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https://www.readbyqxmd.com/read/29778887/biological-potential-of-oxo-vanadium-salicylediene-amino-acid-complexes-as-cytotoxic-antimicrobial-antioxidant-and-dna-interaction
#1
Mohamed Shaker S Adam, Hany Elsawy
New series of oxo-vanadium N-salicyledieneamino acid Schiff base complexes are synthesized and characterized. They are synthesized from the reaction of sodium salicylaldehyde-5-sulfonate, some amino acids, alanine (VOHL1), leucine (VOHL2) or glycine (VOHL3) in an aqueous media, and leucine (VOHLpy1) or tryptophan (VOHLpy2) in pyridine with vanadyl acetylacetonate. The complexes are characterized by EA, TGA, IR, UV-Visible and mass spectra, conductivity and magnetic measurements. The biological activity of the VO-complexes shows that VOHL1, VOHL2 and VOHL3 exhibit anti-proliferative effect and may be used as anticancer drugs...
May 4, 2018: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29778145/impact-of-density-of-coating-agent-on-antibacterial-activity-of-silver-nanoparticle-impregnated-plasma-treated-activated-carbon
#2
Pritam Biswas, Rajdip Bandyopadhyaya
To use stabilized nanoparticles (NPs) in water as disinfectants over a very long period, the amount of coating agent (for NP stabilization) needs to be optimized. To this end, silver nanoparticles (Ag-NPs) with two different coating densities of tri-sodium citrate (12.05 and 46.17molecules/nm2 , respectively), yet of very similar particle size (29 and 27 nm, respectively) were synthesized. Both sets of citrate capped NPs were then separately impregnated on plasma treated activated carbon (AC), with similar Ag loading of 0...
May 2018: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/29777932/application-of-a-surfactant-assisted-dispersive-liquid-liquid-microextraction-method-along-with-central-composite-design-for-micro-volume-based-spectrophotometric-determination-of-low-level-of-cr-vi-ions-in-aquatic-samples
#3
Hamid Reza Sobhi, Efat Azadikhah, Mohammad Behbahani, Ali Esrafili, Mahnaz Ghambarian
A fast, simple, low cost surfactant-assisted dispersive liquid-liquid microextraction method along with central composite design for the determination of low level of Cr(VI) ions in several aquatic samples has been developed. Initially, Cr(VI) ions present in the aqueous sample were readily reacted with 1,5‑diphenylcarbazide (DPC) in acidic medium through complexation. Sodium dodecyl sulfate (SDS), as an anionic surfactant, was then employed as an ion-pair agent to convert the cationic complex into the neutral one...
May 9, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29776868/hemorrhagic-cystitis-after-hematopoietic-stem-cell-transplantation-a-challenge-for-the-pediatric-urologist
#4
REVIEW
Romy Gander, Marino Asensio, Gabriela Guillén, Gloria Fatou Royo, Andrea Bolaños, Mercedes Pérez, Cristina Diaz-De-Heredia, Maribel Benitez, Manuel López
OBJECTIVE: Hemorrhagic cystitis (HC) is a serious event that can occur after hematopoietic stem cell transplantation (HSCT). Treatment goals are primarily to preserve life, and then the functionality of the bladder. There is no standard therapeutic approach for HC. Described treatment options provide low success rates and are related to potential life-threatening side effects. The aim of this study was to describe our experience in treatment of HC following HSCT. PATIENTS AND METHODS: This was a retrospective study of patients with HC treated at our institution between January 2010 and October 2016...
April 20, 2018: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/29776838/hot-aqueous-leaf-extract-of-lasianthera-africana-icacinaceae-attenuates-rifampicin-isoniazid-induced-hepatotoxicity
#5
Lucky Legbosi Nwidu, Raphael Ellis Teme
OBJECTIVES: The aim of this study is to evaluate the hepatoprotective effect of Lasianthera africana (Icacinaceae) against isoniazid (INH) and rifampicin (RIF)-induced liver damage in rats. METHODS: The hepatoprotective effects of hot aqueous L. africana (HALA) leaf extract (0.1-1 g/kg) and silymarin (50 mg/kg) were assessed in a model of oxidative liver damage induced by RIF and INH (100 mg/kg each) in Wistar rats for 28 days. Biochemical markers of hepatic damage such as alanine aminotransferase (ALT), aspartate aminotransferase (AST) and alkaline phosphatase (ALP) were assessed...
May 8, 2018: Journal of Integrative Medicine
https://www.readbyqxmd.com/read/29776662/effect-of-the-pore-water-composition-on-the-diffusive-anion-transport-in-argillaceous-low-permeability-sedimentary-rocks
#6
Cornelia Wigger, Luc R Van Loon
The effect of the pore water composition on the diffusive anion transport was studied for two different argillaceous, low permeability sedimentary rocks, Opalinus Clay (OPA) and Helvetic Marl (HM). The samples were saturated with different solutions with varying molar concentration and different main cations in the solution: NaCl based pore solutions and CaCl2 based pore solutions. The total porosity was measured by through-diffusion experiments with the neutral tracer HTO. Experiments performed in NaCl solutions resulted in a porosity of 0...
May 8, 2018: Journal of Contaminant Hydrology
https://www.readbyqxmd.com/read/29775819/facile-synthesis-of-yolk-shell-structured-monodisperse-mesoporous-organosilica-nanoparticles-by-a-mild-alkalescent-etching-approach
#7
Jun Tao, Meng Dang, Xiaodan Su, Qing Hao, Junjie Zhang, Xiaobo Ma, Guangming Lu, Yunlei Zhang, Ying Tian, Lixing Weng, Zhaogang Teng, Lianhui Wang
In the work, yolk-shell structured mesoporous organosilica nanoparticles (YSMONs) are successfully prepared by a mild alkalescent etching approach. The method is very convenient, in which mesostructured organosilica nanospheres are directly transformed into yolk-shell structures after etching with mild alkalescent solution (e.g. sodium carbonate solution). The prepared YSMONs have ethane-bridged frameworks, a monodisperse diameter (320 nm), a large pore volume (1.0 cm3  g-1 ), a uniform mesopore (2.4 nm) and a high surface area (1327 m2  g-1 )...
May 15, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29775713/enhancement-of-catalytic-activity-and-thermostability-of-a-thermostable-cellobiohydrolase-from-chaetomium-thermophilum-by-site-directed-mutagenesis
#8
Chao Han, Weiguang Li, Chengyao Hua, Fengqing Sun, Pengsheng Bi, Qunqing Wang
Enzymatic saccharification of lignocellulosic biomass is increasingly applied in agricultural and industrial applications. Nevertheless, low performance in the extreme environment severely prevents the utilization of commercial enzyme preparations. To obtain cellobiohydrolases with improved catalytic activity and thermostability, structure-based rational design was performed based on a thermostable cellobiohydrolase CtCel6 from Chaetomium thermophilum. In the present study, four conserved and noncatalytic residue substitutions were generated via site-directed mutagenesis...
May 15, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29775291/reactive-uptake-of-glyoxal-by-ammonium-containing-salt-particles-as-a-function-of-relative-humidity
#9
Masao Gen, Dandan Huang, Chak Keung Chan
Reactions between dissolved ammonia and carbonyls, which form light-absorbing species in atmospheric particles, can be accelerated by actively removing water from the reaction system. Here, we examine the effects of relative humidity (RH) on the reactive uptake of glyoxal (Gly) by aqueous particles of ammonium sulfate (AS), ammonium bisulfate, sodium sulfate, magnesium sulfate, ammonium nitrate (AN), and sodium nitrate. In-situ Raman analysis was used to quantify particle-phase Gly and a colored product, 2,2'-biimidazole (BI) as a function of uptake time...
May 18, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29775274/oxide-based-composite-electrolytes-using-na3zr2si2po12-na3ps4-interfacial-ion-transfer
#10
Kousuke Noi, Yuka Nagata, Takashi Hakari, Kenji Suzuki, So Yubuchi, Yusuke Ito, Atsushi Sakuda, Akitoshi Hayashi, Masahiro Tatsumisago
All-solid-state sodium batteries using Na3Zr2Si2PO12 (NASICON) solid electrolytes are promising candidates for safe and low-cost advanced rechargeable battery systems. Although NASICON electrolytes have intrinsically high sodium ion conductivities, their high sintering temperatures interfere with the immediate development of high-performance batteries. In this work, sintering-free NASICON-based composites with Na3PS4 (NPS) glass-ceramics were prepared to combine the high grain-bulk conductivity of NASICON and the interfacial formation ability of NPS...
May 18, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29774173/role-of-interventional-radiology-in-the-management-of-peripheral-vascular-malformations-a-tertiary-care-center-experience
#11
Misbah Tahir, Muhammad Anees Mumtaz, Anum Sultan, Jawaid Iqbal, Raza Sayani
Peripheral vascular malformations (PVMs) represent a wide spectrum of vascular abnormalities occurring due to anomalous connections between arteries, veins, capillaries, and lymphatic channels at the microscopic level, in different combinations. They are rare and challenging to treat. Different operators may have different approaches based on their experience and expertise. Sclerotherapy either alone or in combination with embolization has been used as an independent method for the treatment of PVMs. Purpose The aim of this study is to assess the safety and efficacy of sclerotherapy and embolization, with or without surgery, for the treatment of peripheral vascular malformations, based on our approach...
March 16, 2018: Curēus
https://www.readbyqxmd.com/read/29774167/complete-hypokalemic-quadriparesis-as-a-first-presentation-of-sj%C3%A3-gren-syndrome
#12
Jason An, Branko Braam
Rationale: We hope to increase awareness that hypokalemic paralysis may be the first presentation of Sjögren syndrome, for which potassium-sparing diuretics can be an effective adjunct to potassium replenishment. Presenting concerns: A 73-year-old female presented to a peripheral hospital with quadriparesis and a critically low serum potassium of 1.6 mmol/L with U waves on the electrocardiogram (ECG). The initial arterial blood gas showed a pH of 7.19, bicarbonate of 13 mEq/L, and a CO2 of 35 mm Hg...
2018: Canadian Journal of Kidney Health and Disease
https://www.readbyqxmd.com/read/29773362/regioselective-chlorination-of-cellulose-esters-by-methanesulfonyl-chloride
#13
Chengzhe Gao, Shu Liu, Kevin J Edgar
Regioselective chlorination of cellulose is challenging due to its low reactivity, the small reactivity differences between cellulosic hydroxyl groups, and the high and diverse reactivity of most common chlorinating agents. Halogenation of cellulose affords useful precursors for subsequent nucleophilic substitution reactions, permitting incorporation of new functionality. Herein we report a simple and efficient pathway for preparation of 6-chloro-6-deoxycellulose esters and their derivatives. Cellulose acetate (degree of substitution (DS) 1...
August 1, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29772577/incidental-detection-of-dent-2-disease-in-an-infant-with-febrile-proteinuria
#14
Shpetim Salihu, Katerina Tosheska, Svetlana Cekovska, Velibor Tasic
OBJECTIVE: Febrile proteinuria is functional proteinuria and is seen as a transitory phenomenon during acute febrile illness, mainly viral infections. It is a benign phenomenon and clears promptly with resolution of the infection. CLINICAL PRESENTATION AND INTERVENTION: In this report, we present a patient who was thought to have febrile proteinuria. Persistence of significant proteinuria after resolution of the infection prompted biochemical and genetic work-up which lead to the diagnosis of Dent-2 disease...
May 17, 2018: Medical Principles and Practice: International Journal of the Kuwait University, Health Science Centre
https://www.readbyqxmd.com/read/29772415/highly-efficient-polymer-supported-monodisperse-ruthenium-nickel-nanocomposites-for-dehydrocoupling-of-dimethylamine-borane
#15
Betul Sen, Esra Kuyuldar, Buse Demirkan, Tugba Onal Okyay, Aysun Şavk, Fatih Sen
In the present study, highly effective and reusable monodisperse ruthenium-nickel (Ru-Ni) nanomaterials supported on poly(N-vinyl-2-pyrrolidone) (Ru-Ni@PVP) were synthesized (3.51 ± 0.38 nm) by a facile sodium-hydroxide-assisted reduction method; Ru and Ni reduction in PVP solution was accomplished. The prepared nanocomposites were characterized by TEM, HRTEM, XRD, and XPS and performed as a catalyst for dehydrocoupling of dimethylamine-borane (DMAB). It was found that Ru-Ni nanomaterials are one of the most active catalysts at low concentrations and temperature for dehydrocoupling of DMAB...
May 14, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29771736/the-role-of-diet-for-prevention-and-management-of-hypertension
#16
Cemal Ozemek, Deepika R Laddu, Ross Arena, Carl J Lavie
PURPOSE OF REVIEW: Regular consumption of a diet high in sodium, energy dense foods, fat content, refined carbohydrates, added sugar and low in fruits and vegetables contributes to an increased risk of developing hypertension (HTN) and cardiovascular disease. This review aims to provide a synopsis of evidence-based dietary approaches that have been effective in lowering blood pressure (BP) in pre-HTN and individuals with HTN. RECENT FINDINGS: Recent dietary recommendations have emphasized overall dietary patterns and its relation between food and BP...
May 15, 2018: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/29770890/the-effects-of-gypsum-and-mulch-applications-on-reclamation-parameters-and-physical-properties-of-an-alkali-soil
#17
Cagla Temiz, Gokhan Cayci
Alkali soils have undesirable properties for crop production. However, these problematic areas can be reclaimed and regained for cultivation. Mulch materials have been used in the past to decrease salinity damage in saline soils. But information about using mulch materials for alkali soil reclamation is rare. The aim of this study was to determine the combined effects of different levels of gypsum applied with straw or pumice mulch materials on the reclamation of an alkali soil. Results obtained from soil extracts during the leaching water cycles showed that gypsum and mulch materials caused significant differences in sodium adsorption ratio (SAR) and electrical conductivity (EC) values...
May 17, 2018: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29770866/meucin-49-a-multifunctional-scorpion-venom-peptide-with-bactericidal-synergy-with-neurotoxins
#18
Bin Gao, Julie Dalziel, Simone Tanzi, Shunyi Zhu
Besides key roles in prey capture and predator defense, scorpion venom also functions as internal immune agents protecting the venom gland from infection and external immune agents cleaning saprophytic microbes from their own body surfaces. However, antimicrobials (typically antimicrobial peptides, AMPs) in the venom often exist in low abundance that might exclude their immune role alone, leaving an open question with regard to their in vivo biological function. Here, we report the bactericidal activity of seven peptides isolated from the scorpion Mesobuthus eupeus venom, including one classical α-helical AMP and five ion channel-targeted neurotoxins...
May 16, 2018: Amino Acids
https://www.readbyqxmd.com/read/29768912/association-between-urinary-sodium-levels-and-iodine-status-in-korea
#19
Jonghwa Ahn, Jang Ho Lee, Jiwoo Lee, Ji Yeon Baek, Eyun Song, Hye-Seon Oh, Mijin Kim, Suyeon Park, Min Ji Jeon, Tae Yong Kim, Won Bae Kim, Young Kee Shong, Won Gu Kim
Background/Aims: To evaluate the association between the urinary sodium concentration and iodine status in different age groups in Korea. Methods: This nationwide, population-based, cross-sectional study used data from the Korean National Health and Nutrition Examination Survey (VI 2-3, 2014 to 2015). We included 3,645 subjects aged 10 to 75 years with normal kidney function and without a history of thyroid disease. Adequate iodine intake was defined as a urinary iodine/creatinine (I/Cr) ratio of 85 to 220 µg/g...
May 18, 2018: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/29768710/improving-the-safety-of-high-dose-methotrexate-for-children-with-hematologic-cancers-in-settings-without-access-to-mtx-levels-using-extended-hydration-and-additional-leucovorin
#20
Kalthi Vaishnavi, Deepak Bansal, Amita Trehan, Richa Jain, Savita Verma Attri
BACKGROUND: A lack of access to methotrexate levels is common in low- and middle-income countries (LMIC), relevant for 80% of children with cancer worldwide. We evaluated whether high-dose methotrexate (HD-MTX) can be administered safely with extended hydration and leucovorin rescue, with monitoring of serum creatinine and urine pH. METHODS: The prospective study was conducted at a single centre in Chandigarh, India in 2015. Patients with B-cell acute lymphoblastic leukemia (ALL) or with T-cell ALL or non-Hodgkin lymphoma (T-NHL) were administered 3 and 5 gm/m2 of MTX (24 hr infusion), respectively...
May 16, 2018: Pediatric Blood & Cancer
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