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https://www.readbyqxmd.com/read/29331639/identification-of-the-disinfection-byproducts-of-bisphenol-s-and-the-disrupting-effect-on-peroxisome-proliferator-activated-receptor-gamma-ppar%C3%AE-induced-by-chlorination
#1
Sai Zheng, Jiachen Shi, Jing Zhang, Yi Yang, Jianying Hu, Bing Shao
Bisphenol S (BPS), an alternative product to bisphenol A (BPA), has been the focus of increasing public concern due to its potential endocrine disrupting effect and its adverse effects related to metabolic disorders such as obesity. The detection of its residue in drinking water supply systems suggests that BPS can be chlorinated; however, whether its endocrine disrupting effect can be disrupted by this chlorination remains unclear. In the present study, we identified the byproducts of the reaction of BPS with chlorine and assessed the effect of the main byproducts on peroxisome proliferator-activated receptor gamma (PPARγ)...
January 5, 2018: Water Research
https://www.readbyqxmd.com/read/29330934/melatonin-inhibits-the-proliferation-of-breast-cancer-cells-induced-by-bisphenol-a-via-targeting-estrogen-receptor-related-pathways
#2
Tianjiao Wang, Bowen Liu, Yanan Guan, Miaomiao Gong, Weiying Zhang, Jinjin Pan, Yanan Liu, Rui Liang, Yuhui Yuan, Lihong Ye
BACKGROUND: Background: Bisphenol A (BPA) is an estrogen-like chemical widely contained in daily supplies. There is evidence that environmental exposure to BPA could contribute to the development of hormone-related cancers. As is reported in numerous studies, melatonin, an endogenous hormone secreted by the pineal gland, could markedly inhibit estrogen-induced proliferation of breast cancer (BC) cells. In this study, we intended to reveal the effects of melatonin on BPA-induced proliferation of estrogen receptor-positive BC cells...
January 13, 2018: Thoracic Cancer
https://www.readbyqxmd.com/read/29329761/n-terminal-pro-b-type-natriuretic-peptide-for-monitoring-after-balloon-pulmonary-angioplasty-for-chronic-thromboembolic-pulmonary-hypertension
#3
Steffen D Kriechbaum, Christoph B Wiedenroth, Jan Sebastian Wolter, Regula Hütz, Moritz Haas, Andreas Breithecker, Fritz C Roller, Till Keller, Stefan Guth, Andreas Rolf, Christian W Hamm, Eckhard Mayer, Christoph Liebetrau
BACKGROUND: Balloon pulmonary angioplasty (BPA) is an emerging interventional treatment option for chronic thromboembolic pulmonary hypertension (CTEPH). The non-invasive monitoring of CTEPH patients is a clinical challenge. In this study we examined changes in N-terminal pro-B-type natriuretic peptide (NT-proBNP) in patients undergoing BPA for inoperable CTEPH and related them to peri-procedural success. METHODS: In this study we analyzed a total of 51 consecutive patients who underwent BPA treatment and completed a 6-month follow-up (6-MFU) between March 2014 and March 2017...
December 8, 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/29329262/contamination-and-risk-assessment-of-estrogens-in-livestock-manure-a-case-study-in-jiangsu-province-china
#4
Pengcheng Xu, Xian Zhou, Defu Xu, Yanbing Xiang, Wanting Ling, Mindong Chen
This study investigated the occurrence and contamination risk of estrogens in livestock manure in Jiangsu Province, China. Four estrogens-estriol (E3), 17β-estradiol (17β-E2), bisphenol A (BPA), and 17α-ethinyloestradiol (EE2)-were detected in livestock manure from hens, ducks, swine, and cows. The respective mean concentrations of each estrogen found in these manures were 289.8, 334.1, 330.3, and 33.7 μg/kg for E3; 38.6, 10.9, 52.9, and 38.8 μg/kg for 17β-E2; 63.6, 48.7, 51.9, and 11.7 μg/kg for BPA; and 14...
January 12, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29329010/uva-uvb-activation-of-hydrogen-peroxide-and-persulfate-for-advanced-oxidation-processes-efficiency-mechanism-and-effect-of-various-water-constituents
#5
Wenyu Huang, Angelica Bianco, Marcello Brigante, Gilles Mailhot
In the present work we investigate the activation efficiency of H2O2 and S2O82- using UVA and UVB radiation. Bisphenol-A (BPA) is used as model pollutants to estimate the oxidative process efficiency in simulated and real sewage treatment plant waters. Particular attention is paid to the BPA removal efficiency and to the radical mechanism involvement considering the effect of typical inorganic water constituents (carbonates and chloride ions) and organic matter. Despite a detrimental effect observed when carbonate ions are in solution using both hydrogen peroxide and persulafate, the presence of high chloride ions concentration was found to improve BPA removal using S2O82- as radical precursor...
January 4, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29325590/dynamic-changes-in-18f-borono-l-phenylalanine-uptake-in-unresectable-advanced-or-recurrent-squamous-cell-carcinoma-of-the-head-and-neck-and-malignant-melanoma-during-boron-neutron-capture-therapy-patient-selection
#6
Takahiro Morita, Hiroaki Kurihara, Kenta Hiroi, Natsuki Honda, Hiroshi Igaki, Jun Hatazawa, Yasuaki Arai, Jun Itami
BACKGROUND: We evaluated dynamic changes in 18F-borono-L-phenylalanine (18F-BPA) uptake in unresectable, advanced, or recurrent squamous cell carcinoma of the head and neck (SCC) and malignant melanoma (MM) during boron neutron capture therapy (BNCT) patient selection. METHODS: Dynamic changes in the maximum standardized uptake value (SUVmax), tumor-to-normal tissue ratio (TNR), and tumor-to-blood pool ratio (TBR) for 18F-BPA were evaluated in 20 patients with SCC and 8 patients with MM...
January 11, 2018: Radiation Oncology
https://www.readbyqxmd.com/read/29323886/bisphenol-f-disrupts-thyroid-hormone-signaling-and-postembryonic-development-in-xenopus-laevis
#7
Min Zhu, Xiaoying Chen, Yuanyuan Li, Nuoya Yin, Francesco Faiola, Zhanfen Qin, Wuji Wei
The safety of bisphenol A (BPA) alternatives has attracted much attention due to their wide use. In this study, we investigated the effects of bisphenol F (BPF), an alternative to BPA, on thyroid hormone (TH) signaling and postembryonic development in vertebrates using T3-induced and spontaneous Xenopus metamorphosis as models. We found that in the T3-induced metamorphosis assay, higher concentrations of BPF (100-10000 nM) antagonized T3-induced TH-response gene transcription and morphological changes including intestinal remodeling in a concentration-dependent manner, whereas 10 nM BPF exerted stimulatory effects on T3-induced integral metamorphosis when inhibited T3-induced TH-response gene transcription, demonstrating TH signaling disrupting effects of BPF...
January 11, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29323181/oral-exposure-of-low-dose-bisphenol-a-promotes-proliferation-of-dorsolateral-prostate-and-induces-epithelial-mesenchymal-transition-in-aged-rats
#8
Dong-Yan Huang, Cheng-Cheng Zheng, Qi Pan, Shuang-Shuang Wu, Xin Su, Lei Li, Jian-Hui Wu, Zu-Yue Sun
Bisphenol A (BPA) is a well-known endocrine disruptor compound reported to have prostate toxicity. This study aimed to assess the effect of BPA on the proliferation of dorsolateral prostate (DLP) and the expression of epithelial-mesenchymal transition (EMT)-related genes in aged rats. Male aged SD rats were treated with BPA (10.0, 30.0, and 90.0 µg/kg i.g., daily) or vehicle (i.g., daily) for 3 months. Treatment with BPA resulted in increased the expression of PCNA, DLP weight and DLP epithelial height compared with the control group (P < 0...
January 11, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29322392/effect-of-inorganic-and-organic-solutes-on-zero-valent-aluminum-activated-hydrogen-peroxide-and-persulfate-oxidation-of-bisphenol-a
#9
Idil Arslan-Alaton, Tugba Olmez-Hanci, Tugce Ozturk
The effect of varying inorganic (chloride, nitrate, sulfate, and phosphate) and organic (represented by humic acid) solutes on the removal of aqueous micropollutant bisphenol A (BPA; 8.8 μM; 2 mg/L) with the oxidizing agents hydrogen peroxide (HP; 0.25 mM) and persulfate (PS; 0.25 mM) activated using zero-valent aluminum (ZVA) nanoparticles (1 g/L) was investigated at a pH of 3. In the absence of the solutes, the PS/ZVA treatment system was superior to the HP/ZVA system in terms of BPA removal rates and kinetics...
January 10, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29318791/impact-of-balloon-pulmonary-angioplasty-on-hemodynamics-and-clinical-outcomes-in-patients-with-chronic-thromboembolic-pulmonary-hypertension-the-initial-korean-experience
#10
Woochan Kwon, Jeong Hoon Yang, Taek Kyu Park, Sung A Chang, Dong Seop Jung, Young Seok Cho, Sung Mok Kim, Tae Jung Kim, Hye Yoon Park, Seung Hyuk Choi, Duk Kyung Kim
BACKGROUND: The treatment of choice for chronic thromboembolic pulmonary hypertension (CTEPH) is pulmonary endarterectomy (PEA). However, not all patients are eligible for PEA, and some patients experience recurrence of pulmonary hypertension even after PEA. METHODS: Patients who underwent balloon pulmonary angioplasty (BPA) between December 2015 and April 2017 were enrolled from the Samsung Medical Center CTEPH registry. Enrolled patients underwent right heart catheterization, echocardiography, and 6-minute walk distance (6MWD) at baseline, 4 and 24 weeks after their first BPA session...
January 22, 2018: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/29317319/the-molecular-mechanisms-of-action-of-the-endocrine-disrupting-chemical-bisphenol-a-in-the-development-of-cancer
#11
REVIEW
Ayman E Shafei, Maggie M Ramzy, Abdelhares I Hegazy, Ahmed K Husseny, Usama G El-Hadary, Mazen M Taha, Ali A Mosa
The endocrine disrupting chemical (EDC) is an exogenous substance or mixture that alters the function of the endocrine system and consequently causes adverse effects in intact organisms. Bisphenol A (BPA), one of the most common endocrine disrupting chemicals is a carbon-based synthetic compound used in the production of water bottles, cans, and teeth suture materials. It is known to be a xenoestrogen as it interacts with estrogen receptors and acts as agonist or antagonist via estrogen receptor-dependent signaling pathways...
January 6, 2018: Gene
https://www.readbyqxmd.com/read/29315429/impact-of-oxygen-status-on-10b-bpa-uptake-into-human-glioblastoma-cells-referring-to-significance-in-boron-neutron-capture-therapy
#12
Yuki Wada, Katsumi Hirose, Takaomi Harada, Mariko Sato, Tsubasa Watanabe, Akira Anbai, Manabu Hashimoto, Yoshihiro Takai
Boron neutron capture therapy (BNCT) can potentially deliver high linear energy transfer particles to tumor cells without causing severe damage to surrounding normal tissue, and may thus be beneficial for cases with characteristics of infiltrative growth, which need a wider irradiation field, such as glioblastoma multiforme. Hypoxia is an important factor contributing to resistance to anticancer therapies such as radiotherapy and chemotherapy. In this study, we investigated the impact of oxygen status on 10B uptake in glioblastoma cells in vitro in order to evaluate the potential impact of local hypoxia on BNCT...
January 5, 2018: Journal of Radiation Research
https://www.readbyqxmd.com/read/29310425/treatment-with-phytoestrogens-reversed-triclosan-and-bisphenol-a-induced-anti-apoptosis-in-breast-cancer-cells
#13
Geum-A Lee, Kyung-Chul Choi, Kyung-A Hwang
Triclosan (TCS) and bisphenol A (BPA) are endocrine-disrupting chemicals that interfere with the hormone or endocrine system and may cause cancer. Kaempferol (Kaem) and 3,3'-diindolylmethane (DIM) are phytoestrogens that play chemopreventive roles in the inhibition of carcinogenesis and cancer progression. In this study, the influence of TCS, BPA, Kaem, and DIM on proliferation and apoptotic abilities of VM7Luc4E2 breast cancer cells were examined. MTT assay revealed that TCS (0.1-10 μM), BPA (0.1-10 μM) and E2 (0...
January 9, 2018: Biomolecules & Therapeutics
https://www.readbyqxmd.com/read/29310310/l-tyrosine-polymerization-based-ultrasensitive-multi-analyte-enzymatic-biosensor
#14
Lanjunzi Liu, Xiuzhi Kang, Chao Chen, Heping Zhang, Chenpu Chen, Qingji Xie
Novel amperometric bi-enzyme biosensor based on tyrosinase (Tyr)-catalyzed L-tyrosine polymerization to effectively immobilize Tyr and glucose oxidase (GOx) simultaneously has been developed and is demonstrated to be efficient in monitoring multi-analyte (bisphenol A (BPA), phenol, Cr(III), glucose, and Cr(VI)). For the first time, the polymer from L-tyrosine oxidation (PLT) was utilized to in-situ immobilize biomacromolecules and was demonstrated to be effective in entrapping high-load and high-activity enzymes...
March 1, 2018: Talanta
https://www.readbyqxmd.com/read/29310247/sers-strategy-based-on-the-modified-au-nanoparticles-for-highly-sensitive-detection-of-bisphenol-a-residues-in-milk
#15
Libin Yang, Yongliang Chen, Yu Shen, Ming Yang, Xiuling Li, Xiaoxia Han, Xin Jiang, Bing Zhao
Bisphenol A (BPA) is a highly toxic chemical, and its residue in milk product is threatening people's health due to its possible leaching from the packagings and cans with BPA coating. In this work, halides modified Au nanoparticles (NPs) as the modification substrates were first designed for rapid and sensitive determination of BPA residue in real milk by SERS method with the assistance of aggregation agents (Zn2+). It can be concluded that Au NPs modification substrate with assistance of the aggregation agent can remarkably improve the detection sensitivity of BPA residue, which can significantly enhance the SERS signal of BPA and achieve the trace-level detection of BPA residue...
March 1, 2018: Talanta
https://www.readbyqxmd.com/read/29310216/an-on-line-solid-phase-extraction-disc-packed-with-a-phytic-acid-induced-3d-graphene-based-foam-for-the-sensitive-hplc-pda-determination-of-bisphenol-a-migration-in-disposable-syringes
#16
Qiuhong Yao, Yufeng Feng, Connieal Tan, Shujun Xia, Li Zhao, Shuya Wang, Yiru Wang, Xi Chen
In this study, an on-line SPE-disc filled with phytic acid induced 3D graphene-based foam (PAGF) has been applied to the determination of the migration of bisphenol A (BPA) in disposable syringes. The approach is of quick, easy, sensitive and environmentally-friendly. Experimental conditions were investigated and optimized including the character of enriched material and the amount of migrated BPA under different temperature, time and pH conditions. The experimental results reveal that the approach presents a wide linear range between the signal response and the concentration of BPA from 1 to 1000ngmL-1, as well as the detection limit of 0...
March 1, 2018: Talanta
https://www.readbyqxmd.com/read/29308885/comparative-study-on-temperature-dependent-co2-sorption-behaviors-of-two-isostructural-n-oxide-functionalized-3d-dynamic-microporous-mofs
#17
Wen-Qian Zhang, Rui-Dong Wang, Zi-Bo Wu, Yi-Fan Kang, Yan-Ping Fan, Xi-Qiang Liang, Ping Liu, Yao-Yu Wang
By functionalization of the achiral carboxylate-based pyridine-N ligand 2,2'-bipyridine-3,3'-dicarboxylate (H2bpda) with N-oxide groups, the axially chiral ligand 2,2'-bipyridine-3,3'-dicarboxylate 1,1'-dioxide (H2bpdado) has been obtained. On the basis of H2bpdado and auxiliary N-donor ligands, two isostructural 3D dynamic porous Cu(II) metal-organic frameworks (MOFs), {[Cu0.5(bpdado)0.5(L)0.5]·3H2O}n (L = 1,2-bis(4-pyridyl)ethane (bpa), trans-1,2-bis(4-pyridyl)ethene (bpe) for 1 and 2, respectively), have been synthesized, which contain N-oxide "open donor sites" (ODSs) and carboxyl sites on the pore surfaces...
January 8, 2018: Inorganic Chemistry
https://www.readbyqxmd.com/read/29308872/porous-polycalix-4-arenes-for-fast-and-efficient-removal-of-organic-micropollutants-from-water
#18
Dinesh Shetty, Ilma Jahovic, Jesus Raya, Zouhair Asfari, John-Carl Olsen, Ali Trabolsi
Organic micropollutants are hazards to the environment and human health. Conventional technologies are often inefficient at removing them from wastewater. For example, commercial activated carbon (AC) exhibits slow uptake rates, limited capacities, and is costly to regenerate. Here, we report the utility of porous calix[4]arene-based materials, CalPn (n = 2-4), for water purification. Calixarenes are a common motif in supramolecular chemistry but have rarely been incorporated into extended, porous networks such as organic polymers...
January 8, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29308453/bisphenol-a-substitutes-and-obesity-in-us-adults-analysis-of-a-population-based-cross-sectional-study
#19
Buyun Liu, Hans-Joachim Lehmler, Yangbo Sun, Guifeng Xu, Yuewei Liu, Geng Zong, Qi Sun, Frank B Hu, Robert B Wallace, Wei Bao
Background: Bisphenol F (BPF) and bisphenol S (BPS) are increasingly used to substitute bisphenol A (BPA), a widespread environmental endocrine disruptor and putative obesogen. However, studies on effects of BPF and BPS on obesity in humans are lacking. We examined the associations of BPA, BPF, and BPS exposure with obesity in U.S. adults. Methods: We included 1,521 participants aged 20 years or older from a cross-sectional study, the National Health and Nutrition Examination Survey 2013-2014...
June 2017: Lancet. Planetary Health
https://www.readbyqxmd.com/read/29307715/bisphenol-a-stimulates-adrenal-cortical-cell-proliferation-via-er%C3%AE-mediated-activation-of-the-sonic-hedgehog-signalling-pathway
#20
Samantha Medwid, Haiyan Guan, Kaiping Yang
We previously demonstrated that prenatal exposure to bisphenol A (BPA) resulted in increased adrenal gland weight independent of changes in plasma ACTH levels in adult mouse offspring. This finding suggested that BPA exposure likely had a direct effect on adrenal development. Given that (1) sonic hedgehog (Shh) signaling is essential for adrenal development; (2) deletion of the Shh gene in mice results in adrenal hypoplasia; (3) BPA is known to signal through estrogen receptor β (ERβ); and (4) ERβ is highly expressed in adrenal glands; we hypothesized that BPA stimulates adrenal cell proliferation via ERβ-mediated activation of the Shh pathway...
January 4, 2018: Journal of Steroid Biochemistry and Molecular Biology
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