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https://www.readbyqxmd.com/read/29149714/influence-of-fe-ii-on-the-se-iv-sorption-under-oxic-anoxic-conditions-using-bentonite
#1
Jiangang He, Yanlin Shi, Xiaoyu Yang, Wanqiang Zhou, Yao Li, Chunli Liu
(79)Se, one of the key radionuclides for nuclear waste disposal, threatens the quality of the environment, as well as human health. Therefore, it needs to be permanently isolated from the biosphere. The aim of the study was to investigate the effects of Fe(II)/Fe(III) on the removal of (79)Se using bentonite in the pH range of 2.0-10.0 under oxic/anoxic conditions. Under oxic conditions, Se(IV) prefers to form inner-sphere complexes with Fe(III)-oxyhydroxide, derived from the oxidization of Fe(II) using oxygen...
October 27, 2017: Chemosphere
https://www.readbyqxmd.com/read/29149437/a-blinded-randomized-placebo-controlled-study-to-investigate-the-efficacy-and-safety-of-ferric-carboxymaltose-in-iron-deficient-patients-with-fibromyalgia
#2
Chad S Boomershine, Todd A Koch, David Morris
INTRODUCTION: This study sought to compare efficacy and safety of ferric carboxymaltose vs. placebo in iron-deficient patients with fibromyalgia. METHODS: This blinded, placebo-controlled, phase 2 study randomized adults with fibromyalgia and Revised Fibromyalgia Impact Questionnaire (FIQR) scores ≥ 60, ferritin levels < 0.05 µg/ml, and transferrin saturation < 20% (1:1) to receive ferric carboxymaltose [15 mg/kg (up to 750 mg)], or placebo (15 cc normal saline) intravenously on study days 0 and 5...
November 17, 2017: Rheumatology and Therapy
https://www.readbyqxmd.com/read/29145730/screening-and-evaluation-of-antioxidant-activity-of-some-1-2-4-triazolo-1-5-a-quinazoline-derivatives
#3
Rashad Al-Salahi, El-Hassane Anouar, Mohamed Marzouk, Hanan Aa Taie, Hatem A Abuelizz
AIM: The present study was carried out to assess a new series of triazoloquinazolines 1-40 for their antioxidant activities using 1,1-diphenyl-2-picryl hydrazyl radical scavenging, ferric reduction antioxidant power and reducing power capability assays. RESULTS: All triazoloquinazolines 1-40 exhibited antioxidant activity ranged from weak to moderate and high. The obtained findings revealed that the triazoloquinazolines 30, 36 and 38-40 have superiority among all compounds, demonstrating the highest capacity to deplete 1,1-diphenyl-2-picryl hydrazyl and free radicals, in relation to butylated hydroxyl toluene, as a synthetic antioxidant agent...
November 17, 2017: Future Medicinal Chemistry
https://www.readbyqxmd.com/read/29145527/evaluation-of-operating-time-and-patient-perception-using-conventional-impression-taking-and-intraoral-scanning-for-crown-manufacture-a-split-mouth-randomized-clinical-study
#4
Yasser Haddadi, Golnosh Bahrami, Flemming Isidor
PURPOSE: To compare operating time and patient perception of conventional impression (CI) taking and intraoral scanning (IOS) for manufacture of a tooth-supported crown. MATERIALS AND METHODS: A total of 19 patients needing indirect full-coverage restorations fitting the requirements for a split-mouth design were recruited. Each patient received two lithium disilicate crowns, one manufactured from CI taking and one from IOS. Both teeth were prepared following the manufacturers' recommendations...
November 16, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/29143058/membrane-environment-drives-cytochrome-p450-s-spin-transition-and-its-interaction-with-cytochrome-b5
#5
Thirupathi Ravula, Carlo Barnaba, Mukesh Mahajan, G M Anantharamaiah, Sang-Choul Im, Lucy Waskell, Ayyalusamy Ramamoorthy
Heme's spin-multiplicity is key in determining the enzymatic function of cytochrome P450 (cytP450). The origin of the low-spin state in ferric P450 is still under debate. Here, we report the first experimental demonstration of P450's membrane interaction altering its spin equilibrium which is accompanied by a stronger affinity for cytochrome b5. These results highlight the importance of lipid membrane for the function of P450.
November 16, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/29142965/ferritin-elevation-and-improved-responsiveness-to-erythropoiesis-stimulating-agents-in%C3%A2-patients-on-ferric-citrate-hydrate
#6
Keitaro Yokoyama, Masafumi Fukagawa, Takashi Akiba, Masaaki Nakayama, Toshiya Otoguro, Kana Yamada, Yasuo Nagamine, Steven Fishbane, Hideki Hirakata
Introduction: In hemodialysis patients on ferric citrate hydrate, the increase in ferritin level is mainly due to the administration of the compound. We investigated possible other factors associated with ferritin level and how erythropoietin resistance index and erythropoiesis in those patients were affected. We looked at ferritin-elevating factors using data from a Japanese phase III long-term clinical trial of ferric citrate hydrate. Methods: The factors with a strong association with ferritin levels at week 28 were selected by the process of variable selection...
May 2017: KI Reports
https://www.readbyqxmd.com/read/29142438/molecular-simulation-based-combinatorial-modeling-and-antioxidant-activities-of-zingiberaceae-family-rhizomes
#7
Talambedu Usha, Sushen Pradhan, Arvind Kumar Goyal, Shanmugarajan Dhivya, H P Prashanth Kumar, Manoj Kumar Singh, Neelu Joshi, Bharat Chandra Basistha, K R Siddalinga Murthy, Saravanakumar Selvaraj, Sushil Kumar Middha
Objective: The main aim of this scientific report was to investigate a series of phytochemicals in silico and the pharmacology of four plants found at higher altitude in the ginger family, Zingiberaceae (incl. Costaceae) from North-East India, particularly Sikkim. First, the goal was to determine the biological activities of the four herbs (used under Zingiberaceae family) using antioxidant assays to identify the best species. Second, previously reported compounds in litero were subsequently screened for their anticancerous activities using in silico methods...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29142312/understanding-the-anticorrosive-protective-mechanisms-of-modified-epoxy-coatings-with-improved-barrier-active-and-self-healing-functionalities-eis-and-spectroscopic-techniques
#8
Demian I Njoku, Miaomiao Cui, Haigang Xiao, Baihui Shang, Ying Li
The present investigation adopted long-term in-situ electrochemical and spectroscopic approaches to study the combined active, self-healing and passive protective mechanisms of a new class of innovative anti-corrosive coatings based on epoxy doped with clay nanotubes impregnated with active species for the protection of carbon steel in 3.5% NaCl solution. The suitability of the as-received clay nanotubes to encapsulate the active agents was confirmed by different spectroscopic measurements. Tube end stopper with Ferric ion and polymer encapsulation with chitosan cross-linked with glutaraldehyde were adopted to tunnel the release of the active agents loaded into the nanotubes...
November 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29139323/jaboticaba-plinia-peruviana-extract-nanoemulsions-development-stability-and-in-vitro-antioxidant-activity
#9
Letícia Mazzarino, Heloísa da Silva Pitz, Ana Paula Lorenzen Voytena, Adriana Carla Dias Trevisan, Rosa Maria Ribeiro-Do-Valle, Marcelo Maraschin
OBJECTIVE: The aim of this work is to develop and characterize nanoemulsions containing jaboticaba extract (Plinia peruviana) aiming pharmaceutical and cosmetic applications. METHODS: Nanoemulsions were prepared by high-pressure homogenization method using different concentrations of components (oil, surfactant, and extract) and homogenization pressures, in order to optimize the preparation conditions. Both unloaded and extract-loaded nanoemulsions were characterized according their size, polydispersity, zeta potential, pH, morphology, and physical stability...
November 15, 2017: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/29138269/irreversible-activation-and-stabilization-of-soluble-guanylate-cyclase-by-the-protoporphyrin-ix-mimetic-cinaciguat
#10
Alexander Kollau, Marissa Opelt, Gerald Wölkart, Antonius C F Gorren, Michael Russwurm, Doris Koesling, Bernd Mayer, Astrid Schrammel
Belonging to the class of so-called sGC activators, cinaciguat and BAY 60-2770 are interesting therapeutic tools for the treatment of various cardiovascular pathologies. The drugs are supposed to preferentially stimulate oxidized or heme-depleted but not native sGC. Since this concept has been challenged by studies demonstrating complete relaxation of non-diseased vessels, this study was designed to re-investigate the mode of action in greater detail. To this purpose, the effect of cinaciguat was studied on vessel tone of porcine coronary arteries and rat thoracic aortas...
November 14, 2017: Molecular Pharmacology
https://www.readbyqxmd.com/read/29137789/sonochemical-synthesis-of-graphene-ce-tio2-and-graphene-fe-tio2-ternary-hybrid-photocatalyst-nanocomposite-and-its-application-in-degradation-of-crystal-violet-dye
#11
T P Shende, B A Bhanvase, A P Rathod, D V Pinjari, S H Sonawane
The present work deals with the preparation of graphene oxide (GO) using Hummers-Offeman method in the presence of ultrasonic irradiations. Further loading of TiO2 photocatalyst on prepared GO was accomplished which is basically oxidation reduction reaction between graphene oxide and titanium isopropoxide that leads to the formation of graphene-TiO2 nanocomposite. Graphene-Ce-TiO2 and Graphene-Fe-TiO2 nanocomposites were prepared using one step in-situ ultrasound assisted method using GO, titanium isopropoxide, cerium nitrate, ferric nitrate, and 2-propanol...
March 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29134606/intravenous-ferric-carboxymaltose-in-patients-with-type-2-diabetes-mellitus-and-iron-deficiency-clever-trial-study-design-and-protocol
#12
Christoph Schindler, Andreas L Birkenfeld, Markolf Hanefeld, Ulrike Schatz, Carsta Köhler, Martin Grüneberg, Diethelm Tschöpe, Matthias Blüher, Christoph Hasslacher, Stefan R Bornstein
INTRODUCTION: HbA1c is the gold standard for glycemic control in pre-diabetes and diabetes. However, its validity has been questioned, especially in the presence of imbalanced iron homeostasis. The CLEVER trial aims to evaluate the relationship between iron deficiency and HbA1c (a biomarker for the diagnosis and therapeutic monitoring of type 2 diabetes) in a randomized, placebo-controlled, multicenter clinical trial. METHODS: The CLEVER (intravenous ferric CarboxymaLtosE for improVement of mEtabolic parameters in type 2 diabetes patients with iRon deficiency) trial is a randomized, single-blind, proof-of-concept study with two treatment arms...
November 13, 2017: Diabetes Therapy: Research, Treatment and Education of Diabetes and related Disorders
https://www.readbyqxmd.com/read/29133393/sequential-induction-of-fur-regulated-genes-in-response-to-iron-limitation-in-bacillus-subtilis
#13
Hualiang Pi, John D Helmann
Bacterial cells modulate transcription in response to changes in iron availability. The ferric uptake regulator (Fur) senses intracellular iron availability and plays a central role in maintaining iron homeostasis in Bacillus subtilis Here we utilized FrvA, a high-affinity Fe(2+) efflux transporter from Listeria monocytogenes, as an inducible genetic tool to deplete intracellular iron. We then characterized the responses of the Fur, FsrA, and PerR regulons as cells transition from iron sufficiency to deficiency...
November 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29132911/antioxidant-anti-inflammatory-and-gastroprotective-activity-of-filipendula-ulmaria-l-maxim-and-filipendula-vulgaris-moench
#14
Stevan Samardžić, Jelena Arsenijević, Dragana Božić, Marina Milenković, Vele Tešević, Zoran Maksimović
ETHNOPHARMACOLOGICAL RELEVANCE: Meadowsweet (Filipendula ulmaria (L.) Maxim.) and dropwort (Filipendula vulgaris Moench) are herbaceous perennials employed in folk medicine for their antirheumatic, antipyretic and anti-ulcer properties. AIM OF THE STUDY: To assess ethnomedicinal claims through investigation of antioxidant, anti-inflammatory and gastroprotective effects of F. ulmaria and F. vulgaris lyophilized flower infusions (LFIs) as well as the F. vulgaris isolated flavonoids spiraeoside, kaempferol 4'-O-glucoside, astragalin 2''-O-gallate, mixture of hyperoside 2''-O-gallate and isoquercitrin 2''-O-gallate, and a tannin tellimagrandin II...
November 10, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29131314/electron-shuttling-to-ferrihydrite-selects-for-fermentative-rather-than-fe-3-reducing-biomass-in-xylose-fed-batch-reactors-derived-from-three-different-inoculum-sources
#15
Jovan Popovic, Kevin T Finneran
Reports suggest that ferric iron and electron shuttling molecules will select for Fe(3+) -reducer dominated microbial biomass. We investigated the influence of the redox mediators anthraquinone-2,6-disulfonate (AQDS) and riboflavin using xylose as the sole fermentation substrate, with or without ferric iron. Electron shuttling to insoluble ferrihydrite enhanced solventogenesis, acidogenesis, hydrogen production, and xylose consumption, relative to the cells plus xylose controls in fermentations inoculated with woodland marsh sediment, wetwood disease, or raw septic liquid, over multiple transfers in 15-day batch fermentations...
November 13, 2017: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/29129982/antioxidant-capacity-and-major-phenol-compounds-of-horticultural-plant-materials-not-usually-used
#16
Stina C M Burri, Anders Ekholm, Åsa Håkansson, Eva Tornberg, Kimmo Rumpunen
Horticultural plant materials not usually used from onion, carrot, beetroot, sea buckthorn, black and red currants as well as a wastewater powder from olive oil production were analyzed for total phenols content (FC), ferric reducing ability of plasma (FRAP), radical scavenging capacity (ABTS), and for major phenolic compounds by HPLC-MS. Antioxidant capacity and phenol content varied significantly between species and cultivars, with extracts of sea buckthorn leaves being superior. In different species, different phenolic compounds were closely associated with FRAP, ABTS and FC...
November 2017: Journal of Functional Foods
https://www.readbyqxmd.com/read/29128698/seminal-plasma-antioxidants-are-directly-involved-in-boar-sperm-cryotolerance
#17
Junwei Li, Isabel Barranco, Asta Tvarijonaviciute, Manuel F Molina, Emilio A Martinez, Heriberto Rodriguez-Martinez, Inmaculada Parrilla, Jordi Roca
Boar ejaculates are ejected in fractions with a specific composition in terms of sperm numbers and seminal plasma (SP), which is reflected in the varying sperm cryotolerance observed among different fractions. As boar sperm are particularly sensitive to oxidative stress, this study evaluated the role of SP antioxidants in the observed differences in sperm cryotolerance among ejaculate fractions. Ten ejaculates from five boars were manually collected in fractions: the first 10 mL of the sperm-rich fraction (SRF), the rest of the SRF and the post-SRF...
October 31, 2017: Theriogenology
https://www.readbyqxmd.com/read/29128590/synthesis-and-characterization-of-a-new-soluble-soybean-polysaccharide-iron-iii-complex-using-ion-exchange-column
#18
Wenhong Gao, Yangping Huang, Ruixue He, Xin-An Zeng
A new ion exchange column method was investigated to synthesize the soluble soybean polysaccharide-iron(III) complex (SSPS-FeIII(1)) using soluble soybean polysaccharides (SSPS). The feasibility of ion exchange column reaction was explored firstly. Results indicated the D730 anion macroporous adsorption resin could effectively absorb SSPS and the static adsorption saturation time was 20h. The iron content of the complex reached up to 15.07% when trisodium citrate concentration was 2mg/mL. The structure of SSPS-FeIII complex synthesized by this method (SSPS-FeIII1(2)) was compared with that prepared by trisodium citrate - ferric chloride method (SSPS-FeIII2(3))...
November 8, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29128226/camel-milk-protein-hydrolysates-with-improved-technofunctional-properties-and-enhanced-antioxidant-potential-in-in-vitro-and-in-food-model-systems
#19
Kholoud Awad Al-Shamsi, Priti Mudgil, Hassan Mohamed Hassan, Sajid Maqsood
Camel milk protein hydrolysates (CMPH) were generated using proteolytic enzymes, such as alcalase, bromelain, and papain, to explore the effect on the technofunctional properties and antioxidant potential under in vitro and in real food model systems. Characterization of the CMPH via degree of hydrolysis, sodium dodecyl sulfate-PAGE, and HPLC revealed that different proteins in camel milk underwent degradation at different degrees after enzymatic hydrolysis using 3 different enzymes for 2, 4, and 6 h, with papain displaying the highest degradation...
November 8, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/29128124/a-combination-of-ferric-nitrate-edds-enhanced-washing-and-sludge-derived-biochar-stabilization-of-metal-contaminated-soils
#20
Jong-Chan Yoo, Jingzi Beiyuan, Lei Wang, Daniel C W Tsang, Kitae Baek, Nanthi S Bolan, Yong Sik Ok, Xiang-Dong Li
In this study, soil washing and stabilization as a two-step soil remediation strategy was performed to remediate Pb- and Cu-contaminated soils from shooting range and railway sites. Ferric nitrate (Fe(NO3)3) and [S,S]-ethylenediamine disuccinate (EDDS) were used as washing agents, whereas three types of sludge-derived biochars and phosphogypsum were employed as soil stabilizers. While Fe(NO3)3 extracted larger amounts of metals compared to EDDS (84% Pb and 64% Cu from shooting range soil; 30% Pb and 40% Cu from railway site soil), it caused severe soil acidification...
November 8, 2017: Science of the Total Environment
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