure de Lyon, Université Claude Bernard Lyon I, Université de Lyon, Lyon, France; ARThrite Research Center, Laval University, Québec, Canada
| | - Anthony Kerever
- Infectious and Immune Disease Axis, CHU de Québec-Université Laval Research Center, Québec, Canada
| | - Asmaa Lachhab
- Infectious and Immune Disease Axis, CHU de Québec-Université Laval Research Center, Québec, Canada; ARThrite Research Center, Laval University, Québec, Canada
| | - Martin Pelletier
- Infectious and Immune Disease Axis, CHU de Québec-Université Laval Research Center, Québec, Canada; ARThrite Research Center, Laval University, Québec, Canada; Department of Microbiology-Infectious Diseases and Immunology, Faculty of Medicine, Laval University, Québec, Canada.
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12
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Khan NG, Correia J, Adiga D, Rai PS, Dsouza HS, Chakrabarty S, Kabekkodu SP. A comprehensive review on the carcinogenic potential of bisphenol A: clues and evidence. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:19643-19663. [PMID: 33666848 PMCID: PMC8099816 DOI: 10.1007/s11356-021-13071-w] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 02/17/2021] [Indexed: 04/12/2023]
Abstract
Bisphenol A [BPA; (CH3)2C(C6H4OH)2] is a synthetic chemical used as a precursor material for the manufacturing of plastics and resins. It gained attention due to its high chances of human exposure and predisposing individuals at extremely low doses to diseases, including cancer. It enters the human body via oral, inhaled, and dermal routes as leach-out products. BPA may be anticipated as a probable human carcinogen. Studies using in vitro cell lines, rodent models, and epidemiological analysis have convincingly shown the increasing susceptibility to cancer at doses below the oral reference dose set by the Environmental Protection Agency for BPA. Furthermore, BPA exerts its toxicological effects at the genetic and epigenetic levels, influencing various cell signaling pathways. The present review summarizes the available data on BPA and its potential impact on cancer and its clinical outcome.
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Affiliation(s)
- Nadeem Ghani Khan
- Department of Cell and Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Jacinta Correia
- Department of Cell and Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Divya Adiga
- Department of Cell and Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Padmalatha Satwadi Rai
- Department of Biotechnology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Herman Sunil Dsouza
- Department of Radiation Biology and Toxicology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Sanjiban Chakrabarty
- Department of Cell and Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
- Center for DNA repair and Genome Stability (CDRGS), Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Shama Prasada Kabekkodu
- Department of Cell and Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India.
- Center for DNA repair and Genome Stability (CDRGS), Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India.
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13
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Santhi VM, Ramalingam A, Parthasarathy DL, Seshasayee P, Narasimhan SL. Deep eutectic solvents on extraction of bisphenol A from water matrices: COnductor like Screening MOdel for Real Solvents prediction and experimental validation. ASIA-PAC J CHEM ENG 2021. [DOI: 10.1002/apj.2627] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Vivek Mariappan Santhi
- Department of Chemical Engineering Sri Sivasubramaniya Nadar College of Engineering Chennai` India
| | - Anantharaj Ramalingam
- Department of Chemical Engineering Sri Sivasubramaniya Nadar College of Engineering Chennai` India
| | | | - Priyadarshini Seshasayee
- Department of Chemical Engineering Sri Sivasubramaniya Nadar College of Engineering Chennai` India
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14
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Low-dose Bisphenol-A Promotes Epigenetic Changes at Pparγ Promoter in Adipose Precursor Cells. Nutrients 2020; 12:nu12113498. [PMID: 33203037 PMCID: PMC7696502 DOI: 10.3390/nu12113498] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 11/02/2020] [Accepted: 11/11/2020] [Indexed: 12/14/2022] Open
Abstract
Exposure to endocrine-disrupting chemicals such as Bisphenol-A (BPA) is associated with an increase in obesity prevalence. Diet is the primary cause of human exposure to this contaminant. BPA promotes obesity by inducing adipocyte dysfunction and altering adipogenesis. Contradictory evidence and unanswered questions are reported in the literature concerning the BPA effects on adipogenesis. To clarify this issue, we tested the effects of prolonged low-dose BPA exposure on different phases of adipogenesis in committed 3T3L1 and uncommitted NIH3T3 preadipocytes. Our findings show that BPA effects on the adipogenesis are mediated by epigenetic mechanisms by reducing peroxisome proliferator-activated receptor gamma (Pparγ) promoter methylation in preadipocytes. Nevertheless, in BPA-exposed 3T3L1, Pparγ expression only transiently increases as lipid accumulation at day 4 of differentiation, without altering the adipogenic potential of the precursor cells. In the absence of differentiation mix, BPA does not make the 3T3L1 an in vitro model of spontaneous adipogenesis and the effects on the Pparγ expression are still limited at day 4 of differentiation. Furthermore, BPA exposure does not commit the NIH3T3 to the adipocyte lineage, although Pparγ overexpression is more evident both in preadipocytes and during the adipocyte differentiation. Interestingly, termination of the BPA exposure restores the Pparγ promoter methylation and inflammatory profile of the 3T3L1 cells. This study shows that BPA induces epigenetic changes in a key adipogenic gene. These modifications are reversible and do not affect preadipocyte commitment and/or differentiation. We identify an alternative transcriptional mechanism by which BPA affects gene expression and demonstrate how the challenge of preventing exposure is fundamental for human health.
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15
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Olaniyan LWB, Okoh AI. Determination and ecological risk assessment of two endocrine disruptors from River Buffalo, South Africa. ENVIRONMENTAL MONITORING AND ASSESSMENT 2020; 192:750. [PMID: 33155083 PMCID: PMC7644535 DOI: 10.1007/s10661-020-08717-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 10/27/2020] [Indexed: 06/11/2023]
Abstract
4-tert-Octylphenol (4-tOP) and triclosan (TCS) are endocrine disruptors which have been detected in environmental matrices such as air, soil and water at ultra-low levels. Exposure to endocrine disruptors may account at least in part, for the global increase in the incidence of non-communicable diseases like cancers and diabetes and may also lead to an imbalance in the aquatic ecosystem. River Buffalo is an important natural resource in the Eastern Cape of South Africa serving more than half a million people. The presence of the two compounds in the river water hitherto unknown was investigated during winter seasons using solid-phase extraction and gas chromatography-mass spectrometric techniques. The sampling points differed by some physicochemical parameters. The concentration of 4-tOP ranged 0-755 ng/L, median value 88.1 ng/L while that of TCS ranged 0-1264.2 ng/L and the median value was 82.1 ng/L. Hazard quotient as an index of exposure risk varied according to daphnids ˃ fish ˃ algae for 4-tOP exposure while HQ for TCS exposure was algae > daphnids = fish showing that both compounds were capable of causing imbalance in the aquatic ecosystem. Graphical abstract.
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Affiliation(s)
- Lamidi W B Olaniyan
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice, 5700, South Africa.
- Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Alice, 5700, South Africa.
- Biochemistry Department, Faculty of Basic Medical Sciences, Ladoke Akintola University of Technology Ogbomoso, Ogbomoso, Nigeria.
| | - Anthony I Okoh
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice, 5700, South Africa
- Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Alice, 5700, South Africa
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16
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Dellal H, Boulahtouf A, Alaterre E, Cuenant A, Grimaldi M, Bourguet W, Gongora C, Balaguer P, Pourquier P. High Content Screening Using New U2OS Reporter Cell Models Identifies Harmol Hydrochloride as a Selective and Competitive Antagonist of the Androgen Receptor. Cells 2020; 9:cells9061469. [PMID: 32560058 PMCID: PMC7349874 DOI: 10.3390/cells9061469] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/08/2020] [Accepted: 06/11/2020] [Indexed: 12/17/2022] Open
Abstract
Prostate cancer is the most commonly diagnosed malignancy in men. Its growth mainly relies on the activity of the androgen receptor (AR), justifying the use of androgen deprivation therapy as a gold standard treatment for the metastatic disease. Inhibition of the androgen axis using second generation antagonists has improved patients’ survival, but is systematically confronted to resistance mechanisms, leading to a median survival that does not exceed 5 years. Counteracting this resistance has been the object of a large number of investigations, with a particular emphasis towards the identification of new AR inhibitors, whether they antagonize the receptor by a competitive or a non-competitive binding. To this end, many high content screens have been performed, to identify new non-steroidal AR antagonists, using a variety of approaches, but reported somewhat controversial results, depending on the approach and on the cell model that was used for screening. In our study, we used the U2OS osteosarcoma cells stably transfected with AR or ARv7 and a luciferase reporter as a previously validated model to screen the Prestwick Phytochemical library. The results of our screen identified ellipticine, harmol, and harmine hydrochloride as confirmed hits. Surprisingly, we could demonstrate that harmol hydrochloride, previously identified as a non-competitive inhibitor of AR or a weak inhibitor of androgen signaling, was actually a competitive antagonist of AR, which inhibits the growth of VCaP prostate cancer line, at concentrations for which it did not affect the growth of the AR negative DU145 and PC3 cells. Interestingly, we also report for the first time that harmol hydrochloride was selective for AR, as it could not alter the activity of other nuclear receptors, such as the glucocorticoid receptor (GR), the progesterone receptor (PR), or the mineralocorticoid receptor (MR). Additionally, we demonstrate that, conversely to enzalutamide, harmol hydrochloride did not show any agonistic activity towards the pregnane X receptor (PXR), a master regulator of drug metabolism. Together, our results shed light on the importance of the cellular context for the screening of new AR antagonists. They further indicate that some of the potential hits that were previously identified may have been overlooked.
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Affiliation(s)
- Hadjer Dellal
- IRCM, Institut de Recherche en Cancérologie de Montpellier, INSERM U1194, F-34298 Montpellier, France; (H.D.); (A.B.); (E.A.); (A.C.); (M.G.); (C.G.)
- Université de Montpellier, F-34298 Montpellier, France;
| | - Abdelhay Boulahtouf
- IRCM, Institut de Recherche en Cancérologie de Montpellier, INSERM U1194, F-34298 Montpellier, France; (H.D.); (A.B.); (E.A.); (A.C.); (M.G.); (C.G.)
- Université de Montpellier, F-34298 Montpellier, France;
- Institut régional du Cancer de Montpellier, F-34298 Montpellier, France
| | - Elina Alaterre
- IRCM, Institut de Recherche en Cancérologie de Montpellier, INSERM U1194, F-34298 Montpellier, France; (H.D.); (A.B.); (E.A.); (A.C.); (M.G.); (C.G.)
- Université de Montpellier, F-34298 Montpellier, France;
| | - Alice Cuenant
- IRCM, Institut de Recherche en Cancérologie de Montpellier, INSERM U1194, F-34298 Montpellier, France; (H.D.); (A.B.); (E.A.); (A.C.); (M.G.); (C.G.)
- Université de Montpellier, F-34298 Montpellier, France;
| | - Marina Grimaldi
- IRCM, Institut de Recherche en Cancérologie de Montpellier, INSERM U1194, F-34298 Montpellier, France; (H.D.); (A.B.); (E.A.); (A.C.); (M.G.); (C.G.)
- Université de Montpellier, F-34298 Montpellier, France;
| | - William Bourguet
- Université de Montpellier, F-34298 Montpellier, France;
- Centre de Biochimie Structurale, CNRS, INSERM, Université de Montpellier, F-34298 Montpellier, France
| | - Céline Gongora
- IRCM, Institut de Recherche en Cancérologie de Montpellier, INSERM U1194, F-34298 Montpellier, France; (H.D.); (A.B.); (E.A.); (A.C.); (M.G.); (C.G.)
- Université de Montpellier, F-34298 Montpellier, France;
| | - Patrick Balaguer
- IRCM, Institut de Recherche en Cancérologie de Montpellier, INSERM U1194, F-34298 Montpellier, France; (H.D.); (A.B.); (E.A.); (A.C.); (M.G.); (C.G.)
- Université de Montpellier, F-34298 Montpellier, France;
- Correspondence: (P.B.); (P.P.); Tel.: +33-4-67-61-24-09 (P.B.); +33-4-66-68-32-31 (P.P.); Fax: +33-4-67-61-23-37 (P.B.); +33-4-66-68-37-02 (P.P.)
| | - Philippe Pourquier
- IRCM, Institut de Recherche en Cancérologie de Montpellier, INSERM U1194, F-34298 Montpellier, France; (H.D.); (A.B.); (E.A.); (A.C.); (M.G.); (C.G.)
- Université de Montpellier, F-34298 Montpellier, France;
- Correspondence: (P.B.); (P.P.); Tel.: +33-4-67-61-24-09 (P.B.); +33-4-66-68-32-31 (P.P.); Fax: +33-4-67-61-23-37 (P.B.); +33-4-66-68-37-02 (P.P.)
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17
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Keminer O, Teigeler M, Kohler M, Wenzel A, Arning J, Kaßner F, Windshügel B, Eilebrecht E. A tiered high-throughput screening approach for evaluation of estrogen and androgen receptor modulation by environmentally relevant bisphenol A substitutes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 717:134743. [PMID: 31836225 DOI: 10.1016/j.scitotenv.2019.134743] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 09/27/2019] [Accepted: 09/29/2019] [Indexed: 06/10/2023]
Abstract
Bisphenol A (BPA) is a high production volume chemical with a broad application spectrum. As an endocrine disrupting chemical, mainly by modulation of nuclear receptors (NRs), BPA has an adverse impact on organisms and is identified as a substance of very high concern under the European REACH regulation. Various BPA substitution candidates have been developed in recent years, however, information concerning the endocrine disrupting potential of these substances is still incomplete or missing. In this study, we intended to investigate the endocrine potential of BPA substitution candidates used in environmentally relevant applications such as thermal paper or epoxy resins. Based on an extensive literature and patent search, 33 environmentally relevant BPA substitution candidates were identified. In order to evaluate the endocrine potential of the BPA replacements, a screening cascade consisting of biochemical and cell-based assays was employed to investigate substance binding to the NRs estrogen receptor α and β, as well as androgen receptor, co-activator recruitment and NR-mediated reporter gene activation. In addition, a computational docking approach for retrospective prediction of receptor binding was carried out. Our results show that some BPA substitution candidates, for which so far no or only very few data were available, possess a substantial endocrine disrupting potential (TDP, BPZ), while several substances (BPS, D-8, DD70, DMP-OH, TBSA, D4, CBDO, ISO, VITC, DPA, and DOPO) did not reveal any NR binding.
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Affiliation(s)
- Oliver Keminer
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, ScreeningPort, Hamburg, Germany
| | - Matthias Teigeler
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Department of Ecotoxicology, Schmallenberg, Germany
| | - Manfred Kohler
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, ScreeningPort, Hamburg, Germany
| | - Andrea Wenzel
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Department of Ecotoxicology, Schmallenberg, Germany
| | - Jürgen Arning
- German Environment Agency UBA, Wörlitzer Platz 1, 06844 Dessau-Roßlau, Germany
| | - Franziska Kaßner
- German Environment Agency UBA, Wörlitzer Platz 1, 06844 Dessau-Roßlau, Germany
| | - Björn Windshügel
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, ScreeningPort, Hamburg, Germany.
| | - Elke Eilebrecht
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Department of Ecotoxicology, Schmallenberg, Germany.
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18
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Olaniyan LWB, Okoh OO, Mkwetshana NT, Okoh AI. Environmental Water Pollution, Endocrine Interference and Ecotoxicity of 4-tert-Octylphenol: A Review. REVIEWS OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2020; 248:81-109. [PMID: 30460491 DOI: 10.1007/398_2018_20] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
4-tert-Octylphenol is a degradation product of non-ionic surfactants alkylphenol polyethoxylates as well as raw material for a number of industrial applications. It is a multimedia compound having been detected in all environmental compartments such as indoor air and surface waters. The pollutant is biodegradable, but certain degradation products are more toxic than the parent compound. Newer removal techniques from environmental waters have been presented, but they still require development for large-scale applications. Wastewater treatment by plant enzymes such as peroxidases offers promise in total removal of 4-tert-octylphenol leaving less toxic degradation products. The pollutant's endocrine interference has been well reported but more in oestrogens than in any other signalling pathways through which it is believed to exert toxicity on human and wildlife. In this paper we carried out a review of the activities of this pollutant in environmental waters, endocrine interference and relevance to its toxicities and concluded that inadequate knowledge of its endocrine activities impedes understanding of its toxicity which may frustrate current efforts at ridding the compound from the environment.
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Affiliation(s)
- Lamidi W B Olaniyan
- South Africa Medical Research Council, Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice, South Africa.
- Applied and Environmental Microbiology Research Group, Department of Biochemistry and Microbiology, University of Fort Hare, Alice, South Africa.
| | - Omobola O Okoh
- South Africa Medical Research Council, Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice, South Africa
- Department of Pure and Applied Chemistry, University of Fort Hare, Alice, South Africa
| | - Noxolo T Mkwetshana
- Applied and Environmental Microbiology Research Group, Department of Biochemistry and Microbiology, University of Fort Hare, Alice, South Africa
| | - Anthony I Okoh
- South Africa Medical Research Council, Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice, South Africa
- Applied and Environmental Microbiology Research Group, Department of Biochemistry and Microbiology, University of Fort Hare, Alice, South Africa
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19
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Périan S, Cerutti C, Forcet C, Tribollet V, Vanacker JM. A Cell-Based Method to Detect Agonist and Antagonist Activities of Endocrine-Disrupting Chemicals on GPER. Front Endocrinol (Lausanne) 2020; 11:547. [PMID: 32922363 PMCID: PMC7456940 DOI: 10.3389/fendo.2020.00547] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 07/06/2020] [Indexed: 11/13/2022] Open
Abstract
Endocrine-disrupting chemicals (EDCs) are exogenous compounds that impact endogenous hormonal systems, resulting in adverse health effects. These chemicals can exert their actions by interfering with several pathways. Simple biological systems to determine whether EDCs act positively or negatively on a given receptor are often lacking. Here we describe a low-to-middle throughput method to screen the agonist/antagonist potential of EDCs specifically on the GPER membrane estrogen receptor. Application of this assay to 23 candidate EDCs from different chemical families reveals the existence of six agonists and six antagonists.
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20
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Zhu L, Li W, Zha J, Li N, Wang Z. Chronic thiamethoxam exposure impairs the HPG and HPT axes in adult Chinese rare minnow (Gobiocypris rarus): Docking study, hormone levels, histology, and transcriptional responses. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 185:109683. [PMID: 31550567 DOI: 10.1016/j.ecoenv.2019.109683] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 09/13/2019] [Accepted: 09/15/2019] [Indexed: 06/10/2023]
Abstract
Thiamethoxam has emerged as an environmental contaminant detected in aqueous environments, and its endocrine-disrupting effect at chronic exposure in teleosts remains unknown. In the present study, a docking experiment and an in vivo test were integrated to systematically explore the toxic mechanisms of thiamethoxam in fish. Histological analysis, plasma VTG and hormone level (E2, 11-KT, T3 and T4) determinations, and HPG and HPT gene expression quantification were performed after Chinese rare minnow (Gobiocypris rarus) was exposed to thiamethoxam (0, 0.5, 5, and 50 μg/L) for 90 days. According to the docking study, thiamethoxam had different interactions with ERα, AR and TRα via hydrogen bonding. A decrease in body length and plasma T4 was observed in both genders. The histological damage in liver and delayed gonadal development were observed in both genders at 50 μg/L thiamethoxam treatment. In males, the following HPG axis genes were upregulated: gnrh and cyp19b in the brain; vtg and cyp19a in the liver; and cyp17 and cyp19a in the gonad. In females, erɑ in the liver was significantly upregulated with 0.5 μg/L thiamethoxam treatment, and cyp17 in the gonad was upregulated with all treatment. The suppression of cyp19a, gnrh, cyp11a, and ttr was observed at the concentration of 5 μg/L in the female liver. Taken together, the endocrine system of Chinese rare minnow might be disrupted after chronic exposure to thiamethoxam.
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Affiliation(s)
- Lifei Zhu
- Beijing Fisheries Research Institute, Beijing, 100068, China
| | - Wei Li
- Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
| | - Jinmiao Zha
- State Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Beijing Key Laboratory of Industrial Wastewater Treatment and Reuse, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Na Li
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing, 100085, China
| | - Zijian Wang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing, 100085, China
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21
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Er EÖ, Çağlak A, Engin GÖ, Bakirdere S. Ultrasound-assisted dispersive solid phase extraction based on Fe3O4/reduced graphene oxide nanocomposites for the determination of 4-tert octylphenol and atrazine by gas chromatography–mass spectrometry. Microchem J 2019. [DOI: 10.1016/j.microc.2019.01.040] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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22
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Grimaldi M, Boulahtouf A, Toporova L, Balaguer P. Functional profiling of bisphenols for nuclear receptors. Toxicology 2019; 420:39-45. [PMID: 30951782 DOI: 10.1016/j.tox.2019.04.003] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 03/21/2019] [Accepted: 04/01/2019] [Indexed: 11/19/2022]
Abstract
Bisphenol-A (BPA) is one of the most abundant chemicals produced worldwide. Exposure to BPA has been associated with various physiological dysregulations, involving reproduction, development, metabolism, as well as genesis and progression of hormone-dependent cancers. It has been well published that BPA along with its analogs bind and activate estrogen receptors (ER) α and β, estrogen related receptor (ERR) γ and pregnan X receptor (PXR). BPA has been also characterized as an inhibitor of the androgen (AR) and progesterone (PR) receptor. Thus, the need for safer alternatives to BPA among bisphenols is rising. In this regard, we used reporter cell lines to analyze the effects of 24 bisphenols on the selected nuclear receptors (NRs), known and potential targets of BPA. We showed that bisphenols differently modulated the activities of NRs. ERs, ERRγ and PXR were generally activated by bisphenols, whereas many compounds of this family acted as AR, PR, GR and MR antagonists. On the other hand, some bisphenols such as BPA, BPC and BPE modulated the activity of several NRs, but others lacked the activity of other NRs. Altogether, these data provide the guidelines for development of safer BPA substitutes with reduced hormonal activity.
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Affiliation(s)
- Marina Grimaldi
- Institut de Recherche en Cancérologie de Montpellier (IRCM), INSERM U1194, ICM, Univ. Montpellier, 34090, Montpellier, France
| | - Abdelhay Boulahtouf
- Institut de Recherche en Cancérologie de Montpellier (IRCM), INSERM U1194, ICM, Univ. Montpellier, 34090, Montpellier, France
| | - Lucia Toporova
- Institut de Recherche en Cancérologie de Montpellier (IRCM), INSERM U1194, ICM, Univ. Montpellier, 34090, Montpellier, France
| | - Patrick Balaguer
- Institut de Recherche en Cancérologie de Montpellier (IRCM), INSERM U1194, ICM, Univ. Montpellier, 34090, Montpellier, France.
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Pahigian JM, Zuo Y. Occurrence, endocrine-related bioeffects and fate of bisphenol A chemical degradation intermediates and impurities: A review. CHEMOSPHERE 2018; 207:469-480. [PMID: 29807346 DOI: 10.1016/j.chemosphere.2018.05.117] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2017] [Revised: 05/16/2018] [Accepted: 05/20/2018] [Indexed: 06/08/2023]
Abstract
In recent decades, increasing attention has been directed toward the effects of bisphenol A (BPA) as an environmental pollutant, primarily due to its demonstrated endocrine-disruptive effects. A growing body of evidence indicates that many BPA derivatives also exhibit endocrine activity and other adverse biological properties. A review of the published literature was performed to identify BPA degradation intermediates resulting from chemical degradation processes of BPA, as well as BPA's associated co-pollutants. Products of biological metabolism were not included in this study. Seventy-nine chemicals were identified. Of these chemicals, a subset - those containing two 6-membered aromatic rings connected by a central ring-linking carbon - was identified, and a further literature review was conducted to identify demonstrated biological effects associated with the chemicals in this subset. The objectives of this review were to assess the potential risks to human and environmental health associated with BPA derivatives, characterize our current understanding of BPA's degradation intermediates and co-pollutants, and aid in the identification of compounds of interest that have received insufficient scrutiny.
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Affiliation(s)
- Jamie M Pahigian
- Department of Chemistry and Biochemistry, University of Massachusetts Dartmouth and University of Massachusetts Graduate School of Marine Sciences and Technology, 285 Old Westport Road, North Dartmouth, MA 02747, USA
| | - Yuegang Zuo
- Department of Chemistry and Biochemistry, University of Massachusetts Dartmouth and University of Massachusetts Graduate School of Marine Sciences and Technology, 285 Old Westport Road, North Dartmouth, MA 02747, USA.
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24
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Gupta S, Guha P, Majumder S, Pal P, Sen K, Chowdhury P, Chakraborty A, Panigrahi AK, Mukherjee D. Effects of bisphenol A (BPA) on brain-specific expression of cyp19a1b gene in swim-up fry of Labeo rohita. Comp Biochem Physiol C Toxicol Pharmacol 2018; 209:63-71. [PMID: 29654925 DOI: 10.1016/j.cbpc.2018.04.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 04/05/2018] [Accepted: 04/10/2018] [Indexed: 02/07/2023]
Abstract
Estrogen regulates numerous developmental and physiological processes and effects are mediated mainly by estrogenic receptors (ERs), which function as ligand-regulated transcription factor. ERs can be activated by many different types endocrine disrupting chemicals (EDCs) and interfere with behaviour and reproductive potential of living organism. Estrogenic regulation of membrane associated G protein-coupled estrogen receptor, GPER activity has also been reported. Bisphenol A (BPA), a ubiquitous endocrine disruptor is present in many household products, has been linked to many adverse effect on sexual development and reproductive potential of wild life species. The present work is aimed to elucidate how an environmentally pervasive chemical BPA affects in vivo expression of a known estrogen target gene, cyp19a1b in the brain, and a known estrogenic biomarker, vitellogenin (Vg) in the whole body homogenate of 30 days post fertilization (dpf) swim-up fry of Labeo rohita. We confirm that, like estrogen, the xenoestrogen BPA exposure for 5-15 days induces strong overexpression of cyp19a1b, but not cyp19a1a mRNA in the brain and increase concentration of vitellogenin in swim-up fry. BPA also induces strong overexpression of aromatase B protein and aromatase activity in brain. Experiments using selective modulators of classical ERs and GPER argue that this induction is largely through nuclear ERs, not through GPER. Thus, BPA has the potential to elevate the levels of aromatase and thereby, levels of endogenous estrogen in developing brain. These results indicate that L. rohita swim-up fry can be used to detect environmental endocrine disruptors either using cyp19a1b gene expression or vitellogenin induction.
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Affiliation(s)
- Shreyasi Gupta
- Endocrinology Laboratory, Department of Zoology, University of Kalyani, Kalyani 741235, West Bengal, India
| | - Payel Guha
- Endocrinology Laboratory, Department of Zoology, University of Kalyani, Kalyani 741235, West Bengal, India
| | - Suravi Majumder
- Endocrinology Laboratory, Department of Zoology, University of Kalyani, Kalyani 741235, West Bengal, India
| | - Puja Pal
- Department of Zoology, Taki Government College, Taki, Hasnabad, West Bengal 743429, India
| | - Koushik Sen
- Endocrinology Laboratory, Department of Zoology, University of Kalyani, Kalyani 741235, West Bengal, India
| | - Piyali Chowdhury
- Endocrinology Laboratory, Department of Zoology, University of Kalyani, Kalyani 741235, West Bengal, India
| | - Arindam Chakraborty
- Endocrinology Laboratory, Department of Zoology, University of Kalyani, Kalyani 741235, West Bengal, India
| | - Ashis Kumar Panigrahi
- Ecotoxicology and Aquaculture Laboratory, Department of Zoology, University of Kalyani, Kalyani 741235, West Bengal, India
| | - Dilip Mukherjee
- Endocrinology Laboratory, Department of Zoology, University of Kalyani, Kalyani 741235, West Bengal, India.
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MacKay H, Abizaid A. A plurality of molecular targets: The receptor ecosystem for bisphenol-A (BPA). Horm Behav 2018; 101:59-67. [PMID: 29104009 DOI: 10.1016/j.yhbeh.2017.11.001] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 09/29/2017] [Accepted: 11/01/2017] [Indexed: 01/01/2023]
Abstract
Bisphenol-A (BPA) is a well-known endocrine disrupting compound (EDC), capable of affecting the normal function and development of the reproductive system, brain, adipose tissue, and more. In spite of these diverse and well characterized effects, there is often comparatively little known about the molecular mechanisms which bring them about. BPA has traditionally been regarded as a primarily estrogenic EDC, and this perspective is often what guides research into the effects of BPA. However, emerging data from in-vitro and in-silico models show that BPA binds with a significant number of hormone receptors, including a number of nuclear and membrane-bound estrogen receptors, androgen receptors, as well as the thyroid hormone receptor, glucocorticoid receptor, and PPARγ. With this increased diversity of receptor targets, it may be possible to explain some of the more puzzling aspects of BPA pharmacology, including its non-monotonic dose-response curve, as well as experimental results which disagree with estrogenic positive controls. This paper reviews the receptors for which BPA has a known interaction, and discusses the implications of taking these receptors into account when studying the disruptive effects of BPA on growth and development.
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Affiliation(s)
- Harry MacKay
- Department of Pediatrics, Baylor College of Medicine, USDA/ARS Childrens Nutrition Research Center, Houston, TX, USA.
| | - Alfonso Abizaid
- Department of Neuroscience, Carleton University, Ottawa, ON, Canada
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26
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Zhang J, Li T, Wang T, Guan T, Yu H, Li Z, Wang Y, Wang Y, Zhang T. Binding interactions of halogenated bisphenol A with mouse PPARα: In vitro investigation and molecular dynamics simulation. Toxicol Lett 2018; 283:32-38. [DOI: 10.1016/j.toxlet.2017.11.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 10/05/2017] [Accepted: 11/05/2017] [Indexed: 11/25/2022]
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27
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Ding G, Wang C, Vinturache A, Zhao S, Pan R, Han W, Chen L, Wang W, Yuan T, Gao Y, Tian Y. Prenatal low-level phenol exposures and birth outcomes in China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 607-608:1400-1407. [PMID: 28738530 DOI: 10.1016/j.scitotenv.2017.07.084] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 07/10/2017] [Accepted: 07/10/2017] [Indexed: 05/17/2023]
Abstract
Phenolic compounds are among the endocrine disruptors which are widely used in daily life products. Studies in laboratory animals showed reproductive and developmental effects. In spite of widespread exposure to phenols, only few studies examined their effects on human development. This study was designed to investigate the relationship between antenatal phenol exposure and birth outcomes in a Chinese obstetric population. Four hundred ninety-six mother-infant pairs recruited from the Laizhou Wan prospective birth cohort in northern China between 2010 and 2013 were included in the study. We measured two phenol metabolites in maternal urine at delivery and examined their associations with birth outcomes including birth weight, crown-heel length, head circumference, gestational age, and ponderal index. Median levels of bisphenol A (BPA) and triclosan (TCS) in urine were 1.07 and 0.50μg/g creatinine, respectively. After adjusting for confounders, a 10-fold increase in BPA levels was associated with a 0.63cm [95% confidence interval (CI): 0.25 to 1.01] increase in birth length among boys, but not among girls. No associations were found between TCS levels and any birth outcomes. The positive association of prenatal low-level BPA exposures with anthropometric measures observed among boys, suggests gender differences in the response to antenatal phenol exposure. Given the variability in urinary phenol levels reported during pregnancy, our findings based on levels of the target biomarkers in a single urine sample need to be confirmed in additional studies.
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Affiliation(s)
- Guodong Ding
- MOE and Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Department of Pediatrics, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Caifeng Wang
- Department of Environmental Health, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China; School of Nursing, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Angela Vinturache
- Department of Obstetrics & Gynaecology, John Radcliffe Hospital, Oxford University Hospital Trust, Headley Way, Oxford OX3 9DU, UK.
| | - Shasha Zhao
- MOE and Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Rui Pan
- Department of Environmental Health, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wenchao Han
- MOE and Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Limei Chen
- Department of Environmental Health, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Weiye Wang
- MOE and Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Tao Yuan
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, China.
| | - Yu Gao
- Department of Environmental Health, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Ying Tian
- MOE and Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Department of Environmental Health, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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28
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Pitaya Extracts Induce Growth Inhibition and Proapoptotic Effects on Human Cell Lines of Breast Cancer via Downregulation of Estrogen Receptor Gene Expression. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:7865073. [PMID: 28761624 PMCID: PMC5518493 DOI: 10.1155/2017/7865073] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 04/11/2017] [Accepted: 05/07/2017] [Indexed: 11/20/2022]
Abstract
Breast cancer is one of the most prevalent cancers in the world and is also the leading cause of cancer death in women. The use of bioactive compounds of functional foods contributes to reduce the risk of chronic diseases, such as cancer and vascular disorders. In this study, we evaluated the antioxidant potential and the influence of pitaya extract (PE) on cell viability, colony formation, cell cycle, apoptosis, and expression of BRCA1, BRCA2, PRAB, and Erα in breast cancer cell lines (MCF-7 and MDA-MB-435). PE showed high antioxidant activity and high values of anthocyanins (74.65 ± 2.18). We observed a selective decrease in cell proliferation caused by PE in MCF-7 (ER+) cell line. Cell cycle analysis revealed that PE induced an increase in G0/G1 phase followed by a decrease in G2/M phase. Also, PE induced apoptosis in MCF-7 (ER+) cell line and suppressed BRCA1, BRCA2, PRAB, and Erα gene expression. Finally, we also demonstrate that no effect was observed with MDA-MB-435 cells (ER−) after PE treatment. Taken together, the present study suggests that pitaya may have a protective effect against breast cancer.
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29
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An effect-directed strategy for characterizing emerging chemicals in food contact materials made from paper and board. Food Chem Toxicol 2017; 106:250-259. [DOI: 10.1016/j.fct.2017.05.061] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 05/11/2017] [Accepted: 05/26/2017] [Indexed: 11/21/2022]
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30
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Olak-Kucharczyk M, Ledakowicz S. Advanced oxidation of preservative agents in H 2O 2/UVC system - Kinetics study, transformation products and toxicity assessment. JOURNAL OF HAZARDOUS MATERIALS 2017; 333:348-357. [PMID: 28411531 DOI: 10.1016/j.jhazmat.2017.03.047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 02/24/2017] [Accepted: 03/22/2017] [Indexed: 06/07/2023]
Abstract
Phenylphenol isomers (hydroxylated derivatives of biphenyl) are widely used as a preservative agents and disinfectants in many branches of industry. This work focuses on removal of phenylphenol isomers from aqueous solution using H2O2/UVC process. The influence of different operating variables such as pH, initial concentration of hydrogen peroxide, initial concentration of target compounds, fluence rate and presence of radical scavengers on degradation rate was investigated. Moreover, transformation products and toxicity of the reaction solutions were studied. The reaction rate constants of hydroxyl radicals with phenylphenol isomers were determined by using classical and competition kinetics. The value of reaction rate constant depends on the position of the hydroxyl group in the aromatic ring and follows the order: ortho- phenylphenol<meta- phenylphenol<para- phenylphenol. The main by-products of initial degradation steps were dihydroxybiphenyl isomers, phenol and isomers of 2,4-hexadienoic-6-oxo-6-phenyl acid or trihydroxybiphenyl. A properly selected degradation time led to mineralization of reaction solution, and after 2h of reaction the total organic carbon reduction was equaled to 89, 87 and 71% for ortho- phenylphenol, meta- phenylphenol and para- phenylphenol solution, respectively. The application of advanced oxidation in H2O2/UVC system led to achieving non-toxic reaction solutions.
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Affiliation(s)
- Magdalena Olak-Kucharczyk
- Textile Research Institute, ul. Brzezinska 5/15, 92-103 Lodz, Poland; Lodz University of Technology, Faculty of Process and Environmental Engineering, Department of Bioprocess Engineering, ul. Wolczanska 213, 90-924 Lodz, Poland.
| | - Stanisław Ledakowicz
- Lodz University of Technology, Faculty of Process and Environmental Engineering, Department of Bioprocess Engineering, ul. Wolczanska 213, 90-924 Lodz, Poland
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31
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Rodríguez-Gómez R, Martín J, Zafra-Gómez A, Alonso E, Vílchez JL, Navalón A. Biomonitoring of 21 endocrine disrupting chemicals in human hair samples using ultra-high performance liquid chromatography-tandem mass spectrometry. CHEMOSPHERE 2017; 168:676-684. [PMID: 27839885 DOI: 10.1016/j.chemosphere.2016.11.008] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 10/09/2016] [Accepted: 11/02/2016] [Indexed: 06/06/2023]
Abstract
Rapid industrial growth has increased human exposure to a large variety of chemicals with adverse health effects. These industrial chemicals are usually present in the environment, foods, beverages, clothes and personal care products. Among these compounds, endocrine disrupting chemicals (EDCs) have raised concern over the last years. In the present work, the determination of 21 EDCs in human hair samples is proposed. An analytical method based on the digestion of the samples with a mixture of acetic acid/methanol (20:80, v/v) followed by a solid-liquid microextraction and analysis by ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) was developed and validated. The most influential parameters affecting the extraction method were optimized. The method was validated using matrix-matched calibration and recovery assays. Limits of detection ranged from 0.2 to 4 ng g-1, limits of quantification from 0.5 to 12 ng g-1, and inter- and intra-day variability was under 15% in all cases. Recovery rates for spiked samples ranged from 92.1 to 113.8%. The method was applied for the determination of the selected compounds in human hair. Samples were collected weekly from six randomly selected volunteers (three men and three women) over a three-month period. All the analyzed samples tested positive for at least one of the analyzed compounds.
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Affiliation(s)
- R Rodríguez-Gómez
- Research Group of Analytical Chemistry and Life Sciences, Department of Analytical Chemistry, University of Granada, Campus of Fuentenueva, E-18071 Granada, Spain
| | - J Martín
- Department of Analytical Chemistry, Superior Polytechnic School, University of Seville, C/ Virgen de África 7, E-41011 Seville, Spain
| | - A Zafra-Gómez
- Research Group of Analytical Chemistry and Life Sciences, Department of Analytical Chemistry, University of Granada, Campus of Fuentenueva, E-18071 Granada, Spain.
| | - E Alonso
- Department of Analytical Chemistry, Superior Polytechnic School, University of Seville, C/ Virgen de África 7, E-41011 Seville, Spain
| | - J L Vílchez
- Research Group of Analytical Chemistry and Life Sciences, Department of Analytical Chemistry, University of Granada, Campus of Fuentenueva, E-18071 Granada, Spain
| | - A Navalón
- Research Group of Analytical Chemistry and Life Sciences, Department of Analytical Chemistry, University of Granada, Campus of Fuentenueva, E-18071 Granada, Spain
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32
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Sharifan A, Hajhoseini A, Bakhtiari M. Clinical trial and in vitrostudy investigating topical application of Zataria multiflora Boiss.and Matricaria chamomillaextracts for androgenetic alopecia. COGENT MEDICINE 2017. [DOI: 10.1080/2331205x.2017.1421405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- Anoosheh Sharifan
- Department of Food Science and Technology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Ashraf Hajhoseini
- Health Products Safety Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
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33
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Asencio-Hernández J, Kieffer B, Delsuc MA. NMR WaterLOGSY Reveals Weak Binding of Bisphenol A with Amyloid Fibers of a Conserved 11 Residue Peptide from Androgen Receptor. PLoS One 2016; 11:e0161948. [PMID: 27583469 PMCID: PMC5008648 DOI: 10.1371/journal.pone.0161948] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 08/15/2016] [Indexed: 12/02/2022] Open
Abstract
There is growing evidence that bisphenol A (BPA), a molecule largely released in the environment, has detrimental effects on ecosystems and on human health. It acts as an endocrine disruptor targeting steroid hormone receptors, such as the estrogen receptor (ER), estrogen-related receptor (ERR) and androgen receptor (AR). BPA-derived molecules have recently been shown to interact with the AR N-terminal domain (AR-NTD), which is known to be largely intrinsically disordered. This N-terminal domain contains an 11 residue conserved domain that forms amyloid fibers upon oxidative dimerisation through its strictly conserved Cys240 residue. We investigate here the interaction of BPA, and other potential endocrine disruptors, with AR-NTD amyloid fibers using the WaterLOGSY NMR experiment. We observed a selective binding of these compounds to the amyloid fibers formed by the AR-NTD conserved region and glutamine homopolymers. This observation suggests that the high potency of endocrine disruptors may result, in part, from their ability to bind amyloid forms of nuclear receptors in addition to their cognate binding sites. This property may be exploited to design future therapeutic strategies targeting AR related diseases such as the spinal bulbar muscular atrophy or prostate cancer. The ability of NMR WaterLOGSY experiments to detect weak interactions between small ligands and amyloid fibers may prove to be of particular interest for identifying promising hit molecules.
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Affiliation(s)
- Julia Asencio-Hernández
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM U596, CNRS UMR 7104, Université de Strasbourg, Illkirch-Graffenstaden, France
| | - Bruno Kieffer
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM U596, CNRS UMR 7104, Université de Strasbourg, Illkirch-Graffenstaden, France
| | - Marc-André Delsuc
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM U596, CNRS UMR 7104, Université de Strasbourg, Illkirch-Graffenstaden, France
- * E-mail:
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34
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Pinto CL, Mansouri K, Judson R, Browne P. Prediction of Estrogenic Bioactivity of Environmental Chemical Metabolites. Chem Res Toxicol 2016; 29:1410-27. [PMID: 27509301 DOI: 10.1021/acs.chemrestox.6b00079] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The US Environmental Protection Agency's (EPA) Endocrine Disruptor Screening Program (EDSP) is using in vitro data generated from ToxCast/Tox21 high-throughput screening assays to assess the endocrine activity of environmental chemicals. Considering that in vitro assays may have limited metabolic capacity, inactive chemicals that are biotransformed into metabolites with endocrine bioactivity may be missed for further screening and testing. Therefore, there is a value in developing novel approaches to account for metabolism and endocrine activity of both parent chemicals and their associated metabolites. We used commercially available software to predict metabolites of 50 parent compounds, out of which 38 chemicals are known to have estrogenic metabolites, and 12 compounds and their metabolites are negative for estrogenic activity. Three ER QSAR models were used to determine potential estrogen bioactivity of the parent compounds and predicted metabolites, the outputs of the models were averaged, and the chemicals were then ranked based on the total estrogenicity of the parent chemical and metabolites. The metabolite prediction software correctly identified known estrogenic metabolites for 26 out of 27 parent chemicals with associated metabolite data, and 39 out of 46 estrogenic metabolites were predicted as potential biotransformation products derived from the parent chemical. The QSAR models estimated stronger estrogenic activity for the majority of the known estrogenic metabolites compared to their parent chemicals. Finally, the three models identified a similar set of parent compounds as top ranked chemicals based on the estrogenicity of putative metabolites. This proposed in silico approach is an inexpensive and rapid strategy for the detection of chemicals with estrogenic metabolites and may reduce potential false negative results from in vitro assays.
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Affiliation(s)
- Caroline L Pinto
- Office of Chemical Safety and Pollution Prevention, US Environmental Protection Agency , 1200 Pennsylvania Avenue, N.W., Washington, DC 20460, United States.,Oak Ridge Institute for Science and Education , MC-100-44, P.O. Box 117, Oak Ridge, Tennessee 37831-0117, United States
| | - Kamel Mansouri
- Oak Ridge Institute for Science and Education , MC-100-44, P.O. Box 117, Oak Ridge, Tennessee 37831-0117, United States.,Office of Research and Development, US Environmental Protection Agency , Research Triangle Park, North Carolina 27711, United States
| | - Richard Judson
- Office of Research and Development, US Environmental Protection Agency , Research Triangle Park, North Carolina 27711, United States
| | - Patience Browne
- Office of Chemical Safety and Pollution Prevention, US Environmental Protection Agency , 1200 Pennsylvania Avenue, N.W., Washington, DC 20460, United States
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35
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Khadrawy YA, Noor NA, Mourad IM, Ezz HSA. Neurochemical impact of bisphenol A in the hippocampus and cortex of adult male albino rats. Toxicol Ind Health 2016; 32:1711-9. [DOI: 10.1177/0748233715579803] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Bisphenol A (BPA), an endocrine-disrupting chemical, is widely used in the manufacture of polycarbonated plastics and epoxy resins and line metal beverage cans. Growing evidence suggests that BPA acts directly on neuronal functions as it is lipophilic and could accumulate in the brain. The present study aims to investigate the effect of two doses of BPA (10 mg/kg for 6 and 10 weeks and 25 mg/kg for 6 weeks) on excitatory (glutamate and aspartate) and inhibitory (γ-aminobutyric acid, glycine, and taurine) amino acid neurotransmitter levels in the cortex and hippocampus. This study extends to investigate the effect of BPA on acetylcholinesterase (AchE) activity and some oxidative stress parameters in the two regions. In the cortex, a significant increase in the excitatory and a significant decrease in the inhibitory amino acids occurred after BPA (10 mg/kg for 10 weeks and 25 mg/kg for 6 weeks). This was accompanied by a significant increase in lipid peroxidation, nitric oxide, and reduced glutathione after 6 weeks of BPA (25 mg/kg). In the hippocampus, a significant increase in the excitatory and inhibitory amino acid neurotransmitters occurred after 6 weeks of BPA. Hippocampal lipid peroxidation increased significantly after BPA exposure and hippocampal reduced glutathione increased significantly after 6 weeks of BPA exposure (10 mg/kg). BPA induced a significant increase in cortical and hippocampal AchE activity. The present neurochemical changes in the cortex and hippocampus suggest that BPA induced a state of excitotoxicity and oxidative stress. This may raise concerns about the exposure of humans to BPA due to its wide applications in industry.
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Affiliation(s)
- Yasser A Khadrawy
- Department of Medical Physiology, Medical Division, National Research Center, Giza, Egypt
| | - Neveen A Noor
- Department of Zoology, Faculty of Science, Cairo University, Giza, Egypt
| | - Iman M Mourad
- Department of Zoology, Faculty of Science, Cairo University, Giza, Egypt
| | - Heba S Aboul Ezz
- Department of Zoology, Faculty of Science, Cairo University, Giza, Egypt
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36
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Kazane I, Gorgy K, Gondran C, Spinelli N, Zazoua A, Defrancq E, Cosnier S. Highly Sensitive Bisphenol-A Electrochemical Aptasensor Based on Poly(Pyrrole-Nitrilotriacetic Acid)-Aptamer Film. Anal Chem 2016; 88:7268-73. [DOI: 10.1021/acs.analchem.6b01574] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Imen Kazane
- Univ.
Grenoble Alpes, Département de Chimie Moléculaire, UMR CNRS 5250, 570 rue de la Chimie, CS 40700, 38058 Grenoble cedex 9, France
- Université de Jijel, Laboratoire de Matériaux:
Elaborations-Propriétés-Applications, BP 98, Ouled Aissa, 18000 Jijel, Algeria
| | - Karine Gorgy
- Univ.
Grenoble Alpes, Département de Chimie Moléculaire, UMR CNRS 5250, 570 rue de la Chimie, CS 40700, 38058 Grenoble cedex 9, France
| | - Chantal Gondran
- Univ.
Grenoble Alpes, Département de Chimie Moléculaire, UMR CNRS 5250, 570 rue de la Chimie, CS 40700, 38058 Grenoble cedex 9, France
| | - Nicolas Spinelli
- Univ.
Grenoble Alpes, Département de Chimie Moléculaire, UMR CNRS 5250, 570 rue de la Chimie, CS 40700, 38058 Grenoble cedex 9, France
| | - Ali Zazoua
- Université de Jijel, Laboratoire de Matériaux:
Elaborations-Propriétés-Applications, BP 98, Ouled Aissa, 18000 Jijel, Algeria
| | - E. Defrancq
- Univ.
Grenoble Alpes, Département de Chimie Moléculaire, UMR CNRS 5250, 570 rue de la Chimie, CS 40700, 38058 Grenoble cedex 9, France
| | - Serge Cosnier
- Univ.
Grenoble Alpes, Département de Chimie Moléculaire, UMR CNRS 5250, 570 rue de la Chimie, CS 40700, 38058 Grenoble cedex 9, France
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37
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Madak-Erdogan Z, Kim SH, Gong P, Zhao YC, Zhang H, Chambliss KL, Carlson KE, Mayne CG, Shaul PW, Korach KS, Katzenellenbogen JA, Katzenellenbogen BS. Design of pathway preferential estrogens that provide beneficial metabolic and vascular effects without stimulating reproductive tissues. Sci Signal 2016; 9:ra53. [PMID: 27221711 PMCID: PMC4896643 DOI: 10.1126/scisignal.aad8170] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
There is great medical need for estrogens with favorable pharmacological profiles that support desirable activities for menopausal women, such as metabolic and vascular protection, but that lack stimulatory activities on the breast and uterus. We report the development of structurally novel estrogens that preferentially activate a subset of estrogen receptor (ER) signaling pathways and result in favorable target tissue-selective activity. Through a process of structural alteration of estrogenic ligands that was designed to preserve their essential chemical and physical features but greatly reduced their binding affinity for ERs, we obtained "pathway preferential estrogens" (PaPEs), which interacted with ERs to activate the extranuclear-initiated signaling pathway preferentially over the nuclear-initiated pathway. PaPEs elicited a pattern of gene regulation and cellular and biological processes that did not stimulate reproductive and mammary tissues or breast cancer cells. However, in ovariectomized mice, PaPEs triggered beneficial responses both in metabolic tissues (adipose tissue and liver) that reduced body weight gain and fat accumulation and in the vasculature that accelerated repair of endothelial damage. This process of designed ligand structure alteration represents a novel approach to develop ligands that shift the balance in ER-mediated extranuclear and nuclear pathways to obtain tissue-selective, non-nuclear PaPEs, which may be beneficial for postmenopausal hormone replacement. The approach may also have broad applicability for other members of the nuclear hormone receptor superfamily.
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Affiliation(s)
- Zeynep Madak-Erdogan
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Sung Hoon Kim
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Ping Gong
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Yiru C Zhao
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Hui Zhang
- Center for Pulmonary and Vascular Biology, Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX 75390-9063, USA
| | - Ken L Chambliss
- Center for Pulmonary and Vascular Biology, Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX 75390-9063, USA
| | - Kathryn E Carlson
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Christopher G Mayne
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Philip W Shaul
- Center for Pulmonary and Vascular Biology, Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX 75390-9063, USA
| | - Kenneth S Korach
- National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | | | - Benita S Katzenellenbogen
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
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38
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Haselman JT, Kosian PA, Korte JJ, Olmstead AW, Iguchi T, Johnson RD, Degitz SJ. Development of the Larval Amphibian Growth and Development Assay: effects of chronic 4-tert-octylphenol or 17β-trenbolone exposure inXenopus laevisfrom embryo to juvenile. J Appl Toxicol 2016; 36:1639-1650. [DOI: 10.1002/jat.3330] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 02/25/2016] [Accepted: 03/14/2016] [Indexed: 01/10/2023]
Affiliation(s)
| | - Patricia A. Kosian
- US EPA Mid-Continent Ecology Division; 6201 Congdon Blvd Duluth MN 55804 USA
| | - Joseph J. Korte
- US EPA Mid-Continent Ecology Division; 6201 Congdon Blvd Duluth MN 55804 USA
| | - Allen W. Olmstead
- US EPA Mid-Continent Ecology Division; 6201 Congdon Blvd Duluth MN 55804 USA
| | - Taisen Iguchi
- Okazaki Institute for Integrative Bioscience, National Institute for Basic Biology; National Institutes of Natural Sciences; 5-1 Higashiyama, Myodaiji Okazaki Aichi 444-8787 Japan
| | - Rodney D. Johnson
- US EPA Mid-Continent Ecology Division; 6201 Congdon Blvd Duluth MN 55804 USA
| | - Sigmund J. Degitz
- US EPA Mid-Continent Ecology Division; 6201 Congdon Blvd Duluth MN 55804 USA
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39
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Hass U, Christiansen S, Boberg J, Rasmussen MG, Mandrup K, Axelstad M. Low-dose effect of developmental bisphenol A exposure on sperm count and behaviour in rats. Andrology 2016; 4:594-607. [PMID: 27089241 DOI: 10.1111/andr.12176] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 01/25/2016] [Accepted: 01/28/2016] [Indexed: 01/10/2023]
Abstract
Bisphenol A is widely used in food contact materials and other products and is detected in human urine and blood. Bisphenol A may affect reproductive and neurological development; however, opinion of the European Food Safety Authority (EFSA) on bisphenol A (EFSA J, 13, 2015 and 3978) concluded that none of the available studies were robust enough to provide a point of departure for setting a tolerable daily intake for bisphenol A. In the present study, pregnant Wistar rats (n = 17-21) were gavaged from gestation day 7 to pup day 22 with bisphenol A doses of 0, 25 μg, 250 μg, 5 mg or 50 mg/kg bw/day. In the offspring, growth, sexual maturation, weights and histopathology of reproductive organs, oestrus cyclicity and sperm counts were assessed. Neurobehavioural development was investigated using a behavioural testing battery including tests for motor activity, sweet preference, anxiety and spatial learning. Decreased sperm count was found at the lowest bisphenol A dose, that is 25 μg/kg/day, but not at the higher doses. Reproductive organ weight and histology were not affected and no behavioural effects were seen in male offspring. In the female offspring, exposure to 25 μg/kg bw/day bisphenol A dose resulted in increased body weight late in life and altered spatial learning in a Morris water maze, indicating masculinization of the brain. Decreased intake of sweetened water was seen in females from the highest bisphenol A dose group, also a possible sign of masculinization. The other investigated endpoints were not significantly affected. In conclusion, the present study using a robust experimental study design, has shown that developmental exposure to 25 μg/kg bw/day bisphenol A can cause adverse effects on fertility (decreased sperm count), neurodevelopment (masculinization of spatial learning in females) and lead to increased female body weight late in life. These results suggest that the new EFSA temporary tolerable daily intake of 4 μg/kg bw/day is not sufficiently protective with regard to endocrine disrupting effects of bisphenol A in humans.
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Affiliation(s)
- U Hass
- National Food Institute, Division of Diet, Disease Prevention and Toxicology, Technical University of Denmark, Søborg, Denmark
| | - S Christiansen
- National Food Institute, Division of Diet, Disease Prevention and Toxicology, Technical University of Denmark, Søborg, Denmark
| | - J Boberg
- National Food Institute, Division of Diet, Disease Prevention and Toxicology, Technical University of Denmark, Søborg, Denmark
| | - M G Rasmussen
- National Food Institute, Division of Diet, Disease Prevention and Toxicology, Technical University of Denmark, Søborg, Denmark
| | - K Mandrup
- National Food Institute, Division of Diet, Disease Prevention and Toxicology, Technical University of Denmark, Søborg, Denmark
| | - M Axelstad
- National Food Institute, Division of Diet, Disease Prevention and Toxicology, Technical University of Denmark, Søborg, Denmark
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40
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Cano-Nicolau J, Vaillant C, Pellegrini E, Charlier TD, Kah O, Coumailleau P. Estrogenic Effects of Several BPA Analogs in the Developing Zebrafish Brain. Front Neurosci 2016; 10:112. [PMID: 27047331 PMCID: PMC4805609 DOI: 10.3389/fnins.2016.00112] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 03/07/2016] [Indexed: 11/26/2022] Open
Abstract
Important set of studies have demonstrated the endocrine disrupting activity of Bisphenol A (BPA). The present work aimed at defining estrogenic-like activity of several BPA structural analogs, including BPS, BPF, BPAF, and BPAP, on 4- or 7-day post-fertilization (dpf) zebrafish larva as an in vivo model. We measured the induction level of the estrogen-sensitive marker cyp19a1b gene (Aromatase B), expressed in the brain, using three different in situ/in vivo strategies: (1) Quantification of cyp19a1b transcripts using RT-qPCR in wild type 7-dpf larva brains exposed to bisphenols; (2) Detection and distribution of cyp19a1b transcripts using in situ hybridization on 7-dpf brain sections (hypothalamus); and (3) Quantification of the cyp19a1b promoter activity in live cyp19a1b-GFP transgenic zebrafish (EASZY assay) at 4-dpf larval stage. These three different experimental approaches demonstrated that BPS, BPF, or BPAF exposure, similarly to BPA, significantly activates the expression of the estrogenic marker in the brain of developing zebrafish. In vitro experiments using both reporter gene assay in a glial cell context and competitive ligand binding assays strongly suggested that up-regulation of cyp19a1b is largely mediated by the zebrafish estrogen nuclear receptor alpha (zfERα). Importantly, and in contrast to other tested bisphenol A analogs, the bisphenol AP (BPAP) did not show estrogenic activity in our model.
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Affiliation(s)
- Joel Cano-Nicolau
- Research Institute in Health, Environment and Occupation, Institut National de la Santé et de la Recherche Médicale U1085, SFR Biosite, Université de Rennes 1 Rennes, France
| | - Colette Vaillant
- Research Institute in Health, Environment and Occupation, Institut National de la Santé et de la Recherche Médicale U1085, SFR Biosite, Université de Rennes 1 Rennes, France
| | - Elisabeth Pellegrini
- Research Institute in Health, Environment and Occupation, Institut National de la Santé et de la Recherche Médicale U1085, SFR Biosite, Université de Rennes 1 Rennes, France
| | - Thierry D Charlier
- Research Institute in Health, Environment and Occupation, Institut National de la Santé et de la Recherche Médicale U1085, SFR Biosite, Université de Rennes 1 Rennes, France
| | - Olivier Kah
- Research Institute in Health, Environment and Occupation, Institut National de la Santé et de la Recherche Médicale U1085, SFR Biosite, Université de Rennes 1 Rennes, France
| | - Pascal Coumailleau
- Research Institute in Health, Environment and Occupation, Institut National de la Santé et de la Recherche Médicale U1085, SFR Biosite, Université de Rennes 1 Rennes, France
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41
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Wang RL, Biales AD, Garcia-Reyero N, Perkins EJ, Villeneuve DL, Ankley GT, Bencic DC. Fish connectivity mapping: linking chemical stressors by their mechanisms of action-driven transcriptomic profiles. BMC Genomics 2016; 17:84. [PMID: 26822894 PMCID: PMC4730593 DOI: 10.1186/s12864-016-2406-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 01/19/2016] [Indexed: 12/21/2022] Open
Abstract
Background A very large and rapidly growing collection of transcriptomic profiles in public repositories is potentially of great value to developing data-driven bioinformatics applications for toxicology/ecotoxicology. Modeled on human connectivity mapping (Cmap) in biomedical research, this study was undertaken to investigate the utility of an analogous Cmap approach in ecotoxicology. Over 3500 zebrafish (Danio rerio) and fathead minnow (Pimephales promelas) transcriptomic profiles, each associated with one of several dozen chemical treatment conditions, were compiled into three distinct collections of rank-ordered gene lists (ROGLs) by species and microarray platforms. Individual query signatures, each consisting of multiple gene probes differentially expressed in a chemical condition, were used to interrogate the reference ROGLs. Results Informative connections were established at high success rates within species when, as defined by their mechanisms of action (MOAs), both query signatures and ROGLs were associated with the same or similar chemicals. Thus, a simple query signature functioned effectively as an exposure biomarker without need for a time-consuming process of development and validation. More importantly, a large reference database of ROGLs also enabled a query signature to cross-interrogate other chemical conditions with overlapping MOAs, leading to novel groupings and subgroupings of seemingly unrelated chemicals at a finer resolution. This approach confirmed the identities of several estrogenic chemicals, as well as a polycyclic aromatic hydrocarbon and a neuro-toxin, in the largely uncharacterized water samples near several waste water treatment plants, and thus demonstrates its future potential utility in real world applications. Conclusions The power of Cmap should grow as chemical coverages of ROGLs increase, making it a framework easily scalable in the future. The feasibility of toxicity extrapolation across fish species using Cmap needs more study, however, as more gene expression profiles linked to chemical conditions common to multiple fish species are needed. Electronic supplementary material The online version of this article (doi:10.1186/s12864-016-2406-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Rong-Lin Wang
- Exposure Methods & Measurements Division, National Exposure Research Laboratory, US Environmental Protection Agency, 26 W Martin Luther King Dr., MS 587, Cincinnati, OH, 45268, USA.
| | - Adam D Biales
- Exposure Methods & Measurements Division, National Exposure Research Laboratory, US Environmental Protection Agency, 26 W Martin Luther King Dr., MS 587, Cincinnati, OH, 45268, USA.
| | - Natalia Garcia-Reyero
- Environmental Laboratory, US Army Engineer Research and Development Center, US Army Corps of Engineers, 3909 Halls Ferry Rd, Vicksburg, MS, 39180, USA.
| | - Edward J Perkins
- Environmental Laboratory, US Army Engineer Research and Development Center, US Army Corps of Engineers, 3909 Halls Ferry Rd, Vicksburg, MS, 39180, USA.
| | - Daniel L Villeneuve
- Mid-Continent Ecology Division, National Health and Environmental Effects Research Laboratory, US Environmental Protection Agency, 6201 Congdon Boulevard, Duluth, MN, 55804, USA.
| | - Gerald T Ankley
- Mid-Continent Ecology Division, National Health and Environmental Effects Research Laboratory, US Environmental Protection Agency, 6201 Congdon Boulevard, Duluth, MN, 55804, USA.
| | - David C Bencic
- Exposure Methods & Measurements Division, National Exposure Research Laboratory, US Environmental Protection Agency, 26 W Martin Luther King Dr., MS 587, Cincinnati, OH, 45268, USA.
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42
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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] [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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Kim J, Kang EJ, Park MN, Kim JE, Kim SC, Jeung EB, Lee GS, Hwang DY, An BS. The adverse effect of 4-tert-octylphenol on fat metabolism in pregnant rats via regulation of lipogenic proteins. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2015; 40:284-291. [PMID: 26164745 DOI: 10.1016/j.etap.2015.06.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Revised: 06/14/2015] [Accepted: 06/19/2015] [Indexed: 06/04/2023]
Abstract
Alkylphenols such as 4-tert-octylphenol (OP), nonylphenol, and bisphenol A are classified as endocrine-disrupting chemicals (EDCs). Digestion and metabolism of food are controlled by many endocrine factors, including insulin, glucagon, and estrogen. These factors are differentially regulated during pregnancy. The alteration of nutritional intake and fat metabolism may affect the maintenance of pregnancy and supplementation of nutrients to the fetus, and therefore can cause severe metabolic diseases such as ketosis, marasmus and diabetes mellitus in pregnant individuals. In this study, we examined the effects of OP on fat metabolism in pregnant rats. Ethinyl estradiol (EE) was also administered as an estrogenic positive control. In our results, rats treated with OP showed significantly reduced body weights compared to the control group. In addition, histological analysis showed that the amount of fat deposited in adipocytes was reduced by OP treatment. To study the mechanism of action of OP in fat metabolism, we examined the expression levels of fat metabolism-associated genes in rat adipose tissue and liver by real-time PCR. OP and EE negatively regulated the expression of lipogenic enzymes, including FAS (fatty acid synthase), ACC-1 (acetyl-CoA carboxylase-1), and SCD-1 (stearoyl-CoA desaturase-1). The levels of lipogenic enzyme-associated transcription factors such as C/EBP-α (CAAT enhancer binding protein alpha) and SREBP-1c (sterol regulatory element binding protein-1c) were also reduced in both liver and adipose tissue. In summary, these findings suggest that OP has adverse effects on fat metabolism in pregnant rats and inhibits fat deposition via regulating lipogenic genes in the liver and adipose tissue. The altered fat metabolism by OP may affect the nutrition balance during pregnancy and can cause metabolism-related diseases.
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Affiliation(s)
- Jun Kim
- Department of Biomaterials Science, College of Natural Resources & Life Science/Life and Industry Convergence Research Institute, Pusan National University, 50 Cheonghak-ri, Samnangjin-eup, Miryang-si, Gyeongsangnam-do, Miryang 627-706, Republic of Korea
| | - Eun-Jin Kang
- Department of Biomaterials Science, College of Natural Resources & Life Science/Life and Industry Convergence Research Institute, Pusan National University, 50 Cheonghak-ri, Samnangjin-eup, Miryang-si, Gyeongsangnam-do, Miryang 627-706, Republic of Korea
| | - Mee-Na Park
- Department of Biomaterials Science, College of Natural Resources & Life Science/Life and Industry Convergence Research Institute, Pusan National University, 50 Cheonghak-ri, Samnangjin-eup, Miryang-si, Gyeongsangnam-do, Miryang 627-706, Republic of Korea
| | - Ji-Eun Kim
- Department of Biomaterials Science, College of Natural Resources & Life Science/Life and Industry Convergence Research Institute, Pusan National University, 50 Cheonghak-ri, Samnangjin-eup, Miryang-si, Gyeongsangnam-do, Miryang 627-706, Republic of Korea
| | - Seung-Chul Kim
- Department of Obstetrics and Gynecology, Biomedical Research Institute, Pusan National University School of Medicine, Busan, Republic of Korea
| | - Eui-Bae Jeung
- Laboratory of Veterinary Biochemistry and Molecular Biology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Geun-Shik Lee
- College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon 200-701, Republic of Korea
| | - Dae-Youn Hwang
- Department of Biomaterials Science, College of Natural Resources & Life Science/Life and Industry Convergence Research Institute, Pusan National University, 50 Cheonghak-ri, Samnangjin-eup, Miryang-si, Gyeongsangnam-do, Miryang 627-706, Republic of Korea
| | - Beum-Soo An
- Department of Biomaterials Science, College of Natural Resources & Life Science/Life and Industry Convergence Research Institute, Pusan National University, 50 Cheonghak-ri, Samnangjin-eup, Miryang-si, Gyeongsangnam-do, Miryang 627-706, Republic of Korea.
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Guida M, Troisi J, Ciccone C, Granozio G, Cosimato C, Di Spiezio Sardo A, Ferrara C, Guida M, Nappi C, Zullo F, Di Carlo C. Bisphenol A and congenital developmental defects in humans. Mutat Res 2015; 774:33-39. [PMID: 25796969 DOI: 10.1016/j.mrfmmm.2015.02.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 02/12/2015] [Accepted: 02/26/2015] [Indexed: 06/04/2023]
Abstract
Over 50% of the causes of fetal malformations in humans are still unknown. Recent evidence suggests the relationship between environmental exposure to endocrine disruptors and fetal malformations. Our study aims to establish the role of Bisphenol A (BPA), if any, in altering human reproduction. We enrolled 151 pregnant women who were divided into two groups: case group (CS, n=101), women with established diagnosis of developmental defect, and control group (CL, n=50), pregnant women with normally developed fetus. Total, free and conjugated BPA were measured in their blood using GC-MS with isotopic dilution. The results show a correlation between environmental exposure to BPA and the genesis of fetal malformations. Conjugated BPA, which was higher in the CL, casts light on the hypothesis that a reduced ability to metabolize the chemical in the mother can concur to the occurrence of malformation. In a more detailed manner, in case of chromosomal malformations, the average value of free BPA appears to be nearly three times greater than that of the controls. Similarly, in case of central and peripheral nervous system non-chromosomal malformations, the value of free BPA is nearly two times greater than that of the controls.
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Affiliation(s)
| | - Jacopo Troisi
- Department of Medicine, University of Salerno, Italy.
| | | | | | | | | | - Cinzia Ferrara
- Department of Medicine, "Federico II", University of Naples, Italy
| | - Marco Guida
- Department of Biology, "Federico II", University of Naples, Italy
| | - Carmine Nappi
- Department of Medicine, "Federico II", University of Naples, Italy
| | - Fulvio Zullo
- Department of Medicine, University of Salerno, Italy
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Structural bisphenol analogues differentially target steroidogenesis in murine MA-10 Leydig cells as well as the glucocorticoid receptor. Toxicology 2015; 329:10-20. [DOI: 10.1016/j.tox.2015.01.003] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Revised: 01/05/2015] [Accepted: 01/05/2015] [Indexed: 12/20/2022]
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46
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Marrocco G, Grammatico P, Vallasciani S, Gulia C, Zangari A, Marrocco F, Bateni ZH, Porrello A, Piergentili R. Environmental, parental and gestational factors that influence the occurrence of hypospadias in male patients. J Pediatr Urol 2015; 11:12-9. [PMID: 25725611 DOI: 10.1016/j.jpurol.2014.10.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2014] [Accepted: 10/29/2014] [Indexed: 01/09/2023]
Abstract
OBJECTIVE Hypospadias is a congenital defect, which affects normal development of the male urogenital external tract. In this malformation, the urethral orifice of the penis is positioned ventrally, thus interfering with normal urination and creating, in some adults, problems during sexual intercourse. Heritability of hypospadias has been shown in some reports, and the abnormality has been associated with the presence of mutations in one of the genes involved in urogenital development. However, even for patients who were born in families with a higher incidence rate of this defect, no evident genetic alteration could be identified in known genes, indicating that the list of loci involved is still incomplete. To further complicate matters, recent reports also underline that epigenetic changes, without any identifiable gene sequence mutation, may be involved in gene function impairment. Therefore, the inheritance of most hypospadias cases is not evident, suggesting that the genetic background is not the only cause of this malformation; indeed, the majority of hypospadias cases are classified as sporadic and idiopathic. MATERIALS AND METHODS Evidence has accumulated highlighting the role of the environment and of its relationships with the genome in the etiology of this abnormality. In particular, the interaction between some chemicals, which are able to mimic endogenous molecules such as sexual hormones--for this reason called endocrine disrupting compounds (EDC)--and specific receptors has been extensively investigated during the pregnancy. Additionally, several articles have shown that parental and gestational factors play a significant role too. Indeed, physiological alterations, such as body weight of the mother and/or of the newborn, mother's diabetes, impaired father fertility, and exposure of one parent to job-related pollutants, show in many cases a direct correlation with hypospadias incidence. The overall prevalence of this condition has been studied in many countries, suggesting that at least in some periods and/or in specific populations there are detectable fluctuations, probably mirroring the different natural environments. However, many articles present data that do not agree with these findings and, consequently, most causes of hypospadias are still highly debated. RESULTS In this review, we summarize the developmental steps involved in urogenital tract formation, with a particular emphasis on the genes that most frequently are associated with this condition, or that are subject to environmental stress, or that may be the targets of hormone-like, exogenous molecules. Then, we make an overview of the identified factors able to impair the function of important genes, even in the absence of their mutations, including those for which contradictory reports have been published. Finally, we propose an explanation of sporadic cases of hypospadias that reconciles these contradictions and suggest some steps for moving forward in the research focused on this condition. CONCLUSION We hypothesize that most patients develop hypospadias because of gene-environment interactions acting on polymorphic genes that, in the absence of environmental stimuli, would otherwise cause no developmental anomaly during urogenital development.
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Affiliation(s)
- Giacinto Marrocco
- UOC Division of Pediatric Surgery and Urology, Hospital San Camillo - Forlanini, Rome
| | - Paola Grammatico
- UOC Laboratory of Medical Genetics, San Camillo - Forlanini, Rome, Italy
| | | | - Caterina Gulia
- Department of Gynecology - Obstetrics and Urological Sciences, Policlinico Umberto I, Sapienza - University of Rome, Italy
| | - Andrea Zangari
- UOC Division of Pediatric Surgery and Urology, Hospital San Camillo - Forlanini, Rome
| | | | | | - Alessandro Porrello
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC, USA
| | - Roberto Piergentili
- Institute of Molecular Biology and Pathology, CNR, Department of Biology and Biotechnology, Sapienza - University of Rome, Italy.
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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] [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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Xiao X, Tu S, Zheng C, Zhong H, Zuo X, Nan J. l-Asparagine-assisted synthesis of flower-like β-Bi2O3 and its photocatalytic performance for the degradation of 4-phenylphenol under visible-light irradiation. RSC Adv 2015. [DOI: 10.1039/c5ra13985f] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
By introducing l-asparagine as a ligand, a flower-like precursor of Bi2O3 was prepared by a simple reflux process under atmospheric pressure. β-Bi2O3 was then conveniently obtained by decomposing the precursor and stabilized in a temperature range from room temperature to 420 °C due to the surface-coordination effects of CO32− derived from l-asparagine.
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Affiliation(s)
- Xin Xiao
- School of Chemistry and Environment
- South China Normal University
- Guangzhou Key Laboratory of Materials for Energy Conversion and Storage
- Guangzhou 510006
- PR China
| | - Shunheng Tu
- School of Chemistry and Environment
- South China Normal University
- Guangzhou Key Laboratory of Materials for Energy Conversion and Storage
- Guangzhou 510006
- PR China
| | - Chunxia Zheng
- School of Chemistry and Environment
- South China Normal University
- Guangzhou Key Laboratory of Materials for Energy Conversion and Storage
- Guangzhou 510006
- PR China
| | - Huan Zhong
- School of Chemistry and Environment
- South China Normal University
- Guangzhou Key Laboratory of Materials for Energy Conversion and Storage
- Guangzhou 510006
- PR China
| | - Xiaoxi Zuo
- School of Chemistry and Environment
- South China Normal University
- Guangzhou Key Laboratory of Materials for Energy Conversion and Storage
- Guangzhou 510006
- PR China
| | - Junmin Nan
- School of Chemistry and Environment
- South China Normal University
- Guangzhou Key Laboratory of Materials for Energy Conversion and Storage
- Guangzhou 510006
- PR China
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Abstract
AbstractTwenty three paper based packaging materials commercially used for food packaging in the Czech Republic were analysed with regard to 2-phenylphenol (OPP) content using HPLC technique with fluorimetric detection. The HPLC method was modified with the aim to increase its sensitivity. OPP was detected in quantities ranging from 10 mg kg−1 to 527 mg kg−1 in twenty tested samples. The level of OPP in packaging materials was in close correlation to the content of recycled pulp in used paper material. The migration of OPP from two packaging materials comprised of paperboard coated with low density polyethylene (LDPE) into food simulants was determined at 40°C for 10 days. The levels of migration into 3% acetic acid, 10% ethanol and olive oil were below the limit of detection of used analytical procedure. In the case of 95% ethanol, 13% and 21% of OPP present in tested samples were transferred into simulant. The found occurrence of OPP in paper packages does not pose any significant safety risk for food consumer, but OPP could be considered as wide spread contaminant in paper materials.
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50
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Classical nuclear hormone receptor activity as a mediator of complex concentration response relationships for endocrine active compounds. Curr Opin Pharmacol 2014; 19:112-9. [PMID: 25299165 DOI: 10.1016/j.coph.2014.09.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Revised: 09/08/2014] [Accepted: 09/16/2014] [Indexed: 02/07/2023]
Abstract
Nonmonotonic concentration response relationships are frequently observed for endocrine active ligands that act via nuclear receptors. The curve of best fit for nonmonotonic concentration response relationships are often inverted U-shaped with effects at intermediate concentrations that are different from effects at higher or lower concentrations. Cytotoxicity is a major mode of action responsible for inverted U-shaped concentration response relationships. However, evidence suggests that ligand selectivity, activation of multiple molecular targets, concerted regulation of multiple opposing endpoints, and multiple ligand binding sites within nuclear receptors also contribute to nonmonotonic concentration response relationships of endocrine active ligands. This review reports the current understanding of mechanisms involved in classical nuclear receptor mediated nonmonotonic concentration response relationships with a focus on studies published between 2012 and 2014.
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