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https://www.readbyqxmd.com/read/28110486/spectra-optia-%C3%A2-for-automated-red-blood-cell-exchange-in-patients-with-sickle-cell-disease-a-nice-medical-technology-guidance
#1
REVIEW
Iain Willits, Helen Cole, Roseanne Jones, Kimberley Carter, Mick Arber, Michelle Jenks, Joyce Craig, Andrew Sims
The Spectra Optia(®) automated apheresis system, indicated for red blood cell exchange in people with sickle cell disease, underwent evaluation by the National Institute for Health and Care Excellence, which uses its Medical Technologies Advisory Committee to make recommendations. The company (Terumo Medical Corporation) produced a submission making a case for adoption of its technology, which was critiqued by the Newcastle and York external assessment centre. Thirty retrospective observational studies were identified in their clinical submission...
January 21, 2017: Applied Health Economics and Health Policy
https://www.readbyqxmd.com/read/28110452/comparison-of-trace-elements-in-size-fractionated-particles-in-two-communities-with-contrasting-socioeconomic-status-in-houston-tx
#2
Inkyu Han, Yuncan Guo, Masoud Afshar, Thomas H Stock, Elaine Symanski
Levels of ambient air pollutants, including particulate matter (PM), are often higher in low-socioeconomic status (SES) communities than in high-SES communities. Houston is the fourth largest city in the USA and is home to a large petrochemical industry, an active port, and congested roadways, which represent significant emission sources of air pollution in the region. To compare levels of air pollution between a low-SES and a high-SES community, we simultaneously collected a 7-day integrated size-fractionated PM between June 2013 and November 2013...
February 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28110367/accurate-simultaneous-quantification-of-liver-steatosis-and-iron-overload-in-diffuse-liver-diseases-with-mri
#3
Manuela França, Ángel Alberich-Bayarri, Luis Martí-Bonmatí, Pedro Oliveira, Francisca Emanuel Costa, Graça Porto, José Ramón Vizcaíno, Javier Sanchez Gonzalez, Eduardo Ribeiro, João Oliveira, Helena Pessegueiro Miranda
PURPOSE: To evaluate the diagnostic performances of 3 Tesla multi-echo chemical shift-encoded gradient echo magnetic resonance (MECSE-MR) imaging to simultaneously quantify liver steatosis and iron overload in a wide spectrum of diffuse liver diseases having biopsy as reference standard. METHODS: MECSE-MR-acquired images were used to calculate fat fraction and iron content in a single breath-hold in 109 adult patients. Proton density fat fraction (PDFF) was prospectively estimated using complex-based data reconstruction with multipeak fat modeling...
January 21, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28110278/a-portrait-of-the-c4-photosynthetic-family-on-the-50th-anniversary-of-its-discovery-species-number-evolutionary-lineages-and-hall-of-fame
#4
REVIEW
Rowan F Sage
Fifty years ago, the C4 photosynthetic pathway was first characterized. In the subsequent five decades, much has been learned about C4 plants, such that it is now possible to place nearly all C4 species into their respective evolutionary lineages. Sixty-one independent lineages of C4 photosynthesis are identified, with additional, ancillary C4 origins possible in 12 of these principal lineages. The lineages produced ~8100 C4 species (5044 grasses, 1322 sedges, and 1777 eudicots). Using midpoints of stem and crown node dates in their respective phylogenies, the oldest and most speciose C4 lineage is the grass lineage Chloridoideae, estimated to be near 30 million years old...
January 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28110234/effect-of-ethylenediamine-n-n-disuccinic-acid-edds-on-the-speciation-and-bioavailability-of-fe-2-in-the-presence-of-sulfide-in-anaerobic-digestion
#5
Pham Minh Thanh, Balachandran Ketheesan, Zhou Yan, David Stuckey
The effects of a biodegradable chelating agent, Ethylenediamine-N,N'-disuccinic acid (EDDS), on the speciation and bioavailability of iron (Fe(2+)) in anaerobic digestion were examined. Fe(2+) supplementation at 10mg/L increased methane yield, but the presence of 8mg/L sulfide led to the precipitation of Fe(2+) as FeS which limited its bioavailability. The results confirmed that the EDDS could replace common chelating agents with low biodegradability (EDTA and NTA), and improve the bioavailability of Fe(2+) by forming an Fe-EDDS complex, thereby protecting Fe(2+) from sulfide precipitation...
January 4, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28110161/citrate-and-albumin-facilitate-transferrin-iron-loading-in-the-presence-of-phosphate
#6
Catalina Matias, Devin W Belnap, Michael T Smith, Michael G Stewart, Isaac F Torres, Andrew J Gross, Richard K Watt
Labile plasma iron (LPI) is redox active, exchangeable iron that catalyzes the formation of reactive oxygen species. Serum transferrin binds iron in a non-exchangeable form and delivers iron to cells. In several inflammatory diseases serum LPI increases but the reason LPI forms is unknown. This work evaluates possible pathways leading to LPI and examines potential mediators of apo transferrin iron loading to prevent LPI. Previously phosphate was shown to inhibit iron loading into apo transferrin by competitively binding free Fe(3+)...
December 11, 2016: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28110159/manganese-intake-is-inversely-associated-with-depressive-symptoms-during-pregnancy-in-japan-baseline-data-from-the-kyushu-okinawa-maternal-and-child-health-study
#7
Yoshihiro Miyake, Keiko Tanaka, Hitomi Okubo, Satoshi Sasaki, Shinya Furukawa, Masashi Arakawa
BACKGROUND: One epidemiological study in Canada has addressed the association between zinc intake and depressive symptoms during pregnancy while another epidemiological study in Korea has examined the association between iron intake and depressive symptoms during pregnancy. The present cross-sectional study in Japan examined the association between intake of zinc, magnesium, iron, copper, and manganese and depressive symptoms during pregnancy. METHODS: Study subjects were 1745 pregnant women...
January 15, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28110094/colonic-pseudopolyps-resulting-in-iron-deficiency-anemia
#8
Robert Hirten, Benjamin L Cohen, Jean-Frederic Colombel
No abstract text is available yet for this article.
January 18, 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28110038/enhancement-of-magnetofection-efficiency-using-chitosan-coated-superparamagnetic-iron-oxide-nanoparticles-and-calf-thymus-dna
#9
Z Sohrabijam, M Saeidifar, A Zamanian
Superparamagnetic iron oxide nanoparticles (MNPs) were prepared and coated with chitosan (CS). The chitosan-magnetic iron oxide nanoparticles (CS-MNPs) were characterized using Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), vibrating sample magnetometry (VSM), and the morphology of the particles was studied by transmission electron microscopy (TEM). Our findings show that the magnetic particles were monodisperse (10nm mean diameter) and exhibited superparamagnetic behavior. The interaction between the particles and calf-thymus DNA (DNA) in physiological buffer was studied with UV-vis, fluorescence and circular dichroism spectroscopy and zeta potential...
January 17, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28110010/dietary-exposure-to-toxic-and-essential-trace-elements-by-consumption-of-wild-and-farmed-carp-cyprinus-carpio-and-caspian-kutum-rutilus-frisii-kutum-in-iran
#10
Ali Heshmati, Javad Karami-Momtaz, Amir Nili-Ahmadabadi, Sabah Ghadimi
This study was conducted to determine and compare the concentrations of mercury (Hg), cadmium (Cd), arsenic (As), lead (Pb), nickel (Ni), iron (Fe), zinc (Zn), copper (Cu), manganese (Mn), cobalt (Co), and selenium (Se) in the muscle of wild and farmed carp (Cyprinus carpio) and wild and farmed Caspian kutum (Rutilus frisii kutum) collected from south-western Caspian Sea areas of Iran between December 2014 and March 2015. In addition, risk assessment of consumers to exposure to metals through fish consumption was estimated...
January 5, 2017: Chemosphere
https://www.readbyqxmd.com/read/28109988/epilepsy-and-restless-legs-syndrome
#11
James D Geyer, Emery E Geyer, Zachary Fetterman, Paul R Carney
OBJECTIVE: Restless legs syndrome (RLS) is a common neurological movement disorder occurring in approximately 10% of the general population. The prevalence of moderately severe RLS is 2.7% overall (3.7% for women and 1.7% for men). Epilepsy is also a common neurological disorder with significant associated morbidity and impact on quality of life. We evaluated the severity and frequency of primary RLS in patients with localization-related temporal lobe epilepsy (TLE) and investigated the role of prodromal RLS symptoms as a warning sign and lateralizing indicator...
January 18, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28109884/crystal-structure-and-biochemical-features-of-dye-decolorizing-peroxidase-yfex-from-escherichia-coli-o157-asp-143-and-arg-232-play-divergent-roles-toward-different-substrates
#12
Xiuhua Liu, Zenglin Yuan, Jiaxu Wang, Yaqi Cui, Shuang Liu, Yinliang Ma, Lichuan Gu, Sujuan Xu
YfeX from Escherichia coli O157 is a bacterial dye-decolorizing peroxidase that represents both dye-decoloring activity and typical peroxidase activity. We reported the crystal structure of YfeX bound to heme at 2.09 Å resolution. The YfeX monomer resembles a ferredoxin-like fold and contains two domains. The three conserved residues surrounding the heme group are His(215), Asp(143) and Arg(232). His(215) functions as the proximal axial ligand of the heme iron atom. Biochemical data show that the catalytic significance of the conserved Asp(143) and Arg(232) depends on the substrate types and that YfeX may adopt various catalytic mechanisms toward divergent substrates...
January 18, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28109878/crystal-structure-of-pvdo-from-pseudomonas-aeruginosa
#13
Zenglin Yuan, Fei Gao, Guohui Bai, Hengchuan Xia, Lichuan Gu, Sujuan Xu
Pyoverdine I (PVDI) is a water-soluble fluorescein siderophore with strong iron chelating ability from the gram-negative pathogen Pseudomonas aeruginosa PAO1. Compared to common siderophores, PVDI is a relatively large compound whose synthesis requires a group of enzymes with different catalytic activities. In addition to four nonribosomal peptide synthetases (NRPS) which are responsible for the production of the peptide backbone of PVDI, several additional enzymes are associated with the modification of the side chains...
January 18, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28109242/local-spin-dynamics-of-iron-oxide-magnetic-nanoparticles-dispersed-in-different-solvents-with-variable-size-and-shape-a-1-h-nmr-study
#14
M Basini, T Orlando, P Arosio, M F Casula, D Espa, S Murgia, C Sangregorio, C Innocenti, A Lascialfari
Colloidal magnetic nanoparticles (MNPs) based on a nearly monodisperse iron oxide core and capped by oleic acid have been used as model systems for investigating the superparamagnetic spin dynamics by means of magnetometry measurements and nuclear magnetic resonance ((1)H NMR) relaxometry. The key magnetic properties (saturation magnetization, coercive field, and frequency dependent "blocking" temperature) of MNPs with different core size (3.5 nm, 8.5 nm, and 17.5 nm), shape (spherical and cubic), and dispersant (hexane and water-based formulation) have been determined...
January 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28109029/reproductive-performance-of-breeder-quails-fed-diets-supplemented-with-l-cysteine-coated-iron-oxide-nanoparticles
#15
H Mohammadi, A Farzinpour, A Vaziry
The objective of this study was to investigate the effects of L-cysteine-coated iron oxide nanoparticles on reproductive performance in breeder quails. The five treatment diets consisted of (i) negative control diet not supplemented with iron, (ii) positive control diet supplemented with 60 mg/kg of Fe3 O4 and (iii) experimental diets supplemented with 0.6, 6 and 60 mg/kg of L-cysteine-coated iron oxide nanoparticles. A total of 100 seven-day-old quail chicks were weighed and randomly placed to five groups of five replicate cages...
January 20, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28108923/adsorption-of-nickel-ions-by-oleate-modified-magnetic-iron-oxide-nanoparticles
#16
Cécilia Magnet, Claire Lomenech, Charlotte Hurel, Pierre Reilhac, Françoise Giulieri, Anne-Marie Chaze, Jacques Persello, Pavel Kuzhir
In this work, magnetic nanoparticles of iron oxide (MNPs) were synthesized, and then the surface was recovered with an oleate double layer in order to investigate the ability of this material to adsorb nickel ions. First, the solution chemistry of oleate ions was investigated in order to determine the critical micellar concentration (CMC) value and the arrangements of ions above the CMC. Then, the synthesized oleate-modified MNP was characterized (TEM, DLS, XRD, FTIR, zeta potential, magnetometry). Finally, adsorption experiments were carried out as a function of pH and as a function of nickel concentration in 0...
January 20, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28108753/release-of-free-amino-acids-upon-oxidation-of-peptides-and-proteins-by-hydroxyl-radicals
#17
Fobang Liu, Senchao Lai, Haijie Tong, Pascale S J Lakey, Manabu Shiraiwa, Michael G Weller, Ulrich Pöschl, Christopher J Kampf
Hydroxyl radical-induced oxidation of proteins and peptides can lead to the cleavage of the peptide, leading to a release of fragments. Here, we used high-performance liquid chromatography tandem mass spectrometry (HPLC-MS/MS) and pre-column online ortho-phthalaldehyde (OPA) derivatization-based amino acid analysis by HPLC with diode array detection and fluorescence detection to identify and quantify free amino acids released upon oxidation of proteins and peptides by hydroxyl radicals. Bovine serum albumin (BSA), ovalbumin (OVA) as model proteins, and synthetic tripeptides (comprised of varying compositions of the amino acids Gly, Ala, Ser, and Met) were used for reactions with hydroxyl radicals, which were generated by the Fenton reaction of iron ions and hydrogen peroxide...
January 20, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28108264/iron-accumulation-and-microglia-activation-contribute-to-substantia-nigra-hyperechogenicity-in-the-6-ohda-induced-rat-model-of-parkinson-s-disease
#18
Yaqin Zhu, Bao Wang, Kai Tao, Hengli Yang, Yixiao Wang, Tian Zhou, Yilin Yang, Lijun Yuan, Xi Liu, Yunyou Duan
INTRODUCTION: This study aims to explain the mechanisms for the formation of sonographic features of Parkinson's disease (PD) using a 6-hydroxydopamine (6-OHDA) rat model of PD. The iron chelator deferiprone (DFP) was used in the PD model rat to examine the relationship between iron and the echo signal. METHODS: Rat models were created using stereotactic injections of 6-OHDA. DFP was administered intragastrically. Transcranial sonography (TCS) was performed to observe the substantia nigra (SN) echo signal of the brain...
January 6, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28107976/sensitive-fluorescent-detection-of-h2o2-and-glucose-in-human-serum-based-on-inner-filter-effect-of-squaric-acid-iron-iii-on-the-fluorescence-of-upconversion-nanoparticle
#19
Hongyu Chen, Aijin Fang, Li He, Youyu Zhang, Shouzhuo Yao
Diabetes mellitus is an epidemic disease that it has became a worldwide public health problem. Thus, blood glucose monitoring has attracted extensive attention. Here, we report a nanosensor based on inner filter effect (IFE) between upconversion nanoparticles (UCNPs) and squaric acid (SQA)-iron(III) for the highly sensitive and selective detection of glucose levels in human serum. In this assay, GOx-catalyzed oxidization of glucose produces gluconic acid and hydrogen peroxide (H2O2). The latter can catalytically oxidize iron(II) to iron(III) which can rapidly (<1min) coordinate with the SQA to produce (SQA)-iron(III)...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28107901/high-peroxidase-like-activity-of-iron-and-nitrogen-co-doped-carbon-dots-and-its-application-in-immunosorbent-assay
#20
Weiqiang Yang, TingTing Huang, Mengmeng Zhao, Fang Luo, Wen Weng, Qiaohua Wei, Zhenyu Lin, Guonan Chen
Herein, iron and nitrogen co-doped carbon dots (Fe-N-CDs) were synthesized through a solvothermal method assisting with the microwave synthesis system for the first time. Multiple techniques were employed to characterize the properties of the obtained particles. The emphasis of current work was the confirmation of their intrinsic peroxidase activity due to the Fe doping, which is similar to natural ferriporphyrin. Through catalyzing the oxidization of 3,3',5,5'-Tetramethylbenzidine (TMB) in the presence of H2O2, the Fe-N-CDs exhibited a superior catalytic performance over horseradish peroxidase (HRP), suggesting their potential applications in catalytic area...
March 1, 2017: Talanta
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