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Joe Boison
Bioanalysis, 4(16), 2067-2083 (2012-09-06)
In the late 1970s, concerns were raised regarding why antithyroid drugs were being administered to food animals to promote growth despite the fact that they had been implicated as being carcinogenic and teratogenic; the growth promotion process produced an inferior
Hwa-Jung Choi et al.
Experimental parasitology, 143, 24-29 (2014-05-17)
Since pyrimethamine, the general therapeutic drug for toxoplasmosis, presents several adverse side effects, the need to develop and evaluate new drugs for the condition is critical. In this study, anti-Toxoplasma gondii activities of 3-[{2-((E)-furan-2-ylmethylene)hydrazinyl}methylene]-1,3-dihydroindol-2-one (ATT-5126) and 6-trifluoromethyl-2-thiouracil (KH-0562) were evaluated
Marilyn J Schneider et al.
Analytical and bioanalytical chemistry, 407(15), 4423-4435 (2014-12-30)
Multiclass, multiresidue methods are becoming increasingly popular in regulatory monitoring programs due to their increased analytical scope and laboratory efficiency. In this work, we report the development and validation of a new high-throughput analytical method to monitor up to 131
Naomi L Kruhlak et al.
Toxicology mechanisms and methods, 18(2-3), 217-227 (2008-01-01)
ABSTRACT Drug-induced phospholipidosis (PL) is a condition characterized by the accumulation of phospholipids and drug in lysosomes, and is found in a variety of tissue types. PL is frequently manifested in preclinical studies and may delay or prevent the development
Wilhelm Maximilian Hützler et al.
Acta crystallographica. Section C, Crystal structure communications, 69(Pt 1), 93-100 (2013-01-04)
In order to study the preferred hydrogen-bonding pattern of 6-amino-2-thiouracil, C(4)H(5)N(3)OS, (I), crystallization experiments yielded five different pseudopolymorphs of (I), namely the dimethylformamide disolvate, C(4)H(5)N(3)OS·2C(3)H(7)NO, (Ia), the dimethylacetamide monosolvate, C(4)H(5)N(3)OS·C(4)H(9)NO, (Ib), the dimethylacetamide sesquisolvate, C(4)H(5)N(3)OS·1.5C(4)H(9)NO, (Ic), and two different 1-methylpyrrolidin-2-one
Sarah E Munchel et al.
Molecular biology of the cell, 22(15), 2787-2795 (2011-06-18)
RNA levels are determined by the rates of both transcription and decay, and a mechanistic understanding of the complex networks regulating gene expression requires methods that allow dynamic measurements of transcription and decay in living cells with minimal perturbation. Here
Khlood Saad Abou-Melha
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 97, 6-16 (2012-06-30)
A synthesis of new thiouracil derivative was carried out and deliberately investigated. A new series of complexes was prepared using Ni(II), Pd(II), Pt(IV), Cu(II) and UO(2)(+2) ions. IR spectral data proposed the coordination mod of the ligand towards each metal
Sha Huang et al.
Bioorganic & medicinal chemistry letters, 21(21), 6341-6342 (2011-09-23)
The structures of the uracil and thiouracils were examined using NMR spectroscopy and crystal structure data when available. The relationships between the extent of polarization and the C5-C6 bond length as well as the H5-H6 coupling constants were probed. It
O Dolgounitcheva et al.
The Journal of chemical physics, 134(7), 074305-074305 (2011-02-24)
Electron affinities, vertical electron detachment energies, and isomerization energies of 4-thiouracil, 2-thiouracil, and 2,4-dithiouracil and their valence anions have been calculated with ab initio electron propagator and other many-body methods. Anions in which protons have been transferred to the C5
A Palumbo et al.
FEBS letters, 485(2-3), 109-112 (2000-11-30)
2-thiouracil (TU), an established antithyroid drug and melanoma-seeker, was found to selectively inhibit neuronal nitric oxide synthase (nNOS) in a competitive manner (K(i)=20 microM), being inactive on the other NOS isoforms. The drug apparently interfered with the substrate- and tetrahydrobiopterin
H Shimizu et al.
The European journal of prosthodontics and restorative dentistry, 18(4), 185-188 (2011-01-27)
The bond strengths of a silver-tin-zinc-indium alloy used with adhesive luting cements were investigated. The metal surfaces were primed with two metal conditioners designed for noble metal alloys or base metal alloys, or prepared using a Rocatec tribochemical coating unit.
George D Geromichalos et al.
Anticancer research, 31(3), 831-842 (2011-04-19)
In order to reduce toxicity and to enhance anticancer activity of nitrogen mustards, three hybrid steroidal esters were synthesized and tested in vitro against human pancreatic cancer cells expressing uridine phosphorylase (UPase). The inhibition potency against a target protein implicated
J Vanden Bussche et al.
Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment, 28(2), 166-172 (2011-01-26)
Thiouracil belongs to the xenobiotic thyreostats, which are growth-promoting agents illegally used in animal production. Recently it has been reported that thiouracil is suspected to have a natural origin. The European Union of Reference Laboratory guidance paper of 2007 acknowledged
Erik M Lenarcic et al.
Journal of virology, 87(15), 8697-8712 (2013-06-07)
Eukaryotic RNA viruses are known to utilize host factors; however, the identity of these factors and their role in the virus life cycle remain largely undefined. Here, we report a method to identify proteins bound to the viral RNA during
Leslie Gay et al.
Genes & development, 27(1), 98-115 (2013-01-12)
Transcriptional profiling is a powerful approach for understanding development and disease. Current cell type-specific RNA purification methods have limitations, including cell dissociation trauma or inability to identify all RNA species. Here, we describe "mouse thiouracil (TU) tagging," a genetic and
Mamdouh S Masoud et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 99, 365-372 (2012-10-03)
Mononuclear copper complex [CuL(NH(3))(4)]Cl(2)·0.5H(2)O and three new hetero-metallic complexes: [Cu(2)Ni(L)(2)(NH(3))(2)Cl(2)·6H(2)O] 2H(2)O(,) [Cu(3)Co(L)(4)·8H2O]Cl·4(·)5H(2)O, and [Cu(4)Co(2)Ni(L)(3)(OH)(4)(NH(3))Cl(4)·3H(2)O]4H(2)O where L is 2-thiouracil, were prepared and characterized by elemental analyses, molar conductance, room-temperature magnetic susceptibility, spectral (IR, UV-Vis and ESR) studies and thermal analyses techniques
Hiroyuki Minami et al.
The Journal of prosthetic dentistry, 106(6), 378-385 (2011-12-03)
Although the effectiveness of primers for resin bonding to noble alloys has been demonstrated, no effective clinical technique for bonding to noble metal ceramic alloys has been established. The purpose of this study was to evaluate the effects of metal
Julie Vanden Bussche et al.
Journal of agricultural and food chemistry, 59(10), 5786-5792 (2011-04-21)
In recent years, questions have been raised on the possible semi-endogenous status of the alleged xenobiotic thyreostatic drug thiouracil; thiouracil has been detected in the urine of various animals (livestock and domesticated) at concentrations between 1 and 10 μg L(-1)
Miyuki Yamashita et al.
Acta odontologica Scandinavica, 71(1), 196-204 (2012-02-11)
The purpose of the current study was to evaluate the effect of thione-based metal priming agents on the adhesive behavior of a Ag-Pd-Cu-Au alloy and component metals bonded with an acrylic resin. Disk specimens (10 mm in diameter by 3
Taro Ozaki et al.
The Journal of biological chemistry, 288(14), 9946-9956 (2013-02-23)
The characterization of potential gene clusters is a promising strategy for the identification of novel natural products and the expansion of structural diversity. However, there are often difficulties in identifying potential metabolites because their biosynthetic genes are either silenced or
Henryk Wincel
Journal of the American Society for Mass Spectrometry, 25(12), 2134-2142 (2014-10-02)
Hydration reactions of protonated and sodiated thiouracils (2-thiouracil, 6-methyl-2-thiouracil, and 4-thiouracil) generated by electrospray ionization have been studied in a gas phase at 10 mbar using a pulsed ion-beam high-pressure mass spectrometer. The thermochemical data, ΔH(o)n, ΔS(o)n, and ΔG(o)n, for
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
Omar N Al Safarjalani et al.
Cancer chemotherapy and pharmacology, 69(6), 1449-1455 (2012-03-01)
The purpose of this investigation was to evaluate the effectiveness of oral 5-(phenylthio)acyclouridine (PTAU) in reducing 5-fluorouracil (FUra) host toxicity and enhancing its chemotherapeutic efficacy against human breast tumors. PTAU is a potent and specific inhibitor of uridine phosphorylase (UP
Mamdouh S Masoud et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 79(3), 538-547 (2011-05-03)
The solvatochromic responses of uric acid (Ua), 6-amino-2-thiouracil (ATU) and a series of their complexes dissolved in ten solvents of different polarity have been measured. The solvent-dependent UV/Vis spectroscopic absorption maxima, λ(max), are assigned to the corresponding electronic transitions and
Amanda Beddows et al.
Chemical communications (Cambridge, England), 48(71), 8895-8897 (2012-08-02)
Flap endonucleases (FENs) are proposed to select their target phosphate diester by unpairing the two terminal nucleotides of duplex. Interstrand disulfide crosslinks, introduced by oxidation of thiouracil and thioguanine bases, abolished the specificity of human FEN1 for hydrolysis one nucleotide
Radika Soysa et al.
The Journal of biological chemistry, 288(41), 29954-29964 (2013-08-30)
The pathogenic protozoan parasite Leishmania donovani is capable of both de novo pyrimidine biosynthesis and salvage of pyrimidines from the host milieu. Genetic analysis has authenticated L. donovani uracil phosphoribosyltransferase (LdUPRT), an enzyme not found in mammalian cells, as the
Raj Kumar Bera et al.
Chemical communications (Cambridge, England), 47(41), 11498-11500 (2011-09-22)
A nonenzymatic method for the selective detection and quantification of serum uric acid (UA) using 2-thiouracil (2-TU) tailored Au nanoparticles is developed. The H-bonding interaction of UA with functionalized Au nanoparticles brings instantaneous visible color change and paves the way
Grazyna Wenska et al.
Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology, 10(8), 1294-1302 (2011-05-20)
The absorption, phosphorescence and phosphorescence excitation spectra, phosphorescence quantum yields, and T(1) excited state lifetimes of four 4-thiouracil derivatives were measured for the first time in chemically inert and very weakly interacting perfluoro-1,3-dimethylcyclohexane at room temperature. The set of the
K P Prasanthkumar et al.
The journal of physical chemistry. A, 116(44), 10712-10720 (2012-10-16)
The reaction of hydroxyl radical ((•)OH) with the nucleic acid base analogue 2-thiouracil (1) has been studied by pulse radiolysis experiments and DFT. The generic intermediate radicals feasible for the (•)OH reactions with 1, namely, one electron oxidation product (1(•+))
Xiang Li et al.
The Journal of chemical physics, 134(7), 074304-074304 (2011-02-24)
We report the photoelectron spectra of the negative ions of 4-thiouracil (4-TU)(-) and 2,4-dithiouracil (2,4-DTU)(-). Both of these spectra are indicative of valence anions, and they are each dominated by a single broad band with vertical detachment energies of 1.05
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