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https://www.readbyqxmd.com/read/29241212/serum-magnesium-abnormality-and-influencing-factors-of-serum-magnesium-level-in-peritoneal-dialysis-patients-a-single-center-study-in-northern-china
#1
Shihming Tsai, Huiping Zhao, Bei Wu, Li Zuo, Mei Wang
BACKGROUND/AIMS: Both hypomagnesemia and hypermagnesemia have been associated with cardiovascular diseases, bone diseases, and mortality in dialysis patients. We aimed to investigate the prevalence of and influencing factors for abnormal serum Mg levels in patients on peritoneal dialysis (PD). METHODS: A cross-sectional study in Peking University People's Hospital recorded the demographic information, clinical characteristics, and laboratory data. Data were assessed and compared with the results from 2 other studies in China...
December 14, 2017: Blood Purification
https://www.readbyqxmd.com/read/29241132/cadmium-mobility-uptake-and-anti-oxidative-response-of-water-spinach-ipomoea-aquatic-under-rice-straw-biochar-zeolite-and-rock-phosphate-as-amendments
#2
Saqib Bashir, Jun Zhu, Qingling Fu, Hongqing Hu
Agricultural soils contamination with cadmium (Cd) has become a serious concern through anthropogenic activities. The possible environmental friendly solutions for Cd are required to address its mobility through various cost effective amendments. This study aims to evaluate the impact of rice straw biochar (BC), zeolite (ZE) and rock phosphate (RP) stabilizers to minimize the potential risk of Cd mobility and its uptake by water spinach in acidic soil through pot experiment. Concentration of Cd in TCLP and CaCl2 extract gradually decreased with the increase of amendments (BC, ZE and RP) rates...
November 29, 2017: Chemosphere
https://www.readbyqxmd.com/read/29241124/struvite-formation-and-decomposition-characteristics-for-ammonia-and-phosphorus-recovery-a-review-of-magnesium-ammonia-phosphate-interactions
#3
REVIEW
Berrin Tansel, Griffin Lunn, Oscar Monje
Struvite (MgNH4PO4·6H2O) forms in aqueous systems with high ammonia and phosphate concentrations. However, conditions that result into struvite formation are highly dependent on the ionic compositions, temperature, pH, and ion speciation characteristics. The primary ions involved in struvite formation have complex interactions and can form different crystals depending on the ionic levels, pH and temperature. Struvite as well as struvite analogues (with substitution of monovalent cations for NH4+ or divalent cations for Mg2+) as well as other crystals can form simultaneously and result in changes in crystal morphology during crystal growth...
December 5, 2017: Chemosphere
https://www.readbyqxmd.com/read/29241092/trehalose-protects-against-oxidative-stress-by-regulating-the-keap1-nrf2-and-autophagy-pathways
#4
Yuhei Mizunoe, Masaki Kobayashi, Yuka Sudo, Shukoh Watanabe, Hiromine Yasukawa, Daiki Natori, Ayana Hoshino, Arisa Negishi, Naoyuki Okita, Masaaki Komatsu, Yoshikazu Higami
Dysfunction of autophagy, which regulates cellular homeostasis by degrading organelles and proteins, is associated with pathogenesis of various diseases such as cancer, neurodegeneration and metabolic disease. Trehalose, a naturally occurring nontoxic disaccharide found in plants, insects, microorganisms and invertebrates, but not in mammals, was reported to function as a mechanistic target of the rapamycin (mTOR)-independent inducer of autophagy. In addition, trehalose functions as an antioxidant though its underlying molecular mechanisms remain unclear...
September 20, 2017: Redox Biology
https://www.readbyqxmd.com/read/29241080/paternal-urinary-concentrations-of-organophosphate-flame-retardant-metabolites-fertility-measures-and-pregnancy-outcomes-among-couples-undergoing-in-vitro-fertilization
#5
Courtney C Carignan, Lidia Mínguez-Alarcón, Paige L Williams, John D Meeker, Heather M Stapleton, Craig M Butt, Thomas L Toth, Jennifer B Ford, Russ Hauser
BACKGROUND: Use of organophosphate flame retardants (PFRs) has increased over the past decade following the phase out of some brominated flame retardants, leading to increased human exposure. We recently reported that increasing maternal PFR exposure is associated with poorer pregnancy outcomes among women from a fertility clinic. Because a small epidemiologic study previously reported an inverse association between male PFR exposures and sperm motility, we sought to examine associations of paternal urinary concentrations of PFR metabolites and their partner's pregnancy outcomes...
December 11, 2017: Environment International
https://www.readbyqxmd.com/read/29241066/agronomic-efficiency-of-phosphate-fertilizers-produced-by-the-re-use-of-a-metallurgical-acid-residue
#6
Matheus Sampaio Carneiro Barreto, Edson Marcio Mattiello, Wedisson Oliveira Santos, Leônidas Carrijo Azevedo Melo, Leonardus Vergütz, Roberto Ferreira Novais
The production of fertilizers with industrial wastes reduces the environmental impacts of waste disposal and improves environmental sustainability by generating added-value products. Our objective with this study was to evaluate the agronomic performance and potential soil/plant contamination with heavy metals of alternative phosphate (P) fertilizers, obtained from the acidulation of phosphate rocks (PR) by a metallurgical acidic waste. Seven P fertilizers were evaluated: three PR (Araxá, Patos, and Bayóvar), their respective acidulated products (PAPR), and triple superphosphate fertilizer (TSP)...
December 11, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/29241052/hydroxyapatite-chitosan-based-bioactive-hybrid-biomaterials-with-improved-mechanical-strength
#7
A Zima
Composites consisting of hydroxyapatite (HA) and chitosan (CTS) have recently been intensively studied. In this work, a novel inorganic-organic (I/O) HA/CTS materials in the form of granules were prepared through a simple solution-based chemical method. During the synthesis of these hybrids, the electrostatic complexes between positively charged, protonated amine groups of chitosan and the negative phosphate species (HPO42- and H2PO4-) were formed. Our biocomposites belong to the class I of hybrids, which was confirmed by FTIR studies...
December 5, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29240752/effect-of-early-dietary-energy-restriction-and-phosphorus-level-on-subsequent-growth-performance-intestinal-phosphate-transport-and-ampk-activity-in-young-broilers
#8
Zhiqiang Miao, Guixian Zhang, Junzhen Zhang, Jianhui Li, Yu Yang
We aimed to determine the effect of low dietary energy on intestinal phosphate transport and the possible underlying mechanism to explain the long-term effects of early dietary energy restriction and non-phytate phosphorus (NPP). A 2 × 3 factorial experiment, consisting of 2 energy levels and 3 NPP levels, was conducted. Broiler growth performance, intestinal morphology in 0-21 days and 22-35 days, type IIb sodium-phosphate co-transporter (NaPi-IIb) mRNA expression, adenylate purine concentrations in the duodenum, and phosphorylated adenosine monophosphate-activated protein kinase (AMPK-α) activity in 0-21 days were determined...
2017: PloS One
https://www.readbyqxmd.com/read/29240673/urinary-fractional-excretion-of-phosphorus-in-dogs-with-spontaneous-chronic-kidney-disease
#9
Cínthia Ribas Martorelli, Márcia Mery Kogika, Fernanda Chicharo Chacar, Douglas Segalla Caragelasco, Ana Carolina Brandão de Campos Fonseca Pinto, Carla Aparecida Batista Lorigados, Lúcia Conceição Andrade
The increase of urinary fractional excretion of phosphorus (uFEP) may indicate phosphorus retention before the onset of hyperphosphatemia in the early stages of chronic kidney disease (CKD). The hypothesis of this study is whether uFEP may increase during the early stage of CKD as a compensatory mechanism to prevent hyperphosphatemia as well as whether hyperphosphatemia in the late stages is associated with increase or decrease in uFEP in dogs with naturally occurring CKD; therefore, the aim of this study was to determine the uFEP in CKD dogs with different stages...
December 14, 2017: Veterinary Sciences
https://www.readbyqxmd.com/read/29240263/cytochemical-flow-analysis-of-intracellular-g6pd-and-aggregate-analysis-of-mosaic-g6pd-expression
#10
Michael Kalnoky, Germana Bancone, Maria Kahn, Cindy S Chu, Nongnud Chowwiwat, Pornpimon Wilaisrisak, Sampa Pal, Nicole LaRue, Brandon Leader, Francois Nosten, Gonzalo J Domingo
BACKGROUND: Medicines that exert oxidative pressure on red blood cells (RBC) can cause severe hemolysis in patients with glucose-6-phosphate dehydrogenase (G6PD) deficiency. Due to X-chromosome inactivation, females heterozygous for G6PD with one allele encoding a G6PD deficient protein and the other a normal protein produce two RBC populations each expressing exclusively one allele. The G6PD mosaic is not captured with routine G6PD tests. METHODS: An open-source software tool for G6PD cytofluorometric data interpretation is described...
December 14, 2017: European Journal of Haematology
https://www.readbyqxmd.com/read/29240245/structure-and-composition-of-unio-pictorum-shell-arguments-for-the-diversity-of-the-nacroprismatic-arrangement-in-molluscs
#11
Y Dauphin, G Luquet, M Salome, L Bellot-Gurlet, J P Cuif
Mollusc shells are complex organomineral structures, the arrangement and composition depending on the species. Most studies are dedicated to shells composed of an aragonite nacreous and a calcite prismatic layer, so the nacreous prismatic model based on Pinctada and Atrina-Pinna. Here, we studied the micro- and nanostructure, the mineralogy and composition of a nacroprismatic bivalve species: Unio pictorum. The prismatic layer of Unio is aragonite, and the inner structure of the prismatic units strongly differs from those of the calcitic layers...
December 14, 2017: Journal of Microscopy
https://www.readbyqxmd.com/read/29240243/fabrication-and-evaluation-of-3d-printed-bcp-scaffolds-reinforced-with-zro2-for-bone-tissue-applications
#12
Min-Woo Sa, Bao-Ngoc B Nguyen, Rebecca A Moriarty, Timur Kamalitdinov, John P Fisher, Jong Young Kim
Fused deposition modeling (FDM) is a promising 3D printing and manufacturing step to create well interconnected porous scaffold designs from the computer-aided design (CAD) models for the next generation of bone scaffolds. The purpose of this study was to fabricate and evaluate a new biphasic calcium phosphate (BCP) scaffold reinforced with zirconia (ZrO2 ) by a FDM system for bone tissue engineering. The 3D slurry foams with blending agents were successfully fabricated by a FDM system. Blending materials were then removed after the sintering process at high temperature to obtain a targeted BCP/ZrO2 scaffold with the desired pore characteristics, porosity, and dimension...
December 14, 2017: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/29240197/self-tuning-optical-resonator
#13
Joanna A Zielińska, Morgan W Mitchell
We demonstrate a nonlinear optical resonator that tunes itself onto resonance with an input beam. In a monolithic Fabry-Perot cavity implemented in rubidium-doped periodically poled potassium titanyl phosphate, an intensity-dependent refractive index produces line pulling by multiple free-spectral ranges (FSRs). In this condition, the cavity passively maintains optical resonance in the face of FSR-scale excursions of the drive laser frequency: when one resonant operating point becomes unstable, the resonator rapidly transitions to another resonant operating point...
December 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/29239940/prolonged-duration-local-anesthesia-using-liposomal-bupivacaine-combined-with-liposomal-dexamethasone-and-dexmedetomidine
#14
Alina Y Rwei, Robert T Sherburne, David Zurakowski, Bruce Wang, Daniel S Kohane
BACKGROUND: The relatively short duration of effect of local anesthetics has been addressed by encapsulation in drug delivery systems. Codelivery with a single compound that produces an adjuvant effect on nerve block but without intrinsic local anesthetic properties can further prolong the nerve block effect. Here, we investigated whether codelivery of more than 1 encapsulated adjuvant compound can further enhance nerve blockade. METHODS: Liposomes loaded with bupivacaine (Bup), dexamethasone phosphate (DexP), or dexmedetomidine (DMED) were synthesized and its in vitro drug release profiles were determined...
December 11, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29239682/safety-and-immunogenicity-of-a-seasonal-trivalent-inactivated-split-influenza-vaccine-a-phase-i-randomized-clinical-trial-in-healthy-serbian-adults
#15
Goran Stevanovic, Lidija Lavadinovic, Svetlana Filipovic Vignjevic, Renée Holt, Katarina Ilic, Francesco Berlanda Scorza, Erin Sparrow, Vera Stoiljkovic, Guido Torelli, Tamra Madenwald, Muriel Socquet, Aleksandra Barac, Yordanka Ilieva-Borisova, Mijomir Pelemis, Jorge Flores
This study was a phase I double-blind, randomized, placebo-controlled trial to evaluate the safety and immunogenicity of a Serbian-produced seasonal trivalent split, inactivated influenza vaccine in healthy adults. The vaccine was manufactured in eggs by the Torlak Institute of Virology, Vaccines and Sera, Belgrade, Serbia and contained A/H1N1, A/H3N2 and B viruses. The clinical trial took place at the Clinical Center of Serbia in Belgrade. Sixty healthy volunteers, aged 18-45 years, were enrolled in the trial...
December 14, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/29239473/polyamines-regulating-phytic-acid-degradation-in-mung-bean-sprouts
#16
Ting Zhou, Pei Wang, Runqiang Yang, Zhenxin Gu
BACKGROUND: Polyamines are essentially involved in cell division and differentiation. Transport of polyamine is ATP dependent, while phytic acid is the major reserve of phosphate essential to the energy-producing machinery of cells. Thus, polyamines might enhance phytic acid degradation during mung bean germination. In this study, different polyamines [putrescine (Put), spermidine (Spd) and spermine (Spm)] and dicyclohexylamine (DCHA, a Spd synthesis inhibitor) were applied to investigate the function of polyamines on phytic acid degradation...
December 14, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29239110/association-of-prognostic-features-and-treatment-on-survival-time-of-dogs-with-systemic-mastocytosis-a-retrospective-analysis-of-40-dogs
#17
S J Moirano, S F Lima, K R Hume, E M Brodsky
Systemic mastocytosis is a rare phenomenon, with limited information regarding prognostic features and effective treatment of canine patients with this disease. The objective of this study is to determine the impact of certain features and treatments on dogs with systemic mastocytosis. The medical records of 40 dogs from 4 northeastern US veterinary hospitals, with evidence of systemic mast cell disease, were evaluated retrospectively. Variables analysed with relation to overall survival and prognostic significance included treatment protocol used, substage, presence of a cutaneous or visceral tumour, presence of multiple cutaneous Mast cell tumours, grade of the primary tumour and metastatic site(s)...
December 14, 2017: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/29239108/ultrasensitive-determination-of-highly-polar-trimethyl-phosphate-in-environmental-water-by-molecularly-imprinted-polymeric-fiber-headspace-solid-phase-microextraction
#18
Cuicui Cai, Pengcheng Zhang, Jiali Deng, Hongbin Zhou, Jing Cheng
A sensitive, accurate and cost effective method for the quantification of trimethyl phosphate, which is highly polar and volatile, in environmental water is presented. Trimethyl phosphate was headspace solid-phase microextracted on a molecularly imprinted polymeric fiber, and then the fiber was thermally desorbed in the gas chromatograph injector, and the compound was determined. The trimethyl phosphate imprinted polymeric fiber was prepared by copolymerization in a fused silica capillary tube and obtained by removal of the wall of fused silica capillary tube...
December 14, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/29238989/nanoparticle-delivery-of-rna-based-therapeutics-to-alter-the-vocal-fold-tissue-response-to-injury
#19
Nao Hiwatashi, Iv Kraja, Peter A Benedict, Gregory R Dion, Renjie Bing, Bernard Rousseau, Milan R Amin, Danielle M Nalband, Kent Kirshenbaum, Ryan C Branski
OBJECTIVES/HYPOTHESIS: Our laboratory and others hypothesized that Smad3 is a principle mediator of the fibrotic phenotype in the vocal folds (VFs), and we further posited that alteration of Smad3 expression through short interfering (si)RNA holds therapeutic promise, yet delivery remains challenging. To address this issue, we employed a novel synthetic oligomer, lipitoid, complexed with siRNA to improve stability and cellular uptake with the goal of increased efficiency of RNA-based therapeutics...
December 14, 2017: Laryngoscope
https://www.readbyqxmd.com/read/29238985/impaired-functional-vitamin-b6-status-is-associated-with-increased-risk-of-lung-cancer
#20
Despoina Theofylaktopoulou, Øivind Midttun, Per M Ueland, Klaus Meyer, Anouar Fanidi, Wei Zheng, Xiao-Ou Shu, Yong-Bing Xiang, Ross Prentice, Mary Pettinger, Cynthia A Thomson, Graham G Giles, Allison Hodge, Qiuyin Cai, William J Blot, Jie Wu, Mikael Johansson, Johan Hultdin, Kjell Grankvist, Victoria L Stevens, Marjorie M McCullough, Stephanie J Weinstein, Demetrius Albanes, Regina Ziegler, Neal D Freedman, Arnulf Langhammer, Kristian Hveem, Marit Naess, Howard D Sesso, J Michael Gaziano, Julie E Buring, I-Min Lee, Gianluca Severi, Xuehong Zhang, Meir J Stampfer, Jiali Han, Stephanie A Smith-Warner, Anne Zeleniuch-Jacquotte, Loic le Marchand, Jian-Min Yuan, Renwei Wang, Lesley M Butler, Woon-Puay Koh, Yu-Tang Gao, Nathaniel Rothman, Ulrika Ericson, Emily Sonestedt, Kala Visvanathan, Miranda R Jones, Caroline Relton, Paul Brennan, Mattias Johansson, Arve Ulvik
Circulating vitamin B6 levels have been found to be inversely associated with lung cancer. Most studies have focused on the B6 form pyridoxal 5'-phosphate (PLP), a direct biomarker influenced by inflammation and other factors. Using a functional B6 marker allows further investigation of the potential role of vitamin B6 status in the pathogenesis of lung cancer. We prospectively evaluated the association of the functional marker of vitamin B6 status, the 3-hydroxykynurenine:xanthurenic acid ratio (HK:XA), with risk of lung cancer in a nested case-control study consisting of 5,364 matched case control pairs from the Lung Cancer Cohort Consortium (LC3)...
December 14, 2017: International Journal of Cancer. Journal International du Cancer
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