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https://www.readbyqxmd.com/read/28088119/composite-films-of-metal-doped-cos-carbon-allotropes-efficient-electrocatalyst-counter-electrodes-for-high-performance-quantum-dot-sensitized-solar-cells
#1
Seyede Sara Khalili, Hossein Dehghani, Malihe Afrooz
This study reports the enhanced catalytic ability of metal ions-doped CoS and CoS/carbon allotrope counter electrodes (CEs) (synthesized using a successive ionic layer adsorption and reaction (SILAR) method) to improve the power conversion efficiency (η) in quantum dot-sensitized solar cells (QDSSCs). Firstly, doping effects of different metal ions (Mg(2+), Ca(2+), Sr(2+) and Ba(2+)) in the CoS CE on the QDSSCs performance have been investigated. Overall, among the different metal doped CoS CEs, the best energy conversion efficiency of 2...
January 5, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28088107/gaas-laser-therapy-reestablishes-the-morphology-of-the-nmj-and-nachrs-after-injury-due-to-bupivacaine
#2
Cristiane Neves Alessi Pissulin, Paula Aiello Tomé de Souza Castro, Flávio Codina, Carina Guidi Pinto, Ivan Jose Vechetti-Junior, Selma Maria Michelin Matheus
BACKGROUND: Local anesthetics are used to relieve pre- and postoperative pain, acting on both sodium channels and nicotinic acetylcholine receptors (nAChR) at the neuromuscular junction (NMJ). Bupivacaine acts as a non-competitive antagonist and has limitations, such as myotoxicity, neurotoxicity, and inflammation. Low-level laser therapy (LLLT) has anti-inflammatory, regenerative, and analgesic effects. The aim of the present study was to evaluate the effects of a gallium arsenide laser (GaAs) on the morphology of the NMJ and nAChRs after application of bupivacaine in the sternomastoid muscle...
December 22, 2016: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28088103/chemically-enzymatic-synthesis-of-photosensitive-dna
#3
Kinga Westphal, Magdalena Zdrowowicz, Agnieszka Zylicz-Stachula, Janusz Rak
The sensitizing propensity of radio-/photosensitizing nucleoside depends on DNA sequence surrounding a sensitizer. Therefore, in order to compare sensitizers with regard to their ability to induce a DNA damage one has to study the sequence dependence of damage yield. However, chemical synthesis of oligonucleotides labeled with sensitizing nucleosides is hindered due to the fact that a limited number of such nucleoside phosphoramidites are accessible. Here, we report on a chemically-enzymatic method, employing a DNA polymerase and ligase, that enables a modified nucleoside, in the form of its 5'-triphosphate, to be incorporated into DNA fragment in a pre-determined site...
January 5, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28088076/in%C3%A2-vivo-visualization-of-endogenous-mir-21-using-hyaluronic-acid-coated-graphene-oxide-for-targeted-cancer-therapy
#4
Do Won Hwang, Han Young Kim, Fangyuan Li, Ji Yong Park, Dohyun Kim, Jae Hyung Park, Hwa Seung Han, Jung Woo Byun, Yun-Sang Lee, Jae Min Jeong, Kookheon Char, Dong Soo Lee
Oncogene-targeted nucleic acid therapy has been spotlighted as a new paradigm for cancer therapeutics. However, in vivo delivery issues and uncertainty of therapeutic antisense drug reactions remain critical hurdles for a successful targeted cancer therapy. In this study, we developed a fluorescence-switchable theranostic nanoplatform using hyaluronic acid (HA)-conjugated graphene oxide (GO), which is capable of both sensing oncogenic miR-21 and inhibiting its tumorigenicity simultaneously. Cy3-labeled antisense miR-21 peptide nucleic acid (PNA) probes loaded onto HA-GO (HGP21) specifically targeted CD44-positive MBA-MB231 cells and showed fluorescence recovery by interacting with endogenous miR-21 in the cytoplasm of the MBA-MB231 cells...
December 31, 2016: Biomaterials
https://www.readbyqxmd.com/read/28088022/valorization-of-aluminum-scrap-via-an-acid-washing-treatment-for-reductive-removal-of-toxic-bromate-from-water
#5
Kun-Yi Andrew Lin, Jia-Yin Lin, Hsing-Lung Lien
Aluminum scrap (AS) is adopted for the first time as a readily available aluminum source to prepare zero-valent aluminum (ZVAl) for removing bromate from water via a reductive reaction. Since aluminum is easily oxidized to aluminum oxide (Al2O3) on exposure to air, an acid-washing pretreatment on AS is developed to remove the layer of Al2O3. HCl is found as the most effective acid to pretreat AS and the HCl-pretreated or acid-washed AS (AWAS) is able to remove bromate from water and convert it to bromide. Factors, such as temperature, pH, co-existing anions, and particle size, which influence the bromate removal using AWAS are also investigated...
January 6, 2017: Chemosphere
https://www.readbyqxmd.com/read/28088020/sulphur-alters-chromium-vi-toxicity-in-solanum-melongena-seedlings-role-of-sulphur-assimilation-and-sulphur-containing-antioxidants
#6
Madhulika Singh, Bishwajit Kumar Kushwaha, Samiksha Singh, Vipin Kumar, Vijay Pratap Singh, Sheo Mohan Prasad
The present study investigates modulation in hexavalent chromium [Cr(VI) 25 μM] toxicity by sulphur (S; 0.5, 1.0 and 1.5 mM S as low (LS), medium (MS) and high sulphur (HS), respectively) in Solanum melongena (eggplant) seedlings. Biomass accumulation (fresh and dry weights), photosynthetic pigments, photosynthetic oxygen evolution and S content were declined by Cr(VI) toxicity. Furthermore, fluorescence characteristics (JIP-test) were also affected by Cr(VI), but Cr(VI) toxicity on photosystem II photochemistry was ameliorated by HS treatment via reducing damaging effect on PS II reaction centre and its reduction side...
December 27, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28087991/an-exceptionally-selective-dna-cooperatively-binding-two-ca2-ions
#7
Wenhu Zhou, Runjhun Saran, Po-Jung Jimmy Huang, Jinsong Ding, Juewen Liu
Ca2+ is a highly important metal ion in biology and in the environment, leading to extensive work in developing sensors for Ca2+ detection. While many Ca2+ binding proteins are known, few nucleic acids can selectively bind Ca2+. DNA-based biosensors are attractive for its high stability and excellent programmability. Herein, we report a RNA-cleaving DNAzyme named EtNa cooperatively binding two Ca2+ ions but only one Mg2+. Four DNAzymes with known Ca2+-dependent activity were compared, and the EtNa has the best selectivity...
January 14, 2017: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/28087990/the-modification-of-onsager-reaction-field-and-its-application-on-spectral-parameters
#8
Xinyu Wang, Rina Dao, Jia Yao, De Peng, Haoran Li
Solvent polarity is an important solvent property. The Onsager's theory of reaction field was the most classic model to describe the solvent effects and was widely used in relating dielectric constant and other solvent polarity parameters. In this study, a modified semi-empirical reaction field was presented to relate electron transition energies or hyperfine coupling constants with the dielectric constants of solvents. In previous works, this relationship was well established by traditional Onsager reaction field for non-hydrogen bonding systems but failed for hydrogen bonding systems...
January 14, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/28087988/cpg-island-methylator-phenotype-is-an-independent-predictor-of-survival-after-curative-resection-for-colorectal-cancer-a-prospective-cohort-study
#9
Chang Hyun Kim, Jung Wook Huh, Hyeong Rok Kim, Young Jin Kim
BACKGROUND AND AIMS: The CpG island methylator phenotype (CIMP) is found in approximately 30% of colorectal cancer (CRC) cases. However, the role of CIMP status in predicting oncologic outcomes in curatively resected CRC is still unclear. STUDY: Between January 2006 and December 2006, we retrospectively reviewed 157 consecutive patients who underwent curative surgery for CRC. Prognostic significance of CIMP status was evaluated using reverse transcriptase-polymerase chain reaction...
January 14, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28087987/nmr-line-fitting-quantification-of-polysaccharide-n-acylurea-based-modification-in-glycoconjugates-of-salmonella-typhi-vi-polysaccharide
#10
Raine Garrido, Jean Pierre Soubal, Leonid Torres, Ubel Ramirez, Vicente Vérez
The polysaccharides modification via carbodiimide reaction is one of most applied method for obtaining conjugated vaccines against Salmonella enterica. However, N-acylurea carbodiimide adduct generated in the process is a critical impurity in carbohydrate-based vaccines. A quantitative NMR method was developed for assessing the N-acylurea carbodiimide adduct impurity. The procedure was based on line-fitting facilities for processing the NMR signals on complex spectra. The method showed good linearity, accuracy and precision under inter-operator variation (relative standard deviation <5%)...
January 14, 2017: Magnetic Resonance in Chemistry: MRC
https://www.readbyqxmd.com/read/28087959/a-study-on-hla-dr-dq-typing-in-adult-malay-patients-with-acute-amoebic-liver-abscess
#11
Z Nazli, N M S Azira, M Zeehaida, Z Nik Zairi, Y Nurul Khaiza, Y Maya Mazuwin
INTRODUCTION: Amoebiasis is a parasitic disease caused by Entamoeba histolytica that may lead to death in developing countries. Few important risk factors have been identified in the development of amoebic liver abscess (ALA). There are limited reports that suggest an association between antigens of the major histocompatibility complex (MHC) particularly class II antigens and ALA development. This present work aimed at studying the possible association of HLA antigens with ALA and disease severity...
December 2016: Medical Journal of Malaysia
https://www.readbyqxmd.com/read/28087860/retraction-note-triptolide-contributes-to-decrease-in-tlr4-expression-by-upregulating-mir-224-3p-to-inhibit-the-inflammatory-reaction-in-diabetic-nephropathy
#12
Bei Sun, Shaolan Hu, Yongmei Li, Endong Zhu, Li Li, Fei Han, Chun-Jun Li, Liming Chen
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December 20, 2016: Oncotarget
https://www.readbyqxmd.com/read/28087824/neuropathology-of-sudep-role-of-inflammation-blood-brain-barrier-impairment-and-hypoxia
#13
Zuzanna Michalak, Dima Obari, Matthew Ellis, Maria Thom, Sanjay M Sisodiya
OBJECTIVE: To seek a neuropathologic signature of sudden unexpected death in epilepsy (SUDEP) in a postmortem cohort by use of immunohistochemistry for specific markers of inflammation, gliosis, acute neuronal injury due to hypoxia, and blood-brain barrier (BBB) disruption, enabling the generation of hypotheses about potential mechanisms of death in SUDEP. METHODS: Using immunohistochemistry, we investigated the expression of 6 markers (CD163, human leukocyte antigen-antigen D related, glial fibrillary acid protein, hypoxia-inducible factor-1α [HIF-1α], immunoglobulin G, and albumin) in the hippocampus, amygdala, and medulla in 58 postmortem cases: 28 SUDEP (definite and probable), 12 epilepsy controls, and 18 nonepileptic sudden death controls...
January 13, 2017: Neurology
https://www.readbyqxmd.com/read/28087667/prmt5-selective-inhibitors-suppress-inflammatory-t-cell-responses-and-experimental-autoimmune-encephalomyelitis
#14
Lindsay M Webb, Stephanie A Amici, Kyle A Jablonski, Himanshu Savardekar, Amanda R Panfil, Linsen Li, Wei Zhou, Kevin Peine, Vrajesh Karkhanis, Eric M Bachelder, Kristy M Ainslie, Patrick L Green, Chenglong Li, Robert A Baiocchi, Mireia Guerau-de-Arellano
In the autoimmune disease multiple sclerosis and its animal model, experimental autoimmune encephalomyelitis (EAE), expansion of pathogenic, myelin-specific Th1 cell populations drives active disease; selectively targeting this process may be the basis for a new therapeutic approach. Previous studies have hinted at a role for protein arginine methylation in immune responses, including T cell-mediated autoimmunity and EAE. However, a conclusive role for the protein arginine methyltransferase (PRMT) enzymes that catalyze these reactions has been lacking...
January 13, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28087646/wheat-genotypes-with-combined-resistance-to-wheat-curl-mite-wheat-streak-mosaic-virus-wheat-mosaic-virus-and-triticum-mosaic-virus
#15
Wen-Po Chuang, Lina Maria Aguirre Rojas, Luaay Kahtan Khalaf, Guorong Zhang, Allan K Fritz, Anna E Whitfield, C Michael Smith
The wheat curl mite, Aceria tosichella Keifer, (WCM) is a global pest of bread wheat that reduces yields significantly. In addition, WCM carries Wheat streak mosaic virus (WSMV, family Potyviridae, genus Tritimovirus), the most significant wheat virus in North America; High Plains wheat mosaic virus (HPWMoV, genus Emaravirus, formerly High plains virus); and Triticum mosaic virus (TriMV, family Potyviridae, genus Poacevirus). Viruses carried by WCM have reduced wheat yields throughout the U.S. Great Plains for >50 yr, with average yield losses of 2-3% and occasional yield losses of 7-10%...
January 13, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28087644/u-s-fda-approval-summary-nivolumab-for-treatment-of-unresectable-or-metastatic-melanoma-following-progression-on-ipilimumab
#16
Maitreyee Hazarika, Meredith K Chuk, Marc R Theoret, Sirisha Mushti, Kun He, Shawna L Weis, Alexander H Putman, Whitney S Helms, Xianhua Cao, Hongshan Li, Hong Zhao, Liang Zhao, Joel Welch, Laurie Graham, Meredith Libeg, Rajeshwari Sridhara, Patricia Keegan, Richard Pazdur
On December 22, 2014, the U. S. Food and Drug Administration (FDA) granted accelerated approval to nivolumab (OPDIVO®, Bristol-Myers Squibb) for the treatment of patients with unresectable or metastatic melanoma and disease progression following ipilimumab and, if BRAF V600 mutation-positive, a BRAF inhibitor. Approval was based on a clinically meaningful, durable objective response rate (ORR) in a non-comparative analysis of 120 patients who received nivolumab 3 mg/kg intravenously every 2 weeks with at least 6 months follow-up in an ongoing, randomized, open-label, active-controlled clinical trial...
January 13, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28087616/pathways-to-false-positive-diagnoses-using-molecular-genetic-detection-methods-phytophthora-cinnamomi-a-case-study
#17
Manisha Kunadiya, Diane White, William A Dunstan, Giles E St, J Hardy, Vera Andjic, Treena I Burgess
Phytophthora cinnamomi is one of the world's most invasive plant pathogens affecting ornamental plants, horticultural crops and natural ecosystems. Accurate diagnosis is very important to determine the presence or absence of this pathogen in diseased and asymptomatic plants. In previous studies, P. cinnamomi species-specific primers were designed and tested using various polymerase chain reaction (PCR) techniques including conventional PCR, nested PCR, and quantitative real time PCR (qPCR). In all cases, the primers were stated to be highly specific and sensitive to P...
January 12, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/28087585/standard-based-comprehensive-detection-of-adverse-drug-reaction-signals-from-nursing-statements-and-laboratory-results-in-electronic-health-records
#18
Suehyun Lee, Jiyeob Choi, Hun-Sung Kim, Grace Juyun Kim, Kye Hwa Lee, Chan Hee Park, Jongsoo Han, Dukyong Yoon, Man Young Park, Rae Woong Park, Hye-Ryun Kang, Ju Han Kim
OBJECTIVE: We propose 2 Medical Dictionary for Regulatory Activities-enabled pharmacovigilance algorithms, MetaLAB and MetaNurse, powered by a per-year meta-analysis technique and improved subject sampling strategy. MATRIALS AND METHODS: This study developed 2 novel algorithms, MetaLAB for laboratory abnormalities and MetaNurse for standard nursing statements, as significantly improved versions of our previous electronic health record (EHR)-based pharmacovigilance method, called CLEAR...
January 13, 2017: Journal of the American Medical Informatics Association: JAMIA
https://www.readbyqxmd.com/read/28087492/multi-antibiotic-resistant-and-putative-virulence-gene-signatures-in-enterococcus-species-isolated-from-pig-farms-environment
#19
Abeni Beshiru, Isoken H Igbinosa, Faith I Omeje, Abraham G Ogofure, Martin M Eyong, Etinosa O Igbinosa
The continuous misuse of antimicrobials in food animals both orally and subcutaneously as therapeutic and prophylactic agents to bacterial infections could be detrimental and contribute to the dissemination of resistant clones in livestock production. The present study was carried out to determine the antibiogram and virulence gene characteristics of Enterococcus species from pig farms. A total of 300 faecal samples were obtained from two pig farms in Benin City between February and July, 2016. Standard culture-based and polymerase chain reaction (PCR) assay were adopted in the detection and characterization of the Enterococcus species...
January 10, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28087479/synthesis-and-characterization-of-gold-nanostructured-chorin-e6-for-photodynamic-therapy
#20
L Vieira, M L Castilho, I Ferreira, J Ferreira-Strixino, K C Hewitt, L Raniero
Photodynamic therapy is an alternative treatment for cancer based on cellular uptake of a photosensitizer, illuminated with an appropriate wavelength in the presence of oxygen. A cascade of reactions generates reactive oxygen species leading to cell death. Using carbodiimide chemistry, chlorin e6 (Ce6) was covalently bonded to thiourea, and (via the sulphur end group) to gold nanoparticles (AuNPs), forming the Ce6-AuNP complex. Ce6 absorbs in the range 650-680nm, where the coefficient of biological tissue absorption is low (part of the therapeutic window), which is ideal for biological application...
January 10, 2017: Photodiagnosis and Photodynamic Therapy
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