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Endocrine disruption

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https://www.readbyqxmd.com/read/28219162/-human-exposure-and-thyroid-toxicity-of-polybrominated-diphenyl-ethers
#1
X T Shi, L M Chen, S J Wang, Y Tian
Polybrominated diphenyl ethers (PBDEs), a kind of important Brominated Flame Retardant (BFR), are widely used in electronic products, construction materials and textiles. PBDEs have been detected in many environmental media (including air, water, dust, sediment and food), many animal and human tissues. For their environmental persistence, high bioaccumulative and multiple biotoxicitiies, PBDEs have been viewed as one of the most concerned environmental Endocrine Disrupting Chemicals (EDCs) at present. Although detailed mechanisms are not clear, studies have found that PBDEs can induce toxicity to liver, endocrine system, nervous system, reproduction and immune system...
February 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28219160/-endocrine-disrupting-effects-of-drinking-water-analyzed-by-report-gene-assay
#2
X L Ding, J Zhang, Q Zhang, C H Huang, W J Zhou
No abstract text is available yet for this article.
February 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28217008/toxicogenomics-to-evaluate-endocrine-disrupting-effects-of-environmental-chemicals-using-the-zebrafish-model
#3
Karina Caballero-Gallardo, Jesus Olivero-Verbel, Jennifer L Freeman
The extent of our knowledge on the number of chemical compounds related to anthropogenic activities that can cause damage to the environment and to organisms is increasing. Endocrine disrupting chemicals (EDCs) are one group of potentially hazardous substances that include natural and synthetic chemicals and have the ability to mimic endogenous hormones, interfering with their biosynthesis, metabolism, and normal functions. Adverse effects associated with EDC exposure have been documented in aquatic biota and there is widespread interest in the characterization and understanding of their modes of action...
December 2016: Current Genomics
https://www.readbyqxmd.com/read/28216654/performance-kinetic-and-biodegradation-pathway-evaluation-of-anaerobic-fixed-film-fixed-bed-reactor-in-removing-phthalic-acid-esters-from-wastewater
#4
Ehsan Ahmadi, Samira Yousefzadeh, Mohsen Ansari, Hamid Reza Ghaffari, Ali Azari, Mohammad Miri, Alireza Mesdaghinia, Ramin Nabizadeh, Babak Kakavandi, Peyman Ahmadi, Mojtaba Yegane Badi, Mitra Gholami, Kiomars Sharafi, Mostafa Karimaei, Mahboobeh Ghoochani, Masoud Binesh Brahmand, Seyed Mohsen Mohseni, Maryam Sarkhosh, Soheila Rezaei, Hosseinali Asgharnia, Emad Dehghanifard, Behdad Jafari, Alireza Mortezapour, Vahid Kazemi Moghaddam, Mohammad Molla Mahmoudi, Nader Taghipour
Emerging and hazardous environmental pollutants like phthalic acid esters (PAEs) are one of the recent concerns worldwide. PAEs are considered to have diverse endocrine disrupting effects on human health. Industrial wastewater has been reported as an important environment with high concentrations of PAEs. In the present study, four short-chain PAEs including diallyl phthalate (DAP), diethyl phthalate (DEP), dimethyl phthalate (DMP), and phthalic acid (PA) were selected as a substrate for anaerobic fixed film fixed bed reactor (AnFFFBR)...
February 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28215500/environmental-epigenomics-current-approaches-to-assess-epigenetic-effects-of-endocrine-disrupting-compounds-edc-s-on-human-health
#5
REVIEW
Natalia Tapia-Orozco, Gerardo Santiago-Toledo, Valeria Barrón, Ana María Espinosa-García, José Antonio García-García, Roeb García-Arrazola
Environmental Epigenomics is a developing field to study the epigenetic effect on human health from exposure to environmental factors. Endocrine disrupting chemicals have been detected primarily in pharmaceutical drugs, personal care products, food additives, and food containers. Exposure to endocrine-disrupting chemicals (EDCs) has been associated with a high incidence and prevalence of many endocrine-related disorders in humans. Nevertheless, further evidence is needed to establish a correlation between exposure to EDC and human disorders...
February 10, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28212843/natural-extranuclear-androgen-receptor-ligands-as-endocrine-disruptors-of-cancer-cell-growth
#6
Marilena Kampa, George Notas, Elias Castanas
Even though the term endocrine disruption primarily designates environmental chemicals that can interfere with the action of hormones, in recent years it has been extended to include also plant derived compounds that can reach the human body, naturally, or have been identified and studied as alternative pharmaceutical agents. In fact, for a large number of them, their antihormonal action was appreciated by different traditional herbal medicines. In the present review we report the majority of the plant derived compounds that exhibit an antiandrogenic effect and the known mechanisms of action...
February 14, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28211638/the-relationship-between-ovarian-function-and-ovarian-limited-dose-in-radiotherapy-postoperation-of-ovarian-transposition-in-young-patients-with-cervical-cancer
#7
Zhenhua Du, Hui Qu
In this study, the relationship between ovarian function and ovarian limited dose in radiotherapy was evaluated in young patients with cervical cancer who underwent ovarian transposition (Fig1B). Moreover, the novel ovarian dose limit for a better preservation of ovarian function in intensity-modulated radiation therapy (IMRT) was determined. We retrospectively analyzed data from 86 patients with cervical cancer who received radical hysterectomy and ovarian transposition from January 2013 to June 2015. In agreement with the National Comprehensive Cancer Network Guidelines (NCCN) for Cervical Cancer Version 2...
February 17, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28209406/endocrine-and-physiological-effects-of-linuron-and-s-metolachlor-in-zebrafish-developing-embryos
#8
C Quintaneiro, D Patrício, S C Novais, A M V M Soares, M S Monteiro
Evaluation of the effects of linuron and S-metolachlor on apical, biochemical and transcriptional endpoints in zebrafish (Danio rerio) early life stages was the main purpose of this work. Embryos were exposed for 96h to a range of concentrations of each herbicide to determine lethal and sub-lethal effects on apical (e.g. malformations, hatching) and biochemical parameters (cholinesterase, ChE; catalase, CAT; glutathione S-transferase, GST; lipid peroxidation, LPO and lactate dehydrogenase, LDH). To evaluate endocrine disruption effects, embryos were exposed during 96h to 0...
February 13, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28208233/neonatal-exposure-to-endocrine-disrupting-chemicals-impair-learning-behaviour-by-disrupting-hippocampal-organization-in-male-swiss-albino-mice
#9
Rakesh Bhaskar, Ashish K Mishra, Banalata Mohanty
Hippocampus is highly susceptible to endocrine disrupting chemicals exposure particularly during the critical phase of brain development. In the present study, mice offspring were exposed to endocrine disruptors mancozeb (MCZ) and imidacloprid (IMI) individually (40 mg MCZ and 0.65 mg IMI/kg/day) as well as to their equimixture (40 mg MCZ + 0.65 mg IMI/kg/day) through the diet of lactating mothers from post-natal day (PND) 1 to PND 28. Half of the randomly selected male offspring were killed at PND 29 and the rest half were left unexposed and killed at PND 63...
February 16, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28208107/assessing-the-potential-for-trace-organic-contaminants-commonly-found-in-australian-rivers-to-induce-vitellogenin-in-the-native-rainbowfish-melanotaenia-fluviatilis-and-the-introduced-mosquitofish-gambusia-holbrooki
#10
Philip D Scott, Heather M Coleman, Anne Colville, Richard Lim, Benjamin Matthews, James A McDonald, Ana Miranda, Peta A Neale, Dayanthi Nugegoda, Louis A Tremblay, Frederic D L Leusch
In Australia, trace organic contaminants (TrOCs) and endocrine active compounds (EACs) have been detected in rivers impacted by sewage effluent, urban stormwater, agricultural and industrial inputs. It is unclear whether these chemicals are at concentrations that can elicit endocrine disruption in Australian fish species. In this study, native rainbowfish (Melanotaenia fluviatilis) and introduced invasive (but prevalent) mosquitofish (Gambusia holbrooki) were exposed to the individual compounds atrazine, estrone, bisphenol A, propylparaben and pyrimethanil, and mixtures of compounds including hormones and personal care products, industrial compounds, and pesticides at environmentally relevant concentrations...
February 7, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28205155/endocrine-disruptors-and-obesity
#11
REVIEW
Philippa D Darbre
PURPOSE OF REVIEW: The purpose of this review was to summarise current evidence that some environmental chemicals may be able to interfere in the endocrine regulation of energy metabolism and adipose tissue structure. RECENT FINDINGS: Recent findings demonstrate that such endocrine-disrupting chemicals, termed "obesogens", can promote adipogenesis and cause weight gain. This includes compounds to which the human population is exposed in daily life through their use in pesticides/herbicides, industrial and household products, plastics, detergents, flame retardants and as ingredients in personal care products...
February 15, 2017: Current Obesity Reports
https://www.readbyqxmd.com/read/28199414/direct-and-transgenerational-effects-of-low-doses-of-perinatal-di-2-ethylhexyl-phthalate-dehp-on-social-behaviors-in-mice
#12
Kayla M Quinnies, Erin P Harris, Rodney W Snyder, Susan S Sumner, Emilie F Rissman
Di-(2-ethylhexyl) phthalate (DEHP) is an endocrine disrupting chemical commonly used as a plasticizer in medical equipment, food packaging, flooring, and children's toys. DEHP exposure during early development has been associated with adverse neurobehavioral outcomes in children. In animal models, early exposure to DEHP results in abnormal development of the reproductive system as well as altered behavior and neurodevelopment. Based on these data, we hypothesized that developmental exposure to DEHP would decrease social interactions and increase anxiety-like behaviors in mice in a dose-dependent manner, and that the effects would persist over generations...
2017: PloS One
https://www.readbyqxmd.com/read/28196854/hypothalamic-transcriptomic-alterations-in-male-and-female-california-mice-peromyscus-californicus-developmentally-exposed-to-bisphenol-a-or-ethinyl-estradiol
#13
Sarah A Johnson, William G Spollen, Lindsey K Manshack, Nathan J Bivens, Scott A Givan, Cheryl S Rosenfeld
Bisphenol A (BPA) is an endocrine-disrupting chemical (EDC) prevalent in many household items. Rodent models and human epidemiological studies have linked this chemical to neurobehavior impairments. In California mice, developmental exposure to BPA results in sociosexual disorders at adulthood, including communication and biparental care deficits, behaviors that are primarily regulated by the hypothalamus. Thus, we sought to examine the transcriptomic profile in this brain region of juvenile male and female California mice offspring exposed from periconception through lactation to BPA or ethinyl estradiol (EE, estrogen present in birth control pills and considered a positive estrogen control for BPA studies)...
February 2017: Physiological Reports
https://www.readbyqxmd.com/read/28196088/transcriptomic-cellular-and-life-history-responses-of-daphnia-magna-chronically-exposed-to-benzotriazoles-endocrine-disrupting-potential-and-molting-effects
#14
Maeva Giraudo, Mélanie Douville, Guillaume Cottin, Magali Houde
Benzotriazoles (BZTs) are ubiquitous aquatic contaminants used in a wide range of industrial and domestic applications from aircraft deicers to dishwasher tablets. Acute toxicity has been reported in aquatic organisms for some of the BZTs but their mode of action remains unknown. The objectives of this study were to evaluate the transcriptomic response of D. magna exposed to sublethal doses of 1H-benzotriazole (BTR), 5-methyl-1H-benzotriazole (5MeBTR) and 5-chloro-1H-benzotriazole (5ClBTR) using RNA-sequencing and quantitative real-time PCR...
2017: PloS One
https://www.readbyqxmd.com/read/28193308/review-exogenous-butyrate-implications-for-the-functional-development-of-ruminal-epithelium-and-calf-performance
#15
B Niwińska, E Hanczakowska, M B Arciszewski, R Klebaniuk
The importance of the use of exogenous butyrate in calves' diets is due to its role as a factor stimulating the functional development of ruminal epithelium and improving calf performance during the transition from preruminant to ruminant status. Our review will first present results related to effects of the administration of butyrate in calves' diets on the development of ruminal epithelium toward a more effective absorption and metabolism of fermentation products from the rumen. The introduction of sodium butyrate at a level of about 0...
February 14, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28189029/disruption-of-thyroxine-and-sex-hormones-by-1-2-dibromo-4-1-2-dibromoethyl-cyclohexane-dbe-dbch-in-american-kestrels-falco-sparverius-and-associations-with-reproductive-and-behavioral-changes
#16
Sarah C Marteinson, Vince Palace, Robert J Letcher, Kim J Fernie
1,2-dibromo-4-(1,2-dibromoethyl)cyclohexane (DBE-DBCH - formerly TBECH) is an emerging brominated flame retardant (BFR) pollutant with androgen potentiating ability and other endocrine disrupting effects in birds and fish. The objectives of this study were to determine the effects of exposure to environmentally-relevant levels of DBE-DBCH on circulating levels of thyroid and sex steroid hormones in American kestrels, and if hormonal concentrations were related to previously reported changes in reproductive success and courtship behaviors...
February 8, 2017: Environmental Research
https://www.readbyqxmd.com/read/28188614/foxa2-a-novel-protein-partner-of-tumour-suppressor-menin-is-deregulated-in-mouse-and-human-men1-glucagonomas
#17
Rémy Bonnavion, Romain Teinturier, Samuele Gherardi, Emmanuelle Leteurtre, Run Yu, Martine Cordier-Bussat, Rui Du, François Pattou, Marie-Christine Vantyghem, Philippe Bertolino, Jieli Lu, Chang Xian Zhang
Foxa2, known as one of the pioneer factors, plays a crucial role in islet development and endocrine functions. Its expression and biological functions are regulated by various factors, including in particular insulin and glucagon. However, its expression and biological role in the adult pancreatic α-cells remain elusive. In the current study, we showed that Foxa2 was overexpressed in islets from α-cell-specific Men1 mutant mice, both at the transcriptional and protein levels. More importantly, immunostaining analyses detected its prominent nuclear accumulation, specifically in α-cells, at a very early stage after Men1-disruption...
February 11, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28187390/the-fate-of-pharmaceuticals-and-personal-care-products-ppcps-endocrine-disrupting-contaminants-edcs-metabolites-and-illicit-drugs-in-a-wwtw-and-environmental-waters
#18
Edward Archer, Bruce Petrie, Barbara Kasprzyk-Hordern, Gideon M Wolfaardt
A large number of emerging contaminants (ECs) are known to persist in surface waters, and create pressure on wastewater treatment works (WWTW) for their effective removal. Although a large database for the levels of these pollutants in water systems exist globally, there is still a lack in the correlation of the levels of these pollutants with possible long-term adverse health effects in wildlife and humans, such as endocrine disruption. The current study detected a total of 55 ECs in WWTW influent surface water, 41 ECs in effluent, and 40 ECs in environmental waters located upstream and downstream of the plant...
January 26, 2017: Chemosphere
https://www.readbyqxmd.com/read/28185731/phenolic-endocrine-disrupting-compounds-in-the-pearl-river-estuary-occurrence-bioaccumulation-and-risk-assessment
#19
Panpan Diao, Qi Chen, Rui Wang, Dong Sun, Zhuoping Cai, Hao Wu, Shunshan Duan
Three phenolic endocrine-disrupting compounds, 4-nonylphenol, 4-tert-octylphenol and bisphenol A, were determined in water, sediment and biota (fish, shrimp and mollusk) collected from sites along the Pearl River Estuary, China. The 4-nonylphenol, 4-tert-octylphenol and bisphenol A concentrations ranged from 1.20-3352.86ng/L in the water, <0.17-20.80ng/g dw in the sediment and <1.49-237.12ng/g dw in the biota. The concentrations of 4-nonylphenol were higher than those of 4-tert-octylphenol and bisphenol A in the water, sediment and organisms...
February 6, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28184387/controllable-preparation-of-core-shell-magnetic-covalent-organic-framework-nanospheres-for-efficient-adsorption-and-removal-of-bisphenols-in-aqueous-solution
#20
Yang Li, Cheng-Xiong Yang, Xiu-Ping Yan
We herein report a monomer-mediated in situ growth strategy for the controllable construction of porous nanospheres with a magnetic core and a tunable COF shell. The composite exhibits high stability and excellent performance for the removal of a typical class of endocrine-disrupting chemicals, bisphenol chemicals, in aqueous solution.
February 10, 2017: Chemical Communications: Chem Comm
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