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R Shukla et al.
The International journal of neuroscience, 116(12), 1391-1402 (2006-12-06)
Evidence from clinical and experimental studies supports the hypothesis of free radical-mediated damage of dopaminergic neurons in the pathology of Parkin's disease (PD). The present study was undertaken to evaluate the role of nitric oxide and oxidative stress in PD....
S Ghosh et al.
Biological trace element research, 35(3), 247-271 (1992-12-01)
The action of Zirconium (Zr) on biological systems presents an enigma. It is ubiquitous, being present in nature in amounts higher than most trace elements. It is taken up by plants from soil and water and accumulated in certain tissues....
Piyanut Charoonsuk et al.
Journal of nanoscience and nanotechnology, 13(5), 3529-3534 (2013-07-19)
The chemical reaction and phase evolution of perovskite lead zirconate (PbZrO3; PZ) nanoparticles, synthesized by the sono-assisted co-precipitation method, have been investigated. The nanopowders were characterized using the X-ray diffraction technique (XRD), Fourier transform infrared (FT-IR) spectroscopy, Raman spectroscopy, transmission...
Gopalu Karunakaran et al.
Journal of nanoscience and nanotechnology, 13(1), 678-685 (2013-05-08)
Currently, nanometal oxides are used extensively in different industries such as medicine, cosmetics and food. The increased consumption of nanoparticles (NPs) leads the necessity to understand the fate of the nanoparticles in the environment. The present study focused on the...
C H Huang et al.
Materials science & engineering. C, Materials for biological applications, 33(7), 4183-4187 (2013-08-06)
The bio-electrochemical response in simulated body fluid of the Zr53Cu30Ni9Al8 metallic glasses with different degrees of partial crystallization was systematically examined and discussed. Through thermal annealing, the volume fractions of the crystalline phases are determined to be 0, 34, 63...
Muhammad Shahid et al.
Reviews of environmental contamination and toxicology, 221, 107-127 (2012-10-24)
Zirconium (Zr) is a transition metal that has both stable and radioactive isotopes.This metal has gained significant attention as a major pollutant of concern, partly because it has been prominent in the debate concerning the growing anthropogenic pressure on the...
Wen Zhang et al.
The Analyst, 129(3), 229-234 (2004-02-24)
The fabrication and application of a novel electrochemical detector (ED) with nano crystalline Ce-doped lead dioxide film chemically modified electrode (CME) for liquid chromatography (LC) were described. The Ce-doped PbO(2) film was characterized by X-ray diffractometer (XRD) and scanning tunnel...
Dino Re et al.
The international journal of esthetic dentistry, 9(3), 426-435 (2014-08-16)
Marginal fit is valued as one of the most important criteria for the clinical quality and success of all-ceramic crowns. The aim of this in vitro study was to investigate the marginal fit of Lava Zirconia crown-copings on chamfer and...
D A Loeffler et al.
Journal of neural transmission. Parkinson's disease and dementia section, 9(1), 45-53 (1995-01-01)
Though depletion of CSF homovanillic acid (HVA) concentration has often been regarded as a direct indicator of dopamine (DA) deficiency in Parkinson's Disease (PD), CSF HVA is normal in mildly affected patients. To explore why, we measured DA and its...
Daryoush Afzali et al.
Environmental monitoring and assessment, 186(6), 3523-3529 (2014-02-04)
In this study, a ternary Zr(IV) system with 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol (5-Br-PADAP) and fluoride was chosen on the basis of dispersive liquid-liquid microextraction method. Zirconium was extracted into the fine droplets of dichlorobenzene as extracting solvent. These drops dispersed as a cloud...
Stefan Vandeweghe et al.
The International journal of prosthodontics, 26(5), 458-464 (2013-09-03)
The aim of this study was to evaluate and compare the outcomes of immediately loaded all-ceramic crown restorations supported by implants placed in both mature bone and immediate extraction sockets. Forty-three tapered, external hex implants were placed immediately after extraction...
The formation of 3-hydroxy-4-methoxyphenylalanine and 3-hydroxy-4-methoxyphenethylamine in plasma during L-DOPA therapy in patients with Parkinson's disease.
T Ishimitsu et al.
Chemical & pharmaceutical bulletin, 32(8), 3320-3322 (1984-08-01)
K M Regish et al.
The European journal of prosthodontics and restorative dentistry, 21(1), 44-48 (2013-05-21)
This study compares the internal fit and marginal adaptation of copy milled Zirconia copings with Nickel-Chromium (Ni-Cr) copings fabricated using a lost wax technique before and after ceramic veneering. A standardized metal master die simulating a prepared crown was fabricated...
I Denry et al.
Journal of dental research, 93(12), 1235-1242 (2014-10-03)
Our goal is to give an overview of a selection of emerging ceramics and issues for dental or biomedical applications, with emphasis on specific challenges associated with full-contour zirconia ceramics, and a brief synopsis on new machinable glass-ceramics and ceramic-based...
Paolo Baldissara et al.
The journal of adhesive dentistry, 15(3), 259-267 (2013-05-09)
To compare the shear bond strengths (SBS) of two cements to two Y-TZP ceramics subjected to different surface treatments. Zirconia specimens were made from Lava (n = 36) and IPS e.max ZirCAD (n = 36), and their surfaces were treated...
Chanisa Nawanil et al.
Journal of nanoscience and nanotechnology, 13(5), 3700-3704 (2013-07-19)
This study synthesized blended lead zirconate (PbZrO3;PZ)/poly(ethylene oxide)(PEO)/Glutinous rice starch (GRS) nanofibers by the electrospinning method. A number of parameters such as the ratio between PEO and GRS and calcination temperature have been studied. The as-spun PZ/PEO/GRS composite and PZ...
Boxiong Shen et al.
Journal of environmental sciences (China), 25(4), 791-800 (2013-08-09)
Ce-ZrO2 is a widely used three-way catalyst support. Because of the large surface area and excellent redox quality, Ce-ZrO2 may have potential application in selective catalytic reduction (SCR) systems. In the present work, Ce-ZrO2 was introduced into a low-temperature SCR...
A 21-year-old patient with a HER2-positive colorectal cancer.
Frederike Bensch et al.
Gastroenterology, 148(1), 20-21 (2014-12-03)
Soo Min Hwang et al.
Journal of nanoscience and nanotechnology, 13(11), 7774-7778 (2013-11-20)
We fabricated InSnZnO (ITZO) thin-film transistors (TFTs) with a high-permittivity (K) ZrO2 gate insulator using a solution process and explored the microstructure and electrical properties. ZrO2 and ITZO (In:Sn:Zn = 2:1:1) precursor solutions were deposited using consecutive spin-coating and drying...
Giovanni Forte et al.
Annali dell'Istituto superiore di sanita, 41(2), 189-195 (2005-10-26)
Twenty-six metals and the oxidative status in 71 patients affected by Parkinson's disease and 44 healthy individuals were compared in order to identify potential biomarkers of the disease. In the patients, the following significant imbalances were found (p < or...
M Sasse et al.
International journal of computerized dentistry, 16(2), 109-118 (2013-08-13)
This study evaluated the clinical outcome of CAD/CAM zirconia-ceramic resin-bonded fixed dental prostheses (RBFDPs) with a cantilevered single-retainer design. Thirty anterior zirconia-ceramic RBFDPs fabricated with the Cerec CAD/CAM system were inserted using either a phosphate monomer containing resin (Panavia 21...
Johannes Levin et al.
Dementia and geriatric cognitive disorders, 29(6), 553-559 (2010-07-08)
Increasing evidence suggests that elevated levels of homocysteine (Hcy) and methylmalonate (MMA) may be involved in the pathogenesis of neurodegenerative diseases. The urine levels of MMA and serum levels of Hcy as well as folic acid and vitamin B(12) were...
Y Kotake et al.
Journal of neurochemistry, 65(6), 2633-2638 (1995-12-01)
1-Benzyl-1,2,3,4-tetrahydroisoquinoline (1BnTIQ) was detected as a novel endogenous amine in mouse brain and parkinsonian CSF by using the gas chromatography-selected ion-monitoring method. The level of 1BnTIQ was very high in CSF of some parkinsonian patients compared with that of controls...
A Moser et al.
Journal of the neurological sciences, 131(2), 183-189 (1995-08-01)
We could identify the MPTP-like compound and isoquinoline derivative N-methyl-norsalsolinol (2-MDTIQ) in cerebrospinal fluid (CSF) of patients with Parkinson's disease. The presence of 2-MDTIQ negatively correlated with the disease duration. In order to study the relationship between presence of 2-MDTIQ...
József Környei et al.
Magyar onkologia, 58(4), 245-250 (2014-12-18)
18F-fluoro-deoxyglucose (FDG) can be considered as the "work-horse" of PET/CT and PET/MR imaging modalities. FDG provides insight in the pathophysiology of tumors and metastases from the point of view of sugar consumption. On the other hand, amino acid metabolism, expression...
E J Pappert et al.
Neurology, 47(4), 1037-1042 (1996-10-01)
To determine if ventricular cerebrospinal fluid (vCSF) alpha-tocopherol levels in Parkinson's disease (PD) patients can be increased by oral alpha-tocopherol supplementation and whether vCSF levels are linearly related to plasma alpha-tocopherol levels. In spite of its putative neuroprotective properties, alpha-tocopherol...
Oluwatayo F Ikotun et al.
Future medicinal chemistry, 3(5), 599-621 (2011-04-30)
Positron emission tomography, with its high sensitivity and resolution, is growing rapidly as an imaging technology for the diagnosis of many disease states. The success of this modality is reliant on instrumentation and the development of effective and novel targeted...
José Zorzin et al.
The journal of adhesive dentistry, 16(6), 541-546 (2014-12-18)
To evaluate the bonding performance of self-adhesive resin cements to zirconia and lithium disilicate in self- and dual-curing modes before and after thermocycling. Rectangular bars (3 mm high, 3 mm wide, 9 mm long) were manufactured from zirconia (Vita In-Ceram...
Ajoy Kumar Pandey et al.
Materials science & engineering. C, Materials for biological applications, 33(7), 3923-3930 (2013-08-06)
Developed ceria/yttria stabilized zirconia and ceria/yttria stabilized zirconia toughened alumina supported formation of apatite layer when immersed in simulated body fluid without any prior surface treatment. The formed mineral layer was confirmed as hydroxyapatite through X-ray diffraction patterns. The calcium/phosphate...
Blair Schoene et al.
Science (New York, N.Y.), 347(6218), 182-184 (2014-12-17)
The Chicxulub asteroid impact (Mexico) and the eruption of the massive Deccan volcanic province (India) are two proposed causes of the end-Cretaceous mass extinction, which includes the demise of nonavian dinosaurs. Despite widespread acceptance of the impact hypothesis, the lack...