251
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Maske P, Dighe V, Vanage G. n-butylparaben exposure during perinatal period impairs fertility of the F1 generation female rats. CHEMOSPHERE 2018; 213:114-123. [PMID: 30218874 DOI: 10.1016/j.chemosphere.2018.08.130] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 08/24/2018] [Accepted: 08/25/2018] [Indexed: 06/08/2023]
Abstract
Parabens are a class of preservatives widely used in the majority of personal care products, cosmetics, medicines, and food products. However, current literature suggests its plausible role as an endocrine disruptor, hence the present study was undertaken to delineate the effects of n-butyl paraben on perinatally exposed F1 female rats. F0 dams were exposed subcutaneously to n-butylparaben from gestation day 6 (GD 6) to postnatal day (PND) 21 with doses of 10, 100, and 1000 mg/kg Bw/day in corn oil. The F1 female rats were monitored for pubertal development and sexual maturation through PND 30, 45, and 75; which were subsequently subjected to fertility assessment at PND 75. Perinatal exposure to n-butylparaben resulted in- This study documents impaired steroidogenesis and folliculogenesis might be the prime reason for the reduced fertility of F1 female rats. Hence, our study suggests that health monitors need to counsel potential females planning for pregnancy to avoid exposure to parabens.
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Affiliation(s)
- Priyanka Maske
- National Centre for Preclinical Reproductive and Genetic Toxicology, National Institute for Research in Reproductive Health, Parel, Mumbai, Maharashtra 400 012, India
| | - Vikas Dighe
- National Centre for Preclinical Reproductive and Genetic Toxicology, National Institute for Research in Reproductive Health, Parel, Mumbai, Maharashtra 400 012, India
| | - Geeta Vanage
- National Centre for Preclinical Reproductive and Genetic Toxicology, National Institute for Research in Reproductive Health, Parel, Mumbai, Maharashtra 400 012, India.
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252
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Geraudie P, Gerbron M, Lockyer AE, Jobling S, Minier C. Molecular isolation and characterization of the kisspeptin system, KISS and GPR54 genes in roach Rutilus rutilus. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:36759-36764. [PMID: 30293106 DOI: 10.1007/s11356-018-3299-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: 11/14/2017] [Accepted: 09/20/2018] [Indexed: 06/08/2023]
Abstract
The reproduction of vertebrates is regulated by endocrine and neuro-endocrine signaling molecules acting along the brain-pituitary-gonad (BPG) axis. The understanding of the neuroendocrine role played in reproductive function has been recently revolutionized since the KiSS1/GPR54 (KiSS1r) system was discovered in 2003 in human and mice. Kisspeptins, neuropeptides that are encoded by the KiSS genes, have been recognized as essential in the regulation of the gonadotropic axis. They have been shown to play key roles in puberty onset and reproduction by regulating the gonadotropin secretion in mammals while physiological roles in vertebrates are still poorly known. In order to provide new knowledge on basic reproductive physiology in fish as well as new tools to assess impacts of endocrine disrupting compounds (EDCs), the neurotransmitter system, i.e., gene/receptor, KISS/GPR54 might constitute an appropriate biomarker. This study provides new understandings on the neuroendocrine regulation of roach reproduction as well as new molecular tools to be used as biomarkers of endocrine disruption. This work completes the set of biomarkers already validated in this species.
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Affiliation(s)
- Perrine Geraudie
- Akvaplan-Niva, Environmental and Petroleum Research Department, Framsenteret, Tromsø, Norway.
| | - Marie Gerbron
- Laboratory of Ecotoxicology, UMR-I 02 SEBIO-Normandie University, Le Havre, France
| | - Anne E Lockyer
- Institute of Environment, Health and Societies, Brunel University London, Uxbridge, UB8 3PH, UK
| | - Susan Jobling
- Institute of Environment, Health and Societies, Brunel University London, Uxbridge, UB8 3PH, UK
| | - Christophe Minier
- Laboratory of Ecotoxicology, UMR-I 02 SEBIO-Normandie University, Le Havre, France
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253
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Hue NTM, Van Thuong N, Mai PTN, Minh NH. Site-specific bioaccumulation of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/PCDFs) in mothers and their infants living in vicinity of Bien Hoa airbase, Southern Vietnam. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2018; 40:2539-2549. [PMID: 29748732 DOI: 10.1007/s10653-018-0118-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Accepted: 05/04/2018] [Indexed: 06/08/2023]
Abstract
Bien Hoa airbase is located in Dong Nai Province (Southern Vietnam). Several sites within the airbase are highly contaminated by Agent Orange/Dioxin, and thus, they are also commonly named as an Agent Orange/Dioxin hotpot. In the present study, 36 maternal milk samples were collected from primiparas who have lived at least 5 years in four wards, Buu Long, Quang Vinh, Trung Dung and Tan Phong, which are closed to Bien Hoa airbase in order to investigate the level and distribution of Agent Orange/Dioxin exposure in different local communities. The mean concentrations of PCDD/PCDFs in four investigated wards range from 6.4 to 13.6 pgTEQ/g lipid. The highest mean TEQ of PCDD/PCDFs was observed in Buu Long ward (13.6 pgTEQ/g lipid), followed by Tan Phong ward (12.3 pgTEQ/g lipid), and the lowest value was observed in Trung Dung ward (6.4 pgTEQ/g lipid). The mean concentration of 2,3,7,8-TCDD in Buu Long (7.6 pg/g lipid) was approximately 2-6 times higher than those in Tan Phong (3.9 pg/g lipid), Quang Vinh (2.3 pg/g lipid), or Trung Dung (1.2 pg/g lipid). These results imply site-specific exposure to PCDD/PCDFs in different local communities living around Bien Hoa airbase. The mean values of daily intake of dioxin estimated for the breast fed infants living in Buu Long, Quang Vinh, Trung Dung and Tan Phong were about 80, 37.5, 31.7 and 58 pg TEQ/kg bw/day, respectively.
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Affiliation(s)
- Nguyen Thi Minh Hue
- Dioxin Laboratory, Center for Environmental Monitoring (CEM), Vietnam Environment Administration, Nr 556 Nguyen Van Cu Street, Long Bien, Hanoi, Vietnam
| | - Nguyen Van Thuong
- Dioxin Laboratory, Center for Environmental Monitoring (CEM), Vietnam Environment Administration, Nr 556 Nguyen Van Cu Street, Long Bien, Hanoi, Vietnam
| | - Pham Thi Ngoc Mai
- Faculty of Chemistry, Hanoi University of Science, Nr. 19 Le Thanh Tong Street, Hoan Kiem, Hanoi, Vietnam
| | - Nguyen Hung Minh
- Dioxin Laboratory, Center for Environmental Monitoring (CEM), Vietnam Environment Administration, Nr 556 Nguyen Van Cu Street, Long Bien, Hanoi, Vietnam.
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254
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Vela N, Calín M, Yáñez-Gascón MJ, Garrido I, Pérez-Lucas G, Fenoll J, Navarro S. Photocatalytic oxidation of six endocrine disruptor chemicals in wastewater using ZnO at pilot plant scale under natural sunlight. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:34995-35007. [PMID: 29558788 DOI: 10.1007/s11356-018-1716-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 03/09/2018] [Indexed: 06/08/2023]
Abstract
Endocrine disruptors (EDs) are xenobiotics that interfere with the synthesis, secretion, transport, binding, action, and elimination of the natural hormones. In this paper, the photodegradation of six EDs in municipal wastewater treatment plant effluents at pilot plant scale is reported. The EDs were bisphenol A, bisphenol B, diamyl phthalate, butyl benzylphthalate, methyl p-hydroxybenzoate, and ethyl 4-hydroxybenzoate. ZnO as photocatalyst in tandem with Na2S2O8 as electron acceptor under natural sunlight were used. The process was previously optimized under laboratory conditions through a photoreactor under artificial UVA irradiation studying the role of some key operating parameters (catalyst loading, effect of electron acceptor, and pH). Results carried out at pilot plant scale show that addition of ZnO in tandem with Na2S2O8 strongly enhances degradation rates compared with photolytic test. At the end of the irradiation time (240 min), the remaining amounts of EDs ranged from 24% (butyl benzylphthalate) to 0% (< LOQ bisphenol B). The degradation rates were in the order: bisphenols > parabens > phthalates. After the photoperiod, 83% of the initial dissolved organic carbon was removed and toxicity decreased to acceptable values (11% inhibition to Vibrio fisheri). The photodegradation process was found to follow pseudo-first-order kinetic model with DT50 ranging from 5 min (bisphenol B) to 102 min (butyl benzylphthalate). Thereby, photocatalytic oxidation using ZnO is an area of environmental interest for the treatment of polluted water, particularly relevant for Mediterranean countries, where solar irradiation is highly available.
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Affiliation(s)
- Nuria Vela
- Applied Technology Group to Environmental Health, Faculty of Health Science, Catholic University of Murcia, Campus de Los Jerónimos, s/n. Guadalupe, 30107, Murcia, Spain.
| | - May Calín
- Applied Technology Group to Environmental Health, Faculty of Health Science, Catholic University of Murcia, Campus de Los Jerónimos, s/n. Guadalupe, 30107, Murcia, Spain
| | - María J Yáñez-Gascón
- Applied Technology Group to Environmental Health, Faculty of Health Science, Catholic University of Murcia, Campus de Los Jerónimos, s/n. Guadalupe, 30107, Murcia, Spain
| | - Isabel Garrido
- Sustainability and Quality Group of Fruit and Vegetable Products, Murcia Institut of Agri-Food Research and Development, C/ Mayor s/n. La Alberca, 30150, Murcia, Spain
| | - Gabriel Pérez-Lucas
- Department of Agricultural Chemistry, Geology and Pedology, Faculty of Chemistry, University of Murcia, Campus Universitario de Espinardo, 30100, Murcia, Spain
| | - José Fenoll
- Sustainability and Quality Group of Fruit and Vegetable Products, Murcia Institut of Agri-Food Research and Development, C/ Mayor s/n. La Alberca, 30150, Murcia, Spain
| | - Simón Navarro
- Department of Agricultural Chemistry, Geology and Pedology, Faculty of Chemistry, University of Murcia, Campus Universitario de Espinardo, 30100, Murcia, Spain
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255
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Pontelli RCN, Souza MCO, Fantucci MZ, de Andrade M, Rocha EM. The role of endocrine disruptors in ocular surface diseases. Med Hypotheses 2018; 122:157-164. [PMID: 30593402 DOI: 10.1016/j.mehy.2018.11.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 11/05/2018] [Accepted: 11/20/2018] [Indexed: 11/28/2022]
Abstract
Endocrine disruptors are a group of compounds that occur in increasing amounts in the environment. These compounds change the hormone homeostasis of the target organs regulated by those hormones, mostly by binding to their receptors and affecting their signaling pathways. Among the hormones altered by endocrine disruptors are sex hormones, thyroid hormones, and insulin. Studies have documented abnormalities in the reproductive and metabolic systems of various animal species exposed to endocrine disruptors. Endocrine disruptors can play a significant role in ocular diseases once hormone deficiency or excess are involved in the mechanism of that disease. Cataracts, dry eye disease and retinal diseases, such as macular hole and diabetic retinopathy, are some of the frequent problems where hormones have been implicated. We found that some compounds function as endocrine disruptors in the metabolism of body organs and systems. The increasing frequency of dry eye and other ocular diseases indicates the need to better investigate the potential relationships beyond the isolated associations mentioned by patients and documented as rare case reports. The evidence from case-control studies and experimental assays can provide the information necessary to confirm the endocrine effects of these chemicals in the pathophysiology of dry eye disease. We hypothesize that endocrine disruptors may contribute to the increase of ocular diseases, such as dry eye disease, in recent years.
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Affiliation(s)
- Regina C N Pontelli
- Department of Ophthalmology, Otorhinolaryngology and Head & Neck Surgery, Ribeirao Preto Medical School, University of Sao Paulo University of São Paulo, Ribeirão Preto, Sao Paulo, Brazil
| | - Marília C O Souza
- Department of Clinical, Toxicological and Bromatological Analyzes, ASTox - Laboratory of Analytical and Systems Toxicology, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Brazil
| | - Marina Z Fantucci
- Department of Ophthalmology, Otorhinolaryngology and Head & Neck Surgery, Ribeirao Preto Medical School, University of Sao Paulo University of São Paulo, Ribeirão Preto, Sao Paulo, Brazil
| | - Mônica de Andrade
- Department of Ophthalmology, Otorhinolaryngology and Head & Neck Surgery, Ribeirao Preto Medical School, University of Sao Paulo University of São Paulo, Ribeirão Preto, Sao Paulo, Brazil
| | - Eduardo M Rocha
- Department of Ophthalmology, Otorhinolaryngology and Head & Neck Surgery, Ribeirao Preto Medical School, University of Sao Paulo University of São Paulo, Ribeirão Preto, Sao Paulo, Brazil.
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256
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Genome Analysis of Rhodococcus Sp. DSSKP-R-001: A Highly Effective β-Estradiol-Degrading Bacterium. Int J Genomics 2018; 2018:3505428. [PMID: 30510960 PMCID: PMC6230383 DOI: 10.1155/2018/3505428] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 07/25/2018] [Accepted: 08/19/2018] [Indexed: 11/29/2022] Open
Abstract
We screened bacteria that use E2 as its sole source of carbon and energy for growth and identified them as Rhodococcus, and we named them DSSKP-R-001. For a better understanding of the metabolic potential of the strain, whole genome sequencing of Rhodococcus DSSKP-R-001 and annotation of the functional genes were performed. The genomic sketches included a predicted protein-coding gene of approximately 5.4 Mbp with G + C content of 68.72% and 5180. The genome of Rhodococcus strain DSSKP-R-001 consists of three replicons: one chromosome and two plasmids of 5.2, 0.09, and 0.09, respectively. The results showed that there were ten steroid-degrading enzymes distributed in the whole genome of the strain. The existence and expression of estradiol-degrading enzymes were verified by PCR and RTPCR. Finally, comparative genomics was used to compare multiple strains of Rhodococcus. It was found that Rhodococcus DSSKP-R-001 had the highest similarity to Rhodococcus sp. P14 and there were 2070 core genes shared with Rhodococcus sp. P14, Rhodococcus jostii RHA1, Rhodococcus opacus B4, and Rhodococcus equi 103S, showing evolutionary homology. In summary, this study provides a comprehensive understanding of the role of Rhodococcus DSSKP-R-001 in estradiol-efficient degradation of these assays for Rhodococcus. DSSKP-R-001 in bioremediation and evolution within Rhodococcus has important meaning.
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257
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Kim JH, Lee D, Lim H, Kim T, Suk K, Seo J. Risk assessment to human health: Consumer exposure to ingredients in air fresheners. Regul Toxicol Pharmacol 2018; 98:31-40. [DOI: 10.1016/j.yrtph.2018.05.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 05/18/2018] [Accepted: 05/28/2018] [Indexed: 01/06/2023]
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258
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Iida M, Takemoto K. A network biology-based approach to evaluating the effect of environmental contaminants on human interactome and diseases. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 160:316-327. [PMID: 29857236 DOI: 10.1016/j.ecoenv.2018.05.065] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 05/07/2018] [Accepted: 05/24/2018] [Indexed: 06/08/2023]
Abstract
Environmental contaminant exposure can pose significant risks to human health. Therefore, evaluating the impact of this exposure is of great importance; however, it is often difficult because both the molecular mechanism of disease and the mode of action of the contaminants are complex. We used network biology techniques to quantitatively assess the impact of environmental contaminants on the human interactome and diseases with a particular focus on seven major contaminant categories: persistent organic pollutants (POPs), dioxins, polycyclic aromatic hydrocarbons (PAHs), pesticides, perfluorochemicals (PFCs), metals, and pharmaceutical and personal care products (PPCPs). We integrated publicly available data on toxicogenomics, the diseasome, protein-protein interactions (PPIs), and gene essentiality and found that a few contaminants were targeted to many genes, and a few genes were targeted by many contaminants. The contaminant targets were hub proteins in the human PPI network, whereas the target proteins in most categories did not contain abundant essential proteins. Generally, contaminant targets and disease-associated proteins were closely associated with the PPI network, and the closeness of the associations depended on the disease type and chemical category. Network biology techniques were used to identify environmental contaminants with broad effects on the human interactome and contaminant-sensitive biomarkers. Moreover, this method enabled us to quantify the relationship between environmental contaminants and human diseases, which was supported by epidemiological and experimental evidence. These methods and findings have facilitated the elucidation of the complex relationship between environmental exposure and adverse health outcomes.
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Affiliation(s)
- M Iida
- Department of Bioscience and Bioinformatics, Kyushu Institute of Technology, Iizuka, Fukuoka 820-8502, Japan; Center for Marine Environmental Studies (CMES), Ehime University, Bunkyo-cho 2-5, Matsuyama 790-8577, Japan.
| | - K Takemoto
- Department of Bioscience and Bioinformatics, Kyushu Institute of Technology, Iizuka, Fukuoka 820-8502, Japan.
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259
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Ashfield-Crook NR, Woodward Z, Soust M, Kurtböke Dİ. Assessment of the Detrimental Impact of Polyvalent Streptophages Intended to be Used as Biological Control Agents on Beneficial Soil Streptoflora. Curr Microbiol 2018; 75:1589-1601. [PMID: 30242439 DOI: 10.1007/s00284-018-1565-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 09/05/2018] [Indexed: 11/26/2022]
Abstract
Streptophages are currently being investigated to control potato common scab, however, since a majority of streptophages are reported to be polyvalent, their potential to infect beneficial soil streptomycetes during the application process may have unintended consequences. To test this hypothesis, two phytopathogenic fungi, namely Fusarium solani and Rhizoctonia solani, were tested for their detrimental effect on the test crop wheat (Triticum aestivum cv. Gutha). F. solani caused a significant root weight reduction (34%) in the wheat plant and therefore was tested further in the pot trials with actinomycetes present. Sixty-seven streptomycete isolates from a Tasmanian potato farm were screened for their antifungal abilities against the two phytopathogenic fungi. Four actinomycetes found to be strongly antifungal were then tested for their disease-protective abilities against F. solani in pot trials again using wheat. Addition of the streptomycetes into the container media protected the plants against F. solani, indicating that streptomycetes have a disease-suppressive effect. A further pot trial was conducted to evaluate whether these beneficial streptomycete species would be affected by streptophage treatment and subsequently result in an increased risk of fungal infections. When streptophages were added to the pots, the shoot and root growth of wheat declined by 23.6% and 8.0%, respectively, in the pots with the pathogenic fungus compared to the control pots. These differences might suggest that removal of antifungal streptomycetes by polyvalent phages from plant rhizosphere when biocontrol of plant pathogenic streptomycetes (e.g. Streptomyces scabiei) is targeted might encourage secondary fungal infections in the farm environment. The presented data provide preliminary evidence that streptophage treatment of pathogenic streptomycetes may lead to an aggravated disease risk by soil-borne fungal pathogens when naturally present antagonists are removed. As a result, extensive farm site trials are required to determine the long-term detrimental impact of polyvalent streptophage treatments on beneficial soil streptoflora.
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Affiliation(s)
- Nina R Ashfield-Crook
- GeneCology Research Centre and the Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Maroochydore DC, QLD, 4558, Australia
| | - Zachary Woodward
- Terragen Biotech Pty. Ltd., Level 5, 171 Collins Street, PO Box 24082, Melbourne, VIC, 3001, Australia
| | - Martin Soust
- Terragen Biotech Pty. Ltd., Level 5, 171 Collins Street, PO Box 24082, Melbourne, VIC, 3001, Australia
| | - D İpek Kurtböke
- GeneCology Research Centre and the Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Maroochydore DC, QLD, 4558, Australia.
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260
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Zhou Z, Chen B, Qu X, Fu H, Zhu D. Dissolved Black Carbon as an Efficient Sensitizer in the Photochemical Transformation of 17β-Estradiol in Aqueous Solution. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:10391-10399. [PMID: 30130961 DOI: 10.1021/acs.est.8b01928] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Dissolved black carbon (DBC) is an important component of the dissolved organic matter (DOM) pool. Nonetheless, little is known about its role in the photochemical processes of organic contaminants. This study investigated the effect of DBC on the phototransformation of 17β-estradiol in aqueous solutions under simulated sunlight. Four well-studied dissolved humic substances (DHS) were included as comparisons. DBC acted as a very effective sensitizer to facilitate the phototransformation of 17β-estradiol. The apparent quantum yield for 17β-estradiol phototransformation mediated by DBC was approximately six times higher than that by DHS at the same carbon concentration. Quenching experiments suggested that direct reaction with triplet-excited state DBC (3DBC*) was the predominant pathway of 17β-estradiol phototransformation. The higher mediation efficiency of DBC than DHS is likely due to the higher contents of aromatic groups and smaller molecular sizes, which facilitated the generation of 3DBC*. The apparent quantum yield of triplet-excited states production for DBC was 4-8 times higher than that for DHS. The results suggest that 3DBC* may have a considerable contribution to the overall photoreactivity of triplet-excited state DOM in aquatic systems. Our findings also imply that DBC can play an important role in the phototransformation of organic contaminants in the environments.
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Affiliation(s)
- Zhicheng Zhou
- State Key Laboratory of Pollution Control and Resource Reuse/School of the Environment , Nanjing University , Nanjing , Jiangsu 210046 , China
| | - Beining Chen
- State Key Laboratory of Pollution Control and Resource Reuse/School of the Environment , Nanjing University , Nanjing , Jiangsu 210046 , China
| | - Xiaolei Qu
- State Key Laboratory of Pollution Control and Resource Reuse/School of the Environment , Nanjing University , Nanjing , Jiangsu 210046 , China
| | - Heyun Fu
- State Key Laboratory of Pollution Control and Resource Reuse/School of the Environment , Nanjing University , Nanjing , Jiangsu 210046 , China
| | - Dongqiang Zhu
- School of Urban and Environmental Sciences , Peking University , Beijing 100871 , China
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261
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Govindaraj V, Shridharan RN, Rao AJ. Proteomic changes during adult stage in pre-optic, hypothalamus, hippocampus and pituitary regions of female rat brain following neonatal exposure to estradiol-17β. Gen Comp Endocrinol 2018; 266:126-134. [PMID: 29777688 DOI: 10.1016/j.ygcen.2018.05.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 04/14/2018] [Accepted: 05/06/2018] [Indexed: 02/07/2023]
Abstract
Although neonatal exposure to estrogen or estrogenic compounds results in irreversible changes in the brain function and reproductive abnormalities during adulthood but the underlying mechanisms are still largely unknown. The present study has attempted to compare the protein profiles of sexually dimorphic brain regions of adult female rats which were exposed to estradiol- 17β during neonatal period. The total proteins extracted from pre-optic area (POA), hypothalamus, hippocampus and pituitary of control and neonatally E2 treated female rats was subjected to 2D-SDS-PAGE and differentially expressed proteins were identified by MALDI TOF/TOF-MS. Our results revealed that a total of 21 protein spots which were identified as differentially expressed in all the four regions analyzed; the differential expression was further validated by RT-PCR and western blotting. The differentially expressed proteins such as 14-3-3 zeta/delta (POA), LMNA (hippocampus), Axin2 (hypothalamus), Syntaxin-7 (hippocampus), prolactin and somatotropin (pituitary) which have very important functions in the process of neuronal differentiation, migration, axon outgrowth, formation of dendritic spine density and synaptic plasticity and memory have not been previously reported in association with neonatal estrogen exposure. The affected brain functions are very important for the establishment of sex specific brain morphology and behavior. Our results suggest that the differentially expressed proteins may play an important role in irreversible changes in the brain function as well as reproductive abnormalities observed in the female rats during adulthood.
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Affiliation(s)
- Vijayakumar Govindaraj
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, India.
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262
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Liu YY, Lin YS, Yen CH, Miaw CL, Chen TC, Wu MC, Hsieh CY. Identification, contribution, and estrogenic activity of potential EDCs in a river receiving concentrated livestock effluent in Southern Taiwan. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 636:464-476. [PMID: 29709864 DOI: 10.1016/j.scitotenv.2018.04.031] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 04/02/2018] [Accepted: 04/03/2018] [Indexed: 06/08/2023]
Abstract
We assessed 22 selected endocrine-disrupting compounds (EDCs) and other emerging, potentially endocrine-active compounds with estrogenic activity from the waters of the Wuluo River, southern Taiwan. This watershed receives high amounts of livestock and untreated household wastewaters. The river is surrounded by concentrated animal feedlot operations (CAFOs). River water samples were analyzed for selected compounds by liquid chromatography-tandem mass spectrometry (LC-MS/MS), T47D-KBluc reporter gene assay, and E-screen cell proliferation in vitro bioassay. Total concentrations of ∑alkylphenolic compounds (bisphenol A, 4-nonylphenol, t-nonylphenol, octylphenol, nonylphenol mono-ethoxylate, nonylphenol di-ethoxylate) were much higher than ∑estrogens (estrone, 17 β-estradiol, estriol, 17ß-ethynylestradiol, diethylstilbestrol), ∑preservatives (methyl paraben, ethyl paraben, propyl paraben, butyl paraben), ∑UV-filters (benzophenone, methyl benzylidene camphor, benzophenone-3), ∑antimicrobials (triclocarben, triclosan, chloroxylenol), and an insect repellent (diethyltoluamide) over four seasonal sampling periods. The highest concentration was found for bisphenol A with a mean of 302 ng/L. However, its contribution to estrogenic activity was not significant due to its relatively low estrogenic potency. Lower detection rates were found for BP, EE2, TCS, and PCMX, while DES and EP were not detected. E1 and E2 levels in raw water samples were 50% higher than the predicted no-effect concentrations (PNEC) for aquatic organisms of 6 and 2 ng/L, respectively. The potency of estrogenic activity ranged from 11.7 to 190.1 ng/L E2T47D-Kbluc and 6.63 to 84.5 ng/L E2E-Screen for extracted samples. Importantly, estrone contributed 50% of the overall activity in 60% and 44% of the samples based on T47D-KBluc and MCF-7 bioassays, followed by 17 ß-estradiol, highlighting the importance of total steroid estrogen loading. This study demonstrates that the estrogenic activity of target chemicals was comparable to levels found in different countries worldwide. More intense wastewater treatment is required in areas of intensive agriculture in order to prevent adverse impacts on the ambient environment and aquatic ecosystems.
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Affiliation(s)
- Yung-Yu Liu
- Department of Environmental Science and Engineering, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan, ROC
| | - Yi-Siou Lin
- Department of Environmental Science and Engineering, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan, ROC
| | - Chia-Hung Yen
- Department of Biological Science and Technology, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan, ROC
| | - Chang-Ling Miaw
- Department of Nursing, Tajen University, Pingtung 90741, Taiwan, ROC
| | - Ting-Chien Chen
- Department of Environmental Science and Engineering, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan, ROC
| | - Meng-Chun Wu
- Department of Environmental Science and Engineering, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan, ROC
| | - Chi-Ying Hsieh
- Department of Environmental Science and Engineering, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan, ROC.
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263
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Somasundar Y, Shen LQ, Hoane AG, Tang LL, Mills MR, Burton AE, Ryabov AD, Collins TJ. Structural, Mechanistic, and Ultradilute Catalysis Portrayal of Substrate Inhibition in the TAML–Hydrogen Peroxide Catalytic Oxidation of the Persistent Drug and Micropollutant, Propranolol. J Am Chem Soc 2018; 140:12280-12289. [DOI: 10.1021/jacs.8b08108] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Yogesh Somasundar
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Longzhu Q. Shen
- Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, U.K
| | - Alexis G. Hoane
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Liang L. Tang
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Matthew R. Mills
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Abigail E. Burton
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Alexander D. Ryabov
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Terrence J. Collins
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
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264
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Geng Q, Li T, Li P, Wang X, Chu W, Ma Y, Ma H, Ni H. The accumulation, transformation, and effects of quinestrol in duckweed (Spirodela polyrhiza L.). THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 634:1034-1041. [PMID: 29660861 DOI: 10.1016/j.scitotenv.2018.04.030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 03/26/2018] [Accepted: 04/03/2018] [Indexed: 06/08/2023]
Abstract
Potential risk of endocrine disrupting compounds on non-target organisms has received extensive attentions in recent years. The present work aimed to investigate the behavior and effect of a synthetic steroid estrogen quinestrol in duckweed Spirodela polyrhiza L. Experimental results showed that quinestrol could be uptaken, accumulated, and biotransformed into 17 α-ethynylestradiol in S. polyrhiza L. The accumulation of quinestrol had a positive relation to the exposure concentration. The bioaccumulation rate was higher when the duckweed was exposed to quinestrol solutions at low concentrations than at high concentration. While the transformation of quinestrol showed no concentration-dependent manner. Quinestrol reduced the biomass and pigment content and increased superoxide dismutase and catalase activities and malondialdehyde contents in the duckweed. The results demonstrated that quinestrol could be accumulated and biotransformed in aquatic plant S. polyrhiza L. This work would provide supplemental data on the behavior of this steroid estrogen compound in aquatic system.
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Affiliation(s)
- Qianqian Geng
- College of Plant Protection, China Agricultural University, Beijing, PR China
| | - Tian Li
- College of Plant Protection, China Agricultural University, Beijing, PR China
| | - Pingliang Li
- College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao, PR China
| | - Xin Wang
- College of Plant Protection, China Agricultural University, Beijing, PR China
| | - Weijing Chu
- College of Plant Protection, China Agricultural University, Beijing, PR China
| | - Yanan Ma
- College of Plant Protection, China Agricultural University, Beijing, PR China
| | - Hui Ma
- College of Plant Protection, China Agricultural University, Beijing, PR China
| | - Hanwen Ni
- College of Plant Protection, China Agricultural University, Beijing, PR China.
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265
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Klopčič I, Markovič T, Mlinarič-Raščan I, Sollner Dolenc M. Endocrine disrupting activities and immunomodulatory effects in lymphoblastoid cell lines of diclofenac, 4-hydroxydiclofenac and paracetamol. Toxicol Lett 2018; 294:95-104. [DOI: 10.1016/j.toxlet.2018.05.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 05/11/2018] [Accepted: 05/15/2018] [Indexed: 12/27/2022]
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266
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Yao B, Li R, Yan S, Chan SA, Song W. Occurrence and estrogenic activity of steroid hormones in Chinese streams: A nationwide study based on a combination of chemical and biological tools. ENVIRONMENT INTERNATIONAL 2018; 118:1-8. [PMID: 29783136 DOI: 10.1016/j.envint.2018.05.026] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 05/03/2018] [Accepted: 05/13/2018] [Indexed: 05/22/2023]
Abstract
Steroid hormones (SHs) are continuously released into the aquatic environment through various pathways after being excreted by humans and animals, interfere with the normal function of the endocrine system and may affect the physiology and reproduction of exposed aquatic life. To conduct a nationwide investigation of the occurrence and biological effects of SHs in surface river/steam water in China, we quantitated 27 selected SHs in 217 surface water samples by solid-phase extraction (SPE) tandem LC-MS/MS and used a recombinant yeast estrogen assay to screen extracts of the water samples for estrogenic activities. SHs were commonly found in the surface water samples, and their levels were typically in the ng L-1 range. Estrone (E1) and estriol (E3) were normally present in several to dozens of times higher concentrations than estradiol (E2) and 17-a-Ethinylestradiol (EE2). The high concentrations (mean > 1 μg L-1) of SumSHs were primarily obtained in areas under extreme water stress, specifically the eastern coastal areas. Source apportionment based on the profiles of the target compounds indicated that 54.5% of the SHs in target samples came from freshly discharged untreated sewage. The estrogen equivalent (EEQ(bio)) values ranged from 0.01 to 40.27 ng L-1, and the calculated EEQ (EEQ(cal)) values were generally lower than the corresponding EEQ(bio) values for all samples. E2 was the main contributor to the estrogenicity among the three estrogens, with a contribution ratio of 82.8%. The risk quotient values of E2 were highest and ranged from 1.55 to 782.95, and 76.0% of the target surface samples displayed the greatest environmental risk. We concluded that the impacts of SHs on humans in Chinese surface waters should not be ignored and that certain actions should be taken to decrease the levels of SHs in source waters, especially measures targeting SHs in untreated wastewater from the vast rural areas.
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Affiliation(s)
- Bo Yao
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, PR China; Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, PR China
| | - Rui Li
- Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, PR China
| | - Shuwen Yan
- Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, PR China
| | - Shen-An Chan
- Agilent Technologies, Inc., 1350 North Sichuan Road, Shanghai 200080, PR China
| | - Weihua Song
- Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, PR China; Shanghai Institute of Pollution Control and Ecological Security, 1515 North Zhongshan Road, Shanghai 200080, PR China.
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267
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Blalock BJ, Robinson WE, Loguinov A, Vulpe CD, Krick KS, Poynton HC. Transcriptomic and Network Analyses Reveal Mechanistic-Based Biomarkers of Endocrine Disruption in the Marine Mussel, Mytilus edulis. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:9419-9430. [PMID: 29953215 DOI: 10.1021/acs.est.8b01604] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Transcriptomics, high-throughput assays, and adverse outcome pathways (AOP) are promising approaches applied to toxicity monitoring in the 21st century, but development of these methods is challenging for nonmodel organisms and emerging contaminants. For example, Endocrine Disrupting Compounds (EDCs) may cause reproductive impairments and feminization of male bivalves; however, the mechanism linked to this adverse outcome is unknown. To develop mechanism-based biomarkers that may be linked through an AOP, we exposed Mytilus edulis to 17-alpha-ethinylestradiol (5 and 50 ng/L) and 4-nonylphenol (1 and 100 μg/L) for 32 and 39 days. When mussels were exposed to these EDCs, we found elevated female specific transcripts and significant female-skewed sex ratios using a RT-qPCR assay. We performed gene expression analysis on digestive gland tissue using an M. edulis microarray and through network and targeted analyses identified the nongenomic estrogen signaling pathway and steroidogenesis pathway as the likely mechanisms of action for a putative AOP. We also identified several homologues to genes within the vertebrate steroidogenesis pathway including the cholesterol side chain cleavage complex. From this AOP, we designed the Coastal Biosensor for Endocrine Disruption (C-BED) assay which was confirmed in the laboratory and tested in the field.
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Affiliation(s)
- Bonnie J Blalock
- School for the Environment , University of Massachusetts Boston , Boston , Massachusetts 02125 United States
| | - William E Robinson
- School for the Environment , University of Massachusetts Boston , Boston , Massachusetts 02125 United States
| | - Alexandre Loguinov
- Center for Environmental and Human Toxicology , University of Florida , Gainesville , Florida 32611 United States
| | - Chris D Vulpe
- Center for Environmental and Human Toxicology , University of Florida , Gainesville , Florida 32611 United States
| | - Keegan S Krick
- School for the Environment , University of Massachusetts Boston , Boston , Massachusetts 02125 United States
| | - Helen C Poynton
- School for the Environment , University of Massachusetts Boston , Boston , Massachusetts 02125 United States
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268
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Bick JT, Flöter VL, Robinson MD, Bauersachs S, Ulbrich SE. Small RNA-seq analysis of single porcine blastocysts revealed that maternal estradiol-17beta exposure does not affect miRNA isoform (isomiR) expression. BMC Genomics 2018; 19:590. [PMID: 30081835 PMCID: PMC6090871 DOI: 10.1186/s12864-018-4954-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 07/23/2018] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND The expression of microRNAs (miRNAs) is essential for the proper development of the mammalian embryo. A maternal exposure to endocrine disrupting chemicals during preimplantation bears the potential for transgenerational inheritance of disease through the epigenetic perturbation of the developing embryo. A comprehensive assembly of embryo-specific miRNAs and respective isoforms (isomiR) is lacking to date. We aimed at revealing the sex-specific miRNA expression profile of single porcine blastocysts developing in gilts orally exposed to exogenous estradiol-17 (E2). Therefore we analyzed the miRNA profile specifically focusing on isomiRs and potentially embryo-specific miRNAs. RESULTS Deep sequencing of small RNA (small RNA-seq) result in the detection of miRNA sequences mapping to known and predicted porcine miRNAs as well as novel miRNAs highly conserved in human and cattle. A set of highly abundant miRNAs and a large number of rarely expressed miRNAs were identified by using a small RNA analysis pipeline, which was integrated into a novel Galaxy workflow specifically benefits incompletely annotated species. In particular, orthologue species information increased the total number of annotated miRNAs, while mapping to other non-coding RNAs avoided falsely annotated miRNAs. Neither the low nor the high dose of E2 treatment (10 and 1000 µ E2/kg body weight daily, respectively) affected the miRNA profile in blastocysts despite the distinct differential mRNA expression and DNA methylation found in previous studies. The high number of generated sequence reads enabled a comprehensive analysis of the isomiR repertoire showing various templated and non-templated modifications. Furthermore, potentially blastocyst-specific miRNAs were identified. CONCLUSIONS In pre-implantation embryos, numerous distinct isomiRs were discovered indicating a high complexity of miRNA expression. Neither the sex of the embryo nor a maternal E2 exposure affected the miRNA expression profile of developing porcine blastocysts. The adaptation to the continuous duration of the E2 treatment might explain the lack of an effect.
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Affiliation(s)
- Jochen T. Bick
- ETH Zurich, Animal Physiology, Institute of Agricultural Sciences, Zurich, Switzerland
| | - Veronika L. Flöter
- ETH Zurich, Animal Physiology, Institute of Agricultural Sciences, Zurich, Switzerland
- Physiology Weihenstephan, Technische Universität München, Freising, Germany
| | - Mark D. Robinson
- Institute of Molecular Life Sciences and SIB Swiss Institute of Bioinformatics, University of Zurich, Zurich, Switzerland
| | - Stefan Bauersachs
- ETH Zurich, Animal Physiology, Institute of Agricultural Sciences, Zurich, Switzerland
- University of Zurich, Genetics and Functional Genomics, Clinic for Animal Reproduction Medicine, Zurich, Switzerland
| | - Susanne E. Ulbrich
- ETH Zurich, Animal Physiology, Institute of Agricultural Sciences, Zurich, Switzerland
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269
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ARAUJO FREDERICOGDE, BAUERFELDT GLAUCOF, CID YARAPELUSO. Nonylphenol: Properties, legislation, toxicity and determination. ACTA ACUST UNITED AC 2018; 90:1903-1918. [DOI: 10.1590/0001-3765201720170023] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Accepted: 05/23/2017] [Indexed: 11/22/2022]
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270
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Ishibashi H, Uchida M, Yoshimoto K, Imamura Y, Yamamoto R, Ikenaka Y, Kawai M, Ichikawa N, Takao Y, Tominaga N, Ishibashi Y, Arizono K. Occurrence and seasonal variation of equine estrogens, equilin and equilenin, in the river water of Japan: Implication with endocrine-disrupting potentials to Japanese medaka (Oryzias latipes). ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 239:281-288. [PMID: 29660500 DOI: 10.1016/j.envpol.2018.04.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 04/04/2018] [Accepted: 04/06/2018] [Indexed: 06/08/2023]
Abstract
In this study, we determined the concentration of equine estrogens, such as equilin (Eq) and equilenin (Eqn), in the river water collected from nine research stations in Hokkaido, Japan. The LC-MS/MS analysis revealed that Eq concentrations were 2.7 ± 6.7, 0.22 ± 0.12, and 1.2 ± 0.64 ng/L in Sep 2015, Feb 2016, and Jul 2016, respectively. Eqn had concentration levels similar to those of Eq. Comparison of the concentrations at nine research stations showed that seasonal variation was observed in the detected Eq and Eqn concentration levels. This study was the first to show the occurrences and seasonal variation of Eq and Eqn in the river water of Japan. We further investigated the reproductive and transgenerational effects of Eq in Japanese medaka (Oryzias latipes) exposed to 10, 100, and 1000 ng/L for 21 days and assessed the transcriptional profiles of the estrogen-responsive genes in the livers of both sexes. The reproduction assay demonstrated that 1000 ng/L of Eq adversely affected the reproduction (i.e. fecundity) in the F0 generation and that the hatching of F1 generation fertilized eggs was reduced in the 100 and 1000 ng/L treatment groups. Our qRT-PCR assay revealed that the mRNA expression levels of hepatic vitellogenin 1 and 2, choriogenin L and H, and estrogen receptor α were significantly up-regulated in males exposed to 100 and/or 1000 ng/L of Eq. In contrast, the transcriptional levels of several genes, such as pregnane X receptor and cytochrome P450 3A, were down-regulated in the livers of males after the 21-d exposure. These results suggest that Eq has endocrine-disrupting potential such as reproductive and transgenerational effects by the modulation of hepatic estrogen-responsive genes expression on medaka.
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Affiliation(s)
- Hiroshi Ishibashi
- Graduate School of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, 790-8566, Japan
| | - Masaya Uchida
- Department of Creative Engineering, National Institute of Technology, Ariake College, 150 Higashi-Hagio, Omuta, Fukuoka, 836-8585, Japan
| | - Keisuke Yoshimoto
- Faculty of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto, 3-1-100 Tsukide, Higashi-ku, Kumamoto, 862-8502, Japan
| | - Yuta Imamura
- Faculty of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto, 3-1-100 Tsukide, Higashi-ku, Kumamoto, 862-8502, Japan
| | - Ryoko Yamamoto
- Faculty of Agriculture and Life Science, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
| | - Yoshinori Ikenaka
- Graduate School of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita ku, Sapporo, 060-0818, Japan
| | - Masahito Kawai
- Field Science Center for Northern Biosphere, Hokkaido University, Shizunaimisono 111, Shinhidaka-cho, Hokkaido, 056-0141, Japan
| | - Nobuhiro Ichikawa
- College of Pharmaceutical Sciences, Department of Pharmacy, Ritsumeikan University, 1-1-1 Noji-higashi, Kusatsu, Shiga, 525-8577, Japan
| | - Yuji Takao
- Faculty of Environmental Studies, Nagasaki University, 1-14 Bunkyo, Nagasaki, 852-8521, Japan
| | - Nobuaki Tominaga
- Department of Creative Engineering, National Institute of Technology, Ariake College, 150 Higashi-Hagio, Omuta, Fukuoka, 836-8585, Japan
| | - Yasuhiro Ishibashi
- Faculty of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto, 3-1-100 Tsukide, Higashi-ku, Kumamoto, 862-8502, Japan
| | - Koji Arizono
- Faculty of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto, 3-1-100 Tsukide, Higashi-ku, Kumamoto, 862-8502, Japan.
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271
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Gao X, Xiao ZH, Liu M, Zhang NY, Khalil MM, Gu CQ, Qi DS, Sun LH. Dietary Silymarin Supplementation Alleviates Zearalenone-Induced Hepatotoxicity and Reproductive Toxicity in Rats. J Nutr 2018; 148:1209-1216. [PMID: 30137478 DOI: 10.1093/jn/nxy114] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 05/01/2018] [Indexed: 12/22/2022] Open
Abstract
Background Zearalenone (ZEN) can cause serious defects in development and reproduction in humans and animals. Silymarin shows antioxidant and estrogenic effects. Objective This study was conducted to determine if silymarin can antagonize ZEN-induced hepatic and reproductive toxicities. Methods Thirty-five 21-d-old female Sprague-Dawley rats (n = 7/diet) were fed a control diet (Ctrl) or Ctrl plus 20 mg ZEN/kg or Ctrl plus 20 mg ZEN/kg with 100, 200, or 500 mg silymarin/kg for 6 wk. Serum, livers, ovaries, and uterus were collected at week 6 for biochemistry, hormone, and redox status and selected gene and protein assays. Results The consumption of ZEN decreased (P < 0.05) the final body weight by 17.9%, induced liver injury, increased (P < 0.05) aspartate aminotransferase and alkaline phosphatase activities, and decreased (P < 0.05) total protein and albumin concentrations in serum by 16.7-40.6%. ZEN also caused reproductive toxicity, including decreased (P < 0.05) 17β-estradiol and increased (P < 0.05) follicle-stimulating hormone concentrations in serum by 12.7-46.3% and induced histopathologic alterations in the liver, ovaries, and uterus. Interestingly, these alterations induced by ZEN were alleviated (P < 0.05) by silymarin supplementation at 100, 200, and 500 mg/kg. Moreover, silymarin supplementation at the 3 doses mitigated (P < 0.05) ZEN-induced impairment in hepatic glutathione peroxidase activity, total antioxidant capacity, and malondialdehyde concentration by 17.6-100%. Meanwhile, silymarin supplementation at all doses upregulated (P < 0.05) phospho-ribosomal protein S6 kinase 1 (p-RPS6KB1) and 3β-hydroxysteroid dehydrogenase (HSD3B) by 43.0-121% but downregulated (P < 0.05) AMP-activated protein kinase (AMPK) and 3α-hydroxysteroid dehydrogenase (HSD3A) in the liver relative to the ZEN group by 11.2-40.6%. In addition, silymarin supplementation at all doses elevated (P < 0.05) HSD3B by 1.8- to 2.5-fold and decreased (P < 0.05) estrogen receptor 1 (ESR1), ATP binding cassette (ABC) c1, and Abcc5 in ovaries and the uterus by 10.7-63.2%. Conclusion Dietary silymarin supplementation at 100, 200, and 500 mg/kg protected rats from ZEN-induced hepatotoxicity and reproductive toxicity, potentially through improvement in the antioxidant capacity and regulation in the genes related to protein synthesis, ZEN metabolism, hormone synthesis, and ABC transporters in the tissues.
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Affiliation(s)
- Xin Gao
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
- Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei, China
| | - Zhuo-Hui Xiao
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
- Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei, China
| | - Meng Liu
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
- Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei, China
| | - Ni-Ya Zhang
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
- Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei, China
| | - Mahmoud Mohamed Khalil
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
- Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei, China
| | - Chang-Qin Gu
- Department of Veterinary Pathology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei, China
| | - De-Sheng Qi
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
- Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei, China
| | - Lv-Hui Sun
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
- Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei, China
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272
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Hale MD, McCoy JA, Doheny BM, Galligan TM, Guillette LJ, Parrott BB. Embryonic estrogen exposure recapitulates persistent ovarian transcriptional programs in a model of environmental endocrine disruption†. Biol Reprod 2018; 100:149-161. [DOI: 10.1093/biolre/ioy165] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 07/12/2018] [Indexed: 11/15/2022] Open
Affiliation(s)
- Matthew D Hale
- Savannah River Ecology Laboratory, Aiken, South Carolina, USA
- Odum School of Ecology, University of Georgia, Athens, Georgia, USA
| | | | - Brenna M Doheny
- School of Public Health, University of Minnesota, Minneapolis, Minnesota, USA
| | - Thomas M Galligan
- Department of Fish and Wildlife Conservation, Virginia Tech, Blacksburg, Virginia, USA
| | - Louis J Guillette
- Marine Biomedicine and Environmental Sciences Program, Hollings Marine Laboratory, Medical University of South Carolina, Charleston, South Carolina, USA
- Department of Obstetrics and Gynecology, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Benjamin B Parrott
- Savannah River Ecology Laboratory, Aiken, South Carolina, USA
- Odum School of Ecology, University of Georgia, Athens, Georgia, USA
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273
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Şolpan D, Mehrnia M. Dimethyl phthalate (DMP) degradation in aqueous solution by gamma-irradiation/H2O2. J Radioanal Nucl Chem 2018. [DOI: 10.1007/s10967-018-5944-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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274
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Mesnage R, Biserni M, Genkova D, Wesolowski L, Antoniou MN. Evaluation of neonicotinoid insecticides for oestrogenic, thyroidogenic and adipogenic activity reveals imidacloprid causes lipid accumulation. J Appl Toxicol 2018; 38:1483-1491. [PMID: 29952068 PMCID: PMC6221087 DOI: 10.1002/jat.3651] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 04/13/2018] [Accepted: 05/04/2018] [Indexed: 12/20/2022]
Abstract
Few studies have investigated non-target effects of neonicotinoid insecticides on mammalian physiology. This is largely due to the widespread perception that their weak affinity for nicotinic acetylcholine receptor subtypes in vertebrates makes mammalian exposures unlikely to pose health risks. To the best of our knowledge, we describe the first investigation evaluating the interaction of seven principal neonicotinoid insecticides (thiamethoxam, imidacloprid, clothianidin, flupyradifurone, dinotefuran, nitenpyram, thiacloprid) with oestrogen and thyroid hormone receptors, as well as their adipogenic effects, in mammalian cell culture assay systems. An E-Screen with MCF-7 and T-Screen with GH3 cells respectively showed a lack of oestrogen and thyroid hormone receptor agonist effects for any of the neonicotinoids tested. Adipogenicity was assessed by the ability to stimulate lipid accumulation in adipocyte differentiated 3T3-L1 cells, with only imidacloprid scoring positive in this assay causing triglyceride accumulation from a concentration of 50 mg l-1 . Data mining of ToxCast high-throughput screening assays revealed that this adipogenic effect of imidacloprid is probably mediated via the pregnane X receptor.
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Affiliation(s)
- Robin Mesnage
- Gene Expression and Therapy Group, King's College London, Faculty of Life Sciences & Medicine, Department of Medical and Molecular Genetics, Guy's Hospital, London, SE1 9RT, UK
| | - Martina Biserni
- Gene Expression and Therapy Group, King's College London, Faculty of Life Sciences & Medicine, Department of Medical and Molecular Genetics, Guy's Hospital, London, SE1 9RT, UK
| | - Dilyana Genkova
- Gene Expression and Therapy Group, King's College London, Faculty of Life Sciences & Medicine, Department of Medical and Molecular Genetics, Guy's Hospital, London, SE1 9RT, UK
| | - Ludovic Wesolowski
- Gene Expression and Therapy Group, King's College London, Faculty of Life Sciences & Medicine, Department of Medical and Molecular Genetics, Guy's Hospital, London, SE1 9RT, UK
| | - Michael N Antoniou
- Gene Expression and Therapy Group, King's College London, Faculty of Life Sciences & Medicine, Department of Medical and Molecular Genetics, Guy's Hospital, London, SE1 9RT, UK
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275
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Šauer P, Stará A, Golovko O, Valentová O, Bořík A, Grabic R, Kroupová HK. Two synthetic progestins and natural progesterone are responsible for most of the progestagenic activities in municipal wastewater treatment plant effluents in the Czech and Slovak republics. WATER RESEARCH 2018; 137:64-71. [PMID: 29544204 DOI: 10.1016/j.watres.2018.02.065] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 01/18/2018] [Accepted: 02/28/2018] [Indexed: 06/08/2023]
Abstract
Vast numbers of xenobiotics are known still to be present in treated municipal wastewater treatment plant (WWTP) effluents. Some of these possess endocrine-disrupting potency and pose risks for exposed aquatic animals. We searched for 17 potential environmental contaminants having affinity to the progesterone receptor. Relative potency values of these progesterone receptor-active chemicals were obtained. On the basis of relative potencies and measured environmental concentrations, the contribution of progestins to measured progestagenic activities was evaluated. Wastewaters (influent and effluent) and surrounding surface waters (upstream and downstream) at six municipal WWTPs were screened using instrumental chemical analysis and in vitro reporter gene bioassay. We showed the presence of target compounds and (anti-)progestagenic activities in municipal wastewater and surface water. Nine and seven progestins were identified in influent and effluent wastewaters, respectively. Only two compounds, progesterone and medroxyprogesterone were found in surface waters. Progestagenic agonistic activities in influents were partially masked by strong anti-progestagenic activities that were detected in all influents and ranged from 2.63 to 83 ng/L of mifepristone equivalents (EQs). Progestagenic activities were detected in all effluents and ranged from 0.06 to 0.47 ng/L of reference compound ORG 2058 EQs (a synthetic progestin equivalents), thus indicating incomplete removal of progestins during wastewater treatment processing. This activity poses a continuing risk for the aquatic environment. By contrast, anti-progestagenic activities showed better removal efficiency in WWTPs compared to progestagenic agonistic activities. Anti-progestagenic activities were found in only three of six effluents and ranged from 0.26 to 2.1 ng/L mifepristone EQs. We explained most of the progestagenic activity in municipal WWTP effluents by the presence of synthetic progestins and progesterone, which contributed 65-96% of such activity in samples where no antagonistic activity was found. The progestins medroxyprogesterone acetate, megestrol acetate and progesterone contributed most to the progestagenic activity detected in municipal effluents. Anti-progestagenic activities were found in some municipal effluents, but no causative agents were revealed because two analysed selective progesterone receptor modulators (SPRMs) with anti-progestagenic activities, mifepristone and ulipristal acetate, were not present in the effluents.
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Affiliation(s)
- Pavel Šauer
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zátiší 728/II, 389 25 Vodňany, Czech Republic.
| | - Alžběta Stará
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zátiší 728/II, 389 25 Vodňany, Czech Republic
| | - Oksana Golovko
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zátiší 728/II, 389 25 Vodňany, Czech Republic
| | - Olga Valentová
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zátiší 728/II, 389 25 Vodňany, Czech Republic
| | - Adam Bořík
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zátiší 728/II, 389 25 Vodňany, Czech Republic
| | - Roman Grabic
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zátiší 728/II, 389 25 Vodňany, Czech Republic
| | - Hana Kocour Kroupová
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zátiší 728/II, 389 25 Vodňany, Czech Republic
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276
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de Araújo JFP, Podratz PL, Sena GC, Merlo E, Freitas-Lima LC, Ayub JGM, Pereira AFZ, Santos-Silva AP, Miranda-Alves L, Silva IV, Graceli JB. The obesogen tributyltin induces abnormal ovarian adipogenesis in adult female rats. Toxicol Lett 2018; 295:99-114. [PMID: 29908848 DOI: 10.1016/j.toxlet.2018.06.1068] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 06/07/2018] [Accepted: 06/12/2018] [Indexed: 12/20/2022]
Abstract
Tributyltin chloride (TBT) is an obesogen associated with various metabolic and reproductive dysfunctions after in utero exposure. However, few studies have evaluated TBT's obesogenic effect on adult ovaries. In this study, we assessed whether TBT's obesogenic effects resulted in adult ovarian adipogenesis and other reproductive abnormalities. TBT was administered to adult female Wistar rats, and their reproductive tract morphophysiology was assessed. We further assessed the ovarian mRNA/protein expression of genes that regulate adipogenesis. Rats exposed to TBT displayed abnormal estrous cyclicity, ovarian sex hormone levels, ovarian follicular development and ovarian steroidogenic enzyme regulation. Rats exposed to TBT also demonstrated abnormal ovarian adipogenesis with increased cholesterol levels, lipid accumulation, and PPARγ, C/EBP-β and Lipin-1 expression. A negative correlation between the ovarian PPARγ expression and aromatase expression was observed in the TBT rats. Furthermore, TBT exposure resulted in reproductive tract atrophy, inflammation, oxidative stress and fibrosis. Ovarian dysfunctions also co-occurred with the uterine irregularities. Abnormal ovarian adipogenic markers occurring after TBT exposure may be associated with uterine irregularities. A positive correlation between the ovarian cholesterol levels and uterine inflammation was observed in the TBT rats. These findings suggest that TBT leads to ovarian obesogenic effects directly by abnormal adipogenesis and/or indirectly through adult reproductive tract irregularities.
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Affiliation(s)
| | | | - Gabriela C Sena
- Dept of Morphology, Federal University of Espírito Santo, Brazil
| | - Eduardo Merlo
- Dept of Morphology, Federal University of Espírito Santo, Brazil
| | | | | | | | - Ana Paula Santos-Silva
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Brazil; Experimental Endocrinology Research, Development and Innovation Group, Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Brazil
| | - Leandro Miranda-Alves
- Experimental Endocrinology Research, Development and Innovation Group, Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Brazil; Postgraduate Program in Endocrinology, School of Medicine, Federal University of Rio de Janeiro, Brazil
| | - Ian V Silva
- Dept of Morphology, Federal University of Espírito Santo, Brazil
| | - Jones B Graceli
- Dept of Morphology, Federal University of Espírito Santo, Brazil.
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277
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Street ME, Angelini S, Bernasconi S, Burgio E, Cassio A, Catellani C, Cirillo F, Deodati A, Fabbrizi E, Fanos V, Gargano G, Grossi E, Iughetti L, Lazzeroni P, Mantovani A, Migliore L, Palanza P, Panzica G, Papini AM, Parmigiani S, Predieri B, Sartori C, Tridenti G, Amarri S. Current Knowledge on Endocrine Disrupting Chemicals (EDCs) from Animal Biology to Humans, from Pregnancy to Adulthood: Highlights from a National Italian Meeting. Int J Mol Sci 2018; 19:E1647. [PMID: 29865233 PMCID: PMC6032228 DOI: 10.3390/ijms19061647] [Citation(s) in RCA: 138] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 05/23/2018] [Accepted: 05/31/2018] [Indexed: 02/07/2023] Open
Abstract
Wildlife has often presented and suggested the effects of endocrine disrupting chemicals (EDCs). Animal studies have given us an important opportunity to understand the mechanisms of action of many chemicals on the endocrine system and on neurodevelopment and behaviour, and to evaluate the effects of doses, time and duration of exposure. Although results are sometimes conflicting because of confounding factors, epidemiological studies in humans suggest effects of EDCs on prenatal growth, thyroid function, glucose metabolism and obesity, puberty, fertility, and on carcinogenesis mainly through epigenetic mechanisms. This manuscript reviews the reports of a multidisciplinary national meeting on this topic.
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Affiliation(s)
- Maria Elisabeth Street
- Department of Obstetrics, Gynaecology and Paediatrics, Azienda USL-IRCCS, Viale Risorgimento 80, 42123 Reggio Emilia, Italy.
| | - Sabrina Angelini
- Department of Pharmacy and Biotechnology, University of Bologna, Via Irnerio 48, 40126 Bologna, Italy.
| | - Sergio Bernasconi
- Former Department of Medicine, University of Parma, Via A. Catalani 10, 43123 Parma, Italy.
| | - Ernesto Burgio
- ECERI European Cancer and Environment Research Institute, Square de Meeus, 38-40, 1000 Bruxelles, Belgium.
| | - Alessandra Cassio
- Pediatric Endocrinology Programme, Pediatrics Unit, Department of Woman, Child Health and Urologic Diseases, AOU S. Orsola-Malpighi, Via Massarenti, 11, 40138 Bologna, Italy.
| | - Cecilia Catellani
- Department of Obstetrics, Gynaecology and Paediatrics, Azienda USL-IRCCS, Viale Risorgimento 80, 42123 Reggio Emilia, Italy.
| | - Francesca Cirillo
- Department of Obstetrics, Gynaecology and Paediatrics, Azienda USL-IRCCS, Viale Risorgimento 80, 42123 Reggio Emilia, Italy.
| | - Annalisa Deodati
- Department of Pediatrics (DPUO), Bambino Gesù Children's Hospital, Tor Vergata University, Piazza S. Onofrio 4, 00165 Rome, Italy.
| | - Enrica Fabbrizi
- Department of Pediatrics and Neonatology, Augusto Murri Hospital, Via Augusto Murri, 17, 63900 Fermo, Itlay.
| | - Vassilios Fanos
- Neonatal Intensive Care Unit, Neonatal Pathology and Neonatal Section, AOU and University of Cagliari, via Ospedale, 54, 09124 Cagliari, Italy.
| | - Giancarlo Gargano
- Department of Obstetrics, Gynaecology and Paediatrics, Azienda USL-IRCCS, Viale Risorgimento 80, 42123 Reggio Emilia, Italy.
| | - Enzo Grossi
- Villa Santa Maria Institute, Neuropsychiatric Rehabilitation Center, Via IV Novembre 15, 22038 Tavernerio (Como), Italy.
| | - Lorenzo Iughetti
- Department of Medical and Surgical Sciences of the Mother, Children and Adults, Pediatrics Unit, University of Modena and Reggio Emilia, via del Pozzo, 71, 41124 Modena, Italy.
| | - Pietro Lazzeroni
- Department of Obstetrics, Gynaecology and Paediatrics, Azienda USL-IRCCS, Viale Risorgimento 80, 42123 Reggio Emilia, Italy.
| | - Alberto Mantovani
- Department of Veterinary Public Health and Food Safety, Food and Veterinary Toxicology Unit ISS⁻National Institute of Health, Viale Regina Elena 299, 00161 Rome, Italy.
| | - Lucia Migliore
- Department of Traslational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma, 55, 56123 Pisa, Italy.
| | - Paola Palanza
- Unit of Neuroscience, Department of Medicine and Surgery, University of Parma, Via Gramsci, 14, 43126 Parma, Italy.
| | - Giancarlo Panzica
- Laboratory of Neuroendocrinology, Department of Neuroscience Rita Levi Montalcini, University of Turin, Via Cherasco 15, 10126 Turin, Italy.
- Neuroscience Institute Cavalieri-Ottolenghi (NICO), Regione Gonzole, 10, 10043 Orbassano (Turin), Italy.
| | - Anna Maria Papini
- Department of Chemistry 'Ugo Schiff', University of Florence, Via della Lastruccia, 3-13, 50019 Sesto Fiorentino, Florence, Italy.
| | - Stefano Parmigiani
- Unit of Evolutionary and Functional Biology-Department of Chemistry, Life Sciences and Environmental Sustainability (SCVSA)-University of Parma⁻11/a, 43124 Parma, Italy.
| | - Barbara Predieri
- Department of Medical and Surgical Sciences of the Mother, Children and Adults, Pediatrics Unit, University of Modena and Reggio Emilia, via del Pozzo, 71, 41124 Modena, Italy.
| | - Chiara Sartori
- Department of Obstetrics, Gynaecology and Paediatrics, Azienda USL-IRCCS, Viale Risorgimento 80, 42123 Reggio Emilia, Italy.
| | - Gabriele Tridenti
- Department of Obstetrics, Gynaecology and Paediatrics, Azienda USL-IRCCS, Viale Risorgimento 80, 42123 Reggio Emilia, Italy.
| | - Sergio Amarri
- Department of Obstetrics, Gynaecology and Paediatrics, Azienda USL-IRCCS, Viale Risorgimento 80, 42123 Reggio Emilia, Italy.
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278
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Prenatal exposure to zearalenone disrupts reproductive potential and development via hormone-related genes in male rats. Food Chem Toxicol 2018; 116:11-19. [DOI: 10.1016/j.fct.2018.04.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 03/25/2018] [Accepted: 04/04/2018] [Indexed: 10/17/2022]
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279
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Xie H, Chen Q, Chen J, Chen CEL, Du J. Investigation and application of diffusive gradients in thin-films technique for measuring endocrine disrupting chemicals in seawaters. CHEMOSPHERE 2018; 200:351-357. [PMID: 29494916 DOI: 10.1016/j.chemosphere.2018.02.096] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 02/12/2018] [Accepted: 02/16/2018] [Indexed: 06/08/2023]
Abstract
Endocrine disrupting chemicals (EDCs) can be released to coastal waters and affect the endocrine system of marine organisms. To monitor their levels in seawaters, a simple, robust passive sampling method, the diffusive gradients in thin-films (DGT) technique, was developed with XDA-1 resin as a binding agent. Six EDCs (including three estrogens, two pesticides and bisphenol A) were used to assess the performance of the DGT. The XDA-1 binding gel showed adequate ability for adsorbing EDCs in seawaters. The DGT sampler exhibited linear accumulation for the EDCs during a 15-day deployment and diffusion coefficients and sampling rates were calculated. The DGT measurement was independent of pH in the range 7.0-9.0 and ionic strength in the range 0.4-0.8 M. Field applications of this DGT in a coast of Dalian (China) showed comparable results to those from grab sampling. Five EDCs were detected with concentrations ranging from 0.7 to 19.4 ng L-1. This study is a first attempt to apply DGT sampler for determining EDCs in seawaters.
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Affiliation(s)
- Huaijun Xie
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Qining Chen
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Jingwen Chen
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
| | - Chang-Er L Chen
- The Environmental Research Institute, MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou 510006, China; Department of Environmental Science and Analytical Chemistry (ACES), Stockholm University SE-106 91 Stockholm, Sweden
| | - Juan Du
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
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280
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Rehberger K, Baumann L, Hecker M, Braunbeck T. Intrafollicular thyroid hormone staining in whole-mount zebrafish (Danio rerio) embryos for the detection of thyroid hormone synthesis disruption. FISH PHYSIOLOGY AND BIOCHEMISTRY 2018; 44:997-1010. [PMID: 29568982 DOI: 10.1007/s10695-018-0488-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Accepted: 02/26/2018] [Indexed: 06/08/2023]
Abstract
Endocrine-disrupting chemicals are known to impact multiple hormonal axes of vertebrates, among which the thyroid system is crucial for multiple developmental and physiological processes. Thus, the present study focused on the semi-quantitative visualization of intrafollicular triiodothyronine (T3) and thyroxin (T4) in zebrafish embryos as a potential test system for the detection of disrupted thyroid hormone synthesis. To this end, an antibody-based fluorescence double-staining protocol for whole-mount zebrafish embryos and larvae was adapted to simultaneously detect intrafollicular T3 and T4. During normal development until 10 days post-fertilization (dpf), the number of thyroid follicles increased along the ventral aorta. Concentrations of T4 and T3, measured by fluorescence intensity, increased until 6 dpf, but decreased thereafter. Exposure of zebrafish embryos to propylthiouracil (PTU), a known inhibitor of TH synthesis, resulted in a significant decrease in the number of follicles that stained for T3, whereas a trend for increase in follicles that stained for T4 was observed. In contrast, fluorescence intensity for both thyroid hormones decreased significantly after exposure to PTU. Overall, the zebrafish embryo appears to be suitable for the simultaneous visualization and detection of changing intrafollicular TH contents during normal development and after PTU treatment.
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Affiliation(s)
- Kristina Rehberger
- Centre for Organismal Studies, Aquatic Ecology and Toxicology, University of Heidelberg, Im Neuenheimer Feld 504, 69120, Heidelberg, Germany
- Vetsuisse Faculty, Centre for Fish and Wildlife Health, University of Bern, Länggassstrasse122, 3012, Bern, Switzerland
| | - Lisa Baumann
- Centre for Organismal Studies, Aquatic Ecology and Toxicology, University of Heidelberg, Im Neuenheimer Feld 504, 69120, Heidelberg, Germany.
| | - Markus Hecker
- School of the Environment & Sustainability and Toxicology Centre, University of Saskatchewan, 44 Campus Drive, Saskatoon, SK, S7N 5B3, Canada
| | - Thomas Braunbeck
- Centre for Organismal Studies, Aquatic Ecology and Toxicology, University of Heidelberg, Im Neuenheimer Feld 504, 69120, Heidelberg, Germany.
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281
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Gaudet HM, Christensen E, Conn B, Morrow S, Cressey L, Benoit J. Methylmercury promotes breast cancer cell proliferation. Toxicol Rep 2018; 5:579-584. [PMID: 29868453 PMCID: PMC5984200 DOI: 10.1016/j.toxrep.2018.05.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 05/02/2018] [Accepted: 05/13/2018] [Indexed: 10/26/2022] Open
Abstract
CONTEXT Metalloestrogens are small ionic metals that activate the estrogen receptor (ER). Studies have shown that when metalloestrogens bind to the ER, there is an increase in transcription and expression of estrogen-regulated genes, which induces proliferation of estrogen-dependent breast cancer. Methylmercury (MeHg), a metalloestrogen, is present in the environment and is toxic at moderate to high concentrations. However, at lower concentrations MeHg may promote the proliferation of ER-positive breast cancers and protect cells against pro-apoptotic signals. OBJECTIVE To investigate the effects of MeHg treatment on breast cancer cells in vitro. MATERIALS AND METHODS MCF7 breast cancer cells were treated with concentrations of MeHg ranging from 1 nM to 100 mM. Hg analysis was used to quantify intracellular mercury concentrations. Cell proliferation and apoptosis were determined by cell counting and Annexin-V staining, respectively. RESULTS We defined a protocol that maximizes cellular exposure to mercury. Treatment of human ER-positive breast cancer cells with 1 nM MeHg promoted proliferation, while treatment with a concentration of 100 nM induced apoptosis. DISCUSSION AND CONCLUSIONS Clarifying the effects of MeHg on breast cancer will improve our understanding of how environmental toxins affect tumor progression and may lead to the development of future therapeutic strategies.
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282
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Furst AL, Smith MJ, Francis MB. New Techniques for the Generation and Analysis of Tailored Microbial Systems on Surfaces. Biochemistry 2018; 57:3017-3026. [DOI: 10.1021/acs.biochem.8b00324] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ariel L. Furst
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720-1460, United States
| | - Matthew J. Smith
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720-1460, United States
| | - Matthew B. Francis
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720-1460, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720-1460, United States
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283
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Zhang R, Wang X, Zhou L, Liu Z, Crump D. The impact of dissolved oxygen on sulfate radical-induced oxidation of organic micro-pollutants: A theoretical study. WATER RESEARCH 2018; 135:144-154. [PMID: 29466718 DOI: 10.1016/j.watres.2018.02.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 02/09/2018] [Accepted: 02/12/2018] [Indexed: 06/08/2023]
Abstract
Sulfate radical (SO4.-)-induced oxidation is an important technology in advanced oxidation processes (AOPs) for the removal of pollutants. To date, few studies have assessed the effects of dissolved oxygen (DO) on the SO4.--induced oxidation of organic micro-pollutants. In the present work, a quantum chemical calculation was used to investigate the influence of the external oxygen molecule on the Gibbs free energy (Gpollutant) and HOMO-LUMO gap (ΔE) of 15 organic micro-pollutants representing four chemical categories. Several thermodynamic and statistical models were combined with the data from the quantum chemical calculation to illustrate the impact of DO on the oxidation of organic micro-pollutants by SO4.-. Results indicated that the external oxygen molecule increased Gpollutant of all studied chemicals, which implies DO has the potential to decrease the energy barrier of the SO4.--induced oxidation and shift the chemical equilibrium of the reaction towards the side of products. From the perspective of kinetics, DO can accelerate the oxidation by decreasing ΔE of organic micro-pollutants. In addition, changes of Gpollutant and ΔE of the SO4.--induced oxidation were both significantly different between open-chain and aromatic chemicals, and these differences were partially attributed to the difference of polarizability of these two types of chemicals. Furthermore, we revealed that all changes of Gpollutant and ΔE induced by DO were dependent on the DO content. Our study emphasizes the significance of DO on the oxidation of organic micro-pollutants by SO4.-, and also provides a theoretical method to study the effect of components in wastewater on removal of organic pollutants in AOPs.
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Affiliation(s)
- Rui Zhang
- School of Resources and Environment, University of Jinan, 250022, Jinan, PR China.
| | - Xiaoxiang Wang
- Association of Chinese Chemists and Chemical Engineers in Germany, 67117, Limburgerh of, Germany; State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, 210023, Nanjing, PR China
| | - Lei Zhou
- State Environmental Protection Key Lab of Environmental Risk Assessment and Control on Chemical Processes, School of Resources & Environmental Engineering, East China University of Science and Technology, Shanghai, 200237, PR China; Univ Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, F-69c626, 2 Avenue Albert Einstein, Villeurbanne, France.
| | - Zhu Liu
- Association of Chinese Chemists and Chemical Engineers in Germany, 67117, Limburgerh of, Germany; Theoretical Chemistry and Catalysis Research Center, Technische Universität München, 85747, Garching, Germany
| | - Doug Crump
- Environment and Climate Change Canada, National Wildlife Research Centre, 1125, Colonel By Drive, K1A 0H3, Ottawa, Canada
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284
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Nevoral J, Kolinko Y, Moravec J, Žalmanová T, Hošková K, Prokešová Š, Klein P, Ghaibour K, Hošek P, Štiavnická M, Řimnáčová H, Tonar Z, Petr J, Králíčková M. Long-term exposure to very low doses of bisphenol S affects female reproduction. Reproduction 2018; 156:47-57. [PMID: 29748175 DOI: 10.1530/rep-18-0092] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 05/10/2018] [Indexed: 12/15/2022]
Abstract
Bisphenols belong to the endocrine disruptors, affecting reproduction even in extremely low doses. Bisphenol S (BPS) has become widely used as a substitute for the earlier-used bisphenol A; however, its harmlessness is questionable. The aim of this study was to evaluate the effect of BPS on folliculogenesis and oocyte quality after in vivo exposure to low doses of BPS. Four-week-old ICR females (n = 16 in each experimental group) were exposed to vehicle control (VC), BPS1 (0.001 ng BPS.g/bw/day), BPS2 (0.1 ng.g/bw/day), BPS3 (10 ng.g/bw/day) and BPS4 (100 ng.g/bw/day) for 4 weeks. Ovaries were subjected to stereology and nano liquid chromatography-mass spectrometry (LC/MS). Simultaneously, metaphase II oocytes were obtained after pregnant mare serum gonadotrophin and human chorionic gonadotrophin administration, followed by immunostaining. In particular, mating and two-cell embryo flushing were performed. We observed that BPS decreases the amount of ovarian follicles and BPS2 (0.1 ng.g/bw/day) affects the volume of antral follicles. Accordingly, ovarian proteome is affected after BPS2 treatment. While BPS2 dosing results mainly in cytoskeletal damage in matured oocytes, the effects of BPS3 and BPS4 seem to be due instead to epigenetic alterations in oocytes. Arguably, these changes lead to observed affection of in vivo fertilization rate after BPS3 and BPS4 treatment. BPS significantly affects female reproduction astoundingly in extremely low doses. These findings underline the necessity to assess the risk of ongoing BPS exposure for public health.
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Affiliation(s)
- Jan Nevoral
- Biomedical CenterFaculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic .,Department of Histology and EmbryologyFaculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | - Yaroslav Kolinko
- Biomedical CenterFaculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic.,Department of Histology and EmbryologyFaculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | - Jiří Moravec
- Biomedical CenterFaculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | | | | | - Šárka Prokešová
- Biomedical CenterFaculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic.,Faculty of AgrobiologyFood and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic
| | - Pavel Klein
- Biomedical CenterFaculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | - Kamar Ghaibour
- Biomedical CenterFaculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic.,Université Lille1Sciences et Technologies, FR3688 CNRS, Villeneuve d'Ascq Cedex, France
| | - Petr Hošek
- Biomedical CenterFaculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | - Miriama Štiavnická
- Biomedical CenterFaculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | - Hedvika Řimnáčová
- Biomedical CenterFaculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | - Zbyněk Tonar
- Biomedical CenterFaculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic.,Department of Histology and EmbryologyFaculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | | | - Milena Králíčková
- Biomedical CenterFaculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic.,Department of Histology and EmbryologyFaculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
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285
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Matsushima A. A Novel Action of Endocrine-Disrupting Chemicals on Wildlife; DDT and Its Derivatives Have Remained in the Environment. Int J Mol Sci 2018; 19:E1377. [PMID: 29734751 PMCID: PMC5983739 DOI: 10.3390/ijms19051377] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 04/30/2018] [Accepted: 05/02/2018] [Indexed: 02/08/2023] Open
Abstract
Huge numbers of chemicals are released uncontrolled into the environment and some of these chemicals induce unwanted biological effects, both on wildlife and humans. One class of these chemicals are endocrine-disrupting chemicals (EDCs), which are released even though EDCs can affect not only the functions of steroid hormones but also of various signaling molecules, including any ligand-mediated signal transduction pathways. Dichlorodiphenyltrichloroethane (DDT), a pesticide that is already banned, is one of the best-publicized EDCs and its metabolites have been considered to cause adverse effects on wildlife, even though the exact molecular mechanisms of the abnormalities it causes still remain obscure. Recently, an industrial raw material, bisphenol A (BPA), has attracted worldwide attention as an EDC because it induces developmental abnormalities even at low-dose exposures. DDT and BPA derivatives have structural similarities in their chemical features. In this short review, unclear points on the molecular mechanisms of adverse effects of DDT found on alligators are summarized from data in the literature, and recent experimental and molecular research on BPA derivatives is investigated to introduce novel perspectives on BPA derivatives. Especially, a recently developed BPA derivative, bisphenol C (BPC), is structurally similar to a DDT derivative called dichlorodiphenyldichloroethylene (DDE).
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Affiliation(s)
- Ayami Matsushima
- Laboratory of Structure-Function Biochemistry, Department of Chemistry, Faculty of Science, Kyushu University, Fukuoka 819-0395, Japan.
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286
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Gholivand MB, Akbari A. A novel and high sensitive MWCNTs-nickel carbide/hollow fiber-pencil graphite modified electrode for in situ ultra-trace analysis of bisphenol A. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.03.065] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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287
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Jambor T, Greifova H, Kovacik A, Kovacikova E, Tvrda E, Forgacs Z, Massanyi P, Lukac N. Parallel effect of 4-octylphenol and cyclic adenosine monophosphate (cAMP) alters steroidogenesis, cell viability and ROS production in mice Leydig cells. CHEMOSPHERE 2018; 199:747-754. [PMID: 29478761 DOI: 10.1016/j.chemosphere.2018.02.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 01/30/2018] [Accepted: 02/03/2018] [Indexed: 06/08/2023]
Abstract
Over the last decade, there is growing incidence of male reproductive malfunctions. It has been documented that numerous environmental contaminants, such as endocrine disruptors (EDs) may adversely affect the reproductive functions of humans as well as wildlife species. The aim of this in vitro study was to examine the effects of 4-octylphenol (4-OP) on the steroidogenesis in mice Leydig cells. We evaluated the impact of this endocrine disruptor on the cholesterol levels and hormone secretion in a primary culture. Subsequently, we determined the cell viability and generation of reactive oxygen species (ROS) following 4-OP treatment. Isolated mice Leydig cells were cultured in the presence of different 4-OP concentrations (0.04-5.0 μg/mL) and 1 mM cyclic adenosine-monophosphate during 44 h. Cholesterol levels were determined from the culture medium using photometry. Quantification of steroid secretion was performed by enzyme-linked immunosorbent assay. The cell viability was assessed using the metabolic activity assay, while ROS production was assessed by the chemiluminescence technique. Slightly increased cholesterol levels were recorded following exposure to the whole applied range of 4-OP, without significant changes (P>0.05). In contrast, the secretion of steroid hormones, specifically dehydroepiandrosterone, androstenedione, and testosterone was decreased following exposure to 4-OP. Experimental doses of 4-OP did not affect cell viability significantly; however a moderate decrease was recorded following the higher doses (2.5 and 5.0 μg/mL) of 4-OP. Furthermore, relative treatment of 4-OP (5.0 μg/mL) caused a significant (P < 0.001) ROS overproduction in the exposed cells.
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Affiliation(s)
- Tomas Jambor
- Department of Animal Physiology, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture, Nitra, Tr. A. Hlinku 2, 94976, Nitra, Slovak Republic.
| | - Hana Greifova
- Department of Animal Physiology, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture, Nitra, Tr. A. Hlinku 2, 94976, Nitra, Slovak Republic.
| | - Anton Kovacik
- Department of Animal Physiology, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture, Nitra, Tr. A. Hlinku 2, 94976, Nitra, Slovak Republic.
| | - Eva Kovacikova
- AgroBioTech Research Centre, Slovak University of Agriculture, Nitra, Tr. A. Hlinku 2, 94976, Nitra, Slovak Republic.
| | - Eva Tvrda
- Department of Animal Physiology, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture, Nitra, Tr. A. Hlinku 2, 94976, Nitra, Slovak Republic.
| | - Zsolt Forgacs
- Independent Researcher, Baross u. 135/AVI/3, H-1089, Budapest, Hungary.
| | - Peter Massanyi
- Department of Animal Physiology, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture, Nitra, Tr. A. Hlinku 2, 94976, Nitra, Slovak Republic.
| | - Norbert Lukac
- Department of Animal Physiology, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture, Nitra, Tr. A. Hlinku 2, 94976, Nitra, Slovak Republic.
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288
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Engelhardt S, Sadek A, Duirk S. Rejection of trace organic water contaminants by an Aquaporin-based biomimetic hollow fiber membrane. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2017.12.061] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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289
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Wahlberg A. Exposed Biologies and the Banking of Reproductive Vitality in China. SCIENCE TECHNOLOGY AND SOCIETY 2018. [DOI: 10.1177/0971721818762895] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The looming figures of smog-choked cities, cancer villages and contaminated food have become iconic of a modernising China: the tragic, perhaps unavoidable, side effects of a voracious economy. In this article, I examine how the sperm bank—jingzi ku—in China has emerged quite literally as a sanctuary of vitality amidst concerns around food safety, air and water pollution, rising infertility and declining population quality. As a twist on Margaret Lock’s concept of ‘local biologies’, I argue that ‘exposed biologies’ have become a matter of concern in China in ways that have corroborated a place for hi-tech sperm banks within China’s restrictive reproductive complex. Exposed biologies are a side effect of modernisation processes, as industrially manufactured chemicals are increasingly held culpable for a range of pathologies, from cancers to metabolic diseases, disorders of sex development and infertility. Amidst concerns that pollution and modern lifestyles are deteriorating sperm quality in China, the sperm bank stands out as a repository of screened, purified and quality-controlled vitality, and as such sperm banking can be seen as a form of reproductive insurance, not only for individuals but also for the nation.
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290
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DNA methylation and transcriptome aberrations mediated by ERα in mouse seminal vesicles following developmental DES exposure. Proc Natl Acad Sci U S A 2018; 115:E4189-E4198. [PMID: 29666266 DOI: 10.1073/pnas.1719010115] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Early transient developmental exposure to an endocrine active compound, diethylstilbestrol (DES), a synthetic estrogen, causes late-stage effects in the reproductive tract of adult mice. Estrogen receptor alpha (ERα) plays a role in mediating these developmental effects. However, the developmental mechanism is not well known in male tissues. Here, we present genome-wide transcriptome and DNA methylation profiling of the seminal vesicles (SVs) during normal development and after DES exposure. ERα mediates aberrations of the mRNA transcriptome in SVs of adult mice following neonatal DES exposure. This developmental exposure impacts differential diseases between male (SVs) and female (uterus) tissues when mice reach adulthood due to most DES-altered genes that appear to be tissue specific during mouse development. Certain estrogen-responsive gene changes in SVs are cell-type specific. DNA methylation dynamically changes during development in the SVs of wild-type (WT) and ERα-knockout (αERKO) mice, which increases both the loss and gain of differentially methylated regions (DMRs). There are more gains of DMRs in αERKO compared with WT. Interestingly, the methylation changes between the two genotypes are in different genomic loci. Additionally, the expression levels of a subset of DES-altered genes are associated with their DNA methylation status following developmental DES exposure. Taken together, these findings provide an important basis for understanding the molecular and cellular mechanism of endocrine-disrupting chemicals (EDCs), such as DES, during development in the male mouse tissues. This unique evidence contributes to our understanding of developmental actions of EDCs in human health.
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291
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Vilela CLS, Bassin JP, Peixoto RS. Water contamination by endocrine disruptors: Impacts, microbiological aspects and trends for environmental protection. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 235:546-559. [PMID: 29329096 DOI: 10.1016/j.envpol.2017.12.098] [Citation(s) in RCA: 111] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 12/22/2017] [Accepted: 12/25/2017] [Indexed: 05/12/2023]
Abstract
Hormone active agents constitute a dangerous class of pollutants. Among them, those agents that mimic the action of estrogens on target cells and are part of the group of endocrine-disruptor compounds (EDCs) are termed estrogenic EDCs, the main focus of this review. Exposure to these compounds causes a number of negative effects, including breast cancer, infertility and animal hermaphroditism. However, especially in underdeveloped countries, limited efforts have been made to warn people about this serious issue, explain the methods of minimizing exposure, and develop feasible and efficient mitigation strategies at different levels and in various environments. For instance, the use of bioremediation processes capable of transforming EDCs into environmentally friendly compounds has been little explored. A wide diversity of estrogen-degrading microorganisms could be used to develop such technologies, which include bioremediation processes for EDCs that could be implemented in biological filters for the post-treatment of wastewater effluent. This review describes problems associated with EDCs, primarily estrogenic EDCs, including exposure as well as the present status of understanding and the effects of natural and synthetic hormones and estrogenic EDCs on living organisms. We also describe potential biotechnological strategies for EDC biodegradation, and suggest novel treatment approaches for minimizing the persistence of EDCs in the environment.
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Affiliation(s)
- Caren Leite Spindola Vilela
- Department of General Microbiology, Institute of Microbiology Paulo de Goes, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - João Paulo Bassin
- Chemical Engineering Program, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Raquel Silva Peixoto
- Department of General Microbiology, Institute of Microbiology Paulo de Goes, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil; IMAM-AquaRio - Rio de Janeiro Marine Aquarium Research Center, Rio de Janeiro, Brazil.
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292
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Haggard DE, Noyes PD, Waters KM, Tanguay RL. Transcriptomic and phenotypic profiling in developing zebrafish exposed to thyroid hormone receptor agonists. Reprod Toxicol 2018; 77:80-93. [PMID: 29458080 PMCID: PMC5878140 DOI: 10.1016/j.reprotox.2018.02.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Revised: 01/15/2018] [Accepted: 02/13/2018] [Indexed: 02/08/2023]
Abstract
There continues to be a need to develop in vivo high-throughput screening (HTS) and computational methods to screen chemicals for interaction with the estrogen, androgen, and thyroid pathways and as complements to in vitro HTS assays. This study explored the utility of an embryonic zebrafish HTS approach to identify and classify endocrine bioactivity using phenotypically-anchored transcriptome profiling. Transcriptome analysis was conducted on zebrafish embryos exposed to 25 estrogen-, androgen-, or thyroid-active chemicals at concentrations that elicited adverse malformations or mortality at 120 h post-fertilization in 80% of animals exposed. Analysis of the top 1000 significant differentially expressed transcripts and developmental toxicity profiles across all treatments identified a unique transcriptional and phenotypic signature for thyroid hormone receptor agonists. This unique signature has the potential to be used as a tiered in vivo HTS and may aid in identifying chemicals that interact with the thyroid hormone receptor.
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Affiliation(s)
- Derik E Haggard
- Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, OR, United States
| | - Pamela D Noyes
- Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, OR, United States; Current: National Center for Environmental Assessment, Office of Research and Development, U.S. Environmental Protection Agency, Washington, DC, United States
| | - Katrina M Waters
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, United States
| | - Robert L Tanguay
- Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, OR, United States.
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293
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Jessl L, Scheider J, Oehlmann J. The domestic fowl (Gallus gallus domesticus) embryo as an alternative for mammalian experiments - Validation of a test method for the detection of endocrine disrupting chemicals. CHEMOSPHERE 2018; 196:502-513. [PMID: 29329082 DOI: 10.1016/j.chemosphere.2017.12.131] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 12/20/2017] [Accepted: 12/21/2017] [Indexed: 06/07/2023]
Abstract
In recent decades the embryo of Gallus g. domesticus has been widely used as a model for the study of early sexual development and the potential impact of substances affecting development, including endocrine disrupting chemicals (EDCs). Since there is no standardized procedure available for experiments with the chicken embryo, the objective of our project is to expedite the protocol to assess the potential effects of EDCs on early sexual differentiation. The main aim of the present study was to systematically investigate the natural variability of individual developmental and histological key parameters in untreated and solvent-treated control groups, since this has been insufficiently addressed so far. A further aim was to provide robust values for all parameters investigated in control and substance experiments, using two known estrogenic compounds, bisphenol A (75/150/300 μg/g egg) and 17α-ethinylestradiol (20 ng/g egg). On embryonic day 1 eggs were injected with the estrogenic compounds. On embryonic day 19 histological gonadal data as well as morphological parameters were noted. In baseline experiments with control groups the selected endpoints showed reproducible results with low variabilities. Furthermore, gonadal endpoints responded sensitively to the treatment with the two model EDCs. Thus, these endpoints are recommended for the assessment of suspected EDCs in which the values provided for all parameters can serve as validity criteria in future experiments. The embryo of G. domesticus has shown to be a suitable alternative to currently accepted mammalian bioassays for the impact assessment of EDCs on reproductive tissues.
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Affiliation(s)
- Luzie Jessl
- Goethe University Frankfurt am Main, Institute for Ecology, Evolution and Diversity, Department Aquatic Ecotoxicology, Max-von-Laue-Str. 13, 60438 Frankfurt am Main, Germany.
| | - Jessica Scheider
- Goethe University Frankfurt am Main, Institute for Ecology, Evolution and Diversity, Department Aquatic Ecotoxicology, Max-von-Laue-Str. 13, 60438 Frankfurt am Main, Germany.
| | - Jörg Oehlmann
- Goethe University Frankfurt am Main, Institute for Ecology, Evolution and Diversity, Department Aquatic Ecotoxicology, Max-von-Laue-Str. 13, 60438 Frankfurt am Main, Germany.
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294
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Durmaz E, Erkekoglu P, Asci A, Akçurin S, Bircan İ, Kocer-Gumusel B. Urinary phthalate metabolite concentrations in girls with premature thelarche. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2018; 59:172-181. [PMID: 29625387 DOI: 10.1016/j.etap.2018.03.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 03/07/2018] [Accepted: 03/12/2018] [Indexed: 06/08/2023]
Abstract
In girls, breast development before eight years of age is called "premature thelarche (PT)". There are few studies in literature that show the interaction between PT and phthalate exposure. The aim of this study was to determine the urinary levels of di-(2-ethylhexyl) phthalate (DEHP) metabolites and other phthalate metabolites in girls with PT. PT group consisted of 29 newly diagnosed subjects. Control group comprised of healthy age-matched girls (n = 25). Urinary phthalate metabolite concentrations were measured by liquid chromatography/tandem mass spectroscopy (LC-MS/MS). The urinary concentrations of mono-(2-ethyl-hexyl)phthalate (MEHP) in the PT group (33.96 ± 6.88 μg/g creatinine) were found to be significantly higher compared to control group (11.54 ± 1.39 μg/g creatinine, p = 0.002). In PT group, %MEHP was also markedly higher vs. control (17.84 ± 3.31 vs. 6.44 ± 1.13, p = 0.001). Our results suggest that DEHP is more efficiently converted to MEHP in girls with PT, the importance of which needs to be further elucidated.
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Affiliation(s)
- Erdem Durmaz
- Akdeniz University, Faculty of Medicine, Department of Pediatric Endocrinology, Antalya, Turkey.
| | - Pinar Erkekoglu
- Hacettepe University, Faculty of Pharmacy, Department of Toxicology, Ankara, Turkey.
| | - Ali Asci
- Hacettepe University, Faculty of Pharmacy, Department of Toxicology, Ankara, Turkey; Atatürk University, Faculty of Pharmacy, Department of Toxicology, Erzurum, Turkey.
| | - Sema Akçurin
- Akdeniz University, Faculty of Medicine, Department of Pediatric Endocrinology, Antalya, Turkey.
| | - İffet Bircan
- Akdeniz University, Faculty of Medicine, Department of Pediatric Endocrinology, Antalya, Turkey.
| | - Belma Kocer-Gumusel
- Hacettepe University, Faculty of Pharmacy, Department of Toxicology, Ankara, Turkey.
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295
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Akar Y, Ahmad N, Khalıd M. The effect of cadmium on the bovine in vitro oocyte maturation and early embryo development. Int J Vet Sci Med 2018; 6:S73-S77. [PMID: 30761325 PMCID: PMC6161866 DOI: 10.1016/j.ijvsm.2018.03.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 03/01/2018] [Accepted: 03/01/2018] [Indexed: 01/27/2023] Open
Abstract
Common pollutants such as heavy metals and cadmium is among those with high environmental concerns. In vivo studies had shown that cadmium (Cd) causes oocyte degeneration and embryo mortality, and lowers pregnancy rates in mammals. However, there is limited information available about direct effects of Cd on oocyte maturation and/or embryo development. This study was aimed to investigate if Cd has any effect on the oocyte maturation and/or embryo development in vitro. Bovine COCs were collected from the slaughter house and cultured for 24 h in serum-free media only (Controls) or supplemented with 0.2, 2.0 and 20.0 μM CdCl2. At 24 h cumulus cell expansion was assessed in all COCs. COCs were either denuded and stained for determination of nuclear maturation or fertilized for assessment of subsequent embryo development. Cd at the lowest concentration (0.2 μM) did not affect any of the parameters studied. However, at higher concentrations (2.0 and 20.0 μM) it significantly (P < 0.05) reduced the percentage of fully-expanded COCs and significantly (P < 0.05) increased the percentage of partially and/or non-expanded COCs compared to controls and 0.2 μM. Cadmium at higher concentrations (2.0 and 20.0 μM) also significantly (P < 0.01) reduced the percentage of oocytes reaching metaphase II stage compared to controls and 0.2 μM. Post-fertilization cleavage rate in presumptive zygotes and blastocyst development significantly (P < 0.05) reduced 0.2, 2.0 and 20.0 μM CdCl2 compared to the controls (0.0 μM). In conclusion, these results suggest that Cd had direct detrimental effects on the bovine oocyte maturation and its developmental competence.
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Affiliation(s)
- Yaşar Akar
- Deparment of Obstetrics and Gynaecology, Faculty of Veterinary Medicine, University of Erciyes, Talas, Kayseri, Turkey
| | - Naveed Ahmad
- Deparment of Environmental Sciences, COMSATS Institute of Information Technology, Vehari, Pakistan
| | - Muhammad Khalıd
- Department of Pathobiology and Population Sciences, The Royal Veterinary College, University of London, London, UK
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296
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Trego ML, Hoh E, Kellar NM, Meszaros S, Robbins MN, Dodder NG, Whitehead A, Lewison RL. Comprehensive Screening Links Halogenated Organic Compounds with Testosterone Levels in Male Delphinus delphis from the Southern California Bight. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:3101-3109. [PMID: 29397698 PMCID: PMC6301072 DOI: 10.1021/acs.est.7b04652] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
While environmental pollutants have been associated with changes in endocrine health in cetaceans, efforts to link contaminant exposure with hormones have largely been limited to a list of known, targeted contaminants, overlooking minimally characterized or unknown compounds of emerging concern. To address this gap, we analyzed a suite of potential endocrine disrupting halogenated organic compounds (HOCs) in blubber from 16 male short-beaked common dolphins ( Delphinus delphis) with known maturity status collected from fishery bycatch in the Southern California Bight. We employed a suspect screening mass spectrometry-based method to investigate a wide range of HOCs that were previously observed in cetaceans from the same region. Potential endocrine effects were assessed through the measurement of blubber testosterone. We detected 167 HOCs, including 81 with known anthropogenic sources, 49 of unknown origin, and 37 with known natural sources. The sum of 11 anthropogenic and 4 unknown HOC classes were negatively correlated with blubber testosterone. Evidence suggests that elevated anthropogenic HOC load contributes to impaired testosterone production in mature male D. delphis. The application of this integrative analytical approach to cetacean contaminant analysis allows for inference of the biological consequences of accumulation of HOCs and prioritization of compounds for future environmental toxicology research.
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Affiliation(s)
- Marisa L. Trego
- Department of Biology, San Diego State University, 5500 Campanile Dr., San Diego, CA, 92182, USA
- Department of Environmental Toxicology, University of California Davis, 1 Shields Avenue, Davis, CA, 95616, USA
- Corresponding Author, Phone: (858) 546-7066
| | - Eunha Hoh
- Graduate School of Public Health, San Diego State University, 5500 Campanile Dr., San Diego, CA, 92182, USA
| | - Nicholas M. Kellar
- Southwest Fisheries Science Center, MMTD, NMFS, NOAA, 8901 La Jolla Shores Dr., La Jolla, CA, 92037, USA
| | - Sara Meszaros
- Department of Environmental Toxicology, University of California Davis, 1 Shields Avenue, Davis, CA, 95616, USA
| | - Michelle N. Robbins
- Ocean Associates, Inc., under contract to the Southwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration - USA
| | - Nathan G. Dodder
- Graduate School of Public Health, San Diego State University, 5500 Campanile Dr., San Diego, CA, 92182, USA
| | - Andrew Whitehead
- Department of Environmental Toxicology, University of California Davis, 1 Shields Avenue, Davis, CA, 95616, USA
| | - Rebecca L. Lewison
- Department of Biology, San Diego State University, 5500 Campanile Dr., San Diego, CA, 92182, USA
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297
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Hoydal KS, Jenssen BM, Letcher RJ, Dam M, Arukwe A. Hepatic phase I and II biotransformation responses and contaminant exposure in long-finned pilot whales from the Northeastern Atlantic. MARINE ENVIRONMENTAL RESEARCH 2018; 134:44-54. [PMID: 29290385 DOI: 10.1016/j.marenvres.2017.12.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 12/14/2017] [Accepted: 12/16/2017] [Indexed: 06/07/2023]
Abstract
Faroe Island pilot whales have been documented to have high body burdens of organohalogen contaminants (OHCs), including polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs), but low burdens of their respective hydroxylated metabolites (OH-PCBs and OH-PBDEs). The present study investigated the hepatic expression and/or catalytic activities of phase I and II biotransformation enzymes in relation to hepatic concentrations of target OHCs, including OH-PCBs and OH-PBDEs, in long-finned pilot whales (Globicephala melas) from the Northeastern Atlantic. CYP1A, 2B, 2E and 3A protein expressions were identified in juveniles and adult males, but not in adult females. Ethoxyresorufin-O-deethylase (EROD) activity was significantly lower in adult females than in juveniles and adult males. Using multivariate analyses to investigate relationships between biological responses and OHC concentrations, a positive relationship was identified between EROD and OHCs. The activity levels of phase II conjugating enzymes (uridine 5'-diphospho-glucuronosyltransferase [UDPGT], and glutathione S-transferase [GST]) were low. The analyses of mRNA expression did not show correlative relationships with OHC concentrations, but cyp1a and ahr transcripts were positively correlated with EROD activity. We suggest that the low concentrations of OH-PCBs and OH-PBDEs reported in pilot whales is probably due to the identified low phase I biotransformation activities in the species.
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Affiliation(s)
- Katrin S Hoydal
- Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway; Environment Agency, Traðagøta 38, FO-165, Argir, Faroe Islands.
| | - Bjørn M Jenssen
- Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway
| | - Robert J Letcher
- Ecotoxicology and Wildlife Health Division, Environment and Climate Change Canada, National Wildlife Research Centre, 1125 Colonel By Dr. (Raven Road), Carleton University, Ottawa, K1A 0H3, Canada
| | - Maria Dam
- Environment Agency, Traðagøta 38, FO-165, Argir, Faroe Islands
| | - Augustine Arukwe
- Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway
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298
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Lee DH. Evidence of the Possible Harm of Endocrine-Disrupting Chemicals in Humans: Ongoing Debates and Key Issues. Endocrinol Metab (Seoul) 2018; 33:44-52. [PMID: 29589387 PMCID: PMC5874194 DOI: 10.3803/enm.2018.33.1.44] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 02/19/2018] [Accepted: 03/05/2018] [Indexed: 12/31/2022] Open
Abstract
Evidence has emerged that endocrine-disrupting chemicals (EDCs) can produce adverse effects, even at low doses that are assumed safe. However, systemic reviews and meta-analyses focusing on human studies, especially of EDCs with short half-lives, have demonstrated inconsistent results. Epidemiological studies have insuperable methodological limitations, including the unpredictable net effects of mixtures, non-monotonic dose-response relationships, the non-existence of unexposed groups, and the low reliability of exposure assessment. Thus, despite increases in EDC-linked diseases, traditional epidemiological studies based on individual measurements of EDCs in bio-specimens may fail to provide consistent results. The exposome has been suggested as a promising approach to address the uncertainties surrounding human studies, but it is never free from these methodological issues. Although exposure to EDCs during critical developmental periods is a major concern, continuous exposure to EDCs during non-critical periods is also harmful. Indeed, the evolutionary aspects of epigenetic programming triggered by EDCs during development should be considered because it is a key mechanism for developmental plasticity. Presently, living without EDCs is impossible due to their omnipresence. Importantly, there are lifestyles which can increase the excretion of EDCs or mitigate their harmful effects through the activation of mitohormesis or xenohormesis. Effectiveness of lifestyle interventions should be evaluated as practical ways against EDCs in the real world.
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Affiliation(s)
- Duk Hee Lee
- Department of Preventive Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
- BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, Kyungpook National University, Daegu, Korea.
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299
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Critchell K, Hoogenboom MO. Effects of microplastic exposure on the body condition and behaviour of planktivorous reef fish (Acanthochromis polyacanthus). PLoS One 2018; 13:e0193308. [PMID: 29494635 PMCID: PMC5832226 DOI: 10.1371/journal.pone.0193308] [Citation(s) in RCA: 120] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2017] [Accepted: 02/08/2018] [Indexed: 12/12/2022] Open
Abstract
The effect of a pollutant on the base of the food web can have knock-on effects for trophic structure and ecosystem functioning. In this study we assess the effect of microplastic exposure on juveniles of a planktivorous fish (Acanthochromis polyacanthus), a species that is widespread and abundant on Indo-Pacific coral reefs. Under five different plastic concentration treatments, with plastics the same size as the natural food particles (mean 2mm diameter), there was no significant effect of plastic exposure on fish growth, body condition or behaviour. The amount of plastics found in the gastro-intestinal (GI) tract was low, with a range of one to eight particles remaining in the gut of individual fish at the end of a 6-week plastic-exposure period, suggesting that these fish are able to detect and avoid ingesting microplastics in this size range. However, in a second experiment the number of plastics in the GI tract vastly increased when plastic particle size was reduced to approximately one quarter the size of the food particles, with a maximum of 2102 small (< 300μm diameter) particles present in the gut of individual fish after a 1-week plastic exposure period. Under conditions where food was replaced by plastic, there was a negative effect on the growth and body condition of the fish. These results suggest plastics could become more of a problem as they break up into smaller size classes, and that environmental changes that lead to a decrease in plankton concentrations combined with microplastic presence is likely have a greater influence on fish populations than microplastic presence alone.
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Affiliation(s)
- Kay Critchell
- College of Science and Engineering, James Cook University, Townsville, Australia
- Centre for Tropical Water and Aquatic Ecosystem Research, James Cook University, Townsville, Australia
| | - Mia O. Hoogenboom
- College of Science and Engineering, James Cook University, Townsville, Australia
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Australia
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Taylor KW, Troester MA, Herring AH, Engel LS, Nichols HB, Sandler DP, Baird DD. Associations between Personal Care Product Use Patterns and Breast Cancer Risk among White and Black Women in the Sister Study. ENVIRONMENTAL HEALTH PERSPECTIVES 2018; 126:027011. [PMID: 29467107 PMCID: PMC6066348 DOI: 10.1289/ehp1480] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 01/05/2018] [Accepted: 01/05/2018] [Indexed: 05/23/2023]
Abstract
BACKGROUND Many personal care products include chemicals that might act as endocrine disruptors and thus increase the risk of breast cancer. OBJECTIVE We examined the association between usage patterns of beauty, hair, and skin-related personal care products and breast cancer incidence in the Sister Study, a national prospective cohort study (enrollment 2003-2009). METHODS Non-Hispanic black (4,452) and white women (n=42,453) were examined separately using latent class analysis (LCA) to identify groups of individuals with similar patterns of self-reported product use in three categories (beauty, skin, hair). Multivariable Cox proportional hazards models were used to estimate hazard ratios (HRs) and 95% confidence intervals (CIs) for associations between product use and breast cancer incidence. RESULTS A total of 2,326 women developed breast cancer during follow-up (average follow-up=5.4y). Among black women, none of the latent class hazard ratios was elevated, but there were <100 cases in any category, limiting power. Among white women, those classified as "moderate" and "frequent" users of beauty products had increased risk of breast cancer relative to "infrequent" users [HR=1.13 (95% CI: 1.00, 1.27) and HR=1.15 (95% CI: 1.02, 1.30), respectively]. Frequent users of skincare products also had increased risk of breast cancer relative to infrequent users [HR=1.13 (95% CI: 1.00, 1.29)]. None of the hair product classes was associated with increased breast cancer risk. The associations with beauty and skin products were stronger in postmenopausal women than in premenopausal women, but not significantly so. CONCLUSIONS This work generates novel hypotheses about personal care product use and breast cancer risk. Whether these results are due to specific chemicals or to other correlated behaviors needs to be evaluated. https://doi.org/10.1289/EHP1480.
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Affiliation(s)
- Kyla W Taylor
- Office of Health Assessment and Translation, National Toxicology Program, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Research Triangle Park, North Carolina, USA
| | - Melissa A Troester
- Department of Epidemiology, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Amy H Herring
- Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina , Chapel Hill, North Carolina, USA
- Carolina Population Center, University of North Carolina , Chapel Hill, North Carolina, USA
| | - Lawrence S Engel
- Department of Epidemiology, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Hazel B Nichols
- Department of Epidemiology, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Dale P Sandler
- Epidemiology Branch, Division of Intramural Research, NIEHS, NIH, DHHS, Research Triangle Park, North Carolina, USA
| | - Donna D Baird
- Epidemiology Branch, Division of Intramural Research, NIEHS, NIH, DHHS, Research Triangle Park, North Carolina, USA
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