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Chen G, Niu X, Chen Y, Wang M, Bi Y, Gao Y, Ji Y, An T. Estrogenic disruption effects and formation mechanisms of transformation products during photolysis of preservative parabens. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 924:171608. [PMID: 38492588 DOI: 10.1016/j.scitotenv.2024.171608] [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: 01/19/2024] [Revised: 03/03/2024] [Accepted: 03/07/2024] [Indexed: 03/18/2024]
Abstract
The ubiquitous presence of emerging contaminants (ECs) in the environment and their associated adverse effects has raised concerns about their potential risks. The increased toxicity observed during the environmental transformation of ECs is often linked to the formation of their transformation products (TPs). However, comprehension of their formation mechanisms and contribution to the increased toxicity remains an unresolved challenge. To address this gap, by combining quantum chemical and molecular simulations with photochemical experiments in water, this study investigated the formation of TPs and their molecular interactions related to estrogenic effect using the photochemical degradation of benzylparaben (BZP) preservative as a representative example. A non-targeted analysis was carried out and three previously unknown TPs were identified during the transformation of BZP. Noteworthy, two of these novel TPs, namely oligomers BZP-o-phenol and BZP-m-phenol, exhibited higher estrogenic activities compared to the parent BZP. Their IC50 values of 0.26 and 0.50 μM, respectively, were found to be lower than that of the parent BZP (6.42 μM). The binding free energies (ΔGbind) of BZP-o-phenol and BZP-m-phenol (-29.71 to -23.28 kcal·mol-1) were lower than that of the parent BZP (-20.86 kcal·mol-1), confirming their stronger binding affinities toward the estrogen receptor (ER) α-ligand binding domain. Subsequent analysis unveiled that these hydrophobic residues contributed most favorably to ER binding, with van der Waals interactions playing a significant role. In-depth examination of the formation mechanisms indicated that these toxic TPs primarily originated from the successive cleavage of ester bonds (OCH2C6H5 and COO group), followed by their combination with BZP*. This study provides valuable insight into the mechanisms underlying the formation of toxic TPs and their binding interactions causing the endocrine-disrupting effects. It offers a crucial framework for elucidating the toxicological patterns of ECs with similar structures.
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Affiliation(s)
- Guanhui Chen
- Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Key Laboratory of City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Xiaolin Niu
- Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Key Laboratory of City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Yi Chen
- Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Key Laboratory of City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Mei Wang
- Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Key Laboratory of City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Yashi Bi
- Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Key Laboratory of City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Yanpeng Gao
- Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Key Laboratory of City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
| | - Yuemeng Ji
- Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Key Laboratory of City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Taicheng An
- Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Key Laboratory of City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
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Mao W, Jin H, Guo R, Chen P, Zhong S, Wu X. Distribution of parabens and 4-HB in human blood. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 914:169874. [PMID: 38185174 DOI: 10.1016/j.scitotenv.2024.169874] [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: 11/02/2023] [Revised: 12/16/2023] [Accepted: 01/01/2024] [Indexed: 01/09/2024]
Abstract
Human blood has been commonly and routinely analyzed to determine internal human exposure to parabens. However, data on the occurrence of parabens and their common metabolite, p-hydroxybenzoic acid (4-HB), in different human blood matrixes is still limited. In this study, 139 pairs of serum and whole blood samples were collected from Chinese adults, and then analyzed them for 5 parabens and 4-HB. Methylparaben (MeP) and propylparaben (PrP) were consistently the predominant parabens in human serum (mean 2.3 and 2.1 ng/mL, respectively) and whole blood (1.9 and 1.3 ng/mL, respectively). Mean concentrations of 4-HB in human serum and whole blood were 7.7 and 12 ng/mL, respectively. Concentrations of parabens, except benzylparaben (BzP), and 4-HB in human serum were significantly (p < 0.01) correlated with that in whole blood. Distribution pattern of parabens and 4-HB in human blood was evaluated, for the first time, based on their partitioning between human serum and whole blood (Kp). Mean Kp values of parabens, except BzP, increased with the alkyl chain length from 0.83 to 1.6. BzP (mean 1.4) had a comparable mean Kp value to PrP (mean 1.4). Among target analytes, 4-HB had the lowest mean Kp value (0.75). These data are important to select appropriate blood matrixes for conducting human exposure assessment and epidemiological studies on parabens.
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Affiliation(s)
- Weili Mao
- Department of Pharmacy, Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's Hospital, Quzhou, Zhejiang 324000, PR China
| | - Hangbiao Jin
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, PR China; Innovation Research Center of Advanced Environmental Technology, Eco-Industrial Innovation Institute ZJUT, Quzhou, Zhejiang 324400, PR China
| | - Ruyue Guo
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, PR China
| | - Ping Chen
- Department of Pharmacy, Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's Hospital, Quzhou, Zhejiang 324000, PR China
| | - Songyang Zhong
- Department of Pharmacy, Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's Hospital, Quzhou, Zhejiang 324000, PR China
| | - Xilin Wu
- Department of Pharmacy, Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's Hospital, Quzhou, Zhejiang 324000, PR China.
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Eghan K, Lee S, Kim WK. Cardio- and neuro-toxic effects of four parabens on Daphnia magna. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 268:115670. [PMID: 37976924 DOI: 10.1016/j.ecoenv.2023.115670] [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: 09/13/2023] [Revised: 11/04/2023] [Accepted: 11/07/2023] [Indexed: 11/19/2023]
Abstract
Parabens can potentially disrupt the hormonal regulation of energy metabolism, leading to issues related to obesity, metabolic health, and the cardiovascular and nervous systems. However, the health effects of parabens have yielded conflicting research results. The impact of these substances on aquatic organisms, specifically their neuro- and cardio-toxic effects, has been insufficiently investigated. Hence, the primary goal of our research was to investigate and comprehensively assess the neuro- and cardio-toxic effects of four distinct parabens using the Daphnia magna model. After 48 h of exposure to various concentrations (0.1, 1, and 10 mg/L) of four parabens (methyl-, ethyl-, propyl-, and butyl-paraben), along with a solvent control, we conducted a series of physiological tests, behavioral observations, and gene transcription analyses, focusing on cardiomyopathy, serotonin, glutamate, dopamine, GABA, acetylcholine receptors, and ion flux. From a physiological perspective, the heart rate and thoracic limb activity of the exposed daphnids showed substantial time- and dose-dependent inhibitions. Notably, among the parabens tested, butylparaben exhibited the most potent inhibition, with significant alterations in cardiomyopathy-related gene transcription. In the context of neurotoxicity, all the parabens had a significant impact on gene expression, with methylparaben having the most pronounced effect. Additionally, significant changes were observed in parameters such as distance moved, the distance between individuals, and the extent of body contact among the daphnids. In summary, our findings indicate that each paraben has the capacity to induce neurobehavioral and cardiotoxic disorders in Daphnia magna. The effects of butylparaben on the cardiovascular and nervous systems were found to be the most pronounced. These discoveries showed the potential ecological implications of paraben exposure in aquatic ecosystems, particularly regarding the predator avoidance abilities of Daphnia magna.
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Affiliation(s)
- Kojo Eghan
- Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon 34114, Republic of Korea; Human and Environmental Toxicology, University of Science and Technology, Daejeon 34113, Republic of Korea
| | - Sangwoo Lee
- Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon 34114, Republic of Korea; Human and Environmental Toxicology, University of Science and Technology, Daejeon 34113, Republic of Korea
| | - Woo-Keun Kim
- Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon 34114, Republic of Korea; Human and Environmental Toxicology, University of Science and Technology, Daejeon 34113, Republic of Korea.
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Miret NV, Pontillo CA, Buján S, Chiappini FA, Randi AS. Mechanisms of breast cancer progression induced by environment-polluting aryl hydrocarbon receptor agonists. Biochem Pharmacol 2023; 216:115773. [PMID: 37659737 DOI: 10.1016/j.bcp.2023.115773] [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: 06/15/2023] [Revised: 08/23/2023] [Accepted: 08/30/2023] [Indexed: 09/04/2023]
Abstract
Breast cancer is the most common invasive malignancy among women worldwide and constitutes a complex and heterogeneous disease. Interest has recently grown in the role of the aryl hydrocarbon receptor (AhR) in breast cancer and the contribution of environment-polluting AhR agonists. Here, we present a literature review addressing AhR ligands, including pesticides hexachlorobenzene and chlorpyrifos, polycyclic aromatic hydrocarbons, polychlorinated dibenzo-p-dioxins and dibenzofurans, polychlorinated biphenyls, parabens, and phthalates. The objectives of this review are a) to summarize recent original experimental, preclinical, and clinical studies on the biological mechanisms of AhR agonists which interfere with the regulation of breast endocrine functions, and b) to examine the biological effects of AhR ligands and their impact on breast cancer development and progression. We discuss biological mechanisms of action in cell viability, cell cycle, proliferation, epigenetic changes, epithelial to mesenchymal transition, and cell migration and invasion. In addition, we examine the effects of AhR ligands on angiogenic processes, metastasis, chemoresistance, and stem cell renewal. We conclude that exposure to AhR agonists stimulates pathways that promote breast cancer development and may contribute to tumor progression. Given the massive use of industrial and agricultural chemicals, ongoing evaluation of their effects in laboratory assays and preclinical studies in breast cancer at environmentally relevant doses is deemed essential. Likewise, awareness should be raised in the population regarding the most harmful toxicants to eradicate or minimize their use.
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Affiliation(s)
- Noelia V Miret
- Universidad de Buenos Aires, Facultad de Medicina, Departamento de Bioquímica Humana, Laboratorio de Efectos Biológicos de Contaminantes Ambientales, Paraguay 2155, Piso 5, (CP 1121), Buenos Aires, Argentina; Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Físico-Matemática, Laboratorio de Radioisótopos, Junín 954, 1er subsuelo (CP1113), Buenos Aires, Argentina.
| | - Carolina A Pontillo
- Universidad de Buenos Aires, Facultad de Medicina, Departamento de Bioquímica Humana, Laboratorio de Efectos Biológicos de Contaminantes Ambientales, Paraguay 2155, Piso 5, (CP 1121), Buenos Aires, Argentina
| | - Sol Buján
- Universidad de Buenos Aires, Facultad de Medicina, Departamento de Bioquímica Humana, Laboratorio de Efectos Biológicos de Contaminantes Ambientales, Paraguay 2155, Piso 5, (CP 1121), Buenos Aires, Argentina
| | - Florencia A Chiappini
- Universidad de Buenos Aires, Facultad de Medicina, Departamento de Bioquímica Humana, Laboratorio de Efectos Biológicos de Contaminantes Ambientales, Paraguay 2155, Piso 5, (CP 1121), Buenos Aires, Argentina
| | - Andrea S Randi
- Universidad de Buenos Aires, Facultad de Medicina, Departamento de Bioquímica Humana, Laboratorio de Efectos Biológicos de Contaminantes Ambientales, Paraguay 2155, Piso 5, (CP 1121), Buenos Aires, Argentina.
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Tapia JL, McDonough JC, Cauble EL, Gonzalez CG, Teteh DK, Treviño LS. Parabens Promote Protumorigenic Effects in Luminal Breast Cancer Cell Lines With Diverse Genetic Ancestry. J Endocr Soc 2023; 7:bvad080. [PMID: 37409182 PMCID: PMC10318621 DOI: 10.1210/jendso/bvad080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Indexed: 07/07/2023] Open
Abstract
Context One in 8 women will develop breast cancer in their lifetime. Yet, the burden of disease is greater in Black women. Black women have a 40% higher mortality rate than White women, and a higher incidence of breast cancer at age 40 and younger. While the underlying cause of this disparity is multifactorial, exposure to endocrine disrupting chemicals (EDCs) in hair and other personal care products has been associated with an increased risk of breast cancer. Parabens are known EDCs that are commonly used as preservatives in hair and other personal care products, and Black women are disproportionately exposed to products containing parabens. Objective Studies have shown that parabens impact breast cancer cell proliferation, death, migration/invasion, and metabolism, as well as gene expression in vitro. However, these studies were conducted using cell lines of European ancestry; to date, no studies have utilized breast cancer cell lines of West African ancestry to examine the effects of parabens on breast cancer progression. Like breast cancer cell lines with European ancestry, we hypothesize that parabens promote protumorigenic effects in breast cancer cell lines of West African ancestry. Methods Luminal breast cancer cell lines with West African ancestry (HCC1500) and European ancestry (MCF-7) were treated with biologically relevant doses of methylparaben, propylparaben, and butylparaben. Results Following treatment, estrogen receptor target gene expression and cell viability were examined. We observed altered estrogen receptor target gene expression and cell viability that was paraben and cell line specific. Conclusion This study provides greater insight into the tumorigenic role of parabens in the progression of breast cancer in Black women.
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Affiliation(s)
- Jazma L Tapia
- Division of Health Equities, Department of Population Sciences, Beckman Research Institute, City of Hope Comprehensive Cancer Center, Duarte, CA 91010, USA
| | - Jillian C McDonough
- Division of Health Equities, Department of Population Sciences, Beckman Research Institute, City of Hope Comprehensive Cancer Center, Duarte, CA 91010, USA
| | - Emily L Cauble
- Division of Health Equities, Department of Population Sciences, Beckman Research Institute, City of Hope Comprehensive Cancer Center, Duarte, CA 91010, USA
| | - Cesar G Gonzalez
- Irell and Manella Graduate School of Biological Sciences, Beckman Research Institute, City of Hope Comprehensive Cancer Center, Duarte, CA 91010, USA
| | - Dede K Teteh
- Department of Health Sciences, Crean College of Health and Behavioral Sciences, Chapman University, Orange, CA 92866, USA
| | - Lindsey S Treviño
- Correspondence: Lindsey S. Treviño, PhD, Division of Health Equities, Department of Population Sciences, City of Hope Comprehensive Cancer Center, 1500 E. Duarte Rd, Duarte, CA 91010, USA.
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Albouy M, Deceuninck Y, Migeot V, Doumas M, Dupuis A, Venisse N, Engene PP, Veyrand B, Geny T, Marchand P, Le Bizec B, Bichon E, Carato P. Characterization of pregnant women exposure to halogenated parabens and bisphenols through water consumption. JOURNAL OF HAZARDOUS MATERIALS 2023; 448:130945. [PMID: 36758432 DOI: 10.1016/j.jhazmat.2023.130945] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 12/29/2022] [Accepted: 02/03/2023] [Indexed: 06/18/2023]
Abstract
Exposure of pregnant women to endocrine disruptor compounds, such as parabens and bisphenol A is of concern for fetal transition. Their halogenated degradation products, mainly coming from water treatment plans, could be problematic as well, depending on their occurrence in drinking water in the first place. Thus, 25 halogenated compounds were synthesised in order to investigate 60 substances (Bisphenols, parabens and their degradation products) in 325 drinking water samples coming from a French cohort study of pregnant women. Analysis was performed by tandem mass spectrometry coupled to gas chromatography (GC-MS/MS) after SPE extraction and derivation of the contaminants. Results indicate that parabens (methylparaben, n-propylparaben, ethylparaben and n-butylparaben), bisphenols S, A and F, and their degradation product, 4-hydroxybenzoic acid, were detected up to several hundred ng/L in drinking water, with detection frequencies between 16% and 88%. Regarding halogenated degradation products, the highest detection frequencies were found for monochlorinated products (about 50% for 2-chlorobisphenol A), which were quantified up to several tens of ng/L. Such analytical approaches with broader spectrum of monitoring (i.e. chemical hazards and their degradation products) constitute in the beginning of a solution to exhaustively answer the questions related to the characterization of the human chemical exposome.
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Affiliation(s)
- Marion Albouy
- Université de Poitiers, F-86000 Poitiers, France; Pole Biospharm Service de Santé Publique, CHU, Poitiers, France; CIC INSERM 1402, UFR Médecine Pharmacie, Poitiers, France.
| | | | - Virginie Migeot
- Université de Poitiers, F-86000 Poitiers, France; Pole Biospharm Service de Santé Publique, CHU, Poitiers, France; CIC INSERM 1402, UFR Médecine Pharmacie, Poitiers, France.
| | - Manon Doumas
- Université de Poitiers, F-86000 Poitiers, France; CIC INSERM 1402, UFR Médecine Pharmacie, Poitiers, France; IC2MP, CNRS 7285, UFR Médecine Pharmacie, Poitiers, France.
| | - Antoine Dupuis
- Université de Poitiers, F-86000 Poitiers, France; CIC INSERM 1402, UFR Médecine Pharmacie, Poitiers, France; Service de Pharmacie, CHU, Poitiers, France.
| | - Nicolas Venisse
- Université de Poitiers, F-86000 Poitiers, France; CIC INSERM 1402, UFR Médecine Pharmacie, Poitiers, France; Service de Toxicologie et Pharmacocinétique, CHU, Poitiers, France.
| | - Pascale Pierre Engene
- Université de Poitiers, F-86000 Poitiers, France; CIC INSERM 1402, UFR Médecine Pharmacie, Poitiers, France.
| | | | - Thomas Geny
- Oniris, INRAE, LABERCA, 44307 Nantes, France.
| | | | | | | | - Pascal Carato
- Université de Poitiers, F-86000 Poitiers, France; CIC INSERM 1402, UFR Médecine Pharmacie, Poitiers, France.
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Wei F, Cheng H, Sang N. Comprehensive assessment of estrogenic activities of parabens by in silico approach and in vitro assays. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 845:157194. [PMID: 35810903 DOI: 10.1016/j.scitotenv.2022.157194] [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: 05/12/2022] [Revised: 06/25/2022] [Accepted: 07/02/2022] [Indexed: 06/15/2023]
Abstract
Parabens are ubiquitous pollutants in the environment and humans due to their wide applications in food, pharmaceuticals, and personal care products. Although the estrogenic activity of some parabens has been confirmed, the underlying mechanisms and the structure-estrogenic activity relationship are still largely unclear. Here, we systematically used in silico and in vitro approaches to investigate the estrogenic potency of typical parabens, including methyl-, ethyl-, propyl-, iso-propyl-, butyl-, iso-butyl- and benzyl-paraben. Molecular dynamics simulations and binding free energy calculations were combined to investigate the atomic-level mechanism of paraben binding to estrogen receptors (ERs). Computational analysis showed that ER were the targets of tested parabens and kept a stable agonist conformation. The calculated total binding free energies suggested that van der Waals interactions were the major driving forces for paraben-ER interaction and correlated with the structure of paraben side chains. In in vitro assays, paraben with an aromatic side chain, benzyl-paraben, showed the strongest estrogenic activity at 0.01 μM and the EC50 at 0.796 ± 0.307 μM, on par with levels commonly detected in human organs. Among tested parabens with an alkyl side chain, the estrogenicity increased as the side chain length increased from 1 to 4, but no significant difference appeared between parabens with isomeric alkyl side chains (propyl- vs isopropyl and butyl- vs iso-butylparaben). The estrogenic activity of parabens was significantly related to the calculated binding energies (R2 = 0.94, p = 0.0012), depending on the side chains of parabens. Our findings provide a significant mechanism for parabens to disrupt estrogenic function and considerations for structural optimization from the perspective of environmental protection.
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Affiliation(s)
- Fang Wei
- College of Environment and Resource, Research Center of Environment and Health, Shanxi University, Taiyuan, Shanxi 030006, China; Department of Environmental Engineering, China Jiliang University, Hangzhou, Zhejiang 310018, China
| | - Hefa Cheng
- College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Nan Sang
- College of Environment and Resource, Research Center of Environment and Health, Shanxi University, Taiyuan, Shanxi 030006, China.
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Eco-friendly magnetic Solid-Phase extraction and deep eutectic solvent for the separation and detection of parabens from the environmental water and urine samples. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107330] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Herber CB, Yuan C, Chang A, Wang JC, Cohen I, Leitman DC. 2',3',4'-Trihydroxychalcone changes estrogen receptor α regulation of genes and breast cancer cell proliferation by a reprogramming mechanism. Mol Med 2022; 28:44. [PMID: 35468719 PMCID: PMC9036729 DOI: 10.1186/s10020-022-00470-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Accepted: 04/06/2022] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Menopausal hormone therapy (MHT) is recommended for only five years to treat vasomotor symptoms and vulvovaginal atrophy because of safety concerns with long-term treatment. We investigated the ability of 2',3',4'-trihydroxychalcone (2',3',4'-THC) to modulate estrogen receptor (ER)-mediated responses in order to find drug candidates that could potentially prevent the adverse effects of long-term MHT treatment. METHODS Transfection assays, real time-polymerase chain reaction, and microarrays were used to evaluate the effects of 2',3',4'-THC on gene regulation. Radioligand binding studies were used to determine if 2',3',4'-THC binds to ERα. Cell proliferation was examined in MCF-7 breast cancer cells by using growth curves and flow cytometry. Western blots were used to determine if 2',3',4'-THC alters the E2 activation of the MAPK pathway and degradation of ERα. Chromatin immunoprecipitation was used to measure ERα binding to genes. RESULTS The 2',3',4'-THC/E2 combination produced a synergistic activation with ERα on reporter and endogenous genes in human U2OS osteosarcoma cells. Microarrays identified 824 genes that we termed reprogrammed genes because they were not regulated in U2OS-ERα cells unless they were treated with 2',3',4'-THC and E2 at the same time. 2',3',4'-THC blocked the proliferation of MCF-7 cells by preventing the E2-induced activation of MAPK and c-MYC transcription. The antiproliferative mechanism of 2',3',4'-THC differs from selective estrogen receptor modulators (SERMs) because 2',3',4'-THC did not bind to the E2 binding site in ERα like SERMs. CONCLUSION Our study suggests that 2',3',4'-THC may represent a new class of ERα modulators that do not act as a direct agonists or antagonists. We consider 2',3',4'-THC to be a reprogramming compound, since it alters the activity of ERα on gene regulation and cell proliferation without competing with E2 for binding to ERα. The addition of a reprogramming drug to estrogens in MHT may offer a new strategy to overcome the adverse proliferative effects of estrogen in MHT by reprogramming ERα as opposed to an antagonist mechanism that involves blocking the binding of estrogen to ERα.
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Affiliation(s)
- Candice B Herber
- Department of Nutritional Sciences and Toxicology, University of California, Berkeley, CA, 94720-3104, USA
- DENALI Therapeutics, 161 Oyster Point Blvd, South San Francisco, CA, 94080, USA
| | - Chaoshen Yuan
- Department of Nutritional Sciences and Toxicology, University of California, Berkeley, CA, 94720-3104, USA
- Iaterion, University of California, QB3, 1700 4th Street Byers Hall, Suite 214, San Francisco, CA, 94158, USA
| | - Anthony Chang
- Department of Nutritional Sciences and Toxicology, University of California, Berkeley, CA, 94720-3104, USA
- Biomedical Sciences Program, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Jen-Chywan Wang
- Department of Nutritional Sciences and Toxicology, University of California, Berkeley, CA, 94720-3104, USA
| | - Isaac Cohen
- Iaterion, University of California, QB3, 1700 4th Street Byers Hall, Suite 214, San Francisco, CA, 94158, USA
| | - Dale C Leitman
- Department of Nutritional Sciences and Toxicology, University of California, Berkeley, CA, 94720-3104, USA.
- Iaterion, University of California, QB3, 1700 4th Street Byers Hall, Suite 214, San Francisco, CA, 94158, USA.
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Developing Eco-Friendly Skin Care Formulations with Microemulsions of Essential Oil. COSMETICS 2022. [DOI: 10.3390/cosmetics9020030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
With the rising public awareness of environmental issues, consumers are increasingly demanding skin care products that create less environmental impact but still provide the same or even greater efficacy. In the skin care arena, microemulsions have been receiving increased attention as the promising delivery technology of skin care actives. Essential oils such as peppermint oil, lavender oil and eucalyptus oil are purported to have excellent antioxidant and antimicrobial properties that could be used as the eco-friendly alternatives for synthetic antioxidants and preservatives in the skin care formulations. This work therefore seeks to develop eco-friendly skin care formulations based on microemulsions of essential oil. Peppermint oil, lavender oil and eucalyptus oil were used as the oil phase to formulate naringin-loaded microemulsions, which demonstrated similar or better antioxidant and antimicrobial properties compared to the synthetic ones. When formulated into gel form, naringin-loaded microemulsion-gel formulations showed enhanced stability and release profile over their unformulated counterpart. Hence, microemulsions of essential oil developed in this work conferred a 4-fold benefits to the skin care formulations: (1) improved release (membrane permeation) of skin care active, (2) improved stability of skin care active, (3) as an eco-friendly alternative to synthetic antioxidant, and (4) a self-preserving system.
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11
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Hager E, Chen J, Zhao L. Minireview: Parabens Exposure and Breast Cancer. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:1873. [PMID: 35162895 PMCID: PMC8834979 DOI: 10.3390/ijerph19031873] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Revised: 02/01/2022] [Accepted: 02/03/2022] [Indexed: 12/21/2022]
Abstract
There is increasing recognition that environmental exposure to chemicals, such as endocrine-disruptive chemicals (EDCs), contributes to the development of breast cancer. Parabens are a group of EDCs commonly found in personal care products, foods, and pharmaceuticals. Systemic exposure to parabens has been confirmed by the ubiquitous detection of parabens in human blood and urine samples. Although evidence from in vivo and epidemiological studies linking parabens exposure to breast cancer is limited, the current evidence suggests that parabens may negatively interfere with some endocrine and intracrine targets relevant to breast carcinogenesis. So far, most studies have focused on a single paraben's effects and the direct modulating effects on estrogen receptors or the androgen receptor in vitro. Recent studies have revealed that parabens can modulate local estrogen-converting enzymes, 17β-hydroxysteroid dehydrogenase 1 and 2 and increase local estrogen levels. Also, parabens can crosstalk with the human epidermal growth factor receptor 2 (HER2) pathway and work with ER signaling to increase pro-oncogenic c-Myc expression in ER+/HER2+ breast cancer cells. Future studies investigating paraben mixtures and their crosstalk with other EDCs or signaling pathways both in vitro and in vivo in the context of breast cancer development are warranted.
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Affiliation(s)
- Emily Hager
- Department of Nutrition, University of Tennessee, Knoxville, TN 37996, USA;
| | - Jiangang Chen
- Department of Public Health, University of Tennessee, Knoxville, TN 37996, USA
| | - Ling Zhao
- Department of Nutrition, University of Tennessee, Knoxville, TN 37996, USA;
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Bolujoko NB, Unuabonah EI, Alfred MO, Ogunlaja A, Ogunlaja OO, Omorogie MO, Olukanni OD. Toxicity and removal of parabens from water: A critical review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 792:148092. [PMID: 34147811 DOI: 10.1016/j.scitotenv.2021.148092] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 05/04/2021] [Accepted: 05/24/2021] [Indexed: 05/06/2023]
Abstract
Parabens are biocides used as preservatives in food, cosmetics and pharmaceuticals. They possess antibacterial and antifungal activity due to their ability to disrupt cell membrane and intracellular proteins, and cause changes in enzymatic activity of microbial cells. Water, one of our most valuable natural resource, has become a huge reservoir for parabens. Halogenated parabens from chlorination/ozonation of water contaminated with parabens have shown to be even more persistent in water than other types of parabens. Unfortunately, there is dearth of data on their (halogenated parabens) presence and fate in groundwater which serves as a major source of drinking water for a huge population in developing countries. An attempt to neglect the presence of parabens in water will expose man to it through ingestion of contaminated food and water. Although there are reviews on the occurrence, fate and behaviour of parabens in the environment, they largely omit toxicity and removal aspects. This review therefore, presents recent reports on the acute and chronic toxicity of parabens, their estrogenic agonistic and antagonistic activity and also their relationship with antimicrobial resistance. This article further X-rays several techniques that have been employed for the removal of parabens in water and their drawbacks including adsorption, biodegradation, membrane technology and advanced oxidation processes (AOPs). The heterogeneous photocatalytic process (one of the AOPs) appears to be more favoured for removal of parabens due to its ability to mineralize parabens in water. However, more work is needed to improve this ability of heterogeneous photocatalysts. Perspectives that will be relevant for future scientific studies and which will drive policy shift towards the presence of parabens in our drinking waters are also offered. It is hoped that this review will elicit some spontaneous actions from water professionals, scientists and policy makers alike that will provide more data, effective technologies, and adaptive policies that will address the growing threat of the presence of parabens in our environment with respect to human health.
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Affiliation(s)
- Nathaniel B Bolujoko
- Department of Chemical Sciences, Faculty of Natural Sciences, Redeemer's University, Ede, Nigeria; African Centre of Excellence for Water and Environmental Research (ACEWATER), Redeemer's University, PMB 230, Ede, Osun State, Nigeria
| | - Emmanuel I Unuabonah
- Department of Chemical Sciences, Faculty of Natural Sciences, Redeemer's University, Ede, Nigeria; African Centre of Excellence for Water and Environmental Research (ACEWATER), Redeemer's University, PMB 230, Ede, Osun State, Nigeria.
| | - Moses O Alfred
- Department of Chemical Sciences, Faculty of Natural Sciences, Redeemer's University, Ede, Nigeria; African Centre of Excellence for Water and Environmental Research (ACEWATER), Redeemer's University, PMB 230, Ede, Osun State, Nigeria
| | - Aemere Ogunlaja
- African Centre of Excellence for Water and Environmental Research (ACEWATER), Redeemer's University, PMB 230, Ede, Osun State, Nigeria; Department of Biological Sciences, Faculty of Natural Sciences, Redeemer's University, Ede, Nigeria
| | - Olumuyiwa O Ogunlaja
- African Centre of Excellence for Water and Environmental Research (ACEWATER), Redeemer's University, PMB 230, Ede, Osun State, Nigeria; Department of Chemical Sciences, Faculty of Basic Medical and Applied Sciences, Lead City University, Ibadan, Nigeria
| | - Martins O Omorogie
- Department of Chemical Sciences, Faculty of Natural Sciences, Redeemer's University, Ede, Nigeria; African Centre of Excellence for Water and Environmental Research (ACEWATER), Redeemer's University, PMB 230, Ede, Osun State, Nigeria
| | - Olumide D Olukanni
- African Centre of Excellence for Water and Environmental Research (ACEWATER), Redeemer's University, PMB 230, Ede, Osun State, Nigeria; Department of Biochemistry, Faculty of Basic Medical Sciences, Redeemer's University, Ede, Nigeria
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Pack EC, Lee HG, Jang DY, Sin HS, Kim TY, Kim HS, Lim KM, Choi DW. Probabilistic risk assessment of preservatives in dishwashing detergents and wet wipes for Korean consumers. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 782:146829. [PMID: 33838372 DOI: 10.1016/j.scitotenv.2021.146829] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 03/23/2021] [Accepted: 03/25/2021] [Indexed: 06/12/2023]
Abstract
Preservatives are essential additives in dishwashing detergents and wet wipes. Ensuring the safe use of preservatives in products is important for public health, as some preservatives are associated with health issues. In this study, the content of 12 preservatives in 105 dishwashing detergents and 105 wet wipes was determined, where these compounds are commonly found, among consumer products. A realistic exposure estimation was considered by using Korean consumer-specific exposure parameters for adults and babies. A probabilistic risk assessment was conducted by applying the Monte Carlo simulation method. Benzoic acid (41%) and cetylpyridinium chloride (30%) were the most commonly used preservatives in dishwashing detergents and wet wipes, respectively, although their content in different products (benzoic acid: 0.28-19.4 mg/g in dishwashing detergents; cetylpyridinium chloride: 0.003-0.64 mg/g in wet wipes) varied widely. The calculated median and upper-limit margin of safety (MOS) values related to systemic health effects and skin sensitization from exposure to preservatives largely exceeded the target MOS, which confirmed the safety of the products. Exposure to preservatives from wet wipes was several times higher in babies than in adults. Sensitivity analysis revealed that the amount of the product used, frequency of use, and weight fraction of the preservative were the major contributors to the exposure to preservatives from dishwashing detergents and wet wipes.
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Affiliation(s)
- Eun Chul Pack
- School of Health and Environmental Sciences, Korea University, Seoul, Republic of Korea
| | - Ho Geon Lee
- School of Health and Environmental Sciences, Korea University, Seoul, Republic of Korea; Department of Health and Safety Convergence Science, Transdisciplinary Major in Learning Health Systems, Graduate School, Korea University, Seoul, Republic of Korea
| | - Dae Yong Jang
- School of Health and Environmental Sciences, Korea University, Seoul, Republic of Korea; Department of Public Health Sciences, Graduate School, Korea University, Seoul, Republic of Korea
| | - Hui Sun Sin
- School of Health and Environmental Sciences, Korea University, Seoul, Republic of Korea; Department of Health and Safety Convergence Science, Transdisciplinary Major in Learning Health Systems, Graduate School, Korea University, Seoul, Republic of Korea
| | - Tae Yong Kim
- School of Health and Environmental Sciences, Korea University, Seoul, Republic of Korea; Department of Health and Safety Convergence Science, Transdisciplinary Major in Learning Health Systems, Graduate School, Korea University, Seoul, Republic of Korea
| | - Hyung Soo Kim
- School of Health and Environmental Sciences, Korea University, Seoul, Republic of Korea; Health Science Research Center, Korea University, Seoul, Republic of Korea
| | - Kyung Min Lim
- College of Pharmacy, Ewha Womans University, Seoul, Republic of Korea.
| | - Dal Woong Choi
- School of Health and Environmental Sciences, Korea University, Seoul, Republic of Korea; Department of Health and Safety Convergence Science, Transdisciplinary Major in Learning Health Systems, Graduate School, Korea University, Seoul, Republic of Korea.
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Wei F, Mortimer M, Cheng H, Sang N, Guo LH. Parabens as chemicals of emerging concern in the environment and humans: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 778:146150. [PMID: 34030374 DOI: 10.1016/j.scitotenv.2021.146150] [Citation(s) in RCA: 100] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 02/21/2021] [Accepted: 02/21/2021] [Indexed: 06/12/2023]
Abstract
Parabens are one of the most widely used preservatives in food, pharmaceuticals and personal care products (PCPs) because of their advantageous properties and low toxicity based on the early assessments. However, recent research indicates that parabens may act as endocrine-disrupting chemicals (EDCs) and thus, are considered as chemicals of emerging concern that have adverse human health effects. To provide the basis for future human health studies, we reviewed relevant literature, published between 2005 and 2020, regarding the levels of parabens in the consumer products (pharmaceuticals, PCPs and food), environmental matrices and humans, including susceptible populations, such as pregnant women and children. The analysis showed that paraben detection rates in consumer products, environmental compartments and human populations are high, while the levels vary greatly by country and paraben type. The concentrations of parabens reported in pregnant women (~20-120 μg/L) were an order of magnitude higher than in the general population. Paraben concentrations in food and pharmaceuticals were at the ng/g level, while the levels in PCPs reached mg/g levels. Environmental concentrations ranged from ng/L-μg/L in surface waters to tens of μg/g in wastewater and indoor dust. The levels of human exposure to parabens appear to be higher in the U.S. and EU countries than in China and India, which may change with the increasing production of parabens in the latter countries. The review provides context for future studies to connect paraben exposure levels with human health effects.
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Affiliation(s)
- Fang Wei
- College of Environment and Resource, Research Center of Environment and Health, Shanxi University, Taiyuan, Shanxi, China; Institute of Environmental and Health Sciences, China Jiliang University, Hangzhou, Zhejiang 310018, China
| | - Monika Mortimer
- Institute of Environmental and Health Sciences, China Jiliang University, Hangzhou, Zhejiang 310018, China
| | - Hefa Cheng
- College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Nan Sang
- College of Environment and Resource, Research Center of Environment and Health, Shanxi University, Taiyuan, Shanxi, China.
| | - Liang-Hong Guo
- Institute of Environmental and Health Sciences, China Jiliang University, Hangzhou, Zhejiang 310018, China.
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15
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Hajizadeh Y, Moradnia M, Kiani Feizabadi G, Rafiei N, Tahmasbizadeh M, Darvishmotevalli M, Fadaei S, Karimi H. The sex-specific association between maternal urinary paraben levels and offspring size at birth. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:36029-36038. [PMID: 33683593 DOI: 10.1007/s11356-021-13175-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 02/22/2021] [Indexed: 05/05/2023]
Abstract
Parabens are a group of antimicrobial preservatives applied in an extensive range of products and are suspected to impair fetal growth because of their disrupting effect on the endocrine system. We aimed to examine maternal urinary paraben concentrations and their neonates' outcome indexes. Methylparaben (MP), ethylparaben (EP), propylparaben (PP), and butylparaben (BP) concentrations were measured in 105 maternal urine samples collected before delivery. Length, weight, and head circumference at birth were extracted from the mothers' delivery files. A multivariable linear regression analysis was performed to evaluate the association between paraben levels and neonatal anthropometric indices. The median levels of urinary parabens, especially BP, were higher than those in other countries. Prenatal urinary concentration of MP and BP showed a significantly positive association with birth weight in all neonates (β = 0.79, 95% CI: 0.16, 1.41, and β = 8.56, 95% CI: 3.95, 13.17, respectively), while these chemicals showed a significant negative association with head circumference (β = - 0.002, 95% CI: - 0.004, - 0.000, and β = - 0.016, 95% CI: - 0.030, - 0.002, respectively). A significant positive association between MP and birth length was also found (β = 0.004, 95% CI: 0.00, 0.00) in all the neonates. In sex-stratified adjusted models, MP and BP were found to be associated, respectively, with higher birth length and weight in male neonates (β = 0.008, 95% CI: - 0.001, 0.017, and β = 7.948, 95% CI: 1.045, 14.851). In girls, maternal urinary MP, PP, and BP were associated with increased birth weight (β = 0.831, 95% CI: 0.043, 1.620; β = 4.178, 95% CI: 0.877, 7.480; and β = 10.821, 95% CI: 3.545, 18.097, respectively), and MP and BP were associated with reduced head circumference at birth (β = - 0.003, 95% CI: - 0.005, - 0.001, and β = - 0.035, 95% CI: - 0.055, - 0.016). These results revealed potential impacts between neonatal growth and maternal exposure to parabens. However, these findings should be interpreted while considering the limitations of the present study.
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Affiliation(s)
- Yaghoub Hajizadeh
- Environment Research Center, Research Institute for Primordial Prevention of Non-Communicable Disease, University of Medical Sciences, Isfahan, Iran
- Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Maryam Moradnia
- Student Research Committee, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Ghasem Kiani Feizabadi
- Student Research Committee, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran.
- Department of Environmental Health Engineering, School of Health, Semnan University of Medical Sciences, Semnan, Iran.
| | - Nasim Rafiei
- Department of Environmental Health Engineering, School of Health, Semnan University of Medical Sciences, Semnan, Iran
- Environment Research Center, Research Institute for Primordial Prevention of Non-Communicable Disease, University of Medical Sciences, Isfahan, Iran
| | - Masoumeh Tahmasbizadeh
- Student Research Committee, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohammad Darvishmotevalli
- Research Center for Health, Safety and Environment (RCHSE), Alborz University of Medical Sciences, Karaj, Iran
| | - Saeid Fadaei
- Student Research Committee, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Hossein Karimi
- Student Research Committee, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
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16
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Coogan PF, Rosenberg L, Palmer JR, Cozier YC, Lenzy YM, Bertrand KA. Hair product use and breast cancer incidence in the Black Women's Health Study. Carcinogenesis 2021; 42:924-930. [PMID: 34013957 PMCID: PMC8496025 DOI: 10.1093/carcin/bgab041] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 04/26/2021] [Accepted: 05/17/2021] [Indexed: 01/13/2023] Open
Abstract
Hair relaxers and leave-in conditioners and oils, commonly used by Black/African American women, may contain estrogens or estrogen-disrupting compounds. Thus, their use may contribute to breast cancer risk. Results of the few previous studies on this topic are inconsistent. We assessed the relation of hair relaxer and leave-in conditioner use to breast cancer incidence in the Black Women's Health Study, a nationwide prospective study of Black women. Among 50 543 women followed from 1997 to 2017, 2311 incident breast cancers occurred. Multivariable-adjusted hazard ratios (HRs) and 95% confidence intervals (CIs) were calculated using Cox proportional hazards regression for breast cancer overall and by estrogen receptor (ER) status. For heavy use (≥15 years of use for ≥7 times/year) of hair relaxers relative to never/light use (<4 years, no more than 1-2 times/year), the multivariable HR for breast cancer overall was 1.13 (95%CI: 0.96-1.33). Duration, frequency, age at first use and number of scalp burns were not associated with overall breast cancer risk. For heavy use of hair relaxers containing lye, the corresponding HR for ER+ breast cancer was 1.32 (95% CI: 0.97, 1.80); there was no association for non-lye products. There was no association of conditioner use and breast cancer. Results of this study were largely null, but there was some evidence that heavy use of lye-containing hair relaxers may be associated with increased risk of ER+ breast cancer. Consistent results from several studies are needed before it can be concluded that use of certain hair relaxers impacts breast cancer development.
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Affiliation(s)
- Patricia F Coogan
- Slone Epidemiology Center at Boston
University, Boston, MA, USA,To whom correspondence should be addressed. Tel: +001 617 206
6180; Fax: +001 617 738 5119;
| | - Lynn Rosenberg
- Slone Epidemiology Center at Boston
University, Boston, MA, USA
| | - Julie R Palmer
- Slone Epidemiology Center at Boston
University, Boston, MA, USA
| | - Yvette C Cozier
- Slone Epidemiology Center at Boston
University, Boston, MA, USA
| | - Yolanda M Lenzy
- Lenzy Dermatology and Hair Loss Center,
Chicopee, MA, USA,UConn Health Dermatology,
Farmington, CT, USA
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Kiani Feizabadi G, Hajizadeh Y, Feizi A, Ebrahimpour K. Urinary concentrations of parabens amongst Iranian adults and their associations with socio-demographic factors. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2020; 18:1227-1238. [PMID: 33312637 PMCID: PMC7721947 DOI: 10.1007/s40201-020-00540-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Accepted: 09/09/2020] [Indexed: 05/14/2023]
Abstract
BACKGROUND Parabens are widely used to prevent organism growth and increase the shelf life of foods, medicines and personal care products (PCPs). Recent studies indicate their potentially harmful effects on human health. There is no information on the extent of exposure to parabens among Iranians. METHODS We measured the concentration of urinary methylparaben (MP), ethylparaben (EP), propylparaben (PP) and butylparaben (BP) among Iranian adults and calculated their estimated daily intake (EDI). Also, association between the level of urinary parabens with socio-demographic and lifestyle variables were investigated. RESULTS Detection frequencies of MP, EP, PP, and BP were 98.9, 91, 94.3, and 88.2%, and their median urinary concentrations were 69.06, 9.10, 12.4, and 9.87 µg/l, respectively. Urinary parabens were higher in females, and the difference in the concentration of MP and PP was significant. A significantly positive correlation between MP and PP (r = 0.638) and a moderate to a weak correlation between other parabens were observed. There was a significantly negative weak correlation between age and MP, BP and PP. There was also a significant association between different age groups and MP, BP and PP as well as different BMI values and MP. The highest EDI value belonged to MP in the female group. Despite being lower than the acceptable daily intake (ADI), its value was higher than that reported in other countries (except the US). CONCLUSIONS Our findings indicated that Iranians are widely exposed to the parabens and the range of exposure was associated with socio-demographic factors. These results could serve as a basis for assessing the risk of exposure to parabens amongst Iranians.
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Affiliation(s)
- Ghasem Kiani Feizabadi
- Student Research Committee, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
- Department of Environmental Health Engineering, School of Health, Semnan University of Medical Sciences, Semnan, Iran
| | - Yaghoub Hajizadeh
- Environment Research Center, Research Institute for Primordial Prevention of Non-communicable Diseases, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Awat Feizi
- Department of Biostatistics and Epidemiology, School of Health, and Psychosomatic Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Karim Ebrahimpour
- Environment Research Center, Research Institute for Primordial Prevention of Non-communicable Diseases, Isfahan University of Medical Sciences, Isfahan, Iran
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18
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Zhu H, Kannan K. Parabens in stretch mark creams: A source of exposure in pregnant and lactating women. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 744:141016. [PMID: 32755791 DOI: 10.1016/j.scitotenv.2020.141016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 07/13/2020] [Accepted: 07/14/2020] [Indexed: 06/11/2023]
Abstract
Parabens are widely used as antimicrobial preservatives in personal care products (PCPs). Stretch mark cream is widely used by pregnant and lactating women for the treatment of striae gravidarum. This can be a potential source of paraben exposure, not only to pregnant/lactating women but also to fetuses/newborns. Little is known, however, with regard to the occurrence of parabens in stretch mark creams. In this study, we analyzed eight parabens and their metabolites in 31 popular stretch mark creams originated from various countries including China. The concentrations of Σparaben (sum of eight parabens/metabolites) ranged from 0.007 to 1630 μg/g, with mean and median values of 453 and 273 μg/g, respectively. Methyl- and propyl-parabens accounted for >95% of Σparaben concentrations. We examined the measured paraben concentrations against ingredients listed on the product labels. Parabens were listed as ingredients in those creams that contained concentrations >100 μg/g except for four samples with such high concentrations. Six cream samples that were labeled 'paraben-free' contained trace levels (0.007-9.92 μg/g) of these preservatives. Mean dermal ∑paraben exposure dose from the use of stretch mark creams (30.6 μg/kg bw/day) was well below the current acceptable daily intake value (5 mg/kg bw/day). In comparison to diet and indoor dust ingestion pathways, paraben-laden stretch mark cream may be a major source of paraben exposure in pregnant and lactating women. This study provides information on parabens and other preservatives in stretch mark creams and measures to reduce exposures during pregnancy and lactation.
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Affiliation(s)
- Hongkai Zhu
- Department of Pediatrics, Department of Environmental Medicine, New York University School of Medicine, New York, NY 10016, United States
| | - Kurunthachalam Kannan
- Department of Pediatrics, Department of Environmental Medicine, New York University School of Medicine, New York, NY 10016, United States.
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19
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Kiani Feizabadi G, Hajizadeh Y, Feizi A, Ebrahimpour K. Urinary Concentrations of Parabens in a Population of Iranian Adolescent and Their Association with Sociodemographic Indicators. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2020; 79:195-207. [PMID: 32572517 DOI: 10.1007/s00244-020-00746-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 06/05/2020] [Indexed: 05/22/2023]
Abstract
Parabens are widely used as preservatives in personal care products, foodstuffs, and pharmaceuticals. Concerns have been raised regarding the potential endocrine disruption effects of parabens. In the present study, the urinary concentration of four common parabens, including methylparaben (MP), ethylparaben (EP), propylparaben (PP), and butylparaben (BP), in 100 Iranian adolescents randomly referring to health services centres were analyzed using GC/MS. The association of sociodemographic and lifestyle variables, collected through questionnaire, with the concentration of parabens also were studied. Median concentrations of MP, EP, PP, and BP were 92.21, 8.46, 12.26, and 8.42 µg/g creatinine, respectively. There was a strong positive significant correlation between MP and PP (r = 0.694) and moderate to a weak correlation between the other parabens. The concentration of urinary MP in females was significantly higher than those in male (p = 0.021). There was a significant negative association between different BMI groups and MP and EP. There also was a positive significant association between the MP and age, and between MP, EP, and PP, and tobacco use. Although the estimated daily intake of the parabens was lower than the Acceptable Daily Intake, it was higher than those reported in other countries. This confirms the widespread exposure of Iranian adolescents to the paraben compounds and their association with sociodemographic factors. This was the first study reporting the urinary parabens level in Iranian adolescents, and the data can be used as a basis for assessing the risk of exposure to parabens in the Iranian population in future studies.
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Affiliation(s)
- Ghasem Kiani Feizabadi
- Student Research Committee, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
- Department of Environmental Health Engineering, School of Health, Semnan University of Medical Sciences, Semnan, Iran
| | - Yaghoub Hajizadeh
- Environment Research Center, Research Institute for Primordial Prevention of Non-Communicable Diseases, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Awat Feizi
- Department of Biostatistics and Epidemiology, School of Health, and Psychosomatic Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Karim Ebrahimpour
- Environment Research Center, Research Institute for Primordial Prevention of Non-Communicable Diseases, Isfahan University of Medical Sciences, Isfahan, Iran
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Cherian P, Zhu J, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD, Liebler DC, Marks JG, Shank RC, Slaga TJ, Snyder PW, Heldreth B. Amended Safety Assessment of Parabens as Used in Cosmetics. Int J Toxicol 2020; 39:5S-97S. [DOI: 10.1177/1091581820925001] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The Expert Panel for Cosmetic Ingredient Safety (Panel) assessed the safety of 21 parabens as preservatives in cosmetic products. All of these ingredients are reported to function in cosmetics as preservatives; however, 5 are reported to also function as fragrance ingredients. The Panel reviewed relevant data relating to the safety of these ingredients under the reported conditions of use in cosmetic formulations. The Panel concluded that 20 of the 21 parabens included in this report are safe in cosmetics in the present practices of use and concentration described in this safety assessment when the sum of the total parabens in any given formulation does not exceed 0.8%. However, the available data are insufficient to support a conclusion of safety for benzylparaben in cosmetics.
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Affiliation(s)
- Priya Cherian
- Cosmetic Ingredient Review Scientific Analyst/Writer, Washington, DC, USA
| | - Jinqiu Zhu
- Cosmetic Ingredient Review Toxicologist, Washington, DC, USA
| | - Wilma F. Bergfeld
- Expert Panel for Cosmetic Ingredient Safety Member, Washington, DC, USA
| | - Donald V. Belsito
- Expert Panel for Cosmetic Ingredient Safety Member, Washington, DC, USA
| | - Ronald A. Hill
- Former Expert Panel for Cosmetic Ingredient Safety Member, Washington, DC, USA
| | | | - Daniel C. Liebler
- Expert Panel for Cosmetic Ingredient Safety Member, Washington, DC, USA
| | - James G. Marks
- Expert Panel for Cosmetic Ingredient Safety Member, Washington, DC, USA
| | - Ronald C. Shank
- Expert Panel for Cosmetic Ingredient Safety Member, Washington, DC, USA
| | - Thomas J. Slaga
- Expert Panel for Cosmetic Ingredient Safety Member, Washington, DC, USA
| | - Paul W. Snyder
- Cosmetic Ingredient Review Toxicologist, Washington, DC, USA
| | - Bart Heldreth
- Cosmetic Ingredient Review Executive Director, Washington, DC, USA
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Iribarne-Durán LM, Domingo-Piñar S, Peinado FM, Vela-Soria F, Jiménez-Díaz I, Barranco E, Olea N, Freire C, Artacho-Cordón F, Ocón-Hernández O. Menstrual blood concentrations of parabens and benzophenones and related factors in a sample of Spanish women: An exploratory study. ENVIRONMENTAL RESEARCH 2020; 183:109228. [PMID: 32062483 DOI: 10.1016/j.envres.2020.109228] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 01/27/2020] [Accepted: 02/03/2020] [Indexed: 06/10/2023]
Abstract
AIM To evaluate concentrations of parabens (PBs) and benzophenones (BzPs) in menstrual blood and explore related sociodemographic/lifestyle factors, and to compare between menstrual and peripheral blood concentrations in a subset of samples. MATERIAL AND METHODS Concentrations of 4 PBs [methyl- (MeP), ethyl- (EtP), propyl- (PrP) and butyl-paraben (BuP)] and 6 BzPs [BzP-1, BzP-2, BzP-3, BzP-6, BzP-8 and 4-OH-BzP] were determined in menstrual blood from 57 women and in both menstrual and peripheral blood samples from 12 women, all healthy Spanish women of reproductive age. Socio-demographic characteristics and lifestyle habits [diet and use of cosmetics and personal care products (PCPs)] were gathered using an online questionnaire. Spearman correlation analysis was performed to examine the relationship between menstrual and peripheral blood concentrations, while multivariable linear regression was used to identify potential explanatory variables for menstrual PB and BzP concentrations. RESULTS Globally, all menstrual blood samples had detectable levels of ≥3 compounds, and 52.6% of the samples contained ≥6 compounds. MeP, PrP, and BzP-3 were the most frequently detected compounds (detection frequencies >90.0%), with median concentrations of 1.41, 0.63, and 1.70 ng/mL of menstrual blood, respectively. Age, the use of PCPs, and consumption of some food items (meat, pasta, cheese, or dairy products) were related to the menstrual blood concentrations of some PBs/BzPs. Serum:menstrual blood ratios of PBs/BzPs ranged from 1.7 to 3.6, with no inter-matrix correlations. CONCLUSIONS This study reveals, to our knowledge for the first time, the widespread presence of several PBs and BzPs in intimate contact with gynecological tissues, although their concentrations in menstrual blood were not correlated with those in peripheral blood from the same women. These results shed light on the information provided by the menstrual blood as a potential matrix for characterizing exposure to PBs and BzPs, whose consequences for women's reproductive health need to be addressed.
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Affiliation(s)
- L M Iribarne-Durán
- Instituto de Investigación Biosanitaria (ibs. GRANADA), Granada, Spain; University of Granada, Radiology and Physical Medicine Department, Granada, Spain
| | - S Domingo-Piñar
- Obstetrics and Gynecology Service. Hospital of Guadix, Granada, Spain
| | - F M Peinado
- Instituto de Investigación Biosanitaria (ibs. GRANADA), Granada, Spain; University of Granada, Radiology and Physical Medicine Department, Granada, Spain
| | - F Vela-Soria
- Instituto de Investigación Biosanitaria (ibs. GRANADA), Granada, Spain.
| | - I Jiménez-Díaz
- Instituto de Investigación Biosanitaria (ibs. GRANADA), Granada, Spain
| | - E Barranco
- University of Granada, Department of Obstetrics and Gynecology, Granada, Spain
| | - N Olea
- Instituto de Investigación Biosanitaria (ibs. GRANADA), Granada, Spain; University of Granada, Radiology and Physical Medicine Department, Granada, Spain; CIBER de Epidemiología y Salud Pública (CIBERESP), Spain
| | - C Freire
- Instituto de Investigación Biosanitaria (ibs. GRANADA), Granada, Spain; CIBER de Epidemiología y Salud Pública (CIBERESP), Spain
| | - F Artacho-Cordón
- Instituto de Investigación Biosanitaria (ibs. GRANADA), Granada, Spain; University of Granada, Radiology and Physical Medicine Department, Granada, Spain; CIBER de Epidemiología y Salud Pública (CIBERESP), Spain.
| | - O Ocón-Hernández
- Instituto de Investigación Biosanitaria (ibs. GRANADA), Granada, Spain; Obstetrics and Gynecology Service. San Cecilio University Hospital, Granada, Spain
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22
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Nguyen VK, Kahana A, Heidt J, Polemi K, Kvasnicka J, Jolliet O, Colacino JA. A comprehensive analysis of racial disparities in chemical biomarker concentrations in United States women, 1999-2014. ENVIRONMENT INTERNATIONAL 2020; 137:105496. [PMID: 32113086 PMCID: PMC7137529 DOI: 10.1016/j.envint.2020.105496] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 01/09/2020] [Accepted: 01/14/2020] [Indexed: 05/11/2023]
Abstract
BACKGROUND Stark racial disparities in disease incidence among American women remain a persistent public health challenge. These disparities likely result from complex interactions between genetic, social, lifestyle, and environmental risk factors. The influence of environmental risk factors, such as chemical exposure, however, may be substantial and is poorly understood. OBJECTIVES We quantitatively evaluated chemical-exposure disparities by race/ethnicity, life stage, and time in United States (US) women (n = 38,080) by using biomarker data for 143 chemicals from the National Health and Nutrition Examination Survey (NHANES) 1999-2014. METHODS We applied a series of survey-weighted, generalized linear models using data from the entire NHANES women population along with cycle and age-group stratified subpopulations. The outcome was chemical biomarker concentration, and the main predictor was race/ethnicity with adjustment for age, socioeconomic status, smoking habits, and NHANES cycle. RESULTS Compared to non-Hispanic White women, the highest disparities were observed for non-Hispanic Black, Mexican American, Other Hispanic, and Other Race/Multi-Racial women with higher levels of pesticides and their metabolites, including 2,5-dichlorophenol, o,p'-DDE, beta-hexachlorocyclohexane, and 2,4-dichlorophenol, along with personal care and consumer product compounds, including parabens and monoethyl phthalate, as well as several metals, such as mercury and arsenic. Moreover, for Mexican American, Other Hispanic, and non-Hispanic black women, there were several exposure disparities that persisted across age groups, such as higher 2,4- and 2,5-dichlorophenol concentrations. Exposure levels for methyl and propyl parabens, however, were the highest in non-Hispanic black compared to non-Hispanic white children with average differences exceeding 4-fold. Exposure disparities for methyl and propyl parabens are increasing over time in Other Race/Multi-Racial women while fluctuating for non-Hispanic Black, Mexican American, and Other Hispanic. Cotinine levels are among the highest in Non-Hispanic White women compared to Mexican American and Other Hispanic women with disparities plateauing and increasing, respectively. DISCUSSION We systematically evaluated differences in chemical exposures across women of various race/ethnic groups and across age groups and time. Our findings could help inform chemical prioritization in designing epidemiological and toxicological studies. In addition, they could help guide public health interventions to reduce environmental and health disparities across populations.
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Affiliation(s)
- Vy Kim Nguyen
- Department of Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, USA; Department of Computational Medicine and Bioinformatics, Medical School, University of Michigan, Ann Arbor, MI, USA
| | - Adam Kahana
- Department of Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - Julien Heidt
- Department of Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - Katelyn Polemi
- Department of Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - Jacob Kvasnicka
- Department of Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - Olivier Jolliet
- Department of Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, USA; Center for Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI, USA
| | - Justin A Colacino
- Department of Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, USA; Center for Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI, USA; Department of Nutritional Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, USA; Rogel Cancer Center, University of Michigan, Ann Arbor, MI, USA.
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Abstract
Cosmetic products are used in large quantities across the world. An increasing number of chemical compounds are being added to the formulation of cosmetic products as additives, fragrances, preservatives, stabilizers, surfactants, dye and shine to potentiate their quality, property and shelf life. Owing to their widespread use, active residues of cosmetic products are continuously introduced into the environment in several ways. Many of these chemicals are bioactive and are characterized by potential bioaccumulation ability and environmental persistence, thus exerting a major risk to humans and the health of ecosystems. Hence, the indiscriminate consumption of cosmetics may present a looming issue with significant adverse impacts on public health. This review intends to spotlight a current overview of toxic ingredients used in formulating cosmetics such as parabens, triclosan, benzalkonium chloride, 1,4-dioxane, plastic microbeads, formaldehyde, diazolidinyl urea, imidazolidinyl urea, sunscreen elements (organic and inorganic UV filters) and trace metals. Specific focus is given to illustrate the biological risks of these substances on human health and aquatic system in terms of genotoxicity, cytotoxicity, neurotoxicity mutagenicity, and estrogenicity. In addition to conclusive remarks, future directions are also suggested.
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24
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The correlation between ROS generation and LPO process as the function of methylparaben concentrations during hemoglobin fructation. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2020. [DOI: 10.1007/s13738-020-01852-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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25
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Rylander C, Veierød MB, Weiderpass E, Lund E, Sandanger TM. Use of skincare products and risk of cancer of the breast and endometrium: a prospective cohort study. Environ Health 2019; 18:105. [PMID: 31796030 PMCID: PMC6889352 DOI: 10.1186/s12940-019-0547-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 11/22/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Concerns have been raised that extensive use of personal care products that contain endocrine disrupting compounds increase the risk of hormone sensitive cancers. OBJECTIVE To assess the effect of skincare product use on the risk of pre- and postmenopausal breast cancer, estrogen receptor positive (ER+) and negative (ER-) breast cancer and cancer of the endometrium. METHODS We used data from 106,978 participants in the population-based Norwegian Women and Cancer cohort. Participants were categorized into non-, light, moderate, frequent and heavy users of skincare products based on self-reported use of hand and facial cream and body lotion. Cancer incidence information from the Cancer Registry of Norway was linked to individual data through the unique identity number of Norwegian citizens. Multivariable Cox proportional hazard regression was used to assess the effect of skincare product use on the risk of cancer of the breast and endometrium. We used multiple imputation by chained equations to evaluate the effect of missing data on observed associations. RESULTS We found no associations between use of skincare products and incidence of premenopausal breast cancer (frequent/heavy versus non-/light use: hazard ratio [HR] =1.10, 95% confidence interval [CI]: 0.92-1.32), postmenopausal breast cancer (heavy versus light use: HR = 0.87, 95% CI: 0.65-1.18, frequent versus light use: HR = 0.97, 95% CI: 0.88, 1.07) or endometrial cancer (frequent/heavy versus non-/light use: HR = 0.97, 95% CI: 0.79-1.20). Use of skincare products did not increase the risk of ER+ or ER- breast cancer and there was no difference in effect across ER status (0.58 ≤ pheterogeneity ≤ 0.99). The magnitude and direction of the effect estimates based on complete case analyses and multiple imputation were similar. CONCLUSION Heavy use of skincare products, i.e. creaming the body up to two times per day during mid-life, did not increase the risk of cancer of the breast or endometrium.
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Affiliation(s)
- Charlotta Rylander
- Department of Community Medicine, UiT The Arctic University of Norway, Tromsø, Norway.
| | - Marit B Veierød
- Oslo Centre for Biostatistics and Epidemiology, Department of Biostatistics, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Elisabete Weiderpass
- International Agency for Research on Cancer, World Health Organization, Lyon, France
| | - Eiliv Lund
- Department of Community Medicine, UiT The Arctic University of Norway, Tromsø, Norway
- Department of Research, Cancer Registry of Norway, Institute of Population-Based Cancer Research, Oslo, Norway
| | - Torkjel M Sandanger
- Department of Community Medicine, UiT The Arctic University of Norway, Tromsø, Norway
- NILU, FRAM-High North Research Centre for Climate and Environment, Tromsø, Norway
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Thong T, Forté CA, Hill EM, Colacino JA. Environmental exposures, stem cells, and cancer. Pharmacol Ther 2019; 204:107398. [PMID: 31376432 PMCID: PMC6881547 DOI: 10.1016/j.pharmthera.2019.107398] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 07/29/2019] [Indexed: 12/19/2022]
Abstract
An estimated 70-90% of all cancers are linked to exposure to environmental risk factors. In parallel, the number of stem cells in a tissue has been shown to be a strong predictor of risk of developing cancer in that tissue. Tumors themselves are characterized by an acquisition of "stem cell" characteristics, and a growing body of evidence points to tumors themselves being sustained and propagated by a stem cell-like population. Here, we review our understanding of the interplay between environmental exposures, stem cell biology, and cancer. We provide an overview of the role of stem cells in development, tissue homeostasis, and wound repair. We discuss the pathways and mechanisms governing stem cell plasticity and regulation of the stem cell state, and describe experimental methods for assessment of stem cells. We then review the current understanding of how environmental exposures impact stem cell function relevant to carcinogenesis and cancer prevention, with a focus on environmental and occupational exposures to chemical, physical, and biological hazards. We also highlight key areas for future research in this area, including defining whether the biological basis for cancer disparities is related to effects of complex exposure mixtures on stem cell biology.
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Affiliation(s)
- Tasha Thong
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI 48109, USA
| | - Chanese A Forté
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI 48109, USA; Michigan Institute for Computational Discovery and Engineering, University of Michigan, Ann Arbor, MI 48109, USA
| | - Evan M Hill
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI 48109, USA
| | - Justin A Colacino
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI 48109, USA; Department of Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, MI 48109, USA; Center for Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI 48109, USA.
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Dogan S, Tongur T, Erkaymaz T, Erdogan G, Unal B, Sik B, Simsek T. Traces of intact paraben molecules in endometrial carcinoma. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:31158-31165. [PMID: 31463755 DOI: 10.1007/s11356-019-06228-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 08/16/2019] [Indexed: 06/10/2023]
Abstract
Endometrial carcinoma is the most commonly encountered gynecological cancer in women worldwide and is also one of the popular models of the hormone-dependent carcinomas. This study was aimed to evaluate and compare the concentrations of five paraben molecules (methylparaben, ethylparaben, N-propylparaben, benzylparaben, isobutylparaben + N-butylparaben) in the endometrial and myometrial tissue samples of patients diagnosed with endometrial carcinoma and benign gynecologic diseases. A total of 88 patients were included in the study and chemical analysis was performed on 176 tissue samples. The study group comprised of 33 patients with endometrial carcinoma and 6 patients with endometrial intraepithelial neoplasia. The control group comprised of 49 patients. One endometrial and one myometrial tissue samples were collected from each patient. The analyses were performed using ultrahigh-performance liquid chromatography and tandem mass spectrometry (UHPLC-MS/MS). At least one type of paraben molecule was detected in 23.07% (9/39) of the patients in the study group, and in 2.04% (1/49) of the patients in the control group; this difference between the groups was statistically significant (p = .002). N-Propylparaben and isobutyl + N-butylparaben were the most frequently detected (in 7/10 of the samples) paraben molecules in the study. Tumor characteristics (tumor diameter, myometrial invasion, architectural grade, nuclear grade, lymphovascular space invasion, and tumor stage) were comparable between the two groups of endometrial carcinoma (paraben-detected and paraben-undetected groups). In conclusion, paraben molecules were more frequently detected in the endometrial carcinoma tissue samples than in the normal endometrium.
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Affiliation(s)
- Selen Dogan
- Department of Gynecologic Oncology, Antalya Training and Research Hospital, Antalya, Turkey.
| | - Timur Tongur
- Food Safety and Research Institute, Akdeniz University, Antalya, Turkey
| | - Taner Erkaymaz
- Food Safety and Research Institute, Akdeniz University, Antalya, Turkey
| | - Gulgun Erdogan
- Department of Pathology, Akdeniz University, Antalya, Turkey
| | - Betul Unal
- Department of Pathology, Akdeniz University, Antalya, Turkey
| | - Bulent Sik
- Food Safety and Research Institute, Akdeniz University, Antalya, Turkey
| | - Tayup Simsek
- Department of Gynecologic Oncology, Akdeniz University, Antalya, Turkey
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Parada H, Gammon MD, Ettore HL, Chen J, Calafat AM, Neugut AI, Santella RM, Wolff MS, Teitelbaum SL. Urinary concentrations of environmental phenols and their associations with breast cancer incidence and mortality following breast cancer. ENVIRONMENT INTERNATIONAL 2019; 130:104890. [PMID: 31228785 PMCID: PMC6679996 DOI: 10.1016/j.envint.2019.05.084] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 05/15/2019] [Accepted: 05/31/2019] [Indexed: 05/22/2023]
Abstract
BACKGROUND Environmental phenols, compounds used widely in personal care and consumer products, are known endocrine disruptors. Few epidemiologic studies have examined the association of phenol biomarkers with breast cancer incidence and, to our knowledge, none have considered associations with mortality following breast cancer. We examined seven urinary phenol biomarkers in association with breast cancer incidence and subsequent mortality, and examined effect measure modification by body mass index (BMI). METHODS Participants included 711 women with breast cancer and 598 women without breast cancer who were interviewed for the population-based Long Island Breast Cancer Study Project. Among women with breast cancer, phenol biomarkers were quantified in spot urine samples collected on average within three months of a first diagnosis of primary in situ or invasive breast cancer in 1996-1997. Women with breast cancer were monitored for vital status using the National Death Index. After a median follow-up of 17.6 years, we identified 271 deaths, including 98 deaths from breast cancer. We examined creatinine-corrected phenol concentrations and the sum of parabens (Σparabens) in association with breast cancer incidence using logistic regression to estimate odds ratios (ORs) and 95% confidence intervals (CIs), and with mortality using Cox regression to estimate hazard ratios (HRs) and 95% CIs. We evaluated multiplicative effect measure modification using cross-product terms in nested models. RESULTS The highest (vs lowest) quintiles of urinary methylparaben, propylparaben, and Σparabens were associated with risk of breast cancer with ORs ranging from 1.31 to 1.50. Methylparaben, propylparaben, and Σparabens were also associated with all-cause mortality HRs ranging from 0.68 to 0.77. Associations for breast cancer incidence were more pronounced among women with BMI < 25.0 kg/m2 than among women with BMI ≥ 25.0 kg/m2; however, associations for mortality were more pronounced among women with BMI ≥ 25 kg/m2 than among women with BMI < 25 kg/m2. CONCLUSIONS Select parabens may have differential associations with risk of developing breast cancer and mortality following breast cancer.
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Affiliation(s)
- Humberto Parada
- Division of Epidemiology and Biostatistics, School of Public Health, San Diego State University, San Diego, CA, USA; Moores Cancer Center, University of California, San Diego, La Jolla, CA, USA.
| | - Marilie D Gammon
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
| | - Hope L Ettore
- Division of Epidemiology and Biostatistics, School of Public Health, San Diego State University, San Diego, CA, USA.
| | - Jia Chen
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
| | | | - Alfred I Neugut
- Department of Medicine, Vagelos College of Physicians and Surgeons and Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA.
| | - Regina M Santella
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA.
| | - Mary S Wolff
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
| | - Susan L Teitelbaum
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
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Shin MY, Shin C, Choi JW, Lee J, Lee S, Kim S. Pharmacokinetic profile of propyl paraben in humans after oral administration. ENVIRONMENT INTERNATIONAL 2019; 130:104917. [PMID: 31234001 DOI: 10.1016/j.envint.2019.104917] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 06/08/2019] [Accepted: 06/09/2019] [Indexed: 05/24/2023]
Abstract
Parabens are commonly used as antimicrobial preservatives in consumer products. Because of their possible endocrine-disrupting activities, their safety has become a public concern. Although pharmacokinetic studies on parabens have been conducted in animals, limited information exists on their pharmacokinetic profiles in humans. In the present study, we determined the pharmacokinetic characteristics of propyl paraben (PP) in humans following a single oral administration of 0.6 mg/kg bw of deuterium labeled-PP. We also conducted experiment with similar design but different exposure amount (2.5 mg/kg bw) to verify the validity of the model to be developed. Blood and urine were collected at several intervals over the course of 48 h to measure levels of PP and its metabolites (conjugates and hydrolysates) in 12 male volunteers. The unconjugated parent compound (free PP), glucuronide and sulfate conjugates, p-hydroxybenzoic acid, and p-hydroxyhippuric acid were measured using HPLC-MS/MS. It was found that PP was rapidly absorbed via ingestion within 2 h and quickly eliminated (terminal half-life, 2.9 h). The fraction of administered dose excreted in the urine was 0.05% for free PP, 8.6% for total PP (free + conjugates), 23.2% for p-hydroxyhippuric acid, and 7.0% for p-hydroxybenzoic acid. Utilizing this pharmacokinetic profile, we successfully constructed a multi-compartment model where the disposition of PP was well described with two compartments and that of its metabolites was explained with first-order reactions. The present pharmacokinetic model provides insights into the kinetic properties of the disposition of PP and its metabolites in humans, and it can be used for risk assessment with biomonitoring of PP.
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Affiliation(s)
- Mi-Yeon Shin
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Chorong Shin
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Jeong Weon Choi
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Jangwoo Lee
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Seungho Lee
- Department of Occupational and Environmental Medicine, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Sungkyoon Kim
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea; Institute of Health and Environment, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea.
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Gal A, Gedye K, Craig ZR, Ziv-Gal A. Propylparaben inhibits mouse cultured antral follicle growth, alters steroidogenesis, and upregulates levels of cell-cycle and apoptosis regulators. Reprod Toxicol 2019; 89:100-106. [PMID: 31306770 DOI: 10.1016/j.reprotox.2019.07.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 07/08/2019] [Accepted: 07/11/2019] [Indexed: 12/19/2022]
Abstract
Propylparaben is prevalently used in cosmetics, pharmaceuticals, and foods; yet, its direct effects on the mammalian ovary are unknown. We investigated the direct effects of propylparaben on the growth and steroidogenic function of mouse antral follicles. Antral follicles were isolated from the ovaries of Swiss mice (age: 32-42 days) and cultured in media with dimethylsulfoxide vehicle control or propylparaben (0.01-100 μg/mL) for 24-72 h. Follicle diameter was measured every 24 h to assess growth. Follicles and media were collected at 24 and 72 h for gene expression and hormone measurements. Propylparaben (100 μg/mL) significantly inhibited follicle growth (48-72 h). Further, propylparaben exposure increased expression of cell cycle regulators (Cdk4, Cdkn1a), an apoptotic factor (Bax), and a key steroidogenic regulator (Star). In media, propylparaben decreased accumulation of dehydroepiandrosterone-sulfate, but increased testosterone and 17β-estradiol. Overall, our findings suggest that propylparaben disrupts antral follicle growth and steroidogenic function by altering the cell-cycle, apoptosis, and steroidogenesis pathways.
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Affiliation(s)
- Arnon Gal
- Department of Veterinary Clinical Medicine, University of Illinois, Urbana, IL, USA.
| | - Kristene Gedye
- School of Veterinary Science, Massey University, Palmerston North, New Zealand.
| | - Zelieann R Craig
- School of Animal and Comparative Biomedical Sciences, University of Arizona, Tucson, AZ, USA.
| | - Ayelet Ziv-Gal
- Department of Comparative Biosciences, University of Illinois, Urbana, IL, USA.
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Freire C, Molina-Molina JM, Iribarne-Durán LM, Jiménez-Díaz I, Vela-Soria F, Mustieles V, Arrebola JP, Fernández MF, Artacho-Cordón F, Olea N. Concentrations of bisphenol A and parabens in socks for infants and young children in Spain and their hormone-like activities. ENVIRONMENT INTERNATIONAL 2019; 127:592-600. [PMID: 30986741 DOI: 10.1016/j.envint.2019.04.013] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 04/03/2019] [Accepted: 04/04/2019] [Indexed: 05/24/2023]
Abstract
BACKGROUND Little information is available on the content of bisphenol A (BPA) and other endocrine-disrupting chemicals (EDCs) such as parabens in infant textiles and clothes. OBJECTIVES 1) To determine the concentrations of BPA and parabens in socks for infants and young children purchased in Spain, 2) to assess the (anti-)estrogenicity and (anti-)androgenicity of extracts from the socks, and 3) to estimate dermal exposure doses to these chemicals. METHODS Thirty-two pairs of socks for infants and young children (1-48 months) were purchased from 3 stores in Granada (Spain). Textile material was cut from the foot, toe, and leg of each sock (n = 96 samples) for chemical analysis. Hormone-like activities were determined in foot sections (n = 32 samples) by using the E-Screen assay for (anti-)estrogenicity and PALM luciferase assay for (anti-)androgenicity. RESULTS BPA was present in 90.6% of samples at concentrations ranging from <0.70 to 3736 ng/g. BPA levels were around 25-fold higher in socks from store 1, which had a higher cotton content compared to stores 2 and 3. Ethyl-paraben was found in 100% of samples, followed by methyl-paraben (81.0%), and propyl-paraben (43.7%). No butyl-paraben was detected in any sample. Estrogenic activity was detected in 83.3% of socks from store 1 (range = 48.2-6051 pM E2eq/g) but in only three socks from stores 2 and 3. Anti-androgenic activity was detected in six of the 32 socks studied (range = 94.4-2989 μM Proceq/g), all from store 1. Estimated dermal exposure to BPA was higher from socks for children aged 36-48 months (median = 17.6 pg/kg/day), and dermal exposure to parabens was higher from socks for children aged 24-36 months (median = 0.60 pg/kg/day). DISCUSSION This is the first report in Europe on the wide presence of BPA and parabens in socks marketed for infants and children. BPA appears to contribute to the hormone-like activity observed in sock extracts.
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Affiliation(s)
- Carmen Freire
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada E-18012, Spain; CIBER de Epidemiología y Salud Pública (CIBERESP), Granada E-18071, Spain; Centro de Investigación Biomédica (CIBM), Universidad de Granada, Granada E-18016, Spain.
| | - José-Manuel Molina-Molina
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada E-18012, Spain; CIBER de Epidemiología y Salud Pública (CIBERESP), Granada E-18071, Spain; Centro de Investigación Biomédica (CIBM), Universidad de Granada, Granada E-18016, Spain.
| | - Luz M Iribarne-Durán
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada E-18012, Spain; Departamento de Radiología y Medicina Física, Facultad de Medicina, Universidad de Granada, Granada E-18016, Spain
| | | | - Fernando Vela-Soria
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada E-18012, Spain.
| | - Vicente Mustieles
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada E-18012, Spain; Centro de Investigación Biomédica (CIBM), Universidad de Granada, Granada E-18016, Spain; Departamento de Radiología y Medicina Física, Facultad de Medicina, Universidad de Granada, Granada E-18016, Spain
| | - Juan Pedro Arrebola
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada E-18012, Spain; Departamento de Medicina Preventiva y Salud Pública, Universidad de Granada, Granada E-18016, Spain.
| | - Mariana F Fernández
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada E-18012, Spain; CIBER de Epidemiología y Salud Pública (CIBERESP), Granada E-18071, Spain; Centro de Investigación Biomédica (CIBM), Universidad de Granada, Granada E-18016, Spain; Departamento de Radiología y Medicina Física, Facultad de Medicina, Universidad de Granada, Granada E-18016, Spain.
| | - Francisco Artacho-Cordón
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada E-18012, Spain; Departamento de Radiología y Medicina Física, Facultad de Medicina, Universidad de Granada, Granada E-18016, Spain.
| | - Nicolás Olea
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada E-18012, Spain; CIBER de Epidemiología y Salud Pública (CIBERESP), Granada E-18071, Spain; Centro de Investigación Biomédica (CIBM), Universidad de Granada, Granada E-18016, Spain; Departamento de Radiología y Medicina Física, Facultad de Medicina, Universidad de Granada, Granada E-18016, Spain; Unidad de Gestión Clínica de Medicina Nuclear, Hospital Universitario San Cecilio, Granada E-18016, Spain.
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Gonzalez TL, Rae JM, Colacino JA, Richardson RJ. Homology models of mouse and rat estrogen receptor- α ligand-binding domain created by in silico mutagenesis of a human template: molecular docking with 17ß-estradiol, diethylstilbestrol, and paraben analogs. COMPUTATIONAL TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2019; 10:1-16. [PMID: 30740556 PMCID: PMC6363358 DOI: 10.1016/j.comtox.2018.11.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Crystal structures exist for human, but not rodent, estrogen receptor-α ligand-binding domain (ERα-LBD). Consequently, rodent studies involving binding of compounds to ERα-LBD are limited in their molecular-level interpretation and extrapolation to humans. Because the sequences of rodent and human ERα-LBDs are > 95% identical, we expected their 3D structures and ligand binding to be highly similar. To test this hypothesis, we used the human ERα-LBD structure (PDB 3UUD) as a template to produce rat and mouse homology models. Employing the rodent models and human structure, we generated docking poses of 23 Group A ligands (17ß-estradiol, diethylstilbestrol, and 21 paraben analogs) in AutoDock Vina for interspecies comparisons. Ligand RMSDs (Å) (median, 95% CI) were 0.49 (0.21-1.82) (human-mouse) and 1.19 (0.22-1.82) (human-rat), well below the 2.0-2.5 Å range for equivalent docking poses. Numbers of interspecies ligand-receptor residue contacts were highly similar, with Sorensen Sc (%) = 96.8 (90.0-100) (human-mouse) and 97.7 (89.5-100) (human-rat). Likewise, numbers of interspecies ligand-receptor residue contacts were highly correlated: Pearson r = 0.913 (human-mouse) and 0.925 (human-rat). Numbers of interspecies ligand-receptor atom contacts were even more tightly correlated: r = 0.979 (human-mouse) and 0.986 (human-rat). Pyramid plots of numbers of ligand-receptor atom contacts by residue exhibited high interspecies symmetry and had Spearman r s = 0.977 (human-mouse) and 0.966 (human-rat). Group B ligands included 15 ring-substituted parabens recently shown experimentally to exhibit decreased binding to human ERα and to exert increased antimicrobial activity. Ligand efficiencies calculated from docking ligands into human ERα-LBD were well correlated with those derived from published experimental data (Pearson partial r p = 0.894 and 0.918; Groups A and B, respectively). Overall, the results indicate that our constructed rodent ERα-LBDs interact with ligands in like manner to the human receptor, thus providing a high level of confidence in extrapolations of rodent to human ligand-receptor interactions.
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Affiliation(s)
- Thomas L. Gonzalez
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI 48109, USA
| | - James M. Rae
- Division of Hematology and Oncology, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan 48109, USA
| | - Justin A. Colacino
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI 48109, USA
- Department of Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, MI 48109 USA
- Center for Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI 48109 USA
| | - Rudy J. Richardson
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI 48109, USA
- Center for Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI 48109 USA
- Department of Neurology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
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Bisphenol S promotes the cell cycle progression and cell proliferation through ERα-cyclin D-CDK4/6-pRb pathway in MCF-7 breast cancer cells. Toxicol Appl Pharmacol 2019; 366:75-82. [DOI: 10.1016/j.taap.2019.01.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 01/15/2019] [Accepted: 01/19/2019] [Indexed: 11/20/2022]
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Li AJ, Kannan K. Elevated Concentrations of Bisphenols, Benzophenones, and Antimicrobials in Pantyhose Collected from Six Countries. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:10812-10819. [PMID: 30137966 DOI: 10.1021/acs.est.8b03129] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Pantyhose, a skin-tight item of clothing made of synthetic fibers and worn by women in many countries, is a source of exposure to several endocrine-disrupting chemicals. Little is known regarding the occurrence of and dermal exposure to chemicals present in pantyhose. In this study, concentrations and profiles of 23 endocrine-disrupting chemicals, including bisphenols, benzophenones, chlorophenols, parabens, and triclocarban (TCC), were determined in 74 pantyhose samples collected from 6 countries. Pantyhose samples were analyzed by two extraction methods: complete dissolution and ultrasonic extraction. Dissolution of the fabric in 1,1,1,3,3,3-hexafluoro-2-propanol/chloroform yielded concentrations of several target chemicals that were up to 286 times higher than in the ultrasonic extraction. Bisphenol S (BPS) and bisphenol A (BPA) were found in 100% and 96% of the samples at median concentrations of 1430 and 14.3 ng/g, respectively. Several brands of pantyhose contained BPS, bisphenol F (BPF), benzophenone-1 (BP-1), ethyl-paraben (EtP), and TCC at concentrations of milligrams per gram. Benzophenone-3 (BP-3), 4-hydroxy benzoic acid (4-HB), and methyl- (MeP) and propyl-parabens (PrP) were found in ≥85% of the samples at median concentrations on the order of several tens to hundreds of nanograms per gram of fabric. Pantyhose made in Japan and China with 21-50% Spandex contained the highest concentrations of BPS (2.2 mg/g), BP-1 (2.4 mg/g), and EtP (88 μg/g). Calculated dermal exposure doses to BPS, BP-1, and EtP by women via pantyhose were as high as 45 900, 50 600, and 1800 picograms per kilogram of body weight per day, respectively.
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Affiliation(s)
- Adela Jing Li
- Wadsworth Center, New York State Department of Health, and Department of Environmental Health Sciences, School of Public Health , State University of New York at Albany , Empire State Plaza , P.O. Box 509, Albany , New York 12201-0509 , United States
| | - Kurunthachalam Kannan
- Wadsworth Center, New York State Department of Health, and Department of Environmental Health Sciences, School of Public Health , State University of New York at Albany , Empire State Plaza , P.O. Box 509, Albany , New York 12201-0509 , United States
- Biochemistry Department, Faculty of Science and Experimental Biochemistry Unit, King Fahd Medical Research Center , King Abdulaziz University , Jeddah , Saudi Arabia
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Helm JS, Nishioka M, Brody JG, Rudel RA, Dodson RE. Measurement of endocrine disrupting and asthma-associated chemicals in hair products used by Black women. ENVIRONMENTAL RESEARCH 2018; 165:448-458. [PMID: 29705122 DOI: 10.1016/j.envres.2018.03.030] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 02/09/2018] [Accepted: 03/18/2018] [Indexed: 05/18/2023]
Abstract
BACKGROUND Personal care products are a source of exposure to endocrine disrupting and asthma-associated chemicals. Because use of hair products differs by race/ethnicity, these products may contribute to exposure and disease disparities. OBJECTIVE This preliminary study investigates the endocrine disrupting and asthma-associated chemical content of hair products used by U.S. Black women. METHODS We used gas chromatography/mass spectrometry (GC/MS) to test 18 hair products in 6 categories used by Black women: hot oil treatment, anti-frizz/polish, leave-in conditioner, root stimulator, hair lotion, and relaxer. We tested for 66 chemicals belonging to 10 chemical classes: ultraviolet (UV) filters, cyclosiloxanes, glycol ethers, fragrances, alkylphenols, ethanolamines, antimicrobials, bisphenol A, phthalates, and parabens. RESULTS The hair products tested contained 45 endocrine disrupting or asthma-associated chemicals, including every targeted chemical class. We found cyclosiloxanes, parabens, and the fragrance marker diethyl phthalate (DEP) at the highest levels, and DEP most frequently. Root stimulators, hair lotions, and relaxers frequently contained nonylphenols, parabens, and fragrances; anti-frizz products contained cyclosiloxanes. Hair relaxers for children contained five chemicals regulated by California's Proposition 65 or prohibited by EU cosmetics regulation. Targeted chemicals were generally not listed on the product label. CONCLUSIONS Hair products used by Black women and children contained multiple chemicals associated with endocrine disruption and asthma. The prevalence of parabens and DEP is consistent with higher levels of these compounds in biomonitoring samples from Black women compared with White women. These results indicate the need for more information about the contribution of consumer products to exposure disparities. A precautionary approach would reduce the use of endocrine disrupting chemicals in personal care products and improve labeling so women can select products consistent with their values.
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Affiliation(s)
- Robert A. Hiatt
- Department of Epidemiology and Biostatistics and Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, California 94158, USA
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Gray JM, Rasanayagam S, Engel C, Rizzo J. State of the evidence 2017: an update on the connection between breast cancer and the environment. Environ Health 2017; 16:94. [PMID: 28865460 PMCID: PMC5581466 DOI: 10.1186/s12940-017-0287-4] [Citation(s) in RCA: 109] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 07/17/2017] [Indexed: 05/23/2023]
Abstract
BACKGROUND In this review, we examine the continually expanding and increasingly compelling data linking radiation and various chemicals in our environment to the current high incidence of breast cancer. Singly and in combination, these toxicants may have contributed significantly to the increasing rates of breast cancer observed over the past several decades. Exposures early in development from gestation through adolescence and early adulthood are particularly of concern as they re-shape the program of genetic, epigenetic and physiological processes in the developing mammary system, leading to an increased risk for developing breast cancer. In the 8 years since we last published a comprehensive review of the relevant literature, hundreds of new papers have appeared supporting this link, and in this update, the evidence on this topic is more extensive and of better quality than that previously available. CONCLUSION Increasing evidence from epidemiological studies, as well as a better understanding of mechanisms linking toxicants with development of breast cancer, all reinforce the conclusion that exposures to these substances - many of which are found in common, everyday products and byproducts - may lead to increased risk of developing breast cancer. Moving forward, attention to methodological limitations, especially in relevant epidemiological and animal models, will need to be addressed to allow clearer and more direct connections to be evaluated.
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Affiliation(s)
- Janet M. Gray
- Department of Psychology and Program in Science, Technology, and Society, Vassar College, 124 Raymond Avenue, Poughkeepsie, NY 12604-0246 USA
| | - Sharima Rasanayagam
- Breast Cancer Prevention Partners, 1388 Sutter St., Suite 400, San Francisco, CA 94109-5400 USA
| | - Connie Engel
- Breast Cancer Prevention Partners, 1388 Sutter St., Suite 400, San Francisco, CA 94109-5400 USA
| | - Jeanne Rizzo
- Breast Cancer Prevention Partners, 1388 Sutter St., Suite 400, San Francisco, CA 94109-5400 USA
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Fallah Y, Brundage J, Allegakoen P, Shajahan-Haq AN. MYC-Driven Pathways in Breast Cancer Subtypes. Biomolecules 2017; 7:biom7030053. [PMID: 28696357 PMCID: PMC5618234 DOI: 10.3390/biom7030053] [Citation(s) in RCA: 124] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 06/19/2017] [Accepted: 07/06/2017] [Indexed: 12/12/2022] Open
Abstract
The transcription factor MYC (MYC proto-oncogene, bHLH transcription factor) is an essential signaling hub in multiple cellular processes that sustain growth of many types of cancers. MYC regulates expression of RNA, both protein and non-coding, that control central metabolic pathways, cell death, proliferation, differentiation, stress pathways, and mechanisms of drug resistance. Activation of MYC has been widely reported in breast cancer progression. Breast cancer is a complex heterogeneous disease and treatment options are primarily guided by histological and biochemical evaluations of the tumors. Based on biochemical markers, three main breast cancer categories are ER+ (estrogen receptor alpha positive), HER2+ (human epidermal growth factor receptor 2 positive), and TNBC (triple-negative breast cancer; estrogen receptor negative, progesterone receptor negative, HER2 negative). MYC is elevated in TNBC compared with other cancer subtypes. Interestingly, MYC-driven pathways are further elevated in aggressive breast cancer cells and tumors that display drug resistant phenotype. Identification of MYC target genes is essential in isolating signaling pathways that drive tumor development. In this review, we address the role of MYC in the three major breast cancer subtypes and highlight the most promising leads to target MYC functions.
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Affiliation(s)
- Yassi Fallah
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA.
| | - Janetta Brundage
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA.
| | - Paul Allegakoen
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA.
| | - Ayesha N Shajahan-Haq
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA.
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Cosmetic Ingredients as Emerging Pollutants of Environmental and Health Concern. A Mini-Review. COSMETICS 2017. [DOI: 10.3390/cosmetics4020011] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Guo J, Wu C, Lu D, Jiang S, Liang W, Chang X, Xu H, Wang G, Zhou Z. Urinary paraben concentrations and their associations with anthropometric measures of children aged 3 years. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 222:307-314. [PMID: 28034559 DOI: 10.1016/j.envpol.2016.12.040] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 12/15/2016] [Accepted: 12/16/2016] [Indexed: 05/22/2023]
Abstract
Parabens, known as ubiquitous preservatives, have been linked to adverse health outcomes in humans. This study aimed to examine urinary paraben concentrations of children at 3 years of age and evaluate their associations with anthropometric parameters. Urinary parabens including methylparaben (MeP), ethylparaben (EtP), propylparaben (PrP), butylparaben (BuP) and benzylparaben (BeP) were measured among 436 children in a birth cohort using gas chromatography with tandem mass spectrometry. Generalized linear models were performed to evaluate associations of paraben exposures with age- and sex-specific z scores, including weight, height, weight for height and body mass index. MeP, EtP and PrP were the dominant parabens in urinary samples, with the median concentrations of 6.03 μg/L, 3.17 μg/L, 2.40 μg/L, respectively. The median values of estimated daily intake (EDIurine) of five urinary paraben concentrations were 12.10, 5.68, 4.50, 0.06 and 0.17 μg/kg-body weight/day, respectively. Urinary EtP concentrations were positively associated with weight z scores [regression coefficient β = 0.16, 95% confidence interval (CI): 0.04, 0.29; p = 0.01] and height z scores (β = 0.15, 95% CI: 0.03, 0.27; p = 0.01). Positive associations were found between the sum of molar concentrations of five parabens and height z scores among all children (β = 0.24, 95% CI: 0.04, 0.45; p = 0.02). These significant associations were only observed in boys. Our findings suggest that exposure to parabens may be adversely associated with physical growth in 3-year-old boy children. Further prospective studies are warranted to understand the toxicological mechanisms of paraben exposures and potential risk of children.
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Affiliation(s)
- Jianqiu Guo
- School of Public Health, Key Laboratory of Public Health Safety of Ministry of Education, Collaborative Innovation Center of Social Risks Governance in Health, Fudan University, No.130 Dong'an Road, Shanghai 200032, China
| | - Chunhua Wu
- School of Public Health, Key Laboratory of Public Health Safety of Ministry of Education, Collaborative Innovation Center of Social Risks Governance in Health, Fudan University, No.130 Dong'an Road, Shanghai 200032, China.
| | - Dasheng Lu
- School of Public Health, Key Laboratory of Public Health Safety of Ministry of Education, Collaborative Innovation Center of Social Risks Governance in Health, Fudan University, No.130 Dong'an Road, Shanghai 200032, China; Shanghai Municipal Center for Disease Control and Prevention, No. 1380 Zhongshan West Road, Shanghai 200336, China
| | - Shuai Jiang
- School of Public Health, Key Laboratory of Public Health Safety of Ministry of Education, Collaborative Innovation Center of Social Risks Governance in Health, Fudan University, No.130 Dong'an Road, Shanghai 200032, China; Shanghai Municipal Center for Disease Control and Prevention, No. 1380 Zhongshan West Road, Shanghai 200336, China
| | - Weijiu Liang
- Shanghai Center for Disease Control and Prevention, No.39 Yunwushan Road, Changning District, Shanghai 200051, China
| | - Xiuli Chang
- School of Public Health, Key Laboratory of Public Health Safety of Ministry of Education, Collaborative Innovation Center of Social Risks Governance in Health, Fudan University, No.130 Dong'an Road, Shanghai 200032, China
| | - Hao Xu
- Shanghai Center for Disease Control and Prevention, No.39 Yunwushan Road, Changning District, Shanghai 200051, China
| | - Guoquan Wang
- Shanghai Municipal Center for Disease Control and Prevention, No. 1380 Zhongshan West Road, Shanghai 200336, China
| | - Zhijun Zhou
- School of Public Health, Key Laboratory of Public Health Safety of Ministry of Education, Collaborative Innovation Center of Social Risks Governance in Health, Fudan University, No.130 Dong'an Road, Shanghai 200032, China
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Somarriva C, Fernández A, Candia J, Campos J, Albers D, Briceño J. Dysregulation and detection methods of EGFR in oral cancer. A narrative review. JOURNAL OF ORAL RESEARCH 2016. [DOI: 10.17126/joralres.2016.057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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