keyword
MENU ▼
Read by QxMD icon Read
search

Methylene blue

keyword
https://www.readbyqxmd.com/read/28345492/rasburicase-induced-methemoglobinemia-the-eyes-do-not-see-what-the-mind-does-not-know
#1
Uroosa Ibrahim, Amina Saqib, Farhan Mohammad, Jean Paul Atallah, Marcel Odaimi
Rasburicase is indicated for the prevention and treatment of tumor lysis syndrome which can be a potentially life-threatening emergency. The drug has oxidizing potential and as an adverse effect, it can convert the ferrous form of iron in erythrocytes to its ferric form resulting in the formation of methemoglobin which makes the heme component incapable of carrying oxygen. Patients with glucose-6-phosphate dehydrogenase enzyme deficiency are at high risk of methemoglobinemia from oxidizing agents. Symptoms of methemoglobinemia range from none to life-threatening hypoxemia, cyanosis and respiratory compromise...
January 1, 2017: Journal of Oncology Pharmacy Practice
https://www.readbyqxmd.com/read/28345172/international-prospective-haemovigilance-study-on-methylene-blue-treated-plasma
#2
L Noens, Ma D Vilariño, A Megalou, H Qureshi
BACKGROUND AND OBJECTIVES: Methylene blue is a phenothiazine dye, which in combination with visible light has virucidal and bactericidal properties, disrupting the replication of a broad range of enveloped viruses and some non-enveloped viruses. The study objective was to collect data on adverse reactions occurring with methylene blue plasma administered in a routine clinical practice environment and document their characteristics and severity. MATERIALS AND METHODS: This was an open label, multicentre, non-controlled, non-randomized, non-interventional study...
March 26, 2017: Vox Sanguinis
https://www.readbyqxmd.com/read/28344047/sub-additive-effects-of-photodynamic-therapy-combined-with-erlotinib-for-the-treatment-of-epidermoid-carcinoma-an-in-vitro-study
#3
Sávio M L Gontijo, Renata C Felizali, Pedro P G Guimarães, Robson A S Santos, Rubén D Sinisterra, Maria E Cortés, Patrícia V Araújo
BACKGROUND: Photodynamic therapy (PDT) is an antitumour treatment that employs the combination of a photosensitive compound, oxygen and visible light. To improve the antitumour activity of PDT, the present study used the strategy of combining PDT with erlotinib (ERL), a drug frequently used in the treatment of epidermoid carcinoma. METHODS: An MTT cell viability assay was used to evaluate the cytotoxicity of PDT combined with ERL on A431 epidermoid carcinoma cells in vitro...
March 23, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28343131/synthesis-of-mesoporous-poly-melamine-formaldehyde-particles-by-inverse-emulsion-polymerization
#4
Dana Schwarz, Jens Weber
Mesoporous poly(melamine-formaldehyde) (MF) particles with surface areas of up to 200m(2)g(-1) were synthesized by an inverse emulsion polymerization using dodecane and Span80® as continuous phase. The finer details of the shape control (using emulsion techniques) and the porosity control (using silica nanoparticles as hard-template) are discussed. The impact of phase-separation processes on the observable porosity of the 20-200µm sized spherical particles is analysed by gas sorption methods and electron microscopy...
March 16, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28342308/shape-selective-catalysis-and-surface-enhanced-raman-scattering-studies-using-ag-nanocubes-nanospheres-and-aggregated-anisotropic-nanostructures
#5
Subrata Kundu, Wei Dai, Yunyun Chen, Lian Ma, Yuan Yue, Alexander M Sinyukov, Hong Liang
Three morphologies of silver nanoparticles (Ag NPs) such as nanocubes, aggregated anisotropic Ag NPs, and nanospheres were prepared using polystyrene sulfonate (PSS) and citrate as stabilizing agents utilizing a simple wet-chemical and microwave heating route respectively. Ag nanocubes were prepared within one min through microwave heating whereas anisotropic Ag NPs and spherical Ag NPs via 5 and 30min of normal stirring at room temperature (RT) respectively. The shape effect of three different morphologies of Ag NPs were examined in catalysis reaction and in surface enhanced Raman scattering (SERS) studies...
March 16, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28340992/hierarchical-structured-mno2-sio2-nanofibrous-membranes-with-superb-flexibility-and-enhanced-catalytic-performance
#6
Xueqin Wang, Lvye Dou, Liu Yang, Jianyong Yu, Bin Ding
Constructing nanostructured catalyst-embedded ceramic fibrous membranes would facilitate the remediation or preliminary treatment of dyeing wastewater, however, most of such membranes are brittle with low deformation resistance, thus, restricting their widely applications. Herein, the flexible and hierarchical nanostructured MnO2-immobilized SiO2 nanofibrous membranes (MnO2@SiO2 NFM) were fabricated by combining the electrospinning technique with hydrothermal method. The morphologies of membranes could be regulated from nanowires and nanoflower to mace-like structure via varying concentration of reactants...
February 15, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28339573/augmented-h2s-production-via-cystathionine-beta-synthase-upregulation-plays-a-role-in-pregnancy-associated-uterine-vasodilation%C3%A2
#7
Lili Sheibani, Thomas J Lechuga, Honghai Zhang, Afshan Hameed, Deborah A Wing, Sathish Kumar, Charles R Rosenfeld, Dong-Bao Chen
Endogenous hydrogen sulfide (H2S) synthesized via metabolizing L-cysteine by cystathionine-beta-synthase (CBS) and cystathionine-gamma-lyase (CSE) is a potent vasodilator and angiogenic factor. The objectives of this study were to determine if human uterine artery (UA) H2S production increases with augmented expression and/or activity of CBS and/or CSE during the menstrual cycle and pregnancy and whether exogenous H2S dilates UA. Uterine arteries from nonpregnant (NP) premenopausal proliferative (pPRM) and secretory (sPRM) phases of the menstrual cycle and pregnant (P) women were studied...
January 24, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28336065/folding-and-dynamics-based-electrochemical-dna-sensors
#8
Rebecca Y Lai
A number of electrochemical DNA sensors based on the target-induced change in the conformation and/or flexibility of surface-bound oligonucleotides have been developed in recent years. These sensors, which are often termed E-DNA sensors, are comprised of an oligonucleotide probe modified with a redox label (e.g., methylene blue) at one terminus and attached to a gold electrode via a thiol-gold bond at the other. Binding of the target to the DNA probe changes its structure and dynamics, which, in turn, influences the efficiency of electron transfer to the interrogating electrode...
2017: Methods in Enzymology
https://www.readbyqxmd.com/read/28335255/a-gallium-oxide-graphene-oxide-hybrid-composite-for-enhanced-photocatalytic-reaction
#9
Seungdu Kim, Kook In Han, In Gyu Lee, Won Kyu Park, Yeojoon Yoon, Chan Sei Yoo, Woo Seok Yang, Wan Sik Hwang
Hybrid composites (HCs) made up of gallium oxide (GaO) and graphene oxide (GO) were investigated with the intent of enhancing a photocatalytic reaction under ultraviolet (UV) radiation. The material properties of both GaO and GO were preserved, even after the formation of the HCs. The incorporation of the GO into the GaO significantly enhanced the photocatalytic reaction, as indicated by the amount of methylene blue (MB) degradation. The improvements in the reaction were discussed in terms of increased surface area and the retarded recombination of generated charged carriers...
July 1, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335234/fe-3-doped-tio%C3%A2-nanotube-arrays-on-ti-fe-alloys-for-enhanced-photoelectrocatalytic-activity
#10
Jiangdong Yu, Zhi Wu, Cheng Gong, Wang Xiao, Lan Sun, Changjian Lin
Highly ordered, vertically oriented Fe(3+)-doped TiO₂ nanotube arrays (Fe-TNTs) were prepared on Ti-Fe alloy substrates with different Fe contents by the electrochemical anodization method. The as-prepared Fe-TNTs were characterized by scanning electron microscope (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and related electrochemical techniques. XPS results demonstrated that Fe(3+) ions were successfully doped into TiO₂ nanotubes. The photoelectrochemical activity of Fe-TNTs was compared with that of pure TiO₂ nanotube arrays (TNTs)...
June 6, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28332343/bifunctional-cage-type-cubic-mesoporous-silica-sba-1-nanoparticles-for-selective-adsorption-of-dyes
#11
Chien-Hua Lin, Juti Rani Deka, Cheng-En Wu, Cheng-Hsun Tsai, Diganta Saikia, Yung-Chin Yang, Hsien-Ming Kao
Bifunctional SBA-1 mesoporous silica nanoparticles (MSNs) with carboxylic acid and amino groups (denoted as CNS-10-10) are successfully synthesized, characterized and employed as adsorbents for dye removal. The adsorbent CNS-10-10 shows high affinity towards cationic and anionic dyes in a wide pH range, and exhibits selective dye removal of a two dye mixture system of cationic methylene blue and anionic eosin Y. By changing the medium pH, the selectivity of adsorption behavior can be easily modulated. For comparison purposes, the counterparts, i...
March 23, 2017: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/28330300/carbon-quantum-dots-shuttle-electrons-to-the-anode-of-a-microbial-fuel-cell
#12
A S Vishwanathan, Kartik S Aiyer, L A A Chunduri, K Venkataramaniah, S Siva Sankara Sai, Govind Rao
Electrodes based on graphite, graphene, and carbon nanomaterials have been used in the anode chamber of microbial fuel cells (MFCs). Carbon quantum dots (C-dots) are a class of versatile nanomaterials hitherto not reported in MFCs. C-dots previously synthesized from coconut husk were reported to possess hydroxyl and carboxyl functional groups on their surface. The presence of these functional groups on a carbon matrix conferred on the C-dots the ability to conduct and transfer electrons. Formation of silver nanoparticles from silver nitrate upon addition of C-dots confirmed their reducing ability...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330248/photo-inactivation-of-escherichia-coli-and-enterococcus-hirae-using-methylene-blue-and-sodium-anthraquinone-2-sulphonate-effect-of-process-parameters
#13
Madhavi Singh, Kannan Pakshirajan, Vishal Trivedi
In this study, effect of different parameters, viz. concentration of photosensitizer (PS), pH of the bacterial cell suspension and initial cell count, on photo-inactivation of Escherichia coli and Enterococcus hirae bacteria using methylene blue (MB) and sodium anthraquinone-2-sulphonate (SAQS) was investigated employing the statistically valid full factorial design of experiments. The inactivation efficiency of E. hirae using MB ranges between 10.81 and 48.55 %, whereas in the case of E. coli it ranges between 10...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28329007/highly-efficient-photocatalytic-degradation-of-methylene-blue-by-popd-tio2-nanocomposite
#14
Chuanxi Yang, Ming Zhang, Wenping Dong, Guanwei Cui, Zongming Ren, Weiliang Wang
The poly-o-phenylenediamine (PoPD)/TiO2 nanocomposite was successfully synthesized via 'in situ' oxidative polymerization method. The modified photocatalysts were characterized by BET, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier-transform infrarad spectra (FT-IR), thermogravimrtic analysis (TGA), X-ray photoelectron spectroscopy (XPS), Ultraviolet-visible diffuse reflectance spectrum (UV-Vis DRS) and Photocurrent Test. The results showed that the PoPD exists on the surface of TiO2, the presence of PoPD does not impact on the lattice structure and grain size of TiO2, and the presence of PoPD enhances the visible response and photoelectric property...
2017: PloS One
https://www.readbyqxmd.com/read/28325907/photosensitization-of-tio2-nanofibers-by-ag2s-with-the-synergistic-effect-of-excess-surface-ti-3-states-for-enhanced-photocatalytic-activity-under-simulated-sunlight
#15
Samina Ghafoor, Sadia Ata, Nasir Mahmood, Salman Noshear Arshad
TiO2 nanofibers, with mean diameter ~200 nm, were fabricated by electrospinning and successfully photosensitized with low bandgap Ag2S nanoparticles of 11, 17, 23 and 40 nm mean sizes, with corresponding loading of 4, 10, 18 and 29 wt.% Ag2S, respectively. 17 nm Ag2S@TiO2 nanofibers exhibited optimal activity in the photodegradation of methylene blue under simulated sunlight with pseudo-first order rate constant of 0.019 min(-1) compared to 0.009 min(-1) for pure TiO2 nanofibers. In spite of greater visible-light absorption and reduced bandgap, larger than 17 nm Ag2S nanoparticles exhibited sluggish photodegradation kinetics probably due to less photo-induced carriers generation in TiO2 and reduced electron injection rates from the larger sized Ag2S into TiO2...
March 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28325329/extraction-of-nanocellulose-and-in-situ-casting-of-zno-cellulose-nanocomposite-with-enhanced-photocatalytic-and-antibacterial-activity
#16
Kebadiretse Lefatshe, Cosmas M Muiva, Lemme P Kebaabetswe
Polymer hosted metallic nanostructures with diverse applications have become a prominent area of materials science, engineering and technology. In this study nanocellulose (NC) was synthesized from oil palm empty fruit bunches biomass via alkaline treatment and acid hydrolysis and characterized. The obtained NC was used as a host polymer for the synthesis of zinc oxide (ZnO) nanostructures through in-situ solution casting method. Alkaline treatment and acid hydrolysis increased the percentage crystalline index from 35...
May 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28317369/visual-chronometric-assay-for-chromium-iii-ions-based-on-the-cu2o-nanocube-mediated-clock-reaction
#17
Lei Zheng, Haili Yu, Yaling Yue, Fengjuan Wu, Yi He
We report a visual chronometric assay for Cr(3+) based on the Cu2O nanocube-mediated clock reaction of methylene blue (MB) and N2H4. MB with a blue color can be easily reduced by excess N2H4 to form colorless leuco-MB in the presence of Cu2O nanocubes as a catalyst in a short time. However, the addition of Cr(3+) decreases the catalytic activity of Cu2O nanocubes owing to the coordination interactions between them, leading to an increase in the reaction time. The reaction time change was employed for selective detection of Cr(3+)...
March 24, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28315137/sheep-fed-with-banana-leaf-hay-reduce-ruminal-protozoa-population
#18
Cláudio Eduardo Silva Freitas, Eduardo Robson Duarte, Dorismar David Alves, Isabel Martinele, Marta D'Agosto, Franciane Cedrola, Angélica Alves de Moura Freitas, Franklin Delano Dos Santos Soares, Makenzi Beltran
A ciliate protozoa suppression can reduce methane production increasing the energy efficiency utilization by ruminants. The physicochemical characteristics of rumen fluid and the profile of the rumen protozoa populations were evaluated for sheep fed banana leaf hay in replacement of the Cynodon dactylon cv. vaqueiro hay. A total of 30 male sheep were raised in intensive system during 15 days of adaptation and 63 days of experimental period. The animals were distributed in a completely randomized design that included six replicates of five treatments with replacement levels (0, 25, 50, 75, and 100%) of the grass vaquero for the banana leaf hay...
March 17, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28314525/intraoperative-electromagnetic-navigational-bronchoscopic-localization-of-small-deep-or-subsolid-pulmonary-nodules
#19
Abbas Abbas, Sagar Kadakia, Vishnu Ambur, Kimberly Muro, Larry Kaiser
BACKGROUND: Localizing small or deep pulmonary nodules or subsolid ground-glass opacities often is difficult during video-assisted thoracoscopic surgery (VATS) or robotic-assisted thoracoscopic surgery (RATS). This can result in larger resections or conversion to thoracotomy. The goal of this study is to evaluate the role of electromagnetic navigational bronchoscopic localization (ENBL) as a safe and accurate intraoperative method to localize small, deep, or subsolid nodules. METHODS: This is a single-institution, single-surgeon retrospective study of all patients (51) who underwent combined ENBL and resection of 54 nodules between May 2013 and August 2015...
February 7, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28314221/activated-electric-arc-furnace-slag-as-an-effective-and-reusable-fenton-like-catalyst-for-the-photodegradation-of-methylene-blue-and-acid-blue-29
#20
N Nasuha, S Ismail, B H Hameed
In this work, an activated electric arc furnace slag (A-EAFS) was investigated as an effective Fenton catalyst for the photodegradation of methylene blue (MB) and acid blue 29 (AB29). Fourier transform infrared spectroscopy and UV-visible absorption analyses indicated that A-EAFS offers additional Fe3O4 because of the changes in the iron oxide phase and the favorable response to visible light. It has been found that the highest degradation efficiency can reach up to 94% for MB under optimal conditions of 1 g L(-1) of A-EAFS, 20 mM H2O2, and pH 3...
March 14, 2017: Journal of Environmental Management
keyword
keyword
63816
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"