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Calcium magnesium

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https://www.readbyqxmd.com/read/28091750/ectomycorrhizal-fungal-diversity-associated-with-endemic-tristaniopsis-spp-myrtaceae-in-ultramafic-and-volcano-sedimentary-soils-in-new-caledonia
#1
Muhammad Waseem, Marc Ducousso, Yves Prin, Odile Domergue, Laure Hannibal, Clarisse Majorel, Philippe Jourand, Antoine Galiana
New Caledonian serpentine (ultramafic) soils contain high levels of toxic heavy metals, in particular nickel, (up to 20 g kg(-1)) and are deficient in essential elements like carbon, nitrogen and phosphorus while having a high magnesium/calcium ratio. Although previous studies showed that ectomycorrhizal symbioses could play an important role in the adaptation of the endemic plants to ultramafic soils (FEMS Microbiol Ecol 72:238-49, 2010), none of them have compared the diversity of microbial communities from ultramafic vs non-ultramafic soils in New Caledonia...
January 13, 2017: Mycorrhiza
https://www.readbyqxmd.com/read/28090471/hair-zinc-level-analysis-and-correlative-micronutrients-in-children-presenting-with-malnutrition-and-poor-growth
#2
Tae Hwan Han, Jin Lee, Yong Joo Kim
PURPOSE: Zinc deficiency can induce serious clinical problems in the gastrointestinal (GI) system and immune system and can affect growth and development. It is more severe in younger patients. Chronic zinc deficiency is reflected more precisely in hair than in serum. We studied hair zinc levels and other hair and serum micronutrients in chronic malnourished children to identify which micronutrients are affected or correlated with the other ones. METHODS: Hair mineral analyses were performed in 56 children (age, 1-15 years) presenting with malnutrition, poor growth, poor appetite, anorexia, with/without other GI symptoms (diarrhea, abdominal pain, constipation) from August 2012 to March 2015...
December 2016: Pediatric Gastroenterology, Hepatology & Nutrition
https://www.readbyqxmd.com/read/28089597/magnesium-and-calcium-ions-differentially-affect-human-serine-racemase-activity-and-modulate-its-quaternary-equilibrium-toward-a-tetrameric-form
#3
Stefano Bruno, Marilena Margiotta, Francesco Marchesani, Gianluca Paredi, Valentina Orlandi, Serena Faggiano, Luca Ronda, Barbara Campanini, Andrea Mozzarelli
Serine racemase is the pyridoxal 5'-phosphate dependent enzyme that catalyzes both production and catabolism of d-serine, a co-agonist of the NMDA glutamate receptors. Mg(2+), or, alternatively, Ca(2+), activate human serine racemase by binding both at a specific site and - as ATP-metal complexes - at a distinct ATP binding site. We show that Mg(2+) and Ca(2+) bind at the metal binding site with a 4.5-fold difference in affinity, producing a similar thermal stabilization and partially shifting the dimer-tetramer equilibrium in favour of the latter...
January 9, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28074329/dietary-adequacy-of-egyptian-children-with-autism-spectrum-disorder-compared-to-healthy-developing-children
#4
Nagwa A Meguid, Mona Anwar, Geir Bjørklund, Adel Hashish, Salvatore Chirumbolo, Maha Hemimi, Eman Sultan
Although the etiology and pathology of autism spectrum disorder (ASD) is still poorly understood, a number of environmental, anthropological, neurobiological and genetic factors have been related to the pathophysiology of ASD, even the impact of oxidative stress response related to the environment and nutrition intake. Usual recommended dietary habits are based on the combination of behavioral and dietary or nutraceutical interventions together with pharmacotherapy. Investigations about a reliable relationship between diet and ASD are still lacking...
January 10, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28073210/the-importance-of-citrates-in-treatment-and-prophylaxis-of-calcium-oxalate-urinary-stones
#5
Michele Barbera, Andreas Tsirgiotis, Mauro Barbera, Quintino Paola
About 10% of the people is the subject of an episode of kidney stones during their lifetime, about 70% of these people undergoes relapses. About 80% of the urinary stones contains calcium, of wich 80% is formed of calcium oxalate, in pure form or associated with calcium phosphate. Therefore we can saythat in most cases (about 65%) the urinary stones are composedof calcium oxalate. Use of supplements of potassium citrate and magnesium citrate can help in the prevention of kidney stones of calcium oxalate, but mostly they can be used in the days before a shockwaves lithotripsy treatment to make the stones more fragile to the effect of the shock waves...
December 30, 2016: Archivio Italiano di Urologia, Andrologia
https://www.readbyqxmd.com/read/28070203/a-pilot-observational-study-on-magnesium-and-calcium-imbalance-in-elderly-patients-with-acute-aortic-dissection
#6
E Vianello, E Dozio, A Barassi, G Sammarco, L Tacchini, M M Marrocco-Trischitta, S Trimarchi, M M Corsi Romanelli
BACKGROUND: Magnesium (Mg) and calcium (Ca) are the principal essential elements involved in endothelial cell homeostasis. Extracellular changes in the levels of either alter endothelial contraction and dilatation. Consequently Mg and Ca imbalance is associated with a high risk of endothelial dysfunction, the main process observed during acute aortic dissection (AAD); in this clinical condition, which mainly affects elderly men, smooth muscle cell alterations lead to intimal tears, creating a false new lumen in the media of the aorta...
2017: Immunity & Ageing: I & A
https://www.readbyqxmd.com/read/28069910/primary-aldosteronism-not-just-about-potassium-and-blood-pressure
#7
T H Toh, C V Tong, H C Chong
No abstract text is available yet for this article.
January 9, 2017: QJM: Monthly Journal of the Association of Physicians
https://www.readbyqxmd.com/read/28066927/dialysate-composition-for-hemodialysis-changes-and-changing-risk
#8
Rita L McGill, Daniel E Weiner
Dialysate composition is a critical aspect of the hemodialysis prescription. Despite this, trial data are almost entirely lacking to help guide the optimal dialysate composition. Often, the concentrations of key components are chosen intuitively, and dialysate composition may be determined by default based on dialysate manufacturer specifications or hemodialysis facility practices. In this review, we examine the current epidemiological evidence guiding selection of dialysate bicarbonate, calcium, magnesium, and potassium, and identify unresolved issues for which pragmatic clinical trials are needed...
January 8, 2017: Seminars in Dialysis
https://www.readbyqxmd.com/read/28063169/progress-in-the-study-of-bioluminescent-earthworms
#9
Natalja S Rodionova, Emilia Rota, Aleksandra S Tsarkova, Valentin N Petushkov
Even though bioluminescent oligochaetes rarely catch people's eyes due to their secretive lifestyle, glowing earthworms sighting reports have come from different areas on all continents except Antarctica. A major breakthrough in the research of earthworm bioluminescence occurred in the 1960s with the studies of the North American Diplocardia longa. Comparative studies conducted on 13 earthworm species belonging to six genera showed that N-isovaleryl-3-aminopropanal (Diplocardia luciferin) is the common substrate for bioluminescence in all examined species, while luciferases appeared to be responsible for the color of bioluminescence...
January 7, 2017: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/28058666/analysis-of-trace-elements-in-rat-bronchoalveolar-lavage-fluid-by-inductively-coupled-plasma-mass-spectrometry
#10
Wajhul Qamar, Abdul Rahman Al-Ghadeer, Raisuddin Ali, Hatem A Abuelizz
The main objective was to determine the elemental profile of the lung lining fluid of rats which are used as model animals in various experiments. Lung lining fluid elemental constitution obtained after bronchoalveolar lavage fluid (BALF) was analyzed by inductively coupled plasma mass spectrometry (ICP-MS) to determine the biological trace elements along with calcium and magnesium. BALF was collected from healthy rats using a tracheal cannula. However, cells in BALF were counted to monitor any underlying inflammatory lung condition...
January 5, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28057169/difference-in-the-dissolution-behaviors-of-tablets-containing-polyvinylpolypyrrolidone-pvpp-depending-on-pharmaceutical-formulation-after-storage-under-high-temperature-and-humid-conditions
#11
Yoh Takekuma, Haruka Ishizaka, Masato Sumi, Yuki Sato, Mitsuru Sugawara
PURPOSE: Storage under high temperature and humid conditions has been reported to decrease the dissolution rate for some kinds of tablets containing polyvinylpolypyrrolidone (PVPP) as a disintegrant. The aim of this study was to elucidate the properties of pharmaceutical formulations with PVPP that cause a decrease in the dissolution rate after storage under high temperature and humid conditions by using model tablets with a simple composition. METHODS: Model tablets, which consisted of rosuvastatin calcium or 5 simple structure compounds, salicylic acid, 2-aminodiphenylmethane, 2-aminobiphenyl, 2-(p-tolyl)benzoic acid or 4...
October 2016: Journal of Pharmacy & Pharmaceutical Sciences: a Publication of the Canadian Society for Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28056273/-study-on-the-contribution-rate-of-follow-up-formula-to-the-nutrient-intake-of-infants-and-young-children-aged-7-24-months-in-china
#12
H Z Li, H X Jia, D Liang, T T Deng, L T Niu, J H Han
Objective: To determine the contribution of follow-up formula (FUF) to the nutrient intake of 7-24-month-old infants and young children. Methods: The cluster random sampling method and the convenience sampling method were used in combination, and geographic and economic factors were taken into consideration. Four areas of China (Beijing, Hebei, Guangxi, Guangdong) were selected, with 120 infants chosen from each of these areas (half of which were 7-12 months old, and half were 13-24 months old). A dietary survey was completed by a continuous 24-hour weighing method over two days...
January 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28052525/daily-variability-in-serum-levels-of-calciprotein-particles-and-their-association-with-mineral-metabolism-parameters-a-cross-sectional-pilot-study
#13
Hodaka Yamada, Makoto Kuro-O, San-E Ishikawa, Shunsuke Funazaki, Ikuyo Kusaka, Masafumi Kakei, Kazuo Hara
BACKGROUND: Calciprotein particles (CPPs), colloidal protein-mineral nanoparticles composed of solid-phase calcium phosphate and serum protein fetuin-A found in blood, are emerging as a novel component of chronic kidney disease-mineral and bone disorder (CKD-MBD). In this study, we examined daily variations in CPPs as well as their association with mineral metabolism parameters in normal individuals and early-stage CKD patients. METHODS: Twenty subjects (10 healthy adults, 10 diabetic patients) were enrolled...
January 4, 2017: Nephrology
https://www.readbyqxmd.com/read/28049663/reproducibility-of-urinary-biomarkers-in-multiple-24-h-urine-samples
#14
Qi Sun, Kimberly A Bertrand, Adrian A Franke, Bernard Rosner, Gary C Curhan, Walter C Willett
BACKGROUND: Limited knowledge regarding the reproducibility of biomarkers in 24-h urine samples has hindered the collection and use of the samples in epidemiologic studies. OBJECTIVE: We aimed to evaluate the reproducibility of various markers in repeat 24-h urine samples. DESIGN: We calculated intraclass correlation coefficients (ICCs) of biomarkers measured in 24-h urine samples that were collected in 3168 participants in the NHS (Nurses' Health Study), NHSII (Nurses' Health Study II), and Health Professionals Follow-Up Study...
January 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28033103/the-sublethal-effects-of-2-4-dichlorophenoxy-acetic-acid-2-4-d-on-narrow-clawed-crayfish-astacus-leptodactylus-eschscholtz-1823
#15
A Çağlan Karasu Benli, Duygu Şahin, Rabia Sarıkaya, Burcu Koçak Memmi, Aylin Sepici Dinçel
2,4-D is a widely used phenoxy herbicide, potentially toxic to humans and biota. The objective of the present study was to reveal short term sublethal effects of 2,4-D on narrow-clawed freshwater crayfish (Astacus leptodactylus Eschscholtz, 1823), based on histology, total haemocyte counts, selected haemolymph parameters, and oxidative stress parameters. In the laboratory conditions crayfish specimens were exposed to 9 mg L-1 of 2,4-D for one week. Experiments were conducted under semi-static conditions in 20 L-capacity aquaria where 10 freshwater crayfish were stocked per aquarium...
December 1, 2016: Arhiv za Higijenu Rada i Toksikologiju
https://www.readbyqxmd.com/read/28030601/calcium-mass-balance-during-citrate-hemodialysis-a-randomized-controlled-trial-comparing-normal-and-low-ionized-calcium-target-ranges
#16
Jakob Gubensek, Alesa Orsag, Rafael Ponikvar, Jadranka Buturovic-Ponikvar
BACKGROUND: Regional citrate anticoagulation (RCA) during hemodialysis interferes with calcium homeostasis. Optimal ionized calcium (iCa) target range during RCA and consequent calcium balance are unknown. METHODS: In a randomized controlled trial (ACTRN12613001029785) 30 chronic hemodialysis patients were assigned to normal (1.1-1.2 mmol/) or low (0.95-1.05 mmol/l) iCa target range during a single hemodialysis with RCA. The primary outcome was calcium mass balance during the procedure, using a partial spent dialysate collection method; magnesium mass balance was also measured...
2016: PloS One
https://www.readbyqxmd.com/read/28027490/magnesium-alloys-and-graphite-wastes-encapsulated-in-cementitious-materials-reduction-of-galvanic-corrosion-using-alkali-hydroxide-activated-blast-furnace-slag
#17
D Chartier, B Muzeau, L Stefan, J Sanchez-Canet, C Monguillon
Magnesium alloys and graphite from spent nuclear fuel have been stored together in La Hague plant. The packaging of these wastes is under consideration. These wastes could be mixed in a grout composed of industrially available cement (Portland, calcium aluminate…). Within the alkaline pore solution of these matrixes, magnesium alloys are imperfectly protected by a layer of Brucite resulting in a slow corrosion releasing hydrogen. As the production of this gas must be considered for the storage safety, and the quality of wasteform, it is important to select a cement matrix capable of lowering the corrosion kinetics...
December 15, 2016: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28012395/regulatory-mechanism-of-mineral-balanced-deep-sea-water-on-hypocholesterolemic-effects-in-hepg2-hepatic-cells
#18
Kyu-Shik Lee, Yun-Suk Kwon, Soyoung Kim, Deok-Soo Moon, Hyeon Ju Kim, Kyung-Soo Nam
Several previous studies have shown the benefits of deep sea water (DSW) in lipid metabolism. However, the effects of DSW on cellular cholesterol accumulation and synthesis induced by high glucose or free fatty acid plus high glucose [4.5g/L] (FFA/glucose) have not been fully elucidated to date. Herein, we showed the effects of mineral-balanced DSW [magnesium (Mg):calcium (Ca)=3:1] (MB-DSW) on cholesterol metabolism induced by high glucose or FFA/glucose in HepG2 hepatic cells. Moreover, the effects of high ratio Mg DSW [Mg:Ca=40:1] (Mg40) were also investigated...
December 21, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28011281/a-definitive-analytical-spectroscopic-study-of-indian-yellow-an-ancient-pigment-used-for-dating-purposes
#19
Dalva L A de Faria, Howell G M Edwards, Valeria Careaga, Nicholas Walt, Marta S Maier
The Raman spectrum of tartrazine has been mistakenly reported as being that of Indian yellow in the literature, which has serious consequences for the identification of this pigment in art works regarding their authentication. Unlike tartrazine, Indian yellow (a natural mixture of the magnesium and calcium salts of euxanthic acid) exhibits in its Raman spectrum a strong fluorescent background when visible excitation is used, however, excitation in the near infrared (1064nm) permitted the observation of the Raman bands from the raw pigment with the main features placed at 1346, 1368, 1425, 1441 and 1626cm(-1)...
November 30, 2016: Forensic Science International
https://www.readbyqxmd.com/read/28009877/effects-of-reduced-dimensionality-on-the-properties-of-magnesium-hydroxide-and-calcium-hydroxide-nanostructures
#20
Soran Jahangiri, Nicholas J Mosey
Metal hydroxides are a class of layered materials that contain two-dimensional metal hydroxide layers that can be isolated to form layered nanostructures. In this work, density functional theory (DFT) and self-consistent-charge density-functional tight-binding (SCC-DFTB) methods have been used to investigate the properties of magnesium hydroxide and calcium hydroxide nanostructures. The properties of single layer and multi layer structures with up to 10 metal hydroxide sheets and nanoparticles containing more than 2000 atoms have been calculated and compared with the bulk properties of these systems...
December 23, 2016: Physical Chemistry Chemical Physics: PCCP
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