GF95820048

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Copper rewired.

Nature, 508(7495), 150-150 (2014-04-12)

Removal of copper ions from water using epichlorohydrin cross-linked beta-cyclodextrin polymer: characterization, isotherms and kinetics.

M Tajuddin Sikder et al.

Water environment research : a research publication of the Water Environment Federation, 86(4), 296-304 (2014-05-24)

Beta-cyclodextrin (beta-CD) cross-linked with epichlorohydrin to form water insoluble beta-cyclodextrin polymer (beta-CDP) has been shown to be an effective sorbent for sorption of organic particles, but the sorption of copper (Cu2+) in aqueous solutions by beta-CDP has not been conducted.

Contamination of apple orchard soils and fruit trees with copper-based fungicides: sampling aspects.

Quanying Wang et al.

Environmental monitoring and assessment, 187(1), 4121-4121 (2014-11-20)

Accumulations of copper in orchard soils and fruit trees due to the application of Cu-based fungicides have become research hotspots. However, information about the sampling strategies, which can affect the accuracy of the following research results, is lacking. This study

The link between copper and Wilson's disease.

Rupert Purchase

Science progress, 96(Pt 3), 213-223 (2013-11-20)

Wilson's disease (hepatolenticular degeneration) is a rare inherited autosomal recessive disorder of copper metabolism leading to copper accumulation in the liver and extrahepatic organs such as the brain and cornea. Patients may present with combinations of hepatic, neurological and psychiatric

Economic geology. Seafloor mining plan advances, worrying critics.

Carolyn Gramling

Science (New York, N.Y.), 344(6183), 463-463 (2014-05-03)

Biochemical characterization of P-type copper ATPases.

Giuseppe Inesi et al.

The Biochemical journal, 463(2), 167-176 (2014-09-23)

Copper ATPases, in analogy with other members of the P-ATPase superfamily, contain a catalytic headpiece including an aspartate residue reacting with ATP to form a phosphoenzyme intermediate, and transmembrane helices containing cation-binding sites [TMBS (transmembrane metal-binding sites)] for catalytic activation

Screening and SNP mapping of copper-resistant mutations in C. elegans.

Shaojuan Song et al.

Yi chuan = Hereditas, 36(12), 1261-1268 (2014-12-10)

Copper plays critical roles in biological system; however, it is toxic in excess. To identify novel genes involved in copper metabolism, we performed a whole genome-wide genetic screen in C. elegans model organism to search for mutants which are resistant

Bony adaptation after expansion with light-to-moderate continuous forces.

Collin D Kraus et al.

American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics, 145(5), 655-666 (2014-05-03)

The purpose of this study was to evaluate the biologic response of dentoalveolar bone to archwire expansion with light-to-moderate continuous forces. With a split-mouth experimental design, the maxillary right second premolars of 7 adult male dogs were expanded for 9

Use of nanoporous Cu(II) ion imprinted polymer as a new sorbent for preconcentration of Cu(II) in water, biological, and agricultural samples and its determination by electrothermal atomic absorption spectrometry.

Hamid Fazelirad et al.

Journal of AOAC International, 97(4), 1159-1166 (2014-08-26)

A new and selective Cu(ll) ion imprinted polymer was prepared by formation of 1-(2-pyridylazo)-2-naphthol complex for selective extraction and preconcentration of Cu ions. Polymerization was performed with ethylene glycol dimethacrylate as a crosslinking monomer and methacrylic acid as a functional

Fate of copper complexes in hydrothermally altered deep-sea sediments from the Central Indian Ocean Basin.

Parthasarathi Chakraborty et al.

Environmental pollution (Barking, Essex : 1987), 194, 138-144 (2014-08-12)

The current study aims to understand the speciation and fate of Cu complexes in hydrothermally altered sediments from the Central Indian Ocean Basin and assess the probable impacts of deep-sea mining on speciation of Cu complexes and assess the Cu

ROI-scavenging enzyme activities as toxicity biomarkers in three species of marine microalgae exposed to model contaminants (copper, Irgarol and atrazine).

Pablo Lozano et al.

Ecotoxicology and environmental safety, 104, 294-301 (2014-04-15)

There is a need to develop efficient tools to prevent damage to marine ecosystems due to pollution. Since microalgae play a key role in marine ecosystems, they are considered potentially useful for quick and sensitive toxicity bioassays. In this study

Detection of increased 64Cu uptake by human copper transporter 1 gene overexpression using PET with 64CuCl2 in human breast cancer xenograft model.

Kim KI, Jang SJ, Park JH, et al.

Journal of Nuclear Medicine, 55(10), 1692-1698 (2014)

The copper intrauterine device for emergency contraception: an opportunity to provide the optimal emergency contraception method and transition to highly effective contraception.

Amna I Dermish et al.

Expert review of medical devices, 10(4), 477-488 (2013-07-31)

Worldwide, 40% of all pregnancies are unintended. Widespread, over-the-counter availability of oral emergency contraception (EC) has not reduced unintended pregnancy rates. The EC visit presents an opportunity to initiate a highly effective method of contraception in a population at high

Zinc and copper toxicity in host defense against pathogens: Mycobacterium tuberculosis as a model example of an emerging paradigm.

Olivier Neyrolles et al.

Frontiers in cellular and infection microbiology, 3, 89-89 (2013-12-19)

Deformities of chironomid larvae and heavy metal pollution: from laboratory to field studies.

A Di Veroli et al.

Chemosphere, 112, 9-17 (2014-07-23)

Mouthpart deformities of Chironomus riparius larvae (Diptera) have been investigated to evaluate the toxic effects of contamination by heavy metals in the Genna Stream (Central Italy), situated in an area subjected to intensive swine farms (40000 heads). The livestock farming

Evaluation of the leucine incorporation technique for detection of pollution-induced community tolerance to copper in a long-term agricultural field trial with urban waste fertilizers.

Jonas Duus Stevens Lekfeldt et al.

Environmental pollution (Barking, Essex : 1987), 194, 78-85 (2014-08-06)

Copper (Cu) is known to accumulate in agricultural soils receiving urban waste products as fertilizers. We here report the use of the leucine incorporation technique to determine pollution-induced community tolerance (Leu-PICT) to Cu in a long-term agricultural field trial. A

Physiological responses of biomass allocation, root architecture, and invertase activity to copper stress in young seedlings from two populations of Kummerowia stipulacea (maxim.) Makino.

Luan Zhang et al.

Ecotoxicology and environmental safety, 104, 278-284 (2014-04-15)

In the current study, we hypothesize that mine (metallicolous) populations of metallophytes form a trade-off between the roots and shoots when under copper (Cu) stress to adapt themselves to heavy metal contaminated habitats, and thus, differ from normal (non-metallicolous) populations

Copper complexes of bioactive ligands with superoxide dismutase activity.

Huma Khalid et al.

Mini reviews in medicinal chemistry, 13(13), 1944-1956 (2013-09-28)

Free radicals or reactive oxygen species (ROS) are highly toxic and their damaging effects result in a variety of detrimental health issues such as neurodegenerative, cardiovascular and age-related diseases. Human body has evolved an effective defense system including superoxide dismutase

Copper is required for oncogenic BRAF signalling and tumorigenesis.

Donita C Brady et al.

Nature, 509(7501), 492-496 (2014-04-11)

The BRAF kinase is mutated, typically Val 600→Glu (V600E), to induce an active oncogenic state in a large fraction of melanomas, thyroid cancers, hairy cell leukaemias and, to a smaller extent, a wide spectrum of other cancers. BRAF(V600E) phosphorylates and

Solid-phase extraction of copper(II) in water and food samples using silica gel modified with bis(3-aminopropyl)amine and determination by flame atomic absorption spectrometry.

Duygu Cagirdi et al.

Journal of AOAC International, 97(4), 1137-1142 (2014-08-26)

A simple and selective separation and preconcentration method was developed for the determination of Cu(ll) ions. This method is based on adsorption of Cu(ll) ions from aqueous solution on a bis(3-aminopropyl)amine modified silica gel column and flame atomic absorption spectrometric

A novel straightforward synthesis of 2,4-disubstituted-1,3,5-triazines via aerobic copper-catalyzed cyclization of amidines with DMF.

Xiaowen Xu et al.

Organic letters, 16(13), 3540-3543 (2014-06-17)

A novel straightforward synthesis of both symmetrical and unsymmetrical 2,4-disubstituted-1,3,5-triazines via aerobic copper-catalyzed cyclization of amidines with DMF as a one-carbon synthon has been developed. The presented method allows synthesizing the products that are currently inaccessible or challenging to prepare

Is vetiver grass of interest for the remediation of Cu and Cd to protect marketing gardens in Burkina Faso?

Norbert Ondo Zue Abaga et al.

Chemosphere, 113, 42-47 (2014-07-30)

In Burkina-Faso, urban vegetable agriculture is often characterized by urban solid waste fertilizer inputs containing heavy metals such as Cu and Cd. Thus, the relevance of surrounding urban vegetable plots with vetiver hedges to reduce environmental pollution by Cu and

Time-resolved infrared spectroscopic studies of ligand dynamics in the active site from cytochrome c oxidase.

Marten H Vos et al.

Biochimica et biophysica acta, 1847(1), 79-85 (2014-08-15)

The catalytic site of heme-copper oxidases encompasses two close-lying ligand binding sites: the heme, where oxygen is bound and reduced and the CuB atom, which acts as ligand entry and release port. Diatomic gaseous ligands with a dipole moment, such

Metals: setting a trap for copper.

Valeria Culotta

Nature chemical biology, 10(12), 986-987 (2014-10-27)

Comparative assessment of alignment efficiency and space closure of active and passive self-ligating vs conventional appliances in adolescents: a single-center randomized controlled trial.

Goldie Songra et al.

The aim of this study was to compare the time to initial alignment and extraction space closure using conventional brackets and active and passive self-ligating brackets. One hundred adolescent patients 11 to 18 years of age undergoing maxillary and mandibular

Ocular manifestations of monoclonal copper-binding immunoglobulin.

Sejal Shah et al.

Survey of ophthalmology, 59(1), 115-123 (2013-10-12)

The dense accumulation of copper in Descemet membrane and lens capsule is the characteristic manifestation of a circulating monoclonal antibody with strong affinity for copper. The overproduction of this monoclonal immunoglobulin may be associated with either multiple myeloma or a

Acute and chronic toxicities of zinc pyrithione alone and in combination with copper to the marine copepod Tigriopus japonicus.

Vivien W W Bao et al.

Aquatic toxicology (Amsterdam, Netherlands), 157, 81-93 (2014-12-03)

Zinc pyrithione (ZnPT) is a widely used booster biocide in combination with copper (Cu) in antifouling paints as a substitute for tributyltin. The co-occurrence of ZnPT and Cu in coastal marine environments is therefore very common, and may pose a

The role of zinc and copper in autism spectrum disorders.

Geir Bjorklund

Acta neurobiologiae experimentalis, 73(2), 225-236 (2013-07-05)

Autism spectrum disorders (ASDs) are a group of developmental disabilities that can cause significant social, communication and behavioral challenges. Several studies have suggested a disturbance in the copper (Cu) and zinc (Zn) metabolism in ASDs. Zinc deficiency, excess Cu levels

Racemic synthesis and solid phase peptide synthesis application of the chimeric valine/leucine derivative 2-amino-3,3,4-trimethyl-pentanoic acid.

M Pelà et al.

Die Pharmazie, 69(7), 496-499 (2014-07-31)

The synthesis of non natural amino acid 2-amino-3,3,4-trimethyl-pentanoic acid (Ipv) ready for solid phase peptide synthesis has been developed. Copper (I) chloride Michael addition, followed by a Curtius rearrangement are the key steps for the lpv synthesis. The racemic valine/leucine

Determination of traces of copper and zinc in honeys by the solid phase extraction pre-concentration followed by the flame atomic absorption spectrometry detection.

Helena Stecka et al.

Environmental monitoring and assessment, 186(10), 6145-6155 (2014-05-30)

A simple and fast solid phase extraction procedure was developed to pre-concentrate traces of Cu and Zn prior to their determination in honey samples by flame atomic absorption spectrometry. The sample preparation included dissolution of honey samples and the passage

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