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Calcium magnesium

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https://www.readbyqxmd.com/read/28427449/urolithiasis-analysis-in-a-multiethnic-population-at-a-tertiary-hospital-in-nairobi-kenya
#1
Francis K Wathigo, Alfred Hayombe, Daniel Maina
BACKGROUND: Urolithiasis is a global problem whose incidence is reported to be on the rise across the world. Previously, urolithiasis was reported as being rare among the indigenous African population but recent data suggest otherwise. This study reviewed the demographic and clinical characteristics of patients with urolithiasis seen at the Aga Khan University hospital Nairobi (AKUHN) as well as the chemical composition of the stones and the modalities of therapy used. METHODS: This was a retrospective study which utilized patients' clinical and laboratory records from 2013 to 2014...
April 20, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28424343/interactive-effects-of-temperature-food-and-skeletal-mineralogy-mediate-biological-responses-to-ocean-acidification-in-a-widely-distributed-bryozoan
#2
Daniel S Swezey, Jessica R Bean, Aaron T Ninokawa, Tessa M Hill, Brian Gaylord, Eric Sanford
Marine invertebrates with skeletons made of high-magnesium calcite may be especially susceptible to ocean acidification (OA) due to the elevated solubility of this form of calcium carbonate. However, skeletal composition can vary plastically within some species, and it is largely unknown how concurrent changes in multiple oceanographic parameters will interact to affect skeletal mineralogy, growth and vulnerability to future OA. We explored these interactive effects by culturing genetic clones of the bryozoan Jellyella tuberculata (formerly Membranipora tuberculata) under factorial combinations of dissolved carbon dioxide (CO2), temperature and food concentrations...
April 26, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28423995/harvesting-nutrients-from-source-separated-urine-using-powdered-rice-straw
#3
Shervin Hashemi, Mooyoung Han
As a principle of resource-oriented sanitation practice, urine should be separated from the source and utilized for other purposes such as producing fertilizer. This is because urine is rich in nutrients; therefore, sending it directly to wastewater treatment plants causes problems in the regular treatment process. The addition of solid additives such as powdered rice straw can help with harvesting nutrients from urine. In this study, the procedure and efficiency of using powdered rice straw for nutrient harvesting were investigated by tracking the reductions in ammonia, phosphate, magnesium, and calcium ions, and the harvested nutrients were identified using crystallography methods...
April 20, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28422036/physicochemical-factors-of-the-urine-of-children-with-hypercalciuria
#4
Mercedes Ubetagoyena-Arrieta, Jorge Martínez Sáenz de Jubera, María Nieves Corera-Casty, Eduardo González Pérez-Yarza, Irati García-Albizua
OBJECTIVE: Hypercalciuria is a common lithogenic risk factor. The aim of this study was, first, to study the characteristics of urine biochemical factors of children with hypercalciuria (HC) and compare them with those of children without hypercalciuria. Second, to analyze the differences between children with HC and lithiasis (HCL) and children with HC and no lithiasis (HCNL). METHODS: The sample was composed by 111 cases with HC, divided into 2 groups: HCNL group, consisting of 93 cases with no personal history of kidney stones, and HCL group, 18 cases with personal history of kidney stones...
April 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28421299/compared-effects-of-calcium-and-sodium-polystyrene-sulfonate-on-mineral-and-bone-metabolism-and-volume-overload-in-pre-dialysis-patients-with-hyperkalemia
#5
Yosuke Nakayama, Kaoru Ueda, Sho-Ichi Yamagishi, Miki Sugiyama, Chika Yoshida, Yuka Kurokawa, Nao Nakamura, Tomofumi Moriyama, Goh Kodama, Tomohisa Minezaki, Sakuya Ito, Akiko Nagata, Kensei Taguchi, Junko Yano, Yusuke Kaida, Kazutaka Shibatomi, Kei Fukami
BACKGROUND: Hyperkalemia is prevalent in end-stage renal disease patients, being involved in life-threatening arrhythmias. Although polystyrene sulfonate (PS) is commonly used for the treatment of hyperkalemia, direct comparison of effects between calcium and sodium PS (CPS and SPS) on mineral and bone metabolism has not yet been studied. METHODS: In a randomized and crossover design, 20 pre-dialysis patients with hyperkalemia (>5 mmol/l) received either oral CPS or SPS therapy for 4 weeks...
April 18, 2017: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/28420074/natural-pathogen-control-chemistry-to-replace-toxic-treatment-of-microbes-and-biofilm-in-cooling-towers
#6
REVIEW
Lon Brouse, Richard Brouse, Daniel Brouse
Application of toxic antibacterial agents is considered necessary to control prevalent fresh water microorganisms that grow in evaporative cooling water systems, but can adversely affect the environment and human health. However, natural antibacterial water chemistry has been applied in industrial cooling water systems for over 10 years to inhibit microorganisms with excellent results. The water chemistry method concentrates natural minerals in highly-softened water to produce elevated pH and dissolved solids, while maintaining low calcium and magnesium content...
March 31, 2017: Pathogens
https://www.readbyqxmd.com/read/28419899/the-long-term-tsunami-impact-evolution-of-iron-speciation-and-major-elements-concentration-in-tsunami-deposits-from-thailand
#7
Lidia Kozak, Przemyslaw Niedzielski
The article describes the unique studies of the chemical composition changes of new geological object (tsunami deposits in south Thailand - Andaman Sea Coast) during four years (2005-2008) from the beginning of formation of it (deposition of tsunami transported material, 26 December 2004). The chemical composition of the acid leachable fraction of the tsunami deposits has been studied in the scope of concentration macrocompounds - concentration of calcium, magnesium, iron, manganese and iron speciation - the occurrence of Fe(II), Fe(III) and non-ionic iron species described as complexed iron (Fe complex)...
April 15, 2017: Chemosphere
https://www.readbyqxmd.com/read/28417148/relationship-between-nutritional-factors-and-hip-bone-density-in-individuals-with-chronic-stroke
#8
Samuel K Y Li, Mabel M P Wan, Frankie P L Siu, Susan Chung, Marco Y C Pang
The aim of this study was to investigate the relationship between dietary habits and hip bone health in community-dwelling individuals with chronic stroke. The usual dietary intake of 94 individuals with chronic stroke (30 women, mean age: 59.0 years) was assessed by a 3-day food record within a single week. Dual-energy X-ray absorptiometry was used to measure bone mineral density (BMD) at both hips. The results showed that low hip bone mass was found in 59 and 50 of the participants on the affected and unaffected side, respectively...
April 17, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/28416857/compositional-variability-of-nutrients-and-phytochemicals-in-corn-after-processing
#9
P S Prasanthi, N Naveena, M Vishnuvardhana Rao, K Bhaskarachary
The result of various process strategies on the nutrient and phytochemical composition of corn samples were studied. Fresh and cooked baby corn, sweet corn, dent corn and industrially processed and cooked popcorn, corn grits, corn flour and corn flakes were analysed for the determination of proximate, minerals, xanthophylls and phenolic acids content. This study revealed that the proximate composition of popcorn is high compared to the other corn products analyzed while the mineral composition of these maize products showed higher concentration of magnesium, phosphorus, potassium and low concentration of calcium, manganese, zinc, iron, copper, and sodium...
April 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28415507/influences-of-doping-mesoporous-magnesium-silicate-on-water-absorption-drug-release-degradability-apatite-mineralization-and-primary-cells-responses-to-calcium-sulfate-based-bone-cements
#10
Zhengrong Gu, Sicheng Wang, Weizong Weng, Xiao Chen, Liehu Cao, Jie Wei, Jung-Woog Shin, Jiacan Su
In this study, composite cements containing mesoporous magnesium silicate (m-MS) and calcium sulfate (CS) were fabricated. The results revealed that the setting time of the m-MS/CS composite cements (m-MSC) slightly prolonged with the increase of m-MS content while the compressive strength suffered a little loss. The doping of m-MS improved the water absorption, drug release (vancomycin) and degradability of the m-MSC in Tris-HCl solution (pH=7.4). In addition, addition of m-MS facilitated the apatite-mineralization of m-MSC in simulated body fluid (SBF), indicating good bioactivity...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28414730/elements-including-metals-in-the-atomizer-and-aerosol-of-disposable-electronic-cigarettes-and-electronic-hookahs
#11
Monique Williams, Krassimir Bozhilov, Sanjay Ghai, Prue Talbot
OBJECTIVE: Our purpose was to quantify 36 inorganic chemical elements in aerosols from disposable electronic cigarettes (ECs) and electronic hookahs (EHs), examine the effect of puffing topography on elements in aerosols, and identify the source of the elements. METHODS: Thirty-six inorganic chemical elements and their concentrations in EC/EH aerosols were determined using inductively coupled plasma optical emission spectroscopy, and their source was identified by analyzing disassembled atomizers using scanning electron microscopy and energy dispersive X-ray spectroscopy...
2017: PloS One
https://www.readbyqxmd.com/read/28411570/impacts-of-coal-fly-ash-on-plant-growth-and-accumulation-of-essential-nutrients-and-trace-elements-by-alfalfa-medicago-sativa-grown-in-a-loessial-soil
#12
Honghua He, Zhigang Dong, Qi Peng, Xia Wang, Chenbin Fan, Xingchang Zhang
Coal fly ash (CFA) is a problematic solid waste all over the world. One distinct beneficial reuse of CFA is its utilization in land application as a soil amendment. A pot experiment was carried out to assess the feasibility of using CFA to improve plant growth and increase the supply of plant-essential elements and selenium (Se) of a loessial soil for agricultural purpose. Plants of alfalfa (Medicago sativa) were grown in a loessial soil amended with different rates (5%, 10%, 20% and 40%) of CFA for two years and subjected to four successive cuttings...
April 12, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28402956/elevated-dietary-magnesium-during-pregnancy-and-postnatal-life-prevents-ectopic-mineralization-in-enpp1asj-mice-a-model-for-generalized-arterial-calcification-of-infancy
#13
Joshua Kingman, Jouni Uitto, Qiaoli Li
Generalized arterial calcification of infancy (GACI) is an autosomal recessive disorder caused by mutations in the ENPP1 gene. It is characterized by mineralization of the arterial blood vessels, often diagnosed prenatally, and associated with death in early childhood. There is no effective treatment for this devastating disorder. We previously characterized the Enpp1asjmutant mouse as a model of GACI, and we have now explored the effect of elevated dietary magnesium (five-fold) in pregnant mothers and continuing for the first 14 weeks of postnatal life...
March 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28397455/-application-of-synthetic-and-semisynthetic-polymers-kollidon-k30-and-hydroxypropylmethylcellulose-as-carriers-of-ketoprofen-in-solid-oral-prolonged-release-dosage-forms
#14
Wojciech Linka, Mateusz Kot, Michał Kołodziejczyk
BACKGROUND: One of the most important challenges of the modern technology of solid oral dosage forms is to increase the effectiveness of the drug, reduce side effects and improve the comfort of use. One way to obtain such effects are prolonged release dosage forms. OBJECTIVES: The aim of the study was to investigate the suitability of polymers (synthetic - Kollidon K30 and semisynthetic - hydroxypropyl methylcellulose), and calcium hydrogen phosphate dihydrate - as an inorganic insoluble filler - in the construction of the matrices of the solid oral dosage forms containing non-steroidal anti-inflammatory drugs (NSAIDs)...
July 2016: Polimery W Medycynie
https://www.readbyqxmd.com/read/28396170/addendum-to-process-development-for-elemental-recovery-from-pgm-tailings-by-thermochemical-treatment-preliminary-major-element-extraction-studies-using-ammonium-sulphate-as-extracting-agent-waste-manage-50-2016-334-345
#15
Sameera Mohamed, Elizabet M van der Merwe, Wladyslaw Altermann, Frédéric J Doucet
In a recent paper, a promising two-stage process for the extraction of major elements from Platinum Group Metals (PGM) was presented (Mohamed et al., 2016). This process involved solid-solid thermochemical treatment of tailings with ammonium sulphate (stage one), followed by an optimised acid dissolution step (stage two). The inclusion of a control experiment for the optimal dissolution procedure was however overlooked. The new set of data delivered by the control experiment reveals that (i) most of the silicon and calcium are extracted via the acid leaching step, (ii) aluminium and magnesium are extracted at each stage of the process, and (iii) the thermochemical step is the main contributor to chromium and iron extraction...
April 7, 2017: Waste Management
https://www.readbyqxmd.com/read/28390303/bone-implant-degradation-and-mechanical-response-of-bone-surrounding-mg-alloy-implants
#16
Martin Meischel, Daniel Hörmann, Johannes Draxler, Elmar K Tschegg, Johannes Eichler, Thomas Prohaska, Stefanie E Stanzl-Tschegg
In the present paper, first results of the influence of the degradation of biodegradable materials on the hardness of the bone are presented in detail. For this purpose, different materials (Mg, Ti and biopolymers) were implanted into the femora of growing rats and bone cross sections were examined for the micro-hardness (MH). The aim of the present paper was to examine the mechanical response of the bone areas surrounding the implant at defined sites and at specified periods after implantation. A special focus was set on Mg alloys...
March 27, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28389964/ion-selectivity-of-the-flagellar-motors-derived-from-the-alkaliphilic-bacillus-and-paenibacillus-species
#17
Yuka Takahashi, Masahiro Ito
Many bacteria can swim using their flagella, which are filamentous organelles that extend from the cell surface. The flagellar motor is energized by either a proton (H(+)) or sodium ion (Na(+)) as the motive force. MotAB-type stators use protons, whereas MotPS- and PomAB-type stators use Na(+) as the coupling ions. Recently, alkaliphilic Bacillus alcalophilus was shown to use potassium ions (K(+)) and rubidium ions (Rb(+)) for flagellar rotation, and the flagellar motor from Paenibacillus sp. TCA-20 uses divalent cations such as magnesium ions (Mg(2+)), calcium ions (Ca(2+)), and strontium ions (Sr(2+)) for coupling...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28388674/variation-in-the-mineral-element-concentration-of-moringa-oleifera-lam-and-m-stenopetala-bak-f-cuf-role-in-human-nutrition
#18
Diriba B Kumssa, Edward Jm Joy, Scott D Young, David W Odee, E Louise Ander, Martin R Broadley
BACKGROUND: Moringa oleifera (MO) and M. stenopetala (MS) (family Moringaceae; order Brassicales) are multipurpose tree/shrub species. They thrive under marginal environmental conditions and produce nutritious edible parts. The aim of this study was to determine the mineral composition of different parts of MO and MS growing in their natural environments and their potential role in alleviating human mineral micronutrient deficiencies (MND) in sub-Saharan Africa. METHODS: Edible parts of MO (n = 146) and MS (n = 50), co-occurring cereals/vegetables and soils (n = 95) underneath their canopy were sampled from localities in southern Ethiopia and Kenya...
2017: PloS One
https://www.readbyqxmd.com/read/28386061/effect-of-ca-p-compound-formed-by-hydrothermal-treatment-on-biodegradation-and-biocompatibility-of-mg-3al-1zn-1-5ca-alloy-in-vitro-and-in-vivo-evaluation
#19
Yu-Kyoung Kim, Yong-Seok Jang, Young-Hee Lee, Ho-Keun Yi, Tae-Sung Bae, Min-Ho Lee
Chemical combinations of Ca-P produced via plasma electrolytic oxidation (PEO) and a hydrothermal treatment were fabricated to improve the initial corrosion resistance and biocompatibility of a biodegradable Mg-3Al-1Zn-1.5Ca alloy. For the formation of an amorphous calcium phosphate composite layer on the surface of a magnesium alloy, a PEO layer composed of MgO and Mg3(PO4)2 was formed by PEO in electrolytes containing preliminary phosphate ions. During the second stage, a thick and dense Ca layer was formed by Ca electrodeposition after PEO...
April 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28380029/high-dietary-selenium-intake-is-associated-with-less-insulin-resistance-in-the-newfoundland-population
#20
Yongbo Wang, Meiju Lin, Xiang Gao, Pardis Pedram, Jianling Du, Chandurkar Vikram, Wayne Gulliver, Hongwei Zhang, Guang Sun
As an essential nutrient, Selenium (Se) is involved in many metabolic activities including mimicking insulin function. Data on Se in various biological samples and insulin resistance are contradictory, moreover there is no large study available regarding the relationship of dietary Se intake with insulin resistance in the general population. To investigate the association between dietary Se intake and variation of insulin resistance in a large population based study, a total of 2420 subjects without diabetes from the CODING (Complex Diseases in the Newfoundland Population: Environment and Genetics) study were assessed...
2017: PloS One
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