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https://www.readbyqxmd.com/read/28445108/manganese-provision-in-parenteral-nutrition-an-update
#1
Callum Livingstone
Manganese (Mn) is an essential micronutrient required for the activity of metalloenzymes. It is an essential component of parenteral nutrition (PN), but requirements are low. Mn status is difficult to assess, with the commonest method being measurement of its concentration in whole blood. This method has limitations, including artifactually high concentrations resulting from contamination of specimen tubes. Mn toxicity is a well-recognized complication of PN, the risk of which increases if there is cholestasis or if the patient has received high doses...
April 1, 2017: Nutrition in Clinical Practice
https://www.readbyqxmd.com/read/28444499/hair-trace-element-and-electrolyte-content-in-women-with-natural-and-in-vitro-fertilization-induced-pregnancy
#2
Anatoly V Skalny, Alexey A Tinkov, Irina Voronina, Olga Terekhina, Margarita G Skalnaya, Yulia Kovas
The objective of the present study was to perform comparative analysis of hair trace element content in women with natural and in vitro fertilization (IVF)-induced pregnancy. Hair trace element content in 33 women with IVF-induced pregnancy and 99 age- and body mass index-matched control pregnant women (natural pregnancy) was assessed using inductively coupled plasma mass spectrometry. The results demonstrated that IVF-pregnant women are characterized by significantly lower hair levels of Cu, Fe, Si, Zn, Ca, Mg, and Ba at p < 0...
April 25, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28443587/role-of-trace-elements-for-oxidative-status-and-quality-of-human-sperm
#3
Galina Nenkova, Lubomir Petrov, Albena Alexandrova
BACKGROUND: Oxidative stress affects negatively the sperm quality. For maintaining the pro/antioxidative balance, some metal ions (e.g. copper, zinc, iron, selenium), which are co-factors of the antioxidant enzymes, are essential. However, iron and copper could act as prooxidants inducing oxidative damage of spermatozoa. AIMS: This study aims to reveal a possible correlation between the concentrations of some metal ions (iron, copper, zinc, and selenium) in human seminal plasma, oxidative stress, assessed by malondialdehyde (MDA) and total glutathione (tGSH) levels, and semen quality, assessed by the parameters count, motility, and morphology...
April 6, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/28441332/pregnant-sheep-in-a-farm-environment-did-not-develop-anaemia
#4
Gabrielle C Musk, Amanda James, Matthew W Kemp, Sara Ritchie, Andrew Ritchie, Michael Laurence
The aim of this study was to document the haematological profile of pregnant ewes throughout gestation. Sheep were divided into three groups (n = 8 per group): non-pregnant, singleton, or twin pregnancy. Blood samples were collected every 14 days from day 55 of gestation for haemoglobin concentration; packed cell volume; total protein; and albumin concentration. On days 55 and 125 of gestation blood was collected for trace element estimation: soluble copper and zinc; glutathione peroxidase (GSHPx); and methylmalonic acid (MMA)...
April 25, 2017: Animals: An Open Access Journal From MDPI
https://www.readbyqxmd.com/read/28436761/androgen-and-estrogen-shifts-in-men-before-and-after-bariatric-surgery-and-links-to-vitamins-and-trace-elements
#5
Alberto Rosenblatt, Joel Faintuch, Ivan Cecconello
Androgens and estrogens play a key role regarding sexual life and reproduction. Along with hypotestosteronemia, obese men exhibit a 2-fold increase in estradiol concentration, adversely infl uencing these parameters. Estrogens and adipokines also infl uence bone metabolism, exerting a direct effect on vitamin D, calcium homeostasis and bone health. Bariatric procedures normalize some sex hormones, and may reverse several obesity-related conditions. Estrogens levels may remain elevated postoperatively, and despite its protective effect on the skeleton, bariatric patients are more prone to fractures when compared to the general population...
April 24, 2017: International Journal for Vitamin and Nutrition Research. Journal International de Vitaminologie et de Nutrition
https://www.readbyqxmd.com/read/28436486/muscle-wasting-and-cachexia-in-heart-failure-mechanisms-and-therapies
#6
REVIEW
Stephan von Haehling, Nicole Ebner, Marcelo R Dos Santos, Jochen Springer, Stefan D Anker
Body wasting is a serious complication that affects a large proportion of patients with heart failure. Muscle wasting, also known as sarcopenia, is the loss of muscle mass and strength, whereas cachexia describes loss of weight. After reaching guideline-recommended doses of heart failure therapies, the most promising approach to treating body wasting seems to be combined therapy that includes exercise, nutritional counselling, and drug treatment. Nutritional considerations include avoiding excessive salt and fluid intake, and replenishment of deficiencies in trace elements...
April 24, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28436326/evaluation-and-characterization-of-nutritive-properties-of-the-jelly-ear-culinary-medicinal-mushroom-auricularia-auricula-judae-agaricomycetes-from-nigeria
#7
Reginald Chibueze Ohiri, Essien Eka Bassey
This study investigated the nutritive properties of the culinary-medicinal mushroom Auricularia auricula- judae. From the analysis, among the major minerals, potassium was found in the highest concentration, with a value of 172.03 ± 8.62 mg/kg, whereas manganese had the highest concentration among trace elements, with a value of 1.66 ± 0.11 mg/kg. Glutamic acid was the amino acid detected in the largest amounts in this study, with a value of 10.09 ± 1.86 mg/kg. Although glutamine and asparagine were not detected in this mushroom, cysteine and methionine had the lowest concentrations, with values of 0...
2017: International Journal of Medicinal Mushrooms
https://www.readbyqxmd.com/read/28435697/calcium-phosphates-and-silicon-exploring-methods-of-incorporation
#8
Ana I Rodrigues, Rui L Reis, Clemens A van Blitterswijk, Isabel B Leonor, Pamela Habibović
BACKGROUND: Bioinorganics have been explored as additives to ceramic bone graft substitutes with the aim to improve their performance in repair and regeneration of large bone defects. Silicon (Si), an essential trace element involved in the processes related to bone formation and remodeling, was shown not only to enhance osteoblasts proliferation but also to stimulate the differentiation of mesenchymal stem cells (MSCs) and preosteoblasts into the osteogenic lineage. In this study, the added value of Si to calcium phosphate (CaP) coatings was evaluated...
2017: Biomaterials Research
https://www.readbyqxmd.com/read/28433060/enhanced-photoresponsive-polyethyleneimine-citric-acid-co-carbonized-dots-for-facile-and-selective-sensing-and-intracellular-imaging-of-cobalt-ions-at-physiologic-ph
#9
Wen-Sheng Zou, Qing-Chun Zhao, Jun Zhang, Xiao-Ming Chen, Xiu-Fang Wang, Lin Zhao, Shao-Hua Chen, Ya-Qin Wang
Whether as an important biological element or as a radioactive source/medicine, the monitoring of trace levels of cobalt ions (Co) has become a non-negligible factor for human health and green environment. Current technologies for the detection of Co are cost-expensive and time-consuming, and require cumbersome sample pretreatment process. Herein a novel sensing platform has been developed for Co detection based on the quenching of the enhanced fluorescence signal of polyamine functionalized C-dots. Amine groups at the surface of the C-dots can capture Zn(2+)/Cd(2+) to form coordination compound, which can inhibit the photoinduced electron transfer pathways of C-dots and then induce the fluorescence enhancement of the C-dots by ∼80% margin...
June 1, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28432526/erratum-to-how-trace-element-levels-of-public-drinking-water-affect-body-composition-in-turkey
#10
Ihsan Cetin, Mahmut Tahir Nalbantcilar, Kezban Tosun, Aydan Nazik
No abstract text is available yet for this article.
April 21, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28431331/dielectric-properties-of-a-novel-colloidal-oral-matrix-drug-carrier
#11
Alexander Vol, Orna Gribova, Oded Shamir, Evgeniya Levy, Paul Ben Ishai, Anna Greenbaum Gutina, Yuri Feldman
Dielectric Spectroscopy (DS) was employed to study a novel oral matrix carrier (OMC), composed from silica nano-particles, polysaccharides, biopolymers and natural oils. This composition self-orders to a multi hierarchal structure and as such is amenable to be studied by techniques such as DS. The dielectric properties were measured in the frequency range 1MHz-1GHz and a temperature range 10°C-45°C. The results were dominated by two relaxation processes following CC relaxation and having relaxation times that are Arrhenius in nature...
April 12, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28426946/quantification-of-rubidium-as-a-trace-element-in-beef-using-laser-induced-breakdown-spectroscopy
#12
Y Dixit, Maria P Casado-Gavalda, R Cama-Moncunill, Maria Markiewicz-Keszycka, X Cama-Moncunill, P J Cullen, Carl Sullivan
This study evaluates the potential of laser induced breakdown spectroscopy (LIBS) coupled with chemometrics to develop a quantification model for rubidium (Rb) in minced beef. A LIBSCAN 150 system was used to collect LIBS spectra of minced beef samples. Beef liver was used to spike the Rb levels in minced beef. All samples were dried, powdered and pelleted using a hydraulic press. Measurements were conducted by scanning 100 different locations with an automated XYZ sample chamber. Partial least squares regression (PLSR) was used to develop the calibration model, yielding a calibration coefficient of determination (Rc(2)) of 0...
April 1, 2017: Meat Science
https://www.readbyqxmd.com/read/28425532/emerging-tellurium-nanostructures-controllable-synthesis-and-their-applications
#13
REVIEW
Zhen He, Yuan Yang, Jian-Wei Liu, Shu-Hong Yu
Tellurium (Te) is a rare element in trace amounts of about one part per billion, comparable to that of platinum and ranked 75th in the abundance of the elements in the earth crust. Te nanostructures, as narrow bandgap semiconductors, have numerous potential applications in the fabrication of many modern devices. The past decades have witnessed an explosion in new strategies for synthesizing diverse emerging Te nanostructures with controlled compositions, sizes, shapes, and structures. Their structure-determined nature makes functional Te nanomaterials an attractive candidate for modern applications...
April 20, 2017: Chemical Society Reviews
https://www.readbyqxmd.com/read/28424000/heavy-metals-and-pahs-in-canned-fish-supplies-on-the-serbian-market
#14
Nikolina J Novakov, Željko A Mihaljev, Brankica D Kartalović, Bojan J Blagojević, Jelana M Petrović, Miroslav A Ćirković, Dragan R Rogan
The aim of this study was to determine the level of heavy metals and PAHs in 57 samples of canned tuna, 25 samples of canned sardines and 16 samples of canned smoked sprouts, collected from supermarkets in Serbia. Heavy metal levels (lead, cadmium, mercury, arsenic, iron, copper and zinc) were determined using an ICP-MS method. Sixteen analyzed PAHs were determined using a GC-MS method. The trace elements in canned fish were in the range (mg kg(-1)) of 0.01-0.28 for lead, 0.003-0.08 for cadmium, 0.007-0.64 for mercury, 0...
April 20, 2017: Food Additives & Contaminants. Part B, Surveillance
https://www.readbyqxmd.com/read/28422987/systematic-review-and-meta-analysis-shows-a-specific-micronutrient-profile-in-people-with-down-syndrome-lower-blood-calcium-selenium-and-zinc-higher-red-blood-cell-copper-and-zinc-and-higher-salivary-calcium-and-sodium
#15
Amene Saghazadeh, Maryam Mahmoudi, Atefeh Dehghani Ashkezari, Nooshin Oliaie Rezaie, Nima Rezaei
Different metabolic profiles as well as comorbidities are common in people with Down Syndrome (DS). Therefore it is relevant to know whether micronutrient levels in people with DS are also different. This systematic review was designed to review the literature on micronutrient levels in people with DS compared to age and sex-matched controls without DS. We identified sixty nine studies from January 1967 to April 2016 through main electronic medical databases PubMed, Scopus, and Web of knowledge. We carried out meta-analysis of the data on four essential trace elements (Cu, Fe, Se, and Zn), six minerals (Ca, Cl, K, Mg, Na, and P), and five vitamins (vitamin A, B9, B12, D, and E)...
2017: PloS One
https://www.readbyqxmd.com/read/28421430/imbalance-of-morphofunctional-responses-of-jurkat-t-lymphoblasts-at-short-term-culturing-with-relief-zinc-or-copper-containing-calcium-phosphate-coating-on-titanium
#16
L S Litvinova, V V Shupletsova, N A Dunets, O G Khaziakhmatova, K A Yurova, M Yu Khlusova, G B Slepchenko, E G Cherempey, Yu P Sharkeev, E G Komarova, M B Sedelnikova, I A Khlusov
Morphofunctional response of Jurkat T cells that were cultured for 24 h on substrates prepared from commercially pure titanium with relief microarc bilateral calcium phosphate coating containing copper or zinc was studied. Changes in the concentration of essential trace elements contained in this coating can cause significant imbalance of molecular processes of differentiation, secretion, apoptosis, and necrosis and reduce tumor cell survival.
January 2017: Doklady. Biochemistry and Biophysics
https://www.readbyqxmd.com/read/28416730/early-accretion-of-water-and-volatile-elements-to-the-inner-solar-system-evidence-from-angrites
#17
Adam R Sarafian, Erik H Hauri, Francis M McCubbin, Thomas J Lapen, Eve L Berger, Sune G Nielsen, Horst R Marschall, Glenn A Gaetani, Kevin Righter, Emily Sarafian
Inner Solar System bodies are depleted in volatile elements relative to chondrite meteorites, yet the source(s) and mechanism(s) of volatile-element depletion and/or enrichment are poorly constrained. The timing, mechanisms and quantities of volatile elements present in the early inner Solar System have vast implications for diverse processes, from planetary differentiation to the emergence of life. We report major, trace and volatile-element contents of a glass bead derived from the D'Orbigny angrite, the hydrogen isotopic composition of this glass bead and that of coexisting olivine and silicophosphates, and the (207)Pb-(206)Pb age of the silicophosphates, 4568 ± 20 Ma...
May 28, 2017: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/28416223/study-on-emission-of-hazardous-trace-elements-in-a-350%C3%A2-mw-coal-fired-power-plant-part-2-arsenic-chromium-barium-manganese-lead
#18
Shilin Zhao, Yufeng Duan, Lei Chen, Yaning Li, Ting Yao, Shuai Liu, Meng Liu, Jianhong Lu
Hazardous Trace elements (HTEs) emitted from coal combustion has raised widespread concern. Studies on the emission characteristics of five HTEs, namely arsenic (As), chromium (Cr), barium (Ba), manganese (Mn), lead (Pb) at three different loads (100%, 83%, 71% output) and different coal types were performed on a 350 MW coal-fired power plant equipped with SCR, ESP + FF, and WFGD. HTEs in the flue gas at the inlet/outlet of each air pollution control device (APCD) were sampled simultaneously based on US EPA Method 29...
April 14, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28415449/complementary-approaches-for-the-evaluation-of-biocompatibility-of-90-y-labeled-superparamagnetic-citric-acid-fe-er-3o4-coated-nanoparticles
#19
Bratislav Antic, Marko Boskovic, Jasmina Nikodinovic-Runic, Yue Ming, Hongguo Zhang, Emil S Bozin, Drina Janković, Vojislav Spasojevic, Sanja Vranjes-Djuric
Magnetic nanoparticles (MNPs) are of immense interest for diagnostic and therapeutic applications in medicine. Design and development of new iron oxide-based MNPs for such applications is of rather limited breadth without reliable and sensitive methods to determine their levels in body tissues. Commonly used methods, such as ICP, are quite problematic, due to the inability to decipher the origin of the detected iron, i.e. whether it originates from the MNPs or endogenous from tissues and bodily fluids. One of the approaches to overcome this problem and to increase reliability of tracing MNPs is to partially substitute iron ions in the MNPs with Er...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28415163/fragmented-qrs-and-abnormal-creatine-kinase-mb-are-predictors-of-coronary-artery-disease-in-patients-with-angina-and-normal-electrocardiographys
#20
Jung Joo Lee, Jae Hoon Lee, Jin Woo Jeong, Jun Young Chung
Background/Aims: Patients with symptoms of coronary artery disease (CAD) often display normal tracings or only nonspecific changes on electrocardiography (ECG). The aim of this study was to explore strategic elements of the ECG and other potential factors that are predictive of CAD in this scenario. Methods: This was an observational study of 142 patients with the chief complaint of chest pain, each of whom presented with a normal ECG and was subjected to emergency coronary angiography (CAG)...
April 17, 2017: Korean Journal of Internal Medicine
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