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https://www.readbyqxmd.com/read/28550602/optimizing-the-modification-of-wood-waste-biochar-via-metal-oxides-to-remove-and-recover-phosphate-from-human-urine
#1
Kangning Xu, Chuke Zhang, Xiaomin Dou, Weifang Ma, Chengwen Wang
The recovery of phosphate from human urine has been considered as one of the most attractive benefits of urine source separation because P is an essential but limited macronutrient. This study investigated the approach to modify wood waste biochar via metal oxides aiming to recover phosphate from human urine to produce a value-added biochar. Results showed the phosphate removal ability was enhanced for the modified biochar pre-treated in modification solutions of MgCl2, AlCl3, CaCl2 and FeCl3, respectively, while natural biochar released phosphate to urine...
May 26, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28542410/gla-rich-protein-function-as-an-anti-inflammatory-agent-in-monocytes-macrophages-implications-for-calcification-related-chronic-inflammatory-diseases
#2
Carla S B Viegas, Rúben M Costa, Lúcia Santos, Paula A Videira, Zélia Silva, Nuna Araújo, Anjos L Macedo, António P Matos, Cees Vermeer, Dina C Simes
Calcification-related chronic inflammatory diseases are multifactorial pathological processes, involving a complex interplay between inflammation and calcification events in a positive feed-back loop driving disease progression. Gla-rich protein (GRP) is a vitamin K dependent protein (VKDP) shown to function as a calcification inhibitor in cardiovascular and articular tissues, and proposed as an anti-inflammatory agent in chondrocytes and synoviocytes, acting as a new crosstalk factor between these two interconnected events in osteoarthritis...
2017: PloS One
https://www.readbyqxmd.com/read/28533546/prostaglandin-e2-inhibits-matrix-mineralization-by-human-bone-marrow-stromal-cell-derived-osteoblasts-via-epac-dependent-camp-signaling
#3
Ali Mirsaidi, André N Tiaden, Peter J Richards
The osteoinductive properties of prostaglandin E2 (PGE2) and its signaling pathways have led to suggestions that it may serve as a potential therapeutic strategy for bone loss. However, the prominence of PGE2 as an inducer of bone formation is attributed primarily to findings from studies using rodent models. In the current study, we investigated the effects of PGE2 on human bone marrow stromal cell (hBMSC) lineage commitment and determined its mode of action. We demonstrated that PGE2 treatment of hBMSCs significantly altered the expression profile of several genes associated with osteoblast differentiation (RUNX2 and ALP) and maturation (BGLAP and MGP)...
May 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28524237/in-vitro-dialysis-of-cytokine-rich-plasma-with-high-and-medium-cut-off-membranes-reduces-its-procalcific-activity
#4
Kevin Willy, Michael Hulko, Markus Storr, Rose Speidel, Julia Gauss, Ralf Schindler, Daniel Zickler
Recently developed high-flux (HF) dialysis membranes with extended permeability provide better clearance of middle-sized molecules such as interleukins (ILs). Whether this modulation of inflammation influences the procalcific effects of septic plasma on vascular smooth muscle cells (VSMCs) is not known. To assess the effects of high cut-off (HCO) and medium cut-off (MCO) membranes on microinflammation and in vitro vascular calcification we developed a miniature dialysis model. Plasma samples from lipopolysaccharide-spiked blood were dialyzed with HF, HCO, and MCO membranes in an in vitro miniature dialysis model...
May 19, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28487368/matrix-gla-protein-deficiency-impairs-nasal-septum-growth-causing-midface-hypoplasia
#5
Juliana Marulanda, Hazem Eimar, Marc D McKee, Michelle Berkvens, Valentin Nelea, Hassem Roman, Teresa Borrás, Faleh Tamimi, Mathieu Ferron, Monzur Murshed
Genetic and environmental factors may lead to abnormal growth of the orofacial skeleton affecting the overall structure of the face. In the current study, we investigated the craniofacial abnormalities in a mouse model for Keutel syndrome, a rare genetic disease caused by loss-of-function mutations in the matrix Gla protein (MGP) gene. Keutel syndrome patients show diffuse ectopic calcification of cartilaginous tissues and impaired midface development. Our comparative cephalometric analyses of micro-CT images revealed a severe midface hypoplasia in Mgp-/- mice...
May 9, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28464802/phosphate-binders-affect-vitamin-k-concentration-by-undesired-binding-an-in-vitro-study
#6
A Neradova, S P Schumacher, I Hubeek, P Lux, L J Schurgers, M G Vervloet
BACKGROUND: Vascular calcification is a major contributing factor to mortality in end stage renal disease (ESRD). Despite the efficacy of phosphate binders to improve hyperphosphatemia, data on vascular calcification are less clear. There seems to be a difference in attenuation or delay in progression between different binders. In this in vitro experiment we tested whether phosphate binders could limit bioavailability of vitamin K2 by undesired binding. Vitamin K-deficiency limits activation of the vascular tissue mineralization inhibitor matrix γ-carboxyglutamate (Gla) protein (MGP) thereby exacerbating vascular calcification...
May 2, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28460948/enzymatic-biotransformation-of-polyphenolics-increases-antioxidant-activity-of-red-and-white-grape-pomace
#7
Isabela M Martins, Bruna S Roberto, Jeffrey B Blumberg, C-Y Oliver Chen, Gabriela A Macedo
Grape pomace (GP) is a polyphenolic-rich byproduct of wine production. As most polyphenolics are either bound to cellular matrices or present as free polymeric forms, treatment with hydrolytic enzymes may act to increase GP functionalities. The aim of this study was to examine the impact of tannase alone (T), pectinase plus cellulase (PC) or a mixture of them (TPC) on the hydrolysis of polyphenolics in red GP (RGP), white GP (WGP), and mixed GP (MGP) from Brazilian wine production, as well as antioxidant activity of the products...
November 2016: Food Research International
https://www.readbyqxmd.com/read/28458247/quick-detection-and-quantification-of-iron-cyanide-complexes-using-fourier-transform-infrared-spectroscopy
#8
Magdalena Sut-Lohmann, Thomas Raab
The continuous release of persistent iron-cyanide (Fe-CN) complexes from various industrial sources poses a high hazard to the environment and indicates the necessity to analyze a considerable amount of samples. Conventional flow injection analysis (FIA) is a time and cost consuming method for cyanide (CN) determination. Thus, a rapid and economic alternative needs to be developed to quantify the Fe-CN complexes. 52 soil samples were collected at a former Manufactured Gas Plant (MGP) site in order to determine the feasibility of diffuse reflectance infrared Fourier spectroscopy (DRIFTS)...
April 27, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28450376/genome-wide-exome-analysis-of-cmv5-disparate-mouse-strains-that-differ-in-host-resistance-to-murine-cytomegalovirus-infection
#9
Alyssa Gillespie, Heather Lee, Catherine Robertson, Maya Cabot, Michael G Brown
Host resistance to murine cytomegalovirus (MCMV) varies in different strains of laboratory mice due to differences in expression of determinants that control and clear viral infection. The major histocompatibility complex (MHC) class I D(k) molecule is one such determinant that controls MCMV through the action of natural killer (NK) cells. The extent of NK cell-mediated Dk-dependent resistance to infection, however, varies in different mouse strains. The molecular genetic basis of this variation remains unclear...
April 26, 2017: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/28411264/grecos-project-genotyping-recurrence-risk-of-stroke-the-use-of-genetics-to-predict-the-vascular-recurrence-after-stroke
#10
Israel Fernández-Cadenas, Maite Mendióroz, Dolors Giralt, Cristina Nafria, Elena Garcia, Caty Carrera, Cristina Gallego-Fabrega, Sophie Domingues-Montanari, Pilar Delgado, Marc Ribó, Mar Castellanos, Sergi Martínez, Marimar Freijo, Jordi Jiménez-Conde, Marta Rubiera, José Alvarez-Sabín, Carlos A Molina, Maria Angels Font, Marta Grau Olivares, Ernest Palomeras, Natalia Perez de la Ossa, Maite Martinez-Zabaleta, Jaime Masjuan, Francisco Moniche, David Canovas, Carlos Piñana, Francisco Purroy, Dolores Cocho, Inma Navas, Carlos Tejero, Nuria Aymerich, Natalia Cullell, Elena Muiño, Joaquín Serena, Francisco Rubio, Antoni Davalos, Jaume Roquer, Juan Francisco Arenillas, Joan Martí-Fábregas, Keith Keene, Wei-Min Chen, Bradford Worrall, Michele Sale, Adrià Arboix, Jerzy Krupinski, Joan Montaner
BACKGROUND AND PURPOSE: Vascular recurrence occurs in 11% of patients during the first year after ischemic stroke (IS) or transient ischemic attack. Clinical scores do not predict the whole vascular recurrence risk; therefore, we aimed to find genetic variants associated with recurrence that might improve the clinical predictive models in IS. METHODS: We analyzed 256 polymorphisms from 115 candidate genes in 3 patient cohorts comprising 4482 IS or transient ischemic attack patients...
April 14, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28364100/-expression-of-matrix-gla-protein-and-bone-morphogenetic-protein-2-in-renal-papillary-tissues-in-patients-with-calcium-oxalate-kidney-stones
#11
Min Zhu, Feng Zeng, Yu Cui, Xifeng Liu, Hequn Chen
To compare expression levels of matrix Gla protein (MGP) and bone morphogenetic protein 2 (BMP-2) in Randall's plaque of renal papillary tissues in patients with calcium oxalate kidney stones and the underlying mechanism for stone formation.
 Methods: A total of 30 samples of Randall's plaque in renal papillary tissues from patients with calcium oxalate kidney stones were collected from the Department of Urology of Xiangya Hospital of Central South University from April, 2015 to December, 2015 and served as an experimental group...
March 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28356433/circulating-vitamin-k-is-inversely-associated-with-incident-cardiovascular-disease-risk-among-those-treated-for-hypertension-in-the-health-aging-and-body-composition-study-health-abc
#12
M Kyla Shea, Sarah L Booth, Daniel E Weiner, Tina E Brinkley, Alka M Kanaya, Rachel A Murphy, Eleanor M Simonsick, Christina L Wassel, Cees Vermeer, Stephen B Kritchevsky
Background: A role for vitamin K in coronary artery calcification (CAC), a subclinical manifestation of cardiovascular disease (CVD), has been proposed because vitamin K-dependent proteins, including the calcification inhibitor matrix Gla protein (MGP), are present in vascular tissue. Observational studies found that low circulating phylloquinone (vitamin K-1) was associated with increased CAC progression, especially in persons treated for hypertension. It is unknown whether hypertension treatment modifies this putative role of vitamin K in clinical CVD risk...
March 29, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28340119/the-risk-of-nephrolithiasis-is-causally-related-to-inactive-matrix-gla-protein-a-marker-of-vitamin-k-status-a-mendelian-randomization-study-in-a-flemish-population
#13
Fang-Fei Wei, Lutgarde Thijs, Zhen-Yu Zhang, Lotte Jacobs, Wen-Yi Yang, Erika Salvi, Lorena Citterio, Nicholas Cauwenberghs, Tatiana Kuznetsova, Nadja E A Drummen, Azusa Hara, Paolo Manunta, Yan Li, Peter Verhamme, Karel Allegaert, Daniele Cusi, Cees Vermeer, Jan A Staessen
Background.: Vitamin K (VK)-dependent γ-glutamate carboxylation and serine phosphorylation activate matrix Gla protein (MGP) to a potent locally acting inhibitor of calcification. Nephrolithiasis represents a process of unwanted calcification associated with substantial mortality and high recurrence rates. We hypothesized that the risk of nephrolithiasis increases with VK shortage, as exemplified by higher plasma levels of desphospho-uncarboxylated MGP (dp-ucMGP). Methods...
March 15, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28332409/laboratory-and-pilot-scale-field-experiments-for-application-of-iron-oxide-nanoparticle-loaded-chitosan-composites-to-phosphate-removal-from-natural-water
#14
Jae-Hyun Kim, Song-Bae Kim, Sang-Hyup Lee, Jae-Woo Choi
The aim of this study was to apply iron oxide nanoparticle-chitosan (ION-chitosan) composites to phosphate removal from natural water collected from the Seoho Stream in Suwon, Republic of Korea. Laboratory batch experiments showed that phosphate removal by the ION-chitosan composites was not sensitive to pH changes between pH values of 5.0 and 9.0. During six cycles of adsorption-desorption, the composites could be successfully regenerated with 5 mM NaOH solution and reused for phosphate removal. Laboratory fixed-bed column experiments (column height = 10 and 20 cm, inner diameter = 2...
March 23, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28320782/diabetes-confers-in-vitro-calcific-potential-on-serum-which-associates-with-in-vivo-vascular-calcification
#15
Ashish Patidar, Dhruv K Singh, Shori Thakur, Peter Winocour, Ken Farrington, Anwar Baydoun
Although vascular calcification (VC) is prevalent in type 2 diabetes (T2DM), underlying mechanisms remain unclear. Neither is it known whether T2DM confers calcific potential (CP) to serum, enabling it to induce VC outside the disease milieu. We therefore investigated the CP of serum from controls and subjects with T2DM with and without in vivo VC . Samples from 20 healthy controls and 45 age- and sex-matched patients with T2DM with MDRD-eGFR>60mL min(-1) were analysed for CP using rat aortic smooth muscle cells in vitro CT scans of femoral arteries identified individuals with in vivo calcification...
March 20, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28318300/bacteria-from-wheat-and-cucurbit-plant-roots-metabolize-pahs-and-aromatic-root-exudates-implications-for-rhizodegradation
#16
Cairn S Ely, Barth F Smets
The chemical interaction between plants and bacteria in the root zone can lead to soil decontamination. Bacteria which degrade PAHs have been isolated from the rhizospheres of plant species with varied biological traits, however, it is not known what phytochemicals promote contaminant degradation. One monocot and two dicotyledon plants were grown in PAH-contaminated soil from a manufactured gas plant (MGP) site. A phytotoxicity assay confirmed greater soil decontamination in rhizospheres when compared to bulk soil controls...
March 20, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28275304/subclinical-atherosclerosis-is-linked-to-small-intestinal-bacterial-overgrowth-via-vitamin-k2-dependent-mechanisms
#17
Francesca Romana Ponziani, Maurizio Pompili, Enrico Di Stasio, Maria Assunta Zocco, Antonio Gasbarrini, Roberto Flore
AIM: To assess the rate of matrix Gla-protein carboxylation in patients with small intestinal bacterial overgrowth (SIBO) and to decipher its association with subclinical atherosclerosis. METHODS: Patients with suspected SIBO who presented with a low risk for cardiovascular disease and showed no evidence of atherosclerotic plaques were included in the study. A glucose breath test was performed in order to confirm the diagnosis of SIBO and vascular assessment was carried out by ultrasound examination...
February 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28260684/polycyclic-aromatic-hydrocarbons-bioavailability-in-industrial-and-agricultural-soils-linking-spme-and-tenax-extraction-with-bioassays
#18
Meixia Guo, Zongqiang Gong, Xiaojun Li, Graeme Allinson, James Rookes, David Cahill
The aims of this study were to evaluate the bioavailability of polycyclic aromatic hydrocarbons (PAHs) in industrial and agricultural soils using chemical methods and a bioassay, and to study the relationships between the methods. This was conducted by comparing the quantities of PAHs extracted from two manufactured gas plant (MGP) soils and an agricultural soil with low level contamination by solid-phase micro-extraction (SPME) and Tenax-TA extraction with the quantities taken up by the earthworm (Eisenia fetida)...
March 2, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28222767/knockdown-of-slc41a1-magnesium-transporter-promotes-mineralization-and-attenuates-magnesium-inhibition-during-osteogenesis-of-mesenchymal-stromal-cells
#19
Yu-Tzu Tsao, Ya-Yi Shih, Yu-An Liu, Yi-Shiuan Liu, Oscar K Lee
BACKGROUND: Magnesium is essential for numerous physiological functions. Magnesium exists mostly in bone and the amount is dynamically regulated by skeletal remodeling. Accelerating bone mass loss occurs when magnesium intake is insufficient; whereas high magnesium could lead to mineralization defects. However, the underlying magnesium regulatory mechanisms remain elusive. In the present study, we investigated the effects of high extracellular magnesium concentration on osteogenic differentiation of mesenchymal stromal/stem cells (MSCs) and the role of magnesium transporter SLC41A1 in the mineralization process...
February 21, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28192277/cdkn2a-p16ink4-a-expression-is-associated-with-vascular-progeria-in-chronic-kidney-disease
#20
Peter Stenvinkel, Karin Luttropp, Dagmara McGuinness, Anna Witasp, Abdul Rashid Qureshi, Annika Wernerson, Louise Nordfors, Martin Schalling, Jonaz Ripsweden, Lars Wennberg, Magnus Söderberg, Peter Bárány, Hannes Olauson, Paul G Shiels
Patients with chronic kidney disease (CKD) display a progeric vascular phenotype linked to apoptosis, cellular senescence and osteogenic transformation. This has proven intractable to modelling appropriately in model organisms. We have therefore investigated this directly in man, using for the first time validated cellular biomarkers of ageing (CDKN2A/p16(INK4a), SA-β-Gal) in arterial biopsies from 61 CKD patients undergoing living donor renal transplantation. We demonstrate that in the uremic milieu, increased arterial expression of CDKN2A/p16(INK4a) associated with vascular progeria in CKD, independently of chronological age...
February 9, 2017: Aging
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