keyword
MENU ▼
Read by QxMD icon Read
search

Fluoride

keyword
https://www.readbyqxmd.com/read/29778807/-18-f-fluoride-pet-ct-and-99m-tc-mdp-spect-ct-can-detect-bone-cancer-at-early-stage-in-rodents
#1
Christiano R R Alves, Daniele de P Faria, Camila de G Carneiro, Alexandre T Garcez, Vanessa P Gutierrez, Willian das Neves, Ney R de Almeida, Yara Cury, Roger Chammas, Patricia C Brum
Noninvasive imaging using positron emission tomography/computed tomography (PET/CT) and single photon emission computed tomography/computed tomography (SPECT/CT) are considered revolutionized approaches to detect bone cancer. Both PET/CT and SPECT/CT technologies have advanced to permit miniaturization, which has provided the advantage of including animals as their own controls in longitudinal studies. The present study was designed to evaluate the potential of PET/CT and SPECT/CT as research tools to detect bone cancer in rats...
May 17, 2018: Life Sciences
https://www.readbyqxmd.com/read/29778163/impacts-of-sodium-hydroxide-and-sodium-hypochlorite-aging-on-polyvinylidene-fluoride-membranes-fabricated-with-different-methods
#2
Qilong Wu, Xihui Zhang, Guodong Cao
This study compared the effects of chemical aging on the polyvinylidene fluoride (PVDF) membranes fabricated with the methods of non-solvent induced phase separation (NIPS) (named NIPS-PVDF) and thermally induced phase separation (TIPS) (named TIPS-PVDF). The chemical solutions of sodium hypochlorite (NaClO) and sodium hydroxide (NaOH) were chosen at the concentration of 5000mg/L. The equivalence of 5 and 10years was respectively selected as the time of aging. The physicochemical evolutions of membrane aging are characterized on the base of morphology analysis, chemical components, permeation ability and mechanical properties...
May 2018: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/29777723/effect-of-acetylcholinesterase-inhibitors-donepezil-and-rivastigmine-on-the-activity-and-expression-of-cyclooxygenases-in-a-model-of-the-inflammatory-action-of-fluoride-on-macrophages-obtained-from-thp-1-monocytes
#3
Marta Goschorska, Irena Baranowska-Bosiacka, Izabela Gutowska, Maciej Tarnowski, Katarzyna Piotrowska, Emilia Metryka, Krzysztof Safranow, Dariusz Chlubek
Inflammation is an important factor in the development of many diseases of the central nervous system, including Alzheimer's disease and other types of dementia. ‪Given that acetylcholinesterase inhibitors are also currently believed to have anti-inflammatory properties, the purpose of this study was to investigate the effect of acetylcholinesterase inhibitors (rivastigmine, donepezil) on cyclooxygenase activity and expression using the proinflammatory action of fluoride (F- ) on cultured macrophages obtained from THP-1 monocytes...
May 16, 2018: Toxicology
https://www.readbyqxmd.com/read/29775706/purification-and-characterization-of-an-organic-solvent-tolerant-and-detergent-stable-lipase-from-haloferax-mediterranei-cncmm-50101
#4
Siham Akmoussi-Toumi, Souad Khemili-Talbi, Imen Ferioune, Salima Kebbouche-Gana
The present study investigates the purification and biochemical characterization of an extracellular lipase (HML) from Haloarchaea Haloferax mediterranei strain ATS1, isolated from the Sebkha (Medea, Algeria). The pure protein was obtained with ammonium sulfate precipitation (40-70%)-dialysis and UNO Q-6 FPLC, and characterized biochemically. Matrix assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF/MS) analysis revealed that the purified enzyme was a monomer, with a molecular mass of 45,011...
May 15, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29771936/assigning-crystallographic-electron-densities-with-free-energy-calculations-the-case-of-the-fluoride-channel-fluc
#5
Igor Ariz-Extreme, Jochen S Hub
Approximately 90% of the structures in the Protein Data Bank (PDB) were obtained by X-ray crystallography or electron microscopy. Whereas the overall quality of structure is considered high, thanks to a wide range of tools for structure validation, uncertainties may arise from density maps of small molecules, such as organic ligands, ions or water, which are non-covalently bound to the biomolecules. Even with some experience and chemical intuition, the assignment of such disconnected electron densities is often far from obvious...
2018: PloS One
https://www.readbyqxmd.com/read/29770951/requirement-of-tgf%C3%AE-signaling-for-effect-of-fluoride-on-osteoblastic-differentiation
#6
Jingmin Zhang, Ningning Jiang, Haolan Yu, Xiuhua Yu, Fengyang Guo, Zhitao Zhao, Hui Xu
Research focused on transforming growth factor β (TGFβ) signaling in osteoblast is gradually increasing, whereas literature is rare in terms of fluorosis. This work aimed to investigate how TGFβ signaling participated in regulation of the osteoblast by different doses of fluoride treatment. Bone marrow stem cells (BMSCs) were developed into osteoblastic cells and exposed to 1, 4, and 16 mg/L F- with and without 10 ng/mL of TGFβ. Cell viability and differentiation state of osteoblast under different settings were measured by means of cell counting kit and analysis of alkaline phosphatase (ALP) activity as well as formation of mineral nodules...
May 16, 2018: Biological Trace Element Research
https://www.readbyqxmd.com/read/29770372/rh-catalyzed-c-h-bond-alkylation-of-indoles-with-%C3%AE-%C3%AE-difluorovinyl-tosylate-via-indolyl-group-migration
#7
Lu Zhou, Chuan Zhu, Teck-Peng Loh, Chao Feng
Herein we demonstrate that an alkylation of indoles could be accessed through C-H bond functionalization with α,α-difluorovinyl tosylate. The key aspect for the effective alkylation is the influence of the fluorine substituents on the reactivity of the C[double bond, length as m-dash]C double bond, allowing regioselective insertion as well as an indolyl group shift process. Furthermore, the fluorides are removed through alcoholysis to furnish the alkylation product as a traceless auxiliary.
May 17, 2018: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/29769780/scalp-hair-as-biomarker-for-chronic-fluoride-exposure-among-fluoride-endemic-and-low-fluoride-areas-a-comparative-study
#8
Neha Arun Joshi, C G Ajithkrishnan
Objective: To investigate scalp hair as biomarker for chronic fluoride exposure among fluoride endemic and low fluoride areas. Methodology: Two areas were identified in Vadodara district, Ajod, as a low fluoride area (Fluoride content of drinking water = 0.11 ppm) and Karsan, a high fluoride area (fluoride content in drinking water = 3.43 ppm). The study was performed on a total of 36 participants from the two villages, 18 from Ajod and 18 from Karsan. Thylstrup Fejerskov Index (TFI) was recorded for each of the participants and sample of hair was collected from the occipital region...
March 2018: International Journal of Trichology
https://www.readbyqxmd.com/read/29769771/evaluation-of-diode-laser-and-stannous-fluoride-in-the-treatment-of-root-sensitivity-after-access-flap-surgery-randomized-controlled-clinical-trial
#9
Chetan Purushottam Raut, Kunal Sunder Sethi, Bhagyashree Kohale, Alefiya Mamajiwala, Ayushya Warang
Background: Postsurgical root sensitivity has always been an enigma to the periodontists. There is a plethora of evidence suggesting the presence of root sensitivity following periodontal flap surgical procedures. Thus, the aim of the present study was to compare and evaluate the effect of low-power diode lasers with and without topical application of stannous fluoride (SnF2 ) gel in the treatment of root sensitivity and also evaluate whether laser creates any placebo effect in the control group or not...
March 2018: Journal of Indian Society of Periodontology
https://www.readbyqxmd.com/read/29769014/effect-of-fluoride-on-major-organs-with-the-different-time-of-exposure-in-rats
#10
Thanusha Perera, Shirani Ranasinghe, Neil Alles, Roshitha Waduge
BACKGROUND: High fluoride levels in drinking water in relation to the prevalence of chronic kidney disease of unknown etiology (CKDu) in Sri Lanka were investigated using rats as an experimental model. METHOD: The effects of fluoride after oral administration of Sodium fluoride (NaF) at levels of 0, 0.5, 5 and 20 ppm F- were evaluated in adult male Wistar rats. Thirty-six rats were randomly divided into 4 groups (n = 9), namely, control, test I, II, and III...
May 16, 2018: Environmental Health and Preventive Medicine
https://www.readbyqxmd.com/read/29768975/arresting-dentine-caries-with-silver-diamine-fluoride-what-s-behind-it
#11
M L Mei, E C M Lo, C H Chu
Unlike other fluoride-based caries preventive agents, silver diamine fluoride (SDF) can simultaneously prevent and arrest coronal and root dentine caries. The profound clinical success of SDF has drawn many clinicians and researchers to study the mechanism of SDF in arresting dentine caries. This critical review discusses how silver and fluoride contribute to caries arrest, in terms of their effects on bacteria as well as on the mineral and organic content of dentine. Silver interacts with bacterial cell membrane and bacterial enzymes, which can inhibit bacterial growth...
May 1, 2018: Journal of Dental Research
https://www.readbyqxmd.com/read/29768833/effect-of-dispersoid-on-sulfonium-ionic-liquid-based-gel-polymer-electrolyte-for-lithium-secondary-battery
#12
R Muthupradeepa, M Sivakumar, R Subadevi, V Suryanarayanan, Wei-Ren Liu
The present study emphases on the effect of toting of TiO2 filler on the electrochemical enactment of polymer electrolyte containing PVdF-co-HFP(30) + SEt3TFSI(10) + EC/PC(60) + TiO2(x) wt% (Poly (vinylidene fluoride-co-hexafluoropropylene + Triethylsulfoniumbis(trifluoromethylsulfonyl)imide + Ethylene carbonate/Propylene carbonate (1:1 ratio) + Titanium dioxide) for lithium battery applications. Composite electrolytes with different weight percentages of TiO2 were prepared and characterized by different surface analytical, thermal and electrochemical techniques...
January 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29768805/an-isomorphously-substituted-fe-bea-zeolite-with-high-fe-content-facile-synthesis-and-characterization
#13
Yusuke Naraki, Ko Ariga, Hideyuki Oka, Hirokazu Kurashige, Tsuneji Sano
An isomorphously substituted Al-free Fe-BEA zeolite with extremely high Fe content (~7 wt.%) was synthesized by a facile and industrially friendly method using an excess amount of NaOH. The obtained Fe-BEA zeolite was highly crystalline and showed a well-facetted bipyramidal morphology, similarly to beta zeolites synthesized in a fluoride medium. The chemical states of Fe in the above zeolite were investigated by diffuse reflectance ultraviolet-visible (UV-Vis) absorption spectroscopy, electron paramagnetic resonance (EPR) spectroscopy, and X-ray absorption fine structure (XAFS) spectroscopy...
January 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29768680/cu-i-catalyzed-pentafluoroethylation-of-aryl-iodides-in-the-presence-of-tetrafluoroethylene-and-cesium-fluoride-determining-the-route-to-key-pentafluoroethyl-cu-i-intermediate
#14
Masato Ohashi, Naoyoshi Ishida, Kota Ando, Yu Hashimoto, Anna Shigaki, Kotaro Kikushima, Sensuke Ogoshi
The Cu(I)-catalyzed pentafluoroethylation of iodoarenes via the fluorocupration of tetrafluoroethylene (TFE) is disclosed. The active species, (phen)CuC₂F₅, was isolated and its molecular structure confirmed by a single-crystal X-ray diffraction analysis. The key to the successful suppression of the competing oligomerization of TFE is to refrain from stirring the reaction mixture. A mechanistic study clearly discarded the possibility that the catalytic reaction proceeds via a radical pathway.
May 16, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29768522/tif4-varnish-protects-the-retention-of-brackets-to-enamel-after-in-vitro-mild-erosive-challenge
#15
Maria Isabel Dantas de Medeiros, Hugo Lemes Carlo, Rogério Lacerda Dos Santos, Frederico Barbosa Sousa, Ricardo Dias de Castro, Renata Cristina Sobreira França, Fabíola Galbiatti de Carvalho
The effect of fluoride agents on the retention of orthodontic brackets to enamel under erosive challenge is little investigated. The aim of this study was to evaluate the effect of titanium tetrafluoride (TiF4) and sodium fluoride (NaF) agents on the shear bond strength of brackets to enamel and on the enamel microhardness around brackets under erosive challenge. Brackets were bonded to bovine incisors. Five groups were formed according to fluoride application (n=10): TiF4 varnish, TiF4 solution, NaF varnish, NaF solution and control (without application)...
May 14, 2018: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/29767830/effect-of-homeopathic-dilutions-of-cuprum-arsenicosum-on-the-electrical-properties-of-poly-vinylidene-fluoride-co-hexafluoropropylene
#16
Anandalal Gayen, Dheeraj Mondal, Poonam Bandyopadhyay, Debbethi Bera, Durga Sankar Bhar, Sukhen Das, Raj Kumar Manchanda, Anil Kumar Khurana, Debadatta Nayak, Biplab Kumar Paul, Papiya Nandy
BACKGROUND:  We report the effects of nanoparticles in homeopathic preparations of copper salts on the electrical properties of polymer film. Previous work showed that the incorporation of metal-derived homeopathic medicines increases the dielectric constant and alternating current (AC) conductivity of an electroactive polymer film that is commonly used as a capacitor in the electronic industry.We report here the effect of dilution of one homeopathic medicine, Cuprum arsenicosum ( CuAs ), at 200C potency on the electrical properties of the polymer film of poly(vinylidene fluoride-co-hexafluoropropylene)...
May 2018: Homeopathy: the Journal of the Faculty of Homeopathy
https://www.readbyqxmd.com/read/29767415/micellized-tris-bipyridine-ruthenium-catalysts-affording-preparative-amounts-of-hydrated-electrons-with-a-green-light-emitting-diode
#17
Robert Naumann, Florian Lehmann, Martin Goez
We have explored alkyl substitution of the ligands as a means to improve the performance of the title complexes in photoredox catalytic systems that produce synthetically useable amounts of hydrated electrons through photon pooling. Despite generating a superreductant, these electron sources only consume the bioavailable ascorbate and are driven by a green light-emitting diode (LED). The substitutions influence the catalyst activity through the quenching and recombination rates across the micelle-water interface, and the photoionization quantum yield...
May 16, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29767182/morphology-control-of-anatase-tio-2-for-well-defined-surface-chemistry
#18
Gabriel Jeantelot, Samy Ould-Chikh, Julien Sofack-Kreutzer, Edy Abou-Hamad, Dalaver H Anjum, Sergei Lopatin, Moussab Harb, Luigi Cavallo, Jean-Marie Basset
A specific allotrope of titanium dioxide (anatase) was synthesized both with a standard thermodynamic morphology ({101}-anatase) and with a highly anisotropic morphology ({001}-anatase) dominated by the {001} facet (81%). The surface chemistry of both samples after dehydroxylation was studied by 1H NMR and FT-IR. The influence of surface fluorides on the surface chemistry was also studied by 1H NMR, FT-IR and DFT. Full attribution of the IR spectra of anatase with dominant {001} facets could be provided based on experimental data and further confirmed by DFT...
May 16, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29766564/personal-oral-hygiene-and-dental-caries-a-systematic-review-of-randomised-controlled-trials
#19
Philippe Pierre Hujoel, Margaux Louise A Hujoel, Georgios A Kotsakis
OBJECTIVE: To conduct a systematic review of randomised trials assessing the association between personal oral hygiene and dental caries in the absence of the confounding effects of fluoride. BACKGROUND: Dental caries continues to affect close to 100% of the global population. There is a century-old conflict on whether dental caries is caused by poor oral hygiene or poorly formed teeth (ie, teeth with dental defects). Resolving this conflict is of significant public health importance as these two hypotheses on dental caries aetiology can lead to different prevention strategies...
May 15, 2018: Gerodontology
https://www.readbyqxmd.com/read/29766246/comparison-of-68-ga-ga-psma-11-pet-ct-with-18-f-naf-pet-ct-in-the-evaluation-of-bone-metastases-in-metastatic-prostate-cancer-patients-prior-to-radionuclide-therapy
#20
Christian Uprimny, Anna Svirydenka, Josef Fritz, Alexander Stephan Kroiss, Bernhard Nilica, Clemens Decristoforo, Roland Haubner, Elisabeth von Guggenberg, Sabine Buxbaum, Wolfgang Horninger, Irene Johanna Virgolini
AIM: The purpose of this study was to investigate the diagnostic performance of 68 Ga-PSMA-11 PET/CT in the evaluation of bone metastases in metastatic prostate cancer (PC) patients scheduled for radionuclide therapy in comparison to [18 F]sodium fluoride (18 F-NaF) PET/CT. METHODS: Sixteen metastatic PC patients with known skeletal metastases, who underwent both 68 Ga-PSMA-11 PET/CT and 18 F-NaF PET/CT for assessment of metastatic burden prior to radionuclide therapy, were analysed retrospectively...
May 16, 2018: European Journal of Nuclear Medicine and Molecular Imaging
keyword
keyword
24411
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"