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Showing 1-30 of 87 results for "451665" within Papers
Bhalerao, U.T. et al.
Synthetic Communications, 26, 3081-3081 (1996)
Feng Wang et al.
Chemical communications (Cambridge, England), 49(5), 517-519 (2012-11-30)
A novel and efficient copper-catalyzed Michael addition of acrylic derivatives with primary alcohols in the presence of base has been developed. The protocol uses readily available acrylic derivatives and primary alcohols as the starting materials, inexpensive CuCl(2) as the catalyst
Yingshuai Liu et al.
Journal of colloid and interface science, 439, 7-11 (2014-12-03)
Polyamine-capped gold nanorods (AuNRs) were developed as nanoprobes for localized surface Plasmon resonance (LSPR)-based simple, selective, and sensitive detection of Cu(2+) ions. Poly(sodium-4-styrenesulfonate) (PSS) and polyethylenimine (PEI) was successively adsorbed on the positively charged AuNRs via electrostatic adsorption, resulting in
Xiangchi Peng et al.
Contraception, 86(4), 413-418 (2012-03-27)
This study was conducted to investigate the antifertility effectiveness of a novel copper-containing composite used in intrauterine contraceptive devices (IUDs) that contain cupric chloride/silicon dioxide/poly(vinyl alcohol) (CuCl₂/SiO₂/PVA) and the releasing behavior of cupric ions in the composite into the serum
Yangyang Wang et al.
Oncotarget, 5(11), 3743-3755 (2014-07-09)
The goal of adjuvant (post-surgery) radiation therapy (RT) for breast cancer (BC) is to eliminate residual cancer cells, leading to better local tumor control and thus improving patient survival. However, radioresistance increases the risk of tumor recurrence and negatively affects
Rafael Paletta-Silva et al.
Experimental parasitology, 131(1), 63-68 (2012-03-28)
Free Cu(2+) is toxic due to the capacity of free copper ions to catalyze the production of reactive oxygen species (ROS) that can modify the structure and/or function of biomolecules. In addition, non-specific binding to enzymes, which modifies their catalytic
Mónica João Barros Amorim et al.
Environmental pollution (Barking, Essex : 1987), 164, 164-168 (2012-03-01)
Environmental effects of copper nanoparticles are little studied in terrestrial ecosystems. In the present article, the toxicity of copper nanoparticles (Cu-NP) on the enchytraeid Enchytraeus albidus is compared to the toxicity of a copper-salt (CuCl(2)). The effect parameters studied were
Lydia K Nyasae et al.
Traffic (Copenhagen, Denmark), 15(12), 1344-1365 (2014-09-23)
Physiologic Cu levels regulate the intracellular location of the Cu ATPase ATP7B. Here, we determined the routes of Cu-directed trafficking of endogenous ATP7B in the polarized hepatic cell line WIF-B and in the liver in vivo. Copper (10 µm) caused ATP7B
Bogdan I Tamba et al.
Journal of neuroscience research, 91(4), 554-561 (2013-01-31)
Trace elements represent a group of essential metals or metaloids necessary for life, present in minute amounts. Analgesic adjuvants can enhance the effect of other pain drugs or be used for pain control themselves. Previous studies on the effects of
Mehmet Boğa et al.
Zeitschrift fur Naturforschung. C, Journal of biosciences, 69(9-10), 381-390 (2015-02-26)
Two endemic Cirsium species, C. leucopsis DC. and C. sipyleum O. Schwarz, and C. eriophorum (L.) Scop. growing in Turkey were investigated to establish their secondary metabolites, fatty acid compositions, and antioxidant and anticholinesterase potentials. Spectroscopic methods were used to
Tingting Wang et al.
Journal of pharmaceutical sciences, 108(3), 1264-1271 (2018-11-13)
Poloxamer 188 (P188) is a triblock copolymer of the form polyethylene oxide-polypropylene oxide-polyethylene oxide (PEO-PPO-PEO). The center PPO block is hydrophobic, and the side PEO blocks are hydrophilic, resulting in surface-active properties. P188 has been used in the pharmaceutical industry
Wong Pooi See et al.
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry, 31(10), 997-1003 (2015-10-16)
A new approach for the development of a highly sensitive aluminium(III) ion sensor via the preconcentration of aluminium(III) ion with a self-assembled monolayer on a gold nanoparticles modified screen-printed carbon electrode and current mediation by potassium ferricyanide redox behavior during
Emre Aslan et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 21(12), 4585-4589 (2015-02-05)
The electrochemical deposition of Cu nanoparticles with an average diameter of approximately 25-35 nm has been reported at liquid-liquid interfaces by using the organic-phase electron-donor decamethylferrocene (DMFc). The electrodeposited Cu nanoparticles display excellent catalytic activity for the hydrogen evolution reaction (HER);
Landon John G Edgar et al.
Organic letters, 14(16), 4226-4229 (2012-08-01)
Glycosyl 1-phosphates enriched in the α-anomer are obtained without the use of protecting groups in two steps starting from the free hemiacetal. Condensation of free hemiacetals with toluenesulfonylhydrazide yields a range of glycosylsulfonohydrazide donors which can be oxidized using cupric
Gloria Uccello-Barretta et al.
Journal of pharmaceutical and biomedical analysis, 107, 7-10 (2015-01-07)
In total parenteral nutrition (TPN), especially in the case of preterm infants, simultaneous administration of vitamins and trace elements is still a problematic issue: guidelines put in evidence the lack of specific documentation. In this work NMR spectroscopy was applied
Koharu Tambo et al.
Bioscience, biotechnology, and biochemistry, 77(2), 416-418 (2013-02-09)
Human amyloid-β peptide 1-42 (Aβ) was subjected to a radical reaction by using ascorbic acid and CuCl(2). The percentage of D-aspartic acid (D-Asp) after 24 h had increased to 6.69 ± 0.09%, this being comparable with the reported D-Asp concentration
Chunxia Qin et al.
Journal of nuclear medicine : official publication, Society of Nuclear Medicine, 55(5), 812-817 (2014-03-15)
Human copper transporter 1 (CTR1) is overexpressed in a variety of cancers. This study aimed to evaluate the use of (64)CuCl2 as a theranostic agent for PET and radionuclide therapy of malignant melanoma. CTR1 expression levels were detected by Western
Kusaï Alomar et al.
Journal of inorganic biochemistry, 126, 76-83 (2013-06-25)
The reaction of nickel(II), copper(II) chlorides and cadmium(II) chloride and bromide with thiophene-2,3-dicarboxaldehyde bis(thiosemicarbazone) (2,3BTSTCH2) leads to a series of new complexes: [Ni(2,3BTSTCH)]Cl, [Cu(2,3BTSTC)], [CdCl2(2,3BTSTCH2)] and [CdBr2(2,3BTSTCH2)]. The crystal structures of the ligand and of [Ni(2,3BTSTCH)]Cl complex have been determined.
Su-Jeong Kim et al.
Free radical biology & medicine, 53(4), 936-950 (2012-06-12)
Loss-of-function mutations in the PARK7/DJ-1 gene cause early onset autosomal-recessive Parkinson disease. DJ-1 has been implicated in protection of neurons from oxidative stress and in regulation of transcriptional activity. However, whether there is a relationship between the subcellular localization of
Sufeng Zhang et al.
Molecules (Basel, Switzerland), 25(1) (2020-01-08)
A facile approach was successfully developed for synthesis of cellulose nanocrystals (CNC)-supported magnetic CuFe2O4@Ag@ZIF-8 nanospheres which consist of a paramagnetic CuFe2O4@Ag core and porous ZIF-8 shell. The CuFe2O4 nanoparticles (NPs) were first prepared in the presence of CNC and dispersant.
Yoshiaki Miyamoto et al.
Chemistry, an Asian journal, 8(4), 824-831 (2013-02-05)
The stereoselective direct transformation of N-(propargylic)hydroxylamines into cis-2-acylaziridines was achieved by the combined use of AgBF4 and CuCl. Copper salts were found to promote the transformation of the intermediary 4-isoxazolines into 2-acylaziridines and both 3-aryl- and 3-alkyl-substituted 2-acylaziridines could be
Xiaojie Ding et al.
Luminescence : the journal of biological and chemical luminescence, 30(4), 465-471 (2014-09-30)
Cysteamine (CA)-capped CdTe quantum dots (QDs) (CA-CdTe QDs) were prepared by the reflux method and utilized as an efficient nano-sized fluorescent sensor to detect mercury (II) ions (Hg(2+) ). Under optimum conditions, the fluorescence quenching effect of CA-CdTe QDs was
Krissada Surawathanawises et al.
The Analyst, 141(5), 1669-1677 (2016-02-24)
There is a need to develop inexpensive, portable and easy-to-use devices for viral sample processing for resource-limited settings. Here we offer a solution to efficient virus capture by incorporating macroporous materials with regular structures into microfluidic devices for affinity chromatography.
I V Kushkevych et al.
Ukrains'kyi biokhimichnyi zhurnal (1999 ), 83(6), 104-109 (2012-03-01)
Glutathione is the metal stress protector and changes of its level in the sulfate-reducing bacteria cells under the influence of heavy metal salts have not been studied yet. CdCl2, Pb(NO3)2, CuCl2, and ZnCl2 influence on the total glutathione level in
Huawei Cai et al.
Journal of nuclear medicine : official publication, Society of Nuclear Medicine, 55(4), 622-628 (2014-03-19)
Copper is an element required for cell proliferation and angiogenesis. Human prostate cancer xenografts with increased (64)Cu radioactivity were visualized previously by PET using (64)CuCl2 as a radiotracer ((64)CuCl2 PET). This study aimed to determine whether the increased tumor (64)Cu
Jing Xue et al.
PloS one, 9(10), e109180-e109180 (2014-10-02)
Chloroquine is an established antimalarial agent that has been recently tested in clinical trials for its anticancer activity. The favorable effect of chloroquine appears to be due to its ability to sensitize cancerous cells to chemotherapy, radiation therapy, and induce
Shuxia Zhou et al.
Pharmaceutical research, 30(5), 1311-1327 (2013-02-16)
Metal-catalyzed oxidation (MCO) of proteins is of primary concern in the development of biotherapeutics as it represents a prominent degradation pathway with potential undesired biological and biotherapeutic consequences. We developed a fluorogenic derivatization methodology to study the MCO of IgG1
Jing Tao et al.
Proceedings of the National Academy of Sciences of the United States of America, 114(37), 9832-9837 (2017-09-01)
The optimal functionalities of materials often appear at phase transitions involving simultaneous changes in the electronic structure and the symmetry of the underlying lattice. It is experimentally challenging to disentangle which of the two effects--electronic or structural--is the driving force
Kenji Funaki et al.
Organic letters, 14(24), 6186-6189 (2012-12-12)
Direct arylation of thiophenes and benzothiophenes with aryltrimethylsilanes was effectively catalyzed by PdCl(2)(MeCN)(2) in the presence of CuCl(2) as an oxidant. The reaction preferentially occurred at the β-position of both thiophenes and benzothiophenes.
Halil Gökce et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 96, 139-147 (2012-06-05)
In this study, the metal(II) halide of 2-(2'-thienyl)pyridine, (C(9)H(7)NS), (with synonym, 2-(2'-pyridyl)thiophene and 2-thiophen-2-ylpyridine), (in abbreviated pyth) have been formed by the reaction with copper chloride and was formulated as [Cu(pyth)(2)Cl(2)]. The structure and vibrational wavenumbers of the formed compound
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