A89502

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Exceptional activity of tannic acid among naturally occurring plant phenols in protecting against 7,12-dimethylbenz(a)anthracene-, benzo(a)pyrene-, 3-methylcholanthrene-, and N-methyl-N-nitrosourea-induced skin tumorigenesis in mice.

H Mukhtar et al.

Cancer research, 48(9), 2361-2365 (1988-05-01)

Our recent studies have shown that naturally occurring dietary plant phenols such as tannic acid, quercetin, myricetin, and anthraflavic acid are capable of inhibiting polycyclic aromatic hydrocarbon (PAH) metabolism and subsequent PAH-DNA adduct formation in epidermis of SENCAR mice (M.

Determination of the optical GAP in thin films of amorphous dilithium phthalocyanine using the Tauc and Cody models.

María Elena Sánchez-Vergara et al.

Molecules (Basel, Switzerland), 17(9), 10000-10013 (2012-08-28)

Semiconducting thin films were grown on quartz substrates and crystalline silicon wafers, using dilithium phthalocyanine and the organic ligands 2,6-dihydroxyanthraquinone and 2,6-diaminoanthraquinone as the starting compounds. The films, thus obtained, were characterized by Fourier Transform infrared (FTIR), fast atomic bombardment

Extrapolation of in vitro antimutagenicity to the in vivo situation: the case for anthraflavic acid.

C Ioannides et al.

Basic life sciences, 61, 103-110 (1993-01-01)

Microbial Synthesis of Non-Natural Anthraquinone Glucosides Displaying Superior Antiproliferative Properties.

Trang Thi Huyen Nguyen et al.

Molecules (Basel, Switzerland), 23(9) (2018-08-30)

Anthraquinones, naturally occurring bioactive compounds, have been reported to exhibit various biological activities, including anti-inflammatory, antiviral, antimicrobial, and anticancer effects. In this study, we biotransformed three selected anthraquinones into their novel O-glucoside derivatives, expressing a versatile glycosyltransferase (YjiC) from Bacillus

Alizarin and Chrysazin Inhibit Biofilm and Hyphal Formation by

Ranjith Kumar Manoharan et al.

Frontiers in cellular and infection microbiology, 7, 447-447 (2017-11-01)

Coupled In Situ NMR and EPR Studies Reveal the Electron Transfer Rate and Electrolyte Decomposition in Redox Flow Batteries.

Evan Wenbo Zhao et al.

Journal of the American Chemical Society, 143(4), 1885-1895 (2021-01-22)

We report the development of in situ (online) EPR and coupled EPR/NMR methods to study redox flow batteries, which are applied here to investigate the redox-active electrolyte, 2,6-dihydroxyanthraquinone (DHAQ). The radical anion, DHAQ3-•, formed as a reaction intermediate during the

Anthraflavic acid inhibits the mutagenicity of the food mutagen IQ: mechanism of action.

A D Ayrton et al.

Mutation research, 207(3-4), 121-125 (1988-03-01)

The ability of anthraflavic acid to inhibit the mutagenicity of IQ was investigated using the Ames test and employing hepatic activation systems from Aroclor 1254-pretreated rats. Incorporation of anthraflavic acid into the S9 mix caused a concentration-dependent decrease in the

Electrical and optical properties of copper and nickel molecular materials with tetrabenzo [b,f,j,n] [1,5,9,13] tetraazacyclohexadecine thin films grown by the vacuum thermal evaporation technique.

A Rodriguez et al.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 75(1), 479-485 (2009-12-08)

Semiconducting molecular-material thin-films of tetrabenzo (b,f,j,n) [1,5,9,13] tetraazacyclohexadecine copper(II) and nickel(II) bisanthraflavates have been prepared by using vacuum thermal evaporation on Corning glass substrates and crystalline silicon wafers. The films thus obtained were characterized by infrared spectroscopy (FTIR), atomic force

A compact optical instrument with artificial neural network for pH determination.

Sonia Capel-Cuevas et al.

Sensors (Basel, Switzerland), 12(5), 6746-6763 (2012-07-11)

The aim of this work was the determination of pH with a sensor array-based optical portable instrument. This sensor array consists of eleven membranes with selective colour changes at different pH intervals. The method for the pH calculation is based

High mobility emissive organic semiconductor.

Jie Liu et al.

Nature communications, 6, 10032-10032 (2015-12-02)

The integration of high charge carrier mobility and high luminescence in an organic semiconductor is challenging. However, there is need of such materials for organic light-emitting transistors and organic electrically pumped lasers. Here we show a novel organic semiconductor, 2,6-diphenylanthracene

Mutagenicity of anthraquinone and hydroxylated anthraquinones in the Ames/Salmonella microsome system.

D F Liberman et al.

Applied and environmental microbiology, 43(6), 1354-1359 (1982-06-01)

The mutagenicity of anthracene, anthraquinone, and four structurally similar compounds of each was evaluated in the Ames/Salmonella microsome assay. Anthraquinone was shown to be mutagenic for strains TA1537, TA1538, and TA98 in the absence of rat liver homogenate. The four

Phytoestrogens from the roots of Polygonum cuspidatum (Polygonaceae): structure-requirement of hydroxyanthraquinones for estrogenic activity.

H Matsuda et al.

Bioorganic & medicinal chemistry letters, 11(14), 1839-1842 (2001-07-19)

The methanolic extract from the roots of Polygonum (P.) cuspidatum was found to enhance cell proliferation at 30 or 100 microg/mL in MCF-7, an estrogen-sensitive cell line. By bioassay-guided separation from P. cuspidatum with the most potent activity, emodin and

Synthesis of tetrahydroxy-?-extended tetrathiafulvalenes as new supramolecular redox building blocks

Diaz Marta C, et al.

Tetrahedron Letters, 44(5), 945-948 (2003)

Anthraflavic acid is a potent and specific inhibitor of cytochrome P-448 activity.

A D Ayrton et al.

Biochimica et biophysica acta, 916(3), 328-331 (1987-12-18)

Consideration of the computer-optimised dimensions of anthraflavic acid indicates that it is essentially a planar molecule with a large area/depth ratio, that would preferentially interact with the polycyclic aromatic hydrocarbon-induced family of cytochrome P-450 proteins (cytochromes P-448). Anthraflavic acid was

Biosynthesis of drug glucuronides for use as authentic standards.

Matthew G Soars et al.

Journal of pharmacological and toxicological methods, 47(3), 161-168 (2003-03-12)

Glucuronidation by the uridine diphosphate glucuronosyltransferases (UGTs) plays a pivotal role in the clearance mechanism of both xenobiotics and endobiotics. The detection of glucuronides at low micromolar concentrations is required to accurately model in vitro enzyme kinetics and in vivo

Inhibition of polycyclic aromatic hydrocarbon-DNA adduct formation in epidermis and lungs of SENCAR mice by naturally occurring plant phenols.

M Das et al.

Cancer research, 47(3), 767-773 (1987-02-01)

Naturally occurring plant phenols such as tannic acid, quercetin, myricetin, and anthraflavic acid are known to inhibit the mutagenicity of several bay-region diol-epoxides of polycyclic aromatic hydrocarbons (PAHs). The binding of bay-region diol-epoxides of PAHs to target tissue DNA is

A Mass Spectrometry-Based Approach for Characterization of Red, Blue, and Purple Natural Dyes.

Katarzyna Lech et al.

Molecules (Basel, Switzerland), 25(14) (2020-07-19)

Effective analytical approaches for the identification of natural dyes in historical textiles are mainly based on high-performance liquid chromatography coupled with spectrophotometric detection and tandem mass spectrometric detection with electrospray ionization (HPLC-UV-Vis-ESI MS/MS). Due to the wide variety of dyes

Induction of rat hepatic cytochrome P-450 I proteins by the antimutagen anthraflavic acid.

A D Ayrton et al.

Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 26(11-12), 909-915 (1988-11-01)

Administration of the antimutagen anthraflavic acid to rats gave rise to significant increases in the hepatic microsomal O-deethylations of ethoxyresorufin and ethoxycoumarin, but not in the O-dealkylation of pentoxyresorufin nor in cytosolic glutathione S-transferase activity. Immunoblot studies of solubilized microsomes

Regioselective synthesis of novel functionalized phosphanylidene anthra [2, 1-b] furan derivatives under solvent-free conditions

Nourmohammadian F and Gholami MD

Phosphorus, Sulfur, and Silicon and the Related Elements, 185(2), 340-346 (2010)

Inhibition of epidermal xenobiotic metabolism in SENCAR mice by naturally occurring plant phenols.

M Das et al.

Cancer research, 47(3), 760-766 (1987-02-01)

Naturally occurring plant phenols such as tannic acid, quercetin, myricetin, and anthraflavic acid have been shown to inhibit the mutagenicity of several bay-region diol-epoxides of polycyclic aromatic hydrocarbons including benzo(a)pyrene (BP). The present study was designed to determine whether these

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