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https://www.readbyqxmd.com/read/28335545/reference-values-of-14-serum-trace-elements-for-pregnant-chinese-women-a-cross-sectional-study-in-the-china-nutrition-and-health-survey-2010-2012
#1
Xiaobing Liu, Yu Zhang, Jianhua Piao, Deqian Mao, Yajie Li, Weidong Li, Lichen Yang, Xiaoguang Yang
The development of reference values of trace elements is recognized as a fundamental prerequisite for the assessment of trace element nutritional status and health risks. In this study, a total of 1400 pregnant women aged 27.0 ± 4.5 years were randomly selected from the China Nutrition and Health Survey 2010-2012 (CNHS 2010-2012). The concentrations of 14 serum trace elements were determined by high-resolution inductively coupled plasma mass spectrometry. Reference values were calculated covering the central 95% reference intervals (P2...
March 21, 2017: Nutrients
https://www.readbyqxmd.com/read/28333827/levels-of-silicon-in-maternal-cord-and-newborn-serum-and-their-relation-with-those-of-zinc-and-copper
#2
N Marta Díaz-Gómez, Emmanuel Bissé, Thibault Senterre, Nieves L González-González, Eduardo Domenech, Gabriele Lindinger, Thomas Epting, Flora Barroso
BACKGROUND: Evidence of silicon's importance to health has been gradually accumulating. Nevertheless, there are few studies comparing serum silicon levels in newborns with maternal levels. Likewise, little is known concerning the inter-relation between silicon and other trace elements. OBJECTIVE: The present study evaluated maternal and newborn levels of serum silicon and their relation to those of zinc and copper. METHODS: We measured serum silicon, copper, and zinc in 66 pregnant women, in the umbilical cord of their infants, and in 44 newborns, by atomic absorption spectrophotometry...
April 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28332950/spatiotemporal-trend-analysis-of-metal-concentrations-in-sediments-of-a-residential-california-stream-with-toxicity-and-regulatory-implications
#3
Lenwood W Hall, Ronald D Anderson, William D Killen
The objective of this study was to determine if concentrations of arsenic, cadmium, chromium, copper, lead, nickel and zinc measured in the sediments of a residential stream in California (Pleasant Grove Creek) have changed temporally or spatially from 2006 to 2016. Threshold Effect Levels (TELs), conservative ecological effects benchmarks, and exceedances for the seven metals were also evaluated over the 11-year time period to provide insight into potential metal toxicity to resident benthic communities. In addition, the bioavailability of metals in sediments was also determined by calculating Simultaneous Extracted Metal/Acid Volatle Sulfide (SEM/AVS) ratios to allow an additional assessment of toxicity...
March 23, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28331609/preparation-characterization-antimicrobial-and-cytotoxicity-studies-of-copper-zinc-loaded-montmorillonite
#4
Lefei Jiao, Fanghui Lin, Shuting Cao, Chunchun Wang, Huan Wu, Miaoan Shu, Caihong Hu
BACKGROUND: A series of modified montmorillonites (Mt) including zinc-loaded Mt (Zn-Mt), copper-loaded Mt (Cu-Mt), copper/zinc-loaded Mt with different Cu/Zn ratio (Cu/Zn-Mt-1, Cu/Zn-Mt-2, Cu/Zn-Mt-3) were prepared by an ion-exchange reaction, and characterized using X-ray diffraction (XRD), fourier transformed infrared spectroscopy (FTIR) and transmission electron microscopy (TEM). The specific surface areas, antimicrobial activity and cytotoxicity of the modified Mt were investigated...
2017: Journal of Animal Science and Biotechnology
https://www.readbyqxmd.com/read/28330314/bioremediation-of-heavy-metals-using-an-endophytic-bacterium-paenibacillus-sp-rm-isolated-from-the-roots-of-tridax-procumbens
#5
M Govarthanan, R Mythili, T Selvankumar, S Kamala-Kannan, A Rajasekar, Young-Cheol Chang
The aim of the present study was to assess the bioremediation potential of endophytic bacteria isolated from roots of Tridax procumbens plant. Five bacterial endophytes were isolated and subsequently tested for minimal inhibitory concentration (MIC) against different heavy metals. Amongst the five isolates, strain RM exhibited the highest resistance to copper (750 mg/l), followed by zinc (500 mg/l), lead (450 mg/l), and arsenic (400 mg/l). Phylogenetic analysis of the 16S rDNA sequence suggested that strain RM was a member of genus Paneibacillus...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28328213/reversible-coordination-of-boron-aluminum-zinc-magnesium-and-calcium-hydrogen-bonds-to-bent-cul2-fragments-heavy-%C3%AF-complexes-of-the-lightest-coinage-metal
#6
Alexandra Hicken, Andrew J P White, Mark R Crimmin
A series of copper(I) complexes bearing electron-deficient β-diketiminate ligands have been prepared. The study includes [{{ArNC(CR3)}2CH}Cu(η(2)-toluene)n] (Ar = Mes, R = F, n = 0.5, [12·tol]; Ar = C6F5, R = Me, n = 1, [2·tol]; Ar = 2,6-Cl2C6H3, R = H, n = 0.5, [32·tol]). Reactions of [1-3n·tol] with boranes, alanes, a zinc hydride, a magnesium hydride, and a calcium hydride generate the corresponding σ complexes ([1-3·B], [3·B'], [3·Al], [3·Al'], [1-3·Zn], [1·Mg], and [1·Ca]). These species all form reversibly, being in equilibrium with the arene solvates in solution...
March 22, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28325649/elemental-analysis-of-serum-and-hair-from-pre-eclamptic-south-african-women
#7
K Maduray, J Moodley, C Soobramoney, R Moodley, T Naicker
Pre-eclampsia is a hypertensive disorder that is associated with adverse maternal and perinatal outcomes. It has been proposed that specific trace and macro elements associated with antioxidant activities may also play a contributory role in aetiology of pre-eclampsia. The aim of this study was to measure the concentrations of thirteen different elements in hair and serum samples from women with a diagnosis of pre-eclampsia and compare them with normotensive controls. Venous blood and pubic hair samples were collected from forty-three pre-eclamptic and twenty-three normotensive pregnant women...
March 9, 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/28324255/can-red-deer-antlers-be-used-as-an-indicator-of-environmental-and-edible-tissues-trace-element-contamination
#8
Aleksandra Giżejewska, Józef Szkoda, Agnieszka Nawrocka, Jan Żmudzki, Zygmunt Giżejewski
Venison is an attractive product for consumers concerned with healthy lifestyle; however, it can contain high levels of toxic elements, and therefore, it is a possible source of hazardous contaminants in human diet. Antlers are suitable bioindicators of environmental metal contamination, and herein, we assessed the ability of trace element levels in antlers to indicate levels in edible soft tissues. We determined the concentrations of lead (Pb), cadmium (Cd), mercury (Hg), arsenic (As), copper (Cu), zinc (Zn), and iron (Fe) in the liver, kidney, muscle, and antlers of 14 free-ranging red deer (Cervus elaphus) from northeastern Poland using atomic absorption spectrometry...
March 21, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28323401/zinc-and-copper-effects-on-stability-of-tubulin-and-actin-networks-in-dendrites-and-spines-of-hippocampal-neurons
#9
Laura Perrin, Stephane Roudeau, Asuncion Carmona, Florelle Domart, Jennifer D Petersen, Sylvain Bohic, Yang Yang, Peter Cloetens, Richard Ortega
Zinc and copper ions can modulate the activity of glutamate-receptors. However, labile zinc and copper ions likely represent only the tip of the iceberg and other neuronal functions are suspected for these metals in their bound state. We performed synchrotron X-ray fluorescence imaging with 30 nm resolution to image total biometals in dendrites and spines from hippocampal neurons. We found that zinc is distributed all along the dendrites while copper is mainly pinpointed within the spines. In spines, zinc content is higher within the spine head while copper is higher within the spine neck...
March 21, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28321633/dietary-intake-of-minerals-vitamins-and-trace-elements-among-geriatric-population-in-india
#10
Aakriti Gupta, Preetika Khenduja, Ravindra Mohan Pandey, Hem Chandra Sati, Nighat Yaseen Sofi, Umesh Kapil
The geriatric population is at a high risk of developing deficiencies of essential micronutrients such as minerals, vitamins, and trace elements and their related deficiency signs and symptoms. Scarce data is available on the dietary intake of essential micronutrients among geriatric subjects in India. Hence, to fill the gap in the existing knowledge, a community-based cross-sectional study was conducted during 2015-2016 in District Nainital, Uttarakhand State, India. A total of 255 geriatric subjects were enrolled from 30 clusters (villages) identified by using population proportionate to size sampling methodology...
March 20, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28321603/similarities-and-differences-of-copper-and-zinc-cations-binding-to-biologically-relevant-peptides-studied-by-vibrational-spectroscopies
#11
Alicia Schirer, Youssef El Khoury, Peter Faller, Petra Hellwig
GHK and DAHK are biological peptides that bind both copper and zinc cations. Here we used infrared and Raman spectroscopies to study the coordination modes of both copper and zinc ions, at pH 6.8 and 8.9, correlating the data with the crystal structures that are only available for the copper-bound form. We found that Cu(II) binds to deprotonated backbone (amidate), the N-terminus and N(π) of the histidine side chain, in both GHK and DAHK, at pH 6.8 and 8.9. The data for the coordination of zinc at pH 6.8 points to two conformers including both nitrogens of a histidine residue...
March 20, 2017: Journal of Biological Inorganic Chemistry: JBIC
https://www.readbyqxmd.com/read/28318693/the-influence-of-dual-substrate-layer-extensive-green-roofs-on-rainwater-runoff-quantity-and-quality
#12
Xiaoou Wang, Yimei Tian, Xinhua Zhao
This study investigates the ability of dual-substrate-layer extensive green roofs to retain rainwater and reduce pollutant leaching. The substrates in dual-substrate-layer green roofs consist of an upper organic nutrition layer for plant growth and a lower inorganic adsorption layer for water retention and pollutant reduction. One traditional single-substrate-layer extensive green roof was built for comparison with dual-substrate-layer green roofs. During the experimental period, dual-substrate-layer green roofs supported better natural vegetation growth, with coverage exceeding 90%, while the coverage in single-substrate-layer green roof was over 80%...
March 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28316042/serum-level-of-zinc-and-copper-in-sudanese-women-with-polycystic-ovarian-syndrome
#13
Manal E Sharif, Isahg Adam, Mohamed A Ahmed, Duria A Rayis, Hamdan Z Hamdan
The study aimed to evaluate the serum level of zinc and copper in women with polycystic ovarian syndrome (PCOS). A case-control study was conducted at Saad Abualila infertility center (Khartoum, Sudan). The cases were women who had a PCOS based on Rotterdam criteria. The controls were infertile women with no evidence of PCOS. The socio-demographic characteristics and medical history data were gathered using questionnaires. Zinc and copper levels were measured using atomic absorption spectrophotometer. While there was no difference in zinc and copper levels between the two groups (50 women in each arm), mean (SD) of body mass index (BMI) was significantly higher in women with PCOS compared to the controls [28...
March 18, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28306527/investigation-of-the-role-of-%C3%AE-lipoic-acid-on-fatty-acids-profile-some-minerals-zinc-copper-iron-and-antioxidant-activity-against-aluminum-induced-oxidative-stress-in-the-liver-of-male-rats
#14
Zafer Sahin, Ahmet Ozkaya, Okkes Yilmaz, Abdurrauf Yuce, Mehmet Gunes
BACKGROUND: We have investigated the effects of α-lipoic acid (LA), a powerful antioxidant, on the fatty acid (FA) profiles, aluminum accumulation, antioxidant activity and some minerals such as zinc, copper and iron against aluminum chloride (AlCl3)-induced oxidative stress in rat liver. METHODS: Twenty-eight male Wistar rats were divided into four groups as control, LA, AlCl3 and LA+AlCl3. For 30 days, LA was intraperitoneally administrated (50 mg/kg) and AlCl3 was given via orogastric gavage (1600 ppm) every other day...
March 17, 2017: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/28303424/inherited-disorders-of-transition-metal-metabolism-an-update
#15
REVIEW
Peter T Clayton
Elements with a biological role include six trace transition metals: manganese, iron, cobalt, copper, zinc and molybdenum. Transition metals participate in group transfer reactions such as glycosylation and phosphorylation and those that can transfer an electron by alternating between two redox states such as iron (3+/2+) and copper (2+/1+) are also very important in biological redox reactions including the reduction of molecular oxygen and the transport of oxygen. However, these trace metals are also potentially toxic, generating reactive oxygen species through Fenton chemistry...
March 16, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28303360/modulation-of-linoleic-acid-binding-properties-of-human-serum-albumin-by-divalent-metal-cations
#16
Ekaterina L Nemashkalova, Eugene A Permyakov, Sergei E Permyakov, Ekaterina A Litus
Human serum albumin (HSA) is an abundant multiligand carrier protein, linked to progression of Alzheimer's disease (AD). Blood HSA serves as a depot of amyloid β (Aβ) peptide. Aβ peptide-buffering properties of HSA depend on interaction with its ligands. Some of the ligands, namely, linoleic acid (LA), zinc and copper ions are involved into AD progression. To clarify the interplay between LA and metal ion binding to HSA, the dependence of LA binding to HSA on Zn(2+), Cu(2+), Mg(2+) and Ca(2+) levels and structural consequences of these interactions have been explored...
March 16, 2017: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
https://www.readbyqxmd.com/read/28303048/studies-on-physico-chemical-and-cooking-characteristics-of-rice-bean-varieties-grown-in-ne-region-of-india
#17
Rejaul Hoque Bepary, D D Wadikar, Seuji Borah Neog, P E Patki
Rice bean (Vigna umbellata) is grown in South and Southeast Asia, and the bean has gained importance due to its nutritional strength in terms of dietary fiber, quality protein and minerals. In current study, the nutritional and functional components, cooking and thermo-gravimetric properties of eleven rice bean varieties from NE India were investigated. Results revealed that the major nutrients among the varieties ranged as follows: 54.21-60.49% carbohydrates, 15.64-21.60% protein, 1.22-2.3% fat, 5.53-6.56% crude fibre, 3...
March 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28299516/effects-of-nitrogen-and-water-addition-on-trace-element-stoichiometry-in-five-grassland-species
#18
Jiangping Cai, Jacob Weiner, Ruzhen Wang, Wentao Luo, Yongyong Zhang, Heyong Liu, Zhuwen Xu, Hui Li, Yuge Zhang, Yong Jiang
A 9-year manipulative experiment with nitrogen (N) and water addition, simulating increasing N deposition and changing precipitation regime, was conducted to investigate the bioavailability of trace elements, iron (Fe), manganese (Mn), copper (Cu), and zinc (Zn) in soil, and their uptake by plants under the two environmental change factors in a semi-arid grassland of Inner Mongolia. We measured concentrations of trace elements in soil and in foliage of five common herbaceous species including 3 forbs and 2 grasses...
March 15, 2017: Journal of Plant Research
https://www.readbyqxmd.com/read/28293880/catalytic-amyloid-fibrils-that-bind-copper-to-activate-oxygen
#19
Alex Sternisha, Olga Makhlynets
Amyloid-like fibrils assembled from de novo designed peptides lock ligands in a conformation optimal for metal binding and catalysis in a manner similar to how metalloenzymes provide proper coordination environment through fold. These supramolecular assemblies efficiently catalyze p-nitrophenyl ester hydrolysis in the presence of zinc and phenol oxidation by dioxygen in the presence of copper. The resulting heterogeneous catalysts are inherently switchable, as addition and removal of the metal ions turns the catalytic activity on and off, respectively...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28291249/analysis-of-sod1-mutations-in-a-chinese-population-with-amyotrophic-lateral-sclerosis-a-case-control-study-and-literature-review
#20
QianQian Wei, QingQing Zhou, YongPing Chen, RuWei Ou, Bei Cao, YaQian Xu, Jing Yang, Hui-Fang Shang
Although the copper/zinc superoxide dismutase-1 (SOD1) gene has been identified in both familial ALS (FALS) and sporadic ALS (SALS), it has rarely been studied in Chinese patients with ALS, and there are few studies with large samples. This study sought to assess the prevalence of SOD1 mutations in Chinese ALS patients. We screened a cohort of 499 ALS patients (487 SALS and 12 FALS) from the Department of Neurology at the West China Hospital of Sichuan University and analyzed all coding exons of SOD1 by Sanger sequencing...
March 14, 2017: Scientific Reports
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