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Calcium magnesium

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https://www.readbyqxmd.com/read/28222407/parathyroid-hormone-response-to-severe-vitamin-d-deficiency-is-associated-with-femoral-neck-bone-mineral-density-an-observational-study-of-405-women-with-hip-fracture
#1
Marco Di Monaco, Carlotta Castiglioni, Rosa Tappero
OBJECTIVE: Hip-fracture patients with vitamin D deficiency can have either secondary hyperparathyroidism or normal levels of parathyroid hormone (PTH). We hypothesized that bone mineral density (BMD) could be lower in patients with high PTH levels than in those with normal levels of PTH, irrespectively of the severity of vitamin D depletion. DESIGN: In this cross-sectional study, we examined 405 women who had serum 25-hydroxyvitamin D below 12ng/ml 20.0 ± 5.9 (mean ± SD) days after a hip-fracture...
October 2016: Hormones: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28221141/-etiopathogenic-factors-of-the-different-types-of-urinary-litiasis
#2
Miguel Arrabal-Martín, María Carmen Cano-García, Miguel Ángel Arrabal-Polo, Alejandro Domínguez-Amillo, Nelson Canales-Casco, Javier de la Torre-Trillo, José Manuel Cózar-Olmo
In this review, we analyze the etiopathogenic principles of urinary lithiasis formation. In the kidney, calcifications that may cause renal lithiasis are produced as a consequence of processes that injury the urothelium at the papilla and Bellini's ducts. With the improvement of imaging techniques, mainly micro CT scan, it is possible to detect them and we may be able to anticipate to the formation of lithiasis. As we well know, there are different factors that influence the formation of the calculi depending on their composition...
January 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28218527/bioactive-peptides-isolated-from-casein-phosphopeptides-enhance-calcium-and-magnesium-uptake-in-caco-2-cell-monolayers
#3
Yong Cao, Jian-Yin Miao, Guo Liu, Zhen Luo, Zumeng Xia, Fei Liu, Mingfei Yao, Xiaoqiong Cao, Shengwei Sun, Yanyin Lin, Yaqi Lan, Hang Xiao
The ability of casein phosphopeptides (CPPs) to bind and transport minerals has been previously studied. However, the single bioactive peptides responsible for the effects of CPPs have not been identified. This study was to purify calcium-binding peptides from CPPs and to determine their effects on calcium and magnesium uptake by Caco-2 cell monolayers. Five monomer peptides designated P1 to P5 were isolated and the amino acid sequences were determined using LC-MS/MS. Compared with the CPP-free control, all five monomeric peptides exhibited significant enhancing effects on the uptake of calcium and magnesium (P < 0...
February 20, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28218507/enabling-inkjet-printed-graphene-for-ion-selective-electrodes-with-post-print-thermal-annealing
#4
Qing He, Suprem R Das, Nathaniel T Garland, Dapeng Jing, John A Hondred, Allison A Cargill, Shaowei Ding, Chandran Karunakaran, Jonathan C Claussen
Inkjet printed graphene (IPG) has recently shown tremendous promise in reducing the cost and complexity of graphene circuit fabrication. Herein we demonstrate, for the first time, the fabrication of an ion selective electrode (ISE) with IPG. A thermal annealing process in a nitrogen ambient environment converts the IPG into a highly conductive electrode (sheet resistance changes from 52.8 ± 7.4 MΩ/☐ for unannealed graphene to 172.7 ± 33.3Ω/☐ for graphene annealed at 950°C). Raman spectroscopy and field emission scanning electron microscopy (FESEM) analysis reveals that the printed graphene flakes begin to smooth at an annealing temperature of 500°C and then become more porous and more electrically conductive when annealed at temperatures of 650°C and above...
February 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28218351/the-role-of-ionized-calcium-and-magnesium-in-regional-citrate-anticoagulation-and-its-impact-on-inflammatory-parameters
#5
Karin Strobl, Stephan Harm, Viktoria Weber, Jens Hartmann
INTRODUCTION: Regional anticoagulation with citrate has been found to be superior to heparin in terms of biocompatibility, and numerous protocols for regional citrate anticoagulation have been published, while a consensus on the target concentration of ionized calcium (Ca2+) in the extracorporeal circuit has not been reached so far. METHODS: The aim of this in vitro study was to assess the impact of different citrate concentrations on coagulation as well as on complement activation and cytokine secretion and to investigate the impact of ionized magnesium (Mg2+) on these parameters...
February 13, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28216891/effects-of-potassium-sulfate-k2so4-on-the-element-contents-polyphenol-content-antioxidant-and-antimicrobial-activities-of-milk-thistle-silybum-marianum
#6
Gulsum Yaldiz
BACKGROUND: Silybum marianum L. (Milk thistle) is native to the Mediterranean basin and is now widespread throughout the world. It's sprout is used as a herbal medicine for the treatment of liver disease for centuries. The seeds of milk thistle contain silymarin, an isomeric mixture of flavonolignans [silybin, silychristin, and silydianin]. Silymarin acts as a strong anti-hepatotoxic. OBJECTIVES: The objective of this study was to evaluate the influences of potassium sulfate [K2SO4] fertilizer doses on polyphenol content, some nutrient elements, antioxidant and antimicrobial activities of milk thistle at experimental fields of Ordu University in Turkey...
January 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28214516/saturation-of-long-term-potentiation-in-the-dorsal-cochlear-nucleus-and-its-pharmacological-reversal-in-an-experimental-model-of-tinnitus
#7
Thomas Tagoe, Daniel Deeping, Martine Hamann
Animal models have demonstrated that tinnitus is a pathology of dysfunctional excitability in the central auditory system, in particular in the dorsal cochlear nucleus (DCN) of the brainstem. We used a murine model and studied whether acoustic over-exposure leading to hearing loss and tinnitus, affects long-term potentiation (LTP) at DCN multisensory synapses. Whole cell and field potential recordings were used to study the effects on release probability and synaptic plasticity, respectively in brainstem slices...
February 15, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28214096/maintenance-fluid-therapy-in-a-tertiary-hospital-a-prevalence-study
#8
R Uña Orejón, L Gisbert de la Cuadra, D Garríguez Pérez, J Díez Sebastián, M P Ureta Tolsada
OBJECTIVE: To assess the types of maintenance fluids used in our hospital, comparing their volume and composition to the standards recommended by the guidelines. MATERIAL AND METHODS: Observational, cross-sectional study. Volume and type of fluid therapy administered during 24h to patients admitted to various hospital departments were recorded. Patients receiving fluid therapy because of water-electrolyte imbalance were excluded. RESULTS: Out of 198 patients registered, 74 (37...
February 14, 2017: Revista Española de Anestesiología y Reanimación
https://www.readbyqxmd.com/read/28208814/adequacy-of-usual-vitamin-and-mineral-intake-in-spanish-children-and-adolescents-enalia-study
#9
Ana M López-Sobaler, Aránzazu Aparicio, Liliana G González-Rodríguez, Esther Cuadrado-Soto, Josefa Rubio, Victoria Marcos, Rosa Sanchidrián, Sara Santos, Napoleón Pérez-Farinós, Marian Ángeles Dal Re, Carmen Villar, Teresa Robledo, J Javier Castrodeza, Rosa M Ortega
Background: The National Dietary Survey on the Child and Adolescent Population in Spain (ENALIA) provides data to assess the usual micronutrient intake among Spanish infants, children, and adolescents. Methods: Cross-sectional survey (November 2012-July 2014) of a representative sample of Spanish children and adolescents (six months-17 years) (n = 1862). Dietary information was collected using two non-consecutive one-day food diaries (six months-10 years old) or two 24 h dietary recalls (11 years and older) separated by at least 14 days...
February 13, 2017: Nutrients
https://www.readbyqxmd.com/read/28208271/cation-dependent-surface-charge-regulation-in-gated-nanofluidic-devices
#10
Marie Fuest, Kaushik K Rangharajan, Caitlin Boone, A T Conlisk, Shaurya Prakash
Surface charge governs nanoscale aqueous electrolyte transport, both in engineered analytical systems and in biological entities such as ion channels and ion pumps as a function of ion type and concentration. Embedded electrodes in a nanofluidic channel, isolated from the fluid in the channel by a dielectric layer, act as active, tunable gates to systematically modify local surface charge density at the interface between the nanochannel surface and the aqueous electrolyte solution, causing significant changes in measured nanochannel conductance...
February 7, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28207797/mutation-increasing-%C3%AE-carotene-concentrations-does-not-adversely-affect-concentrations-of-essential-mineral-elements-in-pepper-fruit
#11
Nasya B Tomlekova, Philip J White, Jacqueline A Thompson, Emil A Penchev, Stephan Nielen
Vitamin and mineral deficiencies are prevalent in human populations throughout the world. Vitamin A deficiency affects hundreds of millions of pre-school age children in low income countries. Fruits of pepper (Capsicum annuum L.) can be a major dietary source of precursors to Vitamin A biosynthesis, such as β-carotene. Recently, pepper breeding programs have introduced the orange-fruited (of) trait of the mutant variety Oranzheva kapiya, which is associated with high fruit β-carotene concentrations, to the mutant variety Albena...
2017: PloS One
https://www.readbyqxmd.com/read/28198489/negative-effects-of-divalent-mineral-cations-on-the-bioaccessibility-of-carotenoids-from-plant-food-matrices-and-related-physical-properties-of-gastro-intestinal-fluids
#12
Joana Corte-Real, Marie Bertucci, Christos Soukoulis, Charles Desmarchelier, Patrick Borel, Elke Richling, Lucien Hoffmann, Torsten Bohn
Carotenoid intake and tissue levels have been frequently associated with reduced risk of chronic diseases. However, their bioavailability is low and influenced by many dietary related parameters. Divalent mineral cations have been suggested to interfere with carotenoid digestion and to hamper micellarization, a prerequisite for their uptake, via complexation of bile salts and precipitation of fatty acids. In the present investigation, we have evaluated the effects of increasing concentrations of magnesium (0-300 mg L(-1)), calcium (0-1500 mg L(-1)), zinc (0-200 mg L(-1)), and sodium (0-1500 mg L(-1); control monovalent cation), on carotenoid bioaccessibility from frequently consumed food items rich in carotenoids (tomato juice, carrot juice, apricot nectar, spinach and field salad), following simulated gastro-intestinal digestion...
February 15, 2017: Food & Function
https://www.readbyqxmd.com/read/28198181/mineralogical-plasticity-acts-as-a-compensatory-mechanism-to-the-impacts-of-ocean-acidification
#13
Jonathan Y S Leung, Bayden D Russell, Sean D Connell
Calcifying organisms are considered particularly susceptible to the future impacts of ocean acidification (OA), but recent evidence suggests that they may be able to maintain calcification and overall fitness. The underlying mechanism remains unclear but may be attributed to mineralogical plasticity, which modifies the energetic cost of calcification. To test the hypothesis that mineralogical plasticity enables the maintenance of shell growth and functionality under OA conditions, we assessed the biological performance of a gastropod (respiration rate, feeding rate, somatic growth, and shell growth of Austrocochlea constricta) and analyzed its shell mechanical and geochemical properties (shell hardness, elastic modulus, amorphous calcium carbonate, calcite to aragonite ratio, and magnesium to calcium ratio)...
February 15, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28197890/relationships-among-diet-physical-activity-and-dual-plane-dual-energy-x-ray-absorptiometry-bone-outcomes-in-pre-pubertalgirls
#14
Jie Ren, Lynn S Brann, Kay S Bruening, Tamara A Scerpella, Jodi N Dowthwaite
: In pre-pubertal girls, nutrient intakes and non-aquatic organized activity were evaluated as factors in vertebral body bone mass, structure, and strength. Activity, vitamin B12, and dietary fiber predicted bone outcomes most consistently. Exercise and vitamin B12 appear beneficial, whereas high fiber intake appears to be adverse for vertebral body development. PURPOSE: Childhood development sets the baseline for adult fracture risk. Most studies evaluate development using postero-anterior (PA) dual-energy X-ray absorptiometry (DXA) areal bone mineral density, bone mineral content, and bone mineral apparent density...
December 2017: Archives of Osteoporosis
https://www.readbyqxmd.com/read/28197823/the-deposition-of-strontium-and-zinc-co-substituted-hydroxyapatite-coatings
#15
L Robinson, K Salma-Ancane, L Stipniece, B J Meenan, A R Boyd
The in vitro and in vivo performance of hydroxyapatite (HAp) coatings can be modified by the addition of different trace ions, such as silicon (Si), lithium (Li), magnesium (Mg), zinc (Zn) or strontium (Sr) into the HAp lattice, to more closely mirror the complex chemistry of human bone. To date, most of the work in the literature has considered single ion-substituted materials and coatings, with limited reports on co-substituted calcium phosphate systems. The aim of this study was to investigate the potential of radio frequency magnetron sputtering to deposit Sr and Zn co-substituted HAp coatings using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS)...
March 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28194267/retinol-%C3%AE-tocopherol-and-selected-minerals-in-breast-milk-of-lactating-women-with-full-term-infants-in-south-korea
#16
Hyesook Kim, Byung-Mun Jung, Bum-Noh Lee, Yun-Je Kim, Ji A Jung, Namsoo Chang
BACKGROUND/OBJECTIVES: This study was performed to measure fat-soluble vitamins and minerals in breast milk of Korean lactating mothers who exclusively breastfed their babies. SUBJECTS/METHODS: Breast milk samples were collected from 334 mothers. Concentrations of retinol and α-tocopherol were analyzed by high performance liquid chromatography ultraviolet spectrometry while concentrations of minerals were measured by inductively coupled plasma optical emission spectrometry...
February 2017: Nutrition Research and Practice
https://www.readbyqxmd.com/read/28193285/the-share-of-ultra-processed-foods-and-the-overall-nutritional-quality-of-diets-in-the-us-evidence-from-a-nationally-representative-cross-sectional-study
#17
Euridice Martínez Steele, Barry M Popkin, Boyd Swinburn, Carlos A Monteiro
BACKGROUND: Recent population dietary studies indicate that diets rich in ultra-processed foods, increasingly frequent worldwide, are grossly nutritionally unbalanced, suggesting that the dietary contribution of these foods largely determines the overall nutritional quality of contemporaneous diets. Yet, these studies have focused on individual nutrients (one at a time) rather than the overall nutritional quality of the diets. Here we investigate the relationship between the energy contribution of ultra-processed foods in the US diet and its content of critical nutrients, individually and overall...
February 14, 2017: Population Health Metrics
https://www.readbyqxmd.com/read/28193168/genome-wide-snp-identification-linkage-map-construction-and-qtl-mapping-for-seed-mineral-concentrations-and-contents-in-pea-pisum-sativum-l
#18
Yu Ma, Clarice J Coyne, Michael A Grusak, Michael Mazourek, Peng Cheng, Dorrie Main, Rebecca J McGee
BACKGROUND: Marker-assisted breeding is now routinely used in major crops to facilitate more efficient cultivar improvement. This has been significantly enabled by the use of next-generation sequencing technology to identify loci and markers associated with traits of interest. While rich in a range of nutritional components, such as protein, mineral nutrients, carbohydrates and several vitamins, pea (Pisum sativum L.), one of the oldest domesticated crops in the world, remains behind many other crops in the availability of genomic and genetic resources...
February 13, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28192171/a-new-light-on-alkaptonuria-a-fourier-transform-infrared-microscopy-ftirm-and-low-energy-x-ray-fluorescence-lexrf-microscopy-correlative-study-on-a-rare-disease
#19
Elisa Mitri, Lia Millucci, Lucia Merolle, Giulia Bernardini, Lisa Vaccari, Alessandra Gianoncelli, Annalisa Santucci
BACKGROUND: Alkaptonuria (AKU) is an ultra-rare disease associated to the lack of an enzyme involved in tyrosine catabolism. This deficiency results in the accumulation of homogentisic acid (HGA) in the form of ochronotic pigment in joint cartilage, leading to a severe arthropathy. Secondary amyloidosis has been also unequivocally assessed as a comorbidity of AKU arthropathy. Composition of ochronotic pigment and how it is structurally related to amyloid is still unknown. METHODS: We exploited Synchrotron Radiation Infrared and X-Ray Fluorescence microscopies in combination with conventional bio-assays and analytical tools to characterize chemical composition and morphology of AKU cartilage...
February 9, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28190443/neurologic-manifestations-of-major-electrolyte-abnormalities
#20
M Diringer
The brain operates in an extraordinarily intricate environment which demands precise regulation of electrolytes. Tight control over their concentrations and gradients across cellular compartments is essential and when these relationships are disturbed neurologic manifestations may develop. Perturbations of sodium are the electrolyte disturbances that most often lead to neurologic manifestations. Alterations in extracellular fluid sodium concentrations produce water shifts that lead to brain swelling or shrinkage...
2017: Handbook of Clinical Neurology
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