ABSTRACT Endocrine disrupting chemicals (EDCs) are found in every environmental medium and are chemically diverse. Their presence in water resources can negatively impact the health of both human and wildlife. Currently, there are no mandatory screening mandates or regulations for EDC levels in complex water samples globally. Bioassays, which allow quantifying in vivo or inRead More
Rheum rhaponticum Root Extract Improves Vasomotor Menopausal Symptoms and Estrogen-Regulated Targets in Ovariectomized Rat Model
ABSTRACT Ovarian insufficiency and ovariectomy are characterized by deregulated heat loss mechanisms. Unlike hormone therapy, ERr 731 (a standardized botanical extract of Siberian rhubarb Rheum rhaponticum L. high in rhaponticin) acts like a selective estrogen receptor modulator for ERβ receptors and may offer a higher degree of safety while maintaining the desired efficacy profile. InRead More
Synthesis and evaluation of 17α-triazolyl and 9α-cyano derivatives of estradiol
ABSTRACT A variety of 17α-triazolyl and 9α-cyano derivatives of estradiol were prepared and evaluated for binding to human ERβ in both a TR-FRET assay, as well as ERβ and ERα agonism in cell-based functional assays. 9α-Cyanoestradiol (5) was nearly equipotent as estradiol as an agonist for both ERβ and ERα. The potency of the 17α-triazolylestradiolRead More
Gene Expression: Nuclear Receptors
INTRODUCTION There are four main classes of receptors, Ion channels, G-protein coupled (GPCR), receptor tyrosine kinase and soluble (also called intracellular) receptors. The first three have ligands that are mainly present in the extracellular space (water soluble ligands). The binding of ligand causes a change in the shape/function of the protein that generates a signalRead More
Structure Based Multitargeted Molecular Docking Analysis of Selected Furanocoumarins against Breast Cancer
ABSTRACT Breast cancer is one of the biggest global dilemmas and its current therapy is to target the hormone receptors by the use of partial agonists/antagonists. Potent drugs for breast cancer treatment are Tamoxifen, Trastuzumab, Paclitaxel, etc. which show adverse effects and resistance in patients. The aim of the study has been on certain phytochemicalsRead More
Bioactive Rearrangement Products from Aqueous Photolysis of Pharmaceutical Steroids
ABSTRACT In an ongoing effort to study the environmental fate of endocrine-active steroid hormones, we report the formation of phenolic rearrangement products (3 and 4) with a novel 6,5,8,5-ring system following aqueous photolysis of dienogest (1) and methyldienolone(2). The structures were established by analysis of 2D NMR and HRMS data, and that of 3 wasRead More
Quizalofop-p-ethyl induces adipogenesis in 3T3-L1 adipocytes
ABSTRACT Exposure to endocrine disrupting chemicals is an established risk factor for obesity. The most commonly used pesticide active ingredients have never been tested in an adipogenesis assay. We tested for the first time the potential of glyphosate, 2,4-dichlorophenoxyacetic acid, dicamba, mesotrione, isoxaflutole and quizalofop-p-ethyl (QpE) to induce lipid accumulation in murine 3T3-L1 adipocytes. OnlyRead More
Benzothiophene estrogen receptor modulators: Patent Application
ABSTRACT This invention is a benzothiophene estrogen receptor modulator or its pharmaceutically acceptable salt or a pharmaceutically acceptable composition thereof to treat an estrogen-related medical disorder. To view the rest of the patent application click HERE. Patent Application Number: 15/893295 Filing Date: 09 February 2018 Publication Date: 19 February 2019 Applicant & Assignee information: G1Read More
Trace organic contaminant removal in six full-scale integrated fixed-film activated sludge (IFAS) systems treating municipal wastewater
ABSTRACT Trace organic contaminants (TrOCs) often pass through conventional activated sludgewastewater treatment plants (CAS-WWTPs) and are discharged into surface waters, where they can threaten aquatic ecosystems and human health, largely due to the hormone disrupting effects of certain TrOCs. The integrated fixed-film activated sludge (IFAS) process is a cost-effective means of upgrading CAS-WWTPs by adding free-floating carrier media, which promotes biofilm formationRead More
Synthesis and evaluation of 4-cycloheptylphenols as selective Estrogen receptor-β agonists (SERBAs)
ABSTRACT A short and efficient route to 4-(4-hydroxyphenyl)cycloheptanemethanol was developed, which resulted in the preparation of a mixture of 4 stereoisomers. The stereoisomers were separated by preparative HPLC, and two of the stereoisomers identified by X-ray crystallography. The stereoisomers, as well as a small family of 4-cycloheptylphenol derivatives, were evaluated as estrogen receptor-beta agonists. The lead compound, 4-(4-hydroxyphenyl)cycloheptanemethanol was selective for activatingRead More