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Gong Y, Hu L, Li M, Yang Y, Xu L, Hao J. Biophysical impact of lubricating base oil aerosols on natural pulmonary surfactant film. JOURNAL OF HAZARDOUS MATERIALS 2024; 476:135248. [PMID: 39029184 DOI: 10.1016/j.jhazmat.2024.135248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 07/07/2024] [Accepted: 07/16/2024] [Indexed: 07/21/2024]
Abstract
Lubricating base oils have been extensively employed for producing various industrial and consumer products. Therefore, their environmental and health impacts should be carefully evaluated. Although there have been many reports on pulmonary cytotoxicity and inflammatory responses of inhaled lubricating base oils, their potential influences on pulmonary surfactant (PS) films that play an essential role in maintaining respiratory mechanics and pulmonary immunity remains largely unknown. Here a systematic study on the interactions between an animal-derived natural PS and aerosols of water and representative mineral and vegetable base oils is performed using a novel biophysical assessing technique called constrained drop surfactometry capable of providing in vitro simulations of normal tidal breathing and physiologically relevant temperature and humidity in the lung. It was found that the mineral oil aerosols can impose strong inhibitions to the biophysical property of PS film, while the airborne vegetable oils and water show negligible adverse effects within the studied concentration range. The inhibitory effect is originated from the strong hydrophobicity of mineral oil, which makes it able to disrupt the interfacial molecular ordering of both phospholipid and protein compositions and consequently suppress the formation of condensed phase and multilayer scaffolds in a PS film. ENVIRONMENTAL IMPLICATION: Understanding the biophysical influence of airborne lubricating base oils on pulmonary surfactant (PS) films can provide new insights into the environmental impacts and health concerns of various industrial lubricant products. Here a comparative study on interactions between an animal-derived natural PS film and the aerosols of water and representative mineral and vegetable base oils under the true physiological conditions was conducted in situ using constrained drop surfactometry. We show that the most frequently used mineral base oil can cause strong inhibitions to the PS film by disrupting the molecular ordering of saturated phospholipids and surfactant-associated proteins at the interface.
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Affiliation(s)
- Yan Gong
- Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai 264000, PR China
| | - Lulin Hu
- Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai 264000, PR China; State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China
| | - Mingfei Li
- Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai 264000, PR China; Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials, Shandong University, Jinan 250100, PR China
| | - Yi Yang
- Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai 264000, PR China; State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China.
| | - Lu Xu
- Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai 264000, PR China; State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China.
| | - Jingcheng Hao
- Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai 264000, PR China; Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials, Shandong University, Jinan 250100, PR China
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Sung CR, Kim BJ, Park CJ, Oh IA, Lee YJ, Park YR, Kwack SJ. Evaluation of the anti-androgenic and cytotoxic effects of benzophenone-3 in male Sprague-Dawley rats. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2024; 87:266-273. [PMID: 38166509 DOI: 10.1080/15287394.2023.2300785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
Benzophenone-3 (BP-3, 2-hydroxy-4-methoxybenzophenone, oxybenzone) is one of the most widely used types of benzophenone organic sunscreen. However, this compound is a potentially harmful toxicant. The aim of this study was 2-fold to: (1) utilize a Hershberger bioassay in vivo in castrated male Sprague-Dawley rats to investigate the anti-androgenic activities of BP-3, and (2) use in vitro a methyl tetrazolium assay to compare the toxicity between Leydig cells (TM3 cells) and mouse fibroblast (NIH-3T3) cell lines. In the Hershberger assay, rats were divided into 6 groups (each of n = 7): a vehicle control, negative control, positive control, PB-3 low (40 mg/kg), BP-3 intermediate (200 mg/kg), and BP-3 high (1000 mg/kg)-dose. The weight of the ventral prostate was significantly decreased at BP-3 doses of 200 or 1,000 mg/kg/day. In addition, the levator anibulbocavernosus muscle weights were also significantly reduced at BP-3 doses of 40, 200, or 1,000 mg/kg/day. In the MTT assay, the viability of NIH-3T3 mouse fibroblast cells was within the normal range. However, the TM3 mouse testis Leydig cell viability was significantly lowered in a concentration-dependent manner. Therefore, data indicate that BP-3 might exert in vivo anti-androgenic and in vitro cytotoxic effects in cells associated with the male reproductive system compared to normal non-reproductive cells.Abbreviation: BP-3: benzophenone-3; CG: Cowper's gland; DMEM: Dulbecco's modified Eagle's medium; DMSO: dimethyl sulfoxide; GP: glans penis; LABC: levator anibulbocavernosus muscle; MTT: methyl tetrazolium; NC: negative control; PC: positive control; SV: seminal vesicle; TP: testosterone propionate; VC: vehicle control; VP: ventral prostate.
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Affiliation(s)
- Chi Rim Sung
- Department of Bio Health Science, College of Natural Science, Changwon National University, Changwon, Republic of Korea
| | - Byeong Jun Kim
- Nonclinical Research Center, Chemon Inc., Yongin, Republic of Korea
| | - Chan Ju Park
- Department of Bio Health Science, College of Natural Science, Changwon National University, Changwon, Republic of Korea
| | - In Ah Oh
- Department of Bio Health Science, College of Natural Science, Changwon National University, Changwon, Republic of Korea
| | - Yu Jin Lee
- Department of Bio Health Science, College of Natural Science, Changwon National University, Changwon, Republic of Korea
| | - Yeo Rim Park
- Department of Bio Health Science, College of Natural Science, Changwon National University, Changwon, Republic of Korea
| | - Seung Jun Kwack
- Department of Bio Health Science, College of Natural Science, Changwon National University, Changwon, Republic of Korea
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Moja MM, Mapossa AB, Chirwa EMN, Tichapondwa S. Photocatalytic degradation of 2,4-dichlorophenol using nanomaterials silver halide catalysts. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:11857-11872. [PMID: 38224437 PMCID: PMC10869396 DOI: 10.1007/s11356-024-31921-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 01/04/2024] [Indexed: 01/16/2024]
Abstract
In this study, the photocatalytic activity of nanomaterials Ag/AgX (X = Cl, Br, I) is reported. Highly efficient silver halide (Ag/AgX where X = Cl, Br, I) photocatalysts were synthesized through a hydrothermal method. The samples were characterized using a range of techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), and Brunauer-Emmett-Teller (BET) to check their structural, morphology, textural and optical properties. In addition, the photocatalytic activity of photocatalysts was evaluated through the degradation of 2,4-dichlorophenol (2,4-DCP) under UV and visible light irradiation. XRD analysis confirmed the presence of a single-phase structure (pure phase) in the synthesized photocatalysts. SEM micrographs showed agglomeration with a non-uniform distribution of particles, which is a characteristic of surfactant-free precipitation reactions in aqueous media. The Ag/AgBr photocatalyst exhibited the best degradation efficiency, resulting in 83.37% and 89.39% photodegradation after 5 h of UV and visible light irradiation, respectively. The effect of catalyst loading, initial solution pH, and 2,4-DCP concentration was investigated for the best-performing Ag/AgBr photocatalyst. The degradation kinetics were best described by the pseudo-first-order Langmuir-Hinshelwood model. The photocatalytic capacity of Ag/AgBr decreased by 50% after five reuse cycles. SEM images revealed heightened levels of photodegradation on the catalyst surface. The study proved the feasibility of using simple synthesis methods to produce visible light active photocatalysts capable of degrading refractory phenolic pollutants in aqueous systems.
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Affiliation(s)
- Mahlako Mary Moja
- Department of Chemical Engineering, University of Pretoria, Pretoria, 0002, South Africa
| | - António Benjamim Mapossa
- Department of Chemical Engineering, University of Pretoria, Pretoria, 0002, South Africa.
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive NW, Calgary, AB, T2N 1N4, Canada.
| | | | - Shepherd Tichapondwa
- Department of Chemical Engineering, University of Pretoria, Pretoria, 0002, South Africa
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Tiwari S, Tripathi P, Mohan D, Singh RS. Imidacloprid biodegradation using novel bacteria Tepidibacillus decaturensis strain ST1 in batch and in situ microcosm study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:61562-61572. [PMID: 36534260 DOI: 10.1007/s11356-022-24779-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 12/12/2022] [Indexed: 05/10/2023]
Abstract
Imidacloprid is one of the frequently used insecticides. Indiscriminate use of imidacloprid makes it perilous to non-target organisms as well as the environment, including soil and water sources, thus, making its elimination from the environment an irresistible concern. Bioremediation is a technique that uses the degrading capabilities of bacteria to create an economical and reliable method of pesticide abatement. In an attempt to solve the problem arising due to imidacloprid contamination, bacterial strains possessing the ability to degrade imidacloprid were isolated from contaminated agricultural soil samples in the present study. Imidacloprid-degrading isolate, identified as Tepidibacillus decaturensis strain ST1, could effectively degrade imidacloprid in liquid media, slurry, and soil microcosms. The microcosm studies using the isolate resulted in the degradation of around 77.5% and 85% of imidacloprid (200 ppm) in sterile and unsterile soils within 45 days. In addition to biodegradation, sorption of insecticide by the plants and natural reduction of insecticide over time has also been reported. The degradation in soil follows first-order kinetics. Hydrazinecarboxamide and hydroxyurea were identified as metabolites on conducting GC-MS analysis of the degraded samples.
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Affiliation(s)
- Sonam Tiwari
- Department of Civil Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, India
| | - Pranjal Tripathi
- Department of Chemical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, India
| | - Devendra Mohan
- Department of Civil Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, India
| | - Ram Sharan Singh
- Department of Chemical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, India.
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Monteiro GN, Monteiro DS, Oliveira RJ, Cunha-Laura AL, Amaral EA, Auharek SA. Testicular toxicity in mice exposed to terephthalic acid in utero and during lactation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:66050-66061. [PMID: 37097558 DOI: 10.1007/s11356-023-26849-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 04/03/2023] [Indexed: 05/17/2023]
Abstract
Terephthalic acid (TPA) is a worldwide aromatic compound widely used to manufacture resins and the raw material for the polymerization reaction with ethylene glycol to produce polyethylene terephthalate, known as PET. The use of TPA extends to the synthesis of phthalates, plasticizers used in various industrialized products such as toys and cosmetics. The present study aimed to evaluate the testicular toxicity of terephthalic acid on male mice exposed in utero and during lactation to TPA in different developmental windows. The animals were treated intragastric with TPA at stock dispersal dosages corresponding to 0.0014 g/ml and 0.56 g/ml of TPA in 0.5% v/v carboxymethylcellulose as well as the control dose, composed solely of dispersion of carboxymethylcellulose (0.5% v/v). Four experimental windows were established: group I-treatment in utero, in the fetal period (gestational day-GD 10.5-18.5), with euthanasia at GD 18.5; group II-treatment in utero, in the fetal period (GD 10.5-18.5) and the lactational period (postnatal day (PND-15)), with euthanasia at 15 days; group III-treatment in utero in the fetal period (DG 10.5-18.5) with euthanasia at 70 days (age of sexual maturity, PND 70); group IV-treatment in utero, in the fetal period (GD 10.5-18.5) and the lactational period (PND-15), with euthanasia at 70 days (PND70). The results indicate that TPA changes the reproductive parameters (testicular weight, GI, penis size, and anogenital index) only at the dose of 0.56 g/ml in the fetal period. Data on the volumetric ratio of the testis elements show that the dispersion with the highest concentration of TPA significantly altered the blood vessel/capillary, lymphatic vessel, and connective tissue percentages. Only at the dose of 0.56 g/ml TPA was it effective in decreasing the Leydig and Sertoli cell numbers of the euthanized animals at GD 18.5. In group II, TPA increased the diameter and lumen of seminiferous tubules, which indicates that TPA accelerated the maturation process of Sertoli cells without changing the number and the nuclear volume of these cells. The Sertoli and Leydig cell numbers of the 70-day animals exposed to TPA in the gestational and lactational period were similar to the control. Therefore, the present study is the first in the literature to show that TPA presents a testicular toxicity during fetal (DG18.5) and postnatal life (PND15), without repercussion in adulthood (70 days).
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Affiliation(s)
- Gustavo Nazareno Monteiro
- Faculdade de Medicina Do Mucuri (FAMMUC), Universidade Federal Dos Vales Do Jequitinhonha E Mucuri (UFVJM), Teófilo Otoni, Minas Gerais, Brazil
- Instituto de Ciência, Engenharia E Tecnologia (ICET), Universidade Federal Dos Vales Do Jequitinhonha E Mucuri (UFVJM), Teófilo Otoni, Minas Gerais, Brazil
| | - Douglas Santos Monteiro
- Instituto de Ciência, Engenharia E Tecnologia (ICET), Universidade Federal Dos Vales Do Jequitinhonha E Mucuri (UFVJM), Teófilo Otoni, Minas Gerais, Brazil
| | - Rodrigo Juliano Oliveira
- Centro de Estudos Em Células Tronco, Terapia Celular E Genética Toxicológica (CeTroGen), Hospital Universitário Maria Aparecida Pedrossian (HUMAP), Universidade Federal de Mato Grosso Do Sul (UFMS), Campo Grande, Mato Grosso Do Sul, Brazil
| | - Andréa Luiza Cunha-Laura
- Instituto de Biologia (INBIO), Universidade Federal de Mato Grosso Do Sul (UFMS), Campo Grande, Mato Grosso Do Sul, Brazil
| | - Ernani Aloysio Amaral
- Faculdade de Medicina Do Mucuri (FAMMUC), Universidade Federal Dos Vales Do Jequitinhonha E Mucuri (UFVJM), Teófilo Otoni, Minas Gerais, Brazil
| | - Sarah Alves Auharek
- Faculdade de Medicina Do Mucuri (FAMMUC), Universidade Federal Dos Vales Do Jequitinhonha E Mucuri (UFVJM), Teófilo Otoni, Minas Gerais, Brazil.
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Liang J, Liu QS, Ren Z, Min K, Yang X, Hao F, Zhang Q, Liu Q, Zhou Q, Jiang G. Studying paraben-induced estrogen receptor- and steroid hormone-related endocrine disruption effects via multi-level approaches. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 869:161793. [PMID: 36702264 DOI: 10.1016/j.scitotenv.2023.161793] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 01/19/2023] [Accepted: 01/19/2023] [Indexed: 06/18/2023]
Abstract
Increasing concerns have been raised on the health risks of parabens in the regard of their widespread applications and potential endocrine disrupting activities. In this study, four typical parabens, including methyl paraben (MeP), ethyl paraben (EtP), propyl paraben (PrP), and butyl paraben (BuP) were systematically investigated for their estrogen receptor- and steroid hormone-related endocrine disruptions using multi-level approaches. Paraben exposure promoted the proliferation of MCF-7 cells, increased the luciferase activity in MVLN cells, and induced the vitellogenin (vtg) expression in zebrafish larvae, showing the typical estrogenic effects. The in vitro protein assays further revealed that PrP and BuP could bind with two isoforms of estrogen receptors (ERs). The estrogenic activities of parabens were predicted to be positively correlated with their chemical structure complexity by using molecular docking analysis. Furthermore, the synthesis and secretion of estradiol (E2) and testosterone (T) were significantly disturbed in H295R cells and zebrafish larvae, which could be regulated by paraben-induced transcriptional disturbance in both in vitro steroidogenesis and in vivo hypothalamic-pituitary-gonadal (HPG) axis. Parabens could disturb the endocrine system by activating the ERs and disrupting the steroid hormone synthesis and secretion, suggesting their potential deleterious risks to the environment and human health.
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Affiliation(s)
- Jiefeng Liang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China; Sino-Danish College, University of Chinese Academy of Sciences, Beijing 100049, PR China; Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, PR China
| | - Qian S Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China.
| | - Zhihua Ren
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Ke Min
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China
| | - Xiaoxi Yang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China
| | - Fang Hao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, PR China; Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi 214122, PR China
| | - Qing Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China
| | - Qian Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Qunfang Zhou
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Guibin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, PR China
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Guerra MT, Erthal RP, Punhagui-Umbelino APF, Trinque CM, Torres de Bari MA, Nunes TDM, Costa WF, Cleto PH, Fernandes GSA. Reproductive toxicity of maternal exposure to di(2-ethylhexyl)phthalate and butyl paraben (alone or in association) on both male and female Wistar offspring. J Appl Toxicol 2023; 43:242-261. [PMID: 35962557 DOI: 10.1002/jat.4377] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 07/18/2022] [Accepted: 08/05/2022] [Indexed: 01/17/2023]
Abstract
Parabens and phthalates are commonly found as contaminants in human fluids and are able to provoke reproductive toxicity, being considered endocrine disruptors. To evaluate the effects of phthalate and paraben, alone or in combination, on reproductive development of the offspring, female pregnant Wistar rats were allocated in six experimental groups: Three control groups (gavage [CG], subcutaneous [CS], and gavage + subcutaneous) received corn oil as vehicle, and the remaining groups were exposed to di(2-ethylhexyl)phthalate (DEHP) (500 mg/kg, gavage), butyl paraben (BP) (100 mg/kg, subcutaneously), or MIX (DEHP + BP), from Gestational Day 12 until Postnatal Day (PND) 21. The following parameters were assessed on the offspring: anogenital distance and weight at PND 1, nipple counting at PND 13, puberty onset, estrous cycle, weights of reproductive and detoxifying organs, histological evaluation of reproductive organs, and sperm evaluations (counts, morphology, and motility). Female pups from MIX group presented reduced body weight at PND 1, lower AGD, and decreased endometrium thickness. Male animals showed decreased body weight at PND 1 and lower number of Sertoli cells on DEHP and MIX groups, MIX group revealed increase of abnormal seminiferous tubules, DEHP animals presented delayed preputial separation and higher percentage of immotile sperms, and BP males presented diminished number of Leydig cells. In conclusion, the male offspring was more susceptible to DEHP toxicity; even when mixed to paraben, the main negative effects observed seem to be due to antiandrogenic phthalate action. On the other hand, DEHP seems to be necessary to improve the effects of BP on reducing estrogen-dependent and increasing androgen-dependent events.
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Affiliation(s)
| | - Rafaela Pires Erthal
- Department of Pathological Sciences, Biological Sciences Center, State University of Londrina-UEL, Londrina, Brazil
| | | | - Camila Moreira Trinque
- Department of General Biology, Biological Sciences Center, State University of Londrina-UEL, Londrina, Brazil
| | | | | | - Wagner Ferrari Costa
- Department of General Biology, Biological Sciences Center, State University of Londrina-UEL, Londrina, Brazil
| | - Pedro Horácio Cleto
- Department of General Biology, Biological Sciences Center, State University of Londrina-UEL, Londrina, Brazil
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Vitamin C mitigates hematological and biochemical alterations caused by di(2-ethylhexyl) phthalate toxicity in female albino mice, Mus musculus. COMPARATIVE CLINICAL PATHOLOGY 2022; 31:1005-1016. [PMID: 36247333 PMCID: PMC9540055 DOI: 10.1007/s00580-022-03400-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 09/30/2022] [Indexed: 11/27/2022]
Abstract
Di(2-ethylhexyl) phthalate (DEHP) is ubiquitous environmental contaminant and identified as endocrine-disrupting chemical (EDC), present in plastics as plasticizer. Due to its versatile use, human exposure level reaches to danger limit. The main focus of our study is to see the effect of vitamin C on hematological and biochemical alterations caused by Di(2-ethylhexyl) Phthalate toxicity in female albino mice, Mus musculus. It is found to cause defects of the liver, kidney, and lungs. Its anti-androgenic nature brings the main focus on its toxicity associated with reproductive and endocrine system. In this experimental study, 18 young female Swiss albino mice, Mus musculus, were used and divided into 3 groups of 6 animals each as control (corn oil vehicle), DEHP group (100 mg/kg body weight dissolved in corn oil), and DEHP + vitamin-C group (100 mg/kg body weight each, dissolved in corn oil and double distilled water, respectively) for 90 days. In this research, serum metabolites were evaluated to study the effect of DEHP on glucose, total protein, and lipid profile along with some hematological, enzymological, and oxidative stress parameters. Simultaneously, we compared the effectiveness of vitamin-C against DEHP toxicity to mitigate the serum homeostasis disturbance. In present study, we observed, in DEHP-treated animals, glucose, triglycerides, very-low-density lipoprotein (VLDL), total protein, alkaline phosphatase (ALP), acid phosphatase (ACP), and alanine aminotransferase (ALT) levels increased remarkably, whereas total cholesterol, high-density lipoproteins (HDL), aspartate aminotransferase (AST), total RBC count, total WBC count, and hemoglobin (Hb) level significantly decreased as compared to control group. In addition, we noticed there was a decrease in superoxide dismutase (SOD) and increase in levels of lipid peroxidation (MDA) and interleukin-6 (IL-6) in DEHP treatment group as compared to control group. The results indicated vitamin C had a better improving effect against DEHP toxicity on balancing metabolic abnormalities and inflammation-related comorbidities.
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Korkmaz C, Ay Ö, Dönmez AE, Demirbağ B, Erdem C. Effects of Lead on Reproduction Physiology and Liver and Gonad Histology of Male Cyprinus carpio. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2022; 108:685-693. [PMID: 35039884 DOI: 10.1007/s00128-021-03426-x] [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: 05/18/2021] [Accepted: 12/09/2021] [Indexed: 06/14/2023]
Abstract
Sera 17β-estradiol (E2), 11-ketotesteron (11-KT) and 17,20-β-dihydroxy-4-pregnen-3-one (17,20βP) levels and hepatosomatic-gonadosomatic indexes (HSI-GSI) were determined after exposing male C. carpio to 0.13 and 0.26 mg L-1 lead after 7, 14 and 21 days. Histological changes in liver and gonad tissues of male C. carpio were also determined. Sera E2, 11-KT and 17,20βP levels of male fish although showed differences from the control fish, these differences were not statistically significant. This was also true for the HSI values, the GSI values however, decreased on day 7 under the effect of 0.26 mg L-1 Pb. Dilatation in bile duct and sinusoids and lymphocyte infiltration were observed under histopathological examination. Low intensities of fibrosis were detected in testis tissues. Exposure to low concentrations of Pb did not cause endocrine disrupting and extensive histopathologic effects in C. carpio at the exposure periods tested.
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Affiliation(s)
- Cengiz Korkmaz
- Department of Basic Sciences, Faculty of Fisheries, Mersin University, 33169, Mersin, Turkey.
| | - Özcan Ay
- Department of Basic Sciences, Faculty of Fisheries, Mersin University, 33169, Mersin, Turkey
| | - Ahmet Erdem Dönmez
- Department of Basic Sciences, Faculty of Fisheries, Mersin University, 33169, Mersin, Turkey
| | - Burcu Demirbağ
- Advanced Technology Education, Research and Application Center, Mersin University, 33110, Mersin, Turkey
| | - Cahit Erdem
- Biology Department, Faculty of Science and Letters, Çukurova University, 01330, Adana, Turkey
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Silva M, Kwok RKH. Use of Computational Toxicology Tools to Predict In Vivo Endpoints Associated with Mode of Action and the Endocannabinoid System: A Case Study with Chlorpyrifos, Chlorpyrifos-oxon and Δ9Tetrahydrocannabinol. Curr Res Toxicol 2022; 3:100064. [PMID: 35243363 PMCID: PMC8860916 DOI: 10.1016/j.crtox.2022.100064] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 01/16/2022] [Accepted: 02/03/2022] [Indexed: 01/04/2023] Open
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Ivorra L, Cruzeiro C, Ramos A, Tagulao K, Cardoso PG. How can environmental conditions influence dicofol genotoxicity on the edible Asiatic clam, Meretrix meretrix? ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 293:118467. [PMID: 34748885 DOI: 10.1016/j.envpol.2021.118467] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 10/27/2021] [Accepted: 11/03/2021] [Indexed: 06/13/2023]
Abstract
Genotoxic effects of dicofol on the edible clam Meretrix meretrix were investigated through a mesocosm experiment. Individuals of M. meretrix, were exposed to environmental concentration (D1 = 50 ng/L) and supra-environmental concentration (D2 = 500 ng/L) of dicofol for 15 days, followed by the same depuration period. DNA damage (i.e., strand breaks and alkali-labile sites) was evaluated at day 1, 7 and 15, during uptake and depuration, using Comet assay (alkaline version) and nuclear abnormalities (NAs) as genotoxicity biomarkers. The protective effects of dicofol against DNA damage induced by ex vivo hydrogen peroxide (H2O2) exposure were also assessed. Comet assay results revealed no significant DNA damages under dicofol exposure, indicating 1) apparent lack of genotoxicity of dicofol to the tested conditions and/or 2) resistance of the animals due to optimal adaptation to stress conditions. Moreover, ex vivo H2O2 exposure showed an increase in the DNA damage in all the treatments without significant differences between them. However, considering only the DNA damage induced by H2O2 during uptake phase, D1 animals had significantly lower DNA damage than those from other treatments, revealing higher protection against a second stressor. NAs data showed a decrease in the % of cells with polymorphic, kidney shape, notched or lobbed nucleus, along the experiment. The combination of these results supports the idea that the clams used in the experiment were probably collected from a stressful environment (in this case Pearl River Delta region) which could have triggered some degree of adaptation to those environmental conditions, explaining the lack of DNA damages and highlighting the importance of organisms' origin and the conditions that they were exposed during their lives.
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Affiliation(s)
- Lucia Ivorra
- Institute of Science and Environment, ISE-University of Saint Joseph, Macao
| | - Catarina Cruzeiro
- Helmholtz Zentrum München, German Research Centre for Environmental Health, GmbH, Research Unit Comparative Microbiome Analysis, Ingolstaedter Landstrasse 1, 85764, Neuherberg, Germany; Department of Life Sciences, CFE-Centre for Functional Ecology, University of Coimbra, Coimbra, Portugal
| | - Alice Ramos
- Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto (U.Porto), Porto, Portugal; CIIMAR-Interdisciplinary Centre for Marine and Environmental Research, University of Porto, Matosinhos, Portugal
| | - Karen Tagulao
- Institute of Science and Environment, ISE-University of Saint Joseph, Macao
| | - Patricia G Cardoso
- CIIMAR-Interdisciplinary Centre for Marine and Environmental Research, University of Porto, Matosinhos, Portugal.
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Baos R, Cabezas S, González MJ, Jiménez B, Delibes M. Eurasian otter (Lutra lutra) as sentinel species for the long-term biomonitoring of the Guadiamar River after the Aznalcóllar mine spill. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 802:149669. [PMID: 34525684 DOI: 10.1016/j.scitotenv.2021.149669] [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: 05/20/2021] [Revised: 07/29/2021] [Accepted: 08/10/2021] [Indexed: 06/13/2023]
Abstract
Accidents at mines involving stored tailings have produced catastrophic environmental damage. In April 1998 the dam of the Aznalcóllar mine tailings pond in the surroundings of the Doñana National Park (southwestern Spain) broke, discharging into the Guadiamar River more than 6 million m3 of toxic mud and acidic water with high concentrations of heavy metals and arsenic. We used the Eurasian otter (Lutra lutra) as sentinel species to assess the potential impact of the toxic spill on the river ecosystems and their recovery with time by studying the spatial and temporal variation (1999-2003, 2006) of selected trace element (Cu, Zn, Cd, Pb and As) concentrations in feces. Throughout the sampling period, the highest heavy metal and As levels were found in the most spill-affected reaches of the Guadiamar River (i.e., the Middle and, to a lesser extent, the Lower reaches), pointing out the mining accident as the main origin of the contamination. Overall, levels of trace elements decreased with the time elapsed since the toxic spill, except for Cd (F1,352 = 0.29, P = 0.59). However, rebounds for some elements (Pb, As, and Cu) were also observed, especially in the Middle and Lower reaches of the river, which might be attributed to the residual contamination in abiotic compartments and/or new inputs from industrial and agricultural activities in the nearby areas. Concentrations were relatively high when compared to those reported for both our reference area (Guadalete River) and other metal-polluted zones. We found that the estimated amounts of Pb and As ingested during the first years after the spill in the Guadiamar Middle reach would be high enough to cause reproductive issues. This could affect the local population recovery, although evidence on distribution range and numbers suggests otherwise, with thriving populations at regional scale. Our results support the role of otters as sentinel species for biomonitoring contaminants and thus to evaluate fluvial ecosystem health.
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Affiliation(s)
- Raquel Baos
- Department of Conservation Biology, Doñana Biological Station (EBD-CSIC), Seville, Spain.
| | - Sonia Cabezas
- Department of Biology, University of Saskatchewan, Saskatoon, Canada
| | - María José González
- Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry (IQOG-CSIC), Madrid, Spain
| | - Begoña Jiménez
- Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry (IQOG-CSIC), Madrid, Spain
| | - Miguel Delibes
- Department of Conservation Biology, Doñana Biological Station (EBD-CSIC), Seville, Spain
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Hegde GM, Aditya S, Wangdi D, Chetri BK. Mycoremediation: A Natural Solution for Unnatural Problems. Fungal Biol 2022. [DOI: 10.1007/978-981-16-8877-5_17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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14
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Lauschke K, Dalgaard MD, Emnéus J, Vinggaard AM. Transcriptomic changes upon epoxiconazole exposure in a human stem cell-based model of developmental toxicity. CHEMOSPHERE 2021; 284:131225. [PMID: 34182286 DOI: 10.1016/j.chemosphere.2021.131225] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 06/07/2021] [Accepted: 06/11/2021] [Indexed: 06/13/2023]
Abstract
Conazole fungicides such as epoxiconazole are mostly used on cereals of crops to inhibit fungal growth through direct inhibition of sterol 14α-demethylase (CYP51A1). However, this enzyme is highly conserved and in humans it is part of the steroid hormone biosynthesis pathway. Endocrine disrupting effects of epoxiconazole have been shown in rodents and have been substantiated by in vitro data, however, the underlying molecular mechanisms are not clear. We took advantage of a human stem cell based in vitro model for developmental toxicity to study the molecular effects of epoxiconazole. This model is based on 3D cultures of embryoid bodies and differentiation into cardiomyocytes, which mimics the early stages of embryonic development. We have previously shown that epoxiconazole impairs differentiation of these embryoid bodies and therefore has the potential to affect human embryonic development. We employed global transcriptome analysis using RNA sequencing and found that the steroid biosynthesis pathway including CYP51A1, the human sterol 14α-demethylase, was highly deregulated by epoxiconazole in our model. We confirmed that most genes of the steroid biosynthesis pathway were upregulated, including CYP51A1, suggesting a compensatory mechanism at the gene expression level. Our data suggest that epoxiconazole acts mainly by decreasing cholesterol biosynthesis in the cells. We conclude that epoxiconazole bears the potential to harm human embryonic development through inhibition of the steroid biosynthesis pathway. As this may be a common feature of compounds that target sterol 14α-demethylase, we add evidence to the assumption that conazole fungicides may be human developmental toxicants.
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Affiliation(s)
- Karin Lauschke
- National Food Institute, Technical University of Denmark, Denmark; Department for Biotechnology and Biomedicine, Technical University of Denmark, Denmark
| | | | - Jenny Emnéus
- Department for Biotechnology and Biomedicine, Technical University of Denmark, Denmark
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Verdian A, Rouhbakhsh Z, Fooladi E. An ultrasensitive platform for PCB77 detection: New strategy for liquid crystal-based aptasensor fabrication. JOURNAL OF HAZARDOUS MATERIALS 2021; 402:123531. [PMID: 32721640 DOI: 10.1016/j.jhazmat.2020.123531] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 07/10/2020] [Accepted: 07/17/2020] [Indexed: 05/29/2023]
Abstract
Polychlorinated biphenyls (PCBs) are considered persistent bio-accumulative toxicants which threats global food safety and environmental health. Traditional analytical techniques for detection of PCBs are time-consuming and they do not satisfy urgent need for rapid and accurate monitoring of these persistent pollutants. Biosensor technology may be promising in this respect. Here we demonstrate a novel liquid crystal (LC)-based aptasensing platform as a promising label-free and rapid biosensor for PCB77 detection. This novel molecular strategy utilize triple-helix molecular conformational switch which is mediated formation of duplex on sensing platform in presence of target. Duplex forming leads to optical change from dark to bright in a liquid crystal based aptasensor. The limit of quantification of the LC-aptasensor to PCB77 is 1.5 × 10-5 μg/L with comparable selectivity. Besides, we also demonstrated that this system is able to detect PCB77 in tap water, environmental water and milk. This strategy has potential for label-free and portable detection of different targets without any aptamer sequence length restrictions.
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Affiliation(s)
- Asma Verdian
- Department of Food Safety and Quality Control, Research Institute of Food Science and Technology (RIFST), Mashhad, Iran.
| | - Zeinab Rouhbakhsh
- Department of Food Safety and Quality Control, Research Institute of Food Science and Technology (RIFST), Mashhad, Iran
| | - Ebrahim Fooladi
- Department of Food Safety and Quality Control, Research Institute of Food Science and Technology (RIFST), Mashhad, Iran
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16
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Wu S, Wang M, Deng Y, Qiu J, Zhang X, Tan J. Associations of toxic and essential trace elements in serum, follicular fluid, and seminal plasma with In vitro fertilization outcomes. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 204:110965. [PMID: 32798747 DOI: 10.1016/j.ecoenv.2020.110965] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 06/26/2020] [Accepted: 06/28/2020] [Indexed: 05/28/2023]
Abstract
Toxic and essential trace elements are associated with human fertility. However, limited studies have been conducted on the relationship between trace elements and in vitro fertilization (IVF) outcomes in the Chinese population. In this exploratory study, 103 couples who underwent IVF/intracytoplasmic sperm injection (ICSI) treatment in our reproductive center were recruited. Serum and follicular fluid (FF) samples and seminal plasma samples were collected from the female and male partners, respectively, on the day of oocyte retrieval. Concentrations of chromium (Cr), nickel (Ni), arsenic (As), selenium (Se), cadmium (Cd), and lead (Pb) in the specimens were measured by inductively coupled plasma-mass spectrometry. Generalized linear models were used to evaluate the associations of toxic and essential trace element levels with the intermediate parameters and outcomes of IVF at both the sex-specific and couple levels. The Cr level in the serum of the female partners was inversely associated with the count of mature oocytes retrieved (p for trend = 0.033). In terms of embryo development, As concentrations in female serum and FF were inversely associated with the probabilities to obtain good-quality cleavage embryos (p for trend < 0.01). There were significant correlations between follicular Se concentrations and seminal As concentrations and higher quality cleavage embryos (p for trend < 0.01). Moreover, a positive correlation was observed between the female serum Se concentrations and blastocyst formation (p for trend = 0.031). In contrast, a higher follicular Se level was negatively correlated with embryo development at the blastocyst stage (p for trend < 0.01). Regarding the clinical outcomes, a positive association of Se levels in seminal plasma and a negative association of follicular Cd levels was observed with the probabilities of pregnancy (p for trend = 0.006 and 0.035, respectively) and live birth (p for trend = 0.014 and 0.027, respectively). The results indicate that exposure to toxic elements (Cr, As and Cd) is associated with intermediate parameters and outcomes of IVF. Furthermore, male Se exposure may be related to better pregnancy outcomes.
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Affiliation(s)
- Shanshan Wu
- Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No.39 Huaxiang Road, Tiexi District, Shenyang, Liaoning, 110022, China; Key Laboratory of Reproductive Dysfunction Disease and Fertility Remodeling of Liaoning Province
| | - Min Wang
- Key Laboratory of Reproductive Dysfunction Disease and Fertility Remodeling of Liaoning Province; Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No.39 Huaxiang Road, Tiexi District, Shenyang, Liaoning, 110022, China
| | - Yu Deng
- School of Public Health, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, 110122, Liaoning, China
| | - Jiahui Qiu
- Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No.39 Huaxiang Road, Tiexi District, Shenyang, Liaoning, 110022, China; Key Laboratory of Reproductive Dysfunction Disease and Fertility Remodeling of Liaoning Province
| | - Xinyi Zhang
- Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No.39 Huaxiang Road, Tiexi District, Shenyang, Liaoning, 110022, China; Key Laboratory of Reproductive Dysfunction Disease and Fertility Remodeling of Liaoning Province
| | - Jichun Tan
- Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No.39 Huaxiang Road, Tiexi District, Shenyang, Liaoning, 110022, China; Key Laboratory of Reproductive Dysfunction Disease and Fertility Remodeling of Liaoning Province.
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Perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) induce epigenetic alterations and promote human breast cell carcinogenesis in vitro. Arch Toxicol 2020; 94:3893-3906. [PMID: 32700164 PMCID: PMC7603464 DOI: 10.1007/s00204-020-02848-6] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 07/09/2020] [Indexed: 12/24/2022]
Abstract
Gene–environment interactions are involved in the development of breast cancer, the tumor type that accounts for the majority of the cancer-related deaths among women. Here, we demonstrate that exposure to PFOS (10 µM) and PFOA (100 µM)—two contaminants ubiquitously found in human blood—for 72 h induced breast epithelial cell (MCF-10A cell line) proliferation and alteration of regulatory cell-cycle proteins (cyclin D1, CDK6, p21, p53, p27, ERK 1/2 and p38) that persisted after a multitude of cell divisions. The contaminants also promoted cell migration and invasion by reducing the levels of E-cadherin, occludin and β-integrin in the unexposed daughter cells. The compounds further induced an increase in global DNA methylation and differentially altered histone modifications, epigenetic mechanisms implicated in tumorigenesis. This mechanistic evidence for PFOS- and PFOA-induced malignant transformation of human breast cells supports a role of these abundant contaminants in the development and progression of breast cancer. Increased knowledge of contaminant-induced effects and their contribution to breast tumorigenesis is important for a better understanding of gene–environment interactions in the etiology of breast cancer.
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18
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Fathoming the link between anthropogenic chemical contamination and thyroid cancer. Crit Rev Oncol Hematol 2020; 150:102950. [DOI: 10.1016/j.critrevonc.2020.102950] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 02/12/2020] [Accepted: 04/02/2020] [Indexed: 01/08/2023] Open
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Wang L, Yang X, Zhang A, Bidegain G, Li R, Na G, Yuan X. Distribution patterns and ecological risk of endocrine-disrupting chemicals at Qingduizi Bay (China): A preliminary survey in a developing maricultured bay. MARINE POLLUTION BULLETIN 2019; 146:915-920. [PMID: 31426236 DOI: 10.1016/j.marpolbul.2019.07.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 07/09/2019] [Accepted: 07/12/2019] [Indexed: 06/10/2023]
Abstract
The occurrence and estrogenic activities of seven phenolic endocrine-disrupting chemical (EDC) compounds (nonylphenol (NP), octylphenol (4-OP), 2,4-dichlorophenol (2,4-DCP), 4-tertbutylphenol (4-t-BP), 4-tert-octylphenol (4-t-OP), tetrabromobisphenol A (TBBPA), and bisphenol A (BPA)) in the sediments of Qingduizi Bay (NorthernYellow Sea, China) in superficial sediments were investigated to evaluate their potential ecological impacts on the health of aquaculture organisms. All compounds, except 4-OP and 4-t-BP, were recorded in most sampling sites (1.06-28.07 ng g-1 dw in maricultural ponds (MPs), 1.98-8.22 ng g-1 dw in outer bay (OB)). BPA and 4-t-OP were the predominant EDC compounds in MPs and OB, respectively. Correlation between BPA and 4-t-OP indicated these compounds may share a similar source or pathway. Analyzed estrogenic activity revealed a low risk of total EDCs. The ranking of risk quotient showed 4-t-OP posed a median risk and TBBPA posed a high risk to the aquatic ecosystem.
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Affiliation(s)
- Lili Wang
- National Marine Environmental Monitoring Center, Ministry of Ecology and Environment, Dalian 116023, PR China.
| | - Xiaolong Yang
- National Marine Environmental Monitoring Center, Ministry of Ecology and Environment, Dalian 116023, PR China
| | - Anguo Zhang
- National Marine Environmental Monitoring Center, Ministry of Ecology and Environment, Dalian 116023, PR China
| | - Gorka Bidegain
- Department of Applied Mathematics/Research Centre for Experimental Marine Biology and Biotechnology (PiE), University of the Basque Country, Bilbao/Plentzia, Spain; Gulf Coast Research Laboratory, University of Southern Mississippi, Ocean Springs 39564, MS, USA
| | - Ruijing Li
- National Marine Environmental Monitoring Center, Ministry of Ecology and Environment, Dalian 116023, PR China
| | - Guangshui Na
- National Marine Environmental Monitoring Center, Ministry of Ecology and Environment, Dalian 116023, PR China
| | - Xiutang Yuan
- National Marine Environmental Monitoring Center, Ministry of Ecology and Environment, Dalian 116023, PR China
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Jeong D, Kang JS, Kim KM, Baek SH, Choe S, Pyo J. Simultaneous determination of pyrethroids and their metabolites in human plasma using liquid chromatography tandem mass spectrometry. Forensic Sci Int 2019; 302:109846. [DOI: 10.1016/j.forsciint.2019.06.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 05/20/2019] [Accepted: 06/05/2019] [Indexed: 10/26/2022]
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21
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Souza ACF, Ervilha LOG, Coimbra JLP, Bastos DSS, Guimarães SEF, Machado-Neves M. Reproductive disorders in female rats after prenatal exposure to sodium arsenite. J Appl Toxicol 2019; 40:214-223. [PMID: 31429093 DOI: 10.1002/jat.3897] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 06/27/2019] [Accepted: 07/30/2019] [Indexed: 11/07/2022]
Abstract
Arsenic is a metalloid widely found in the environment in organic and inorganic forms. Exposure to inorganic arsenic forms via drinking water has been associated with an increased incidence of negative health effects, including reproductive disorders and dysfunction of the endocrine system. However, the impact of arsenic exposure on female reproductive development is still unclear. Therefore, in the present study, we evaluated the effects of prenatal exposure to arsenic on the initial sexual development and puberty onset, and in the morphology of the female reproductive organs, estrous cycle regularity and fertility parameters during adulthood. To do that, pregnant female Wistar rats were exposed to 10 mg/L sodium arsenite via drinking water from gestational day (GD) 1 until GD 21 and the female offspring was evaluated in different postnatal days. Our results showed that prenatal arsenic exposure induced a decrease of litter weight and morphological masculinization in females at postnatal day 1. Moreover, these females had a delay in the age of puberty onset and alteration in estrous cycle number and length. During adulthood, females from the sodium arsenite group showed an increase in endometrium, myometrium and perimetrium areas, and an imbalance in uterine antioxidant enzyme activity. These animals also presented an increase in post-implantation loss and reabsorption number, leading to reduced viable fetus number. In conclusion, prenatal arsenic exposure in rats was able to promote female masculinization, alter sexual development and impair reproductive performance.
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Affiliation(s)
- Ana Cláudia Ferreira Souza
- Department of Animal Biology, Universidade Federal Rural do Rio de Janeiro, Rio de Janeiro, Brazil
- Department of Animal Science, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | | | | | | | | | - Mariana Machado-Neves
- Department of General Biology, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
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Yousefalizadegan N, Mousavi Z, Rastegar T, Razavi Y, Najafizadeh P. Reproductive toxicity of manganese dioxide in forms of micro- and nanoparticles in male rats. Int J Reprod Biomed 2019; 17:ijrm.v17i5.4603. [PMID: 31435611 PMCID: PMC6653491 DOI: 10.18502/ijrm.v17i5.4603] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 01/22/2018] [Accepted: 04/11/2018] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Manganese Dioxide (MnO2 ) has long been used in industry, and its application has recently been increasing in the form of nanoparticle. Objective: The present study was an attempt to assess the effects of MnO2 nanoparticles on spermatogenesis in male rats. MATERIALS AND METHODS Micro- and nanoparticles of MnO2 were injected (100 mg/kg) subcutaneously to male Wistar rats (150 ± 20 gr) once a week for a period of 4 weeks, and the vehicle group received only normal saline (each group included 8 rats). The effect of these particles on the bodyweight, number of sperms, spermatogonia, spermatocytes, diameter of seminiferous tubes, testosterone, estrogen, follicle stimulating factor, and the motility of sperms were evaluated and then compared among the control and vehicle groups as the criteria for spermatogenesis. RESULTS The results showed that a chronic injection of MnO2 nanoparticles caused a significant decrease in the number of sperms, spermatogonia, spermatocytes, diameter of seminiferous tubes (p < 0.001) and in the motility of sperms. However, no significant difference was observed in the weight of prostate, epididymis, left testicle, estradiol (p = 0.8) and testosterone hormone (p = 0.2). CONCLUSION It seems that the high oxidative power of both particles was the main reason for the disturbances in the function of the testis. It is also concluded that these particles may have a potential reproductive toxicity in adult male rats. Further studies are thus needed to determine its mechanism of action upon spermatogenesis.
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Affiliation(s)
- Narges Yousefalizadegan
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran, Iran.
| | - Zahra Mousavi
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran, Iran.
| | - Tayebeh Rastegar
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
| | - Yasaman Razavi
- Cellular Molecular Research Center Iran University of Medical Sciences, Tehran, Iran.
| | - Parvaneh Najafizadeh
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran, Iran.
- Department of Pharmacology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran.
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Tulić L, Vidaković S, Tulić I, Ćurčić M, Bulat Z. Toxic Metal and Trace Element Concentrations in Blood and Outcome of In Vitro Fertilization in Women. Biol Trace Elem Res 2019; 188:284-294. [PMID: 29951726 DOI: 10.1007/s12011-018-1421-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 06/20/2018] [Indexed: 01/20/2023]
Abstract
The aim of this study was to investigate the association of trace element and toxic metal concentrations in blood and the outcome of in vitro fertilization (IVF). The study included 104 consecutive patients that underwent assisted reproductive technology (ART) procedures. The following parameters were determined: cadmium (Cd), mercury (Hg), arsenic (As), and lead (Pb); and copper (Cu), zinc (Zn), selenium (Se), and magnesium (Mg). Serum samples were obtained before commencing stimulation. Patients with smoking habit had significantly higher Pb concentrations (P = 0.022), as well as higher concentrations of As and Hg but not significantly. All subjects were divided into groups of pregnant and nonpregnant patients. Pregnant patients had lower mean values of Mg (P = 0.009), As (P < 0.05), and Pb (P = 0.034), compared to nonpregnant, and a significant correlation between pregnancy outcome and concentrations of Mg, Cd, and Pb was found. Women who had had delivered had lower Mg (P = 0.009) and Cd (P = 0.014) concentrations. There was a significant correlation of the negative outcome of IVF procedure with higher concentrations of Pb (P = 0.046) and Cd (P = 0.012). In conclusion, our results suggest that there is a difference in Mg, Pb, and Cd concentrations between pregnant and nonpregnant women. There was no association between toxic metals and number and quality of oocytes and embryos, while there was with fertilization rate. Concerning trace elements, we did not find the correlation of trace elements with oocyte number and quality, nor with a number of fertilized oocytes, except for Cu. Patients who were pregnant had lower concentrations of Mg.
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Affiliation(s)
- Lidija Tulić
- Department of In Vitro Fertilization, Clinic of Gynecology and Obstetrics, Clinical Center of Serbia, Koste Todorovica 26, Belgrade, 11000, Serbia.
- Gynecology and Obstetrics, Faculty of Medicine, University of Belgrade, Dr Subotica 8, Belgrade, 11000, Serbia.
| | - Snezana Vidaković
- Department of In Vitro Fertilization, Clinic of Gynecology and Obstetrics, Clinical Center of Serbia, Koste Todorovica 26, Belgrade, 11000, Serbia
- Gynecology and Obstetrics, Faculty of Medicine, University of Belgrade, Dr Subotica 8, Belgrade, 11000, Serbia
| | - Ivan Tulić
- Department of In Vitro Fertilization, Clinic of Gynecology and Obstetrics, Clinical Center of Serbia, Koste Todorovica 26, Belgrade, 11000, Serbia
- Gynecology and Obstetrics, Faculty of Medicine, University of Belgrade, Dr Subotica 8, Belgrade, 11000, Serbia
| | - Marijana Ćurčić
- Department of Toxicology "Akademik Danilo Soldatović," Faculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, Belgrade, 11221, Serbia
| | - Zorica Bulat
- Department of Toxicology "Akademik Danilo Soldatović," Faculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, Belgrade, 11221, Serbia
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Ullah A, Pirzada M, Jahan S, Ullah H, Khan MJ. Bisphenol A analogues bisphenol B, bisphenol F, and bisphenol S induce oxidative stress, disrupt daily sperm production, and damage DNA in rat spermatozoa: a comparative in vitro and in vivo study. Toxicol Ind Health 2019; 35:294-303. [DOI: 10.1177/0748233719831528] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Bisphenol A (BPA) is a well-known endocrine-disrupting chemical with estrogenic activity. The widespread exposure of individuals to BPA is suspected to affect a variety of physiological functions, including reproduction, development, and metabolism. Here we report the mechanisms by which BPA and three of its analogues bisphenol B (BPB), bisphenol F (BPF), and bisphenol S (BPS) cause generation of reactive oxygen species (ROS), sperm DNA damage, and oxidative stress in both in vivo and in vitro rat models. Sperm were incubated with different concentrations (1, 10, and 100 µg/L) of BPA and its analogues BPB, BPF, and BPS for 2 h. BPA and its analogues were observed to increase DNA fragmentation, formation of ROS, and affected levels of superoxide dismutase at higher concentration groups. In an in vivo experiment, rats were exposed to different concentrations (5, 25, and 50 mg/kg/day) of BPA, BPB, BPF, and BPS for 28 days. In the higher dose (50 mg/kg/day) treated groups of BPA and its analogues BPB, BPF, and BPS, DNA damage was observed while the motility of sperm was not affected.
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Affiliation(s)
- Asad Ullah
- Reproductive Physiology Laboratory, Department of Animal Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Madeeha Pirzada
- Reproductive Physiology Laboratory, Department of Animal Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Sarwat Jahan
- Reproductive Physiology Laboratory, Department of Animal Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Hizb Ullah
- Reproductive Physiology Laboratory, Department of Animal Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Muhammad Jamil Khan
- Reproductive Physiology Laboratory, Department of Animal Sciences, Quaid-i-Azam University, Islamabad, Pakistan
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Marotta V, Russo G, Gambardella C, Grasso M, La Sala D, Chiofalo MG, D'Anna R, Puzziello A, Docimo G, Masone S, Barbato F, Colao A, Faggiano A, Grumetto L. Human exposure to bisphenol AF and diethylhexylphthalate increases susceptibility to develop differentiated thyroid cancer in patients with thyroid nodules. CHEMOSPHERE 2019; 218:885-894. [PMID: 30609493 DOI: 10.1016/j.chemosphere.2018.11.084] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 11/09/2018] [Accepted: 11/12/2018] [Indexed: 05/28/2023]
Abstract
Pollutants represent potential threats to the human health, being ubiquitous in the environment and exerting toxicity even at low doses. This study aims at investigating the role of fifteen multiclass organic pollutants, assumed as markers of environmental pollution, most of which exerting endocrine-disrupting activity, in thyroid cancer development. The increasing incidence of differentiated thyroid cancer (DTC) may be related to the rising production and environmental dissemination of pollutants. Fifty-five patients, twenty-seven with diagnosis of benign thyroid nodules and twenty-eight suffering from differentiated thyroid cancer, were enrolled and the concentration levels of seven bisphenols, two phthalates (i.e. di(2-ethylhexyl) phthalate (DEHP) and its main metabolite, mono-(2-ethyl-hexyl) phthalate) (MEHP)), two chlorobenzenes, (1,4-dichlorobenzene and 1,2,4,5-tetrachlorobenzene), and 3 phenol derivatives (2-chlorophenol, 4- nonylphenol, and triclosan) were determined in their serum by using a validated analytical method based on high performance liquid chromatography with ultraviolet tandem fluorescence detection. A significant relationship was found between malignancy and the detection in the serum of both bisphenol AF and DEHP. Indeed, their presence confers a more than fourteen times higher risk of developing differentiated thyroid cancer. Relationship between these two pollutants and the risk of malignancy was dose-independent and not mediated by higher thyroid stimulating hormone levels. Even if a conclusive evidence cannot still be drawn and larger prospective studies are needed, the exposure to low doses of environmental endocrine-disrupting contaminants can be considered consistent with the development of thyroid cancer.
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Affiliation(s)
- Vincenzo Marotta
- Struttura Complessa Chirurgia Oncologica della Tiroide, Istituto Nazionale Tumori - IRCCS - Fondazione G.Pascale, Napoli, Italia, Italy.
| | - Giacomo Russo
- Pharm-Analysis & Bio-Pharm Laboratory, Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via D. Montesano, 49, I-80131, Naples, Italy; Consorzio Interuniversitario INBB, Viale Medaglie d'Oro, 305, I-00136, Rome, Italy
| | - Claudio Gambardella
- Department of Anesthesiologic, Surgical and Emergency Sciences, Division of General and Oncologic Surgery, University of Campania Luigi Vanvitelli, Italy
| | - Marica Grasso
- AOU San Giovanni di Dio e Ruggi D'Aragona, Division of General Surgery, Department of Medicine, Surgery and Dentistry, University of Salerno, Salerno, Italy
| | - Domenico La Sala
- AOU San Giovanni di Dio e Ruggi D'Aragona, Division of Endocrinology and Diabetology, Department of Medicine, Surgery and Dentistry, University of Salerno, Salerno, Italy
| | - Maria Grazia Chiofalo
- Struttura Complessa Chirurgia Oncologica della Tiroide, Istituto Nazionale Tumori - IRCCS - Fondazione G.Pascale, Napoli, Italia, Italy
| | - Raffaella D'Anna
- Struttura Complessa Chirurgia Oncologica della Tiroide, Istituto Nazionale Tumori - IRCCS - Fondazione G.Pascale, Napoli, Italia, Italy
| | - Alessandro Puzziello
- AOU San Giovanni di Dio e Ruggi D'Aragona, Division of General Surgery, Department of Medicine, Surgery and Dentistry, University of Salerno, Salerno, Italy
| | - Giovanni Docimo
- Department of Anesthesiologic, Surgical and Emergency Sciences, Division of General and Oncologic Surgery, University of Campania Luigi Vanvitelli, Italy
| | - Stefania Masone
- Department of Clinical Medicine and Surgery, Federico II University, Naples, Italy
| | - Francesco Barbato
- Pharm-Analysis & Bio-Pharm Laboratory, Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via D. Montesano, 49, I-80131, Naples, Italy; Consorzio Interuniversitario INBB, Viale Medaglie d'Oro, 305, I-00136, Rome, Italy
| | - Annamaria Colao
- Department of Clinical Medicine and Surgery, Federico II University, Naples, Italy
| | - Antongiulio Faggiano
- Department of Clinical Medicine and Surgery, Federico II University, Naples, Italy
| | - Lucia Grumetto
- Pharm-Analysis & Bio-Pharm Laboratory, Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via D. Montesano, 49, I-80131, Naples, Italy; Consorzio Interuniversitario INBB, Viale Medaglie d'Oro, 305, I-00136, Rome, Italy.
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Three-phase carrier-mediated hollow fiber microextraction based on deep eutectic solvent followed by HPLC–UV for determination of raloxifene and ethinylestradiol in pharmaceutical wastewater treatment plants. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2019. [DOI: 10.1007/s13738-018-01572-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Hyun Kim D, Min Choi S, Soo Lim D, Roh T, Jun Kwack S, Yoon S, Kook Kim M, Sil Yoon K, Sik Kim H, Wook Kim D, Lee BM. Risk assessment of endocrine disrupting phthalates and hormonal alterations in children and adolescents. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2018; 81:1150-1164. [PMID: 30415604 DOI: 10.1080/15287394.2018.1543231] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Risk assessment and hormone evaluation were carried out for di(2-ethylhexyl) phthalate (DEHP) and dibutyl phthalate (DBP), endocrine disrupting chemicals (EDCs), in 302 Korean children (n = 223) and adolescents (n = 79) (< age 19). Urinary and serum concentrations of DEHP, MEHP (mono(2-ethylhexyl) phthalate), DBP, MBP (monobutyl phthalate), and PA (phthalic acid, a common final metabolite of phthalates) were detected in children and adolescents. Daily exposure levels were estimated to be 16.45 ± 36.50 μg/kg b.w./day for DEHP, which is one-third of the tolerable daily intake (TDI) value (50 μg/kg b.w./day), but 14 out of 302 participants had a hazard index (HI = intake/TDI) value >1. The mean daily exposure level of DBP was 1.23 ± 1.45 μg/kg b.w./day, which is one-eighth of the TDI value (10 μg/kg b.w./day), but 1 out of 302 participants had a HI value > 1. Positive correlations were observed between serum DBP or MEHP, and serum estradiol (E2) and/or luteinizing hormone (LH) in prepubescent children. In addition, serum MBP levels were found to be negatively correlated with serum triiodothyronine (T3) or thyroxine (T4) in male participants, and serum DEHP levels with serum thyroid stimulating hormone (TSH) in female adolescents. Low-density lipoprotein (LDL) levels were positively correlated with serum PA levels in children and adolescents. DEHP, DBP or its metabolites may be associated with altered hormone levels in children and adolescents. Data suggest that exposure levels of DEHP and DBP in Korean children need to be reduced to levels below TDI to protect them from EDC-mediated toxicities. Abbreviations: DBP: dibutyl phthalate; DEHP: di(2-ethylhexyl) phthalate; E2: estradiol; EDC: endocrine disrupting chemical; EFSA: European Food Safety Authority; FSH: follicle stimulating hormone; HDL: high density lipoprotein; HI: hazard index; LDL: low density lipoprotein; LH: luteinizing hormone; MEHP: mono(2-ethylhexyl) phthalate; MBP: monobutyl phthalate; PA: phthalic acid; PPAR: peroxisome proliferator-activated receptor gamma; PVC: polyvinyl chloride; T3: triiodothyronine; T4: thyroxine; TDI: tolerable daily intake; TG: triglyceride; TSH: thyroid stimulating hormone; UPLC/MS/MS: Ultra Performance Liquid Chromatography/Tandem Mass Spectrometry; WWF: World Wildlife Fund.
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Affiliation(s)
- Dong Hyun Kim
- a Division of Toxicology , College of Pharmacy, Sungkyunkwan University , Suwon , Gyeonggi-do , South Korea
| | - Seul Min Choi
- a Division of Toxicology , College of Pharmacy, Sungkyunkwan University , Suwon , Gyeonggi-do , South Korea
| | - Duck Soo Lim
- a Division of Toxicology , College of Pharmacy, Sungkyunkwan University , Suwon , Gyeonggi-do , South Korea
| | - Taehyun Roh
- a Division of Toxicology , College of Pharmacy, Sungkyunkwan University , Suwon , Gyeonggi-do , South Korea
| | - Seung Jun Kwack
- b College of Natural Science , Changwon National University , Changwon , Gyeongnam , Korea
| | - Sungpil Yoon
- a Division of Toxicology , College of Pharmacy, Sungkyunkwan University , Suwon , Gyeonggi-do , South Korea
| | - Min Kook Kim
- a Division of Toxicology , College of Pharmacy, Sungkyunkwan University , Suwon , Gyeonggi-do , South Korea
| | - Kyung Sil Yoon
- c Lung Cancer Branch , Research Institute, National Cancer Center , Goyang , Gyeonggi-do , South Korea
| | - Hyung Sik Kim
- a Division of Toxicology , College of Pharmacy, Sungkyunkwan University , Suwon , Gyeonggi-do , South Korea
| | - Dong Wook Kim
- d College of Statistics , Sungkyunkwan University , Seoul , South Korea
| | - Byung-Mu Lee
- a Division of Toxicology , College of Pharmacy, Sungkyunkwan University , Suwon , Gyeonggi-do , South Korea
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Alizadeh S, Prasher SO, ElSayed E, Qi Z, Patel RM. Effect of biochar on fate and transport of manure-borne estrogens in sandy soil. J Environ Sci (China) 2018; 73:162-176. [PMID: 30290865 DOI: 10.1016/j.jes.2018.01.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 01/25/2018] [Accepted: 01/25/2018] [Indexed: 06/08/2023]
Abstract
The feasibility of using two types of biochars to reduce steroid hormone pollution from poultry and swine manure application on agricultural land was evaluated. The sorption affinity and desorption resistance of softwood and hardwood biochars were also determined for two estrogen hormones, 17β-estradiol (E2) and its primary metabolite estrone (E1). The softwood and hardwood biochars demonstrated high retention capacity for both estrogens. The effective distribution coefficient (Kdeff) of soil-softwood-derived biochar (SBS450) was significantly higher than soil-hardwood-derived biochar (SBH750), indicating the stronger sorption affinity of SBS450 for estrogens. To validate the laboratory results, a field lysimeter experiment was conducted to study the fate and transport of E2 and E1 in soil and leachate in the presence of 1% softwood-biochar (BS450) in topsoil and to compare it with soil without any amendments. The spatio-temporal distribution of both estrogens was monitored at four depths over a 46-day period. The lysimeters, in which the surface layer of soil was amended with biochar, retained significantly higher concentrations of both estrogen hormones. Although they leached through the soil and were detected in leachates, collected at 1.0m depth, the concentrations were significantly lower in the leachate collected from biochar-amended lysimeters. The result confirmed the efficacy of biochar amendment as a remediation technique to alleviate the manure-borne hormonal pollution of groundwater.
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Affiliation(s)
- Sanaz Alizadeh
- Department of Bioresource Engineering, McGill University, Sainte-Anne-de-Bellevue H9X3V9, Quebec, Canada.
| | - Shiv O Prasher
- Department of Bioresource Engineering, McGill University, Sainte-Anne-de-Bellevue H9X3V9, Quebec, Canada.
| | - Eman ElSayed
- Department of Bioresource Engineering, McGill University, Sainte-Anne-de-Bellevue H9X3V9, Quebec, Canada; Department of Plant Protection, Faculty of Agriculture, Zagazig University, Egypt
| | - Zhiming Qi
- Department of Bioresource Engineering, McGill University, Sainte-Anne-de-Bellevue H9X3V9, Quebec, Canada
| | - Ramanbhai M Patel
- Department of Bioresource Engineering, McGill University, Sainte-Anne-de-Bellevue H9X3V9, Quebec, Canada
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Jackovitz AM, Koistinen KA, Lent EM, Bannon DI, Quinn MJ, Johnson MS. Neuromuscular anomalies following oral exposure to 3-nitro-1,2,4-triazol-5-one (NTO) in a one-generation study with Japanese quail (Coturnix japonica). JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2018; 81:718-733. [PMID: 29939830 DOI: 10.1080/15287394.2018.1485123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Substances used as explosives in munitions by the military often result in environmental releases through manufacturing, testing, training, and combat activities. The toxicity of 3-nitro-1,2,4-triazol-5-one (nitrotriazolone or NTO) was evaluated following oral exposure in Japanese quail (Coturnix japonica) to determine if environmental releases result in unacceptable risks to avian populations. In an acute test at the limit dose (2000 mg/kg), one female was ataxic, exhibited tremors, and showed signs of neurological toxicity approximately 24 h after dosing. In a subsequent one-generation study, parental generation (F0) birds were exposed orally to 1000, 500, 100, or 20mg/kg-day NTO suspended in corn oil. After 5 consecutive days of dosing, 2-week-old birds receiving 1000 mg/kg-day displayed ataxia, convulsions, backward arching of the neck (opisthotonos), and alternated between prostrate inactivity and ataxic wing activity. Birds in the 500 mg/kg-day group exhibited neuromuscular anomalies after 17 days exposure. Ultimately, all of the 1000 mg/kg-day birds and all but one of the 500 mg/kg-day birds met euthanasia criteria and were humanely euthanized prior to behavioral and reproductive evaluation. As such, first-generation (F1) birds were exposed to 100 or 20 mg/kg-day NTO. Mild neuromuscular anomalies occurred in 10% of F1 birds from the 100 mg/kg-day group, but not in birds from 20 mg/kg-day or controls in either generation. Vacuolization of cerebellum and/or the brainstem was observed on histopathologic examination in a dose-dependent manner. Therefore, brain vacuoles and neuromuscular anomalies were identified as critical endpoints in this study. A mean Benchmark Dose (BMD) for brain vacuoles of 62 mg/kg-day was derived for male and female F0-generation quail, which corresponded to a Benchmark Dose Low (BMDL10) of 35 mg/kg-day.
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Affiliation(s)
| | | | - Emily M Lent
- a Toxicology Directorate, Army Public Health Center , MD , USA
| | | | - Michael J Quinn
- a Toxicology Directorate, Army Public Health Center , MD , USA
| | - Mark S Johnson
- a Toxicology Directorate, Army Public Health Center , MD , USA
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30
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Choi SM, Lim DS, Kim MK, Yoon S, Kacew S, Kim HS, Lee BM. Inhibition of di(2-ethylhexyl) phthalate (DEHP)-induced endocrine disruption by co-treatment of vitamins C and E and their mechanism of action. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2018; 81:748-760. [PMID: 29842840 DOI: 10.1080/15287394.2018.1473262] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The endocrine disrupting actions of di(2-ethylhexyl) phthalate (DEHP) on testicular functions are postulated to involve excess free radical generation. Thus the aim of this study was to examine the ability of antioxidant vitamins C and E to prevent DEHP-induced testicular disruption in male Sprague-Dawley (SD) rats. SD male rats were administered DEHP alone or DEHP with vitamin C and/or vitamin E for 30 days. DEHP alone increased the levels of testosterone (T) and reduced estradiol (E2) concentrations. Supplementation with antioxidant vitamins diminished or restored serum T levels noted in DEHP-treated rats to control values. In contrast vitamins C and E increased E2 levels to control in rats administered DEHP. Antioxidants significantly improved the decreased testicular levels of reduced glutathione and activity of superoxide dismutase compared to DEHP-treatment alone. Co-treatment of vitamins C and E also markedly improved the reduced epididymal sperm head counts and elevated levels of malondialdehyde (MDA) or 8-hydroxydeoxyguanosine (8-OHdG) induced by DEHP treatment. These results support the concept that the adverse actions of DEHP may be related to increased free radical generation while co-treatment with vitamins C and E significantly blocked the actions of DEHP on male testicular functions.
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Affiliation(s)
- Seul Min Choi
- a Division of Toxicology, College of Pharmacy , Sungkyunkwan University , Suwon , South Korea
| | - Duck Soo Lim
- a Division of Toxicology, College of Pharmacy , Sungkyunkwan University , Suwon , South Korea
| | - Min Kook Kim
- a Division of Toxicology, College of Pharmacy , Sungkyunkwan University , Suwon , South Korea
| | - Sungpil Yoon
- a Division of Toxicology, College of Pharmacy , Sungkyunkwan University , Suwon , South Korea
| | - Sam Kacew
- b McLaughlin Centre for Population Health Risk Assessment , University of Ottawa , Ottawa , ON , Canada
| | - Hyung Sik Kim
- a Division of Toxicology, College of Pharmacy , Sungkyunkwan University , Suwon , South Korea
| | - Byung-Mu Lee
- a Division of Toxicology, College of Pharmacy , Sungkyunkwan University , Suwon , South Korea
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Rapid Multi-Residue Analysis of Herbicides with Endocrine-Disrupting Properties in Environmental Water Samples Using Ultrasound-Assisted Dispersive Liquid–Liquid Microextraction and Gas Chromatography–Mass Spectrometry. Chromatographia 2018. [DOI: 10.1007/s10337-018-3530-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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32
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Mrema EJ, Ngowi AV, Kishinhi SS, Mamuya SH. Pesticide Exposure and Health Problems Among Female Horticulture Workers in Tanzania. ENVIRONMENTAL HEALTH INSIGHTS 2017; 11:1178630217715237. [PMID: 28690397 PMCID: PMC5484550 DOI: 10.1177/1178630217715237] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Accepted: 05/22/2017] [Indexed: 05/28/2023]
Abstract
Commercialization of horticulture farming, expansion of farms, and the practice of monoculture favor the proliferation of pests, which in turn increases the need for pesticides. Increased exposure to pesticides is associated with inadequate knowledge on the hazardous nature of pesticides, poor hygiene practices, lack of availability of washing facilities, and insufficient adherence to precautionary instructions on pesticide labels. Mitigating the risks posed by pesticides is considered a less compelling interest than alleviating poverty. Women working in horticulture in Tanzania usually have low levels of education and income and lack decision-making power even on matters relating to their own health. This contributes to pesticide exposure and other health challenges. Because of multiple factors, some of which act as study confounders, few studies on exposure to pesticides and health effects have been conducted among women. This review identified factors that contribute to the increased health effects among women working in the horticultural industry and how these effects relate to pesticide exposure.
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Affiliation(s)
| | - Aiwerasia Vera Ngowi
- CORRESPONDING AUTHOR: Aiwerasia Vera Ngowi, Department of Environmental and Occupational Health, School of Public Health and Social Sciences, Muhimbili University of Health and Allied Sciences, P. O. Box 65015, Dar es Salaam, Tanzania.
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Yang X, Huang H, Wang M, Zheng X, Xu J, Xie M. Effect of nonylphenol on the regulation of cell growth in colorectal cancer cells. Mol Med Rep 2017; 16:2211-2216. [PMID: 28656208 DOI: 10.3892/mmr.2017.6817] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Accepted: 04/06/2017] [Indexed: 11/06/2022] Open
Abstract
Nonylphenol (NP) is a well-known endocrine-disrupting chemical (EDC), which can enhance the progression of cancer by functioning as an estrogen‑like factor. In the present study, the effects of different concentrations of NP on COLO205 colorectal cancer (CRC) cells were examined. The results of flow cytometric analysis revealed that NP significantly decreased the proportion of cells in the G0/G1 phase in a dose‑dependent manner, which was accompanied by a marginal increase in the proportions of cells in S and G2/M phases. NP did not induce apoptosis, whereas estradiol (E2) did induce apoptosis. To elucidate the mechanisms underlying the action of NP on COLO205 cells, the transcriptional levels of extracellular signal‑regulated kinase (ERK)1, ERK2 and phosphoinositide 3‑kinase (PI3K) were assessed using reverse transcription‑quantitative polymerase chain reaction analysis. The expressions levels of ERK1, ERK2 and PI3K were increased by treatment with NP in a dose‑dependent manner. On examining protein levels, the expression of PI3K p38 was increased by NP and E2, and the expression of ERK1/2 was increased by NP. The phosphorylation of the ERK protein was significantly increased by treatment with NP at a high concentration (10‑4 M; P<0.01), but significantly decreased by E2 (P<0.01). Two key proteins in the transforming growth factor (TGF)β pathway (c‑Fos and SnoN) were selected for analysis using western blot analysis in the COLO205 cells treated with NP and E2. The expression levels of c‑Fos and SnoN were significantly increased by treatment with E2 (10‑7 M; P<0.01) and NP (10‑7‑10‑4 M; P<0.01). Taken together, these results indicated that NP affected the development of CRC via the ERK signaling pathway and TGFβ pathway.
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Affiliation(s)
- Xuefeng Yang
- Department of Gastrointestinal Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563000, P.R. China
| | - Handong Huang
- Department of Gastrointestinal Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563000, P.R. China
| | - Maijian Wang
- Department of Gastrointestinal Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563000, P.R. China
| | - Xingbin Zheng
- Department of Gastrointestinal Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563000, P.R. China
| | - Jie Xu
- School of Public Health, Zunyi Medical University, Zunyi, Guizhou 563000, P.R. China
| | - Ming Xie
- Department of Gastrointestinal Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563000, P.R. China
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Chen Q, Gundlach M, Yang S, Jiang J, Velki M, Yin D, Hollert H. Quantitative investigation of the mechanisms of microplastics and nanoplastics toward zebrafish larvae locomotor activity. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 584-585:1022-1031. [PMID: 28185727 DOI: 10.1016/j.scitotenv.2017.01.156] [Citation(s) in RCA: 401] [Impact Index Per Article: 57.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 01/22/2017] [Accepted: 01/23/2017] [Indexed: 05/08/2023]
Abstract
This study investigated the direct and indirect toxic effects of microplastics and nanoplastics toward zebrafish (Danio rerio) larvae locomotor activity. Results showed that microplastics alone exhibited no significant effects except for the upregulated zfrho visual gene expression; whereas nanoplastics inhibited the larval locomotion by 22% during the last darkness period, and significantly reduced larvae body length by 6%, inhibited the acetylcholinesterase activity by 40%, and upregulated gfap, α1-tubulin, zfrho and zfblue gene expression significantly. When co-exposed with 2μg/L 17 α-ethynylestradiol (EE2), microplastics led to alleviation on EE2's inhibition effect on locomotion, which was probably due to the decreased freely dissolved EE2 concentration. However, though nanoplastics showed stronger adsorption ability for EE2, the hypoactivity phenomenon still existed in the nanoplastics co-exposure group. Moreover, when co-exposed with a higher concentration of EE2 (20μg/L), both plastics showed an enhanced effect on the hypoactivity. Principal component analysis was performed to reduce data dimensions and four principal components were reconstituted in terms of oxidative stress, body length, nervous and visual system related genes explaining 84% of total variance. Furthermore, oxidative damage and body length reduction were evaluated to be main reasons for the hypoactivity. Therefore, nanoplastics alone suppressed zebrafish larvae locomotor activity and both plastic particles can change the larvae swimming behavior when co-exposed with EE2. This study provides new insights into plastic particles' effects on zebrafish larvae, improving the understanding of their environmental risks to the aquatic environment.
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Affiliation(s)
- Qiqing Chen
- State Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China; Institute for Environmental Research, Department of Ecosystem Analysis, ABBt - Aachen Biology and Biotechnology, RWTH Aachen University, 1 Worringerweg, 52074 Aachen, Germany; State Key Laboratory of Marine Geology, School of Ocean and Earth Science, Tongji University, 1239 Siping Road, Shanghai 200092, PR China
| | - Michael Gundlach
- Institute for Environmental Research, Department of Ecosystem Analysis, ABBt - Aachen Biology and Biotechnology, RWTH Aachen University, 1 Worringerweg, 52074 Aachen, Germany
| | - Shouye Yang
- State Key Laboratory of Marine Geology, School of Ocean and Earth Science, Tongji University, 1239 Siping Road, Shanghai 200092, PR China
| | - Jing Jiang
- State Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China
| | - Mirna Velki
- Institute for Environmental Research, Department of Ecosystem Analysis, ABBt - Aachen Biology and Biotechnology, RWTH Aachen University, 1 Worringerweg, 52074 Aachen, Germany
| | - Daqiang Yin
- State Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China.
| | - Henner Hollert
- State Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China; Institute for Environmental Research, Department of Ecosystem Analysis, ABBt - Aachen Biology and Biotechnology, RWTH Aachen University, 1 Worringerweg, 52074 Aachen, Germany
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Blazer VS, Walsh HL, Braham RP, Hahn CM, Mazik P, McIntyre PB. Tumours in white suckers from Lake Michigan tributaries: pathology and prevalence. JOURNAL OF FISH DISEASES 2017; 40:377-393. [PMID: 27553424 DOI: 10.1111/jfd.12520] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 05/25/2016] [Accepted: 05/25/2016] [Indexed: 05/27/2023]
Abstract
The prevalence and histopathology of neoplastic lesions were assessed in white sucker Catostomus commersonii captured at two Lake Michigan Areas of Concern (AOCs), the Sheboygan River and Milwaukee Estuary. Findings were compared to those observed at two non-AOC sites, the Root and Kewaunee rivers. At each site, approximately 200 adult suckers were collected during their spawning migration. Raised skin lesions were observed at all sites and included discrete white spots, mucoid plaques on the body surface and fins and large papillomatous lesions on lips and body. Microscopically, hyperplasia, papilloma and squamous cell carcinoma were documented. Liver neoplasms were also observed at all sites and included both hepatocellular and biliary tumours. Based on land use, the Kewaunee River was the site least impacted by human activities previously associated with fish tumours and had significantly fewer liver neoplasms when compared to the other sites. The proportion of white suckers with liver tumours followed the same patterns as the proportion of urban land use in the watershed: the Milwaukee Estuary had the highest prevalence, followed by the Root, Sheboygan and Kewaunee rivers. The overall skin neoplasm (papilloma and carcinoma) prevalence did not follow the same pattern, although the percentage of white suckers with squamous cell carcinoma exhibited a similar relationship to land use. Testicular tumours (seminoma) were observed at both AOC sites but not at the non-AOC sites. Both skin and liver tumours were significantly and positively associated with age but not sex.
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Affiliation(s)
- V S Blazer
- Fish Health Branch, Leetown Science Center, U.S. Geological Survey, Kearneysville, WV, USA
| | - H L Walsh
- Division of Forestry and Natural Resources, West Virginia University, Morgantown, WV, USA
| | - R P Braham
- Fish Health Branch, Leetown Science Center, U.S. Geological Survey, Kearneysville, WV, USA
| | - C M Hahn
- Fish Health Branch, Leetown Science Center, U.S. Geological Survey, Kearneysville, WV, USA
| | - P Mazik
- West Virginia Cooperative Fish and Wildlife Unit, U.S. Geological Survey, West Virginia University, Morgantown, WV, USA
| | - P B McIntyre
- Center for Limnology, University of Wisconsin-Madison, Madison, WI, USA
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Mutagenic and carcinogenic structural alerts and their mechanisms of action. Arh Hig Rada Toksikol 2016; 67:169-182. [DOI: 10.1515/aiht-2016-67-2801] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 09/01/2016] [Indexed: 12/24/2022] Open
Abstract
Abstract
Knowing the mutagenic and carcinogenic properties of chemicals is very important for their hazard (and risk) assessment. One of the crucial events that trigger genotoxic and sometimes carcinogenic effects is the forming of adducts between chemical compounds and nucleic acids and histones. This review takes a look at the mechanisms related to specific functional groups (structural alerts or toxicophores) that may trigger genotoxic or epigenetic effects in the cells. We present up-to-date information about defined structural alerts with their mechanisms and the software based on this knowledge (QSAR models and classification schemes).
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Lai FN, Liu JC, Li L, Ma JY, Liu XL, Liu YP, Zhang XF, Chen H, De Felici M, Dyce PW, Shen W. Di (2-ethylhexyl) phthalate impairs steroidogenesis in ovarian follicular cells of prepuberal mice. Arch Toxicol 2016; 91:1279-1292. [DOI: 10.1007/s00204-016-1790-z] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 07/05/2016] [Indexed: 11/30/2022]
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38
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Tait PW, McMichael AJ, Hanna EG. Determinants of health: the contribution of the natural environment. Aust N Z J Public Health 2015; 38:104-7. [PMID: 24690045 DOI: 10.1111/1753-6405.12212] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Affiliation(s)
- Peter W Tait
- Ecology and Environment Special Interest Group, Public Health Association Australia
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39
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Shapiro GD, Dodds L, Arbuckle TE, Ashley-Martin J, Fraser W, Fisher M, Taback S, Keely E, Bouchard MF, Monnier P, Dallaire R, Morisset A, Ettinger AS. Exposure to phthalates, bisphenol A and metals in pregnancy and the association with impaired glucose tolerance and gestational diabetes mellitus: The MIREC study. ENVIRONMENT INTERNATIONAL 2015; 83:63-71. [PMID: 26101084 DOI: 10.1016/j.envint.2015.05.016] [Citation(s) in RCA: 150] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 05/11/2015] [Accepted: 05/24/2015] [Indexed: 05/22/2023]
Abstract
BACKGROUND Studies from several countries report increases in rates of gestational diabetes mellitus (GDM) over recent decades. Exposure to environmental chemicals could contribute to this trend. OBJECTIVES To determine the associations between plasticisers and metals measured in early pregnancy with impaired glucose tolerance (IGT) and GDM in a Canadian pregnancy cohort. METHODS Women enrolled in the Maternal-Infant Research on Environmental Chemicals (MIREC) Study were included if they had a singleton delivery and did not have pre-existing diabetes. Eleven phthalate metabolites and total bisphenol A (BPA) were measured in first-trimester urine samples, and four metals (lead, cadmium, mercury and arsenic) were measured in first-trimester blood samples. IGT and GDM were assessed in accordance with standard guidelines by chart review. Chemical concentrations were grouped by quartiles, and associations with outcomes were examined using logistic regression with adjustment for maternal age, race, pre-pregnancy BMI, and education. Restricted cubic spline analysis was performed to help assess linearity and nature of any dose-response relationships. RESULTS Of 2001 women recruited into the MIREC cohort, 1274 met the inclusion criteria and had outcome data and biomonitoring data measured for at least one of the chemicals we examined. Elevated odds of GDM were observed in the highest quartile of arsenic exposure (OR = 3.7, 95% CI = 1.4-9.6) in the adjusted analyses. A significant dose-response relationship was observed in a cubic spline model between arsenic and odds of GDM (p < 0.01). No statistically significant associations were observed between phthalates or BPA or other metals with IGT or GDM. CONCLUSIONS Our findings add to the growing body of evidence supporting the role of maternal arsenic exposure as a risk factor for gestational diabetes.
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Affiliation(s)
- G D Shapiro
- Department of Social and Preventive Medicine, Université de Montréal, Montréal, Quebec, Canada; CHU Sainte-Justine Research Centre, Université de Montréal, Montréal, Quebec, Canada
| | - L Dodds
- Dalhousie University, Halifax, Nova Scotia, Canada.
| | | | | | - W Fraser
- CHU Sainte-Justine Research Centre, Université de Montréal, Montréal, Quebec, Canada; Department of Obstetrics and Gynecology, Université de Montréal, Montréal, Quebec, Canada
| | - M Fisher
- Health Canada, Ottawa, Ontario, Canada
| | - S Taback
- University of Manitoba, Winnipeg, Manitoba, Canada
| | - E Keely
- University of Ottawa, Ottawa, Ontario, Canada
| | - M F Bouchard
- CHU Sainte-Justine Research Centre, Université de Montréal, Montréal, Quebec, Canada
| | - P Monnier
- McGill University, Montréal, Quebec, Canada
| | - R Dallaire
- Laval University, Québec City, Quebec, Canada
| | - As Morisset
- CHU Sainte-Justine Research Centre, Université de Montréal, Montréal, Quebec, Canada
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Smirnova L, Hogberg HT, Leist M, Hartung T. Developmental neurotoxicity - challenges in the 21st century and in vitro opportunities. ALTEX-ALTERNATIVES TO ANIMAL EXPERIMENTATION 2015; 31:129-56. [PMID: 24687333 DOI: 10.14573/altex.1403271] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Accepted: 03/28/2014] [Indexed: 11/23/2022]
Abstract
In recent years neurodevelopmental problems in children have increased at a rate that suggests lifestyle factors and chemical exposures as likely contributors. When environmental chemicals contribute to neurodevelopmental disorders developmental neurotoxicity (DNT) becomes an enormous concern. But how can it be tackled? Current animal test- based guidelines are prohibitively expensive, at $ 1.4 million per substance, while their predictivity for human health effects may be limited, and mechanistic data that would help species extrapolation are not available. A broader screening for substances of concern requires a reliable testing strategy, applicable to larger numbers of substances, and sufficiently predictive to warrant further testing. This review discusses the evidence for possible contributions of environmental chemicals to DNT, limitations of the current test paradigm, emerging concepts and technologies pertinent to in vitro DNT testing and assay evaluation, as well as the prospect of a paradigm shift based on 21st century technologies.
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Affiliation(s)
- Lena Smirnova
- Centers for Alternatives to Animal Testing (CAAT) at Johns Hopkins Bloomberg School of Public Health, USA
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Lima D, Castro LFC, Coelho I, Lacerda R, Gesto M, Soares J, André A, Capela R, Torres T, Carvalho AP, Santos MM. Effects of Tributyltin and Other Retinoid Receptor Agonists in Reproductive-Related Endpoints in the Zebrafish (Danio rerio). JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2015; 78:747-60. [PMID: 26090559 DOI: 10.1080/15287394.2015.1028301] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Both field and experimental data examined the influence of exposure to environmental contaminant tributyltin (TBT) on marine organisms. Although most attention focused on the imposex phenomenon in gastropods, adverse effects were also observed in other taxonomic groups. It has been shown that imposex induction involves modulation of retinoid signaling in gastropods. Whether TBT influences similar pathways in fish is yet to be addressed. In this study, larvae of the model teleost Danio rerio were exposed to natural retinoids, all-trans-retinoic acid, 9-cis-retinoic acid, and all-trans-retinol, as well as to the RXR synthetic pan-agonist methoprene acid (MA) and to TBT. Larvae were exposed to TBT from 5 days post fertilization (dpf) to adulthood, and reproductive capacity was assessed and correlated with mode of action. TBT significantly decreased fecundity at environmentally relevant levels at 1 μg TBT Sn/g in diet. Interestingly, in contrast to previous reports, TBT altered zebrafish sex ratio toward females, whereas MA exposure biased sex toward males. Since fecundity was significantly altered in the TBT-exposed group with up to 62% decrease, the potentially affected pathways were investigated. Significant downregulation was observed in brain mRNA levels of aromatase b (CYP19a1b) in females and peroxisome proliferator activated receptor gamma (PPARg) in both males and females, suggesting an involvement of these pathways in reproductive impairment associated with TBT.
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Affiliation(s)
- Daniela Lima
- a Interdisciplinary Centre for Marine and Environmental Research (CIIMAR), CIMAR Associate Laboratory , University of Porto Porto , Portugal
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In SJ, Kim SH, Go RE, Hwang KA, Choi KC. Benzophenone-1 and nonylphenol stimulated MCF-7 breast cancer growth by regulating cell cycle and metastasis-related genes via an estrogen receptor α-dependent pathway. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2015; 78:492-505. [PMID: 25849766 DOI: 10.1080/15287394.2015.1010464] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Endocrine-disrupting chemicals (EDC) are defined as environmental compounds that produce adverse health manifestations in mammals by disrupting the endocrine system. Benzophenone-1 (2,4-dihydroxybenzophenone, BP1) and nonylphenol (NP), which are discharged from numerous industrial products, are known EDC. The aim of this study was to examine the effects of BP1 and NP on proliferation and metastasis of MCF-7 human breast cancer cells expressing estrogen receptors (ER). Treatment with BP1 (10⁻⁵-10⁻⁷ M) and NP (10⁻⁶-10⁻⁷ M) promoted proliferation of MCF-7 cells similar to the positive control 17 -beta-estradiol (E2). When ICI 182,780, an ER antagonist, was co-incubated with E2, BP1, or NP, proliferation of MCF-7 cells returned to the level of a control. Addition of BP1 or NP markedly induced migration of MCF-7 cells similar to E2. To elucidate the underlying molecular mechanisms produced by these EDC, alterations in transcriptional and translational levels of proliferation and metastasis-related markers, including cyclin D1, p21, and cathepsin D, were determined. Data showed increase in expression of cyclin D1 and cathepsin D and decrease in p21 at both transcriptional and translational levels. However, BP1- or NP-induced alterations of these genes were blocked by ICI 182,780, suggesting that changes in expression of these genes may be regulated by an ERα-dependent pathway. In conclusion, BP1 and NP may accelerate growth of MCF-7 breast cancer cells by regulating cell cycle-related genes and promote cancer metastasis through amplification of cathepsin D.
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Affiliation(s)
- Sol-Ji In
- a Laboratory of Biochemistry and Immunology, College of Veterinary Medicine , Chungbuk National University , Cheongju , Chungbuk , Republic of Korea
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Tsimbiri PF, Moturi WN, Sawe J, Henley P, Bend JR. Health Impact of Pesticides on Residents and Horticultural Workers in the Lake Naivasha Region, Kenya. ACTA ACUST UNITED AC 2015. [DOI: 10.4236/odem.2015.32004] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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44
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Silins I, Korhonen A, Stenius U. Evaluation of carcinogenic modes of action for pesticides in fruit on the Swedish market using a text-mining tool. Front Pharmacol 2014; 5:145. [PMID: 25002848 PMCID: PMC4066588 DOI: 10.3389/fphar.2014.00145] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Accepted: 06/02/2014] [Indexed: 12/16/2022] Open
Abstract
Toxicity caused by chemical mixtures has emerged as a significant challenge for toxicologists and risk assessors. Information on individual chemicals' modes of action is an important part of the hazard identification step. In this study, an automatic text mining-based tool was employed as a method to identify the carcinogenic modes of action of pesticides frequently found in fruit on the Swedish market. The current available scientific literature on the 26 most common pesticides found in apples and oranges was evaluated. The literature was classified according to a taxonomy that specifies the main type of scientific evidence used for determining carcinogenic properties of chemicals. The publication profiles of many pesticides were similar, containing evidence for both genotoxic and non-genotoxic modes of action, including effects such as oxidative stress, chromosomal changes and cell proliferation. We also found that 18 of the 26 pesticides studied here had previously caused tumors in at least one animal species, findings which support the mode of action data. This study shows how a text-mining tool could be used to identify carcinogenic modes of action for a group of chemicals in large quantities of text. This strategy could support the risk assessment process of chemical mixtures.
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Affiliation(s)
- Ilona Silins
- Institute of Environmental Medicine, Karolinska Institutet Stockholm, Sweden ; Computer Laboratory, University of Cambridge Cambridge, UK
| | - Anna Korhonen
- Computer Laboratory, University of Cambridge Cambridge, UK
| | - Ulla Stenius
- Institute of Environmental Medicine, Karolinska Institutet Stockholm, Sweden
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Guerra MT, Silva RF, Luchiari HR, Sanabria M, Kempinas WDG. Perinatal androgenic exposure and reproductive health effects female rat offspring. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2014; 77:375-389. [PMID: 24617542 DOI: 10.1080/15287394.2013.874881] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Environmental contaminants known as endocrine-disrupting chemicals (EDC) have been associated with adverse effects on reproductive processes. These chemicals may mimic or antagonize endogenous hormones, disrupting reproductive functions. Although preliminary studies focused on environmental estrogens, the presence of compounds with androgenic activity has also been described. This study examines exposure of female pregnant and lactating rats to low doses of androgens and assesses potential effects on female offspring. Pregnant Wistar rats were exposed to testosterone propionate (TP) at doses of 0.05, 0.1, or 0.2 mg/kg or corn oil (vehicle), subcutaneously, to determine influence on reproductive health of female offspring. There were two exposure groups: (1) rats treated from gestational day (GD) 12 until GD 20; and (2) animals treated from GD 12 until the end of lactation. Perinatal exposure to TP produced increased anogenital distance after birth and diminished height of uterine glandular epithelium at puberty in animals exposed to 0.2 mg/kg. However, these alterations were not sufficient to impair sexual differentiation and normal physiology of the female rat reproductive tract.
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Affiliation(s)
- Marina T Guerra
- a Graduate Program in Cell and Structural Biology , Institute of Biology, State University of Campinas-UNICAMP , Campinas , São Paulo , Brazil
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Yoon K, Kwack SJ, Kim HS, Lee BM. Estrogenic endocrine-disrupting chemicals: molecular mechanisms of actions on putative human diseases. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART B, CRITICAL REVIEWS 2014; 17:127-74. [PMID: 24749480 DOI: 10.1080/10937404.2014.882194] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Endocrine-disrupting chemicals (EDC), including phthalates, bisphenol A (BPA), phytoestrogens such as genistein and daidzein, dichlorodiphenyltrichloroethane (DDT), and 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), are associated with a variety of adverse health effects in organisms or progeny by altering the endocrine system. Environmental estrogens, including BPA, phthalates, and phytoestrogens, are the most extensively studied and are considered to mimic the actions of endogenous estrogen, 17β-estradiol (E2). Diverse modes of action of estrogen and estrogen receptors (ERα and ERβ) have been described, but the mode of action of estrogenic EDC is postulated to be more complex and needs to be more clearly elucidated. This review examines the adverse effects of estrogenic EDC on male or female reproductive systems and molecular mechanisms underlying EDC effects that modulate ER-mediated signaling. Mechanisms of action for estrogenic EDC may involve both ER-dependent and ER-independent pathways. Recent findings from systems toxicology of examining estrogenic EDC are also discussed.
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Affiliation(s)
- Kyungsil Yoon
- a Lung Cancer Branch , Research Institute, National Cancer Center , Goyang , Gyeonggi-do , South Korea
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47
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Dalvie MA, Sosan MB, Africa A, Cairncross E, London L. Environmental monitoring of pesticide residues from farms at a neighbouring primary and pre-school in the Western Cape in South Africa. THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 466-467:1078-1084. [PMID: 23995259 DOI: 10.1016/j.scitotenv.2013.07.099] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2013] [Revised: 05/18/2013] [Accepted: 07/22/2013] [Indexed: 05/27/2023]
Abstract
Concerns about pesticide drift from neighbouring vineyards affecting children attending school on a farm adjacent to an urban suburb of Cape Town, Western Cape in South Africa were investigated. The study involved a before-after design, measuring levels of environmental exposure before and during pesticide application activities on the neighbouring farms. Samples were collected in air, dust and grass cuttings at the preschool and primary school located on the farms during September-December in 2010 and tested for pesticides using multi-pesticide methods. Eleven different pesticides were detected in the various samples. Six of these chemicals (endosulfan, dimethomorph, penconazole, cyprodinil, boscalid and bromopropylate) were on the spraying schedules of the two farms neighbouring the schools and the timing and location of detection were generally consistent with farm application. Three pesticides detected (chlorpyrifos, cypermethrin, permethrin) are agents commonly used in household applications and one (pyriproxifen) is used in pet treatment agents. Kresoxim-methyl, the other pesticide detected, is likely to come from drift from other farms in the area. The concentration of pesticides was all lower than 0.1 μg/m(3) in air and 0.1 μg/kg in dust and grass apart from permethrin and cypermethrin. The findings confirm the presence of drift onto the school premises and concentrations found in this study were generally low in comparison to that detected in other studies. Regular monitoring to track the effectiveness of containment and mitigation measures that reduce drift is recommended.
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Affiliation(s)
- M A Dalvie
- Centre for Occupational and Environmental Health Research, School of Public Health and Family Medicine, University of Cape Town, Faculty of Health Sciences, Anzio Road, Observatory 7925, South Africa
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48
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Park MA, Choi KC. Effects of 4-nonylphenol and bisphenol A on stimulation of cell growth via disruption of the transforming growth factor-β signaling pathway in ovarian cancer models. Chem Res Toxicol 2013; 27:119-28. [PMID: 24308608 DOI: 10.1021/tx400365z] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Transforming growth factor β (TGF-β) signaling pathway is a major pathway in cellular processes such as cell growth, apoptosis, and cellular homeostasis. The signaling pathway activated by 17β-estadiol (E2) appeared to inhibit the TGF-β signaling pathway by cross-talk with the TGF-β components in estrogen receptor (ER) positive cells. In this study, we examined the inhibitory effects of endocrine disrupting chemicals (EDCs), including 4-nonylphenol (NP), 4-otylphenol (OP), bisphenol A (BPA), and benzophenon-1 (BP-1), in the TGF-β signaling pathway in BG-1 ovarian cancer cells expressing estrogen receptors (ERs). The transcriptional and translational levels of TGF-β related genes were examined by reverse transcription-PCR (RT-PCR), Western blot analysis, and xenograft mouse models of ovarian cancer cells. As a result, treatment with NP, OP, and BPA induced the expressions of SnoN, a TGF-β pathway inhibitor, and c-Fos, a TGF-β target transcription factor. Treatment with NP, BPA, and BP-1 resulted in decreased phosphorylation of Smad3, a downstream target of TGF-β. These results indicate that NP and BPA may stimulate the proliferation of BG-1 cells via inhibition of the TGF-β signaling pathway. In a xenograft mouse model, transplanted BG-1 ovarian cancer cells showed significantly decreased phosphorylation of Smad3 and increased expression of SnoN in the ovarian tumor masses following treatment with E2, NP, or BPA. In parallel with an in vitro model, the expressions of these TGF-β signaling pathway were similarly regulated by NP or BPA in a xenograft mouse model. These results support the fact that the existence of an unproven relationship between EDCs/ER-α and TGF-β signaling pathway and a further study are required in order to verify more profound and distinct mechanism(s) for the disturbance of the TGF-β signaling pathway by diverse EDCs.
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Affiliation(s)
- Min-Ah Park
- Laboratory of Veterinary Biochemistry and Immunology, College of Veterinary Medicine, Chungbuk National University , Cheongju, Chungbuk 361-763, Republic of Korea
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49
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Tseng IL, Yang YF, Yu CW, Li WH, Liao VHC. Phthalates induce neurotoxicity affecting locomotor and thermotactic behaviors and AFD neurons through oxidative stress in Caenorhabditis elegans. PLoS One 2013; 8:e82657. [PMID: 24349328 PMCID: PMC3861438 DOI: 10.1371/journal.pone.0082657] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Accepted: 10/25/2013] [Indexed: 01/05/2023] Open
Abstract
Background Phthalate esters are ubiquitous environmental contaminants and numerous organisms are thus exposed to various levels of phthalates in their natural habitat. Considering the critical, but limited, research on human neurobehavioral outcomes in association with phthalates exposure, we used the nematode Caenorhabditis elegans as an in vivo model to evaluate phthalates-induced neurotoxicity and the possible associated mechanisms. Principal Findings Exposure to phthalates (DEHP, DBP, and DIBP) at the examined concentrations induced behavioral defects, including changes in body bending, head thrashing, reversal frequency, and thermotaxis in C. elegans. Moreover, phthalates (DEHP, DBP, and DIBP) exposure caused toxicity, affecting the relative sizes of cell body fluorescent puncta, and relative intensities of cell bodies in AFD neurons. The mRNA levels of the majority of the genes (TTX-1, TAX-2, TAX-4, and CEH-14) that are required for the differentiation and function of AFD neurons were decreased upon DEHP exposure. Furthermore, phthalates (DEHP, DBP, and DIBP) exposure at the examined concentrations produced elevated intracellular reactive oxygen species (ROS) in C. elegans. Finally, pretreatment with the antioxidant ascorbic acid significantly lowered the intracellular ROS level, ameliorated the locomotor and thermotactic behavior defects, and protected the damage of AFD neurons by DEHP exposure. Conclusions Our study suggests that oxidative stress plays a critical role in the phthalate esters-induced neurotoxic effects in C. elegans.
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Affiliation(s)
- I-Ling Tseng
- Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei, Taiwan
| | - Ying-Fei Yang
- Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei, Taiwan
| | - Chan-Wei Yu
- Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei, Taiwan
| | - Wen-Hsuan Li
- Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei, Taiwan
| | - Vivian Hsiu-Chuan Liao
- Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei, Taiwan
- * E-mail:
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50
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Genotoxic effects of environmental endocrine disruptors on the aquatic insect Chironomus riparius evaluated using the comet assay. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2013; 758:41-7. [DOI: 10.1016/j.mrgentox.2013.09.005] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 09/09/2013] [Accepted: 09/12/2013] [Indexed: 11/20/2022]
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