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Bisphenol A

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https://www.readbyqxmd.com/read/29161229/sex-and-dose-specific-effects-of-maternal-bisphenol-a-exposure-on-pancreatic-islets-of-first-and-second-generation-adult-mice-offspring
#1
Amita Bansal, Cetewayo Rashid, Frances Xin, Changhong Li, Erzsebet Polyak, Anna Duemler, Tom van der Meer, Martha Stefaniak, Sana Wajid, Nicolai Doliba, Marisa S Bartolomei, Rebecca A Simmons
BACKGROUND: Exposure to the environmental endocrine disruptor bisphenol A (BPA) is ubiquitous and associated with the increased risk of diabetes and obesity. However, the underlying mechanisms remain unknown. We recently demonstrated that perinatal BPA exposure is associated with higher body fat, impaired glucose tolerance, and reduced insulin secretion in first- (F1) and second-generation (F2) C57BL/6J male mice offspring. OBJECTIVE: We sought to determine the multigenerational effects of maternal bisphenol A exposure on mouse pancreatic islets...
September 27, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/29160842/environmental-exposure-to-dioxins-dibenzofurans-bisphenol-a-and-phthalates-in-children-with-and-without-autism-spectrum-disorder-living-near-the-gulf-of-mexico
#2
Mohammad H Rahbar, Hanes M Swingle, MacKinsey A Christian, Manouchehr Hessabi, MinJae Lee, Meagan R Pitcher, Sean Campbell, Amy Mitchell, Ryan Krone, Katherine A Loveland, Donald G Patterson
Environmental exposure to organic endocrine disrupting chemicals, including dioxins, dibenzofurans, bisphenol A (BPA), and phthalates has been associated with neurodevelopmental disorders, including autism spectrum disorder (ASD). We conducted a pilot monitoring study of 30 ASD cases and 10 typically developing (TD) controls ages 2-8 years from communities along the Gulf of Mexico near Alabama, which houses 14 Superfund sites, to assess the concentrations of dioxins and dibenzofurans in serum, and BPA and phthalate ester metabolites in urine...
November 21, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29160760/identification-of-organic-compounds-in-landfill-leachate-treated-by-advanced-oxidation-processes
#3
Ana Paula Jambers Scandelai, Eliane Sloboda Rigobello, Beatriz Lopes Corso de Oliveira, Célia Regina Granhen Tavares
Landfill leachates are considered to be complex effluents of a variable composition containing many compounds which are difficult to biodegrade and is highly toxic both to the environment and to human health.For this purpose and considering the shortage of studies concerning the treatment of landfill leachates using ozone, as well as its combination with catalysts, the aim of this paper was to identify the organic compounds in the landfill leachate of Maringá, Paraná, Brazil treated with advanced oxidation processes (AOPs) of ozonation (O3), heterogeneous catalytic ozonation with TiO2 (O3/TiO2), and heterogeneous catalytic ozonation with ZnO (O3/ZnO)...
November 21, 2017: Environmental Technology
https://www.readbyqxmd.com/read/29156342/a-prospective-cohort-study-of-the-association-between-bisphenol-a-exposure-and-the-serum-levels-of-liver-enzymes-in-children
#4
Seonhwa Lee, Hye Ah Lee, Bomi Park, Hyejin Han, Bo Hyun Park, Se Young Oh, Young Sun Hong, Eun Hee Ha, Hyesook Park
BACKGROUND: Bisphenol A (BPA) is an endocrine disrupter that acts in an estrogen-like manner. Few studies have investigated the association between urinary BPA concentrations and adverse liver function. Additionally, most studies were cross-sectional in nature and included only adults. OBJECTIVES: We evaluated BPA exposure levels and prospectively explored the association between BPA exposure and liver function in children. METHODS: Data were retrieved from the ongoing prospective Ewha Birth and Growth Cohort Study...
November 17, 2017: Environmental Research
https://www.readbyqxmd.com/read/29156341/urinary-bisphenol-a-concentrations-are-associated-with-reproductive-parameters-in-young-men
#5
Evdochia Adoamnei, Jaime Mendiola, Fernando Vela-Soria, Mariana F Fernández, Nicolás Olea, Niels Jørgensen, Shanna H Swan, Alberto M Torres-Cantero
Bisphenol A (BPA) is a pervasive environmental toxicant with known reproductive effects on sperm parameters and hormone levels. Several observational studies have investigated the associations between BPA exposure and male reproductive function, but findings are inconsistent. The objective of this study was to assess the associations between urinary BPA concentrations and semen quality and reproductive hormone levels in a cross-sectional study with 215 healthy young university students (18-23 years old), investigated between 2010 and 2011 in Southern Spain (Murcia Region)...
November 17, 2017: Environmental Research
https://www.readbyqxmd.com/read/29155850/pre-pubertal-exposure-with-phthalates-and-bisphenol-a-and-pubertal-development
#6
Monika Kasper-Sonnenberg, Jürgen Wittsiepe, Katharina Wald, Holger M Koch, Michael Wilhelm
OBJECTIVE: Epidemiological studies indicate associations between childhood exposure with phthalates and bisphenol A (BPA) and the pubertal development. We examined associations between the pre-pubertal phthalate and BPA body burden and the longitudinally assessed sexual maturation of eight- to thirteen-year-old children. METHODS: We started with eight- to ten-year-old children in the baseline study and quantified phthalate metabolites and BPA in 472 urine samples (250 boys; 222 girls; mean age: 8...
2017: PloS One
https://www.readbyqxmd.com/read/29154941/in-vitro-percutaneous-absorption-and-metabolism-of-bisphenol-a-bpa-through-fresh-human-skin
#7
Frank Toner, Graham Allan, Stephen S Dimond, John M Waechter, Dieter Beyer
Bisphenol A (BPA) is a high production volume compound. It is mainly used as a monomer to make polymers for various applications including food-contact materials. The primary route of exposure to BPA in the general population is through oral intake (EFSA 2015) however, other potential sources of exposure have also been identified, such as dermal contact. In the present study, the percutaneous absorption through human skin has been investigated in an in vitro study according to OECD TG 428 (Skin Absorption: In Vitro Method)...
November 14, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/29154094/ultrasonic-enhanced-fenton-like-degradation-of-bisphenol-a-using-a-bio-synthesized-schwertmannite-catalyst
#8
Xiang Li, Yongkui Zhang, Yi Xie, Yu Zeng, Panyu Li, Tonghui Xie, Yabo Wang
Schwertmannite (Sch) was synthesized by Acidithiobacillus ferrooxidans and used as Fenton-like catalyst for bisphenol A (BPA) degradation combining with ultrasonic technology (US). Physicochemical characterizations showed that the bio-synthesized Sch particles had a pompon-like morphology with high BET surface area of 92.92m(2)/g. The degradation reaction showed a two-stage pseudo-first-order kinetic process consisting of an induction period and a followed rapid degradation period. A synergistic effect existed between US and Sch on activating H2O2 and the synergy factor was calculated to be 2...
November 12, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29153971/new-insights-into-bisphenols-removal-by-nitrogen-rich-nanocarbons-synergistic-effect-between-adsorption-and-oxidative-degradation
#9
Peiyuan Xiao, Pei Wang, Huimin Li, Qiuyun Li, Yanpeng Shi, Xi-Lin Wu, Hongjun Lin, Jianrong Chen, Xiangke Wang
In this work, nitrogen-rich graphene-like carbon sheets (N-GLCS) with high specific surface area (488.4m(2)/g), narrow pore distribution and high N-doping (18.4 at%) were prepared and applied as both adsorbent and catalyst for the removal of bisphenols. Adsorption experiments demonstrated the high adsorption capacities of the N-GLCS toward bisphenol F (BPF) (222.9mg/g), bisphenol A (BPA) (317.8mg/g), and bisphenol C (BPC) (540.4mg/g). Results showed that about 98.6% of BPA (70mg/L) was removed at pH 7.0 within 80min after the adsorption-catalytic degradation process...
November 7, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29153279/corrigendum-to-neuroprotective-role-of-ginkgo-biloba-against-cognitive-deficits-associated-with-bisphenol-a-exposure-an-animal-model-study-neurochem-int-108-2017-199-212
#10
Manar Mohammed El Tabaa, Samia Salem Sokkar, Ehab Sayed Ramadan, Inas Zakria Abd El Salam, Anis Zaid
No abstract text is available yet for this article.
November 15, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/29153082/advances-in-sensing-and-biosensing-of-bisphenols-a-review
#11
REVIEW
Dhanjai, Ankita Sinha, Lingxia Wu, Xianbo Lu, Jiping Chen, Rajeev Jain
Bisphenols (BPs) are well known endocrine disrupting chemicals (EDCs) that cause adverse effects on the environment, biotic life and human health. BPs have been studied extensively because of an increasing concern for the safety of the environment and for human health. They are major raw materials for manufacturing polycarbonates, thermal papers and epoxy resins and are considered hazardous environmental contaminants. A vast array of sensors and biosensors have been developed for the sensitive screening of BPs based on carbon nanomaterials (carbon nanotubes, fullerenes, graphene and graphene oxide), quantum dots, metal and metal oxide nanocomposites, polymer nanocomposites, metal organic frameworks, ionic liquids and molecularly imprinted polymers...
January 15, 2018: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29152682/estrogenicity-of-halogenated-bisphenol-a-in-vitro-and-in-silico-investigations
#12
Jie Zhang, Tiezhu Li, Tuoyi Wang, Cuiping Yuan, Shuning Zhong, Tianzhu Guan, Zhuolin Li, Yongzhi Wang, Hansong Yu, Quan Luo, Yongjun Wang, Tiehua Zhang
The binding interactions of bisphenol A (BPA) and its halogenated derivatives (halogenated BPAs) to human estrogen receptor α ligand binding domain (hERα-LBD) was investigated using a combined in vitro and in silico approach. First, the recombinant hERα-LBD was prepared as a soluble protein in Escherichia coli BL21(DE3)pLysS. A native fluorescent phytoestrogen, coumestrol, was employed as tracer for the fluorescence polarization assay. The results of the in vitro binding assay showed that bisphenol compounds could bind to hERα-LBD as the affinity ligands...
November 20, 2017: Archives of Toxicology
https://www.readbyqxmd.com/read/29152460/bisphenol-s-impairs-blood-functions-and-induces-cardiovascular-risks-in-rats
#13
Sanghamitra Pal, Kaushik Sarkar, Partha Pratim Nath, Mukti Mondal, Ashma Khatun, Goutam Paul
Bisphenol S (BPS) is an industrial chemical which is recently used to replace the potentially toxic Bisphenol A (BPA) in making polycarbonate plastics, epoxy resins and thermal receipt papers. The probable toxic effects of BPS on the functions of haemopoietic and cardiovascular systems have not been reported till to date. We report here that BPS depresses haematological functions and induces cardiovascular risks in rat. Adult male albino rats of Sprague-Dawley strain were given BPS at a dose level of 30, 60 and 120 mg/kg BW/day respectively for 30 days...
2017: Toxicology Reports
https://www.readbyqxmd.com/read/29150635/one-pot-synthesis-of-trifunctional-chitosan-edta-%C3%AE-cyclodextrin-polymer-for-simultaneous-removal-of-metals-and-organic-micropollutants
#14
Feiping Zhao, Eveliina Repo, Dulin Yin, Li Chen, Simo Kalliola, Juntao Tang, Evgenia Iakovleva, Kam Chiu Tam, Mika Sillanpää
The global contamination of water resources with inorganic and organic micropollutants, such as metals and pharmaceuticals, poses a critical threat to the environment and human health. Herein, we report on a bio-derived chitosan-EDTA-β-cyclodextrin (CS-ED-CD) trifunctional adsorbent fabricated via a facile and green one-pot synthesis method using EDTA as a cross-linker, for the adsorption of toxic metals and organic micropollutants from wastewater. In this system, chitosan chain is considered as the backbone, and the immobilized cyclodextrin cavities capture the organic compounds via host-guest inclusion complexation, while EDTA-groups complex metals...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29149713/adult-exposure-to-bisphenol-a-in-rare-minnow-gobiocypris-rarus-reduces-sperm-quality-with-disruption-of-testicular-aquaporins
#15
Yingying Zhang, Yongjing Guan, Ting Zhang, Cong Yuan, Yan Liu, Zaizhao Wang
Bisphenol A (BPA) is an endocrine disrupter which has adverse effects on male reproduction. Aquaporins (AQPs), well known water-selective channels, play important roles in spermatogenesis and sperm functions. However, whether AQPs participate in the process that BPA induces abnormal sperms has not been investigated to date. In the present study, adult male rare minnows Gobiocypris rarus were exposed to environmentally relevant concentrations BPA (15 and 225 μg/L) for 1, 2 and 3 weeks. Results showed that BPA exposure disrupted sperm motility, increased the percentage of abnormal sperm cells, and decreased sperm tolerance to hypotonic solution and sperm fertilization capacity...
November 8, 2017: Chemosphere
https://www.readbyqxmd.com/read/29148069/long-term-oral-exposure-to-safe-dose-of-bisphenol-a-in-association-with-high-fat-diet-stimulate-the-prostatic-lesions-in-a-rodent-model-for-prostate-cancer
#16
Camila H Facina, Silvana G P Campos, Bianca F Gonçalves, Rejane M Góes, Patricia S L Vilamaior, Sebastião R Taboga
BACKGROUND: Studies have shown that exposure to environmental chemicals known as endocrine disruptors can cause permanent changes in genital organs, such as the prostate. Among these environmental chemicals stands out bisphenol A (BPA). Another factor associated with prostate changes is the consumption of a high-fat diet. Although the relationship between the consumption of a high-fat diet and an increased risk of prostate cancer is well established, the mechanisms that lead to the establishment of this disease are not completely understood, nor the simultaneous action of BPA and high-fat diet...
November 17, 2017: Prostate
https://www.readbyqxmd.com/read/29146198/bisphenol-a-alternatives-bisphenol-s-and-bisphenol-f-interfere-with-thyroid-hormone-signaling-pathway-in%C3%A2-vitro-and-in%C3%A2-vivo
#17
Yin-Feng Zhang, Xiao-Min Ren, Yuan-Yuan Li, Xiao-Fang Yao, Chuan-Hai Li, Zhan-Fen Qin, Liang-Hong Guo
The wide use of the alternatives to bisphenol A (BPA) has raised concerns about their potential toxicities. Considering the disrupting activity of BPA on thyroid hormone (TH) signaling, we investigated whether bisphenol S (BPS) and bisphenol F (BPF), two leading alternatives, could interfere with TH signaling pathway using a series of assays in vitro and in vivo. In the fluorescence competitive binding assay, we found BPS and BPF, like BPA, bound to TH receptors (TRα and TRβ), with the binding potencies an order of magnitude lower than BPA (BPA > BPF > BPS)...
November 13, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29146078/bisphenol-a-distribution-in-serum-urine-placenta-breast-milk-and-umbilical-cord-serum-in-a-birth-panel-of-mother-neonate-pairs
#18
Jangwoo Lee, Kyungho Choi, Jeongim Park, Hyo-Bang Moon, Gyuyeon Choi, Jeong Jae Lee, Eunsook Suh, Hai-Joong Kim, So-Hee Eun, Gun-Ha Kim, Geum Joon Cho, Sung Koo Kim, Sungjoo Kim, Su Young Kim, Seunghyo Kim, Soyong Eom, Sooran Choi, Young Don Kim, Sungkyoon Kim
Bisphenol A (BPA) exposure during the perinatal and postnatal periods increases the susceptibility to disease over the life cycle. However, information on the BPA delivered to fetuses or infants via the placenta and breastfeeding is limited. We determined the BPA exposure levels in various bodily fluids and tissues of pregnant women and described fetus and infant exposures to BPA based on associations and BPA ratios in mother-neonate paired samples. Maternal serum, urine, placenta, breast milk, cord serum, and neonatal urine samples were collected from 318 mother-neonate pairs at six university hospitals in Korea...
November 13, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29145569/immune-system-an-emerging-player-in-mediating-effects-of-endocrine-disruptors-on-metabolic-health
#19
Amita Bansal, Jorge Henao Mejia, Rebecca A Simmons
The incidence of metabolic disorders like type 2 diabetes and obesity continue to increase. In addition to the well-known contributors such as food intake and sedentary lifestyle, recent research in the exposure science discipline provides new evidence that exposure to endocrine disrupting chemicals like bisphenol A and phthalates via multiple routes (food, drink and skin contact) also contribute to the increased risk of metabolic disorders. Endocrine disrupting chemicals (EDCs) can disrupt any aspect of hormone action...
November 14, 2017: Endocrinology
https://www.readbyqxmd.com/read/29145094/a-mixture-of-five-endocrine-disrupting-chemicals-modulates-concentrations-of-bisphenol-a-and-estradiol-in-mice
#20
Tyler Pollock, Rachel E Weaver, Ramtin Ghasemi, Denys deCatanzaro
Most people in developed countries are exposed to multiple endocrine-disrupting synthetic chemicals. We previously showed that a single dose of triclosan, tetrabromobisphenol A (TBBPA), butyl paraben, propyl paraben, or di(2-ethylhexyl) phthalate elevated concentrations of bisphenol A (BPA) in mice. Here we investigated whether concurrent exposure to lower doses of these five chemicals could modulate concentrations of bisphenol A (BPA) or the natural estrogen, 17β-estradiol (E2). CF1 mice were injected subcutaneously with 0...
November 7, 2017: Chemosphere
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