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https://www.readbyqxmd.com/read/28724096/hydrology-and-soil-manipulations-of-iron-rich-ditch-mesocosms-provide-little-evidence-of-phosphorus-capture-within-the-profile
#1
David E Ruppert, Brian A Needelman, Peter J A Kleinman, Martin C Rabenhorst, Bahram Momen, David B Wester
Agricultural drainage ditches function as first-order streams and affect nutrient management. Soil mesocosms from a ditch featuring a vertical (increasing upward) gradient in iron (Fe) and phosphorus (P) were subjected to hydraulic and soil treatments. These manipulations mimicked aspects of dredging and controlled drainage and inspected the soil release and retention of P. Treatments did not remove P from simulated groundwater. Throughput water either gained in P (lack of dredging, especially under Fe-reducing conditions) or had P concentrations indistinguishable from input water (dredging)...
May 2017: Journal of Environmental Quality
https://www.readbyqxmd.com/read/28722565/high-iron-levels-are-associated-with-increased-malaria-risk-in-infants-during-the-first-year-of-life-in-benin
#2
Violeta Moya-Alvarez, Gilles Cottrell, Smaila Ouédraogo, Manfred Accrombessi, Achille Massougbodgi, Michel Cot
The World Health Organization (WHO) estimates that 40% of children in low-income countries are anemic. Therefore, iron supplements are recommended by WHO in areas with high anemia rates. However, some studies have set into question the benefits of iron supplementation in malaria-endemic regions. In Benin, a west African country with high prevalence of anemia and malaria, no iron supplements are given systematically to infants so far despite the WHO recommendations. In this context, we wanted to investigate the effect of iron levels during the first year of life on malarial risk in Benin considering complementary risk factors...
June 19, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28722486/neurotoxic-effects-of-subchronic-intratracheal-mn-nanoparticle-exposure-alone-and-in-combination-with-other-welding-fume-metals-in-rats
#3
Zsuzsanna Máté, Edina Horváth, András Papp, Krisztina Kovács, Etelka Tombácz, Dániel Nesztor, Tamás Szabó, Andrea Szabó, Edit Paulik
Manganese (Mn) is a toxic heavy metal exposing workers in various occupational settings and causing, among others, nervous system damage. Metal fumes of welding, a typical source of Mn exposure, contain a complex mixture of metal oxides partly in nanoparticle form. As toxic effects of complex substances cannot be sufficiently understood by examining its components separately, general toxicity and functional neurotoxicity of a main pathogenic welding fume metal, Mn, was examined alone and combined with iron (Fe) and chromium (Cr), also frequently found in fumes...
July 19, 2017: Inhalation Toxicology
https://www.readbyqxmd.com/read/28721756/lycopene-ameliorates-experimental-colitis-in-rats-via-reducing-apoptosis-and-oxidative-stress
#4
Burcu Gul Baykalir, Dilek Aksit, Mustafa Selim Dogru, Arzu Hanım Yay, Hasan Aksit, Kamil Seyrek, Ahmet Attesahin
Inflammatory bowel disease (IBD) is an inflammatory disorder involving colitis. Lycopene is a naturally occurring carotenoid that has attracted considerable attention as a potential chemopreventive agent. The impact of lycopene on colitis is currently unknown. The aim of this study was to investigate the protective effects of lycopene in a rat model of colitis induced by acetic acid. The animals were randomly divided into the following five groups: the control group, colitis group, colitis + sulfasalazine group as a positive control group, colitis + lycopene and lycopene groups...
July 19, 2017: International Journal for Vitamin and Nutrition Research. Journal International de Vitaminologie et de Nutrition
https://www.readbyqxmd.com/read/28720855/influence-of-cu-on-modifying-the-beta-phase-and-enhancing-the-mechanical-properties-of-recycled-al-si-fe-cast-alloys
#5
C B Basak, N Hari Babu
High iron impurity affects the castability and the tensile properties of the recycled Al-Si alloys due to the presence of the Fe containing intermetallic β-Al9Fe2Si2 phase. To date only Mn addition is known to transform the β-Al9Fe2Si2 phase in the Al-Si-Fe system. However, for the first time, as reported here, it is shown that β-phase transforms to the ω-Al7Cu2Fe phase in the presence of Cu, after solutionization at 793 K. The ω-phase decomposes below 673 K resulting into the formation of θ-Al2Cu phase...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28720726/mitochondrial-cochaperone-mge1-is-involved-in-regulating-susceptibility-to-fluconazole-in-saccharomyces-cerevisiae-and-candida-species
#6
Liesbeth Demuyser, Erwin Swinnen, Alessandro Fiori, Beatriz Herrera-Malaver, Kevin Vestrepen, Patrick Van Dijck
MGE1 encodes a yeast chaperone involved in Fe-S cluster metabolism and protein import into the mitochondria. In this study, we identified MGE1 as a multicopy suppressor of susceptibility to the antifungal fluconazole in the model yeast Saccharomyces cerevisiae We demonstrate that this phenomenon is not exclusively dependent on the integrity of the mitochondrial DNA or on the presence of the drug efflux pump Pdr5. Instead, we show that the increased dosage of Mge1 plays a protective role by retaining increased amounts of ergosterol upon fluconazole treatment...
July 18, 2017: MBio
https://www.readbyqxmd.com/read/28718587/-drugs-induced-osteopathies
#7
Bérengère Aubry-Rozier
Drug induced bone diseases concerns : induced osteoporosis, induced osteomalacia (by loss of calcium, phosphate or vitamin D) and induced sarcopenia. Some of these drugs are well known, such as anti-hormones, corticotherapy (which could induce all of osteoporosis, osteomalacia and sarcopenia). In the present article, we will focus on 3 others less known but frequently used drugs : iron replacement, proton pump inhibitors therapy, and serotonin reuptake inhibitor antidepressants treatment. For each of them we will discuss the pathophysiological mechanism leading to bone fragility as well as the recommendations of prevention / management to be proposed in case of absolute necessity of the treatment...
March 8, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28718256/iron-deficiency-anaemia-as-risk-factor-for-simple-febrile-seizures-a-case-control-study
#8
Khawaja Tahir Aziz, Naheem Ahmed, Abdul Ghaffar Nagi
BACKGROUND: Febrile fits is common problem in children. Among other risk factors, iron deficiency anaemia is considered as aggravating factor for febrile fits. Iron deficiency anaemia is preventable and treatable disease. The objective of the study was to find out iron deficiency anaemia as risk factor for febrile fits. METHODS: It was a case control study. Thirty cases of febrile fits were recorded. Control group of 30 cases was taken at the same time with same variables but without febrile fits...
April 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28717990/iron-based-phosphate-binders-a-paradigm-shift-in-the-treatment-of-hyperphosphatemic-anemic-ckd-patients
#9
REVIEW
Francesco Locatelli, Lucia Del Vecchio
The partial correction of anemia and the normalization of phosphate and blood pressure are the mainstay of treatment of patients with chronic kidney disease (CKD). Available anti-hypertensive drugs, erythropoiesis stimulating agents (ESAs) and iron supplements have resolved quite satisfactorily the goal of controlling hypertension and partially correcting anemia. Unfortunately, the treatment of hyperphosphatemia is still far from resolved. Phosphate binders have poor tolerability and/or limited efficacy, leading to the prescription of many tablets that achieve only a mild-to-moderate effect...
July 17, 2017: Journal of Nephrology
https://www.readbyqxmd.com/read/28716637/update-on-the-management-of-abnormal-uterine-bleeding
#10
Yael Levy-Zauberman, Anne-Gaëlle Pourcelot, Perrine Capmas, Hervé Fernandez
Abnormal uterine bleeding (AUB) is a common complaint that affects large numbers of women from puberty to menopause. It negatively affects health by causing anemia, and impacts the quality of life of women affected. AUB also has an economic impact for both women and society. Therefore, it should not be under- or overestimate and diagnosis, investigations and treatment should be proposed, taking into account the scientific data available in the current state of medical knowledge. Using the new terminology and etiologic classification of AUB is essential to communicate properly around the subject...
July 14, 2017: Journal of gynecology obstetrics and human reproduction
https://www.readbyqxmd.com/read/28715755/adsorption-of-mercury-ii-from-aqueous-solutions-using-fes-and-pyrite-a-comparative-study
#11
Yue Sun, Dan Lv, Jiasheng Zhou, Xiaoxin Zhou, Zimo Lou, Shams Ali Baig, Xinhua Xu
In this study, a comparative evaluation of synthetic FeS and natural pyrite was performed to investigate their adsorptive potentials toward Hg(II) in aqueous system. Characterization analyses such as BET, SEM and TEM suggested that FeS had porous structures with abundant active sites, while pyrite with a hard and smooth surface relied mainly on surface adsorption to immobilize Hg(II). Results of batch tests revealed that FeS offered much greater Hg(II) maximum adsorption capacity (769.2 mg/g) as compared to pyrite (9...
July 11, 2017: Chemosphere
https://www.readbyqxmd.com/read/28715734/simultaneous-algae-polluted-water-treatment-and-electricity-generation-using-a-biocathode-coupled-electrocoagulation-cell-bio-ecc
#12
Yue Dong, Youpeng Qu, Chao Li, Xiaoyu Han, John J Ambuchi, Junfeng Liu, Yanling Yu, Yujie Feng
How to utilize electrocoagulation (EC) technology for algae-polluted water treatment in an energy-efficient manner remains a critical challenge for its widespread application. Herein, a novel biocathode-coupled electrocoagulation cell (bio-ECC) with sacrificial iron anode and nitrifying biocathode was developed. Under different solution conductivities (2.33±0.25mScm(-1) and 4.94±0.55mScm(-1)), the bio-ECC achieved almost complete removal of algae cells. The maximum power densities of 8.41 and 11.33Wm(-3) at corresponding current densities of 48...
June 23, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28715006/substitution-reactions-of-iron-ii-carbamoyl-thioether-complexes-related-to-mono-iron-hydrogenase
#13
Zhu-Lin Xie, Gummadi Durgaprasad, Azim K Ali, Michael J Rose
A C,N,S pincer complex has been synthesized for structural modeling of the organometallic active site of mono-[Fe] hydrogenase (HMD). The C,N,S chelate allows for systematic investigation of the substitution reactions of CO and other exogenous X/L-type ligands, as well as examination of the exact roles of the Fe-carbamoyl and {Fe(CO)2}(2+) units in stabilizing the low-spin Fe(ii) center. Reaction of the 'apo-ligand' 6-(2-(methylthio)phenyl)pyridin-2-amine ((H2N)N(py)S(Me)) with [Fe(CO)4(Br)2] affords the organometallic complex [((O[double bond, length as m-dash])C(NH)N(py)S(Me))Fe(CO)2(Br)] (1)...
July 17, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28710738/highly-efficient-and-energy-conserved-flocculation-of-copper-in-wastewater-by-pulse-alternating-current
#14
Tao Xu, Xiping Lei, Bo Sun, Gang Yu, Yifu Zeng
Copper wastewater from industry is detrimental to plants and environment. There are some problems in the aspects of high efficiency and energy saving during treatment of wastewater. In present work, the novel double iron electrodes technique of pulse-alternating current was applied to flocculate copper in wastewater. The process parameters of the copper removal in wastewater were studied in the developed electrochemical reactors. Scanning electron microscopy, X-ray diffraction, and energy-dispersive spectroscopy were used to characterize the electrocoagulations...
July 15, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28710483/near-infrared-induced-phase-shifted-icg-fe3o4-loaded-plga-nanoparticles-for-photothermal-tumor-ablation
#15
Chengcheng Niu, Yan Xu, Senbo An, Ming Zhang, Yihe Hu, Long Wang, Qinghai Peng
Near-infrared (NIR) laser-induced photothermal therapy (PTT) uses a photothermal agent to convert optical energy into thermal energy and has great potential as an effective local, minimally invasive treatment modality for killing cancer cells. To improve the efficacy of PTT, we developed poly(lactide-co-glycolide) (PLGA) nanoparticles (NPs) encapsulating superparamagnetic iron oxide (Fe3O4), indocyanine green (ICG), and perfluoropentane (PFP) as synergistic agents for NIR laser-induced PTT. We fabricated a novel type of phase-shifting fluorescent magnetic NPs, Fe3O4/ICG@PLGA/PFP NPs, that effectively produce heat in response to NIR laser irradiation for an enhanced thermal ablation effect and a phase-shift thermoelastic expansion effect, and thus, can be used as a photothermal agent...
July 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28710084/neuroprotective-strategies-following-intraparenchymal-hemorrhage
#16
REVIEW
Robin Moshe Babadjouni, Ryan E Radwanski, Brian P Walcott, Arati Patel, Ramon Durazo, Drew M Hodis, Benjamin A Emanuel, William J Mack
Intracerebral hemorrhage and, more specifically, intraparenchymal hemorrhage, are devastating disease processes with poor clinical outcomes. Primary injury to the brain results from initial hematoma expansion while secondary hemorrhagic injury occurs from blood-derived products such as hemoglobin, heme, iron, and coagulation factors that overwhelm the brains natural defenses. Novel neuroprotective treatments have emerged that target primary and secondary mechanisms of injury. Nonetheless, translational application of neuroprotectants from preclinical to clinical studies has yet to show beneficial clinical outcomes...
July 14, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28709373/one-pot-synthesis-of-magnetic-iron-oxide-nanoparticle-multiwalled-carbon-nanotube-composites-for-enhanced-removal-of-cr-vi-from-aqueous-solution
#17
Wenhui Lu, Jinhua Li, Yanqing Sheng, Xinshen Zhang, Jinmao You, Lingxin Chen
Magnetic nanoparticle-multiwalled carbon nanotubes composites (MNP/MWCNTs) were prepared using 1,6-hexanediamine functionalized Fe3O4 nanoparticles (MNP) linked to carboxylic MWCNTs by facile one-pot solvothermal synthesis for highly efficient removal of Cr(VI) from aqueous solution. The easily obtained magnetic nanocomposites were systematically characterized, and several major factors affecting the adsorption-based removal were investigated, including solution pH, adsorbent dosage, temperature and contact time...
July 6, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28709104/biological-attenuation-of-arsenic-and-iron-in-a-continuous-flow-bioreactor-treating-acid-mine-drainage-amd
#18
L Fernandez-Rojo, M Héry, P Le Pape, C Braungardt, A Desoeuvre, E Torres, V Tardy, E Resongles, E Laroche, S Delpoux, C Joulian, F Battaglia-Brunet, J Boisson, G Grapin, G Morin, C Casiot
Passive water treatments based on biological attenuation can be effective for arsenic-rich acid mine drainage (AMD). However, the key factors driving the biological processes involved in this attenuation are not well-known. Here, the efficiency of arsenic (As) removal was investigated in a bench-scale continuous flow channel bioreactor treating As-rich AMD (∼30-40 mg L(-1)). In this bioreactor, As removal proceeds via the formation of biogenic precipitates consisting of iron- and arsenic-rich mineral phases encrusting a microbial biofilm...
June 22, 2017: Water Research
https://www.readbyqxmd.com/read/28708621/treatment-of-a-mixed-wood-preservative-leachate-by-a-hybrid-constructed-wetland-and-a-willow-planted-filter
#19
S Lévesque, E Demers, J Brisson, Y Comeau
The performance and removal mechanisms of a hybrid constructed wetland (HCW) followed by a willow planted filter (WPF) were evaluated for the treatment of a leachate contaminated by wood pole preservatives (pentachlorophenol (PCP) and chromated copper arsenate) to reach the storm sewer discharge limits. The HCW aimed to dechlorinate the PCP and polychlorodibenzo-p-dioxins/polychlorodibenzofuran (PCDD/F) and to remove metals by adsorption and precipitation. The HCW was efficient in removing PCP (>98.6%), oil, arsenic (99...
July 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28708072/iron-fortified-complementary-foods-containing-a-mixture-of-sodium-iron-edta-with-either-ferrous-fumarate-or-ferric-pyrophosphate-reduce-iron-deficiency-anemia-in-12-to-36-month-old-children-in-a-malaria-endemic-setting-a-secondary-analysis-of-a-cluster-randomized
#20
Dominik Glinz, Rita Wegmüller, Mamadou Ouattara, Victorine G Diakité, Grant J Aaron, Lorenz Hofer, Michael B Zimmermann, Lukas G Adiossan, Jürg Utzinger, Eliézer K N'Goran, Richard F Hurrell
Iron deficiency anemia (IDA) is a major public health problem in sub-Saharan Africa. The efficacy of iron fortification against IDA is uncertain in malaria-endemic settings. The objective of this study was to evaluate the efficacy of a complementary food (CF) fortified with sodium iron EDTA (NaFeEDTA) plus either ferrous fumarate (FeFum) or ferric pyrophosphate (FePP) to combat IDA in preschool-age children in a highly malaria endemic region. This is a secondary analysis of a nine-month cluster-randomized controlled trial conducted in south-central Côte d'Ivoire...
July 14, 2017: Nutrients
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