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Hong Jae Lee et al.
Journal of controlled release : official journal of the Controlled Release Society, 170(2), 198-208 (2013-06-04)
We report on a novel surface functionalization approach to equip the titanium (Ti) surfaces with osteogenic properties. A key feature of the approach is the treatment of the Ti surfaces with Ti-adhesive nanoparticles that can stably load and controllably release
Deep Chatterjee et al.
The Journal of biological chemistry, 290(26), 16415-16430 (2015-05-17)
Low levels of reactive oxygen species (ROS) act as important signaling molecules, but in excess they can damage biomolecules. ROS regulation is therefore of key importance. Several polyphenols in general and flavonoids in particular have the potential to generate hydroxyl
Johannes Goll et al.
Journal of chromatography. A, 1406, 129-135 (2015-06-25)
Two twin-cell centrifugal partition chromatographic columns (SCPC 250 and SCPE-250-BIO, Armen Instrument, France) with the same column volume but different cell size and number were compared in terms of stationary phase retention and column efficiency. The columns were tested with
Alessio Innocenti et al.
Bioorganic & medicinal chemistry letters, 18(12), 3593-3596 (2008-05-27)
Inhibition of the newest isoform of the metalloenzyme carbonic anhydrase (CA, EC 4.2.1.1), CA XV, with a series of phenols was investigated. Murine CA XV showed an inhibition profile by phenols distinct of those of the cytosolic human isoforms CA
S G Carmella et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 20(5), 587-590 (1982-10-01)
A method was developed for the quantitative analysis of catechol and 4-methylcatechol in human urine. [U-14C]Catechol was used as in internal standard. Urine was treated with beta-glucuronidase and sulphatase, acidified and extracted with ether. The ether extract was silylated and
Muhammed Alzweiri et al.
Journal of enzyme inhibition and medicinal chemistry, 30(3), 420-429 (2014-07-30)
An HPLC-size exclusion method was developed as an assay method to evaluate the binding of tested compounds with carbonic anhydrase III (CAIII) enzyme. Inhibition of CAIII by a group of benzoic acid analogues was characterized by vacancy (negative) peak intensity
Jennifer A Jacobsen et al.
Journal of medicinal chemistry, 54(2), 591-602 (2010-12-30)
Fragment-based lead design (FBLD) has been used to identify new metal-binding groups for metalloenzyme inhibitors. When screened at 1 mM, a chelator fragment library (CFL-1.1) of 96 compounds produced hit rates ranging from 29% to 43% for five matrix metalloproteases
Anisha N Patel et al.
Journal of the American Chemical Society, 134(50), 20246-20249 (2012-12-06)
Graphite-based electrodes (graphite, graphene, and nanotubes) are used widely in electrochemistry, and there is a long-standing view that graphite step edges are needed to catalyze many reactions, with the basal surface considered to be inert. In the present work, this
Daniela Brondani et al.
Biosensors & bioelectronics, 42, 242-247 (2012-12-05)
This paper describes the synthesis and characterization of PEI-coated gold nanoparticles (PEI-AuNP), which were applied as a new platform in the immobilization of laccase (LAC) originating from Aspergillus oryzae. This material (PEI-AuNP-LAC) was used in the construction of a biosensor
Jun Shan et al.
Chemosphere, 107, 109-114 (2014-05-31)
Both biochar and earthworms can exert influence on behaviors of soil-borne monomeric phenols in soil; however, little was known about the combined effects of biochar and earthworm activities on fate of these chemicals in soil. Using (14)C-catechol as a representative
Tamim Mosaiab et al.
Materials science & engineering. C, Materials for biological applications, 33(7), 3786-3794 (2013-08-06)
This paper introduces a facile method to make highly stable and recyclable antimicrobial magnetic nanoparticles (NPs). Initially, magnetic iron oxide nanoparticles (IONPs) were coated with poly (vinyl pyrrolidone) conjugated catechol (PVP-CCDP). Afterward, silver nanoparticles (Ag(0)) were deposited onto PVP-CCDP coated
E L Cavalieri et al.
Cellular and molecular life sciences : CMLS, 59(4), 665-681 (2002-05-23)
Exposure to estrogens is a risk factor for breast and other human cancers. Initiation of breast, prostate and other cancers has been hypothesized to result from reaction of specific estrogen metabolites, catechol estrogen-3,4-quinones, with DNA to form depurinating adducts at
M V Relling et al.
Molecular pharmacology, 45(2), 352-358 (1994-02-01)
We previously demonstrated that O-demethylation of the pendant dimethoxyphenol ring of epipodophyllotoxins to produce their respective catechol metabolites is catalyzed by cytochrome(s) P450 in human liver microsomes. Our objective was to identify the specific human cytochrome(s) P450 responsible for catechol
Lorenzo Pesci et al.
The FEBS journal, 282(7), 1334-1345 (2015-02-06)
Microbial decarboxylases, which catalyse the reversible regioselective ortho-carboxylation of phenolic derivatives in anaerobic detoxification pathways, have been studied for their reverse carboxylation activities on electron-rich aromatic substrates. Ortho-hydroxybenzoic acids are important building blocks in the chemical and pharmaceutical industries and
Luciana Mosca et al.
Neurochemistry international, 49(3), 262-269 (2006-03-22)
In recent years a catechol-thioether metabolite of dopamine, 5-S-cysteinyl-dopamine, has been identified in certain dopaminergic regions of the brain, notably the Substantia Nigra. 5-S-Cysteinyl-dopamine has received great attention in view of its possible significance as an index of oxidative stress
Yuhui Cheng et al.
Fish & shellfish immunology, 47(1), 117-121 (2015-09-01)
Three proteins with PO-like activities in the coelomocytes of sea urchin Strongylocentrotus nudus were identified using electrophoretic method and named as SnPO1, SnPO2 and SnPO3 according to their molecular mass from high to low. The SnPOs were characterized for substrate
Thi Dieu Huyen Nguyen et al.
Bioresource technology, 170, 196-203 (2014-08-20)
The catalytic conversion of suspended LignoBoost Kraft lignin was performed in near-critical water using ZrO2/K2CO3 as the catalytic system and phenol as the co-solvent and char suppressing agent. The reaction temperature was varied from 290 to 370°C and its effect
Cui Xu et al.
The journal of physical chemistry. A, 117(11), 2358-2364 (2013-02-27)
The gas-phase oxidation mechanism of phenol initiated by OH radical was investigated using DFT and ab initio calculations. The initiation of the reaction is dominated by OH addition to ortho-position, forming P2, which subsequently combines with O2 at the ipso-position
A V Ivanova et al.
Critical reviews in analytical chemistry, 45(4), 311-322 (2015-04-02)
The increasing interest in the study of the antioxidant activity of different objects is caused by an unbalance between the formation of reactive oxygen species (ROS) and the performance of the antioxidant system in humans under certain conditions, which leads
Myung-Hyun Ryou et al.
Advanced materials (Deerfield Beach, Fla.), 25(11), 1571-1576 (2013-01-03)
Conjugation of mussel-inspired catechol groups to various polymer backbones results in materials suitable as silicon anode binders. The unique wetness-resistant adhesion provided by the catechol groups allows the silicon nanoparticle electrodes to maintain their structure throughout the repeated volume expansion
Thierry Franck et al.
Chemico-biological interactions, 206(2), 194-203 (2013-09-26)
We investigated the antioxidant activities of some phenolic acid derivatives on a cell free system and on cellular and enzymatic models involved in inflammation. The stoichiometric antioxidant activities of phenolic acid derivatives were studied by measuring their capacity to scavenge
Catechol-functionalized adhesive nanoparticles as a surface-releasing system.
Kinam Park
Journal of controlled release : official journal of the Controlled Release Society, 170(2), 306-306 (2013-07-17)
Y-A Bae et al.
Parasitology, 142(6), 807-815 (2015-01-27)
Trematode tyrosinases (TYRs) play a major role in the tanning process during eggshell formation. We investigated the molecular and biochemical features of Paragonimus westermani TYR (PwTYR). The PwTYR cDNA was composed of 1568-bp encompassing a 1422-bp-long open reading frame (474-amino
Nanting Ni et al.
Bioorganic & medicinal chemistry letters, 18(5), 1567-1572 (2008-02-12)
Bacteria can coordinate community-wide behaviors through quorum sensing, that is, the secretion and sensing of autoinducer (AI) molecules. Bacterial quorum sensing is implicated in the regulation of pathologically relevant events such as biofilm formation, bacterial virulence, and drug resistance. Inhibitors
E Roemer et al.
Regulatory toxicology and pharmacology : RTP, 70 Suppl 1, S2-14 (2014-12-17)
This publication introduces a series of six other publications describing the toxicological assessment of kretek cigarettes, i.e., cigarettes characterized primarily by the use of a significant amount of cloves as an ingredient added to the tobacco. This paper presents background
En Han et al.
Analytical biochemistry, 486, 102-106 (2015-07-15)
A sensitive and simple amperometric biosensor for phenols was developed based on the immobilization of tyrosinase into CdS quantum dots/chitosan nanocomposite matrix. The nanocomposite film with porous nanostructure, excellent hydrophilicity and biocompatibility resulted in high enzyme loading, and the tyrosinase
Cuicui Sha et al.
Journal of separation science, 38(13), 2357-2362 (2015-04-22)
We developed a method for the direct identification of dopamine in single cultured rat pheochromocytoma cells by capillary electrophoresis using an end-channel carbon fiber nanoelectrode amperometric detector. The operation mode was designed to achieve single-cell injection and lysis in microfluidic
Jee-Heon Jeong et al.
Biochemical and biophysical research communications, 433(4), 513-518 (2013-03-26)
To investigate the inhibition effects of pancreatic islet transplantation on the progression of obese type 2 diabetes, we analyzed the effects of surface camouflaged islet transplantation on delaying the disease progression in a db/db diabetic mouse model. Surface camouflaged islets
Abhishek Chauhan et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 1001, 66-74 (2015-08-11)
In the present communication, uniformly sized molecularly imprinted polymer (MIP) as nanospheres were synthesized based on precipitation polymerization using dual-template imprinting approach and used it as sorbent for solid phase extraction of six urinary benzene metabolites (UBMs). This approach in
Alessio Innocenti et al.
Bioorganic & medicinal chemistry, 18(6), 2159-2164 (2010-02-27)
A series of phenolic acids and phenol natural products, such as p-hydroxybenzoic acid, p-coumaric acid, caffeic acid, ferulic acid, gallic acid, syringic acid, quercetin, and ellagic acid, were investigated for their inhibitory effects against the metalloenzyme carbonic anhydrase (CA, EC
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