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Humberto Terrones et al.
Scientific reports, 3, 1549-1549 (2013-03-27)
Although bulk hexagonal phases of layered semiconducting transition metal dichalcogenides (STMD) such as MoS2, WS2, WSe2 and MoSe2 exhibit indirect band gaps, a mono-layer of STMD possesses a direct band gap which could be used in the construction of novel...
Shigeyuki Kitamura et al.
Drug metabolism and pharmacokinetics, 21(2), 83-98 (2006-05-17)
Molybdenum hydroxylases, which include aldehyde oxidase and xanthine oxidoreductase, are involved in the metabolism of some medicines in humans. They exhibit oxidase activity towards various heterocyclic compounds and aldehydes. The liver cytosol of various mammals also exhibits a significant reductase...
Costanza Baldisserotto et al.
Plant physiology and biochemistry : PPB, 70, 387-395 (2013-07-09)
The aquatic plant Trapa natans L. is highly resistant to Mn and moderately resistant to Mo, mainly thanks to its ability to sequestrate the metals by chelation in the vacuole. Excess of Mn and Mo causes somewhat aspecific toxicity symptoms...
Luis M Rubio et al.
Annual review of microbiology, 62, 93-111 (2008-04-24)
The iron-molybdenum cofactor (FeMo-co), located at the active site of the molybdenum nitrogenase, is one of the most complex metal cofactors known to date. During the past several years, an intensive effort has been made to purify the proteins involved...
D G Barceloux
Journal of toxicology. Clinical toxicology, 37(2), 231-237 (1999-06-26)
Molybdenum does not exist naturally in the pure metallic form and of the 5 oxidation states (2-6) the predominant species are Mo(IV) and Mo(VI). Molybdenum rapidly polymerizes to a wide variety of complex polymolybdate compounds in solution. The vast majority...
Pulakesh Maity et al.
Organic letters, 15(24), 6246-6249 (2013-11-12)
α-Stannylated and α-iodinated enamides can easily be obtained by molybdenum-catalyzed regio- and stereoselective hydrostannation and subsequent tin-iodine exchange. These functionalized enamides are interesting building blocks for a wide range of cross-coupling reactions giving access to various types of α-substituted enamides.
Xi Wang et al.
Water science and technology : a journal of the International Association on Water Pollution Research, 67(12), 2845-2849 (2013-06-22)
A novel visible light-driven photocatalyst film, MoS₂/Ag/TiO₂, was synthesized on a glass-fiber membrane. The composite catalyst film had a multi-layer structure with Ag as nanoconjunctions between the MoS₂ and TiO₂ layers. The catalyst film performed well for both photocatalytic hydrogen...
Ya Yan et al.
Nanoscale, 5(17), 7768-7771 (2013-07-26)
In this work, a networked MoS2/CNT nanocomposite has been synthesized by a facile solvothermal method. The as-prepared sample exhibits high catalytic activity for electrocatalytic hydrogen evolution.
Lei Ling et al.
Journal of chromatography. A, 1309, 1-14 (2013-08-27)
Molybdenum-99 (Mo-99), generated from the fission of Uranium-235 (U-235), is the radioactive parent of the most widely used medical isotope, technetium-99m (Tc-99m). An efficient, robust, low-pressure process is developed for recovering Mo-99 from uranyl sulfate solutions. The minimum column volume...
G Toncev et al.
European journal of neurology, 9(3), 221-226 (2002-05-03)
Several findings suggest lower levels of serum uric acid in multiple sclerosis (MS) patients. The aim of this study is to investigate relationships of uric acid serum levels in relapse-remitting (RR) MS patients with clinical activity of disease and blood-brain...
M Jake Pushie et al.
Inorganic chemistry, 52(6), 2830-2837 (2013-03-01)
Molybdenum K-edge X-ray absorption spectroscopy (XAS) has been used to probe the structure of a Mo(V) species that has been suggested to be a catalytic intermediate in the reaction of dimethyl sulfoxide (DMSO) reductase with the alternative substrate trimethylamine N-oxide...
Stanley S Chou et al.
Journal of the American Chemical Society, 135(12), 4584-4587 (2013-03-12)
MoS2 is a two-dimensional material that is gaining prominence due to its unique electronic and chemical properties. Here, we demonstrate ligand conjugation of chemically exfoliated MoS2 using thiol chemistry. With this method, we modulate the ζ-potential and colloidal stability of...
Samar Al Sayegh Petkovšek et al.
Environmental monitoring and assessment, 186(7), 4261-4274 (2014-03-13)
The transfer of lead, cadmium, zinc, mercury, copper and molybdenum from soil to the tissues of small mammals inhabiting differently polluted areas in Slovenia was investigated. Metals were determined in soil samples and in the livers of 139 individuals of...
Jian-Ming Lü et al.
Biochemical pharmacology, 86(9), 1328-1337 (2013-09-03)
Hyperuricemia, excess of uric acid in the blood, is a clinical problem that causes gout and is also considered a risk factor for cardiovascular disease. The enzyme xanthine oxidase (XO) produces uric acid during the purine metabolism; therefore, discovering novel...
Goran Gajski et al.
Biochimica et biophysica acta, 1840(1), 565-576 (2013-10-22)
The main objective of the present study was to investigate chemical composition and possible cyto/genotoxic potential of several medical implant materials commonly used in total hip joint replacement. Medical implant metal alloy (Ti6Al4V and CoCrMo) and high density polyethylene particles...
Fengyan Li et al.
Dalton transactions (Cambridge, England : 2003), 42(34), 12079-12082 (2013-07-19)
The first 3D pure inorganic framework based on heteropolymolybdate anion [V2Mo16O58](10-) has been synthesized and its photoelectric properties demonstrated.
Maria Lyra et al.
Hellenic journal of nuclear medicine, 14(1), 49-55 (2011-04-23)
The sleeping giant of molybdenum-99 ((99)Mo) production is grinding to a halt and the world is wondering how this happened. Fewer than 10 reactors in the world are capable of producing radio nuclides for medicine; approximately 50% of the world's...
Giovanni Forte et al.
Annali dell'Istituto superiore di sanita, 41(2), 213-216 (2005-10-26)
Although some studies suggested a link between exposure to trace elements and development of multiple sclerosis (MS), clear information on their role in the aetiology of MS is still lacking. In this study the concentrations of Al, Ba, Be, Bi...
V Calabrese et al.
Neurochemical research, 28(9), 1321-1328 (2003-08-27)
Recent studies suggest that NO and its reactive derivative peroxynitrite are implicated in the pathogenesis of multiple sclerosis (MS). Patients dying with MS demonstrate increased astrocytic inducible nitric oxide synthase activity, as well as increased levels of iNOS mRNA. Peroxynitrite...
K J Bär et al.
Neurobiology of aging, 24(2), 333-338 (2002-12-25)
Increasing evidence suggests an interaction of oxidative stress and the formation of advanced glycation end products (AGE) in the onset and progression of Alzheimer's disease. We studied levels of pentosidine and N(epsilon)-(carboxymethyl)-lysine (CML) in serum and cerebrospinal fluid (CSF) of...
M Naoi et al.
Mechanisms of ageing and development, 111(2-3), 175-188 (2000-02-03)
Dopamine neurons in the substantia nigra of human brain are selectively vulnerable and the number decline by aging at 5-10% per decade. Enzymatic and non-enzymatic oxidation of dopamine generates reactive oxygen species, which induces apoptotic cell death in dopamine neurons....
Marie-Christine Hoffmann et al.
Journal of bacteriology, 196(3), 633-640 (2013-11-26)
Rhodobacter capsulatus is able to grow with N2 as the sole nitrogen source using either a molybdenum-dependent or a molybdenum-free iron-only nitrogenase whose expression is strictly inhibited by ammonium. Disruption of the fdxD gene, which is located directly upstream of...
Beatrice Bocca et al.
Annali dell'Istituto superiore di sanita, 41(2), 197-203 (2005-10-26)
The haematic concentration of 26 metals and the oxidative damage in 60 patients (20 males and 40 females) affected by Alzheimer's disease and 44 healthy individuals (33 males and 11 females) were compared. In patients, the following significant (p <...
Mohammad-Reza Rashidi et al.
Expert opinion on drug metabolism & toxicology, 6(2), 133-152 (2010-01-26)
Molybdenum hydroxylases, aldehyde oxidase and xanthine oxidase, are metalloflavoproteins that catalyze both oxidation and reduction of a broad range of drugs and other xenobiotics indicating the importance of these enzymes in drug oxidation, detoxification and activation. Both enzymes are also...
Russ Hille
Archives of biochemistry and biophysics, 433(1), 107-116 (2004-12-08)
Unlike monooxygenases, molybdenum-containing hydroxylases catalyze the hydroxylation of carbon centers using oxygen derived ultimately from water, rather than O(2), as the source of the oxygen atom incorporated into the product, and do not require an external source of reducing equivalents....
Jean L Johnson
Prenatal diagnosis, 23(1), 6-8 (2003-01-21)
Molybdenum cofactor deficiency and isolated sulfite oxidase deficiency are autosomal recessive inborn errors of metabolism with severe neurological symptoms resulting from a lack of sulfite oxidase activity. The deficiencies can be diagnosed prenatally by monitoring sulfite oxidase activity in chorionic...
Rupert Purchase
Science progress, 96(Pt 1), 19-32 (2013-06-07)
Wilson's disease is a rare autosomal recessive disease characterised by the deposition of copper in the brain, liver; cornea, and other organs. The overload of copper inevitably leads to progressive liver and neurological dysfunction. Copper overload in patients with Wilson's...
John H Enemark et al.
Dalton transactions (Cambridge, England : 2003), (29)(29), 3501-3514 (2006-07-21)
Sulfite oxidizing enzymes (SOEs) are physiologically vital and occur in all forms of life. During the catalytic cycle the five-coordinate square-pyramidal oxo-molybdenum active site passes through the Mo(v) state, and intimate details of the structure can be obtained from pulsed...
Krystyna Pyrzynska
Analytica chimica acta, 590(1), 40-48 (2007-04-10)
Determination of molybdenum in different kinds of environmental samples is often a challenging task for analysts. Its concentration is usually very low and the sample matrix may cause serious interferences during measurement. Therefore, preconcentration and separation methods should be used...
Sabine Goldberg
Environmental toxicology and chemistry, 33(10), 2172-2180 (2014-03-13)
Various chemical models of ion adsorption are presented and discussed. Chemical models, such as surface complexation models, provide a molecular description of anion adsorption reactions using an equilibrium approach. Two such models, the constant capacitance model and the triple layer...
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