Read by QxMD icon Read

copper zinc

Bhanoo Saulick, Vishwakalyan Bhoyroo, Nadeem Nazurally, Bhanooduth Lalljee
Concentrations of heavy metals arsenic, cadmium, lead and mercury and trace elements chromium, copper, nickel and zinc were tested in the muscle tissue of four commercial edible lethrinids fish species from different region of Mauritius. Sky emperor ( Lethrinus mahsena ) was collected from coastal regions as well as offshore regions (banks) for this study. Blackspot emperor ( Lethrinus harak ) and spangled emperor ( Lethrinus nebulosus ) were also studied for their popularity in the fish market. Condition factor was calculated for each fish and the highest value obtained was in Lethrinus mahsena collected from offshore regions (2...
October 20, 2017: Italian Journal of Food Safety
Deborah L Narh Mensah, Peter Addo, Matilda Dzomeku, Mary Obodai
Pineapple rind is a by-product of the pineapple processing industry and contains nutrients and other compounds which must be utilized as a bioresource for socio-economic benefits while preventing the potential problems of improper agroindustrial biomass disposal methods. Pleurotus ostreatus is an edible oyster mushroom with medicinal properties and can be cultivated on various agroindustrial biomass, including sawdust containing supplements. Pineapple rind was powdered and used as a supplement of composted sawdust at 2%, 5%, 10%, 12%, 15%, and 20% (w/w) on dry weight basis...
March 2018: Food Science & Nutrition
Agnieszka Drozd, Dominika Wojewska, Manuel David Peris-Díaz, Piotr Jakimowicz, Artur Krężel
Metallothioneins (MTs), small cysteine-rich proteins, present in four major isoforms, are key proteins involved in zinc and copper homeostasis in mammals. To date, only one X-ray crystal structure of a MT has been solved. It demonstrates seven bivalent metal ions bound in two structurally independent domains with M4S11 (α) and M3S9 (β) clusters. Recent discoveries indicate that Zn(ii) ions are bound with MT2 with the range from nano- to picomolar affinity, which determines its cellular zinc buffering properties that are demonstrated by the presence of partially Zn(ii)-depleted MT2 species...
March 21, 2018: Metallomics: Integrated Biometal Science
Bernadette U Ukah, Ogbonnaya Igwe, Peter Ameh
In Ajao Estate, it is believed that poor quality of its groundwater is unconnected to the dislodging of wastewater into the environment by food- and wine-producing industries operating in the area. To ascertain this claim, the impact of this wastewater on microbiological and physicochemical quality of the groundwater was evaluated. Microbiological result of water samples revealed decrease in Staphylococcus aureus, Clostridium spp., Escherichia coli, etc. count from the industrial wastewater dislodging point...
March 20, 2018: Environmental Monitoring and Assessment
T H Wang, S Y Wang, X D Wang, H Q Jiang, Y Q Yang, Y Wang, J L Cheng, C T Zhang, W W Liang, H L Feng
Oxidative stress exhibits a central role in the course of amyotrophic lateral sclerosis (ALS), a progressive neurodegenerative disease commonly found to include a copper/zinc superoxide dismutase (SOD1) gene mutation. Fisetin, a natural antioxidant, has shown benefits in varied neurodegenerative diseases. The possible effect of fisetin in ALS has not been clarified as of yet. We investigated whether fisetin affected mutant hSOD1 ALS models. Three different hSOD1-related mutant models were used: Drosophila expressing mutant hSOD1G85R , hSOD1G93A NSC34 cells, and transgenic mice...
March 17, 2018: Neuroscience
Abir Goswami, Susnata Pramanik, Michael Schmittel
A catalytically active three-component nanorotor is reversibly self-assembled and disassembled by remote control. When zinc(ii) ions (2 equiv.) are added as an external chemical trigger to the mixture of transmitter [Cu(1)]+ and pre-rotor assembly [(S)·(R)], two equiv. of copper(i) ions translocate from [Cu(1)]+ to the two phenanthroline sites of [(S)·(R)]. As a result, [Zn(1)]2+ forms along with the three-component assembly [Cu2(S)(R)]2+, which is both a nanorotor (k298 = 46 kHz, ΔH‡ = 49.1 ± 0.4 kJ mol-1, ΔS‡ = 9...
March 20, 2018: Chemical Communications: Chem Comm
Myeongsang Lee, Jae In Kim, Sungsoo Na, Kilho Eom
Amyloid β (Aβ) aggregates, which are a hallmark for neurodegenerative disease, are formed through a self-assembly process such as aggregation of Aβ peptide chains. This aggregation process depends on the solvent conditions under which the proteins are aggregated. Nevertheless, the underlying mechanism of the ionic effect on the formation and stability of amyloid aggregates has not been fully understood. Here, we report how metal ions play a role in the formation and stability of Aβ aggregates at different length scales, i...
March 20, 2018: Physical Chemistry Chemical Physics: PCCP
Weixiang Liu, Yukun Qin, Song Liu, Ronge Xing, Huahua Yu, Xiaolin Chen, Kecheng Li, Pengcheng Li
Based on a condensation reaction, a chitosan-derivative-bearing amino pyridine group was prepared and subsequently followed by coordination with cupric ions, zinc ions and nickel ions to synthesize chitosan metal complexes. The calculations using the density functional theory (DFT) show that the copper ions and nickel ions underwent dsp2 hybridization, the zinc ions underwent sp3 hybridization, and they all formed a coordination bond with the carbon atom in the p-π conjugate group. The antifungal properties of O-CSPX-M against Phytophthora capsici (P...
March 19, 2018: Scientific Reports
Lisa Ito, Takayuki Omori, Minoru Yoneda, Toru Yamaguchi, Ryuta Kobayashi, Yoshio Takahashi
The sediments of Majuro Atoll, Marshall Islands, consist of bioclastic materials, including foraminifera and coral debris. The sedimentary depth profiles of elements showed that various elements including zinc (Zn) and copper (Cu) were enriched in the upper layers of the islands of Majuro Atoll. Carbon-14 dating revealed that the sedimentation of the upper layer was completed before 1670 and 542 cal BP in Laura and Calalen, respectively. The enriched elements could be categorized by their origins: (a) terrestrial elements transported as dust (aluminum (Al) and rare earth elements (REEs)); (b) anthropogenic elements (Zn and Cu); and (c) elements supplied by seabirds (phosphorus (P))...
March 13, 2018: Chemosphere
Arup Tarai, Jubaraj B Baruah
A series of mononuclear complexes of divalent nickel and zinc with N-(4-methoxyphenyl)-2-(propan-2-ylidene)hydrazine carbothioamide (H2Lmethoxy) as well as with N-(4-nitrophenyl)-2-(propan-2-ylidene)hydrazine carbothioamide (H2Lnitro) have been structurally characterised. Among these two ligands, H2Lnitro formed an analogous copper(ii) complex to that of nickel and zinc, whereas H2Lmethoxy undergoes a catalytic cyclisation reaction in the presence of copper(ii) nitrate trihydrate. Control experiments based on ESR have revealed that copper(ii) is reduced to copper(i) and reverts back to copper(ii) as the cyclisation reaction proceeds, generating a catalytic reaction...
March 19, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
Xiong Li, Boqun Li, Yongping Yang
We administered foliar applications of 50, 100, and 200 mg L-1 selenium (Se, selenite) on turnip ( Brassica rapa var. rapa Linn.) and detected the changes in the main nutrient components in fleshy roots. Results showed that the foliar application of Se (IV) significantly increased the Se content in turnip, and Se (IV) positively affected the uptake of several mineral elements, including magnesium, phosphorus, iron, zinc, manganese, and copper. Se (IV) treatments also improved the synthesis of protein and multiple amino acids instead of crude fat and total carbohydrate in turnip, indicating that the foliar application of Se (IV) could enhance Se biofortification in turnip and promote its nutritional value...
2018: Frontiers in Chemistry
Eiichi Tokuda, Takao Nomura, Shinji Ohara, Seiji Watanabe, Koji Yamanaka, Yuta Morisaki, Hidemi Misawa, Yoshiaki Furukawa
Dominant mutations in the gene encoding copper and zinc-binding superoxide dismutase (SOD1) cause amyotrophic lateral sclerosis (ALS). Abnormal accumulation of misfolded SOD1 proteins in spinal motoneurons is a major pathological hallmark in SOD1-related ALS. Dissociation of copper and/or zinc ions from SOD1 has been shown to trigger the protein aggregation/oligomerization in vitro, but the pathological contribution of such metal dissociation to the SOD1 misfolding still remains obscure. Here, we tested the relevance of the metal-deficient SOD1 in the misfolding in vivo by developing a novel antibody (anti-apoSOD), which exclusively recognized mutant SOD1 deficient in metal ions at its copper-binding site...
March 15, 2018: Biochimica et Biophysica Acta
Happy Agarwal, Soumya Menon, S Venkat Kumar, S Rajeshkumar
A large array of diseases caused by bacterial pathogens and origination of multidrug resistance in their gene provokes the need of developing new vectors or novel drug molecules for effective drug delivery and thus, better treatment of disease. The nanoparticle has emerged as a novel drug molecule in last decade and has been used in various industrial fields like cosmetics, healthcare, agricultural, pharmaceuticals due to their high optical, electronic, medicinal properties. Use of nanoparticles as an antibacterial agent remain in current studies with metal nanoparticles like silver, gold, copper, iron and metal oxide nanoparticles like zinc oxide, copper oxide, titanium oxide and iron oxide nanoparticles...
March 15, 2018: Chemico-biological Interactions
Julia Krabbe, André Esser, Stephanie Kanzler, Till Braunschweig, Svetlana Kintsler, Jan Spillner, Thomas Schröder, Sebastian Kalverkamp, Galina Balakirski, Benjamin Gerhards, Annette D Rieg, Thomas Kraus, Peter Brand, Christian Martin
Recently, the pro-inflammatory effects of metal inert gas brazing welding fumes containing zinc and copper have been demonstrated in humans. Here, murine, rat and human precision cut lung slices (PCLS) were incubated in welding fume containing media with 0.1, 1, 10 and 100 μg/ml for 24 or 48 h. 24 h incubation were determined either by incubation for the total time or for only 6 h followed by a 18 h post-incubation phase. Cytotoxicity, proliferation and DNA repair rates, and cytokine levels were determined...
March 10, 2018: Journal of Trace Elements in Medicine and Biology
Longfei Liu, Deyun Li, Chengliang Li, Rong Ji, Xiaofei Tian
Due to considerable application of perfluorooctanoic acid (PFOA) and its refractory degradation, the widespread distribution of PFOA has already resulted in its' risks to environment and organisms. However, the intrinsic characteristic of pristine multi-walled carbon nanotubes (MWCNTs) limited their application for removing PFOA from aqueous medium. Therefore, three nano-metals (nano-crystalline iron, copper and zinc) grafted MWCNTs were synthesized and characterized by BET-N2 , TEM, FTIR, XPS and XRD as well as MWCNTs (as the control treatment) in this study...
March 8, 2018: Journal of Hazardous Materials
Tommaso Filippini, Silvia Cilloni, Marcella Malavolti, Federica Violi, Carlotta Malagoli, Marina Tesauro, Ilaria Bottecchi, Angela Ferrari, Luciano Vescovi, Marco Vinceti
This study provides the dietary intakes of six trace elements (cadmium, chromium, copper, manganese, selenium and zinc), generally characterized by both nutritional and toxicological features depending on their exposure. Being diet the most relevant source of exposure to trace elements in non-professionally exposed subjects, we measured content of these trace elements in foods composing the typical Italian diet using inductively coupled plasma-mass spectrometry, and assessing dietary habits using a validated semi-quantitative food frequency questionnaire we eventually estimated dietary daily intake of trace elements in a Northern Italian community...
March 8, 2018: Journal of Trace Elements in Medicine and Biology
Mustafa Türkmen, Derya Budur
The present study examined heavy metal contamination in six edible wild mushroom species obtained from twenty-one stations in Turkey's Black Sea region. Heavy metals were analyzed ICP-MS. Concentrations of cadmium, cobalt, chromium, copper, iron, manganese, nickel, lead and zinc were measured in the ranges of 0.08-3.37, 0.01-2.50, 0.36-6.26, 17.5-122, 97.2-3919, 4.61-102, 12.7-24.2, 0.15-1.80 and 34.4-225 mg/kg, respectively. The highest metal was iron in all of the examined species from the stations; and differences among metal levels across all of stations were found to be statistically significant (p < 0...
July 15, 2018: Food Chemistry
Shumeng Kou, Gilles Vincent, Emmanuel Gonzalez, Frederic E Pitre, Michel Labrecque, Nicholas J B Brereton
Industrial and agricultural activities have caused extensive metal contamination of land throughout China and across the globe. The pervasive nature of metal pollution can be harmful to human health and can potentially cause substantial negative impact to the biosphere. To investigate the impact of anthropogenic metal pollution found in high concentrations in industrial, agricultural, and urban environments, 16S ribosomal RNA gene amplicon sequencing was used to track change in the amplified microbial community after metal contamination in a large-scale field experiment in Shanghai...
2018: Frontiers in Microbiology
Joanna Suliburska, Katarzyna Skrypnik, Monika Szulińska, Justyna Kupsz, Paweł Bogdański
BACKGROUND: Hypotensive therapy leads to a number of trace elements metabolism disturbances. Zinc balance is frequently affected by antihypertensive treatment. AIM: To evaluate the effect of a hypotensive treatment, modified diet and zinc supplementation on mineral status and selected biochemical parameters in newly diagnosed hypertensive patients on monotherapy. METHODS: In the first stage, arterial hypertension in ninety-eight human subjects was diagnosed...
May 2018: Journal of Trace Elements in Medicine and Biology
Stefania Squadrone, Paola Brizio, Cecilia Mancini, Maria Cesarina Abete, Alfredo Brusco
Spinocerebellar ataxia type 2 (SCA2) is a neurological disorder characterized by cerebellar dysfunction. The possible association between metals and neurodegenerative diseases is under constant investigation, with particular focus on their involvement in oxidative stress and their potential role as biomarkers of these pathologies. Whole blood samples of SCA2 patients and of healthy individuals were subjected to multi-elemental analysis by inductively coupled plasma-mass spectrometry (ICP-MS). Reduced levels of manganese and copper were found in SCA2 patients, while zinc and vanadium concentrations were significantly higher in patients compared to controls...
May 2018: Journal of Trace Elements in Medicine and Biology
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"