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Valdes-Devesa V, Sanz-Rosa D, Thuissard-Vasallo IJ, Andreu-Vázquez C, Sainz de la Cuesta R. Xenoestrogen concentration in women with endometriosis or leiomyomas: A case-control study. PLoS One 2024; 19:e0304766. [PMID: 38833439 PMCID: PMC11149880 DOI: 10.1371/journal.pone.0304766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Accepted: 05/19/2024] [Indexed: 06/06/2024] Open
Abstract
BACKGROUND Xenoestrogens are synthetic or naturally occurring chemicals capable of altering the endocrine system of humans and animals owing to their molecular similarity to endogenous hormones. There is limited data regarding their effects on women´s health. Chronic exposure to xenoestrogens can promote the development of estrogen-related diseases. OBJECTIVES To examine xenoestrogen concentration (TEXB-α) differences between women with leiomyomas or endometriosis and control women, and to study the relationship between the clinical and sociodemographic characteristics of these patients and their xenoestrogen levels. METHODS Prospective case-control study. We selected 221 women who underwent surgery at Quironsalud Madrid University Hospital between 2017 and 2021. The cases included 117 patients: 74 women who underwent surgery for uterine leiomyomas, 21 with endometriosis, and 22 with both pathologies. The control group comprised 104 healthy women who underwent surgical procedures for other reasons. TEXB-α was determined in the omental fat of all patients. Using a questionnaire and reviewing the patients' medical records, we collected sociodemographic data and other relevant variables. RESULTS A significant majority of study participants (68.8%) had detectable levels of xenoestrogens. We found no association between TEXB-α levels in omental fat and the presence of myomas or endometriosis. In the case group, women living or working in Madrid Community exhibited, on average, 3.12 Eeq pM/g higher levels of TEXB-α compared to those working in other areas (p = 0.030). Women who referred to the use of estrogen-containing hormonal contraceptives had, on average, 3.02 Eeq pM/g higher levels of TEXB-α than those who had never used them (p = 0.022). CONCLUSIONS This study found no association between omental xenoestrogen levels and leiomyomas or endometriosis. However, their presence in most participants and their association with highly polluted areas emphasizes the importance of limiting environmental exposure to these substances. We also identified an association between hormonal contraceptive use and xenoestrogen concentration.
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Affiliation(s)
- Victoria Valdes-Devesa
- Department of Medicine, Faculty of Biomedical and Health Sciences, Universidad Europea de Madrid, Villaviciosa de Odon, Madrid, Spain
- Department of Obstetrics & Gynecology, Hospital Universitario Quironsalud Madrid, Pozuelo de Alarcon, Madrid, Spain
| | - David Sanz-Rosa
- Department of Medicine, Faculty of Biomedical and Health Sciences, Universidad Europea de Madrid, Villaviciosa de Odon, Madrid, Spain
| | - Israel J. Thuissard-Vasallo
- Department of Medicine, Faculty of Biomedical and Health Sciences, Universidad Europea de Madrid, Villaviciosa de Odon, Madrid, Spain
| | - Cristina Andreu-Vázquez
- Department of Medicine, Faculty of Biomedical and Health Sciences, Universidad Europea de Madrid, Villaviciosa de Odon, Madrid, Spain
| | - Ricardo Sainz de la Cuesta
- Department of Medicine, Faculty of Biomedical and Health Sciences, Universidad Europea de Madrid, Villaviciosa de Odon, Madrid, Spain
- Department of Obstetrics & Gynecology, Hospital Universitario Quironsalud Madrid, Pozuelo de Alarcon, Madrid, Spain
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Onat İ, Kocagöz R, Öz MD, Yeniay L, Tiftikçioğlu YÖ, Zekioğlu O, Serin G, Özdemir M, Gür E, Süzen HS, Orhan H. Blood and tissue levels of persistent organic pollutants and genetic susceptibility in patients with breast cancer. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2024; 108:104433. [PMID: 38583790 DOI: 10.1016/j.etap.2024.104433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 03/22/2024] [Accepted: 04/04/2024] [Indexed: 04/09/2024]
Abstract
We investigated possible associations between the internal concentrations of POPs and correlations between blood and tumor tissue concentrations in patients who underwent surgery for breast cancer and breast reduction as controls. Genetic variations in CYP1A1, GSTP1, GSTM1, and GSTT1 and hOGG1 were evaluated to determine whether they represent risk factors for breast cancer. Certain POPs have been found to be associated with breast cancer development. GST-P1 polymorphism represented a significant risk for breast cancer with unadjusted OR. However, the GSTT1 null polymorphism represented a significant risk for breast cancer when OR adjusted for age and smoking status. CYP1A1 polymorphism was a significant risk factor for breast cancer, regardless of whether the OR was adjusted. These results suggest that exposure to certain POPs, GSTT1 and CYP1A1 polymorphisms, age, and smoking status are risk factors for breast cancer. In addition, the blood concentrations of some POPs represent surrogates for breast tissue concentrations.
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Affiliation(s)
- İlgen Onat
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Ege University, Bornova-İzmir 35040, Turkey
| | - Rasih Kocagöz
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Ege University, Bornova-İzmir 35040, Turkey
| | - Merve Demirbügen Öz
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Ankara University, Tandoğan, Ankara 06350, Turkey
| | | | | | - Osman Zekioğlu
- Department of Medical Pathology, Faculty of Medicine, Ege University, Bornova-İzmir 35040, Turkey
| | - Gürdeniz Serin
- Department of Medical Pathology, Faculty of Medicine, Ege University, Bornova-İzmir 35040, Turkey
| | | | - Ersin Gür
- Department of Plastic and Reconstructive Surgery, Turkey
| | - Halit Sinan Süzen
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Ankara University, Tandoğan, Ankara 06350, Turkey
| | - Hilmi Orhan
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Ege University, Bornova-İzmir 35040, Turkey; İzmir Biomedicine and Genome Center (İBG-İzmir), Balcova-İzmir 35340, Turkey.
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Peralta M, Lizcano F. Endocrine Disruptors and Metabolic Changes: Impact on Puberty Control. Endocr Pract 2024; 30:384-397. [PMID: 38185329 DOI: 10.1016/j.eprac.2024.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 12/27/2023] [Accepted: 01/03/2024] [Indexed: 01/09/2024]
Abstract
OBJECTIVE This study aims to explore the significant impact of environmental chemicals on disease development, focusing on their role in developing metabolic and endocrine diseases. The objective is to understand how these chemicals contribute to the increasing prevalence of precocious puberty, considering various factors, including epigenetic changes, lifestyle, and emotional disturbances. METHODS The study employs a comprehensive review of descriptive observational studies in both human and animal models to identify a degree of causality between exposure to environmental chemicals and disease development, specifically focusing on endocrine disruption. Due to ethical constraints, direct causation studies in human subjects are not feasible; therefore, the research relies on accumulated observational data. RESULTS Puberty is a crucial life period with marked physiological and psychological changes. The age at which sexual characteristics develop is changing in many regions. The findings indicate a correlation between exposure to endocrine-disrupting chemicals and the early onset of puberty. These chemicals have been shown to interfere with normal hormonal processes, particularly during critical developmental stages such as adolescence. The research also highlights the interaction of these chemical exposures with other factors, including nutritional history, social and lifestyle changes, and emotional stress, which together contribute to the prevalence of precocious puberty. CONCLUSION Environmental chemicals significantly contribute to the development of certain metabolic and endocrine diseases, particularly in the rising incidence of precocious puberty. Although the evidence is mainly observational, it adequately justifies regulatory actions to reduce exposure risks. Furthermore, these findings highlight the urgent need for more research on the epigenetic effects of these chemicals and their wider impact on human health, especially during vital developmental periods.
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Affiliation(s)
- Marcela Peralta
- Center of Biomedical Investigation Universidad de La Sabana, CIBUS, Chía, Colombia
| | - Fernando Lizcano
- Center of Biomedical Investigation Universidad de La Sabana, CIBUS, Chía, Colombia; Department of Endocrinology, Diabetes and Nutrition, Fundación CardioInfantil-Instituto de Cardiología, Bogotá, Colombia.
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4
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Ye R, Li Z, Xian H, Zhong Y, Liang B, Huang Y, Chen D, Dai M, Tang S, Guo J, Bai R, Feng Y, Chen Z, Yang X, Huang Z. Combined Effects of Polystyrene Nanosphere and Homosolate Exposures on Estrogenic End Points in MCF-7 Cells and Zebrafish. ENVIRONMENTAL HEALTH PERSPECTIVES 2024; 132:27011. [PMID: 38381479 PMCID: PMC10880820 DOI: 10.1289/ehp13696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 01/05/2024] [Accepted: 01/08/2024] [Indexed: 02/22/2024]
Abstract
BACKGROUND Micro- and nanoplastics (MNPs) and homosalate (HMS) are ubiquitous emerging environmental contaminants detected in human samples. Despite the well-established endocrine-disrupting effects (EDEs) of HMS, the interaction between MNPs and HMS and its impact on HMS-induced EDEs remain unclear. OBJECTIVES This study aimed to investigate the influence of MNPs on HMS-induced estrogenic effects and elucidate the underlying mechanisms in vitro and in vivo. METHODS We assessed the impact of polystyrene nanospheres (PNSs; 50 nm , 1.0 mg / L ) on HMS-induced MCF-7 cell proliferation (HMS: 0.01 - 1 μ M , equivalent to 2.62 - 262 μ g / L ) using the E-SCREEN assay and explored potential mechanisms through transcriptomics. Adult zebrafish were exposed to HMS (0.0262 - 262 μ g / L ) with or without PNSs (50 nm , 1.0 mg / L ) for 21 d. EDEs were evaluated through gonadal histopathology, fertility tests, steroid hormone synthesis, and gene expression changes in the hypothalamus-pituitary-gonad-liver (HPGL) axis. RESULTS Coexposure of HMS and PNSs resulted in higher expression of estrogen receptor α (ESR1) and the mRNAs of target genes (pS2, AREG, and PGR), a greater estrogen-responsive element transactivation activity, and synergistic stimulation on MCF-7 cell proliferation. Knockdown of serum and glucocorticoid-regulated kinase 1 (SGK1) rescued the MCF-7 cell proliferation induced by PNSs alone or in combination with HMS. In zebrafish, coexposure showed higher expression of SGK1 and promoted ovary development but inhibited spermatogenesis. In addition, coexposure led to lower egg hatchability, higher embryonic mortality, and greater larval malformation. Coexposure also modulated steroid hormone synthesis genes (cyp17a2, hsd17[Formula: see text]1, esr2b, vtg1, and vtg2), and resulted in higher 17 β -estradiol (E 2 ) release in females. Conversely, males showed lower testosterone, E 2 , and gene expressions of cyp11a1, cyp11a2, cyp17a1, cyp17a2, and hsd17[Formula: see text]1. DISCUSSION PNS exposure exacerbated HMS-induced estrogenic effects via SGK1 up-regulation in MCF-7 cells and disrupting the HPGL axis in zebrafish, with gender-specific patterns. This offers new mechanistic insights and health implications of MNP and contaminant coexposure. https://doi.org/10.1289/EHP13696.
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Affiliation(s)
- Rongyi Ye
- National Medical Products Administration (NMPA) Key Laboratory for Safety Evaluation of Cosmetics, Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Toxicology, School of Public Health, Southern Medical University, Guangzhou, China
| | - Zhiming Li
- National Medical Products Administration (NMPA) Key Laboratory for Safety Evaluation of Cosmetics, Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Toxicology, School of Public Health, Southern Medical University, Guangzhou, China
| | - Hongyi Xian
- National Medical Products Administration (NMPA) Key Laboratory for Safety Evaluation of Cosmetics, Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Toxicology, School of Public Health, Southern Medical University, Guangzhou, China
| | - Yizhou Zhong
- National Medical Products Administration (NMPA) Key Laboratory for Safety Evaluation of Cosmetics, Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Toxicology, School of Public Health, Southern Medical University, Guangzhou, China
| | - Boxuan Liang
- National Medical Products Administration (NMPA) Key Laboratory for Safety Evaluation of Cosmetics, Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Toxicology, School of Public Health, Southern Medical University, Guangzhou, China
| | - Yuji Huang
- National Medical Products Administration (NMPA) Key Laboratory for Safety Evaluation of Cosmetics, Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Toxicology, School of Public Health, Southern Medical University, Guangzhou, China
| | - Da Chen
- College of Environment and Climate, Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou, China
| | | | - Shuqin Tang
- College of Environment and Climate, Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou, China
| | - Jie Guo
- Hunter Biotechnology, Inc, Hangzhou, China
| | - Ruobing Bai
- National Medical Products Administration (NMPA) Key Laboratory for Safety Evaluation of Cosmetics, Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Toxicology, School of Public Health, Southern Medical University, Guangzhou, China
| | - Yu Feng
- National Medical Products Administration (NMPA) Key Laboratory for Safety Evaluation of Cosmetics, Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Toxicology, School of Public Health, Southern Medical University, Guangzhou, China
| | - Zhenguo Chen
- Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Xingfen Yang
- NMPA Key Laboratory for Safety Evaluation of Cosmetics, Guangdong Provincial Key Laboratory of Tropical Disease Research, Food Safety and Health Research Center, School of Public Health, Southern Medical University, Guangzhou, China
| | - Zhenlie Huang
- National Medical Products Administration (NMPA) Key Laboratory for Safety Evaluation of Cosmetics, Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Toxicology, School of Public Health, Southern Medical University, Guangzhou, China
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Costas L, Frias-Gomez J, Peinado FM, Molina-Molina JM, Peremiquel-Trillas P, Paytubi S, Crous-Bou M, de Francisco J, Caño V, Benavente Y, Pelegrina B, Martínez JM, Pineda M, Brunet J, Matias-Guiu X, de Sanjosé S, Ponce J, Olea N, Alemany L, Fernández MF. Total Effective Xenoestrogen Burden in Serum Samples and Risk of Endometrial Cancer in the Spanish Screenwide Case-Control Study. ENVIRONMENTAL HEALTH PERSPECTIVES 2024; 132:27012. [PMID: 38415615 PMCID: PMC10901108 DOI: 10.1289/ehp13202] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 01/08/2024] [Accepted: 01/23/2024] [Indexed: 02/29/2024]
Abstract
BACKGROUND Endometrial cancer is a hormone-dependent cancer, and estrogens play a relevant role in its etiology. However, little is known about the effects of environmental pollutants that act as xenoestrogens or that influence estrogenic activity through different pathways. OBJECTIVE We aimed to assess the relationship between the combined estrogenic activity of mixtures of xenoestrogens present in serum samples and the risk of endometrial cancer in the Screenwide case-control study. METHODS The total effective xenoestrogen burden (TEXB) attributable to organohalogenated compounds (TEXB- α ) and to endogenous hormones and more polar xenoestrogens (TEXB- β ) was assessed in serum from 156 patients with endometrial cancer (cases) and 150 controls by combining chemical extraction and separation by high-performance liquid chromatography with the E-SCREEN bioassay for estrogenicity. RESULTS Median TEXB- α and TEXB- β levels for cases (0.30 and 1.25 Eeq pM / mL , respectively) and controls (0.42 and 1.28 Eeq pM / mL , respectively) did not significantly differ (p = 0.653 and 0.933, respectively). An inverted-U risk trend across serum TEXB- α and TEXB- β levels was observed in multivariate adjusted models: Positive associations were observed for the second category of exposure in comparison to the lowest category of exposure [odds ratio ( OR ) = 2.11 (95% CI: 1.13, 3.94) for TEXB- α , and OR = 3.32 (95% CI: 1.62, 6.81) for TEXB- β ], whereas no significant associations were observed between the third category of exposure and the first [OR = 1.22 (95% CI: 0.64, 2.31) for TEXB- α , and OR = 1.58 (95% CI: 0.75, 3.33) for TEXB- β ]. In mutually adjusted models for TEXB- α and TEXB- β levels, the association of TEXB- α with endometrial cancer risk was attenuated [OR = 1.45 (95% CI: 0.61, 3.47) for the second category of exposure], as well as estimates for TEXB- β (OR = 2.68 ; 95% CI: 1.03, 6.99). Most of the individual halogenated contaminants showed no associations with both TEXB and endometrial cancer. CONCLUSIONS We evaluated serum total xenoestrogen burden in relation to endometrial cancer risk and found an inverted-U risk trend across increasing categories of exposure. The use of in vitro bioassays with human samples may lead to a paradigm shift in the way we understand the negative impact of chemical mixtures on human health effects. These results are relevant from a public health perspective and for decision-makers in charge of controlling the production and distribution of chemicals with xenoestrogenic activity. https://doi.org/10.1289/EHP13202.
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Affiliation(s)
- Laura Costas
- Cancer Epidemiology Research Programme, Catalan Institute of Oncology, Hospitalet de Llobregat, Barcelona, Spain
- Bellvitge Biomedical Research Institute (IDIBELL), Hospitalet de Llobregat, Barcelona, Spain
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Jon Frias-Gomez
- Cancer Epidemiology Research Programme, Catalan Institute of Oncology, Hospitalet de Llobregat, Barcelona, Spain
- Bellvitge Biomedical Research Institute (IDIBELL), Hospitalet de Llobregat, Barcelona, Spain
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain
- University of Barcelona, Barcelona, Spain
| | - Francisco M. Peinado
- Centre of Biomedical Research, University of Granada, Granada, Spain
- Biosanitary Institute of Granada (ibs.GRANADA), Hospital Universitario San Cecilio, Granada, Spain
| | | | - Paula Peremiquel-Trillas
- Cancer Epidemiology Research Programme, Catalan Institute of Oncology, Hospitalet de Llobregat, Barcelona, Spain
- Bellvitge Biomedical Research Institute (IDIBELL), Hospitalet de Llobregat, Barcelona, Spain
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain
- University of Barcelona, Barcelona, Spain
| | - Sonia Paytubi
- Cancer Epidemiology Research Programme, Catalan Institute of Oncology, Hospitalet de Llobregat, Barcelona, Spain
- Bellvitge Biomedical Research Institute (IDIBELL), Hospitalet de Llobregat, Barcelona, Spain
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Marta Crous-Bou
- Cancer Epidemiology Research Programme, Catalan Institute of Oncology, Hospitalet de Llobregat, Barcelona, Spain
- Bellvitge Biomedical Research Institute (IDIBELL), Hospitalet de Llobregat, Barcelona, Spain
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Javier de Francisco
- Bellvitge Biomedical Research Institute (IDIBELL), Hospitalet de Llobregat, Barcelona, Spain
- Department of Anesthesiology, Hospital Universitari de Bellvitge, Barcelona, Spain
| | - Victor Caño
- Bellvitge Biomedical Research Institute (IDIBELL), Hospitalet de Llobregat, Barcelona, Spain
- Department of Anesthesiology, Hospital Universitari de Bellvitge, Barcelona, Spain
| | - Yolanda Benavente
- Cancer Epidemiology Research Programme, Catalan Institute of Oncology, Hospitalet de Llobregat, Barcelona, Spain
- Bellvitge Biomedical Research Institute (IDIBELL), Hospitalet de Llobregat, Barcelona, Spain
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Beatriz Pelegrina
- Cancer Epidemiology Research Programme, Catalan Institute of Oncology, Hospitalet de Llobregat, Barcelona, Spain
- Bellvitge Biomedical Research Institute (IDIBELL), Hospitalet de Llobregat, Barcelona, Spain
| | - José Manuel Martínez
- Bellvitge Biomedical Research Institute (IDIBELL), Hospitalet de Llobregat, Barcelona, Spain
- Department of Gynecology, Hospital Universitari de Bellvitge, Barcelona, Spain
| | - Marta Pineda
- Bellvitge Biomedical Research Institute (IDIBELL), Hospitalet de Llobregat, Barcelona, Spain
- Hereditary Cancer group, Molecular Mechanisms and Experimental Therapy in Oncology Program, Catalan Institute of Oncology, Hospitalet de Llobregat, Barcelona, Spain
- Consortium for Biomedical Research in Cancer (CIBERONC), Carlos III Institute of Health, Madrid, Spain
| | - Joan Brunet
- Bellvitge Biomedical Research Institute (IDIBELL), Hospitalet de Llobregat, Barcelona, Spain
- Hereditary Cancer group, Molecular Mechanisms and Experimental Therapy in Oncology Program, Catalan Institute of Oncology, Hospitalet de Llobregat, Barcelona, Spain
- Consortium for Biomedical Research in Cancer (CIBERONC), Carlos III Institute of Health, Madrid, Spain
| | - Xavier Matias-Guiu
- Bellvitge Biomedical Research Institute (IDIBELL), Hospitalet de Llobregat, Barcelona, Spain
- Consortium for Biomedical Research in Cancer (CIBERONC), Carlos III Institute of Health, Madrid, Spain
- Department of Pathology, Hospital Universitari de Bellvitge, Barcelona, Spain
| | - Silvia de Sanjosé
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain
- Barcelona Institute for Global Health, Barcelona, Spain
| | - Jordi Ponce
- Bellvitge Biomedical Research Institute (IDIBELL), Hospitalet de Llobregat, Barcelona, Spain
- Department of Gynecology, Hospital Universitari de Bellvitge, Barcelona, Spain
| | - Nicolás Olea
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain
- Centre of Biomedical Research, University of Granada, Granada, Spain
- Biosanitary Institute of Granada (ibs.GRANADA), Hospital Universitario San Cecilio, Granada, Spain
| | - Laia Alemany
- Cancer Epidemiology Research Programme, Catalan Institute of Oncology, Hospitalet de Llobregat, Barcelona, Spain
- Bellvitge Biomedical Research Institute (IDIBELL), Hospitalet de Llobregat, Barcelona, Spain
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Mariana F. Fernández
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain
- Centre of Biomedical Research, University of Granada, Granada, Spain
- Biosanitary Institute of Granada (ibs.GRANADA), Hospital Universitario San Cecilio, Granada, Spain
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Xie Y, Zhang Q, Chen L, Li F, Li M, Guo LH. Emerging organophosphate ester resorcinol bis(diphenyl phosphate) exerts estrogenic effects via estrogen receptor pathways. Toxicology 2023; 499:153649. [PMID: 37827210 DOI: 10.1016/j.tox.2023.153649] [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: 07/22/2023] [Revised: 10/01/2023] [Accepted: 10/10/2023] [Indexed: 10/14/2023]
Abstract
Environmental occurrence and human exposure of emerging organophosphate esters (eOPEs) have increased significantly in recent years. Resorcinol bis(diphenyl) phosphate (RDP) is one of the major eOPEs detected in indoor dust, but the knowledge on its toxicities and health risks is rather limited. In this study, we investigated the in vitro estrogenic effects and underlying mechanism of RDP in comparison with a legacy OPE triphenyl phosphate (TPHP). Our results showed that RDP promoted MCF-7 cell proliferation with the lowest effect concentration of 2.5 μM, and the maximum enhancement of 1.6 folds is greater than that of TPHP (1.3 folds). The effect was inhibited completely by an estrogen receptor (ER) antagonist, suggesting that ER activation was responsible for the enhancement. In luciferase reporter gene assays both RDP and TPHP activated ER transcriptional activity at 2.5 μM, but RDP activity was higher than TPHP. Competitive fluorescence binding assays showed that RDP bound to ER with an IC10 of 0.26 μM, which is 20 folds lower than TPHP (5.6 μM). Molecular docking simulation revealed that both RDP and TPHP interacted with ER at the binding pocket of estradiol, although the hydrogen bonds were different. Taken together, RDP exerted stronger estrogenic effects than TPHP through ER-mediated pathways and may pose more health risks.
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Affiliation(s)
- Yue Xie
- College of Life Sciences, China Jiliang University, 258 Xueyuan Street, Hangzhou, Zhejiang 310018, China; Institute of Environmental and Health Sciences, China Jiliang University, 168 Xueyuan Street, Hangzhou, Zhejiang 310018, China
| | - Qi Zhang
- Institute of Environmental and Health Sciences, China Jiliang University, 168 Xueyuan Street, Hangzhou, Zhejiang 310018, China; College of Quality and Safety Engineering, China Jiliang University, 258 Xueyuan Street, Hangzhou, Zhejiang 310018, China
| | - Lu Chen
- College of Life Sciences, China Jiliang University, 258 Xueyuan Street, Hangzhou, Zhejiang 310018, China; Institute of Environmental and Health Sciences, China Jiliang University, 168 Xueyuan Street, Hangzhou, Zhejiang 310018, China
| | - Fangfang Li
- Institute of Environmental and Health Sciences, China Jiliang University, 168 Xueyuan Street, Hangzhou, Zhejiang 310018, China; College of Quality and Safety Engineering, China Jiliang University, 258 Xueyuan Street, Hangzhou, Zhejiang 310018, China
| | - Minjie Li
- Institute of Environmental and Health Sciences, China Jiliang University, 168 Xueyuan Street, Hangzhou, Zhejiang 310018, China; College of Quality and Safety Engineering, China Jiliang University, 258 Xueyuan Street, Hangzhou, Zhejiang 310018, China.
| | - Liang-Hong Guo
- Institute of Environmental and Health Sciences, China Jiliang University, 168 Xueyuan Street, Hangzhou, Zhejiang 310018, China; College of Quality and Safety Engineering, China Jiliang University, 258 Xueyuan Street, Hangzhou, Zhejiang 310018, China.
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7
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Reale E, Hopf NB, Breider F, Grandjean D, Pirard C, Charlier C, Koch HM, Berthet A, Suarez G, Borgatta M. Repeated Human Exposure to Semivolatile Organic Compounds by Inhalation: Novel Protocol for a Nonrandomized Study. JMIR Res Protoc 2023; 12:e51020. [PMID: 37831504 PMCID: PMC10612011 DOI: 10.2196/51020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 07/26/2023] [Indexed: 10/14/2023] Open
Abstract
BACKGROUND Semivolatile organic compounds (SVOCs) comprise several different chemical families used mainly as additives in many everyday products. SVOCs can be released into the air as aerosols and deposit on particulate matter during use by dispersion, evaporation, or abrasion. Phthalates are SVOCs of growing concern due to their endocrine-disrupting effects. Human data on the absorption, distribution, metabolism, and excretion (ADME) of these compounds upon inhalation are almost nonexistent. OBJECTIVE The goal of this study is to develop a method for repeated inhalation exposures to SVOCs to characterize their ADME in humans. METHODS We will use diethylhexyl phthalate (DEHP), a major indoor air pollutant, as a model SVOC in this novel protocol. The Swiss official Commission on Ethics in Human Research, Canton de Vaud, approved the study on October 14, 2020 (project-ID 2020-01095). Participants (n=10) will be repeatedly exposed (2 short daily exposures over 4 days) to isotope-labeled DEHP (DEHP-d4) to distinguish administered exposures from background exposures. DEHP-d4 aerosols will be generated with a small, portable, aerosol-generating device. Participants will inhale DEHP-d4-containing aerosols themselves with this device at home. Air concentrations of the airborne phthalates will be less than or equal to their occupational exposure limit (OEL). DEHP-d4 and its metabolites will be quantified in urine and blood before, during, and after exposure. RESULTS Our developed device can generate DEHP-d4 aerosols with diameters of 2.5 μm or smaller and a mean DEHP-d4 mass of 1.4 (SD 0.2) μg per puff (n=6). As of May 2023, we have enrolled 5 participants. CONCLUSIONS The portable device can be used to generate phthalate aerosols for repeated exposure in human studies. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID) DERR1-10.2196/51020.
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Affiliation(s)
- Elena Reale
- Department of Occupational Health, Center for Primary Care and Public Health (Unisanté), University of Lausanne, Lausanne, Switzerland
| | - Nancy B Hopf
- Department of Occupational Health, Center for Primary Care and Public Health (Unisanté), University of Lausanne, Lausanne, Switzerland
- Swiss Centre for Applied Human Toxicology, Basel, Switzerland
| | - Florian Breider
- Central Environmental Laboratory, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Dominique Grandjean
- Central Environmental Laboratory, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Catherine Pirard
- Center for Interdisciplinary Research on Medicines, University of Liege, Liege, Belgium
- Laboratory of Clinical, Forensic and Environmental Toxicology, University Hospital of Liege, Liege, Belgium
| | - Corinne Charlier
- Center for Interdisciplinary Research on Medicines, University of Liege, Liege, Belgium
- Laboratory of Clinical, Forensic and Environmental Toxicology, University Hospital of Liege, Liege, Belgium
| | - Holger M Koch
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-University Bochum, Bochum, Germany
| | - Aurélie Berthet
- Department of Occupational Health, Center for Primary Care and Public Health (Unisanté), University of Lausanne, Lausanne, Switzerland
| | - Guillaume Suarez
- Department of Occupational Health, Center for Primary Care and Public Health (Unisanté), University of Lausanne, Lausanne, Switzerland
| | - Myriam Borgatta
- Department of Occupational Health, Center for Primary Care and Public Health (Unisanté), University of Lausanne, Lausanne, Switzerland
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8
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Zhang XJ, Diao MN, Zhang YF. A review of the occurrence, metabolites and health risks of butylated hydroxyanisole (BHA). JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:6150-6166. [PMID: 37127924 DOI: 10.1002/jsfa.12676] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 04/19/2023] [Accepted: 05/02/2023] [Indexed: 05/03/2023]
Abstract
Butylated hydroxyanisole (BHA) is mainly used as a food additive due to its antioxidant properties, which prevent or delay oxidation reactions and extend the storage life of products. The widespread use of BHA has led to its extensive presence in various environmental matrices and human tissues. Food intake is the main route of human exposure to BHA. Under different conditions, BHA can produce different metabolites, with tert-butyl hydroquinone (TBHQ) being one of the major products. Several studies have shown that BHA could cause thyroid system damage, metabolic and growth disorders, neurotoxicity, and carcinogenesis. Mechanisms such as endocrine disruption, genotoxicity, disturbances of energy metabolism, reactive oxygen species (ROS) production, signaling pathways, and imbalances in calcium homeostasis appear to be associated with the toxic effects of BHA. Avoiding the toxic effects of BHA to the maximum extent possible is a top priority. Finding safe, non-toxic and environmentally friendly alternatives to BHA should be the focus of subsequent research. In all, this review summarized the current situation related to BHA and might make recommendations for future research directions. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Xiao-Jing Zhang
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, China
| | - Mei-Ning Diao
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, China
| | - Yin-Feng Zhang
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, China
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9
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van Tongeren TCA, Wang S, Carmichael PL, Rietjens IMCM, Li H. Next generation risk assessment of human exposure to estrogens using safe comparator compound values based on in vitro bioactivity assays. Arch Toxicol 2023; 97:1547-1575. [PMID: 37087486 PMCID: PMC10182946 DOI: 10.1007/s00204-023-03480-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 03/02/2023] [Indexed: 04/24/2023]
Abstract
In next generation risk assessment (NGRA), the Dietary Comparator Ratio (DCR) can be used to assess the safety of chemical exposures to humans in a 3R compliant approach. The DCR compares the Exposure Activity Ratio (EAR) for exposure to a compound of interest (EARtest) to the EAR for an established safe exposure level to a comparator compound (EARcomparator), acting by the same mode of action. It can be concluded that the exposure to a test compound is safe at a corresponding DCR ≤ 1. In this study, genistein (GEN) was selected as a comparator compound by comparison of reported safe internal exposures to GEN to its BMCL05, as no effect level, the latter determined in the in vitro estrogenic MCF7/Bos proliferation, T47D ER-CALUX, and U2OS ERα-CALUX assay. The EARcomparator was defined using the BMCL05 and EC50 values from the 3 in vitro assays and subsequently used to calculate the DCRs for exposures to 14 test compounds, predicting the (absence of) estrogenicity. The predictions were evaluated by comparison to reported in vivo estrogenicity in humans for these exposures. The results obtained support in the DCR approach as an important animal-free new approach methodology (NAM) in NGRA and show how in vitro assays can be used to define DCR values.
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Affiliation(s)
- Tessa C A van Tongeren
- Division of Toxicology, Wageningen University and Research, 6700 EA, Wageningen, The Netherlands.
| | - Si Wang
- Division of Toxicology, Wageningen University and Research, 6700 EA, Wageningen, The Netherlands
| | - Paul L Carmichael
- Unilever Safety and Environmental Assurance Centre, Sharnbrook, Bedfordshire, MK44 1LQ, UK
| | - Ivonne M C M Rietjens
- Division of Toxicology, Wageningen University and Research, 6700 EA, Wageningen, The Netherlands
| | - Hequn Li
- Unilever Safety and Environmental Assurance Centre, Sharnbrook, Bedfordshire, MK44 1LQ, UK
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10
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De la Parra-Guerra AC, Acevedo-Barrios R. Studies of Endocrine Disruptors: Nonylphenol and Isomers in Biological Models. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2023. [PMID: 37057841 DOI: 10.1002/etc.5633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 04/10/2023] [Accepted: 04/12/2023] [Indexed: 05/23/2023]
Abstract
Certain emerging pollutants are among the most widely used chemicals globally, causing widespread concern in relation to their use in products devoted to cleaniness and asepsis. Nonylphenol ethoxylate (NPEOn) is one such contaminant, along with its degradation product, nonylphenol, an active ingredient presents in nonionic surfactants used as herbicides, cosmetics, paints, plastics, disinfectants, and detergents. These chemicals and their metabolites are commonly found in environmental matrices. Nonylphenol and NPEOn, used, are particularly concerning, given their role as endocrine disruptors chemical and possible neurotoxic effects recorded in several biological models, primarily aquatic organisms. Limiting and detecting these compounds remain of paramount importance. The objective of the present review was to evaluate the toxic effects of nonylphenol and NPEOn in different biological models. Environ Toxicol Chem 2023;00:1-12. © 2023 SETAC.
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Affiliation(s)
- Ana C De la Parra-Guerra
- Department of Natural and Exact Sciences, Universidad de La Costa, Barranquilla, Colombia
- Biodiversity Research Group, Faculty of Basic Sciences, Universidad del Atlántico, Barranquilla, Colombia
| | - Rosa Acevedo-Barrios
- Grupo de Investigación en Estudios Químicos y Biológicos, Facultad de Ciencias Básicas, Universidad Tecnológica de Bolívar, Cartagena, Colombia
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11
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Estrogenic flavonoids and their molecular mechanisms of action. J Nutr Biochem 2023; 114:109250. [PMID: 36509337 DOI: 10.1016/j.jnutbio.2022.109250] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 12/02/2022] [Accepted: 12/07/2022] [Indexed: 12/13/2022]
Abstract
Flavonoids are a major group of phytoestrogens associated with physiological effects, and ecological and social impacts. Although the estrogenic activity of flavonoids was reported by researchers in the fields of medical, environmental and food studies, their molecular mechanisms of action have not been comprehensively reviewed. The estrogenic activity of the respective classes of flavonoids, anthocyanidins/anthocyanins, 2-arylbenzofurans/3-arylcoumarins/α-methyldeoxybenzoins, aurones/chalcones/dihydrochalcones, coumaronochromones, coumestans, flavans/flavan-3-ols/flavan-4-ols, flavanones/dihydroflavonols, flavones/flavonols, homoisoflavonoids, isoflavans, isoflavanones, isoflavenes, isoflavones, neoflavonoids, oligoflavonoids, pterocarpans/pterocarpenes, and rotenone/rotenoids, was summarized through a comprehensive literature search, and their structure-activity relationship, biological activities, signaling pathways, and applications were discussed. Although the respective classes of flavonoids contained at least one chemical mimicking estrogen, the mechanisms varied, such as those with estrogenic, anti-estrogenic, non-estrogenic, and biphasic activities, and additional activities through crosstalk/bypassing, which exert biological activities through cell signaling pathways. Such mechanistic variations of estrogen action are not limited to flavonoids and are observed among other broad categories of chemicals, thus this group of chemicals can be termed as the "estrogenome". This review article focuses on the connection of estrogen action mainly between the outer and the inner environments, which represent variations of chemicals and biological activities/signaling pathways, respectively, and form the basis to understand their applications. The applications of chemicals will markedly progress due to emerging technologies, such as artificial intelligence for precision medicine, which is also true of the study of the estrogenome including estrogenic flavonoids.
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12
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Olayoku FR, Verhoog NJD, Louw A. Cyclopia extracts act as selective estrogen receptor subtype downregulators in estrogen receptor positive breast cancer cell lines: Comparison to standard of care breast cancer endocrine therapies and a selective estrogen receptor agonist and antagonist. Front Pharmacol 2023; 14:1122031. [PMID: 36992834 PMCID: PMC10040842 DOI: 10.3389/fphar.2023.1122031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 02/28/2023] [Indexed: 03/14/2023] Open
Abstract
Breast cancer is the most diagnosed type of cancer amongst women in economically developing countries and globally. Most breast cancers express estrogen receptor alpha (ERα) and are categorized as positive (ER+) breast cancer. Endocrine therapies such as, selective estrogen receptor modulators (SERMs), aromatase inhibitors (AIs), and selective estrogen receptor downregulators (SERDs) are used to treat ER+ breast cancer. However, despite their effectiveness, severe side-effects and resistance are associated with these endocrine therapies. Thus, it would be highly beneficial to develop breast cancer drugs that are as effective as current therapies, but less toxic with fewer side effects, and less likely to induce resistance. Extracts of Cyclopia species, an indigenous South African fynbos plant, have been shown to possess phenolic compounds that exhibit phytoestrogenic and chemopreventive activities against breast cancer development and progression. In the current study, three well characterized Cyclopia extracts, SM6Met, cup of tea (CoT) and P104, were examined for their abilities to modulate the levels of the estrogen receptor subtypes, estrogen receptor alpha and estrogen receptor beta (ERβ), which have been recognized as crucial to breast cancer prognosis and treatment. We showed that the Cyclopia subternata Vogel (C. subternata Vogel) extracts, SM6Met and cup of tea, but not the C. genistoides extract, P104, reduced estrogen receptor alpha protein levels while elevating estrogen receptor beta protein levels, thereby reducing the ERα:ERβ ratio in a similar manner as standard of care breast cancer endocrine therapies such as fulvestrant (selective estrogen receptor downregulator) and 4-hydroxytamoxifen (elective estrogen receptor modulator). Estrogen receptor alpha expression enhances the proliferation of breast cancer cells while estrogen receptor beta inhibits the proliferative activities of estrogen receptor alpha. We also showed that in terms of the molecular mechanisms involved all the Cyclopia extracts regulated estrogen receptor alpha and estrogen receptor beta protein levels through both transcriptional and translational, and proteasomal degradation mechanisms. Therefore, from our findings, we proffer that the C. subternata Vogel extracts, SM6Met and cup of tea, but not the C. genistoides extract, P104, selectively modulate estrogen receptor subtypes levels in a manner that generally supports inhibition of breast cancer proliferation, thereby demonstrating attributes that could be explored as potential therapeutic agents for breast cancer.
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13
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Dutta S, Banu SK, Arosh JA. Endocrine disruptors and endometriosis. Reprod Toxicol 2023; 115:56-73. [PMID: 36436816 DOI: 10.1016/j.reprotox.2022.11.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 11/21/2022] [Accepted: 11/22/2022] [Indexed: 11/27/2022]
Abstract
Endometriosis is a hormone-dependent inflammatory gynecological disease of reproductive-age women. It is clinically and pathologically characterized by the presence of functional endometrium as heterogeneous lesions outside the uterine cavity. The two major symptoms are chronic pelvic pain and infertility, which profoundly affect women's reproductive health and quality of life. This significant individual and public health concerns underscore the importance of understanding the pathogenesis of endometriosis. The environmental endocrine-disrupting chemicals (EDCs) are exogenous agents that interfere with the synthesis, secretion, transport, signaling, or metabolism of hormones responsible for homeostasis, reproduction, and developmental processes. Endometriosis has been potentially linked to exposure to EDCs. In this review, based on the robust literature search, we have selected four endocrine disruptors (i) polychlorinated biphenyls (PCB)s (ii) dioxins (TCDD) (iii) bisphenol A (BPA) and its analogs and (iv) phthalates to elucidate their critical role in the etiopathogenesis of endometriosis. The epidemiological and experimental data discussed in this review indicate that these four EDCs activate multiple intracellular signaling pathways associated with proinflammation, estrogen, progesterone, prostaglandins, cell survival, apoptosis, migration, invasion, and growth of endometriosis. The available information strongly indicates that environmental exposure to EDCs such as PCBs, dioxins, BPA, and phthalates individually or collectively contribute to the pathophysiology of endometriosis. Further understanding of the molecular mechanisms of how these EDCs establish endometriosis and therapeutic strategies to mitigate the effects of these EDCs in the pathogenesis of endometriosis are timely needed. Moreover, understanding the interactive roles of these EDCs in the pathogenesis of endometriosis will help regulate the exposure to these EDCs in reproductive age women.
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Affiliation(s)
- Sudipta Dutta
- Reproductive Endocrinology and Cell Signaling Laboratory, Department of Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, 77843 College Station, TX, USA
| | - Sakhila K Banu
- Reproductive Endocrinology and Cell Signaling Laboratory, Department of Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, 77843 College Station, TX, USA.
| | - Joe A Arosh
- Reproductive Endocrinology and Cell Signaling Laboratory, Department of Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, 77843 College Station, TX, USA.
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14
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Nguyen QN, Lee SR, Kim B, Hong JH, Jang YS, Lee DE, Pang C, Kang KS, Kim KH. Estrogenic Activity of 4-Hydroxy-Benzoic Acid from Acer tegmentosum via Estrogen Receptor α-Dependent Signaling Pathways. PLANTS (BASEL, SWITZERLAND) 2022; 11:3387. [PMID: 36501426 PMCID: PMC9740217 DOI: 10.3390/plants11233387] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/25/2022] [Accepted: 12/02/2022] [Indexed: 06/17/2023]
Abstract
Acer tegmentosum, a deciduous tree belonging to Aceraceae, has been used in traditional oriental medicine for treating hepatic disorders, such as hepatitis, cirrhosis, and liver cancer. We evaluated the estrogen-like effects of A. tegmentosum using an estrogen receptor (ER)-positive breast cancer cell line, namely MCF-7, to identify potential phytoestrogens and found that an aqueous extract of A. tegmentosum promoted cell proliferation in MCF-7 cells. Five phenolic compounds (1-5) were separated and identified from the active fraction using bioassay-guided fractionation of crude A. tegmentosum extract and phytochemical analysis. The chemical structures of the compounds were characterized as vanillic acid (1), 4-hydroxy-benzoic acid (2), syringic acid (3), isoscopoletin (4), and (E)-ferulic acid (5) based on the analysis of their nuclear magnetic resonance spectra and liquid chromatography-mass spectrometry data. All five compounds were evaluated using an E-screen assay for their estrogen-like effects on MCF-7 cells. Among the tested compounds, only 4-hydroxy-benzoic acid (2) promoted the proliferation of MCF-7 cells, which was mitigated by the ER antagonist, ICI 182,780. The mechanism underlying the estrogen-like effect of 4-hydroxy-benzoic acid (2) was evaluated via western blotting analysis to determine the expression levels of extracellular signal-regulated kinase (ERK), phosphoinositide 3-kinase (PI3K), serine/threonine kinase (AKT), and ERα. Our results demonstrated that 4-hydroxy-benzoic acid (2) induced the increase in the protein expression levels of p-ERK, p-AKT, p-PI3K, and p-Erα, concentration dependently. Collectively, these experimental results suggest that 4-hydroxy-benzoic acid (2) is responsible for the estrogen-like effects of A. tegmentosum and may potentially aid in the control of estrogenic effects during menopause.
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Affiliation(s)
- Quynh Nhu Nguyen
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea
| | - Seoung Rak Lee
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Baolo Kim
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea
| | - Joo-Hyun Hong
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Yoon Seo Jang
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Da Eun Lee
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Changhyun Pang
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
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15
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Benoit L, Koual M, Tomkiewicz C, Bats AS, Antignac JP, Coumoul X, Barouki R, Cano-Sancho G. Impact of mixtures of persistent organic pollutants on breast cancer aggressiveness. ENVIRONMENT INTERNATIONAL 2022; 170:107615. [PMID: 36343552 DOI: 10.1016/j.envint.2022.107615] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 09/27/2022] [Accepted: 11/02/2022] [Indexed: 06/16/2023]
Abstract
INTRODUCTION Breast cancer (BC) is frequent with a poor prognosis in case of metastasis. The role of the environment has been poorly evaluated in its progression. We searched to assess whether a mixture of pollutants could be responsible of BC aggressiveness. METHODS Patients undergoing surgery for their BC were prospectively included in the METAPOP cohort. Forty-two POPs were extracted, among them 17 dioxins (PCDD/F), 16 polychlorobiphenyls (PCB), 8 polybromodiphenylethers (PBDE) and 2,2',4,4',5,5'-hexabromobiphenyl (PBB153) were measured in the adipose tissue surrounding the tumor. BC aggressiveness was defined using tumor size and metastasis (distant or lymph nodes). Two complementary models were used to evaluate the impact of the mixture of pollutants: the BKMR (Bayesian Kernel machine regression) and WQS (weighted quantile sum regression) models. The WQS estimates the weight (positive or negative) of a certain chemical based on its quantile and the BKMR model applies a kernel-based approach to estimate posterior inclusion probabilities. The sub-group of patients with a body mass index (BMI) > 22 kg/ m2 was also analyzed. RESULTS Ninety-one patients were included. Of these, 38 patients presented a metastasis, and the mean tumor size was 25.4 mm. The mean BMI was 24.5 kg/m2 (+/- 4.1). No statistical association was found in the general population. However, in patients with a BMI > 22 kg/ m2, our mixture was positively associated with tumor size (OR: 9.73 95 %CI: 1.30-18.15) and metastasis (OR = 3.98 95 %CI = 1.09-17.53) using the WQS model. Moreover, using the BKMR model on chemical families, dioxin like chemicals and PCDD were associated with a higher risk of metastasis. DISCUSSION These novel findings identified a mixture associated with breast cancer aggressiveness in patients with a BMI > 22 kg/ m2.
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Affiliation(s)
- Louise Benoit
- INSERM UMR-S 1124, T3S, Toxicologie Environnementale, Cibles thérapeutiques, Signalisation cellulaire et Biomarqueurs, France; Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges-Pompidou, Service de Chirurgie Cancérologique Gynécologique et du Sein, Paris, France; Université Paris Cité, 45 rue des Saints-Pères, 75006 Paris, France.
| | - Meriem Koual
- INSERM UMR-S 1124, T3S, Toxicologie Environnementale, Cibles thérapeutiques, Signalisation cellulaire et Biomarqueurs, France; Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges-Pompidou, Service de Chirurgie Cancérologique Gynécologique et du Sein, Paris, France; Université Paris Cité, 45 rue des Saints-Pères, 75006 Paris, France
| | - Céline Tomkiewicz
- INSERM UMR-S 1124, T3S, Toxicologie Environnementale, Cibles thérapeutiques, Signalisation cellulaire et Biomarqueurs, France
| | - Anne-Sophie Bats
- Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges-Pompidou, Service de Chirurgie Cancérologique Gynécologique et du Sein, Paris, France; Université Paris Cité, 45 rue des Saints-Pères, 75006 Paris, France; INSERM UMR-S 1147, Université Paris Cité, Centre de Recherche des Cordeliers, Paris, France
| | | | - Xavier Coumoul
- INSERM UMR-S 1124, T3S, Toxicologie Environnementale, Cibles thérapeutiques, Signalisation cellulaire et Biomarqueurs, France; Université Paris Cité, 45 rue des Saints-Pères, 75006 Paris, France
| | - Robert Barouki
- INSERM UMR-S 1124, T3S, Toxicologie Environnementale, Cibles thérapeutiques, Signalisation cellulaire et Biomarqueurs, France; Université Paris Cité, 45 rue des Saints-Pères, 75006 Paris, France
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16
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An S, Rauch SA, Maphula A, Obida M, Kogut K, Bornman R, Chevrier J, Eskenazi B. In-utero exposure to DDT and pyrethroids and child behavioral and emotional problems at 2 years of age in the VHEMBE cohort, South Africa. CHEMOSPHERE 2022; 306:135569. [PMID: 35798156 PMCID: PMC9520228 DOI: 10.1016/j.chemosphere.2022.135569] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 06/27/2022] [Accepted: 06/28/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Half the world's population is at risk for malaria. Indoor residual spraying (IRS) with insecticides has been effective in controlling malaria, yet the potential neurotoxicity of these insecticides is of concern, particularly for infants exposed in utero. OBJECTIVES To determine the association of prenatal exposure to DDT/DDE and pyrethroid insecticides and behavioral/emotional problems in two-year-old children. METHODS The Venda Health Examination of Mothers, Babies and their Environment (VHEMBE) birth cohort in South Africa, measured concentrations of p,p'-DDT and p,p'-DDE in maternal serum and pyrethroid metabolites (cis-DBCA, cis-DCCA, trans-DCCA, and 3-PBA) in maternal urine collected during pregnancy. At 2 years, 683 mothers were interviewed about their children's behavior and emotional development, using the Child Behavior Checklist (CBCL). We examined associations between behavioral or emotional problems and biomarkers of prenatal insecticide exposure. RESULTS Maternal serum p,p'-DDT concentrations were associated with heightened withdrawn behavior in 2-year olds, with a 0.24 increase in raw scores (95%CI = 0.00, 0.49) and a 12% increase (95%CI = 1.01, 1.23) in risk of being at or above the borderline-clinical level, per 10-fold increase in concentrations. Ten-fold increases in p,p'-DDT and p,p'-DDE were related to 30% (RR = 1.30; 95%CI = 1.01, 1.67) and 39% (RR = 1.39; 95%CI =1.01, 1.91) higher risks, respectively, for increased oppositional-defiant behavior. p,p'-DDE concentrations were also related to increased risk of ADHD-related problems (RR = 1.30; 95%CI = 0.98, 1.72). Maternal urinary concentrations of cis-DBCA and 3-PBA were associated with increased risk of externalizing behaviors (RR = 1.30; 95%CI = 1.05, 1.62; RR = 1.35, 95%CI = 1.03, 1.78 per 10-fold increase, respectively), with some evidence of an association between cis-DBCA and affective disorders (RR = 1.25; 95%CI = 0.99, 1.56). Some associations with maternal pyrethroid concentrations were stronger in girls than boys. CONCLUSIONS Prenatal exposure to DDT and pyrethroid insecticides may be associated with maternally-reported behavioral problems in two-year-old children. Given their long history and continued use, further investigation is warranted.
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Affiliation(s)
- Sookee An
- Center for Environmental Research and Community Health (CERCH), School of Public Health, University of California at Berkeley, Berkeley, CA, USA
| | - Stephen A Rauch
- Center for Environmental Research and Community Health (CERCH), School of Public Health, University of California at Berkeley, Berkeley, CA, USA
| | - Angelina Maphula
- University of Pretoria Institute for Sustainable Malaria Control and School of Health Systems and Public Health, University of Pretoria, Pretoria, South Africa; Department of Psychology, University of Venda, Limpopo, South Africa
| | - Muvhulawa Obida
- University of Pretoria Institute for Sustainable Malaria Control and School of Health Systems and Public Health, University of Pretoria, Pretoria, South Africa
| | - Katherine Kogut
- Center for Environmental Research and Community Health (CERCH), School of Public Health, University of California at Berkeley, Berkeley, CA, USA
| | - Riana Bornman
- University of Pretoria Institute for Sustainable Malaria Control and School of Health Systems and Public Health, University of Pretoria, Pretoria, South Africa
| | - Jonathan Chevrier
- Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montréal, QC, Canada
| | - Brenda Eskenazi
- Center for Environmental Research and Community Health (CERCH), School of Public Health, University of California at Berkeley, Berkeley, CA, USA.
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17
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Omeljaniuk WJ, Charkiewicz AE, Garley M, Ratajczak-Wrona W, Czerniecki J, Jabłońska E, Cechowska-Pasko M, Miltyk W. Bisphenol A: Potential Factor of Miscarriage in Women in the Context of the Phenomenon of Neutrophil Extracellular Traps. Arch Immunol Ther Exp (Warsz) 2022; 70:24. [PMID: 36181646 PMCID: PMC9526682 DOI: 10.1007/s00005-022-00661-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 09/08/2022] [Indexed: 11/05/2022]
Abstract
Humans are exposed to a number of environmental pollutants every day. Among them, endocrine disruptors are particularly harmful to human health. Bisphenol A (BPA) is a xenoestrogen that has been shown to disrupt the endocrine system and cause reproductive toxicity. In this study, we aimed to verify the potential relationship between BPA and miscarriage involving the formation of neutrophil extracellular traps (NETs). Blood samples were collected from healthy women and women who had miscarriage in the first trimester of pregnancy. The serum levels of cytoplasmic anti-PR3 antibody and perinuclear anti-MPO antibody were determined using an immunoenzymatic method. The concentrations of key proinflammatory proteins TNF-α and MCP-1, as well as NADPH oxidase subunits NOX1 and NCF2, were also measured in the serum samples. The serum concentration of BPA was determined using gas chromatography. The results showed that the concentrations of BPA were significantly elevated in the serum of women who had miscarriage compared to the control group, with the highest concentration found in the “NETs-positive” group. The levels of MCP-1 and TNF-α were significantly higher in the “NETs-positive” group compared to the “NETs-negative” and control group. The levels of NOX1 and NCF2 were also higher in the “NETs-positive” group compared to the “NETs-negative” group. The study showed that BPA could play a role in the course of miscarriage through the formation of NETs. The results indicate the need to limit the exposure of women planning pregnancy to xenoestrogens, including BPA.
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Affiliation(s)
- Wioleta Justyna Omeljaniuk
- Department of Analysis and Bioanalysis of Medicines, Medical University of Bialystok, Bialystok, Poland.
| | | | - Marzena Garley
- Department of Immunology, Medical University of Bialystok, Bialystok, Poland
| | | | - Jan Czerniecki
- Biology and Pathology of Human Reproduction, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences in Olsztyn, Olsztyn, Poland
| | - Ewa Jabłońska
- Department of Immunology, Medical University of Bialystok, Bialystok, Poland
| | | | - Wojciech Miltyk
- Department of Analysis and Bioanalysis of Medicines, Medical University of Bialystok, Bialystok, Poland
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Jang D, Lee E, Lee S, Kwon Y, Kang KS, Kim CE, Kim D. System-level investigation of anti-obesity effects and the potential pathways of Cordyceps militaris in ovariectomized rats. BMC Complement Med Ther 2022; 22:132. [PMID: 35550138 PMCID: PMC9102749 DOI: 10.1186/s12906-022-03608-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 04/21/2022] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Cordyceps species have been used as tonics to enhance energy, stamina, and libido in traditional Asian medicine for more than 1600 years, indicating their potential for improving reproductive hormone disorders and energy metabolic diseases. Among Cordyceps, Cordyceps militaris has been reported to prevent metabolic syndromes including obesity and benefit the reproductive hormone system, suggesting that Cordyceps militaris can also regulate obesity induced by the menopause. We investigated the effectiveness of Cordyceps militaris extraction (CME) on menopausal obesity and its mechanisms. METHODS We applied an approach combining in vivo, in vitro, and in silico methods. Ovariectomized rats were administrated CME, and their body weight, area of adipocytes, liver and uterus weight, and lipid levels were measured. Next, after the exposure of MCF-7 human breast cancer cells to CME, cell proliferation and the phosphorylation of estrogen receptor and mitogen-activated protein kinases (MAPK) were measured. Finally, network pharmacological methods were applied to predict the anti-obesity mechanisms of CME. RESULTS CME prevented overweight, fat accumulation, liver hypertrophy, and lowered triglyceride levels, some of which were improved in a dose-dependent manner. In MCF-7 cell lines, CME showed not only estrogen receptor agonistic activity through an increase in cell proliferation and the phosphorylation of estrogen receptors, but also phosphorylation of extracellular-signal-regulated kinase and p38. In the network pharmacological analysis, bioactive compounds of CME such as cordycepin, adenine, and guanosine were predicted to interact with non-overlapping genes. The targeted genes were related to the insulin signaling pathway, insulin resistance, the MARK signaling pathway, the PI3K-Akt signaling pathway, and the estrogen signaling pathway. CONCLUSIONS These results suggest that CME has anti-obesity effects in menopause and estrogenic agonistic activity. Compounds in CME have the potential to regulate obesity-related and menopause-related pathways. This study will contribute to developing the understanding of anti-obesity effects and mechanisms of Cordyceps militaris.
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Affiliation(s)
- Dongyeop Jang
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, 13120, Korea
| | - Eunjoo Lee
- Department of Life Science, College of Bio-Nano Technology, Gachon University, Seongnam, 13120, Korea
| | - Sullim Lee
- Department of Life Science, College of Bio-Nano Technology, Gachon University, Seongnam, 13120, Korea
| | - Yongsam Kwon
- Dong-A Pharmaceutical Co., LTD, Yongin, 17073, Korea
| | - Ki Sung Kang
- Department of Preventive Medicine, College of Korean Medicine, Gachon University, Seongnam, 13120, Korea
| | - Chang-Eop Kim
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, 13120, Korea.
| | - Daeyoung Kim
- Department of Life Science, College of Bio-Nano Technology, Gachon University, Seongnam, 13120, Korea.
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19
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Gunathilake TMSU, Ching YC, Kadokami K. An overview of organic contaminants in indoor dust, their health impact, geographical distribution and recent extraction/analysis methods. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2022; 44:677-713. [PMID: 34170457 DOI: 10.1007/s10653-021-01013-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 06/14/2021] [Indexed: 05/16/2023]
Abstract
People spend a substantial proportion of their time indoors; therefore, exposure to contaminants in indoor dust is persistent and profuse. According to the findings of recent studies, contaminants such as flame retardants (FRs), organochlorines (OCs), and phthalate esters (PAEs) are more prevalent in indoor dust. The discrepancy in the geographical distribution of these chemicals indicates country-specific applications. However, many studies have revealed that chlorophosphates, polychlorinated biphenyls (PCBs) and di-2-ethylhexyl phthalate are frequently detected in indoor dust throughout the world. Although some chemicals (e.g., OCs) were banned/severely restricted decades ago, they have still been detected in indoor dust. These organic contaminants have shown clear evidence of carcinogenic, neurotoxic, immunogenic, and estrogenic activities. Recent extraction methods have shown their advantages, such as high recoveries, less solvent consumption, less extraction time and simplicity of use. The latest separation techniques such as two-dimensional gas/liquid chromatography, latest ionization techniques (e.g., matrix-assisted laser desorption/ionization (MALDI)), and modern techniques of mass spectrometry (e.g., tandem mass spectrometry (MS/MS), time-of-flight (TOF) and high-resolution mass spectrometry (HRMS)) improve the detection limits, accuracy, reproducibility and simultaneous detection of organic contaminants. For future perspectives, it is suggested that the importance of the study of dust morphology for comprehensive risk analysis, introducing standard reference materials to strengthen the analytical methods, adopt common guidelines for comparison of research findings and the importance of dust analysis in the developing world since lack of records on the production and usage of hazardous substances. Such measures will help to evaluate the effectiveness of prevailing legislations and to set up new regulations.
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Affiliation(s)
- Thennakoon M Sampath U Gunathilake
- Centre of Advanced Materials (CAM), Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia
- Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Yern Chee Ching
- Centre of Advanced Materials (CAM), Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia.
- Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia.
| | - Kiwao Kadokami
- Institute of Environmental Science and Technology, The University of Kitakyushu, Hibikino 1-1, Wakamatsu, Kitakyushu, 808-0135, Japan
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Marí-Bauset S, Peraita-Costa I, Donat-Vargas C, Llopis-González A, Marí-Sanchis A, Llopis-Morales J, Morales Suárez-Varela M. Systematic review of prenatal exposure to endocrine disrupting chemicals and autism spectrum disorder in offspring. AUTISM : THE INTERNATIONAL JOURNAL OF RESEARCH AND PRACTICE 2022; 26:6-32. [PMID: 34412519 DOI: 10.1177/13623613211039950] [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] [Indexed: 11/17/2022]
Abstract
LAY ABSTRACT Autism spectrum disorders comprise a complex group with many subtypes of behaviorally defined neurodevelopmental abnormalities in two core areas: deficits in social communication and fixated, restricted, repetitive, or stereotyped behaviors and interests each with potential unique risk factors and characteristics. The underlying mechanisms and the possible causes of autism spectrum disorder remain elusive and while increased prevalence is undoubtable, it is unclear if it is a reflection of diagnostic improvement or emerging risk factors such as endocrine disrupting chemicals. Epidemiological studies, which are used to study the relation between endocrine disrupting chemicals and autism spectrum disorder, can have inherent methodological challenges that limit the quality and strength of their findings. The objective of this work is to systematically review the treatment of these challenges and assess the quality and strength of the findings in the currently available literature. The overall quality and strength were "moderate" and "limited," respectively. Risk of bias due to the exclusion of potential confounding factors and the lack of accuracy of exposure assessment methods were the most prevalent. The omnipresence of endocrine disrupting chemicals and the biological plausibility of the association between prenatal exposure and later development of autism spectrum disorder highlight the need to carry out well-designed epidemiological studies that overcome the methodological challenges observed in the currently available literature in order to be able to inform public policy to prevent exposure to these potentially harmful chemicals and aid in the establishment of predictor variables to facilitate early diagnosis of autism spectrum disorder and improve long-term outcomes.
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Affiliation(s)
- Salvador Marí-Bauset
- Unit of Public Health and Environmental Care, Department of Preventive Medicine and Public Health, Food Sciences, Toxicology and Forensic Medicine, University of Valencia, Spain
| | - Isabel Peraita-Costa
- Unit of Public Health and Environmental Care, Department of Preventive Medicine and Public Health, Food Sciences, Toxicology and Forensic Medicine, University of Valencia, Spain
- CIBER in Epidemiology and Public Health (CIBERESP), Institute of Health Carlos III, Spain
| | | | - Agustín Llopis-González
- Unit of Public Health and Environmental Care, Department of Preventive Medicine and Public Health, Food Sciences, Toxicology and Forensic Medicine, University of Valencia, Spain
- CIBER in Epidemiology and Public Health (CIBERESP), Institute of Health Carlos III, Spain
| | | | - Juan Llopis-Morales
- Unit of Public Health and Environmental Care, Department of Preventive Medicine and Public Health, Food Sciences, Toxicology and Forensic Medicine, University of Valencia, Spain
| | - María Morales Suárez-Varela
- Unit of Public Health and Environmental Care, Department of Preventive Medicine and Public Health, Food Sciences, Toxicology and Forensic Medicine, University of Valencia, Spain
- CIBER in Epidemiology and Public Health (CIBERESP), Institute of Health Carlos III, Spain
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21
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Sun Y, Zhou Z, Jiang H, Duan Y, Li J, Liu X, Hong L, Zhao C. Preparation and evaluation of novel bio-based Bis-GMA-free dental composites with low estrogenic activity. Dent Mater 2021; 38:281-293. [PMID: 34955233 DOI: 10.1016/j.dental.2021.12.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 11/07/2021] [Accepted: 12/08/2021] [Indexed: 12/27/2022]
Abstract
OBJECTIVE Although bisphenol Aglycidyl methacrylate (Bis-GMA) are widely used in the dental composite, its raw materials include the petroleum-based product bisphenol A (BPA) with high estrogenic activity (EA). In this study, two new BPA-free dimethacrylate monomers from bio-based material creosol were synthesized and evaluated. METHODS The renewable bisphenol monomer 5, 5'-methylenedicreosol (BCF) was prepared from bio-based material creosol. By the human breast cancer cells (MCF-7 cells) proliferation assay, a risk assessment of BCF was performed to determine if BCF possessed reduced EA in comparison to BPA. Then, the novel monomers 5, 5'-methylenedicreosol diglycidyl ether diacrylate (BCF-EA) and 5, 5'-methylenedicreosol diglycidyl ether dimethacrylate (BCF-GMA) were synthesized from BCF with epichlorohydrin and (meth)acrylate. All products were investigated by 1H NMR and FT-IR spectra. The control resin was a mixture based on Bis-GMA and tri(ethyleneglycol) dimethacrylate (TEGDMA) with a weight ratio of 5:5 (5B5T). Similarly, experimental resin matrix was a mixture based on BCF-EA/TEGDMA (5E5T) and BCF-GMA/TEGDMA (5G5T). And their corresponding composites were then prepared with corresponding resin matrices and hybrid SiO2 (5E5TC, 5G5TC and 5B5TC). The properties of these composites were investigated according to the standard or referenced methods. Each sample was evaluated for double bond conversion (DC), shrinkage stress (SS) and volumetric polymerization shrinkage (VS). Water sorption (WS), water solubility (SL), mechanical properties and cytotoxicity were also measured. RESULTS 1H NMR and FT-IR spectra confirmed the chemical structure of each monomer. EA test revealed that bio-based bisphenol monomer BCF as the precursor of BCF-EA and BCF-GMA showed lower EA than BPA. Cured resin matrix: Both 5E5T and 5G5T had nearly the same DC (p < 0.05), which was higher than 5B5T (p < 0.05); 5E5T and 5G5T had lower VS, SL and cytotoxicity than 5B5T (p < 0.05); mechanical properties of 5E5T and 5G5T were all better than those of 5B5T (p < 0.05). Cured composite: There was no significant difference in conversion (p < 0.05); 5E5TC and 5G5TC had significantly lower VS (p < 0.05); WS of 5E5TC and 5G5TC were similar (p < 0.05), but higher compared to 5B5TC (p < 0.05); 5E5TC and 5G5TC had the deeper depth of cure (p > 0.05); before water immersion, there was no significant difference in flexural strength between 5E5TC and 5G5TC (p > 0.05), and higher than 5B5TC (p < 0.05); 5E5TC and 5G5TC showed less cytotoxicity than 5B5TC (p < 0.05). SIGNIFICANCE The new BPA-free di(meth)acrylates are promising photocurable dental monomers owning to bio-based raw material, high degree of conversion coupled with low curing shrinkage and good mechanical properties. Therefore, BCF-EA and BCF-GMA has a potential to be used as the substitution for Bis-GMA to prepare Bis-GMA-free dental composite.
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Affiliation(s)
- Yinan Sun
- College of Chemistry, Jilin University, Changchun 130012, PR China
| | - Zeying Zhou
- Department of Prosthodontic Dentistry, Hospital of Stomatology, Jilin University, Changchun 130012, PR China
| | - Hao Jiang
- College of Materials Science and Engineering, Jilin University, Changchun 130022, PR China
| | - Yuting Duan
- College of Chemistry, Jilin University, Changchun 130012, PR China
| | - Jialin Li
- College of Chemistry, Jilin University, Changchun 130012, PR China
| | - Xiaoqiu Liu
- Department of Prosthodontic Dentistry, Hospital of Stomatology, Jilin University, Changchun 130012, PR China
| | - Lihua Hong
- Endodontics Department of Stomatological Hospital, Jilin University, Changchun 130021, PR China.
| | - Chengji Zhao
- College of Chemistry, Jilin University, Changchun 130012, PR China.
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Identification of the EdcR Estrogen-Dependent Repressor in Caenibius tardaugens NBRC 16725: Construction of a Cellular Estradiol Biosensor. Genes (Basel) 2021; 12:genes12121846. [PMID: 34946795 PMCID: PMC8700777 DOI: 10.3390/genes12121846] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/19/2021] [Accepted: 11/21/2021] [Indexed: 01/14/2023] Open
Abstract
In this work, Caenibius tardaugens NBRC 16725 (strain ARI-1) (formerly Novosphingobium tardaugens) was isolated due to its capacity to mineralize estrogenic endocrine disruptors. Its genome encodes the edc genes cluster responsible for the degradation of 17β-estradiol, consisting of two putative operons (OpA and OpB) encoding the enzymes of the upper degradation pathway. Inside the edc cluster, we identified the edcR gene encoding a TetR-like protein. Genetic studies carried out with C. tardaugens mutants demonstrated that EdcR represses the promoters that control the expression of the two operons. These genetic analyses have also shown that 17β-estradiol and estrone, the second intermediate of the degradation pathway, are the true effectors of EdcR. This regulatory system has been heterologously expressed in Escherichia coli, foreseeing its use to detect estrogens in environmental samples. Genome comparisons have identified a similar regulatory system in the edc cluster of Altererythrobacter estronivorus MHB5, suggesting that this regulatory arrangement has been horizontally transferred to other bacteria.
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23
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Natsch A, Hostettler L, Haupt T, Laue H. A critical assessment of the estrogenic potency of benzyl salicylate. Toxicol Rep 2021; 8:1002-1007. [PMID: 34408969 PMCID: PMC8363597 DOI: 10.1016/j.toxrep.2021.05.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 04/30/2021] [Accepted: 05/01/2021] [Indexed: 02/04/2023] Open
Abstract
Benzyl salicylate (BS) is on priority lists for evaluation of estrogenic effects. New data in both MCF7 (E-screen) and luciferase transactivation assays. Potency of BS is 21′000′000-fold lower than estradiol in transactivation assay. Potency of BS is 36′000′000-fold lower than estradiol in E-screen. Potency is > 1000-fold below human relevant potency threshold.
Benzyl salicylate (BS) is a natural ingredient of essential oils and a widely used fragrance chemical. A number of in vitro screening studies have evaluated the estrogenic potential of BS with ambiguous results. Lack of dose-response information for the positive control 17β-estradiol (E2) in most studies makes an assessment of the relative potency and efficacy challenging. Notwithstanding this difficulty, BS has been added as the only fragrance ingredient to the list of the first 14 substances to be screened as potential endocrine disruptors by the European Scientific Committee for Consumer Safety (SCCS) and it is included in the Community rolling action plan (CoRAP) of the European REACH regulation to be assessed for the same property. Here we review all literature evidence and present new data to quantify the in vitro potency and efficacy of BS vs. E2 with full dose response analysis in both an estrogen response element (ERE) depending reporter gene assay and in the MCF7 cell proliferation (E-screen) assay. In both assays, very similar results for BS were found. BS is a partial agonist exhibiting 35–47 % maximal efficacy and it is active only close to the cytotoxic concentration. The extrapolated concentration to achieve 50 % efficacy is 21′000′000 higher as compared to E2 in the reporter gene assay. A ca. 36′000′000 higher concentration of BS as compared to E2 is required to reach equivalent partial cell proliferation stimulation in the MCF7 proliferation assay. This potency is significantly below the agonistic activity of known chemicals which cause estrogenic effects in in vivo assays. Importantly, in this study the weak agonistic activity is for the first time directly related to the activity of E2 in a full quantitative comparison in human cell lines which may help ongoing evaluations of BS by regulatory bodies.
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Key Words
- 4−OHT, 4-hydroxy-tamoxifen
- ATCC, American Type Culture Collection
- BPA, Bisphenol A
- BS, Benzyl salicylate
- Benzyl salicylate
- CAT, chloramphenicol acetyl transferase gene
- CoRAP, Community Rolling Action Plan
- DMEM, Dulbecco's Modified Eagle Medium
- DMSO, Dimethyl sulfoxide
- E2, 17β-estradiol
- ER, estrogen receptor
- ERE, estrogen response element
- Estrogen receptor
- FBS, foetal bovine serum
- HEPES, N-2-hydroxyethylpiperazine-N-ethanesulfonic acid
- HRPT, Human Relevant Potency Threshold
- MCF7 proliferation assay
- MoA, Mode of action
- NOAEL, no observed adverse effect level
- OECD, Organisation of Economic Co-operation and Development
- Potency
- REACH, Registration, Evaluation, Authorisation and Restriction of Chemicals
- Reporter assay
- SCCS, European Scientific Committee for Consumer Safety: SRB, sulforhodamine B
- Substance evaluation
- TG, test guideline
- YES, Yeast Estrogen screen
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Affiliation(s)
- Andreas Natsch
- Corresponding author at: Kemptpark 50, CH-8310, Kemptthal, Switzerland.
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Wang X, Ha D, Yoshitake R, Chan YS, Sadava D, Chen S. Exploring the Biological Activity and Mechanism of Xenoestrogens and Phytoestrogens in Cancers: Emerging Methods and Concepts. Int J Mol Sci 2021; 22:ijms22168798. [PMID: 34445499 PMCID: PMC8395949 DOI: 10.3390/ijms22168798] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 07/30/2021] [Accepted: 08/08/2021] [Indexed: 12/11/2022] Open
Abstract
Xenoestrogens and phytoestrogens are referred to as "foreign estrogens" that are produced outside of the human body and have been shown to exert estrogen-like activity. Xenoestrogens are synthetic industrial chemicals, whereas phytoestrogens are chemicals present in the plant. Considering that these environmental estrogen mimics potentially promote hormone-related cancers, an understanding of how they interact with estrogenic pathways in human cells is crucial to resolve their possible impacts in cancer. Here, we conducted an extensive literature evaluation on the origins of these chemicals, emerging research techniques, updated molecular mechanisms, and ongoing clinical studies of estrogen mimics in human cancers. In this review, we describe new applications of patient-derived xenograft (PDX) models and single-cell RNA sequencing (scRNA-seq) techniques in shaping the current knowledge. At the molecular and cellular levels, we provide comprehensive and up-to-date insights into the mechanism of xenoestrogens and phytoestrogens in modulating the hallmarks of cancer. At the systemic level, we bring the emerging concept of window of susceptibility (WOS) into focus. WOS is the critical timing during the female lifespan that includes the prenatal, pubertal, pregnancy, and menopausal transition periods, during which the mammary glands are more sensitive to environmental exposures. Lastly, we reviewed 18 clinical trials on the application of phytoestrogens in the prevention or treatment of different cancers, conducted from 2002 to the present, and provide evidence-based perspectives on the clinical applications of phytoestrogens in cancers. Further research with carefully thought-through concepts and advanced methods on environmental estrogens will help to improve understanding for the identification of environmental influences, as well as provide novel mechanisms to guide the development of prevention and therapeutic approaches for human cancers.
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Lee JH, Lee S, Nguyen QN, Phung HM, Shin MS, Kim JY, Choi H, Shim SH, Kang KS. Identification of the Active Ingredient and Beneficial Effects of Vitex rotundifolia Fruits on Menopausal Symptoms in Ovariectomized Rats. Biomolecules 2021; 11:1033. [PMID: 34356661 PMCID: PMC8301773 DOI: 10.3390/biom11071033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 07/10/2021] [Accepted: 07/12/2021] [Indexed: 12/13/2022] Open
Abstract
Estrogen replacement therapy is a treatment to relieve the symptoms of menopause. Many studies suggest that natural bioactive ingredients from plants resemble estrogen in structure and biological functions and can relieve symptoms of menopause. The fruit of V. rotundifolia, called "Man HyungJa" in Korean, is a traditional medicine used to treat headache, migraine, eye pain, neuralgia, and premenstrual syndrome in Korea and China. The aim of the present study was to confirm that V. rotundifolia fruit extract (VFE) exerts biological functions similar to those of estrogen in menopausal syndrome. We investigated its in vitro effects on MCF-7 cells and in vivo estrogen-like effects on weight gain and uterine contraction in ovariectomized rats. Using the polar extract, the active constituents of VFE (artemetin, vitexicarpin, hesperidin, luteolin, vitexin, and vanillic acid) with estrogen-like activity were identified in MCF-7 cells. In animal experiments, the efficacy of VFE in ameliorating body weight gain was similar to that of estrogen, as evidenced from improvements in uterine atrophy. Vitexin and vitexicarpin are suggested as the active constituents of V. rotundifolia fruits.
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Affiliation(s)
- Ji Hwan Lee
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea; (J.H.L.); (Q.N.N.); (H.M.P.); (M.-S.S.)
| | - Sullim Lee
- Department of Life Science, College of Bio-Nano Technology, Gachon University, Seongnam 13120, Korea;
| | - Quynh Nhu Nguyen
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea; (J.H.L.); (Q.N.N.); (H.M.P.); (M.-S.S.)
| | - Hung Manh Phung
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea; (J.H.L.); (Q.N.N.); (H.M.P.); (M.-S.S.)
| | - Myoung-Sook Shin
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea; (J.H.L.); (Q.N.N.); (H.M.P.); (M.-S.S.)
| | - Jae-Yong Kim
- College of Pharmacy, Duksung Women’s University, Seoul 01369, Korea;
| | - Hyukjae Choi
- College of Pharmacy, Yeungnam University, Gyeongsan 38541, Korea;
| | - Sang Hee Shim
- College of Pharmacy, Duksung Women’s University, Seoul 01369, Korea;
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea; (J.H.L.); (Q.N.N.); (H.M.P.); (M.-S.S.)
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Lee D, Kim YM, Chin YW, Kang KS. Schisandrol A Exhibits Estrogenic Activity via Estrogen Receptor α-Dependent Signaling Pathway in Estrogen Receptor-Positive Breast Cancer Cells. Pharmaceutics 2021; 13:pharmaceutics13071082. [PMID: 34371773 PMCID: PMC8308983 DOI: 10.3390/pharmaceutics13071082] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/12/2021] [Accepted: 07/12/2021] [Indexed: 01/29/2023] Open
Abstract
The aim of this study was to examine the estrogen-like effects of gentiopicroside, macelignan, γ-mangostin, and three lignans (schisandrol A, schisandrol B, and schisandrin C), and their possible mechanism of action. Their effects on the proliferation of the estrogen receptor (ER)-positive breast cancer cell line (MCF-7) were evaluated using Ez-Cytox reagents. The expression of extracellular signal-regulated kinase (ERK), phosphatidylinositol 3-kinase (PI3K), AKT, and estrogen receptor α (ERα) was measured by performing Western blot analysis. 17β-estradiol (E2), also known as estradiol, is an estrogen steroid and was used as a positive control. ICI 182,780 (ICI), an ER antagonist, was used to block the ER function. Our results showed that, except for gentiopicroside, all the compounds promoted proliferation of MCF-7 cells, with schisandrol A being the most effective; this effect was better than that of E2 and was mitigated by ICI. Consistently, the expression of ERK, PI3K, AKT, and ERα increased following treatment with schisandrol A; this effect was slightly better than that of E2 and was mitigated by ICI. Taken together, the ERα induction via the PI3K/AKT and ERK signaling pathways may be a potential mechanism underlying the estrogen-like effects of schisandrol A. This study provides an experimental basis for the application of schisandrol A as a phytoestrogen for the prevention of menopausal symptoms.
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Affiliation(s)
- Dahae Lee
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea;
| | - Young-Mi Kim
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul 08826, Korea;
| | - Young-Won Chin
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul 08826, Korea;
- Correspondence: (Y.-W.C.); (K.S.K.); Tel.: +82-2-880-7859 (Y.-W.C.); +82-31-750-5402 (K.S.K.)
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea;
- Correspondence: (Y.-W.C.); (K.S.K.); Tel.: +82-2-880-7859 (Y.-W.C.); +82-31-750-5402 (K.S.K.)
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de Souza LB, Tinti SV, Sousa IMDO, Montanari I, da Costa JL, de Carvalho JE, Foglio MA, Ruiz ALTG. Mentha aquatica L. aerial parts: in vitro anti-proliferative evaluation on human tumour and non-tumour cell lines. Nat Prod Res 2021; 36:3117-3123. [PMID: 34142601 DOI: 10.1080/14786419.2021.1937152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Bearing in mind the several medicinal properties of Mentha genus, this work aimed to evaluate the anti-proliferative potential of the ethanolic extract (EE) and fractions from M. aquatica L aerial parts. Using the anti-proliferative protocol developed by the NCI/USA, four fractions (F2 - F4 and F6) obtained from EE showed promising anti-proliferative profile against a panel of human tumor and non-tumor cell lines. After 24-h exposure, F2 (0.25 µg/mL) showed potent and irreversible anti-proliferative effect without inducing cell cycle arrest in both NCI-H460 and MCF-7 cells, without (anti) estrogenic activity. These effects were lost after storage of F2 diluted in dimethyl sulfoxide at -80 °C during 2 weeks. Analysis by gas chromatography coupled to mass detection evidenced some chemical changes induced by F2 storage in solution. The present study demonstrated the anti-proliferative effect of M. aquatica. Further studies are necessary to determine better storage conditions to enhance F2 stability.
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Affiliation(s)
- Luciana Bitencourt de Souza
- Chemical, Biological and Agricultural Pluridisciplinary Research Center (CPQBA), University of Campinas - UNICAMP, Paulínia, Brazil.,Postgraduate Program in Dentistry, Piracicaba Dental School, FOP, University of Campinas - UNICAMP, Piracicaba, Brazil
| | - Sirlene Valerio Tinti
- Chemical, Biological and Agricultural Pluridisciplinary Research Center (CPQBA), University of Campinas - UNICAMP, Paulínia, Brazil
| | | | - Ilio Montanari
- Chemical, Biological and Agricultural Pluridisciplinary Research Center (CPQBA), University of Campinas - UNICAMP, Paulínia, Brazil
| | - José Luiz da Costa
- LTA, Faculty of Pharmaceutical Sciences, FCF, University of Campinas - UNICAMP, Campinas, Brazil
| | - João Ernesto de Carvalho
- LAFTEx, Faculty of Pharmaceutical Sciences, FCF, University of Campinas - UNICAMP, Campinas, Brazil
| | - Mary Ann Foglio
- LAFTEx, Faculty of Pharmaceutical Sciences, FCF, University of Campinas - UNICAMP, Campinas, Brazil
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Analysis of Estrogenic Activity in Maryland Coastal Bays Using the MCF-7 Cell Proliferation Assay. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18126254. [PMID: 34207818 PMCID: PMC8296043 DOI: 10.3390/ijerph18126254] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 05/14/2021] [Accepted: 06/04/2021] [Indexed: 11/16/2022]
Abstract
Contaminants of Emerging Concern (CECs) with estrogenic or estrogenic-like activity have been increasingly detected in aquatic environments and have been an issue of global concern due to their potential negative effects on wildlife and human health. This study used the MCF-7 cell proliferation assay (E-Screen) to assess the estrogenic activity profiles in Maryland Coastal Bays (MCBs), a eutrophic system of estuaries impacted by human activities. Estrogenic activity was observed in all study sites tested. Water samples from MCBs increased MCF-7 cell proliferation above the negative control from 2.1-fold at site 8, located in Sinepuxent Bay close to the Ocean City Inlet, to 6.3-fold at site 6, located in Newport Bay. The proliferative effects of the sediment samples over the negative control ranged from 1.9-fold at the Assateague Island National Seashore site to 7.7-fold at the Public Landing site. Moreover, elevated cell proliferation (p < 0.05) was observed when cells were co-exposed with 17ß-Estradiol (E2), while reduction in cell proliferation was observed when cells were co-exposed with the antagonist ICI 182, 780 suggesting that cell proliferative effects were primarily mediated by the estrogen receptor (ER). These results suggest the occurrence of some estrogenic or hormonal-like compounds in the MCBs and are consistent with our previous findings based on vitellogenin analyses.
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29
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Cazzolla Gatti R. Why We Will Continue to Lose Our Battle with Cancers If We Do Not Stop Their Triggers from Environmental Pollution. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:6107. [PMID: 34198930 PMCID: PMC8201328 DOI: 10.3390/ijerph18116107] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 05/21/2021] [Accepted: 06/01/2021] [Indexed: 12/11/2022]
Abstract
Besides our current health concerns due to COVID-19, cancer is a longer-lasting and even more dramatic pandemic that affects almost a third of the human population worldwide. Most of the emphasis on its causes has been posed on genetic predisposition, chance, and wrong lifestyles (mainly, obesity and smoking). Moreover, our medical weapons against cancers have not improved too much during the last century, although research is in progress. Once diagnosed with a malignant tumour, we still rely on surgery, radiotherapy, and chemotherapy. The main problem is that we have focused on fighting a difficult battle instead of preventing it by controlling its triggers. Quite the opposite, our knowledge of the links between environmental pollution and cancer has surged from the 1980s. Carcinogens in water, air, and soil have continued to accumulate disproportionally and grow in number and dose, bringing us to today's carnage. Here, a synthesis and critical review of the state of the knowledge of the links between cancer and environmental pollution in the three environmental compartments is provided, research gaps are briefly discussed, and some future directions are indicated. New evidence suggests that it is relevant to take into account not only the dose but also the time when we are exposed to carcinogens. The review ends by stressing that more dedication should be put into studying the environmental causes of cancers to prevent and avoid curing them, that the precautionary approach towards environmental pollutants must be much more reactionary, and that there is an urgent need to leave behind the outdated petrochemical-based industry and goods production.
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Affiliation(s)
- Roberto Cazzolla Gatti
- Konrad Lorenz Institute for Evolution and Cognition Research, 3400 Klosterneuburg, Austria;
- Biological Institute, Tomsk State University, 634050 Tomsk, Russia
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30
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Duijndam B, Goudriaan A, van den Hoorn T, van der Stel W, Le Dévédec S, Bouwman P, van der Laan JW, van de Water B. Physiologically Relevant Estrogen Receptor Alpha Pathway Reporters for Single-Cell Imaging-Based Carcinogenic Hazard Assessment of Estrogenic Compounds. Toxicol Sci 2021; 181:187-198. [PMID: 33769548 PMCID: PMC8163057 DOI: 10.1093/toxsci/kfab037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Estrogen receptor alpha (ERα) belongs to the nuclear hormone receptor family of ligand-inducible transcription factors and regulates gene networks in biological processes such as cell growth and proliferation. Disruption of these networks by chemical compounds with estrogenic activity can result in adverse outcomes such as unscheduled cell proliferation, ultimately culminating in tumor formation. To distinguish disruptive activation from normal physiological responses, it is essential to quantify relationships between different key events leading to a particular adverse outcome. For this purpose, we established fluorescent protein MCF7 reporter cell lines for ERα-induced proliferation by bacterial artificial chromosome-based tagging of 3 ERα target genes: GREB1, PGR, and TFF1. These target genes are inducible by the non-genotoxic carcinogen and ERα agonist 17β-estradiol in an ERα-dependent manner and are essential for ERα-dependent cell-cycle progression and proliferation. The 3 GFP reporter cell lines were characterized in detail and showed different activation dynamics upon exposure to 17β-estradiol. In addition, they demonstrated specific activation in response to other established reference estrogenic compounds of different potencies, with similar sensitivities as validated OECD test methods. This study shows that these fluorescent reporter cell lines can be used to monitor the spatial and temporal dynamics of ERα pathway activation at the single-cell level for more mechanistic insight, thereby allowing a detailed assessment of the potential carcinogenic activity of estrogenic compounds in humans.
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Affiliation(s)
- Britt Duijndam
- Division of Drug Discovery & Safety, Leiden Academic Centre for Drug Research, Leiden University, Leiden 2333CC, The Netherlands.,Section on Pharmacology, Toxicology and Kinetics, Medicines Evaluation Board, Utrecht 3531AH, The Netherlands
| | - Annabel Goudriaan
- Division of Drug Discovery & Safety, Leiden Academic Centre for Drug Research, Leiden University, Leiden 2333CC, The Netherlands
| | - Tineke van den Hoorn
- Section on Pharmacology, Toxicology and Kinetics, Medicines Evaluation Board, Utrecht 3531AH, The Netherlands
| | - Wanda van der Stel
- Division of Drug Discovery & Safety, Leiden Academic Centre for Drug Research, Leiden University, Leiden 2333CC, The Netherlands
| | - Sylvia Le Dévédec
- Division of Drug Discovery & Safety, Leiden Academic Centre for Drug Research, Leiden University, Leiden 2333CC, The Netherlands
| | - Peter Bouwman
- Division of Drug Discovery & Safety, Leiden Academic Centre for Drug Research, Leiden University, Leiden 2333CC, The Netherlands
| | - Jan Willem van der Laan
- Section on Pharmacology, Toxicology and Kinetics, Medicines Evaluation Board, Utrecht 3531AH, The Netherlands
| | - Bob van de Water
- Division of Drug Discovery & Safety, Leiden Academic Centre for Drug Research, Leiden University, Leiden 2333CC, The Netherlands
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Estrogenic activity of ethyl gallate and its potential use in hormone replacement therapy. Bioorg Med Chem Lett 2021; 40:127919. [PMID: 33711444 DOI: 10.1016/j.bmcl.2021.127919] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 02/24/2021] [Accepted: 02/25/2021] [Indexed: 12/29/2022]
Abstract
We aimed to compare the estrogenic activities of compounds isolated from Moutan Cortex Radicis (MRC, Paeonia suffruticosa Andrews) and identify their potential use in hormone replacement therapy. We quantified seven marker components (gallic acid, oxypaeoniflorin, paeoniflorin, ethyl gallate, benzoic acid, benzoylpaeoniflorin, and paeonol) in MRC using a high-performance liquid chromatography simultaneous analysis assay. To investigate the estrogenic activity of MRC and the seven marker components, an E-screen assay was conducted using the estrogen receptor (ER)-positive MCF-7 human breast cancer cell line. Among them, ethyl gallate caused cell proliferation in a concentration-dependent manner at concentrations above 25 µM and was clearly suppressed by combination treatment with the ER antagonist ICI 182,780. Therefore, ethyl gallate may be a compound of MRC that can increase the estrogenic effect in ER-positive MCF-7 cells.
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In Vitro and Vivo Identification, Metabolism and Action of Xenoestrogens: An Overview. Int J Mol Sci 2021; 22:ijms22084013. [PMID: 33924608 PMCID: PMC8070283 DOI: 10.3390/ijms22084013] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 04/08/2021] [Accepted: 04/12/2021] [Indexed: 12/12/2022] Open
Abstract
Xenoestrogens (XEs) are substances that imitate endogenous estrogens to affect the physiologic functions of humans or other animals. As endocrine disruptors, they can be either synthetic or natural chemical compounds derived from diet, pesticides, cosmetics, plastics, plants, industrial byproducts, metals, and medications. By mimicking the chemical structure that is naturally occurring estrogen compounds, synthetic XEs, such as polychlorinated biphenyls (PCBs), bisphenol A (BPA), and diethylstilbestrol (DES), are considered the focus of a group of exogenous chemical. On the other hand, nature phytoestrogens in soybeans can also serve as XEs to exert estrogenic activities. In contrast, some XEs are not similar to estrogens in structure and can affect the physiologic functions in ways other than ER-ERE ligand routes. Studies have confirmed that even the weakly active compounds could interfere with the hormonal balance with persistency or high concentrations of XEs, thus possibly being associated with the occurrence of the reproductive tract or neuroendocrine disorders and congenital malformations. However, XEs are most likely to exert tissue-specific and non-genomic actions when estrogen concentrations are relatively low. Current research has reported that there is not only one factor affected by XEs, but opposite directions are also found on several occasions, or even different components stem from the identical endocrine pathway; thus, it is more challenging and unpredictable of the physical health. This review provides a summary of the identification, detection, metabolism, and action of XEs. However, many details of the underlying mechanisms remain unknown and warrant further investigation.
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33
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Muthusamy S, Palanisamy S, Ramalingam S. Exposure of bisphenol A in breast cancer patients-quantitatively assessed by sensitivity-enhanced high-performance liquid chromatography coupled with fluorescence detection: A case-control study. Biomed Chromatogr 2021; 35:e5137. [PMID: 33829524 DOI: 10.1002/bmc.5137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 03/17/2021] [Accepted: 04/05/2021] [Indexed: 11/09/2022]
Abstract
A simple, reproducible and sensitive liquid chromatography (HPLC) method has been developed and validated for estimation of bisphenol A (BPA) in human urine. A simple liquid-liquid extraction technique was used in BPA sample preparation. The analyte was chromatographed on a Shimadzu Prominence HPLC system using isocratic mobile phase conditions at a flow rate of 0.500 ml/min and a Hypersil Gold C18 column maintained at 40°C. Quantification was performed on a fluorescence detector set at excitation 275 nm, emission 313 nm and bisphenol B was used as internal standard. The total run time was 8 min. The method was found to have acceptable sensitivity, selectivity, accuracy (98.82-103.64%), precision (1.17-5.36) and stability in the validation experiment carried out as per the USFDA guidelines. The method sensitivity was as low as 0.50 ng/ml. The applicability of the validated analytical method was established in human patient urine samples. The mean human urine BPA concentrations were 1.18 ± 2.11 ng/ml in the control group and 5.76 ± 6.00 ng/ml in the patient group (P < 0.001). Therefore, this method could be considered as an alternative for routine bio-monitoring of BPA which is less expensive and feasible in resource-poor settings.
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Affiliation(s)
- Sivaselvakumar Muthusamy
- Department of PSG, Center for Molecular Medicine and Therapeutics, PSG Institute of Medical Sciences and Research, Coimbatore, Tamil Nadu, India
| | - Susipriya Palanisamy
- Department of PSG, Center for Molecular Medicine and Therapeutics, PSG Institute of Medical Sciences and Research, Coimbatore, Tamil Nadu, India
| | - Sudha Ramalingam
- Department of PSG, Center for Molecular Medicine and Therapeutics, PSG Institute of Medical Sciences and Research, Coimbatore, Tamil Nadu, India.,Department of Community Medicine, PSG Institute of Medical Sciences and Research, Coimbatore, Tamil Nadu, India
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34
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Soto AM, Schaeberle CM, Sonnenschein C. From Wingspread to CLARITY: a personal trajectory. Nat Rev Endocrinol 2021; 17:247-256. [PMID: 33514909 PMCID: PMC9662687 DOI: 10.1038/s41574-020-00460-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/09/2020] [Indexed: 01/30/2023]
Abstract
In the three decades since endocrine disruption was conceptualized at the Wingspread Conference, we have witnessed the growth of this multidisciplinary field and the accumulation of evidence showing the deleterious health effects of endocrine-disrupting chemicals. It is only within the past decade that, albeit slowly, some changes regarding regulatory measures have taken place. In this Perspective, we address some historical points regarding the advent of the endocrine disruption field and the conceptual changes that endocrine disruption brought about. We also provide our personal recollection of the events triggered by our serendipitous discovery of oestrogenic activity in plastic, a founder event in the field of endocrine disruption. This recollection ends with the CLARITY study as an example of a discordance between 'science for its own sake' and 'regulatory science' and leads us to offer a perspective that could be summarized by the motto attributed to Ludwig Boltzmann: "Nothing is more practical than a good theory".
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Affiliation(s)
- Ana M Soto
- Department of Immunology, Tufts University, School of Medicine, Boston, MA, USA.
| | - Cheryl M Schaeberle
- Department of Immunology, Tufts University, School of Medicine, Boston, MA, USA
| | - Carlos Sonnenschein
- Department of Immunology, Tufts University, School of Medicine, Boston, MA, USA
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35
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Long K, Sha Y, Mo Y, Wei S, Wu H, Lu D, Xia Y, Yang Q, Zheng W, Wei X. Androgenic and Teratogenic Effects of Iodoacetic Acid Drinking Water Disinfection Byproduct in Vitro and in Vivo. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:3827-3835. [PMID: 33646749 DOI: 10.1021/acs.est.0c06620] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Iodoacetic acid (IAA) is the most genotoxic iodinated disinfection byproduct known in drinking water. Previous studies have shown that IAA may be an endocrine disruptor. However, whether IAA has reproductive and developmental toxicity remains unclear. In this study, the reproductive and developmental toxicity of IAA was evaluated using a battery of in vitro and in vivo reproductive/developmental toxicity screening tests. The results of E-Screen, uterotrophic, and H295R steroidogenesis assays were negative. The Hershberger bioassay revealed that IAA could induce significant increases in absolute and relative weights of paired Cowper's glands. Moreover, there was an increasing trend in the relative weights of the ventral prostate. The micromass test showed that IAA could inhibit the differentiation of midbrain and limb bud cells. A reproductive/developmental toxicity screening test showed that IAA resulted in significantly increased relative weights of testis and seminal vesicles plus coagulating glands in parental male rats, with a dose-response relationship. IAA could not only induce head congestion in offspring but also decrease litter weight, viability index, and anogenital distance index of male pups on postnatal day 4. All these results indicated that IAA had reproductive and developmental toxicity.
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Affiliation(s)
- Kunling Long
- Department of Occupational and Environmental Health, School of Public Health, Guangxi Medical University, Shuang Yong Road 22, Nanning, Guangxi 530021, China
| | - Yujie Sha
- Department of Occupational and Environmental Health, School of Public Health, Guangxi Medical University, Shuang Yong Road 22, Nanning, Guangxi 530021, China
| | - Yan Mo
- Department of Occupational and Environmental Health, School of Public Health, Guangxi Medical University, Shuang Yong Road 22, Nanning, Guangxi 530021, China
| | - Shumao Wei
- Department of Occupational and Environmental Health, School of Public Health, Guangxi Medical University, Shuang Yong Road 22, Nanning, Guangxi 530021, China
| | - Huan Wu
- Department of Occupational and Environmental Health, School of Public Health, Guangxi Medical University, Shuang Yong Road 22, Nanning, Guangxi 530021, China
| | - Du Lu
- Department of Occupational and Environmental Health, School of Public Health, Guangxi Medical University, Shuang Yong Road 22, Nanning, Guangxi 530021, China
| | - Ying Xia
- Department of Occupational and Environmental Health, School of Public Health, Guangxi Medical University, Shuang Yong Road 22, Nanning, Guangxi 530021, China
| | - Qiyuan Yang
- Department of Occupational and Environmental Health, School of Public Health, Guangxi Medical University, Shuang Yong Road 22, Nanning, Guangxi 530021, China
| | - Weiwei Zheng
- Key Laboratory of the Public Health Safety, Ministry of Education, Department of Environmental Health, School of Public Health, Fudan University, Shanghai 200032, China
| | - Xiao Wei
- Department of Occupational and Environmental Health, School of Public Health, Guangxi Medical University, Shuang Yong Road 22, Nanning, Guangxi 530021, China
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Autophagy Triggers Tamoxifen Resistance in Human Breast Cancer Cells by Preventing Drug-Induced Lysosomal Damage. Cancers (Basel) 2021; 13:cancers13061252. [PMID: 33809171 PMCID: PMC7999102 DOI: 10.3390/cancers13061252] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 03/07/2021] [Accepted: 03/08/2021] [Indexed: 12/12/2022] Open
Abstract
Simple Summary Endocrine therapy with tamoxifen or other endocrine drugs represents the standard treatment for estrogen receptor-positive breast cancer. In spite of effectiveness of this therapy, onset of drug resistance worsens the prognosis of about 30% of patients. Autophagy has recently been proposed as a key player of drug resistance, but the underlying mechanisms are not completely understood. In this research, the authors investigate how autophagy triggers drug resistance in breast cancer cells. The results evidence that tamoxifen affects lysosome integrity, which suggests that this effect may contribute to the anticancer activity of this drug. Activation of autophagy and overexpression of iron-binding proteins synergize in protecting the lysosomal compartment, restraining drug effectiveness in breast cancer cells. According to these results, tamoxifen-resistant cells show an increased autophagic flux and overexpress iron-binding proteins. These findings indicate that screening for the level of iron-binding proteins may help to identify patients at risk for developing drug resistance. Abstract Endocrine resistance is a major complication during treatment of estrogen receptor-positive breast cancer. Although autophagy has recently gained increasing consideration among the causative factors, the link between autophagy and endocrine resistance remains elusive. Here, we investigate the autophagy-based mechanisms of tamoxifen resistance in MCF7 cells. Tamoxifen (Tam) triggers autophagy and affects the lysosomal compartment of MCF7 cells, such that activated autophagy supports disposal of tamoxifen-damaged lysosomes by lysophagy. MCF7 cells resistant to 5 µM tamoxifen (MCF7-TamR) have a higher autophagic flux and an enhanced resistance to Tam-induced lysosomal alterations compared to parental cells, which suggests a correlation between the two events. MCF7-TamR cells overexpress messenger RNAs (mRNAs) for metallothionein 2A and ferritin heavy chain, and they are re-sensitized to Tam by inhibition of autophagy. Overexpressing these proteins in parental MCF7 cells protects lysosomes from Tam-induced damage and preserves viability, while inhibiting autophagy abrogates lysosome protection. Consistently, we also demonstrate that other breast cancer cells that overexpress selected mRNAs encoding iron-binding proteins are less sensitive to Tam-induced lysosomal damage when autophagy is activated. Collectively, our data demonstrate that autophagy triggers Tam resistance in breast cancer cells by favoring the lysosomal relocation of overexpressed factors that restrain tamoxifen-induced lysosomal damage.
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Aliyev AT, Ozcan-Sezer S, Akdemir A, Gurer-Orhan H. In vitro evaluation of estrogenic, antiestrogenic and antitumor effects of amentoflavone. Hum Exp Toxicol 2021; 40:1510-1518. [PMID: 33678040 DOI: 10.1177/0960327121999454] [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] [Indexed: 01/24/2023]
Abstract
Apigenin, a flavonoid, is reported to act as an estrogen receptor (ER) agonist and inhibit aromatase enzyme. However, amentoflavone, a biflavonoid bearing two apigenin molecules, has not been evaluated for its endocrine modulatory effects. Besides, it is highly consumed by young people to build muscles, enhance mood and lose weight. In the present study, apigenin was used as a reference molecule and ER mediated as well as ER-independent estrogenic/antiestrogenic activity of amentoflavone was investigated. Antitumor activity of amentoflavone was also investigated in both ER positive (MCF-7 BUS) and triple-negative (MDA-MB-231) breast cancer cells and its cytotoxicity was evaluated in human breast epithelial cells (MCF-10A). Our data confirmed ER agonist, aromatase inhibitory and cytotoxic effects of apigenin in breast cancer cells, where no ER mediated estrogenic effect and physiologically irrelevant, slight, aromatase inhibition was found for amentoflavone. Although selective cytotoxicity of amentoflavone was found in MCF-7 BUS cells, it does not seem to be an alternative to the present cytotoxic drugs. Therefore, neither an adverse effect, mediated by an estrogenic/antiestrogenic effect of amentoflavone nor a therapeutical benefit would be expected from amentoflavone. Further studies could be performed to investigate its in vivo effects.
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Affiliation(s)
- A T Aliyev
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, 37509Ege University, Izmir, Turkey
| | - S Ozcan-Sezer
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, 37509Ege University, Izmir, Turkey
| | - A Akdemir
- Computer-Aided Drug Discovery Laboratory, Department of Pharmacology, Faculty of Pharmacy, 221265Bezmialem Vakif University, Istanbul, Turkey
| | - H Gurer-Orhan
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, 37509Ege University, Izmir, Turkey
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38
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Comparison of In Vitro Endocrine Activity of Phthalates and Alternative Plasticizers. J Toxicol 2021; 2021:8815202. [PMID: 33628236 PMCID: PMC7886589 DOI: 10.1155/2021/8815202] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 01/16/2021] [Indexed: 11/17/2022] Open
Abstract
Because of the deleterious effects of phthalates, regulations have been taken to decrease their use, and the needs for alternatives are increasing. Due to the concerns about the endocrine-disrupting properties of phthalates, it was deemed necessary to particularly investigate these effects for potential substitutes. In this study, we compared the in vitro endocrine activity of several already used potential alternative plasticizers (DEHT, DINCH, and TOTM) or new substitutes (POLYSORB® isosorbide and POLYSORB® ID 46) to one of 2 phthalates, DEHP and DINP. Effects of these chemicals on 3 common mechanisms of endocrine disruption, i.e., interaction with estrogen receptors (ER), androgen receptors (AR), or steroidogenesis, were studied using extensively used in vitro methods. In the E-Screen assay, only DEHP moderately induced MCF-7 cell proliferation; none of the other tested substances were estrogenic or antiestrogenic. No androgenic or antiandrogenic activity in MDA-kb2 cells was shown for any of the tested phthalates or alternatives. On the other hand, both DEHP and DINP, as well as DEHT, DINCH, and TOTM, disrupted steroidogenesis in the H295R assay, mainly by inducing an increase in estradiol synthesis; no such effect was observed for POLYSORB® isosorbide and POLYSORB® ID 46.
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Sorption Constant of Bisphenol A and Octylphenol Onto Size-Fractioned Dissolved Organic Matter Using a Fluorescence Method. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18031102. [PMID: 33513677 PMCID: PMC7908396 DOI: 10.3390/ijerph18031102] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 01/20/2021] [Accepted: 01/20/2021] [Indexed: 01/19/2023]
Abstract
Dissolved organic matter (DOM) is a complex and heterogeneous mixture ubiquitously present in aquatic systems. DOM affects octylphenol (OP) and bisphenol A (BPA) distribution, transport, bioavailability, and toxicity. This study investigated OP and BPA sorption constants, log KCOC, with three size-fractioned DOM. The molecular weights of the sized fractions were low molecular weight DOM (LDOM, <1 kDa), middle molecular weight DOM (MDOM, 1–10 kDa), and high molecular weight DOM (HDOM, 10 kDa–0.45 μm). The log KCOC ranged from 5.34 to 6.14 L/kg-C for OP and from 5.59 to 6.04 L/kg-C for BPA. The OP and BPA log KCOC values were insignificantly different (p = 0.37) and had a strong positive correlation (r = 0.85, p < 0.001). The OP and BPA LDOM log KCOC was significantly higher than the HDOM and MDOM log KCOC (p = 0.012 for BPA, p = 0.023 for OP). The average specific ultraviolet absorption (SUVA254) values were 32.0 ± 5.4, 13.8 ± 1.0, and 17.9 ± 2.8 L/mg-C/m for LDOM, MDOM, and HDOM, respectively. The log KCOC values for both OP and BPA had a moderately positive correlation with the SUVA254 values (r = 0.79–0.84, p < 0.002), which suggested the aromatic group content in the DOM had a positive impact on sorption behavior.
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40
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Eve L, Fervers B, Le Romancer M, Etienne-Selloum N. Exposure to Endocrine Disrupting Chemicals and Risk of Breast Cancer. Int J Mol Sci 2020; 21:E9139. [PMID: 33266302 PMCID: PMC7731339 DOI: 10.3390/ijms21239139] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 11/23/2020] [Accepted: 11/25/2020] [Indexed: 02/07/2023] Open
Abstract
Breast cancer (BC) is the second most common cancer and the fifth deadliest in the world. Exposure to endocrine disrupting pollutants has been suggested to contribute to the increase in disease incidence. Indeed, a growing number of researchershave investigated the effects of widely used environmental chemicals with endocrine disrupting properties on BC development in experimental (in vitro and animal models) and epidemiological studies. The complex effects of endocrine disrupting chemicals (EDCs) on hormonal pathways, involving carcinogenic effects and an increase in mammary gland susceptibility to carcinogenesis-together with the specific characteristics of the mammary gland evolving over the course of life and the multifactorial etiology of BC-make the evaluation of these compounds a complex issue. Among the many EDCs suspected of increasing the risk of BC, strong evidence has only been provided for few EDCs including diethylstilbestrol, dichlorodiphenyltrichloroethane, dioxins and bisphenol A. However, given the ubiquitous nature and massive use of EDCs, it is essential to continue to assess their long-term health effects, particularly on carcinogenesis, to eradicate the worst of them and to sensitize the population to minimize their use.
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Affiliation(s)
- Louisane Eve
- Faculté de Pharmacie, Université de Strasbourg, F-67000 Strasbourg, France;
- Université Claude Bernard Lyon 1, F-69000 Lyon, France
- Inserm U1052, Centre de Recherche en Cancérologie de Lyon, F-69000 Lyon, France
- CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, F-69000 Lyon, France
| | - Béatrice Fervers
- Centre de Lutte Contre le Cancer Léon-Bérard, F-69000 Lyon, France;
- Inserm UA08, Radiations, Défense, Santé, Environnement, Center Léon Bérard, F-69000 Lyon, France
| | - Muriel Le Romancer
- Université Claude Bernard Lyon 1, F-69000 Lyon, France
- Inserm U1052, Centre de Recherche en Cancérologie de Lyon, F-69000 Lyon, France
- CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, F-69000 Lyon, France
| | - Nelly Etienne-Selloum
- Faculté de Pharmacie, Université de Strasbourg, F-67000 Strasbourg, France;
- Service de Pharmacie, Institut de Cancérologie Strasbourg Europe, F-67000 Strasbourg, France
- CNRS UMR7021/Unistra, Laboratoire de Bioimagerie et Pathologies, Faculté de Pharmacie, Université de Strasbourg, F-67000 Strasbourg, France
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Cheilari A, Vontzalidou A, Makropoulou M, Meligova AK, Fokialakis N, Mitakou S, Alexis MN, Aligiannis N. Isoflavonoid Profiling and Estrogen-Like Activity of Four Genista Species from the Greek Flora. Molecules 2020; 25:molecules25235507. [PMID: 33255446 PMCID: PMC7727843 DOI: 10.3390/molecules25235507] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 11/19/2020] [Accepted: 11/21/2020] [Indexed: 11/16/2022] Open
Abstract
As part of our ongoing research on phytoestrogens, we investigated the phytochemical profile and estrogen-like activities of eight extracts from the aerial parts of four Genista species of Greek flora using estrogen-responsive cell lines. Ethyl acetate and methanolic extracts of G. acanthoclada, G. depressa,G. hassertiana, and G. millii were obtained with accelerated solvent extraction and their phytochemical profiles were compared using ultra-high-performance liquid chromatography-high-resolution mass spectrometry (uHPLC-HRMS). Fourteen isoflavonoids, previously isolated from G. halacsyi, were used as reference standards for their identification in the extracts. Thirteen isoflavonoids were detected in both extracts of G. acanthoclada and G. hassertiana, while fewer and far fewer were detected in G. millii and G. depressa, respectively. The ethyl acetate extracts of G. hassertiana and G. acanthoclada displayed 2.45- and 1.79-fold higher, respectively, estrogen-like agonist activity in Ishikawa cells compared to MCF-7 cells at pharmacologically relevant concentrations. Both these extracts, but not that of G. depressa, contained mono- and di-O-β-d-glucosides of genistein as well as the aglycone, all three of which are known to display full estrogen-like activity at lower-than-micromolar concentrations. The possibility of using preparations rich in G. hassertiana and/or G. acanthoclada extracts as a potentially safer substitute for low-dose vaginal estrogen for menopausal symptoms is discussed.
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Affiliation(s)
- Antigoni Cheilari
- Department of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopoli Zografou, 15771 Athens, Greece; (A.C.); (A.V.); (M.M.); (N.F.); (S.M.)
| | - Argyro Vontzalidou
- Department of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopoli Zografou, 15771 Athens, Greece; (A.C.); (A.V.); (M.M.); (N.F.); (S.M.)
- Institute of Chemical Biology, National Hellenic Research Foundation, 48, Vassileos Constantinou Avenue, 11635 Athens, Greece;
| | - Maria Makropoulou
- Department of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopoli Zografou, 15771 Athens, Greece; (A.C.); (A.V.); (M.M.); (N.F.); (S.M.)
- Institute of Chemical Biology, National Hellenic Research Foundation, 48, Vassileos Constantinou Avenue, 11635 Athens, Greece;
| | - Aggeliki K. Meligova
- Institute of Chemical Biology, National Hellenic Research Foundation, 48, Vassileos Constantinou Avenue, 11635 Athens, Greece;
| | - Nikolas Fokialakis
- Department of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopoli Zografou, 15771 Athens, Greece; (A.C.); (A.V.); (M.M.); (N.F.); (S.M.)
| | - Sofia Mitakou
- Department of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopoli Zografou, 15771 Athens, Greece; (A.C.); (A.V.); (M.M.); (N.F.); (S.M.)
| | - Michael N. Alexis
- Institute of Chemical Biology, National Hellenic Research Foundation, 48, Vassileos Constantinou Avenue, 11635 Athens, Greece;
- Correspondence: (M.N.A.); (N.A.); Tel.: +30-210-72-74-757 (N.A.)
| | - Nektarios Aligiannis
- Department of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopoli Zografou, 15771 Athens, Greece; (A.C.); (A.V.); (M.M.); (N.F.); (S.M.)
- Correspondence: (M.N.A.); (N.A.); Tel.: +30-210-72-74-757 (N.A.)
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Kartika IGAA, Bang IJ, Riani C, Insanu M, Kwak JH, Chung KH, Adnyana IK. Isolation and Characterization of Phenylpropanoid and Lignan Compounds from Peperomia pellucida [L.] Kunth with Estrogenic Activities. Molecules 2020; 25:E4914. [PMID: 33114252 PMCID: PMC7660628 DOI: 10.3390/molecules25214914] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 10/22/2020] [Accepted: 10/22/2020] [Indexed: 01/01/2023] Open
Abstract
Extracts of Peperomia pellucida [L.] Kunth have previously been demonstrated to have in vivo estrogenic-like effects, thereby functioning as an anti-osteoporotic agent. However, the compounds responsible for these effects have not yet been determined. Therefore, the aim of this study is to isolate and elucidate potential compounds with estrogenic activity. The structures of the isolated compounds were identified using 1D 1H and 13C-NMR and confirmed by 2D FT-NMR. The estrogenic activity was evaluated using the E-SCREEN assay, and a molecular docking study was performed to predict the binding affinity of the isolated compounds to estrogen receptors. In this experiment, we successfully isolated three phenylpropanoids and two lignan derivatives, namely, 6-allyl-5-methoxy-1,3-benzodioxol-4-ol (1), pachypostaudin B (2), pellucidin A (3), dillapiole (4), and apiol (5). Among these compounds, the isolation of 1 and 2 from P. pellucida is reported for the first time in this study. Activity assays clearly showed that the ethyl acetate extract and its fractions, subfractions, and isolated compounds exerted estrogenic activity. Methanol fraction of the ethyl acetate extract produced the highest estrogenic activity, while 1 and 2 had partial agonist activity. Some compounds (derivates of dillapiole and pellucidin A) also had, in addition, anti-estrogenic activity. In the docking study, the estrogenic activities of 1-5 appeared to be mediated by a classical ligand-dependent mechanism as suggested by the binding interaction between the compounds and estrogen receptors; binding occurred on Arg 394 and His 524 of the alpha receptor and Arg 346 and His 475 of the beta receptor. In summary, we reveal that P. pellucida is a promising anti-osteoporotic agent due to its estrogenic activity, and the compounds responsible for this activity were found to be lignan and phenylpropanoid derivatives. The presence of other compounds in either the extract or fraction may contribute to a synergistic effect, as suggested by the higher estrogenic activity of the methanol fraction. Hence, we suggest further research on the osteoporotic activity and safety of the identified compounds, especially regarding their effects on estrogen-responsive organs.
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Affiliation(s)
- I Gusti Agung Ayu Kartika
- Pharmacology and Clinical Pharmacy Department, School of Pharmacy, Institut Teknologi Bandung, Ganesha 10, Bandung 40132, Indonesia;
| | - In Jae Bang
- Prevent Pharm Laboratory, School of Pharmacy, Sungkyunkwan University, Suwon-Si, Gyeonggi-Do 16419, Korea;
| | - Catur Riani
- Laboratory of Pharmaceutical Biotechnology, School of Pharmacy, Institut Teknologi Bandung, Ganesha 10, Bandung 40132, Indonesia;
| | - Muhamad Insanu
- Pharmaceutical Biology Department, School of Pharmacy, Institut Teknologi Bandung, Ganesha 10, Bandung 40132, Indonesia;
| | - Jong Hwan Kwak
- Phytochemistry Laboratory, School of Pharmacy, Sungkyunkwan University, Suwon-Si, Gyeonggi-Do 16419, Korea
| | - Kyu Hyuck Chung
- Prevent Pharm Laboratory, School of Pharmacy, Sungkyunkwan University, Suwon-Si, Gyeonggi-Do 16419, Korea;
| | - I Ketut Adnyana
- Pharmacology and Clinical Pharmacy Department, School of Pharmacy, Institut Teknologi Bandung, Ganesha 10, Bandung 40132, Indonesia;
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Sexual EDC-ucation: What we Have Learned About Endocrine-Disrupting Chemicals and Reproduction. CURRENT SEXUAL HEALTH REPORTS 2020. [DOI: 10.1007/s11930-020-00269-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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44
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Kachuri L, Beane Freeman LE, Spinelli JJ, Blair A, Pahwa M, Koutros S, Hoar Zahm S, Cantor KP, Weisenburger DD, Pahwa P, Dosman JA, McLaughlin JR, Demers PA, Harris SA. Insecticide use and risk of non-Hodgkin lymphoma subtypes: A subset meta-analysis of the North American Pooled Project. Int J Cancer 2020; 147:3370-3383. [PMID: 32574374 PMCID: PMC7689728 DOI: 10.1002/ijc.33164] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 05/12/2020] [Accepted: 06/09/2020] [Indexed: 12/11/2022]
Abstract
Insecticide use has been linked to increased risk of non-Hodgkin lymphoma (NHL), however, findings of epidemiologic studies have been inconsistent, particularly for NHL subtypes. We analyzed 1690 NHL cases and 5131 controls in the North American Pooled Project (NAPP) to investigate self-reported insecticide use and risk of NHL overall and by subtypes: follicular lymphoma (FL), diffuse large B-cell lymphoma (DLBCL) and small lymphocytic lymphoma (SLL). Odds ratios (OR) and 95% confidence intervals for each insecticide were estimated using logistic regression. Subtype-specific associations were evaluated using ASSET (Association analysis for SubSETs). Increased risks of multiple NHL subtypes were observed for lindane (OR = 1.60, 1.20-2.10: FL, DLCBL, SLL), chlordane (OR = 1.59, 1.17-2.16: FL, SLL) and DDT (OR = 1.36, 1.06-1.73: DLBCL, SLL). Positive trends were observed, within the subsets with identified associations, for increasing categories of exposure duration for lindane (Ptrend = 1.7 × 10-4 ), chlordane (Ptrend = 1.0 × 10-3 ) and DDT (Ptrend = 4.2 × 10-3 ), however, the exposure-response relationship was nonlinear. Ever use of pyrethrum was associated with an increased risk of FL (OR = 3.65, 1.45-9.15), and the relationship with duration of use appeared monotonic (OR for >10 years: OR = 5.38, 1.75-16.53; Ptrend = 3.6 × 10-3 ). Our analysis identified several novel associations between insecticide use and specific NHL subtypes, suggesting possible etiologic heterogeneity in the context of pesticide exposure.
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Affiliation(s)
- Linda Kachuri
- Department of Epidemiology & Biostatistics, University of California San Francisco, San Francisco, California, USA
| | - Laura E Beane Freeman
- Division of Cancer Epidemiology and Genetics, U.S. National Cancer Institute, Bethesda, Maryland, USA
| | - John J Spinelli
- Population Oncology, BC Cancer, Vancouver, British Columbia, Canada.,School of Population and Public Health, University of British Columbia, Vancouver, British Columbia, Canada
| | - Aaron Blair
- Division of Cancer Epidemiology and Genetics, U.S. National Cancer Institute, Bethesda, Maryland, USA
| | - Manisha Pahwa
- Occupational Cancer Research Centre, Cancer Care Ontario, Toronto, Ontario, Canada
| | - Stella Koutros
- Division of Cancer Epidemiology and Genetics, U.S. National Cancer Institute, Bethesda, Maryland, USA
| | - Shelia Hoar Zahm
- Division of Cancer Epidemiology and Genetics, U.S. National Cancer Institute, Bethesda, Maryland, USA
| | - Kenneth P Cantor
- Division of Cancer Epidemiology and Genetics, U.S. National Cancer Institute, Bethesda, Maryland, USA
| | | | - Punam Pahwa
- Canadian Centre for Health and Safety in Agriculture, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.,Department of Community Health and Epidemiology, College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - James A Dosman
- Department of Community Health and Epidemiology, College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - John R McLaughlin
- Division of Epidemiology, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Paul A Demers
- Occupational Cancer Research Centre, Cancer Care Ontario, Toronto, Ontario, Canada.,Division of Occupational & Environmental Health, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada.,Population Health and Prevention, Cancer Care Ontario, Toronto, Ontario, Canada
| | - Shelley A Harris
- Occupational Cancer Research Centre, Cancer Care Ontario, Toronto, Ontario, Canada.,Division of Epidemiology, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada.,Division of Occupational & Environmental Health, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada.,Population Health and Prevention, Cancer Care Ontario, Toronto, Ontario, Canada
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45
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Creusot N, Gassiot M, Alaterre E, Chiavarina B, Grimaldi M, Boulahtouf A, Toporova L, Gerbal-Chaloin S, Daujat-Chavanieu M, Matheux A, Rahmani R, Gongora C, Evrard A, Pourquier P, Balaguer P. The Anti-Cancer Drug Dabrafenib Is a Potent Activator of the Human Pregnane X Receptor. Cells 2020; 9:cells9071641. [PMID: 32650447 PMCID: PMC7407672 DOI: 10.3390/cells9071641] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 06/29/2020] [Accepted: 07/06/2020] [Indexed: 12/22/2022] Open
Abstract
The human pregnane X receptor (hPXR) is activated by a large set of endogenous and exogenous compounds and plays a critical role in the control of detoxifying enzymes and transporters regulating liver and gastrointestinal drug metabolism and clearance. hPXR is also involved in both the development of multidrug resistance and enhanced cancer cells aggressiveness. Moreover, its unintentional activation by pharmaceutical drugs can mediate drug–drug interactions and cause severe adverse events. In that context, the potential of the anticancer BRAF inhibitor dabrafenib suspected to activate hPXR and the human constitutive androstane receptor (hCAR) has not been thoroughly investigated yet. Using different reporter cellular assays, we demonstrate that dabrafenib can activate hPXR as efficiently as its reference agonist SR12813, whereas it does not activate mouse or zebrafish PXR nor hCAR. We also showed that dabrafenib binds to recombinant hPXR, induces the expression of hPXR responsive genes in colon LS174T-hPXR cancer cells and human hepatocytes and finally increases the proliferation in LS174T-hPXR cells. Our study reveals that by using a panel of different cellular techniques it is possible to improve the assessment of hPXR agonist activity for new developed drugs.
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Affiliation(s)
- Nicolas Creusot
- Institut de Recherche en Cancérologie de Montpellier, Inserm U1194, Université de Montpellier, ICM, 34298 Montpellier, France; (N.C.); (M.G.); (E.A.); (B.C.); (M.G.); (A.B.); (L.T.); (A.M.); (C.G.); (A.E.)
| | - Matthieu Gassiot
- Institut de Recherche en Cancérologie de Montpellier, Inserm U1194, Université de Montpellier, ICM, 34298 Montpellier, France; (N.C.); (M.G.); (E.A.); (B.C.); (M.G.); (A.B.); (L.T.); (A.M.); (C.G.); (A.E.)
| | - Elina Alaterre
- Institut de Recherche en Cancérologie de Montpellier, Inserm U1194, Université de Montpellier, ICM, 34298 Montpellier, France; (N.C.); (M.G.); (E.A.); (B.C.); (M.G.); (A.B.); (L.T.); (A.M.); (C.G.); (A.E.)
| | - Barbara Chiavarina
- Institut de Recherche en Cancérologie de Montpellier, Inserm U1194, Université de Montpellier, ICM, 34298 Montpellier, France; (N.C.); (M.G.); (E.A.); (B.C.); (M.G.); (A.B.); (L.T.); (A.M.); (C.G.); (A.E.)
| | - Marina Grimaldi
- Institut de Recherche en Cancérologie de Montpellier, Inserm U1194, Université de Montpellier, ICM, 34298 Montpellier, France; (N.C.); (M.G.); (E.A.); (B.C.); (M.G.); (A.B.); (L.T.); (A.M.); (C.G.); (A.E.)
| | - Abdelhay Boulahtouf
- Institut de Recherche en Cancérologie de Montpellier, Inserm U1194, Université de Montpellier, ICM, 34298 Montpellier, France; (N.C.); (M.G.); (E.A.); (B.C.); (M.G.); (A.B.); (L.T.); (A.M.); (C.G.); (A.E.)
| | - Lucia Toporova
- Institut de Recherche en Cancérologie de Montpellier, Inserm U1194, Université de Montpellier, ICM, 34298 Montpellier, France; (N.C.); (M.G.); (E.A.); (B.C.); (M.G.); (A.B.); (L.T.); (A.M.); (C.G.); (A.E.)
| | - Sabine Gerbal-Chaloin
- IRMB, Université de Montpellier, INSERM, CHU Montpellier, 34090 Montpellier, France; (S.G.-C.); (M.D.-C.)
| | - Martine Daujat-Chavanieu
- IRMB, Université de Montpellier, INSERM, CHU Montpellier, 34090 Montpellier, France; (S.G.-C.); (M.D.-C.)
| | - Alice Matheux
- Institut de Recherche en Cancérologie de Montpellier, Inserm U1194, Université de Montpellier, ICM, 34298 Montpellier, France; (N.C.); (M.G.); (E.A.); (B.C.); (M.G.); (A.B.); (L.T.); (A.M.); (C.G.); (A.E.)
| | - Roger Rahmani
- INRA UMR 1331 TOXALIM, 06560 Sophia Antipolis, France;
| | - Céline Gongora
- Institut de Recherche en Cancérologie de Montpellier, Inserm U1194, Université de Montpellier, ICM, 34298 Montpellier, France; (N.C.); (M.G.); (E.A.); (B.C.); (M.G.); (A.B.); (L.T.); (A.M.); (C.G.); (A.E.)
| | - Alexandre Evrard
- Institut de Recherche en Cancérologie de Montpellier, Inserm U1194, Université de Montpellier, ICM, 34298 Montpellier, France; (N.C.); (M.G.); (E.A.); (B.C.); (M.G.); (A.B.); (L.T.); (A.M.); (C.G.); (A.E.)
| | - Philippe Pourquier
- Institut de Recherche en Cancérologie de Montpellier, Inserm U1194, Université de Montpellier, ICM, 34298 Montpellier, France; (N.C.); (M.G.); (E.A.); (B.C.); (M.G.); (A.B.); (L.T.); (A.M.); (C.G.); (A.E.)
- Correspondence: (P.P.); (P.B.); Tel.: +33-467613787 (P.P.); +33-467612409 (P.B.); Fax: +33-467613787 (P.P.); +33-467612337 (P.B.)
| | - Patrick Balaguer
- Institut de Recherche en Cancérologie de Montpellier, Inserm U1194, Université de Montpellier, ICM, 34298 Montpellier, France; (N.C.); (M.G.); (E.A.); (B.C.); (M.G.); (A.B.); (L.T.); (A.M.); (C.G.); (A.E.)
- Correspondence: (P.P.); (P.B.); Tel.: +33-467613787 (P.P.); +33-467612409 (P.B.); Fax: +33-467613787 (P.P.); +33-467612337 (P.B.)
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Xin Y, Wan B, Yu B, Fan Y, Chen D, Guo LH. Chlorinated Polyfluoroalkylether Sulfonic Acids Exhibit Stronger Estrogenic Effects than Perfluorooctane Sulfonate by Activating Nuclear Estrogen Receptor Pathways. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:3455-3464. [PMID: 31927955 DOI: 10.1021/acs.est.9b07708] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Chlorinated polyfluoroalkylether sulfonic acids (Cl-PFESAs) have been shown to have potential thyroid hormone (TH) disruption effects. Here, we further investigated their estrogenic effects and underlying mechanisms. In vivo results revealed that exposure of zebrafish to Cl-PFESAs induced disorder of sex hormones during the early embryonic stages and caused histopathological lesions in the gonads of adult zebrafish relative to control groups. To find out whether the estrogen receptor is the molecular target of Cl-PFESAs, the binding interaction between Cl-PFESAs and ERs was investigated using a series of in vitro assays. We found that all tested chemicals could bind directly to ERs and exhibit relatively weak agonistic activity toward ERs, suggesting that the ER-mediated signaling pathway is directly involved in the estrogenic effects of Cl-PFESAs. The internal dose of 8:2 Cl-PFESA was significantly higher than the others, which explained why it obviously displayed an ER agonistic effect despite its weak ER binding affinity. Taken together, these results uncover that, in addition to the TH disruption effect, Cl-PFESAs might also cause estrogenic effects by activating ER pathways.
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Affiliation(s)
- Yan Xin
- The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China
- Institute for Immunology, School of Medicine, Tsinghua University, Beijing 100084, China
- State Key Laboratory of Environmental Chemistry and Eco-Toxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Bin Wan
- State Key Laboratory of Environmental Chemistry and Eco-Toxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100039, China
| | - Bolan Yu
- The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China
| | - Yong Fan
- The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China
| | - De Chen
- The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China
| | - Liang-Hong Guo
- Institute of Environmental and Health Sciences, China Jiliang University, Hangzhou, Zhejiang 310018, China
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Cassity-Duffey K, Cabrera M, Habteselassie M, Hassan S, Rema J, Fairchild B. Stacking broiler litter to reduce natural hormones. Poult Sci 2020; 99:1379-1386. [PMID: 32111312 PMCID: PMC7587855 DOI: 10.1016/j.psj.2019.11.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 10/29/2019] [Accepted: 11/05/2019] [Indexed: 12/02/2022] Open
Abstract
Estrone, 17β-estradiol, and testosterone are naturally occurring hormones excreted in broiler litter. With some potential for environmental concern from the hormones, understanding management practices effect on hormone concentrations is beneficial for the poultry industry. As the amount of hormones potentially introduced into the environment is directly related to the concentration at the time of land application, the purpose of this study was to investigate hormone dynamics in stacked broiler litter during the storage period before removal from the farm and/or land application. Stack temperatures and hormones concentrations were monitored at 15, 45, 75 cm, and 105 cm (measured from the stack bottom) in 6 different on-farm stack houses over 4 or 8 wk. Significant differences in temperature were determined by height and by stack. Stack temperatures during the first 4 wk ranged from 41.5°C to 54.5°C, and all stacks reached maximum temperature by 7 D. Highest temperatures were observed at the 45-cm or 75-cm height. Average stack temperatures correlated with the ambient temperature. Hormone concentration did not vary with height within each house. In 5 of the 6 stack houses, the concentrations of 17β-estradiol and/or testosterone significantly decreased after stacking for 4 or 8 wk (35 to 64%) with only one house showing a significant decrease in estrone concentration (72% in 4 wk). The percent change of estrone and 17β-estradiol mineralization during the first 4 wk was negatively correlated with the 7-D temperature of the pile (r2 = 0.80), indicating that the high temperatures observed during stacking may inhibit estrogen mineralization. In this study, hormone degradation decreased with high temperatures. Therefore, stack management favoring at least a period of low temperatures may help promote mineralization of these hormones and reduce any potential for introduction into the surrounding environment.
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Affiliation(s)
| | - Miguel Cabrera
- Crop and Soil Sciences, University of Georgia, Athens, GA 30602, USA
| | - Mussie Habteselassie
- Crop and Soil Science Department, University of Georgia, Griffin, GA 30223, USA; Poultry Sciences Department, University of Georgia, Griffin, GA 30223, USA
| | - Sayed Hassan
- Lab for Environmental Analysis, University of Georgia, Athens, GA 30602, USA
| | - John Rema
- Crop and Soil Sciences, University of Georgia, Athens, GA 30602, USA
| | - Brian Fairchild
- Poultry Science, University of Georgia, Athens, GA 30602, USA
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Ahmed NS, Wober J. Synthesis of novel flexible tamoxifen analogues to overcome CYP2D6 polymorphism and their biological evaluation on MCF-7 cell line. Drug Dev Res 2020; 81:444-455. [PMID: 31916635 DOI: 10.1002/ddr.21637] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 12/01/2019] [Accepted: 12/21/2019] [Indexed: 11/08/2022]
Abstract
Tamoxifen (TAM) is currently the endocrine treatment of choice for all stages of breast cancer; it has proven success in ER positive and ER negative patients. TAM is activated by endogenous CYP450 enzymes to the more biologically active metabolites 4-hydroxytamoxifen and endoxifen mainly via CYP2D6 and CYP3A4/5. CYP2D6 has been investigated for polymorphism; there is a large interindividual variation in the enzyme activity, this drastically effects clinical outcomes of tamoxifen treatment. Here in we report the design and synthesis of 10 novel compounds bearing a modified tamoxifen skeleton, ring C is substituted with different ester groups to bypass the CYP2D6 enzyme metabolism and employ esterase enzymes for activation. All compounds endorse flexibility on ring A. Compounds (II-X) showed MCF-7% growth inhibition >50% at a screening dose of 10 μM. These results were validated by yeast estrogen screen (YES) and E-Screen assay combined with XTT assay. Compound II (E/Z 4-[1-4-(3-Dimethylamino-propoxy)-phenyl)-3-(4-methoxy-phenyl)-2-methyl-propenyl]-phenol) showed nanomolar antiestrogenic activity (IC50 = 510 nM in YES assay) and was five times more potent in inhibiting the growth of MCF-7 BUS (IC50 = 96 nM) compared to TAM (IC50 = 503 nM). Esterified analogues VI, VII were three times more active than TAM on MCF-7 BUS (IC50 = 167 nM). Novel analogues are prodrugs that can ensure equal clinical outcomes to all breast cancer patients.
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Affiliation(s)
- Nermin S Ahmed
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo, Egypt
| | - Jannette Wober
- Institute of Zoology, Faculty of Biology, Technische Universität Dresden, Dresden, Germany
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Estrogenic biological activity and underlying molecular mechanisms of green tea constituents. Trends Food Sci Technol 2020. [DOI: 10.1016/j.tifs.2019.11.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Peng Y, Wang J, Wu C. Determination of Endocrine Disruption Potential of Bisphenol A Alternatives in Food Contact Materials Using In Vitro Assays: State of the Art and Future Challenges. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:12613-12625. [PMID: 31180677 DOI: 10.1021/acs.jafc.9b01543] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Alternatives to bisphenol A (BPA) are developed for food contact materials as a result of increasing evidence of exposure-correlated harmful effects of BPA. In vitro assays provide the fast, affordable, and mechanism insightful ways to screen endocrine disruption (ED), which is a major concern of new BPA alternatives. In this review, we summarize the safety and regulation information on the alternatives to BPA, review the state of the art of in vitro assays for ED evaluation, highlight their advantages and limitations, and discuss the challenges and future research needs. Our review shows that ligand binding, reporter gene, cell proliferation, and steroidogenesis are four commonly used in vitro assays to determine the ED at the response of receptor, gene transcription, and whole cell level. Major challenges are found from in vitro-in vivo translation and identification of ED chemicals in polymers. More studies on these areas are needed in the future.
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Affiliation(s)
- Ying Peng
- Department of Animal and Food Sciences , University of Delaware , Newark , Delaware 19716 , United States
| | - Jieliang Wang
- College of Pharmacy , The University of Texas at Austin , Austin , Texas 78712 , United States
| | - Changqing Wu
- Department of Animal and Food Sciences , University of Delaware , Newark , Delaware 19716 , United States
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