نتایج جستجو برای: Bisphenol-A (Diphenylpropane)

تعداد نتایج: 13431999  

Journal: :Toxicological sciences : an official journal of the Society of Toxicology 2005
Shigeyuki Kitamura Tomoharu Suzuki Seigo Sanoh Ryuki Kohta Norimasa Jinno Kazumi Sugihara Shin'ichi Yoshihara Nariaki Fujimoto Hiromitsu Watanabe Shigeru Ohta

The endocrine-disrupting activities of bisphenol A (BPA) and 19 related compounds were comparatively examined by means of different in vitro and in vivo reporter assays. BPA and some related compounds exhibited estrogenic activity in human breast cancer cell line MCF-7, but there were remarkable differences in activity. Tetrachlorobisphenol A (TCBPA) showed the highest activity, followed by bis...

2014
Oleg N. Starovoytov Yalin Liu Liuxi Tan Shizhong Yang

Bisphenol-A (4,4'-dihydroxy-2,2-diphenylpropane, BPA, or BPA-A) and its derivatives, when exposed to humans, may affect functions of multiple organs by specific binding to the human estrogen-related receptor γ (ERRγ). We carried out atomistic molecular dynamics (MD) simulations of three ligand compounds including BPA-A, 4-α-cumylphenol (BPA-C), and 2,2-diphenylpropane (BPA-D) binding to the lig...

Journal: :Organic letters 2018
David G Twigg Leonardo Baldassarre Elizabeth C Frye Warren R J D Galloway David R Spring

The first total synthesis of bussealin E, a natural product with a unique cycloheptadibenzofuran scaffold, is reported. A strategy inspired by a proposed biosynthesis was employed whereby a diphenylpropane derivative underwent an oxidative phenolic coupling to forge the tetracyclic ring system. The synthesis of the diphenylpropane featured a key sp2-sp3 Hiyama coupling between a vinyldisiloxane...

ژورنال: :مجله علمی دانشگاه علوم پزشکی گرگان 0
دکتر رستم قربانی r.ghorbani (phd) department of anatomy kermanshah university of medical sciencesنشانی : کرمانشاه ، دانشگاه علوم پزشکی کرمانشاه، دانشکده پزشکی، گروه علوم تشریح آنه محمد غراوی am.gharrvai (msc) دکتر مظفر خزاعی m.khazaei (phd) دکتر ال آقا محسن امامی aa.mohsenemami (md) دکتر علی پورمتعبد a.pourmotabbad (phd) دکتر جهانبخش قاسمی j.ghasemi (phd) دکتر پرویز صیادی

زمینه و هدف: (bpa) bisphenol a، یک زنواستروژن محیطی است که به عنوان مونومر برخی پلاستیک ها (پلی کربنات ها و اپوکسی رزین) به طور وسیعی در تولید انواع مواد وسایل از جمله مواد پر کننده دندان، ظروف یکبار مصرف و پوشش های داخلی قوطی های کنسرو استفاده می شود. این ماده به دلیل داشتن اثرات استروژنی روی سیستم تولید مثل، جز مخرب های اندوکرینی طبقه بندی می گردد. تحقیق حاضر به منظور تعیین اثر bisphenol a رو...

اعظمی گیلان, رؤیا , شکوهی, رضا , ملا محمودی, محمد ,

Background and purpose: Bisphenol A is an estrogenic substance that can cause endocrine dysfunction, which extensively enters water resources due to its large use in industry. The aim of this study was to synthesis modified magnetic nanoparticles with sodium alginate and study of its efficiency for removal of Bisphenol A from aqueous solutions using heterogeneous fenton process. Materials an...

دیانتی تیلکی, رمضانعلی , علم قلیلو, مهدیه , ویسی, فرزانه ,

Abstract Background and purpose: Bisphenol A is a harmful organic compound which is either used or produced in various industries. This compound is resistant to biodegradation. The aim of this study was to determine the photocatalytic degradation of Bisphenol A from aqueous solutions by ZnO nanoparticles. Material and methods: In this experimental study the morphology of nanoparticles was c...

Superoxide dismutase play important roles in iron-respiratory bacteria such as Geobacteraceae as an antioxidant defense, and probably an effective enzyme of electron transfer network. Regarding the application of iron-respiratory bacteria in environmental biotechnology particularly biodegradation and bioremediation, understanding the mechanism of inhibition/induction of superoxide dismutase by ...

Journal: :Letters in applied microbiology 2008
N H Oberlies C Li R J McGivney F Q Alali J R Tanner J O Falkinham

AIM To identify the source of bisphenol A (BPA) [2,2'-bis(4-hydroxyphenyl) propane] in cultures of an antibiotic-producing Bacillus sp. strain grown in polycarbonate flasks. METHODS AND RESULTS Although a culture of an antibiotic-producing Bacillus sp. strain grown in a new, rinsed polycarbonate flask yielded BPA, duplicate cultures grown in thoroughly washed polycarbonate flasks did not. Cel...

Journal: :Journal of oral rehabilitation 1996
T Li R G Craig

Fluorinated Bis-GMA was synthesized and used with other commercially available fluorinated monomers and diluents to prepare hydrophobic composites. The composites were formulated as one-paste systems and were polymerized using blue light. Mechanical properties and water-related qualities were determined. Fluorination generally improved the hydrophobicity of the composites, but there was no clea...

2012
Stephen J. Genuis Sanjay Beesoon Detlef Birkholz Rebecca A. Lobo

BACKGROUND Bisphenol A (BPA) is an ubiquitous chemical contaminant that has recently been associated with adverse effects on human health. There is incomplete understanding of BPA toxicokinetics, and there are no established interventions to eliminate this compound from the human body. Using 20 study participants, this study was designed to assess the relative concentration of BPA in three body...

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